微波吸收/屏蔽材料 – 专利

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微波吸收/屏蔽材料 – 专利

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RU2674193--POLYMER COMPOSITION FOR ABSORPTION OF HIGH-FREQUENCY ENERGY

--吸收高频能量的聚合物组成

CN108129758--P wave band traveling wave inhibiting sheet material

CN108129758--p波段行波抑制片材

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RU2012111336--用于吸收高频能量的聚合物组成

微波吸收/屏蔽材料 – 专利

进一步:

POLYMER COMPOSITION FOR ABSORPTION OF HIGH-FREQUENCY ENERGY

吸收高频能量的聚合物组成

RU2674193

Ru2674193

FIELD:radio equipment;electronics.SUBSTANCE:invention relates to electronic equipment,in particular the production of polymer compositions,designed to absorb the energy of parasitic types of waves in the chart-forming devices of the quasi-optical type of multibeam antenna arrays made on foil microwave fluoropolymer based dielectrics.Polymer composition for absorption of high-frequency energy contains polymer-synthetic rubber of low molecular weight dimethylsiloxane SKTN 15-25 parts by weight,cold curing catalyst K-68 0.4-0.6 parts by weight,absorbing filler-carbonyl carbon iron radio of R-10 grade 34-56 parts by weight and ethyl silicate-40 1.5 to 2.5 parts by weight.EFFECT:invention provides a good level of coordination of the transition from the foiled microwave dielectric to the polymer composition.1 cl,2 tbl,3 ex

领域:无线电设备;电子产品:本发明涉及电子设备,特别是聚合物组合物的生产,该聚合物组合物旨在吸收准光学型多波束天线阵列的图表形成装置中的寄生型波的能量,该天线阵列由金属箔微波含氟聚合物介质制成。用于吸收高频能量的聚合物组合物包括低分子量二甲基硅氧烷SKTN15-25部分的聚合物合成橡胶,低温硫化催化剂k-680.4-0.6部分的重量,填料吸收R-1034-56部分的羰基碳铁比,硅酸乙酯-401.5-2.5部分的重量

The invention relates to electronic equipment,in particular the production of polymer compositions intended to absorb the energy of parasitic types of waves in the chart-forming devices of the quasi-optical type of multibeam antenna arrays made on foil microwave fluoroplast-based dielectrics.

本发明涉及电子设备,特别是用于吸收准光学型多波束天线阵列的图形形成装置中的寄生型波的能量的聚合物组合物的生产,该多波束天线阵列由金属箔微波荧光基介质制成。

Known"Composition for the absorption of high-frequency energy"[RU 2349615 C1,publ.20.09.2009,IPC C09D 5/32].The essence of this invention is that it contains a polymer-synthetic rubber,heat-resistant low molecular weight SKTN,cold-curing catalyst K-68,as well as an absorbent filler-iron carbonyl radio grade R-10 in the following ratio of components,May.including:

已知的"高频能量吸收成分"[RU2349615C1publ20.09.2009IPCC09D5/32].本发明的实质是含有聚合物合成橡胶、耐热低分子量SKTN、冷固化催化剂K-68,以及以下组分比例的吸附性填料——羰基铁放射级R-10,5。包括:

Synthetic heat-resistant synthetic rubber low molecular weight SKTN 15-25 Cold-curing catalyst?-68 0.6-1.0 Radio-carbonyl iron<tb>brand P-10 78-83

合成耐高温合成橡胶低分子量SKTN15-25冷固化催化剂?-680.6-1.0放射性羰基铁tb品牌p-1078-83

The composition for absorbing high-frequency energy of such a composition is made by simply mixing the components and curing them at room temperature.

该组合物吸收该组合物的高频能量的组合物是通过简单地将该组合物混合并在室温下固化而制成的。

However,this composition has a significant shrinkage after curing and various climatic influences,insufficient absorbing properties.Known"Polymer composition for the absorption of high-frequency energy"[RU 2493186 C1,publ.20.09.2013 year IPC C09D 5/32]contains low molecular weight dimethylsiloxane SKTN as a base,iron carbonyl radio engineering and cold curing catalyst K-68 as an absorbing filler,in addition,it additionally contains a solution of high-molecular-mass SKT in a polymethylsiloxane liquid and tetraethoxysilane isomericyne isomers,and it also contains a solution of high-molecular-mass SKT in a polymethylsiloxane liquid and tetraethoxysilane and its composition.,as well as polyethylene polyamine as a curing rate regulator in the following ratio of components,wt.including:

然而,该组合物固化后具有明显的收缩,受各种气候因素的影响,吸水性能不足。已知的"吸收高频能量的聚合物组合物"[RU2493186C1publ20.09.2013IPCc09d5/32]包含低分子量二甲基硅氧烷SKTN为基体,铁羰基放射性工程和冷固化催化剂K-68为吸附填料,此外,它还包含高分子量SKT溶液在聚甲基硅氧烷液体和四乙氧基硅烷异构体中,它还包含高分子量SKT溶液在聚甲基硅氧烷液体和四乙氧基硅烷及其组成中。以及聚乙烯多胺作为硫化速率调节剂,在以下组分的比例,重量。包括:

Low molecular weight dimethylsiloxane rubber SKTN 13-20 Rubber 2-3 Tetraethoxysilane or its derivatives selected from from ethyl silicate-40 and ethyl silicate-32 2-3 Iron carbonyl radio engineering P-10 78-90 Cold-curing catalyst K-68 1.0-1.5 Polyethylene polyamine to 1.0 Polymethylsiloxane liquid selected by from PMS-50 and PMS-100 2-3

低分子量二甲基硅氧烷橡胶SKTN13-20橡胶2-3四乙氧基硅烷或其衍生物选自硅酸乙酯-40和硅酸乙酯-322-3铁羰基放射性工程p-1078-90冷固化催化剂k-681.0-1.5聚乙烯多胺和pms-502-3聚甲基硅氧烷液

The method of obtaining the composition consists in the fact that iron carbonyl radio engineering is pre-combined with rubber with low molecular weight dimethylsiloxane SKTN,part of polymethylsiloxane fluid,part of tetraethoxysilane or its derivatives in component A,and is kept after mixing for at least 24 hours.its derivatives in component B,incubated after mixing to a homogeneous state for at least 24 hours,and then mixed with component A,add catalyst K-68 or its mixture with polyethylene polyamine followed by curing.

获得该组合物的方法包括以下事实:将羰基铁离子工程与橡胶预结合,与低分子量二甲基硅氧烷SKTN、部分聚甲基硅氧烷流体、部分四乙氧基硅烷或其衍生物在组分a中结合,并在混合后保存至少24小时。其衍生物在组分b中,混合到均相状态至少24小时后孵育,然后与组分a混合,加入催化剂K-68或其混合物与聚乙烯多胺进行硫化。

However,this composition is multicomponent,laborious(more than 24 hours to prepare and 24 hours to cure)and does not provide the required attenuation of the electromagnetic wave of the microwave range.

然而,这种组合物是多组分的,费时费力(制备时间超过24小时,固化时间超过24小时),不能提供微波范围内所需的电磁波衰减。

The closest in technical essence to the proposed polymer composition is a"Polymer composition for the absorption of high-frequency energy"[RU 2497851 C1,publ.10.11.2013 MCP G08L].Polymer composition for absorbing high-frequency energy,containing polymer-synthetic rubber of low molecular weight dimethylsiloxane SKTN,catalyst-cold curing catalyst?68,and also contains P-10 radio-carbonyl radio engineering grade 40 as well as absorbing filler,with the following ratio of components,wt.including:

在技术本质上,与所提议的聚合物组合物最接近的是"吸收高频能量的聚合物组合物"[RU2497851C1publ10.11.2013MCPG08L].用于吸收高频能量的聚合物组合物,含有低分子量二甲基硅氧烷SKTN的聚合物合成橡胶,催化剂-冷固化催化剂?68,还含有P-10放射性羰基工程级40以及吸附填料,其组成比例为:0。包括:

Synthetic low-molecular rubber dimethylsiloxane SKTN 15-25 Radio-carbonyl iron of the mark?-10 105-175

合成低分子橡胶二甲基硅氧烷SKTN15-25放射性羰基铁的标记?-10105-175

Cold Curing Catalyst#68 1.5-2,5

冷固化催化剂#681.5-2,5

Ethyl silicate-40 1.5-2.5.

硅酸乙酯-401.5-2.5

The disadvantage of the prototype is the high value of the relative dielectric constant and,as a result,insufficient coordination of the transition from the foiled dielectric to the absorbing composition,which makes it impossible to use it for the manufacture of plates for absorbing the energy of parasitic wave types in devices based on fluoroplastic based foil.

原理样机的缺点是相对介电常数值高,因此,从泡沫介质到吸收组分的过渡协调不足,无法用于制造基于氟塑料箔的器件中吸收寄生波类型能量的板材。

The technical problem of the claimed invention is to improve the properties of the absorbing material.

本发明的技术问题是提高吸波材料的性能。

The technical result of the proposed invention is to obtain a polymer composition that provides a good level of coordination of the transition from the foiled microwave dielectric to the absorbing composition,which is associated with a decrease in the real part of the relative dielectric constant and reflection coefficient at a normal incidence of a flat uniform electromagnetic wave at the"insulator-absorber"interface.

本发明的技术结果是获得一种聚合物组合物,该聚合物组合物提供了从被阻止的微波介质到吸收组合物的良好协调性,这种协调性与在"绝缘体-吸收体"界面上的平均入射的相对介电常数和反射系数的实际部分下降有关。

The essence of the invention lies in the fact that the proposed polymer composition for absorbing high-frequency energy contains polymer-synthetic rubber of low molecular weight dimethylsiloxane SKTN,and cold curing catalyst K-68,as well as absorbing filler-iron carbonyl radio technical grade P-10 and ethyl silicate-40.

本发明的实质在于,所提出的吸收高频能量的聚合物组合物含有低分子量二甲基硅氧烷SKTN聚合物合成橡胶和K-68冷固化催化剂,以及吸收填料——碳酸铁技术级P-10和硅酸乙酯-40

New is the fact that they use the polymer composition in the following ratio of components,in May.including:

新的事实是,他们使用的聚合物组成以下比例的组成部分,在五月。包括:

Synthetic low-molecular rubber dimethylsiloxane SKTN GOST 13835-73 15-25 Radio-carbonyl iron of the mark?-10 GOST 13610-79 34-56 Cold-curing catalyst?68 TU 38.303-04-05-90 0.4-0.6 Ethyl silicate-40 GOST 26371-84 1.5-2,5

合成低分子橡胶二甲基硅氧烷SKTNGOST13835-7315-25放射性羰基铁的标记?-10GOST13610-7934-56冷固化催化剂?68TU38.303-04-05-900.4-0.6乙基硅酸盐-40GOST26371-841.5-2,5

The polymer composition for absorbing high-frequency energy is made by simply mixing the components and curing at room temperature.

吸收高频能量的聚合物组合物是由组分简单混合并在室温下固化而成。

Table 1 shows the compositions of the proposed composition for absorption

1显示了拟议吸收组合物的成分

high frequency energy.

高频能量。

[image]

[图片]

The specified range of components is chosen due to the fact that with a decrease in the amount of carbonyl carbon radio engineering,the absorbing properties deteriorate,and with an increase it is impossible to achieve the required level of matching.With a decrease in the amount of cold curing catalyst No.68,the composition does not completely cure,and with an increase,the viscosity quickly increases,the viability of the composition decreases,and the electrophysical parameters deteriorate due to the presence of unselected air bubbles.

选择特定的组分范围是因为随着羰基碳放射性工程量的减少,吸波性能恶化,随着增加,不可能达到所要求的匹配水平。随着68号冷固化催化剂用量的减少,组分不能完全固化,随着粘度的增加,组分的活性迅速增加,由于未选择的气泡的存在,组分的电物理参数恶化。

Table 2 shows the results of comparative tests of the analogue and the claimed polymer composition for the absorption of high-frequency energy.

2显示了对吸收高频能量的模拟物和声称的聚合物组合物进行比较试验的结果。

[image]

[图片]

As can be seen from the data presented in table 2,the proposed polymer composition for the absorption of high-frequency energy has the advantages:

从表2中提供的数据可以看出,拟议的吸收高频能量的聚合物组合物具有以下优点:

-a lower maximum value of the dielectric constant of the absorbing composition in the frequency range 12-14 GHz("8.4"vs."20");-a lower maximum value of the power reflection coefficient at a normal incidence of a flat homogeneous electromagnetic wave at the interface"foil microwave fluoroplast-based dielectric-absorbing composition"in the frequency range 12-14 GHz("-12"vs."-7.5").

-频率范围12-14ghz("8.4"vs."20")的吸收组分的介电常数的最大值较低;-在频率范围12-14ghz("-12"vs."-7.5")的界面上,平均电磁波正常入射时的最大值较低。

微波吸收/屏蔽材料 – 专利

P wave band traveling wave inhibiting sheet material

P波段行波抑制片材

CN108129758

Cn108129758

Abstract The invention belongs to the technical field of electromagnetic functional materials.The powder absorbent is used,and the surface of the absorbent is coated to achieve high microwave permeability,which imparts high traveling wave attenuation in the P-band and increases the filling ratio in the matrix material.The P-band traveling wave suppression sheet according to the present invention is a vulcanized film containing a sheet-like absorbent having a thickness of 3.5 to 10 mm,and the material quality composition comprises at least 20 parts of a sheet-like absorbent powder of 60 to 110 parts of a base rubber.The P-band traveling wave suppression sheet according to the present invention has high saturation magnetization,good weather resistance,good insulation performance,and high magnetic permeability in the microwave section.In the radar wave P-band has high magnetic permeability and magnetic loss,the average value of the traveling wave loss effect of the material of 3 to 10 mm thick in the frequency range of 300 MHz to 1000 MHz is greater than-10 dB.Applicable to the field of electromagnetic anti-interference,especially suitable for phased array radar.

本发明属于电磁功能材料技术领域。采用粉末吸收剂,对吸收剂表面进行涂覆,以获得高的微波渗透率,从而在p波段实现高行波衰减,提高基体材料的填充率。根据本发明的p波段行波抑制片是含有厚度为3.510毫米的片状吸收剂的硫化薄膜,所述材料质量组合物包括由基础橡胶的60110部分组成的片状吸收剂粉末的至少20部分。根据本发明的p波段行波抑制片具有高的饱和磁化强度、良好的耐候性、良好的绝缘性能以及微波段的高磁导率。在雷达波p波段具有较高的磁导率和磁损耗,在300mhz1000mhz的频率范围内,310mm厚的材料的行波损耗效应平均值大于-10db。适用于电磁抗干扰领域,特别适用于相控阵雷达。

P-band traveling wave suppression sheet

P波段行波抑制片

Technical field

技术领域

The invention belongs to the technical field of electromagnetic functional materials,and relates to anti-interference electromagnetic material design technology,in particular to P-band anti-interference technology.

本发明属于电磁功能材料技术领域,涉及抗干扰电磁材料设计技术,尤其涉及p波段抗干扰技术。

Background technique

背景技术

P-band as radar detection signal has many advantages:P-band can detect stealth target;P-band atmospheric attenuation is small,detection distance is far;P-band radar component has low process difficulty and low power consumption.

P波段作为雷达探测信号有许多优点:p波段可以探测隐身目标,p波段大气衰减小,探测距离远,p波段雷达组件处理难度低,功耗低。

The distance between the remote warning phased array radar antennas is relatively close.When the two antenna arrays work at the same time,due to the traveling wave,the antenna array will interfere with each other,and there are electromagnetic interference and electromagnetic compatibility problems,which cannot work normally,which seriously affects the use efficiency and system tasks of the radar.To solve this problem,there are two schemes for suppressing traveling waves by electromagnetic functional materials and expanding the dynamic range of the receiver.Extending the dynamic range of the receiver requires changes to the antenna design,replacement of some key components,long development cycle,and huge research costs.The use of electromagnetic functional materials does not require changes to the antenna array.It is only necessary to lay the absorbing material directly in the middle of the two antenna arrays,which has a short development cycle and is easy to operate.

遥警相控阵雷达天线之间的距离相对较近。当两个天线阵列同时工作时,由于行波的影响,天线阵列会相互干扰,存在电磁干扰和电磁兼容性问题,不能正常工作,严重影响雷达的使用效率和系统任务。为了解决这个问题,有两种方案:用电磁功能材料抑制行波和扩大接收机的动态范围。扩大接收机的动态范围需要改变天线设计,更换一些关键部件,开发周期长,研究成本高。电磁功能材料的使用不需要改变天线阵列。只需将吸波材料直接铺设在两个天线阵列的中间即可,开发周期短,操作方便。

At present,domestic application bands for absorbing sheets are mainly concentrated in the range of 1 to 18 GHz,which are used for special parts of aircraft and missiles.There are no reports and studies on sheets below 1 GHz,especially for P-bands for absorbing.

目前国内吸波片的应用波段主要集中在118ghz范围内,主要用于飞机和导弹的特殊部件。目前还没有关于1ghz以下板材的报道和研究,特别是关于p波段的吸波材料。

Summary of the invention

本发明概述

The object of the present invention is to provide a patch-type radar wave absorbing material,which solves the problem of mutual interference between antennas in a phased array radar.

本发明的目的是提供一种贴片式雷达吸波材料,解决了相控阵雷达天线间的相互干扰问题。

The object of the present invention is achieved by using a powder absorbent and coating the surface of the absorbent to prevent the absorbing material from forming a conductive network during the preparation process,thereby achieving high microwave permeability and imparting a high P-band.The traveling wave is attenuated while increasing its filling ratio in the matrix material.

本发明的目的是通过使用粉末吸收剂并在吸收剂表面涂覆以防止吸收材料在制备过程中形成导电网络,从而实现高微波渗透性并赋予高p波段。随着填充率的增加,行波在基体材料中衰减。

The P-band traveling wave suppression sheet according to the present invention is a vulcanized film containing a sheet-like absorbent having a thickness of 3.5 to 10 mm,and the material quality composition includes at least:

根据本发明的p波段行波抑制片是含有厚度为3.510毫米的片状吸收剂的硫化薄膜,所述材料质量组合物至少包括:

Flaky absorbent powder 60~110 parts

片状吸水性粉末60110

Base rubber 20 parts

基础橡胶20部分

The sheet-like absorbent is one or more of SiO2 coated sheet-like ferrosilicon,ferrite-coated sheet-like ferrosilicon,flaky carbonyl iron,and SiO2-coated ultrafine iron powder;The base compound is a free radical vulcanization system.

所述片状吸收剂为一种或多种SiO2涂层片状硅铁、铁氧体涂层片状硅铁、片状羰基铁和SiO2涂层超细铁粉,基体化合物为自由基硫化体系。

The P-band traveling wave suppression sheet according to the present invention is a vulcanized film containing a sheet-like absorbent,and the material quality composition comprises at least:

根据本发明的p波段行波抑制片是含有片状吸收剂的硫化薄膜,所述材料质量组合物至少包括:

Absorbent powder 75~100 parts

吸水性粉末75100

Base compound 20 parts.

基础化合物20份。

The P-band traveling wave suppression sheet according to the present invention is characterized in that the ferrosilicon has a sheet diameter of 20 to 70µm and a sheet diameter to thickness ratio of 50:1 to 150:1.

根据本发明的p波段行波抑制片的特征是硅铁片的片径为2070m,片径与厚度的比值为50:1150:1

The P-band traveling wave suppression sheet according to the present invention is characterized in that the carbonyl iron sheet has a diameter distribution of 10 to 50µm and a sheet diameter to thickness ratio of 40:1 to 100:1.

根据本发明的p波段行波抑制片的特征在于所述羰基铁片的直径分布为1050m,片径与厚度比为40:1100:1

The P-band traveling wave suppression sheet according to the present invention is characterized in that the ultrafine iron powder has a particle size ranging from 1 to 10µm and the particle shape is a branch shape.

根据本发明的p波段行波抑制片的特征在于,所述超细铁粉的粒径为110m,粒子形状为枝状。

The P-band traveling wave suppression sheet according to the present invention is characterized in that:the base rubber is a kind of EPDM rubber,silicone rubber,acrylate rubber,urethane rubber,and nitrile rubber.

本发明的p波段行波抑制片的特征在于:基础橡胶为三元乙丙橡胶、硅橡胶、丙烯酸酯橡胶、聚氨酯橡胶和丁腈橡胶。

The P-band traveling wave suppression sheet according to the present invention is characterized in that the vulcanizing agent is 2,4-dichlorobenzoyl peroxide,p-p-diaminodiphenylmethane or poly-p-nitrosobenzene.One.

根据本发明的p波段行波抑制片的特征是硫化剂为2,4-二氯苯甲酰过氧化物、对二氨基二苯甲烷或聚对亚硝基苯。一个。

The P-band traveling wave suppression sheet according to the present invention is characterized in that the base rubber further comprises an accelerator and an antifungal agent.

根据本发明的p波段行波抑制片的特征在于,所述基础橡胶还包括促进剂和抗真菌剂。

The P-band traveling wave suppression sheet according to the present invention is characterized in that the accelerator is one of TMTD,TETD,TMTM,and DDTD.

根据本发明的p波段行波抑制片的特征在于加速器是TMTDTETDTMTMDDTD之一。

The P-band traveling wave suppression sheet according to the present invention is characterized in that the antifungal agent is phenol.

根据本发明的p波段行波抑制片的特征在于其抗真菌剂为苯酚。

A preparation method for preparing a P-band traveling wave suppression sheet,comprising an absorbent coating,a rubber compounding and kneading,a calendering and a hot pressing vulcanization process,wherein the thickness of the rolled lower sheet is between 1.5 and 3 mm The mixed film is stacked in parallel and placed in a mold having a thickness of 3.5 to 10 mm,100 to 160°C/15 to 25 MPa,and vulcanized by heat pressing for 15 minutes to 30 minutes.

一种制备p波段行波抑制片的制备方法,包括吸收涂层、橡胶复合和捏合、压延和热压硫化工艺,其中压延的下片厚度在1.53mm之间,混合膜平行堆放在厚度为3.510mm100160c/1525mpa的模具中,通过热压15分钟至30分钟硫化。

The P-band traveling wave suppression sheet according to the present invention has high saturation magnetization,good weather resistance,good insulation performance,and high magnetic permeability in the microwave section.In the radar wave P-band has high magnetic permeability and magnetic loss,the average value of the traveling wave loss effect of the material of 3 to 10 mm thick in the frequency range of 300 MHz to 1000 MHz is greater than-10 dB.Applicable to the field of electromagnetic anti-interference,especially suitable for phased array radar.

根据本发明的p波段行波抑制片具有高的饱和磁化强度、良好的耐候性、良好的绝缘性能以及微波段的高磁导率。在雷达波p波段具有较高的磁导率和磁损耗,在300mhz1000mhz的频率范围内,310mm厚的材料的行波损耗效应平均值大于-10db。适用于电磁抗干扰领域,特别适用于相控阵雷达。

Detailed ways

详细的方法

The embodiments of the present invention are described below by way of specific specific examples,and those skilled in the art can readily understand other advantages and effects of the present invention from the disclosure of the present disclosure.The present invention may be embodied or applied in various other specific embodiments.The various details of the present invention can be variously modified and changed without departing from the spirit and scope of the invention.

本发明的实施例通过具体的例子在下面描述,并且本领域的技术人员可以通过本发明的公开很容易地理解本发明的其他优点和效果。本发明可包含或应用于各种其他特定实施例中。本发明的各种细节可以在不脱离本发明的精神和范围的情况下进行各种修改和更改。

The microstructure of the composite was observed by Zeiss field emission scanning microscope.The particle size of the absorbing agent powder was measured by Marlven 2000 laser particle size analyzer.The magnetic permeability and dielectric constant of the microwave section of the composite were measured by Agilent vector network analyzer.The point frequency RCS value of the absorbing sheet was tested using an Agilent microwave millimeter wave RCS test system.

用蔡司场发射扫描显微镜观察了复合材料的微观结构。用Marlven2000型激光粒度分析仪测定了吸收剂粉末的粒度。复合材料微波部分的磁导率和介电常数由安捷伦矢量电路网络分析仪测量。利用安捷伦微波毫米波RCS测试系统对吸波片的点频RCS值进行了测试。

Embodiment 1

体现1

100 parts of flake silicon-aluminum powder(BNA-130)was mixed with 200 parts of absolute ethanol,4 parts of 3-aminopropyltriethoxysilane(APTES)coupling agent and deionized water,and stirred at room temperature for 2 h.Thereafter,12 parts of tetraethyl orthosilicate(TEOS)was added to the system,and the mixture was stirred at 80 r/min in a water bath at 40°C for 3 hours to obtain an SiO 2 insulating coating layer on the surface of the absorbent powder particles.The coated powder was rinsed with absolute ethanol for 4 to 5 times to remove the unreacted organic matter,and dried at 60°C for 3 hours.The dried powder was heat-treated at 500°C for 2 h in a nitrogen atmosphere,and after cooling,a SiO 2-coated iron-silicon-aluminum composite absorbent powder was obtained.

100份片状硅铝粉(BNA-130)200份乙醇、43-氨丙基三乙氧基硅烷(APTES)偶联剂和去离子水混合,室温搅拌2h后,在体系中加入12份片状硅铝粉(TEOS),在40c水浴中以80r/min的速度搅拌3h,在吸附剂颗粒表面形成sio2绝缘层。涂层粉末用乙醇冲洗45次以去除未反应的有机物质,然后在60°c下干燥3小时。干燥后的粉末在500c的氮气气氛下热处理2h,冷却后得到sio2包覆的铁--铝复合吸附粉末。

20 parts of ethylene propylene diene monomer(Dow 4770P)was placed in an open mill for mixing,the front roll was 85°C,and the rear roll was 80°C.After the sheeting,60 parts of the SiO2-coated iron-silicon-aluminum composite absorbent powder prepared above was added,and after mixing,0.3 parts of triethylenetetramine,0.3 parts of promoter MZ,and 0.3 parts of phenol were added,and the mixture was uniformly adjusted.The roll film obtained from the lower sheet was 1.5 mm,and the 6 sheets of the mixed film were placed in a mold in parallel,100°C/15 MPa,and heat-pressed for 15 min to obtain a 3.5-m thick P-band traveling wave suppression sheet.

20份三元乙丙橡胶单体(Dow4770P)置于开式轧机中进行混炼,前辊为85°c,后辊为80°c。将上述制备的铁--铝复合吸水性粉末经压片后,加入60sio2包覆的铁--铝复合吸水性粉末,混合后加入0.3份三乙烯四胺、0.3份促进剂MZ0.3份苯酚,并对混合物进行均匀调整。将6片混合膜平行放置于模具中,100c/15mpa,热压15min,得到3.5m厚的p波段行波抑制片。

3.5 The test results of magnetic permeability and dielectric constant of the mm-band P-wave traveling wave suppression sheet in the 450MHz to 650MHz band are shown in Table 1.The real and imaginary parts of the magnetic permeability at 450MHz are 11.8 and 10.2,respectively..The attenuation values of the traveling wave of each frequency point are obtained by simulation calculation as shown in Table 2.

3.5毫米波段p波行波抑制片在450兆赫至650兆赫频段的磁导率和介电常数的测试结果载于表1。在450mhz下,磁导率的实部和虚部分别为11.810.2.通过模拟计算得到了每个频率点的行波衰减值,如表2所示。

Table 1

表一

Frequency(MHz)450 550 650µ'11.8 10.4 9.3µ"10.2 10.3 10.4 3'9.8 9.9 9.9 3"0.8 1.0 1.2

频率(兆赫)450550650'11.810.49.3"10.210.310.43'9.89.99.93"0.81.01.2

Table 2

表二

[image]

[图片]

Embodiment 2

体现2

20 parts of silicone rubber(Shin-Etsu KE9X1-U)was placed in an open mill for mastication.After tableting,100 parts of flaky carbonyl iron(LDXB-100)was added,kneaded uniformly,and 0.15 parts of benzoyl peroxide was added.0.15 parts of accelerator TMTD and 0.1 part of phenol were kneaded uniformly,and the thickness of the sheet was adjusted to obtain a mixed film of 3 mm.

20份硅橡胶(Shin-EtsuKE9X1-U)被放置在一个开放式磨机中进行咀嚼。压片后,加入100份片状羰基铁(LDXB-100),均匀捏合,加入0.15份过氧化苯甲酰。0.15份促进剂TMTD0.1份苯酚均匀捏合,调整片材厚度,得到3mm的混合膜。

Four pieces of the mixed film were placed in a mold,placed at 160°C/25 MPa,and vulcanized by hot pressing for 20 minutes to obtain a 4.5-m thick P-band traveling wave suppression sheet.

4片混合膜置于160c/25mpa模具中,热压20min,得到4.5m厚的p波段行波抑制片。

The relative density of the sheet is 100%;in the range of 450MHz to 650MHz,the test results of magnetic permeability and dielectric constant are shown in Table 3;the real and imaginary parts of the magnetic permeability at 450MHz are respectively For 9.6 and 8.2.The attenuation values of the traveling wave of each frequency point are obtained by simulation calculation as shown in Table 4.

薄片的相对密度是100%;450mhz650mhz范围内,磁导率和介电常数的测试结果如表3所示;450mhz下,磁导率的实部和虚部分分别为9.68.2。通过模拟计算得到了每个频率点的行波衰减值,如表4所示。

table 3

3

Frequency(MHz)450 550 650µ'9.6 8.8 7.9µ"8.2 8.3 9.2 3'8.6 9.0 8.9 3"0.9 0.9 1.1

频率(兆赫)450550650'9.68.87.9"8.28.39.23'8.69.08.93"0.90.91.1

Table 4

表四

[image]

[图片]

Embodiment 3

体现3

100 parts of sheet-like iron silicon aluminum(BNA-130)was mixed with 200 parts of absolute ethanol,4 parts of 3-aminopropyltriethoxysilane(APTES)coupling agent and deionized water,and stirred at room temperature for 1 hour.To the system,14 parts of tetraethyl orthosilicate(TEOS)was added and stirred at 40 r/min in a water bath at 40°C for 3 h.The coated powder was washed with anhydrous ethanol for 4 to 5 times,dried at 60°C for 4 hours,and heat-treated at 500°C for 1 hour in a nitrogen atmosphere,and cooled to obtain a SiO 2-coated iron-silicon-aluminum composite absorbent powder.

BNA-130片状铁硅铝(BNA-130)200份乙醇、43-氨丙基三乙氧基硅烷(APTES)偶联剂和去离子水混合,室温搅拌1小时。在该系统中,加入14份四乙氧基硅烷,在40°c水浴中以40r/min的速度搅拌3小时。用无水乙醇洗涤45次,在60°c下干燥4h,在500°c氮气气氛下热处理1h,冷却得到sio2包覆铁硅铝复合吸水粉。

The preparation method of the rubber compound is the same as that of the second embodiment,and the thickness of the kneaded film is 2.5 mm.The material composition includes 20 parts of silicone rubber(Shin-Etsu KE9X1-U),75 parts of SiO2 coated iron-silicon-aluminum composite absorbent powder,0.25 parts of 2,4-dichlorobenzoyl peroxide,0.25 parts of accelerator TMTD and 0.2 Parts of phenol.

所述橡胶胶料的制备方法与第二实施方式相同,所述捏合膜的厚度为2.5mm。材料组成包括20份硅橡胶(Shin-EtsuKE9X1-U)75份铁硅铝复合吸水粉、0.252,4-二氯苯甲酰过氧化物、0.25份促进剂TMTD0.2份苯酚。

Five sheets of green film were placed in a parallel stack in a mold,160°C/20 MPa,and hot pressed for 20 min to obtain a 6 mm thick P-band traveling wave suppression sheet.

160c/20mpa的模具中,将5片绿色薄膜平行叠加,热压20min,得到6mm厚的p波段行波抑制片。

The test results of magnetic permeability and dielectric constant in the 450MHz to 650MHz band are shown in Table 5 at room temperature;the real and imaginary parts of the magnetic permeability of 450MHz are 10.8 and 9.9,respectively.The traveling wave attenuation values of each frequency point are obtained by simulation calculation as shown in Table 6.

450mhz650mhz频段的磁导率和介电常数的测试结果见表5;450mhz的磁导率的实部和虚部分分别为10.89.9。通过模拟计算得到了每个频率点的行波衰减值,如表6所示。

table 5

5号桌

Frequency(MHz)450 550 650µ'10.8 10.4 10.0µ"9.9 9.9 10.6 3'9.6 10.0 9.5 3"0.7 0.8 1.0

频率(兆赫)450550650'10.810.410.0"9.99.910.63'9.610.09.53"0.70.81.0

Table 6

6

[image]

[图片]

Embodiment 4

实施例4

This embodiment provides a method for preparing a P-band traveling wave suppression material,which includes the following steps:

本实施例提供了一种制备p波段行波抑制材料的方法,该方法包括以下步骤:

The preparation method of the rubber compound is the same as that in the first embodiment,and the thickness of the kneaded film is 2 mm.The material composition included 20 parts of ethylene propylene diene monomer(Dow 4770P),90 parts of flaky carbonyl iron(LDXB-100),0.2 parts of triethylenetetramine,0.2 parts of promoter MZ and 0.1 parts of phenol.

所述橡胶化合物的制备方法与第一实施方式相同,所述捏合膜的厚度为2mm。材料组成包括20份三元乙丙橡胶单体(Dow4770P)90份片状羰基铁(LDXB-100)0.2份三乙烯四胺、0.2份促进剂MZ0.1份苯酚。

Six sheets of green film were placed in a parallel stack in a mold,160°C/20 MPa,and hot pressed for 20 min to obtain a 5 mm thick P-band traveling wave suppression sheet.

160c/20mpa的模具中,将6片绿色薄膜平行叠加,热压20min,得到5mm厚的p波段行波抑制片。

The samples were tested for performance.The test results of magnetic permeability and dielectric constant in the range of 450 MHz to 650 MHz at room temperature are shown in Table 7.The real and imaginary parts of the magnetic permeability of the sample at 450 MHz were 9.4 and 8.0,respectively.The attenuation values of the traveling wave of each frequency point are obtained by simulation calculation as shown in Table 8.

对样品进行了性能测试。磁导率和介电常数在450mhz650mhz的室温范围内的测试结果见表7。在450mhz下,样品磁导率的实部和虚部分别为9.48.0。通过模拟计算得到了每个频率点的行波衰减值,如表8所示。

Table 7

7

Frequency(MHz)450 550 650µ'9.4 8.7 8.0µ"8.0 8.3 9.3 3'8.8 9.2 9.2 3"1.0 1.0 1.1

频率(兆赫)450550650'9.48.78.0"8.08.39.33'8.89.29.23"1.01.01.1

Table 8

8

[image]

[图片]

Embodiment 5

实施例5

This embodiment provides a method for preparing a P-band traveling wave suppression material,which includes the following steps:

本实施例提供了一种制备p波段行波抑制材料的方法,该方法包括以下步骤:

(1)Sheet-shaped ferrosilicon-aluminum(BNA-130)coated ferrite technology:10 parts of manganese-zinc ferrite and 100 parts of FeSiAl are selected,converted into the required molar mass of manganese-zinc ferrite,according to Fe<3+>,A mixed nitrate solution was prepared in a molar ratio of Zn<2+>,Mn<2+>of 10:3:2.The FeSiAl powder was poured into the Fe-Zn-Mn mixed nitrate solution,and a 2 mol/L NaOH solution was slowly added dropwise under constant stirring to adjust the pH of the solution to 9.The precipitate was added to an appropriate amount of deionized water and transferred to a stainless steel reaction vessel,and reacted at 160°C for 5 h.After the reaction was completed,the prepared sample was first washed with deionized water to remove residual nitrate ions and sodium ions.Then,it was washed several times with absolute ethanol,and dried in a drying oven at 80°C for 3 hours to obtain a composite magnetic powder.

(1)片状硅铝铁氧体(BNA-130)包覆工艺:选择10份锰锌铁氧体和100份铁氧体,按照所需的锰锌铁氧体摩尔质量,按照fe3+配比,以zn2+mn2+配比为10:3:2制备了混合硝酸盐溶液。将FeSiAl粉末倒入Fe-Zn-Mn混合硝酸盐溶液中,在不断搅拌的条件下缓慢滴加2mol/lNaOH溶液,使溶液的pH值调节到9。将沉淀物加入适量的去离子水中,转移到不锈钢反应容器中,在160°c下反应5h。反应完成后,先用去离子水冲洗样品,去除残留的硝酸根离子和钠离子。然后,用乙醇清洗几次,在80摄氏度的干燥箱中干燥3小时,得到复合磁粉。

(2)The base was mixed with an absorbent:20 parts of a urethane rubber elastomer(BASF 1090A)was placed in an open mill and kneaded at a temperature of 140°C for the front roll and 135°C for the rear roll.After kneading into a sheet form,85 parts of the coated absorbent(1)are added,and after mixing,0.2 parts of p-diaminodiphenylmethane,0.2 part of accelerator TETD and 0.2 part of phenol are added.Mix evenly and adjust the film thickness to 2mm.

(2)底座与吸收剂混合:20份氨基甲酸乙酯橡胶弹性体(BASF1090A)放入开式轧机,前辊揉搓温度为140°c,后辊揉搓温度为135°c。将所述涂层吸收剂(1)捏合成片状后加入85份,混合后加入0.2份对二氨基二苯甲烷、0.2份促进剂TETD0.2份苯酚。混合均匀,调整薄膜厚度至2毫米。

(3)The absorbing rubber sheet is hot-pressed and vulcanized:7 pieces of(2)absorbing rubber sheets are placed in parallel in a 7.5 mm mold,placed in a hot press,set at a temperature of 130°C,a pressure of 15 MPa,and a heat pressurization for 15 minutes.forming.Remove the film and cut out the desired size and shape.

(3)吸收橡胶片热压硫化:7(2)吸收橡胶片平行置于7.5mm模具中,置于热压机中,温度130°c,压力15mpa,加热增压15分钟。形成。取出薄膜并切出所需的尺寸和形状。

The sample was tested for performance.The test results of magnetic permeability and dielectric constant in the 450MHz to 650MHz band at room temperature are shown in Table 9.The real and imaginary parts of the sample at 450 MHz have a real and imaginary part of 12 and 10.9,respectively.The attenuation values of the traveling wave of each frequency point are obtained by simulation calculation as shown in Table 10.

对样品进行了性能测试。在450mhz650mhz频段室温下,磁导率和介电常数的测试结果如表9所示。在450兆赫兹处,样品的实部和虚部分别有1210.9的实部和虚部。通过模拟计算得到了每个频率点的行波衰减值,如表10所示。

Table 9

表九

Frequency(MHz)450 550 650µ'12.0 11.2 10.0µ"10.9 10.3 11.5 3'9.2 9.0 9.1 3"0.8 0.8 0.9

频率(兆赫)450550650'12.011.210.0"10.910.311.53'9.29.09.13"0.80.80.9

Table 10

10

[image]

[图片]

Embodiment 6

体现6

This embodiment provides a method for preparing a P-band traveling wave suppression material,which includes the following steps:

本实施例提供了一种制备p波段行波抑制材料的方法,该方法包括以下步骤:

(1)Ferrous silicon aluminum(BNA-130)surface treatment coated ferrite:10 parts of manganese zinc ferrite and 100 parts of FeSiAl are selected,converted to the required molar mass of manganese zinc ferrite,according to Fe<3+>,Zn<2+>,Mn<2+>molar ratio 10:4:3 configuration mixed nitrate solution.The FeSiAl powder was poured into the Fe-Zn-Mn mixed nitrate solution,and a 2 mol/L NaOH solution was slowly added dropwise under constant stirring to adjust the pH of the solution to 11.The precipitate was added to an appropriate amount of deionized water and transferred to a stainless steel reaction vessel,and reacted at 200°C for 7 h.After the reaction was completed,the prepared sample was first washed with deionized water to remove residual nitrate ions and sodium ions.Then,it was washed several times with absolute ethanol,and dried in a drying oven at 80°C for 3 hours to obtain a composite magnetic powder.

(1)亚铁硅铝(BNA-130)表面处理铁氧体:选择10份锰锌铁氧体和100份铁氧体,按照fe3+zn2+mn2+摩尔比10:4:3组态混合硝酸盐溶液转化为所需的锰锌铁氧体摩尔质量。将FeSiAl粉末倒入Fe-Zn-Mn混合硝酸盐溶液中,在不断搅拌的条件下缓慢滴加2mol/lNaOH溶液,使溶液pH调节到11。将沉淀物加入适量的去离子水中,转移到不锈钢反应容器中,在200°c下反应7小时。反应完成后,先用去离子水冲洗样品,去除残留的硝酸根离子和钠离子。然后,用乙醇清洗几次,在80摄氏度的干燥箱中干燥3小时,得到复合磁粉。

(2)The base body is mixed with the absorbent:20 parts of the acrylate rubber elastic(AR840)body is placed in an open mill for kneading,and the kneading temperature is:front roll temperature 80°C,rear roll temperature 75°C,to be kneaded After the sheet is formed,(1)45 parts of the absorbent and the flaky carbonyl iron are added,and after mixing,0.2 parts of triethylenetetramine,0.2 part of accelerator TMTM and 0.15 parts of phenol are added,uniformly mixed,and the thickness is adjusted.2mm.

(2)基体与吸收剂混合:将丙烯酸酯橡胶弹性体(AR840)20部分放入开式轧机揉捏,揉捏温度为:前辊温度80°c,后辊温度75°c,揉捏成型后,(1)加入吸收剂和片状碳基铁45部分,混合后加入0.2部分三胺、0.2部分四甲基四胺和0.15部分促进剂,均匀混合,调整苯酚厚度。2毫米。

(3)The absorbing rubber sheet is hot-pressed and vulcanized:7 pieces of the absorbing rubber sheets in(2)are placed in parallel in a 9 mm mold,placed in a hot press,set at a temperature of 90°C,a pressure of 20 MPa,and a heat-cured vulcanization for 15 minutes.forming.Remove the film and cut out the desired size and shape.

(3)吸收橡胶片热压硫化:(2)中吸收橡胶片7片平行放置在9mm模具中,置于热压机中,温度90°c,压力20MPa,热硫化15分钟。形成。取出薄膜并切出所需的尺寸和形状。

The samples were tested for performance.The test results of magnetic permeability and dielectric constant in the 450 MHz to 650 MHz band at room temperature are shown in Table 11.The real and imaginary parts of the magnetic permeability of the sample at 450 MHz were 11.4 and 10.4,respectively.The traveling wave attenuation values of each frequency point are obtained by simulation calculation as shown in Table 12.

对样品进行了性能测试。在450兆赫至650兆赫频段的室温下,磁导率和介电常数的测试结果见表11。在450mhz下,样品磁导率的实部和虚部分别为11.410.4。通过模拟计算得到了每个频率点的行波衰减值,如表12所示。

Table 11

11

Frequency(MHz)450 550 650µ'11.4 11.4 11.2µ"10.4 10.3 10.6 3'8.6 9.0 8.8 3"0.8 0.9 1.0

频率(兆赫)450550650'11.411.411.2"10.410.310.63'8.69.08.83"0.80.91.0

Table 12

12

[image]

[图片]

Example 7

例子七

This embodiment provides a method for preparing a P-band traveling wave suppression material,which includes the following steps:

本实施例提供了一种制备p波段行波抑制材料的方法,该方法包括以下步骤:

(1)Ultrafine iron powder(JS-D01)surface treatment coated with SiO2:100 parts of ultrafine iron powder with 200 parts of absolute ethanol,6 parts of 3-aminopropyltriethoxysilane(APTES)coupling agent and deionized After mixing at room temperature for 2 h,14 parts of tetraethyl orthosilicate(TEOS)was added to the system,and stirred at 40-800 r/min in a water bath at 40°C for 3 h,initially on the surface of the iron powder particles.A SiO2 insulating coating is obtained.The coated powder was rinsed with absolute ethanol for 4 to 5 times to remove the unreacted organic matter,and dried at 60°C for 4 hours.The dried powder was heat-treated at 500°C for 2 h in a hydrogen atmosphere,and after cooling,an ultrafine iron powder composite powder having a uniform surface coated with SiO 2 was obtained.

(1)超细铁粉(JS-D01)表面处理采用SiO2:100:200:6:3-氨基丙基三乙氧基硅烷(APTES)偶联剂和去离子化的超细铁粉(JS-D01),在室温下混合2小时后,加入14:14:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:10:1。制备了SiO2绝缘涂层。涂层粉末用乙醇冲洗45次以去除未反应的有机物质,然后在60°c下干燥4小时。干燥后的粉末在500°c的氢气氛中热处理2h,冷却后得到表面均匀包覆sio2的超细铁粉复合粉末。

(2)The preparation method of the rubber compound is the same as that in the first embodiment,and the thickness of the kneaded film is 2 mm.The material composition included 20 parts of ethylene propylene diene monomer(Dow 4770P),110 parts(1)of the coated absorbent,0.1 part of triethylenetetramine,0.1 part of promoter MZ and 0.1 part of phenol.

(2)所述橡胶化合物的制备方法与第一实施方案相同,所述捏合膜的厚度为2mm。材料组成包括二元乙丙橡胶单体(Dow4770P)20份,涂层吸附剂(1)110份,三乙烯四胺(0.1)0.1份,促进剂MZ(0.1)和苯酚(0.1)

9 sheets of green film were placed in a parallel stack in a mold,100°C/25 MPa,and heat-pressed for 15 minutes to obtain a 10 mm thick P-band traveling wave suppression sheet.

100c/25mpa的模具中,将9片绿色薄膜平行叠加,热压15min,得到10mm厚的p波段行波抑制片。

The samples were tested for performance.The test results of magnetic permeability and dielectric constant in the 450 MHz to 650 MHz band at room temperature are shown in Table 13.The real and imaginary parts of the magnetic permeability of the sample at 450 MHz were 10.8 and 10.2,respectively.The attenuation values of the traveling wave of each frequency point are obtained by simulation calculation as shown in Table 14.

对样品进行了性能测试。在450兆赫至650兆赫频段的室温下,磁导率和介电常数的测试结果见表13。在450mhz下,样品磁导率的实部和虚部分别为10.810.2。通过模拟计算得到了每个频率点的行波衰减值,如表14所示。

Table 13

13

Frequency(MHz)450 550 650µ'10.8 10.2 10.6µ"10.2 10.5 10.7 3'8.8 9.2 8.6 3"1.0 1.1 0.9

频率(兆赫)450550650'10.810.210.6"10.210.510.73'8.89.28.63"1.01.10.9

Table 14

14

[image]

[图片]

Example eight

例子八

This embodiment provides a method for preparing a P-band traveling wave suppression material,which includes the following steps:

本实施例提供了一种制备p波段行波抑制材料的方法,该方法包括以下步骤:

(1)Sheet-like ferrosilicon-aluminum(BNA-130)and ultra-fine iron powder(JS-D01)surface-coated SiO2:50 parts of sheet-like ferrosilicon and 50 parts of ultrafine iron powder mixed absorbent with 200 parts Water ethanol,6 parts of 3-aminopropyltriethoxysilane(APTES)coupling agent and deionized water were mixed.After stirring at room temperature for 1 h,12 parts of tetraethyl orthosilicate(TEOS)was added to the system.The mixture was stirred in a 40°C water bath for 3 h at a speed of 500 to 800 r/min,and an SiO 2 insulating coating layer was initially obtained on the surface of the iron powder particles.The coated powder was rinsed with absolute ethanol for 4 to 5 times to remove the unreacted organic matter,and dried at 60°C for 4 hours.The dried powder is heat-treated at 500°C for 1 h in a hydrogen atmosphere,and after cooling,an ultrafine iron powder composite powder having a uniform surface coated with SiO 2 is obtained.

(1)片状硅铝铁(BNA-130)和超细铁粉(JS-D01)表面包覆SiO2:50份片状硅铁,50份超细铁粉与200份水乙醇混合,63-氨丙基三乙氧基硅烷偶联剂(APTES)和去离子水混合。在室温下搅拌1h后,加入12份四乙氧基硅烷到体系中。在40c水浴中以500800r/min的速度搅拌3h,初步在铁粉颗粒表面形成了sio2绝缘涂层。涂层粉末用乙醇冲洗45次以去除未反应的有机物质,然后在60°c下干燥4小时。干燥后的粉末在500°c的氢气氛中热处理1h,冷却后得到表面均匀涂有sio2的超细铁粉复合粉末。

(2)The preparation method of the rubber compound is the same as that in the fifth embodiment,and the thickness of the kneaded film is 3 mm.The material composition included 20 parts of urethane rubber elastomer(BASF 1090A),80 parts(1)of the mixed absorbent,0.2 parts of triethylenetetramine,0.2 parts of promoter MZ and 0.2 parts of phenol.

(2)所述橡胶化合物的制备方法与第五实施方式相同,所述捏合膜的厚度为3mm。材料组成包括20份聚氨酯橡胶弹性体(BASF1090A)80份混合吸水剂(1)0.2份三乙烯四胺、0.2份促进剂MZ0.2份苯酚。

Four sheets of green film were placed in a parallel stack in a mold,160°C/15 MPa,and hot pressed for 15 min to obtain a 7 mm thick P-band traveling wave suppression sheet.

160c/15mpa的模具中,将4片绿色薄膜平行叠加,热压15min,得到7mm厚的p波段行波抑制片。

The performance test of the sample is shown in Table 15 for the magnetic permeability and dielectric constant in the 450 MHz to 650 MHz band at room temperature.The real and imaginary parts of the magnetic permeability of the sample at 450 MHz were 11.8 and 10.7,respectively.The traveling wave attenuation values of each frequency point are obtained by simulation calculation as shown in Table 16.

15显示了样品在450mhz650mhz频段的磁导率和介电常数的性能测试。在450mhz下,样品磁导率的实部和虚部分别为11.810.7。通过模拟计算得到了每个频率点的行波衰减值,如表16所示。

Table 15

15

Frequency(MHz)450 550 650µ'11.8 11.9 11.6µ"10.7 11.3 11.6 3'7.8 7.6 7.9 3"1.0 1.2 1.1

频率(兆赫)450550650'11.811.911.6"10.711.311.63'7.87.67.93"1.01.21.1

Table 16

16

[image]

[图片]

Example nine

例九

This embodiment provides a method for preparing a P-band traveling wave suppression material,which includes the following steps:

本实施例提供了一种制备p波段行波抑制材料的方法,该方法包括以下步骤:

(1)Ultrafine iron powder(JS-D01)surface treatment coated with SiO2:100 parts of ultrafine iron powder with 200 parts of absolute ethanol,3 parts of 3-aminopropyltriethoxysilane(APTES)coupling agent and deionization After mixing at room temperature for 1 h,10 parts of tetraethyl orthosilicate(TEOS)was added to the system,and stirred at 40-800 r/min in a water bath at 40°C for 3 h,initially on the surface of the iron powder particles.A SiO2 insulating coating is obtained.The coated powder was rinsed with absolute ethanol for 4 to 5 times to remove the unreacted organic matter,and dried at 60°C for 4 hours.The dried powder is heat-treated at 500°C for 1 h in a hydrogen atmosphere,and after cooling,an ultrafine iron powder composite powder having a uniform surface coated with SiO 2 is obtained.

(1)超细铁粉(JS-D01)表面处理采用SiO2:100:200:3:3-氨基丙基三乙氧基硅烷(APTES)偶联剂和去离子化处理,在室温下混合1h后,加入10:10:40-800r/min,在40°c的水浴中搅拌3h,最初是在铁粉表面进行的。制备了SiO2绝缘涂层。涂层粉末用乙醇冲洗45次以去除未反应的有机物质,然后在60°c下干燥4小时。干燥后的粉末在500°c的氢气氛中热处理1h,冷却后得到表面均匀涂有sio2的超细铁粉复合粉末。

(2)The substrate was mixed with an absorbent:20 parts of nitrile rubber(JSR-N230SL)was placed in an open mill and kneaded at a mixing temperature of 90°C for the front roll and 85°C for the rear roll.After kneading into a sheet form,95 parts of the coated absorbent(1)is added,and after mixing,0.25 parts of poly-p-nitrosobenzene,0.25 parts of accelerator TMTM,and 0.25 parts of phenol are added.Mix evenly and adjust the thickness to 2mm.

(2)基体与吸收剂混合:20份丁腈橡胶(JSR-N230SL)置于开式轧机中,前辊混合温度为90°c,后辊混合温度为85°c。将所述涂层吸收剂(1)捏合成片状后加入95份,混合后加入0.25份聚对亚硝基苯、0.25份促进剂TMTM0.25份苯酚。混合均匀,调整厚度至2毫米。

(3)The absorbing rubber sheet is hot-pressed and vulcanized:6 sheets(2)of the absorbing rubber sheet are placed in a hot press,and the temperature is set to 100°C,the pressure is 15 MPa,and the time is 15 minutes.Remove the film and cut out the desired size and shape.

(3)吸收胶片经热压硫化:将吸收胶片的6(2)置于热压机中,温度设定为100°c,压力15mpa,时间15min。取出薄膜并切出所需的尺寸和形状。

The performance of the sample was tested.The test results of magnetic permeability and dielectric constant in the 450 MHz to 650 MHz band at room temperature are shown in Table 17.The real and imaginary parts of the magnetic permeability of the sample at 450 MHz were 9.4 and 10.0,respectively.The traveling wave attenuation values of each frequency point are obtained by simulation calculation as shown in Table 18.

对样品的性能进行了测试。在450mhz650mhz频段,室温下磁导率和介电常数的测试结果见表17。在450mhz下,样品磁导率的实部和虚部分别为9.410.0。通过模拟计算得到了每个频率点的行波衰减值,如表18所示。

Table 17

17

Frequency(MHz)450 550 650µ'9.4 10.4 10.2µ"10.0 10.0 10.2 3'9.2 9.4 9.4 3"0.9 0.0 0.9

频率(兆赫)450550650'9.410.410.2"10.010.010.23'9.29.49.43"0.90.00.9

Table 18

18

微波吸收/屏蔽材料 – 专利

Tapered wave-absorbing material and preparation method thereof

锥形吸波材料及其制备方法

CN108084694

Cn108084694

The invention discloses a tapered wave-absorbing material and a preparation method thereof.The method comprises the following steps:mixing polyurethane rubber,stearic acid,an antioxidant,dicumylperoxide,a plasticizer and carbonyl iron powder in proportion for blending evenly to obtain blended polyurethane rubber;and pressing the blended polyurethane rubber in a pyramidal mold to form the tapered wave-absorbing material.The prepared tapered wave-absorbing material includes a plurality of adjacent and repetitively-arranged square-pyramid pieces and is added with the carbonyl iron powderas a wave absorber,so that the prepared tapered wave-absorbing material has a good wide-band wave absorbing performance and can realize a good wave absorbing performance in a wide-band range from microwave to millimeter wave,and by multiple reflections between wedges of the plurality of square-pyramid pieces and conversion of energy of electromagnetic waves into thermal energy by use of the wave absorber for consumption,the tapered wave-absorbing material has a good absorbing effect at specific wavelength bands.The tapered wave-absorbing material can be applied to many fields such as aerospace,high-speed locomotives,warships,radar antennas,and electronics.

本发明公开了一种锥形吸波材料及其制备方法。将聚氨酯橡胶、硬脂酸、抗氧剂、过氧化二异丙苯、增塑剂、羰基铁粉按一定比例混合均匀得到混合型聚氨酯橡胶,并将混合型聚氨酯橡胶在锥形模内压制成锥形吸波材料。所制备的锥形吸波材料包括多个相邻重复排列的方锥片,并加入羰基铁粉作为吸波剂,使制备的锥形吸波材料具有良好的宽带吸波性能,并能在微波至毫米波的宽带范围内实现良好的吸波性能,通过多个方锥片之间的多次反射以及利用该锥形吸波材料将电磁波能量转化为热能,在特定波段具有良好的吸波效果。锥形吸波材料可广泛应用于航空航天、高速机车、舰船、雷达天线、电子等领域。

Abstract The invention discloses a cone absorbing material and a preparation method thereof,the method comprising:mixing urethane rubber,stearic acid,anti-aging agent,dicumyl peroxide,plasticizer and carbonyl iron powder in proportion.Uniformly,a urethane rubber is obtained;the urethane rubber is pressed and formed in a pyramidal mold to obtain a tapered absorbing material.The tapered energy absorbing material has a wide broadband absorbing property due to the inclusion of a plurality of adjacent and repeatedly arranged quadrangular pyramids and the addition of the absorbing agent carbonyl iron powder,and can realize wide frequency from microwave to millimeter wave.Good absorbing properties in the range,and can be consumed by multiple reflections between the tips of a plurality of quadrangular pyramids and the absorption of electromagnetic waves by the absorbing agent into thermal energy,and have good in specific bands The absorbing effect.The tapered absorbing material of the present invention can be applied to many fields such as aerospace,high-speed locomotives,ships,radar antennas,and electronics.

本发明公开了一种锥形吸收材料及其制备方法,其方法包括:将聚氨酯橡胶、硬脂酸、抗老化剂、过氧化二异丙苯、增塑剂、羰基铁粉按比例混合。均匀地得到聚氨酯橡胶,将聚氨酯橡胶压制成锥形模,得到锥形吸收材料。所述锥形吸能材料由于包含多个相邻重复排列的四边形锥体以及加入吸收剂羰基铁粉而具有宽频带吸收特性,能够实现从微波到毫米波的宽频带吸收。在该范围内具有良好的吸收性能,可以通过多个四边形金字塔尖端之间的多次反射和吸收剂对电磁波的热能吸收而消耗,在特定波段具有良好的吸收效果。本发明的锥形吸波材料可应用于航空航天、高速机车、船舶、雷达天线和电子等领域。

Conical absorbing material and preparation method thereof

锥形吸波材料及其制备方法

Technical field

技术领域

The invention relates to the field of composite materials,in particular to a cone absorbing material and a preparation method thereof.

本发明涉及复合材料领域,具体涉及一种锥形吸波材料及其制备方法。

Background technique

背景技术

Absorbing material is a type of material that absorbs the energy of electromagnetic waves that are projected onto its surface.In engineering applications,in addition to requiring the absorbing material to have a high absorption rate for electromagnetic waves in a wide frequency band,it is also required to have light weight,temperature resistance,moisture resistance,corrosion resistance and the like.

吸收材料是一种能够吸收投射到其表面的电磁波能量的材料。在工程应用中,除了要求吸波材料对电磁波具有较高的宽频带吸收率外,还要求吸波材料具有轻质、耐温、耐湿、耐腐蚀等性能。

At present,patch-type materials generally have the disadvantage of high surface density,and the temperature resistance is generally lower than 100°C,which cannot meet the mechanical properties of equipment such as aircraft.A microporous absorbing material having an array structure surface developed,and some materials are subjected to a microcellular foaming process during vulcanization,and the obtained material has a small surface density,but the absorbing agent used is micron.Conductive carbon black,although conductive carbon black is used as a absorbing agent on the one hand and as a reinforcing agent on the other hand,the biggest disadvantage of using carbon black as an absorbent is that the absorbing property is poor and cannot be very good.Meet the absorbing requirements of cutting-edge technical equipment such as ship equipment.

目前,贴片式材料普遍存在表面密度高、耐温性能普遍低于100°c的缺点,不能满足飞机等设备的力学性能要求。研制了一种具有阵列结构表面的微孔吸波材料,某些材料在硫化过程中经过微孔发泡处理,所得材料表面密度较小,但所用吸波剂为微米级。导电炭黑虽然一方面用作吸收剂,另一方面用作增强剂,但使用炭黑作吸收剂的最大缺点是吸收性能差,不能很好地吸收。满足船舶设备等尖端技术设备的吸波要求。

Based on this,an attempt was made to find an absorbing material with better absorbing properties.

在此基础上,尝试寻找一种具有较好吸波性能的吸波材料。

Summary of the invention

本发明概述

In view of the problems in the related art,the present invention proposes a method for preparing a tapered absorbing material to solve the problem of poor absorbing properties of the absorbing material in the prior art.

针对相关技术中存在的问题,本发明提出了一种制备锥形吸波材料的方法,以解决现有技术中吸波材料吸波性能差的问题。

According to one aspect of the present invention,there is provided a method for preparing a tapered absorbing material comprising:pressing a urethane rubber,a stearic acid,an antioxidant,dicumyl peroxide,a plasticizer,and a carbonyl iron powder The mixture is uniformly mixed and mixed to obtain a urethane rubber which is densely mixed;the urethane rubber is pressed and formed in a pyramidal mold to obtain a tapered absorbing material.

根据本发明的一个方面,提供了一种制备锥形吸收材料的方法,包括:压制聚氨酯橡胶、硬脂酸、抗氧剂、过氧化二异丙基、增塑剂和羰基铁粉。

In the above method,urethane rubber,stearic acid,antioxidant,dicumyl peroxide,plasticizer and carbonyl iron powder are mixed in proportion in an internal mixer and at a temperature of 65 to 85°C.The step of mixing evenly.

在上述方法中,将聚氨酯橡胶、硬脂酸、抗氧剂、过氧化二异丙苯、增塑剂和羰基铁粉按比例混合在密炼机中,温度为6585°c。混合均匀的步骤。

In the above method,in the step of vulcanizing machine,a step of press molding the dense urethane rubber in a pyramidal mold is carried out.

在上述方法中,在硫化机的步骤中,将致密聚氨酯橡胶按金字塔形模压成型。

In the above method,in press molding,vulcanization is carried out at a temperature of 160 to 170°C,and the vulcanization time is 25 to 30 min.

在上述方法中,在模压成型中,硫化温度为160170°c,硫化时间为2530分钟。

In the above method,100 parts by weight of urethane rubber,0.3 to 3 parts of stearic acid,0.5 to 1.5 parts of an antioxidant,1.5 to 3 parts of dicumyl peroxide,and 2 to 6 parts by mass.The plasticizer and 50 to 80 parts of carbonyl iron powder are mixed and mixed uniformly.

在上述方法中,100份氨基甲酸乙酯橡胶,0.33份硬脂酸,0.51.5份抗氧剂,1.53份过氧化二异丙苯,26份重量。增塑剂与5080份羰基铁粉混合均匀。

In the above method,the antioxidant includes one or a combination of N-phenyl-a-aniline,N-phenyl-ß-naphthylamine,N-phenyl-N'-cyclohexyl p-phenylenediamine.

在上述方法中,抗氧化剂包括n-苯基a苯胺、n-苯基萘胺、n-苯基n'环己基对苯二胺的一种或组合。

In the above method,the plasticizer comprises one or a combination of di-n-octyl phthalate,a benzene polyester,diisobutyl phthalate,and dimethyl phthalate.

在上述方法中,增塑剂由邻苯二甲酸二正辛酯、苯聚酯、邻苯二甲酸二异丁酯和邻苯二甲酸二甲酯组成。

In the above method,the pyramid mold comprises a plurality of adjacent and repeatedly arranged quadrangular pyramid holes,the size of the pyramid mold is 330 mm×330 mm,and the height of the pyramid mold after removing the cone absorbing material is 22mm.

在上述方法中,锥形模具包括若干相邻重复排列的四角锥孔,锥形模具的尺寸为330mm330mm,去除锥形吸收材料后锥形模具的高度为22mm

In the above method,the tapered absorbing material comprises a plurality of adjacent and repeatedly arranged quadrangular pyramids.

在上述方法中,所述锥形吸波材料包括多个相邻且重复排列的四边形锥体。

According to an aspect of the invention,there is provided a tapered absorbing material prepared by the method of any one of claims 1-9.

根据本发明的一个方面,提供了一种用权利要求1-9中的任何一个的方法制备的锥形吸收材料。

The tapered absorbing material provided by the invention comprises a plurality of adjacent and repeatedly arranged quadrangular pyramids and is added with a absorbing agent carbonyl iron powder,so that the broadband absorbing property is good,and the microwave to millimeter wave can be realized.Good absorbing properties in a wide frequency range,and can be consumed by multiple reflections between the tips of a plurality of quadrangular pyramids and in which the absorbing agent converts the energy of electromagnetic waves into heat energy,and has a specific band Good absorbing effect.The tapered absorbing material of the present invention can be applied to many fields such as aerospace,high-speed locomotives,ships,radar antennas,and electronics.

本发明提供的锥形吸波材料包括多个相邻重复排列的四边形锥体,并加入吸波剂羰基铁粉,使其具有良好的宽带吸波性能,可实现微波至毫米波。在较宽的频率范围内具有良好的吸收性能,能被多个四边形金字塔尖端之间的多次反射所消耗,其中吸收剂将电磁波的能量转化为热能,并具有特定的波段良好的吸收效果。本发明的锥形吸波材料可应用于航空航天、高速机车、船舶、雷达天线和电子等领域。

DRAWINGS

图则

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art,the drawings to be used in the embodiments will be briefly described below.Obviously,the drawings in the following description are only some of the present invention.For the embodiments,those skilled in the art can obtain other drawings according to the drawings without any creative work.

为了更清楚地说明本发明的实施例或现有技术中的技术解决方案,将在下面简要描述实施例中使用的图纸。显然,下面描述的图纸只是本发明的一部分。对于具体化的产品,本领域的技术人员可以根据图纸获得其他图纸,不需要任何创造性的工作。

1 is a partial structural schematic view of a tapered absorbing material according to an embodiment of the present invention.

1是根据本发明实施例的锥形吸波材料的部分结构示意图。

Detailed ways

详细的方法

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.It is obvious that the described embodiments are only a part of the embodiments of the present invention,but not all embodiments.All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention are within the scope of the present invention.

本发明实施例中的技术解决方案参照本发明实施例中的附图,在下文中清楚和完整地描述。显然,所述实施例只是本发明实施例的一部分,而不是所有实施例。本技术中基于本发明实施例的普通技能者获得的所有其他实施例都在本发明的范围内。

Method for preparing a tapered absorbing material

锥形吸波材料的制备方法

Step 1:Polyurethane rubber,stearic acid,anti-aging agent,dicumyl peroxide,plasticizer and carbonyl iron powder are mixed and mixed in proportion to obtain a dense polyurethane rubber.In a preferred embodiment,in this step,100 parts by weight of urethane rubber,0.3 to 3 parts of stearic acid,0.5 to 0.5 parts by mass in an internal mixer and at a temperature of 65 to 85°C.1.5 parts of an antioxidant,1.5 to 3 parts of dicumyl peroxide,2 to 6 parts of a plasticizer,and 50 to 80 parts of carbonyl iron powder are mixed and uniformly mixed.Among them,the antioxidant includes one or a combination of N-phenyl-a-aniline,N-phenyl-ß-naphthylamine,N-phenyl-N'-cyclohexyl p-phenylenediamine.The plasticizer includes one or a combination of di-n-octyl phthalate,benzene polyacrylates,diisobutyl phthalate,and dimethyl phthalate.In this step,the additive is not limited to the additives such as antioxidants and plasticizers listed in the step,and other additives may be added according to actual conditions and needs.In this step,a certain proportion of the absorbing agent carbonyl iron powder is added to further improve the absorbing properties of the finally obtained tapered absorbing material.The carbonyl iron powder has strong absorbing ability and large magnetic loss,but its density is large,the absorbent has a large duty ratio,and has a large specific surface area.Therefore,it is difficult to mix with rubber,so In the invention,the good mixing effect of the carbonyl iron powder and the urethane rubber is achieved by adjusting the ratio of various auxiliaries to ensure uniform mixing of the carbonyl iron powder and the urethane rubber.

第一步:将聚氨酯橡胶、硬脂酸、抗老化剂、过氧化二异丙苯、增塑剂、羰基铁粉按一定比例混合,得到致密的聚氨酯橡胶。在一个优选的实施方案中,在这一步骤中,100份重量的聚氨酯橡胶,0.33份硬脂酸,0.50.5份重量在密炼机中,温度在6585°c1.5份抗氧化剂,1.53份过氧化二异丙苯,26份增塑剂,5080份羰基铁粉混合均匀。其中,抗氧化剂包括n-苯基a苯胺、n-苯基萘胺、n-苯基n'环己基对苯二胺的一种或组合。增塑剂包括邻苯二甲酸二正辛酯、苯聚丙烯酸酯、邻苯二甲酸二异丁酯和邻苯二甲酸二甲酯的一种或一种组合。在此步骤中,添加剂不限于步骤中列出的抗氧剂和增塑剂等添加剂,可根据实际条件和需要添加其他添加剂。在此步骤中,加入一定比例的吸收剂羰基铁粉,进一步提高最终得到的锥形吸波材料的吸波性能。羰基铁粉吸收能力强,磁损耗大,但密度大,吸收剂占空比大,比表面积大。本发明通过调整各种助剂的配比,保证了羰基铁粉与聚氨酯橡胶的均匀混合,达到了羰基铁粉与聚氨酯橡胶的良好混合效果。

Step 2:Press-molding the dense polyurethane rubber in a pyramidal mold to obtain a tapered absorbing material.In this step,in the step of press-molding the urethane rubber in a pyramidal mold in a flat vulcanizer,vulcanization is carried out at a temperature of 160 to 170°C,and the vulcanization time is 25 to 30 min..In this step,the pyramid mold used includes a plurality of adjacent and repeatedly arranged quadrangular pyramid holes.Preferably,the pyramid mold has a size of 330 mm×330 mm,and the pyramidal mold removes the cone absorbing wave.The height behind the material is 22mm(including the base).In this step,since the tapered absorbing material to be prepared has a plurality of quadrangular conical members arranged in a dense and convex shape,it is necessary to control the press forming process in the press forming,and the preparation method provided by the present invention has The tapered mold of a specific structure and the process of controlling the press forming ensure the integrity of the press-forming of the tapered absorbing material.1 is a partial structural schematic view of a tapered absorbing material according to an embodiment of the present invention.As shown in Figure 1,the resulting tapered absorbing material comprises a plurality of adjacent and densely repeating quadrangular pyramids 1.

步骤2:在锥形模具中压制致密的聚氨酯橡胶以获得锥形吸收材料。在平板硫化机中,将聚氨酯橡胶按金字塔模压成型,硫化温度为160170°c,硫化时间为2530min.在该步骤中,所使用的金字塔模具包括多个相邻且重复排列的四边形金字塔孔。优选地,锥形模具具有尺寸为330毫米330毫米,并且锥形模具去除锥形吸收波。材料后面的高度是22毫米(包括底座)。在此步骤中,由于要制备的锥形吸波材料具有多个排列成致密凸形的四边形锥形构件,因此需要控制压力成形过程,本发明提供的制备方法具有特定结构的锥形模具和控制压力成形过程,保证了锥形吸波材料压力成形的完整性。1是根据本发明实施例的锥形吸波材料的部分结构示意图。如图1所示,由此产生的锥形吸收材料包括多个相邻且密集重复的四边形锥体1

The tapered absorbing material provided by the invention comprises a plurality of adjacent and repeatedly arranged quadrangular pyramids and is added with a absorbing agent carbonyl iron powder,so that the broadband absorbing property is good,and the microwave to millimeter wave can be realized.Good absorbing properties in a wide frequency range,and can be consumed by multiple reflections between the tips of a plurality of quadrangular pyramids and in which the absorbing agent converts the energy of electromagnetic waves into heat energy,and has a specific band Good absorbing effect.The tapered absorbing material of the present invention can be applied to many fields such as aerospace,high-speed locomotives,ships,radar antennas,and electronics.

本发明提供的锥形吸波材料包括多个相邻重复排列的四边形锥体,并加入吸波剂羰基铁粉,使其具有良好的宽带吸波性能,可实现微波至毫米波。在较宽的频率范围内具有良好的吸收性能,能被多个四边形金字塔尖端之间的多次反射所消耗,其中吸收剂将电磁波的能量转化为热能,并具有特定的波段良好的吸收效果。本发明的锥形吸波材料可应用于航空航天、高速机车、船舶、雷达天线和电子等领域。

Example 1

例子一

100 parts by weight of polyurethane rubber,2 parts of stearic acid,1 part of antioxidant N-phenyl-a-aniline,2 parts of dicumyl peroxide,3 parts of plasticizer orthobenzene Di-n-octyl dicarboxylate and 60 parts of carbonyl iron powder are mixed and kneaded uniformly in an internal mixer and at a temperature of 65°C to obtain a dense polyurethane rubber;

100份聚氨酯橡胶、2份硬脂酸、1份抗氧剂n-苯基-a-苯胺、2份过氧化二异丙苯、3份增塑剂邻苯二正辛基二羧酸酯和60份羰基铁粉在密炼机中,在65°c的温度下混炼均匀,得到致密的聚氨酯橡胶;

In the flat vulcanizing machine,the dense polyurethane rubber is press-formed in a pyramidal mold,and vulcanization is carried out at a temperature of 160°C in a press molding process,and the vulcanization time is 25 min,thereby producing a cone-shaped absorbing wave.material.Wherein,the pyramid mold comprises a plurality of adjacent and repeatedly arranged quadrangular pyramid holes,the size of the pyramid mold is 330 mm×330 mm,and the height of the pyramid mold after removing the cone absorbing material is 22 mm(including Base).

在平板硫化机中,致密聚氨酯橡胶在锥形模内压制成型,在160°c的压制成型过程中进行硫化,硫化时间为25min,从而产生锥形吸收波。材料。其中,锥形模具包括多个相邻重复排列的四边形锥孔,锥形模具尺寸为330mm330mm,去除锥形吸收材料后的锥形模具高度为22mm(包括底座)

Example 2

例子二

100 parts of urethane rubber,0.3 parts of stearic acid,0.5 part of antioxidant N-phenyl-ß-naphthylamine,2 parts of dicumyl peroxide,5 parts of benzene polyacrylate plasticizer,and 70 parts of carbonyl iron powder in an internal mixer and at a temperature of 85°C,mixed in a mass fraction,uniform to obtain a dense polyurethane rubber;

100份氨基甲酸乙酯橡胶,0.3份硬脂酸,0.5份抗氧剂n-苯基-萘胺,2份过氧化二异丙醇,5份苯系聚丙烯酸酯增塑剂,70份羰基铁粉,在密炼机中,在85°c的温度下按质量分数混合,得到致密的聚氨酯橡胶;

In the flat vulcanizing machine,the dense polyurethane rubber is press-formed in a pyramidal mold,and in the press molding process,vulcanization is performed at a temperature of 170°C and the vulcanization time is 30 min,thereby producing a cone-shaped absorbing wave.material.Wherein,the pyramid mold comprises a plurality of adjacent and repeatedly arranged quadrangular pyramid holes,the size of the pyramid mold is 330 mm×330 mm,and the height of the pyramid mold after removing the cone absorbing material is 22 mm(including Base).

在平板硫化机中,致密聚氨酯橡胶采用锥形模压制成型,在压制成型过程中,硫化温度为170°c,硫化时间为30min,产生锥形吸收波。材料。其中,锥形模具包括多个相邻重复排列的四边形锥孔,锥形模具尺寸为330mm330mm,去除锥形吸收材料后的锥形模具高度为22mm(包括底座)

Example 3

例子3

100 parts by weight of polyurethane rubber,3 parts of stearic acid,1.5 parts of antioxidant N-phenyl-N'-cyclohexyl p-phenylenediamine,1.5 parts of dicumyl peroxide,2 parts by mass The plasticizer diisobutyl phthalate and 50 parts of carbonyl iron powder are mixed and kneaded uniformly in an internal mixer and at a temperature of 70°C to obtain a dense polyurethane rubber;

聚氨酯橡胶按重量计为100份,硬脂酸为3份,抗氧剂n-苯基-n'-环己基对苯二胺为1.5份,过氧化二异丙苯为1.5份,过氧化二异丙苯为2份,增塑剂邻苯二甲酸二异丁酯和羰基铁粉为50份,在密炼机中混合均匀,温度为70°c,得到致密的聚氨酯橡胶;

In the flat vulcanizing machine,the dense polyurethane rubber is press-molded in a pyramidal mold,and vulcanization is carried out at a temperature of 165°C during the press molding process,and the vulcanization time is 38 min,thereby producing a cone-shaped absorbing wave.material.Wherein,the pyramid mold comprises a plurality of adjacent and repeatedly arranged quadrangular pyramid holes,the size of the pyramid mold is 330 mm×330 mm,and the height of the pyramid mold after removing the cone absorbing material is 22 mm(including Base).

在平板硫化机中,将致密的聚氨酯橡胶压制成锥形模,在压制成型过程中在165c的温度下进行硫化,硫化时间为38min,从而产生锥形吸收波。材料。其中,锥形模具包括多个相邻重复排列的四边形锥孔,锥形模具尺寸为330mm330mm,去除锥形吸收材料后的锥形模具高度为22mm(包括底座)

Example 4

例子四

100 parts by weight of polyurethane rubber,0.5 parts of stearic acid,0.5 part of antioxidant N-phenyl-N'-cyclohexyl p-phenylenediamine,1.8 parts of dicumyl peroxide,6 parts by mass The plasticizer and 75 parts of carbonyl iron powder are mixed and kneaded uniformly in an internal mixer and at a temperature of 69°C to obtain a dense polyurethane rubber;

聚氨酯橡胶100份,硬脂酸0.5份,抗氧剂n-苯基-n'-环己基对苯二胺0.5份,过氧化二异丙苯1.8份,6份,增塑剂和75份羰基铁粉在密炼机中混合均匀,温度69°c,得到致密的聚氨酯橡胶;

In the flat vulcanizing machine,the dense polyurethane rubber is press-formed in a pyramidal mold,and in the press molding process,vulcanization is performed at a temperature of 167°C and the vulcanization time is 27 min,thereby producing a cone-shaped absorbing wave.material.Wherein,the pyramid mold comprises a plurality of adjacent and repeatedly arranged quadrangular pyramid holes,the size of the pyramid mold is 330 mm×330 mm,and the height of the pyramid mold after removing the cone absorbing material is 22 mm(including Base).

在平板硫化机中,致密聚氨酯橡胶在锥形模内压制成型,在压制成型过程中,硫化温度为167c,硫化时间为27min,从而产生锥形吸收波。材料。其中,锥形模具包括多个相邻重复排列的四边形锥孔,锥形模具尺寸为330mm330mm,去除锥形吸收材料后的锥形模具高度为22mm(包括底座)

Example 5

例子五

100 parts by weight of polyurethane rubber,0.5 parts of stearic acid,1 part of antioxidant N-phenyl-a-aniline,3 parts of dicumyl peroxide,3 parts of plasticizer orthobenzene Dimethyl diformate and 80 parts of carbonyl iron powder are mixed and kneaded uniformly in an internal mixer at a temperature of 82°C to obtain a dense polyurethane rubber;

100份聚氨酯橡胶、0.5份硬脂酸、1份抗氧剂n-苯基-a-苯胺、3份过氧化二异丙苯、3份增塑剂邻苯二甲酸二甲酸酯和80份羰基铁粉在82°c的密炼机中混合均匀捏合成致密的聚氨酯橡胶;

In the flat vulcanizing machine,the dense polyurethane rubber is press-formed in a pyramidal mold,and vulcanization is carried out at a temperature of 162°C for 25 minutes in the press molding process,thereby producing a cone-shaped absorbing wave.material.Wherein,the pyramid mold comprises a plurality of adjacent and repeatedly arranged quadrangular pyramid holes,the size of the pyramid mold is 330 mm×330 mm,and the height of the pyramid mold after removing the cone absorbing material is 22 mm(including Base).

在平板硫化机中,致密聚氨酯橡胶在锥形模内压制成型,在压制成型过程中在162°c的温度下硫化25分钟,产生锥形吸收波。材料。其中,锥形模具包括多个相邻重复排列的四边形锥孔,锥形模具尺寸为330mm330mm,去除锥形吸收材料后的锥形模具高度为22mm(包括底座)

The above are only the preferred embodiments of the present invention,and are not intended to limit the present invention.Any modifications,equivalents,improvements,etc.,which are within the spirit and scope of the present invention,should be included in the scope of the present invention.within.

上述只是本发明的优选实施例,并不打算限制本发明。任何在本发明的精神和范围内的修改、等价物、改进等,都应该包括在本发明的范围内。内部。

微波吸收/屏蔽材料 – 专利

METHOD OF OBTAINING POLYMER COMPOSITION FOR HIGH-FREQUENCY ENERGY ABSORBING

高频吸能聚合物组分的获取方法

RU2633903

Ru2633903

FIELD:radio engineering,communication.SUBSTANCE:method of obtaining a polymer composition for high-frequency energy absorbing is based on the fact that components of the polymer composition are mixed to absorb high-frequency energy of the following makeup pts.wt.:a low molecular dimethylsiloxane caoutchouc SKTN 15-25,carbonyl iron P-10 105-175,a cold curing accelerator No.68 1.5-2.5,ethyl silicate-40 1.5-2.5 and cured.The method includes the steps of weighing rubber of a low molecular dimethylsiloxane caoutchouc SKTN and ethyl silicate-40,the mixing these components to a uniform state for 10 minutes at a temperature of 25±10°C,then injecting into this mixture the carbonyl iron P-10,previously dried at a temperature of 120±5°C for 2-3 hours in a pan of a 2-3 cm,cooled to a temperature of 25±10°C and sieved through a sieve?0.05.A mixture of a low molecular dimethylsiloxane caoutchouc SKTN,ethyl silicate-40,carbonyl iron P-10 is thoroughly mixed for 10 minutes at a temperature 25±10°C.Then,a cold curing accelerator No.68 is injected into the prepared mixture and the mixture is mixed for 10 minutes at a temperature 25±10°C.The final mixture is kept at a temperature of 25±10°C for 10 minutes to remove air bubbles.Curing is carried out at a temperature of 25±10°C with not less than 20 hours,then at a temperature of 160±5°C for 7 hours.EFFECT:reduction of shrinkage of the composition after its curing,ensuring the stability of the composition after exposuring high temperature and cyclic temperature changes,increasing the attenuation of the microwave signal wave.

领域:无线电工程,通信物质:获得用于高频能量吸收的聚合物组合物的方法是基于这样一个事实,即聚合物组合物的组分被混合以吸收下列化合物的高频能量。低分子二甲基硅氧烷橡胶SKTN15-25,羰基铁p-10105-175,冷固化促进剂681.5-2.5,硅酸乙酯-401.5-2.5,固化。该方法包括称量低分子二甲基硅氧烷天然橡胶SKTN和硅酸乙酯-40的橡胶的步骤,将这些组分在2510°c的温度下均匀混合10分钟,然后向该混合物中注入以前在1205c的温度下烘干2-3小时的羰基铁P-10,该羰基铁P-102-3厘米的锅中冷却到2510°c并通过筛子筛过滤?0.05.低分子硅氧烷天然橡胶SKTN、硅酸乙酯-40、羰基铁P-10的混合物在2510°c下彻底混合10分钟。然后,将68号冷固化促进剂注入准备好的混合物中,在2510°c的温度下混合10分钟。最后的混合物保持在2510摄氏度的温度10分钟,以消除气泡。固化温度为2510°c,固化时间不少于20小时,然后在1605c温度下固化7小时。效果:固化后成分收缩减小,高温曝晒后成分稳定,周期性温度变化,微波信号波的衰减增大。

微波吸收/屏蔽材料 – 专利

Microwave shielding device

微波屏蔽装置

CN205711688

Cn205711688

The utility model discloses a microwave shielding device,the piece of bending including two mutual symmetric connection,bend the piece including both ends groove area and intermediate junction board,ancient piece of jade,round,flat and with a hole in its centre embedded metal cloth in the groove area,metal cloth inner chamber is filled has silicon rubber or other elastic material.In this way,the utility model relates to a microwave shielding device who goes out,through changeing between the wall design piece of bending to the microwave applicator flip horizontal wall with turning on one's side,the piece of the bending shielding material that makes up tong has effectually shielded the leakage of microwave applicator heat,has improved microwave applicator's heating efficiency.

本实用新型公开了一种微波屏蔽装置,弯曲件包括两个相互对称的连接件,弯曲件包括两端沟槽区和中间接线板,古玉片,圆形、扁平并在其中心的沟槽区嵌有一孔金属布,金属布内腔填充有硅橡胶或其他弹性材料。本实用新型涉及一种外出的微波屏蔽装置,通过将弯曲的壁面设计片改变为微波加热器侧翻的水平壁面,组成钳子的弯曲屏蔽材料片有效地屏蔽了微波加热器热量的泄漏,提高了微波加热器的加热效率。

The utility model discloses a microwave shielding device,which comprises two bending parts which are symmetrically connected with each other,the bending part comprises a grooved area at both ends and an intermediate connecting plate,wherein the grooved area is embedded with a metal cloth.The metal cloth inner cavity is filled with silicone rubber or other elastic material.Through the above manner,the microwave shielding device pointed out by the utility model designs a bending member between the horizontally flipped wall and the side flip wall of the microwave heater,and the shielding material inside the bending member is clamped,thereby effectively shielding the heat leakage of the microwave heater.The heating efficiency of the microwave heater is improved.

本实用新型公开了一种微波屏蔽装置,包括两个相互对称连接的弯曲部分,弯曲部分包括两端的沟槽区和中间连接板,所述沟槽区内嵌有金属布。金属布内腔填充硅橡胶或其它弹性材料。通过上述方式,本实用新型指出的微波屏蔽装置在微波加热器的水平翻转壁与侧翻壁之间设计了一个弯曲构件,并夹住弯曲构件内的屏蔽材料,从而有效地屏蔽了微波加热器的热泄漏。提高了微波加热器的加热效率。

Microwave shielding device

微波屏蔽装置

Technical field

技术领域

The utility model relates to a microwave heater,in particular to a microwave shielding device used in a microwave heater.

本实用新型涉及一种微波加热器,尤其是一种用于微波加热器的微波屏蔽装置。

Background technique

背景技术

Pavement maintenance mainly requires heating the pavement,especially the asphalt pavement,to soften it,and then filling the asphalt to repair the pavement.In the prior art,gas infrared radiation,open flame,or microwave heating mainly used for road asphalt heating is used to soften the asphalt of the road surface,and then new materials are added for road surface repair.

路面养护主要是对路面,特别是沥青路面进行加热软化,然后填充沥青进行修补。在现有技术中,主要用于道路沥青加热的气体红外线、明火或微波加热用于软化路面的沥青,然后添加新材料用于路面修复。

Microwave heaters are generally used in microwave heating equipment and are connected to the underside of the chassis to heat the road surface.The microwave heater is designed as a heating wall.The width of the heating wall cannot be greater than the width of the road during the walking process.Therefore,when designing the microwave heating wall,the heating wall is designed as a horizontal heating wall.And the heating wall is turned on both sides,so that the heating wall does not affect the walking of the vehicle,and the maximum Chengdu can make the heating wall and the width of the road consistent,and the heating efficiency of the microwave heater is improved.

微波加热器一般用于微波加热设备,并连接到底盘的底部,以加热路面。微波加热器设计为加热壁。在行走过程中,加热壁的宽度不能大于道路的宽度。因此,在设计微波加热墙时,将加热墙设计成水平加热墙。并且加热壁两侧翻转,使加热壁不影响车辆行走,最大可使加热壁与路面宽度一致,提高了微波加热器的加热效率。

The inverted heating wall and the horizontal heating wall are hingedly connected,and the inverted heating wall is horizontally prevented during operation,and is horizontally level with the horizontal heating wall.Due to the hinged connection,there is a long gap between the flip heating wall and the horizontal heating wall.The gap causes the microwave leakage to exceed the standard,and at the same time reduces the working efficiency of the microwave heater.

倒置加热壁与水平加热壁铰接,操作时防止倒置加热壁水平与水平加热壁水平。由于铰链连接,翻转加热墙与水平加热墙之间有较长的间隙。间隙使微波泄漏超过标准,同时降低了微波加热器的工作效率。

Utility model content

实用新型内容

The technical problem mainly solved by the utility model is to provide a microwave shielding device.By designing a bending part between the horizontally flipped wall of the microwave heater and the side flip wall,the shielding material of the bending part is clamped,and the microwave heater is effectively shielded.Heat leakage increases the heating efficiency of the microwave heater.

本实用新型主要解决的技术问题是提供一种微波屏蔽装置。通过设计微波加热器水平翻转壁与侧翻壁之间的弯曲部分,夹紧弯曲部分的屏蔽材料,有效地屏蔽了微波加热器。漏热增加了微波加热器的加热效率。

In order to solve the above technical problem,a technical solution adopted by the present invention is to provide a microwave shielding device,which comprises two bending members symmetrically connected to each other,the bending member comprising a grooved area at both ends and an intermediate connecting plate.A metal cloth is embedded in the groove region,and the inner cavity of the metal cloth is filled with silicone rubber or other elastic material.

为了解决上述技术问题,本发明采用的技术方案是提供一种微波屏蔽装置,其包括两个相互对称连接的弯曲构件,弯曲构件包括两端的沟槽区和中间连接板。所述凹槽区内嵌有金属布,所述金属布的内腔内填充有硅橡胶或其他弹性材料。

In a preferred embodiment of the present invention,the two mutually symmetric bending members are connected to each other in the opening direction of the groove portions.

在本发明的优选实施例中,两个相互对称的弯曲构件在沟槽部分的开口方向上相互连接。

In a preferred embodiment of the present invention,the groove has a width of 25-35 mm and is formed by bending a steel plate.

在本发明的一个优选实施例中,所述槽具有宽度为25-35毫米并且是通过弯曲钢板形成的。

The utility model has the beneficial effects that the microwave shielding device pointed out by the utility model designs a bending member between the horizontally flipped wall and the side flip wall of the microwave heater,and the shielding material inside the bending member is clamped,and the microwave heating is effectively shielded.The heat leakage of the device increases the heating efficiency of the microwave heater.

本实用新型的有益效果是,本实用新型所指出的微波屏蔽装置在微波加热器的水平翻转壁与侧翻壁之间设置一个弯曲构件,弯曲构件内的屏蔽材料被夹紧,微波加热得到有效屏蔽。该装置的漏热提高了微波加热器的加热效率。

DRAWINGS

图则

In order to more clearly illustrate the technical solutions in the embodiments of the present invention,the drawings used in the description of the embodiments will be briefly described below.It is obvious that the drawings in the following description are only some implementations of the present invention.For example,those skilled in the art can obtain other drawings according to these drawings without any creative work,among which:

为了更清楚地说明本发明实施例中的技术解决方案,下面将简要描述实施例描述中使用的图纸。很明显,下面描述中的图纸只是本发明的一些实现。例如,那些熟练的艺术家可以根据这些图纸获得其他的图纸,而不需要任何创造性的工作,其中包括:

1 is a schematic structural view of a microwave shielding device according to a preferred embodiment of the present invention.

1是根据本发明的优选实施例的微波屏蔽装置的示意性结构图。

Detailed ways

详细的方法

The technical solutions in the embodiments of the present invention are clearly and completely described below.It is obvious that the described embodiments are only a part of the embodiments of the present invention,and not all of the embodiments.All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

本发明实施例中的技术解决方案在下面清楚和完整地描述。显然,所述实施例只是本发明实施例的一部分,而不是所有实施例。基于本发明实施例的技术人员在没有创造性努力的情况下获得的所有其他实施例都在本发明的范围内。

Referring to FIG.1,an embodiment of the present invention includes:

参照图1,本发明的实施例包括:

A microwave shielding device comprising two bending members 1 symmetrically connected to each other,the bending member 1 comprising a groove portion 11 at both ends and an intermediate connecting plate 12,wherein the groove portion 11 is embedded with a metal cloth 2,The inner surface of the metal cloth 2 is filled with a silicone rubber 3,and the metal cloth 2 is wrapped with a polytetrafluoroethylene sheet 3 to shield the microwave leakage.

一种微波屏蔽装置,包括两个相互对称连接的弯曲构件1,弯曲构件1包括两端的凹槽部分11和中间连接板12,其中凹槽部分11嵌入金属布2,金属布2的内表面填充硅橡胶3,金属布2包裹聚四氟乙烯薄片3以屏蔽微波泄漏。

The two mutually symmetric bending members 1 are connected to each other in the opening direction of the groove portion.

所述两个相互对称的弯曲构件1沿所述槽部的开口方向相互连接。

The groove has a width of 25-35 mm and is bent by a steel plate to reduce the blind zone of microwave heating.

槽宽25-35毫米,用钢板弯曲,以减少微波加热的盲区。

The utility model has the beneficial effects that the microwave shielding device pointed out by the utility model designs a bending member between the horizontally flipped wall and the side flip wall of the microwave heater,and the shielding material inside the bending member is clamped,and the microwave heating is effectively shielded.The heat leakage of the device increases the heating efficiency of the microwave heater.

本实用新型的有益效果是,本实用新型所指出的微波屏蔽装置在微波加热器的水平翻转壁与侧翻壁之间设置一个弯曲构件,弯曲构件内的屏蔽材料被夹紧,微波加热得到有效屏蔽。该装置的漏热提高了微波加热器的加热效率。

The above description is only an embodiment of the present invention,and thus does not limit the scope of the patent of the present invention.Any equivalent structure or equivalent process transformation made by using the specification of the present invention and the contents of the drawings,or directly or indirectly Other related technical fields are equally included in the scope of patent protection of the present invention.

上述描述只是本发明的一个体现,因此不限制本发明的专利范围。利用本发明的说明书和图纸内容或者直接或者间接地进行其他相关技术领域的等效结构或者等效工艺改造,同等纳入本发明的专利保护范围。

微波吸收/屏蔽材料 – 专利

COMBAT PROTECTIVE MILITARY DRESS

战斗防护服

UA98637

Ua98637

Combat protective military dress is a bundle of clothing...are multi-layer composite structure based magnetic ferrite magnetic powders with a high dielectric losses and rubber compounds attached to the outer surface of each of the units set of clothing,...and the screening package made multiple odd number of quarters of working medium wave band that emits electromagnetic microwave radiation generator.

作战防护军服是一捆衣服...是多层复合结构的磁铁氧体磁粉,具有高介电损耗和橡胶化合物附着在每套服装的外表面...和屏蔽包由多个单位的工作波段的四分之一组成,发射电磁微波辐射发生器。

微波吸收/屏蔽材料 – 专利

Preparation method of graphene-based composite wave-absorbing material

石墨烯基复合吸波材料的制备方法

CN108034408

Cn108034408

The method comprises the following steps:firstly,preparing graphene oxide by using natural graphite powder as a raw material,using concentrated sulfuric acid and permanganate as an oxidizing agent and adopting an improved Hummers method;then,preparing neodymium-cobalt doped strontium ferrite by selecting nitrates of strontium,neodymium,cobalt and iron as raw materials,taking citric acid as a complexing agent and using a sol-gel self-propagating method;after that,preparing a graphene/neodymium-cobalt doped strontium ferrite composite material by taking dimethyl formamide as a solvent,using hexadecyl trimethyl ammonium bromide as a surface active agent,taking hydrazine hydrate asa reducing agent,and adopting a self-assembly method;finally,evenly mixing the graphene/neodymium-cobalt doped strontium ferrite composite material with an aniline monomer,and preparing a ternarynano composite material by taking ammonium persulfate as an initiator and using an in-situ polymerization method.The material is low in preparation cost,simple in technology,low in density,high inwave-absorbing ability and wide in frequency band,thus having an important application value in the aspects of microwave absorption and electromagnetic wave shielding.

该方法包括以天然石墨粉为原料,以浓硫酸和高锰酸盐为氧化剂,采用改进的Hummers法制备氧化石墨烯,然后以锶、钕、钴和铁的硝酸盐为原料,以柠檬酸为络合剂,采用溶胶-凝胶自蔓延法制备掺钕钴锶铁氧体;然后,以石墨烯/钕钴掺杂的锶铁氧体为复合材料,以二甲基甲酰胺为溶剂,十六烷基三甲基溴化铵为表面活性剂,以水合肼为还原剂,采用自组装方法,最后将石墨烯/钕钴掺杂的锶铁氧体复合材料与苯胺单体均匀混合,以纳米过硫酸铵为引发剂,采用原位聚合法制备三元复合材料。该材料制备成本低、工艺简单、密度低、吸波能力强、频带宽,在微波吸收和电磁波屏蔽等方面具有重要的应用价值。

The invention relates to a preparation method of a graphene-based composite absorbing material.Firstly,a natural graphite powder is used as a raw material,concentrated sulfuric acid and permanganate are used as oxidants,and a modified Hummers method is used to prepare graphene oxide,and then ruthenium and osmium are selected.Cobalt and iron nitrates are used as raw materials,citric acid is used as a complexing agent,samarium-cobalt-doped barium ferrite is prepared by sol-gel-self-propagation method,and then dimethylformamide is used as solvent,cetyl group III.Ammonium methylammonium bromide is a surfactant,hydrazine hydrate is a reducing agent,and graphene/samarium-cobalt-doped barium ferrite composite material is prepared by self-assembly method.Finally,graphene-yttrium-cobalt-doped barium ferrite composite material is used.The aniline monomer is uniformly mixed,and ammonium persulfate is used as an initiator to obtain a ternary nanocomposite by in-situ polymerization.The material has low preparation cost,simple process,low density,strong absorbing ability and frequency bandwidth,and has important application value in microwave absorption and electromagnetic wave shielding.

本发明涉及一种石墨烯基复合吸波材料的制备方法。首先以天然石墨粉为原料,以浓硫酸和高锰酸钾为氧化剂,采用改进的悍马法制备氧化石墨烯,然后选择钌和锇。以硝酸钴和硝酸铁为原料,柠檬酸为络合剂,采用溶胶-凝胶-自蔓延法制备了钐钴掺杂钡铁氧体,然后以丙酮为溶剂,以十六烷基III为溶剂。以甲基溴化铵为表面活性剂,水合肼为还原剂,采用自组装法制备了石墨烯/钐钴掺杂钡铁氧体复合材料。最后,使用了石墨烯--钴掺杂的钡铁氧体复合材料。将苯胺单体均匀混合,以过硫酸铵为引发剂,通过原位聚合得到三元纳米复合材料。该材料制备成本低、工艺简单、密度低、吸波能力强、频带宽度大,在微波吸收和电磁波屏蔽方面具有重要的应用价值。

Preparation method of graphene-based composite absorbing material

石墨烯基复合吸波材料的制备方法

Technical field

技术领域

The invention relates to a preparation method of a absorbing material,in particular to a preparation method of a graphene-based composite absorbing material,and belongs to the technical field of absorbing materials.

本发明涉及一种吸波材料的制备方法,具体是一种石墨烯基复合吸波材料的制备方法,属于吸波材料技术领域。

Background technique

背景技术

In the 21st century,where science and technology are developing rapidly,various electronic products have come out one after another and quickly entered the homes of ordinary people,bringing great convenience to life.However,people are worried that they are suffering from different electromagnetic waves while enjoying these benefits.Degree of violation.Long-term in the electromagnetic wave environment,it is easy to cause the human body to produce lesions,and electromagnetic waves will interfere with the normal operation of various electronic devices and communication instruments,and even cause malfunction.Electromagnetic interference is the fourth largest source of environmental pollution after industrial"three wastes".Therefore,how to effectively prevent and eliminate electromagnetic interference has become the focus of the scientific and technological community.

在科学技术飞速发展的21世纪,各种各样的电子产品相继问世,迅速进入普通人的家庭,给人们的生活带来了极大的方便。然而,人们担心他们在享受这些好处的同时也在遭受不同的电磁波。违规程度。长期处于电磁波环境中,很容易使人体产生病变,电磁波会干扰各种电子设备和通讯仪器的正常工作,甚至引起故障。电磁干扰是仅次于工业"三废"的第四大环境污染源。因此,如何有效地预防和消除电磁干扰已成为科技界关注的焦点。

Graphene,a honeycomb two-dimensional material,has been successfully ranked among the top in the list of commonly used absorbing materials due to its light weight,large specific surface area,good flexibility,good electrical conductivity and large dielectric loss.At the same time,the surface of the oxidized graphene is exposed to a large number of chemical bonds,and the polarization relaxation is more likely to occur under the action of the electromagnetic field,thereby achieving the purpose of attenuating the electromagnetic wave,which also makes the application of graphene in the field of absorbing waves more broad.However,new absorbing materials need to meet the requirements of"thin,light,wide and strong".Electrical losses are mainly derived from electron polarization,atomic polarization,intrinsic electric dipole orientation polarization,and interfacial polarization.Magnetic losses mainly include eddy current loss,hysteresis loss and residual loss.Graphene has large dielectric loss and a small amount of magnetic loss.The single graphene interface has poor impedance matching,and its loss mechanism is less,and the absorbing effect is not strong.However,since graphene has a large specific surface area,it can be combined with a magnetic loss absorbing material to form a complementary advantage.On the one hand,the combination of the electric loss absorbing material and the magnetic loss absorbing material can exert two forms of electromagnetic loss.To obtain better electromagnetic wave absorption performance;on the other hand,compounding with light weight graphene material is also beneficial to reduce the weight of the absorbing material.

石墨烯是一种蜂窝状二维材料,具有重量轻、比表面积大、柔韧性好、电导率高、介电损耗大等优点,在常用吸波材料中名列前茅。同时,氧化石墨烯的表面暴露在大量的化学键中,在电磁场的作用下,极化弛豫更容易发生,从而达到衰减电磁波的目的,这也使得石墨烯在吸收波领域的应用更加广泛。但是,新型吸波材料需要满足"薄、轻、宽、强"的要求。电损耗主要来源于电子极化、原子极化、固有电偶极取向极化和界面极化。磁损耗主要包括涡流损耗、磁滞损耗和残余损耗。石墨烯具有较大的介电损耗和少量的磁损耗。单层石墨烯界面阻抗匹配较差,损耗机理较小,吸收效果不强。然而,由于石墨烯具有很大的比表面积,它可以与磁损耗吸收材料结合形成互补优势。一方面,电损耗吸收材料和磁损耗吸收材料的结合可以产生两种形式的电磁损耗。为了获得更好的电磁波吸收性能,另一方面,与重量轻的石墨烯材料复合也有利于减轻吸收材料的重量。

Summary of the invention

本发明概述

The object of the present invention is to solve the deficiencies of the prior art and provide a method for preparing a graphene-based composite absorbing material.The method is simple,easy to operate,low in cost,and has high dielectric loss and magnetic loss of the absorbing material.Stable performance,absorbing bandwidth and good absorbing performance.

本发明的目的是解决现有技术的不足,提供一种制备石墨烯基复合吸波材料的方法。该方法简单易行,成本低,吸波材料的介电损耗和磁损耗高。性能稳定,吸收带宽大,吸收性能好。

In order to achieve the above object,the inventors combine graphene with samarium-cobalt-doped barium ferrite to improve the impedance matching thereof,and further add a conductive polymer as a coating layer in the composite system to enhance the interface bonding between the magnetic particles and graphene.At the same time,the conductive polymer itself has high dielectric loss,and the ternary composite can enhance the absorbing properties of the material in the high frequency band.

为了实现上述目标,发明者将石墨烯与钐钴掺杂的钡铁氧体结合起来,以改善其阻抗匹配,并进一步在复合系统中添加一个导电聚合物作为涂层,以增强磁性粒子与石墨烯之间的界面结合。同时,导电聚合物本身具有较高的介电损耗,三元复合材料可以提高材料在高频段的吸波性能。

The specific plan is as follows:

具体计划如下:

A graphene-based composite absorbing material is a"sandwich structure",the middle layer is graphene/samarium cobalt doped barium ferrite,and the outermost layer is polyaniline.

石墨烯基复合吸波材料为"三明治结构",中间层为石墨烯/钐钴掺杂钡铁氧体,最外层为聚苯胺。

The preparation method of the above graphene-based composite absorbing material comprises the following steps:

上述石墨烯基复合吸波材料的制备方法包括以下步骤:

(1)Preparation of graphene oxide:weigh 3~4g graphite powder,2.5~3.5G persulfate and 2~4g P2O5 are added to 15~18ml concentrated sulfuric acid,stirred at 80~85°C for 6~8h,to be cooled by the reaction system After being brought to room temperature,diluted with distilled water to a pH of 4 to 5,allowed to stand for 20 to 24 hours,filtered,washed with water until the filtrate is neutral,and the obtained product is dried to constant weight at room temperature to obtain pre-oxidized graphite;pre-oxidized graphite is added Stir well in 120~150mL concentrated sulfuric acid,and slowly add 15~18g strong oxidant in the ice water bath.After stirring evenly,slowly heat up to 35~40°C,continue to react for 2~4h,slowly add 250~to the system.300mL distilled water,followed by reaction for 2~3h,the temperature of the control system does not exceed 50°C,add 300~350mL distilled water again and stir until the system is uniform,then add 10~40ml of 30%concentration of hydrogen peroxide,the solution turns bright brown,centrifuge After separation,it is washed with hydrochloric acid solution,and finally dialyzed against distilled water for 7-8 days,and the obtained upper layer dispersion is freeze-dried to obtain graphene oxide;(2)Preparation of SNCF(samarium-cobalt-doped barium ferrite):Sr(NO3)2,Fe(NO3)is weighed according to the stoichiometric ratio of the samarium-cobalt-doped barium ferrite chemical formula Sr0.85Nd0.15Co0.15Fe11.85O19 3·9H2O,Nd(NO3)3·6H2O,Co(NO3)2·4H2O is dissolved in distilled water,and stirred to obtain a clear solution.The citric acid solution is slowly added dropwise,and the pH is adjusted to 7 after stirring,to obtain a sol.The sol is evaporated in a 75-85°C water bath and stirred to obtain a wet gel,and the wet gel is dried,and then ignited in the air to obtain a fluffy precursor,which is ground and calcined to obtain SNCF;(3)Preparation of graphene/samarium-cobalt-doped barium ferrite composite material:taking graphene oxide and samarium-cobalt-doped barium ferrite in DMF respectively,obtaining graphene oxide solution and samarium-cobalt-doped barium ferrite suspension Liquid,adding cetyltrimethylammonium bromide(CTAB)to the graphene oxide solution,dispersing uniformly,slowly adding dropwise to the samarium-cobalt-doped strontium ferrite suspension,mixing uniformly,and then reacting The system is added with hydrazine hydrate,stirred in a 95°C water bath for 12 to 14 h,then suction filtered,washed with water,alcohol washed until the filtrate is neutral,and finally vacuum dried to obtain a graphene/samarium cobalt doped barium ferrite composite material;(4)Preparation of graphene-based composite absorbing materials:taking graphene/samarium-cobalt-doped barium ferrite composite material and 1-2 ml of aniline monomer dissolved in 30-50 ml of hydrochloric acid solution,graphene/samarium-cobalt-doped barium ferrite The molar ratio of the composite material to the aniline is 1:2.5,and the dispersion is uniform to obtain a dispersion;2.5 to 3.5 g of ammonium persulfate is dissolved in 20-30 ml of hydrochloric acid solution to obtain a transparent solution,which is slowly added dropwise to the above dispersion.After stirring in an ice water bath for 12 to 15 hours,it was subjected to suction filtration,water washing,alcohol washing,and vacuum drying to obtain a graphene-based composite absorbing material.

(1)氧化石墨烯的制备:1518ml浓硫酸中加入34g石墨粉,2.53.5G过硫酸盐和24gP2O58085°c下搅拌68h,用反应体系冷却后,放入室温下,用蒸馏水稀释至pH45,静置2024小时,过滤,用水洗涤至滤液中性,所得产品在室温下干燥至恒重,得到预氧化石墨;预氧化石墨在120150mL浓硫酸中搅拌均匀,在冰水浴中缓慢加入1518g强氧化剂。搅拌均匀后,慢慢加热至35~40°c,继续反应2~4小时,慢慢加入250~300mL蒸馏水,然后反应23h,控制系统温度不超过50°c,再加入300350mL蒸馏水搅拌至系统均匀,然后加入1040ml浓度为30%的过氧化氢,溶液变成亮棕色,离心机分离后用盐酸洗涤,最后在蒸馏水中透析78天,得到的上层分散体冷冻干燥得到石墨烯氧化物;(2)制备钐钴掺杂钡铁氧体:Sr(NO3)2Fe(NO3)按钐钴掺杂钡铁氧体化学式Sr0.85Nd0.15Co0.15Fe11.85o1939h2o的化学计量比称量将Nd(NO3)36h2oCo(NO3)24h2o溶于蒸馏水中,搅拌得到清澈的溶液。将柠檬酸溶液缓慢滴加,搅拌后pH调至7,得到溶胶。溶胶在75-85°c的水浴中蒸发,搅拌得到湿凝胶,湿凝胶干燥,然后在空气中点燃得到蓬松的前驱体,经研磨和煅烧得到SNCF;(3)石墨烯/钐钴掺杂钡铁氧体复合材料的制备:DMF中分别取石墨烯氧化物和钐钴掺杂钡铁氧体,得到石墨烯氧化物溶液和钐钴掺杂钡铁氧体悬浮液,在石墨烯氧化物溶液中加入溴化十六烷基三甲铵该系统加入水合肼,在95c水浴中搅拌1214h,然后抽滤,用水洗涤,酒精洗涤至滤液中性,最后真空干燥得到石墨烯/钐钴铁氧体复合材料;(4)石墨烯基复合吸波材料的制备:以石墨烯/钐钴掺杂钡铁氧体复合材料和1-2ml苯胺单体溶于30-50ml盐酸溶液中,石墨烯/钐钴掺杂钡铁氧体复合材料与苯胺的摩尔比为1:2.5,分散均匀,得到分散体;2.53.5克过硫酸铵溶于2030毫升的盐酸溶液中,得到透明溶液,然后慢慢滴入上述分散液中。在冰水浴中搅拌12-15小时后,经过抽气过泸法、水洗、酒精洗涤和真空干燥,得到石墨烯基复合吸波材料。

Further,in the step(1),the persulfate is potassium persulfate or sodium persulfate.

此外,在步骤(1)中,过硫酸盐是过硫酸钾或过硫酸钠。

Further,in the step(1),the strong oxidizing agent is potassium permanganate or potassium dichromate.

此外,在步骤(1)中,强氧化剂是高锰酸钾或重铬酸钾。

Further,in the step(1),the hydrochloric acid solution has a volume concentration of 10%.

此外,在步骤(1)中,盐酸溶液的体积浓度为10%

Further,in the step(2),the amount of citric acid is added in a molar ratio of 1:1 to the metal ion.

此外,在步骤(2)中,柠檬酸的量以摩尔比1:1加入到金属离子中。

Further,in the step(2),the drying temperature is 120°C and the time is 10 to 12 h.

此外,在步骤(2)中,干燥温度为120°c,时间为1012小时。

Further,in the step(2),the calcination temperature is 900°C and the time is 2-4 h.

在步骤(2)中,焙烧温度为900°c,焙烧时间为24h

Further,in the step(3),the molar ratio of graphene oxide to samarium cobalt-doped barium ferrite is 6:100,and the molar ratio of cetyltrimethylammonium bromide to graphene oxide is 0.8:100.The molar ratio of hydrazine hydrate to graphene oxide was 0.7:1.

在步骤(3)中,石墨烯氧化物与钐钴掺杂钡铁氧体的摩尔比为6:100,溴化十六烷基三甲铵氧化物与石墨烯氧化物的摩尔比为0.8:100。水合肼与氧化石墨烯的摩尔比为0.7:1

Further,in the step(3),the temperature of the vacuum drying is 60°C,and the time is 10 to 12 h.

此外,在步骤(3)中,真空干燥的温度为60°c,时间为1012小时。

Further,in the step(4),the hydrochloric acid solution has a concentration of 1.0 mol/L.

此外,在步骤(4)中,盐酸溶液的浓度为1.0mol/l

The invention has the advantages that the method has the advantages of simple method,easy operation and low cost,and the prepared absorbing material has high dielectric loss and magnetic loss,stable electromagnetic performance,absorbing wave frequency bandwidth and good absorbing performance,and is in the field of electromagnetic wave shielding and electromagnetic wave absorption.Very good application prospects.

本发明的优点是方法简单,操作方便,成本低,制备的吸波材料介电损耗和磁损耗高,电磁性能稳定,吸波频带宽度大,吸波性能好,属于电磁波屏蔽和电磁波吸收领域。很好的应用前景。

DRAWINGS

图则

1 is an XRD pattern of a graphene-based composite absorbing material prepared in Example 1;2 is a graph showing the absorbing properties of the graphene-based composite absorbing material prepared in Example 1.

1是例1中制备的石墨烯基复合吸波材料的XRD图谱;2是例1中制备的石墨烯基复合吸波材料的吸波性能图谱。

Detailed ways

详细的方法

The invention is further described below in conjunction with the drawings and specific embodiments.

下文结合图纸和具体实施例进一步描述本发明。

Example 1

例子一

(1)Preparation of graphene oxide:Weigh 3g graphite powder,2.5G sodium persulfate and 2.5G P2O5 were added to 15ml concentrated sulfuric acid,stirred at 80°C for 6h,after the reaction system was cooled to room temperature,diluted with distilled water to a pH of 4 After standing for 20 h,it was filtered,washed with water until the filtrate was neutral,and the obtained product was dried to constant weight at room temperature to obtain pre-oxidized graphite;the pre-oxidized graphite was added to 120 mL of concentrated sulfuric acid,stirred uniformly,and slowly cooled in an ice water bath.Add 15G of strong oxidizing agent potassium permanganate,stir evenly,slowly heat up to 35°C,continue the reaction for 2h,slowly add 250mL distilled water to the system,then react for 2h,control system temperature does not exceed 50°C,add 350mL distilled water again To the system uniform,then add 10ml of 30%hydrogen peroxide solution,the solution turns bright brown,after centrifugation,wash with 1L volume of 10%hydrochloric acid solution,and finally dialyzed with distilled water for 7d to remove residual metal ions and acid,the obtained upper layer dispersion is freeze-dried to obtain graphene oxide GO;(2)Preparation of SNCF(samarium-cobalt-doped barium ferrite):Sr(NO3)2,Fe(NO3)3·9H2O,Nd(NO3)3·6H2O are weighed according to the stoichiometric ratio of strontium-cobalt-doped barium ferrite.Co(NO3)2·4H2O is dissolved in distilled water and stirred to obtain a clear solution.According to the molar ratio of metal ions to citric acid 1:1,citric acid is weighed as a complexing agent and dissolved in distilled water to obtain a citric acid solution.The acid solution was slowly added dropwise to the above clear solution,stirred and adjusted to pH 7,to obtain a sol.The sol was evaporated in a water bath at 80°C and stirred to obtain a wet gel.The wet gel was dried and dried at 120°C for 12 h,then Ignite in the air to obtain a fluffy precursor,calcined after grinding,calcined at 900°C for 3 h to obtain SNCF;(3)Preparation of graphene/samarium-cobalt-doped barium ferrite composite material:GO and samarium-cobalt-doped barium ferrite were weighed into dimethylformamide according to m(GO):m(SNCF)=6:100 To obtain a graphene oxide solution and a samarium-cobalt-doped barium ferrite suspension,and to add cetyltrimethylammonium bromide(CTAB)to the graphene oxide solution,(m(CTAB):m(GO))=0.8:100),ultrasonically 2h,the GO solution was slowly added dropwise to the samarium-cobalt-doped strontium ferrite suspension,and stirred for 1 h to make the mixture uniform,according to m(hydrated hydrazine):m(GO)=0.7 The ratio of 1:1,hydrazine hydrate was added to the reaction system,stirred in a water bath at 95°C for 12 h,then suction filtered,washed with water and alcohol washed until the filtrate was neutral,and dried under vacuum at 60°C for 12 h to obtain graphene/samarium cobalt doped cesium.Ferrite composite.

(1)石墨氧化物的制备:15ml浓硫酸中加入3g石墨粉、2.5G过硫酸钠和2.5GP2O5,在80°c下搅拌6h,反应体系冷却至室温,用蒸馏水稀释至pH值为4,静置20h后过滤,水洗至中性,所得产物在室温下干燥至恒重,得到预氧化物;预氧化物加入120ml浓硫酸,搅拌均匀,在冰水浴中慢慢冷却。加入15克强氧化剂高锰酸钾,搅拌均匀,慢慢加热到35°c,继续反应2小时,慢慢加入250毫升蒸馏水到系统中,然后反应2小时,控制系统温度不超过50°c,再加入350毫升蒸馏水到系统均匀,然后加入10毫升30%的过氧化氢溶液,离心后溶液变成亮棕色用1L体积的10%盐酸溶液冲洗,最后用蒸馏水透析7天以去除残留的金属离子和酸,得到的上层分散液经冷冻干燥得到氧化石墨烯GO;(2)以锶钴掺杂钡铁氧体的化学计量比为依据,制备了锶钴掺杂钡铁氧体:Sr(NO3)2Fe(NO3)39h2oNd(NO3)36h2o。将Co(NO3)24h2o溶于蒸馏水中,搅拌得到清澈的溶液。根据金属离子与柠檬酸的摩尔比为1:1,以柠檬酸为络合剂,在蒸馏水中溶解,得到柠檬酸溶液。将酸性溶液缓慢滴加到上述清液中,搅拌并调节pH值为7,得到溶胶。溶胶在80°c的水浴中蒸发,搅拌得到湿凝胶。湿凝胶在120°c下干燥12h,然后在空气中点燃得到蓬松的前驱体,研磨后煅烧,900°c煅烧3h得到SNCF;(3)石墨烯/钐钴掺杂钡铁氧体复合材料的制备:GO和钐钴掺杂钡铁氧体按m(GO):m(SNCF)6:100的比例加入丙酮,得到石墨烯氧化物溶液和钐钴掺杂钡铁氧体悬浮液在石墨烯氧化物溶液中加入溴化十六烷基三甲铵(CTAB):m(GO)0.8:100,采用超声波处理2h,将GO溶液缓慢滴加到掺钐钴的锶铁氧体悬浮液中,搅拌1h使混合物均匀,按m(水合肼):m(GO)0.7的比例为1:1在反应体系中加入水合肼,在95c水浴中搅拌12h,然后抽滤,用水和乙醇洗涤,直至滤液中性,在60c真空下干燥12h,得到石墨烯/钐钴掺杂铯。铁氧体复合材料。

(4)Preparation of graphene-based composite absorbing materials:graphene/samarium-cobalt-doped barium ferrite composite and 1 ml of aniline monomer dissolved in 30 ml of hydrochloric acid solution,graphene/samarium-cobalt-doped barium ferrite composite and aniline The molar ratio is 1:2.5,and the dispersion is uniform to obtain a dispersion;2.5 g of ammonium persulfate is dissolved in 20 ml of a 1 mol·L<-1>hydrochloric acid solution to obtain a transparent solution,which is slowly added dropwise to the above dispersion.After stirring for 12 hours in an ice water bath,it was subjected to suction filtration,water washing,alcohol washing,and vacuum drying at 60°C for 12 hours to obtain a graphene-based composite absorbing material.

(4)石墨烯/钐钴掺杂钡铁氧体复合吸波材料的制备:石墨烯/钐钴掺杂钡铁氧体复合吸波材料,苯胺单体溶解于30ml盐酸溶液中,石墨烯/钐钴掺杂钡铁氧体复合吸波材料与苯胺的摩尔比为1:2.5,分散均匀,2.5G过硫酸铵溶于20ml1moll-1盐酸溶液中,得到透明溶液,然后缓慢滴加到上述分散体中。在冰水浴中搅拌12小时后,经过抽气过泸法、水洗、酒精洗涤和60°c真空干燥12小时,得到一种石墨烯基复合吸收材料。

The phase structure analysis of the graphene-based composite absorbing material prepared in Example 1 was carried out by X-ray diffractometer.The XRD pattern is shown in Fig.1.In Fig.1,(a)indicates SNCF,and(b)indicates RGO/SNCF nanocomposite.Materials,(c)denotes RGO/SNCF/PANI nanocomposites,(d)denotes GO,and(e)denotes PANI.From Fig.1,we can see that at 30.1°,32.2°,34.1°,37.0°,40.3 Characteristic diffraction peaks appeared at°,42.3°,55.20°,56.83°and 63.31°,which is basically consistent with the characteristic peak of standard SrFe12O19,indicating that the prepared SNCF ferrite is still magnetite.Type,samarium cobalt enters the lattice of barium ferrite very well,and no other impurity phase is formed.

在实例1中制备的石墨烯基复合吸波材料的相结构分析是由X衍射仪进行的。Xrd图谱如图1所示。在图1中,(a)表示SNCF(b)表示rgo/SNCF纳米复合材料。材料,(c)表示rgo/sncf/PANI纳米复合材料,(d)表示GO(e)表示PANI。从图1可以看出,在30.1,32.2,34.1,37.0,40.3处分别出现了特征衍射峰,42.3,55.20,56.8363.31,与标准SrFe12O19的特征峰基本一致,表明制备的SNCF铁氧体仍然是磁性的。型,钐钴很好地进入钡铁氧体晶格,没有形成其他杂质相。

Figures 1(b)and(c)correspond to the XRD patterns of RGO/SNCF and RGO/SNCF/PANI,respectively.The characteristic peaks of SNCF can be clearly seen from the two graphs.The GO shown in Figure 1(a)is not shown.The characteristic peak around 10°indicates that under the action of the reducing agent hydrazine hydrate,GO is reduced to RGO,and SNCF is dispersed onto the RGO sheet by self-assembly.

1(b)(c)分别对应于rgo/sncfrgo/sncf/paniXRD图谱。从这两幅图中可以清楚地看到SNCF的特征峰。图1(a)中所示的GO没有显示。特征峰10左右表明,在还原剂水合肼的作用下,GO被还原为RGOSNCF通过自组装分散到RGO片上。

It is worth noting that no significant PANI peaks were observed in the XRD pattern of RGO/SNC/PANI,probably due to the low PANI content in the system.

值得注意的是,在rgo/snc/PANIXRD图谱中没有观察到明显的PANI峰,这可能是由于体系中PANI含量较低所致。

The electromagnetic parameters and absorbing properties of the samples were analyzed by vector network analysis.The results are shown in Fig.2.Fig.2 is the absorbing performance of the graphene-based composite absorbing materials prepared in Example 1,which is RGO with RGO content of 6%.The reflectance loss curve of/SNCF/PANI nanocomposites at different thicknesses.It can be seen from Fig.2 that the reflection loss value is-42.4dB when the thickness is 2mm,the corresponding peak frequency is 14.56GHz,and the effective absorption band is 5.7GHz.,exhibits excellent absorbing properties.

采用矢量网络分析法对样品的电磁参数和吸波性能进行了分析。结果如图2所示。图2是示例1中制备的RGO含量为6%的石墨烯基复合吸波材料的吸波性能。不同厚度下sncf/pani纳米复合材料的反射损耗曲线。从图2可以看出,当厚度为2mm时,反射损耗值为-42.4dB,相应的峰值频率为14.56GHz,有效吸收带为5.7GHz。本文介绍了一种具有优良吸波性能的新型吸波材料,该材料具有良好的吸波性能。

It is to be understood that those skilled in the art can make modifications and changes in the form of the above description,and all such modifications and changes are intended to be included within the scope of the appended claims.

需要理解的是,本领域的技术人员可以对上述描述的形式进行修改和变更,所有这些修改和变更都打算列入所附权利要求的范围。

微波吸收/屏蔽材料 – 专利

Composition for microwave shielding material

微波屏蔽材料组成

TW229336

Tw229336

composition for microwave shielding material,which comprises:(a)a 65 to 90 weight percent of iron and cobalt mixed powder blending in rubber matrix,where this mixture is obtained from carbonyl iron powder and cobalt powder after mechanical processing,where the mixing ratio is from 6.5:3.5 to 9.5:0.5,where the diameter of the matrix is from 1 to 7.5 micrometers and where the surface area is from 0.1 to 1.0 square meters per gram;(b)10 to 35 weight percent of rubber and vulcanization processing dose.

本发明涉及一种微波屏蔽材料组合物,包括:(a)在橡胶基体中混合65%90%重量的铁钴混合粉末,该混合物由羰基铁粉和钴粉经机械加工得到,混合比为6.5:3.59.5:0.5,基体直径为17.5微米,表面积为0.11.0平方米;(b)橡胶和硫化加工剂量的10%35%

微波吸收/屏蔽材料 – 专利

Microporous wave-absorbing material with low surface density and high tensile strength and preparation method

低表面密度高抗拉强度微孔吸波材料及其制备方法

CN103589010

Cn103589010

The invention discloses a microporous wave-absorbing material with low surface density and high tensile strength and a preparation method and belongs to the technical field of wave-absorbing material.According to the invention,problems of high density,low mechanical properties and poor temperature resistance of a present microwave material are solved.The preparation method comprises steps of:uniformly stirring rubber,zinc oxide,eleaostearic acid,an anti-aging agent,a flow promoter,sulphur,a promoter,a foaming agent,a plasticiser and an absorbent,banburying,open-milling,vulcanizing at 150-160 DEG C and simultaneously foaming for 25-35min so as to obtain the microporous wave-absorbing material.The total thickness of the prepared microporous wave-absorbing material is between 1.4mm and 2.0mm,and its surface density is less than 1.7kg/m<2>.The material has good wave-absorbing performance at specific wavelengths.Meanwhile,the material has good temperature resistance and mechanical property.The temperature that the material resists can reach 150 DEG C.Average value of tensile strength is greater than 8.5MPa,and the minimum elongation at break is 360%.

本发明公开了一种表面密度低、抗拉强度高的微孔吸波材料及其制备方法,属于吸波材料技术领域。本发明解决了现有微波材料密度高、机械性能低、耐温性差的问题。本发明的制备方法包括:均匀搅拌橡胶、氧化锌、电硬脂酸、抗老化剂、流动促进剂、硫磺、促进剂、发泡剂、增塑剂和吸收剂,填充、开磨、150160°c硫化,同时发泡2535min,得到微孔吸波材料。制备的微孔吸波材料总厚度在1.42.0mm之间,表面密度小于1.7kg/m2。该材料在特定波长下具有良好的吸波性能。同时,该材料具有良好的耐温性和力学性能。材料抗拉温度可达150°c,平均抗拉强度大于8.5MPa,最小断裂伸长率为360%

The invention discloses a micropore absorbing material with low surface density and high tensile strength and a preparation method thereof,and belongs to the technical field of absorbing materials.The problem that the existing microwave material has high density,low mechanical property and poor temperature resistance is solved.The preparation method of the invention comprises the steps of:mixing rubber,zinc oxide,stearic acid,anti-aging agent,flow aid,sulfur,accelerator,foaming agent,plasticizer and absorbent,and then mixing and kneading,in Vulcanization at 150-160°C and simultaneous foaming for 25-35 min gives a microporous absorbing material.The microporous absorbing material prepared by the invention has a total thickness of between 1.4 and 2.0 mm and an areal density of less than 1.7 kg/m.The material has good absorbing properties in a specific wavelength band,and has good temperature resistance and mechanics.The temperature resistance can reach 150°C,the average tensile strength is greater than 8.5 MPa,and the minimum elongation at break is 360%.

本发明公开了一种表面密度低、抗拉强度高的微孔吸波材料及其制备方法,属于吸波材料技术领域。解决了现有微波材料密度高、力学性能差、耐温性差的问题。本发明的制备方法包括以下步骤:将橡胶、氧化锌、硬脂酸、抗老化剂、助流剂、硫磺、促进剂、发泡剂、增塑剂和吸收剂混合,然后在150-160°c的硫化条件下,同时发泡25-35分钟,制成微孔吸收材料。本发明制备的微孔吸波材料总厚度在1.4-2.0mm之间,面密度小于1.7kg/m。该材料在特定波段具有良好的吸波性能,并具有良好的耐温性和力学性能。耐温性能达到150°c,平均拉伸强度大于8.5MPa,最小断裂伸长率为360%

Low-density density high tensile strength microporous absorbing material and preparation method thereof

低密度高拉伸强度微孔吸波材料及其制备方法

Technical field

技术领域

The invention relates to a microporous absorbing material with low areal density and high tensile strength and a preparation method thereof,and belongs to the technical field of absorbing materials.

本发明涉及一种面密度低、抗拉强度高的微孔吸波材料及其制备方法,属于吸波材料技术领域。

Background technique

背景技术

In the prior art,the patch type absorbing material is generally formed by mixing and rolling an adhesive with an absorbent(generally a magnetic material).By selecting different substrates and optimizing the formulation design,the performance of the absorbing materials can meet different needs.Such patch-type materials have the advantages of good uniformity,strong process controllability,stable material properties(especially electrical properties),and simple construction process.

在现有技术中,贴片式吸波材料一般是通过将粘合剂与吸收剂(一般为磁性材料)混合并滚动而形成的。通过选择不同的基底和优化配方设计,使吸波材料的性能能够满足不同的要求。这种片状材料具有均匀性好、工艺可控性强、材料性能(特别是电学性能)稳定、施工工艺简单等优点。

However,the existing patch-type absorbing materials generally have the disadvantage of high surface density,and the surface density of the absorbing sheets having a thickness of less than 1 mm has mostly exceeded 3.0 kg/m<2>,and the strength is generally about 4 MPa,and the temperature is resistant.The performance is generally lower than 100°C,which cannot meet the mechanical properties of equipment such as aircraft.

但现有的贴片式吸波材料普遍存在表面密度高的缺点,厚度小于1mm的吸波片的表面密度大多超过3.0kg/m2,强度一般在4mpa左右,耐高温。性能一般低于100°c,不能满足飞机等设备的机械性能要求。

Summary of the invention

本发明概述

The object of the present invention is to solve the problems of large surface density,low mechanical properties and poor temperature resistance of the prior art absorbing materials,and to provide a absorbing material with low areal density and high tensile strength and a preparation method thereof.

本发明的目的是解决现有吸波材料表面密度大、力学性能低、耐温性差的问题,提供一种面密度低、抗拉强度高的吸波材料及其制备方法。

The low surface density high tensile strength microporous absorbing material of the invention comprises rubber,zinc oxide,stearic acid,anti-aging agent,flow aid,sulfur,accelerator,foaming agent,plasticizer and absorbent;The mass ratio of the rubber,the foaming agent and the plasticizer is 100:(5-18):(15-25);the blowing agent is azodicarbonamide(AC),modified azo Amide(ACPW)or N,N'-dimethylpentamethyltetramine;the absorbent is micron-sized conductive carbon black,the mass of the absorbent is rubber,zinc oxide,stearic acid,anti-aging agent,flow aid 30-40%of the total mass of the agent,sulfur,accelerator,blowing agent and plasticizer.

本发明的低表面密度高拉伸强度微孔吸波材料由橡胶、氧化锌、硬脂酸、抗老化剂、助流剂、硫磺、促进剂、发泡剂、增塑剂和吸收剂组成;橡胶、增塑剂和增塑剂的质量比为100:(5-18):(15-25);发泡剂为偶氮甲酰胺(AC)、改性偶氮(ACPW)nn'-五甲基四胺;吸附剂为微米级导电炭黑,吸附剂为橡胶、氧化锌、硬脂酸、抗老化剂、助流剂、硫磺、促进剂、发泡剂、增塑剂总质量的30-40%

Preferably,the mass of the absorbent is 5-18%of the total mass of the rubber,zinc oxide,stearic acid,antioxidant,flow aid,sulfur,accelerator,foaming agent and plasticizer.

优选地,吸收剂的质量为橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺、促进剂、发泡剂和增塑剂总质量的5-18%

Preferably,the mass ratio of the rubber,zinc oxide,stearic acid,antioxidant,flow aid,sulfur and accelerator is 100:5:2:2:1.5:2:1.

优选地,橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺和促进剂的质量比为100:5:2:2:1.5:2:1

Preferably,the rubber is a nitrile rubber or a hydrogenated nitrile rubber.

优选地,所述橡胶为丁腈橡胶或氢化丁腈橡胶。

Preferably,the antioxidant is N,N-dibutyldithiocarbamate(NBC),2,2,4-trimethyl-1,2-dihydroquinoline polymer(RD),N One or more of isopropyl-N'-phenyl-p-phenylenediamine(4010NA).

优选抗氧剂为nn-二丁基二硫代氨基甲酸酯(NBC)2,2,4-三甲基-1,2-二氢喹啉聚合物(RD)n一或多个异丙基-n'-苯基-对苯二胺(4010NA)

Preferably,the flow aid is a particulate fatty acid,a particulate fatty acid derivative or granular isonicate pentaerythritol.

优选地,所述流动助剂为颗粒状脂肪酸、颗粒状脂肪酸衍生物或颗粒状季戊四醇。

Preferably,the promoter is N-cyclohexyl-2-benzothiazole sulfenamide(CZ)or 2-thiol benzothiazole(MBT).

优选促进剂为n-环己基-2-苯并噻唑磺酰胺(CZ)2-噻醇苯并噻唑(MBT)

Preferably,the plasticizer is one or more of dibutyl phthalate,dioctyl phthalate,and diethyl phthalate.

最好是一种或多种邻苯二甲酸二丁酯、邻苯二甲酸二辛酯和邻苯二甲酸二乙酯。

The preparation method of the low surface density and high tensile strength microporous absorbing material comprises the following steps:

本发明的低表面密度高拉伸强度微孔吸波材料的制备方法包括以下步骤:

(1)After mixing rubber,zinc oxide,stearic acid,antioxidant,flow aid,sulfur,accelerator,foaming agent,plasticizer and absorbent,the mixture is uniformly mixed to obtain a mixture;(2)The mixture obtained in the step(1)is kneaded to obtain a uniformly stable raw material;(3)Te uniformly stable raw material obtained in the step(2)is vulcanized at 150-160°C and foamed at the same time for 25-35 min to obtain a microporous absorbing material having a low areal density and a high tensile strength.

(1)将橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺、促进剂、发泡剂、增塑剂、吸收剂等混合后,均匀混合,得到混合物;(2)将步骤(1)得到的混合物进行捏合,得到均匀稳定的原料;(3)将步骤(2)得到的Te均匀稳定的原料在150-160c硫化,同时发泡25-35min,得到面密度低、抗拉强度高的微孔吸收材料。

Preferably,in the step(1),the kneading is carried out in an internal mixer at 85°C for 10-15 min,and in the step(2),the kneading is carried out in the open mill for 20 or more times..

优选地,在步骤(1)中,捏合在85°c的密炼机中进行10-15分钟,在步骤(2)中,捏合在开式磨机中进行20次或更多次。.

The beneficial effects of the invention:

本发明的有益效果:

(1)The invention adopts the micron-scale conductive carbon black as the absorbent,so that the material has excellent absorbing property and has low surface density,and provides a certain reinforcing effect to the material,further increases the mechanical properties of the material;and adopts and vulcanizes The foaming agent in the same temperature interval causes the material to be vulcanized while being vulcanized in the preparation process,thereby ensuring uniform distribution of cells and having a closed cell structure,thereby realizing low density and high strength of the material;(2)The microporous absorbing material prepared by the invention has a total thickness of between 1.4 and 2.0 mm,and an areal density of less than 1.7 kg/m<2>.The material has good absorbing properties in a specific wavelength band and has good temperature resistance.And mechanical properties,temperature resistance can reach 150°C,the average tensile strength is greater than 8.5 MPa,the minimum elongation at break is 360%;(3)The preparation method of the invention foams at the same time as the material is vulcanized,which not only ensures the structure of the microwave material,but also is simple,easy and low in cost,and is advantageous for mass production.

(1)采用微米级导电炭黑作为吸附剂,使材料具有优良的吸附性能和低的表面密度,对材料具有一定的增强作用,进一步提高材料的机械性能;采用并硫化相同温度间隔的发泡剂,使材料在制备过程中硫化,从而保证了单元的均匀分布和封闭的单元结构,实现了材料的低密度和高强度;(2)由本发明制备的微米级吸附材料总厚度在1.42.0mm之间,孔密度小于1.7kg/m2。该材料在特定波段具有良好的吸波性能,并具有良好的耐温性。力学性能、耐温性能可达150°c,平均拉伸强度大于8.5MPa,最小断裂伸长率为360%;(3)发明泡沫塑料的制备方法与材料硫化同时进行,既保证了微波材料的结构,又简单易行,成本低,有利于批量生产。

DRAWINGS

图则

1 is a graph showing a flat plate reflectance test of a microporous absorbing material prepared in Example 1-3 of the present invention;2,(a)is an optical microscope image of a cross section of a microporous absorbing material prepared in Example 1 of the present invention;(b)is an optical microscope imaging of a cross section of a microporous absorbing material prepared in Example 2 of the present invention;Figure.

1是本发明例1-3中制备的微孔吸收材料的平板反射测试图;2(a)是本发明例1中制备的微孔吸收材料横截面的光学显微镜图像;(b)是本发明例2中制备的微孔吸收材料横截面的光学显微镜图像;图。

Detailed ways

详细的方法

For a better understanding of the present invention,the preferred embodiments of the present invention are described in the accompanying drawings.

为了更好地理解本发明,在附图中描述了本发明的优选实施例。

The low surface density high tensile strength microporous absorbing material comprises 100 parts by weight of rubber,5 parts by weight of zinc oxide,2 parts by weight of stearic acid,2 parts by weight of an antioxidant,1.5 parts by weight of a flow aid,2 parts by weight of sulfur,1 part by weight of a promoter,5-18 parts by weight of a foaming agent,15-25 parts by weight of a plasticizer and an absorbent;wherein the rubber is a nitrile rubber 220 or a hydrogenated nitrile rubber;The antioxidant is N,N-dibutyldithiocarbamate,2,2,4-trimethyl-1,2-dihydroquinoline polymer,N-isopropyl-N'-phenyl pair One or more of phenylenediamine;the flow aid is a granular fatty acid,a granulated fatty acid derivative or granulated isonicate stearic acid,preferably a particulate fatty acid derivative ZC-56 or a granulated stearic acid Pentaerythritol D-821;accelerator is N-cyclohexyl-2-benzothiazole sulfenamide or 2-thiol benzothiazole;plasticizer is dibutyl phthalate,phthalic acid One or more of octyl ester and diethyl phthalate;the blowing agent is azodicarbonamide,modified azodicarbonamide or N,N'-dimethylpentamethyltetramine Absorbent is micron Conductive carbon black,the mass of which is 30-40%,preferably 5-18%of the total mass of rubber,zinc oxide,stearic acid,antioxidant,flow aid,sulfur,accelerator,foaming agent and plasticizer It is well known in the art that the default blowing agent has no residual calculation after forming the final product).

所述的低表面密度高拉伸强度微孔吸波材料由橡胶重量100份、氧化锌重量5份、硬脂酸重量2份、抗氧剂重量2份、助流剂重量1.5份、硫磺重量2份、促进剂重量1份、发泡剂重量5-18份、增塑剂和吸收剂重量15-25份组成;其中橡胶为丁腈橡胶220或氢化丁腈橡胶,抗氧剂为nn-二丁基二硫代氨基甲酸酯,2,2,4-三甲基-1,2-二氢喹啉聚合物,n-异丙基-n'-苯基对一个或多个苯二胺;助流剂为颗粒状脂肪酸、颗粒状脂肪酸衍生物或颗粒状异硅酸,最好是颗粒状脂肪酸衍生物ZC-56或颗粒状硬脂酸季戊四醇D-821;促进剂为n-环己基-2-苯并噻唑磺酰胺或2-硫醇苯并噻唑;增塑剂为邻苯二甲酸二丁酯、邻苯二甲酸一个或更多的辛酯和邻苯二甲酸二乙酯;发泡剂为偶氮甲酰胺、改性偶氮甲酰胺或nn'-二甲基五甲基四胺吸收剂为微米导电炭黑,其质量为30-40%,最好占橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺、促进剂、发泡剂和增塑剂总质量的5-18%

The preparation method of the low-density high tensile strength microporous absorbing material comprises the following steps:

本发明的低密度高拉伸强度微孔吸波材料的制备方法包括以下步骤:

(1)The rubber,the zinc oxide,the stearic acid,the antioxidant,the flow aid,the sulfur,the accelerator,the foaming agent,the plasticizer and the absorbent are physically stirred uniformly,and then uniformly mixed and mixed in an internal mixer to obtain a mixture;

(1)将橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺、促进剂、发泡剂、增塑剂、吸收剂等物理搅拌均匀,然后在密炼机中混合均匀,得到混合物;

The mass ratio of the rubber,zinc oxide,stearic acid,antioxidant,flow aid,sulfur,accelerator,foaming agent and plasticizer is 100:5:2:2:1.5:2:1:(5-18):(15-25),the blowing agent is azodicarbonamide,modified azodicarbonamide or N,N'-dimethylpentamethyltetramine,and the absorbent is Micron-scale conductive carbon black,the mass of which is 30-40%,preferably 5-18,of the total mass of rubber,zinc oxide,stearic acid,antioxidant,flow aid,sulfur,accelerator,foaming agent and plasticizer%(according to the field,the default blowing agent has no residual calculation after forming the final product);(2)The mixture obtained in the step(1)is added to an open mill,and is opened by a process of wrapping rolls to obtain a uniformly stable raw material;(3)The uniform and stable raw material obtained in the step(2)is added into the mold,the mold is placed in a flat vulcanizing machine,vulcanized at 150-160°C and foamed at the same time for 25-35 min,and the excess edge material is cut off to obtain a low surface density.Tensile strength microporous absorbing material.

橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺、促进剂、发泡剂、增塑剂的质量比为100:5:2:1.5:2:1:1:(5-18):(15-25),发泡剂为偶氮甲酰胺、改性偶氮甲酰胺或nn'-二甲基五甲基四胺,吸收剂为微米级导电炭黑,其质量为橡胶、氧化锌、硬脂酸、抗氧剂、助流剂、硫磺、促进剂、发泡剂和增塑剂总质量的30-40%,最好为5-18%(根据现场情况,默认发泡剂形成最终产品后无残留计算);(2)将步骤(1)中得到的混合物加入到开式磨机中,通过包裹辊的方法打开,得到均匀稳定的原料;(3)在模具中加入步骤(2)所得到的均匀、稳定的原料,将模具置于平板硫化机中,在150-160°c温度下硫化,同时发泡25-35分钟,去掉多余的边缘材料,获得较低的表面密度。拉伸强度微孔吸波材料。

In the present invention,the rubber is a nitrile rubber 220 or a hydrogenated nitrile rubber,and the antioxidant is N,N-dibutyldithiocarbamate,2,2,4-trimethyl-1,2-dihydroquine.One or more of porphyrin polymer,N-isopropyl-N'-phenyl-p-phenylenediamine,flow aid is granular fatty acid,granular fatty acid derivative ZC-56 or granular isostearic acid Tetraol D-821,preferably granular fatty acid derivative ZC-56 or granular stearic acid isovaltol D-821,the accelerator is N-cyclohexyl-2-benzothiazole sulfenamide or 2-thiol The benzothiazole,the plasticizer is one or more of dibutyl phthalate,dioctyl phthalate,and diethyl phthalate.

本发明所述橡胶为丁腈橡胶220或氢化丁腈橡胶,其抗氧剂为nn-二丁基二硫代氨基甲酸酯,2,2,4-三甲基-1,2-二氢喹啉。一种或多种卟啉聚合物,n-异丙基-n'-苯基-对苯二胺,流动助剂为颗粒状脂肪酸,颗粒状脂肪酸衍生物ZC-56或颗粒状异硬脂酸四醇D-821,优选颗粒状脂肪酸衍生物ZC-56或颗粒状硬脂酸异戊醇D-821,促进剂为n-环己基-2-苯并噻唑亚砜或2-硫醇苯并噻唑,增塑剂为一种或多种邻苯二甲酸二丁酯,邻苯二甲酸二辛酯和邻苯二甲酸二乙酯。

In the step(1)of the present invention,the order of adding rubber,zinc oxide,stearic acid,anti-aging agent,flow aid,sulfur,accelerator,foaming agent,plasticizer and absorbent has certain requirements,according to the field personnel It is well known that sulfur and accelerators are added at the end in order to prevent premature vulcanization from excessive temperature.

在本发明的第(1)步骤中,按照添加橡胶、氧化锌、硬脂酸、抗老化剂、助流剂、硫磺、促进剂、发泡剂、增塑剂和吸收剂的顺序有一定的要求,据现场人员了解,最后添加硫磺和促进剂是为了防止过高的温度造成过早硫化。

In the step(1)of the present invention,in order to prevent the active ingredient from being destroyed at a high temperature,the temperature of the mixing process is preferably controlled within 85°C.

在本发明的步骤(1)中,为了防止原料药在高温下被破坏,混合过程的温度最好控制在85°c以内。

In the step(2)of the present invention,the rubber opening process is not uniform enough to be fully smelted according to the conventional three-pack two-rolling process of the rubber mixing process.Therefore,it is preferred to use a method of 20 or more times of kneading..

在本发明的步骤(2)中,橡胶开口工艺不够均匀,不能按照橡胶混炼工艺的传统三包二辊工艺进行充分熔炼。因此,最好使用20次或更多次的揉捏方法。.

The types of internal mixers and open mills used in the present invention are selected in accordance with the amount of the absorbing material to be prepared.

根据要制备的吸收材料的数量选择本发明中使用的内部混合器和开式磨机的类型。

The die vulcanizer used in the present invention has a die size of 200×200 mm<2>or 300×300<2>mm,more preferably 300×300<2>mm,and the cavity height can be adjusted,and is between 1.0 and 2.0 mm according to requirements.Variety.

本发明所用的模具硫化机模具尺寸为200200mm23003002mm,最好为3003002mm,可调节模腔高度,根据要求在1.02.0mm之间。多样性。

The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

本发明将参照实施例和附图在下面进一步详细描述。

Example 1

例子一

100 g of nitrile rubber 220,5 g of zinc oxide,2 g of stearic acid,2 g of N,N-dibutyldithiocarbamate,1.5 g of granular fatty acid,2 g of sulfur,1 g of N-cyclohexyl-2-benzothiazole Sulfonamide,5 g of azodicarbonamide,15 g of dibutyl phthalate and 40.5 g of micron-sized conductive carbon black are added to the internal mixer at 85°C to be uniformly mixed to obtain a mixture;the mixture obtained by the mixing is moved Open to the open mill to obtain a uniform and stable raw material,and then cut 62.0g of raw material into a suitable size into a mold of 200×200<2>mm,the cavity height of 1.2mm,150°C in the flat vulcanizing machine The vulcanization foaming was carried out for 25 min to obtain a microporous absorbing material,and the mechanical properties of the material are shown in Table 1.

100g丁腈橡胶220,5G氧化锌,2g硬脂酸,2gnn-二丁基二硫代氨基甲酸酯,1.5G颗粒状脂肪酸,2g硫磺,1gn-环己基-2-苯并噻唑磺酰胺,5G偶氮甲酰胺,15G邻苯二甲酸二丁酯和40.5G微米级导电炭黑加入到85°c的密炼机中,均匀混合成混合物;在平板硫化机中,将混合后得到的混合物开口移动到开口机中,得到均匀稳定的原料,然后将62.0g原料切成适当的粒度,制成2002002mm的模具,型腔高度为1.2mm,温度为150°c。硫化发泡25min,得到微孔吸收材料,材料的力学性能如表1所示。

Example 2

例子二

100 g of nitrile rubber 220,5 g of zinc oxide,2 g of stearic acid,2 g of 2,2,4-trimethyl-1,2-dihydroquinoline polymer,1.5 g of granular fatty acid derivative ZC-56,2 g of sulfur 1g2-thiol benzothiazole,10g modified azodicarbonamide,20g dioctyl phthalate and 50.225G micron conductive carbon black are added to the internal mixer and mixed uniformly to obtain a mixture;The obtained mixture was transferred to an open mill to obtain a uniform and stable raw material,and then 65.0 g of the raw material was cut into a suitable size and placed in a mold of 200×200<2>mm,and the cavity height was 1.5 mm at 155°C.After vulcanization and foaming in a flat vulcanizing machine for 30 min,a microporous absorbing material was obtained,and the mechanical properties of the material are shown in Table 1.

100g丁腈橡胶220,5G氧化锌,2g硬脂酸,2g2,2,4-三甲基-1,2-二氢喹啉聚合物,1.5G颗粒状脂肪酸衍生物ZC-56,2g1g2-巯基苯并噻唑,10g改性偶氮甲酰胺,20g邻苯二甲酸二辛酯和50.225G碳黑加入密炼机中,均匀混合得到导电混合物;将得到的混合料转移到开式磨机上,获得均匀稳定的原料,然后将65.0g的原料切成适当的粒度,放入2002002mm的模具中,在155°c时,型腔高度为1.5mm。在平板硫化机上硫化发泡30分钟后,得到了微孔吸波材料,其力学性能如表1所示。

Example 3

例子3

100 g of hydrogenated nitrile rubber,5 g of zinc oxide,2 g of stearic acid,1 g of N-isopropyl-N'-phenyl-p-phenylenediamine,1 g of nickel N,N-dibutyldithiocarbamate,1.5 g of granules Isobaric acid D-821,2g sulfur,1g 2-thiol benzothiazole,15G N,N'-dimethyl pentamethyltetramine,20g dioctyl phthalate,3g phthalic acid Diethyl dicarboxylate and 50.3275 g of micron-sized conductive carbon black were mixed and mixed uniformly in an internal mixer to obtain a mixture;the mixture obtained by the kneading was transferred to an open mill to obtain a uniform and stable raw material,and then the 71.0 raw material was cut.The mold was placed in a 200×200<2>mm mold with a height of 1.7 mm,and vulcanized and foamed in a flat vulcanizer for 35 minutes at 155°C to obtain a microporous absorbing material.

100g氢化丁腈橡胶、5G氧化锌、2g硬脂酸、1gn-异丙基-n'-苯基对苯二胺、1g镍、n-二丁基二硫代氨基甲酸酯、1.5G异龙酸D-8212g硫、1g2-硫醇苯并噻唑、15Gnn'-五甲基胺、20g邻苯二甲酸二辛酯、3g微米邻苯二甲酸二乙酯和50.3275G导电炭黑混合,制成混合物;将捏合得到的混合物转移到开磨机上,获得均匀稳定的原料,然后对71.0原料进行切割。该模具放置在一个2002002毫米模具的高度为1.7毫米,并硫化和泡沫在一个平板硫化35分钟,在155c获得微孔吸收材料。

The microporous absorbing material of Example 1-2 was fabricated into a dumbbell sample having a width of 6 mm and an effective distance of 25 mm.

将样品1-2的微孔吸波材料制成宽度为6mm、有效距离为25mm的哑铃型吸波材料。

The mechanical performance testing equipment is the SUNS electronic universal testing machine of Shenzhen Sansi Vertical and Horizontal Technology Co.,Ltd.,and the GB/T528-1998 vulcanized rubber stretching method is tested.

机械性能测试设备是深圳三思立卧科技有限公司的SUNS电子万能试验机,测试了gb/t528-1998硫化橡胶拉伸法。

The test results are shown in Table 1.

测试结果载于表1

Table 1 Mechanical properties of the microporous absorbing materials of Example 1 and Example 2

1示例1和示例2的微孔吸收材料的机械性能

[image]

[图片]

The microporous absorbing material obtained in Example 1-3 was cut into a standard sample of 180×180 mm<2>,and the material RCS test equipment was N-5244A of Agilent vector network analyzer PNA-X series,and the test method was arcuate.The method is tested for the 8-12 GHz band.

1-3中获得的微孔吸收材料被切割成180180mm2的标准样品,材料RCS测试设备为N-5244AAgilent矢量电路网络分析仪PNA-X系列,测试方法为弓形。该方法在8-12ghz频段进行了测试。

The test results are shown in Figure 1.The material was cut into longitudinal sections to obtain a horizontal section,and the cross-sectional structure was taken by an electron microscope to obtain the foaming size and foaming distribution.The test results are shown in Figure 2.

测试结果如图1所示。材料被切割成纵向部分以获得水平部分,横向部分结构由一个电子显微镜来获得发泡尺寸和发泡分布。测试结果如图2所示。

Curve(a)in Fig.1 is the plate reflectance of the microporous absorbing material of Example 1,and as can be seen from the curve(a),the absorption of the material in the range of 8-12 GHz is lower than-6 dB,and the peak value can be reached-The curve(b)in Fig.1 is the plate reflectance of the microporous absorbing material of Example 2.As can be seen from the curve(b),the absorption of the material in the range of 8-12 GHz is lower than-7 dB,and the peak value is It can reach below-25dB;curve(c)in Figure 1 is the plate reflectivity of the microporous absorbing material of Example 3,as can be seen from curve(c),the material absorption in the 8-12 GHz band is lower than-7.5dB,the peak can reach below-25dB.

1中的曲线(a)是示例1中微孔吸波材料的平板反射率,从曲线(a)可以看出,材料在8-12ghz范围内的吸收低于-6db,达到峰值——1中的曲线(b)是示例2中微孔吸波材料的反射率平板。从曲线(b)可以看出,材料在8-12ghz范围内的吸收低于-7db,峰值低于-25db;1中的曲线(c)是例3的微孔吸收材料的平板反射率,从曲线(c)可以看出,材料在8-12ghz范围内的吸收低于-7.5dB,峰值低于-25db

2(a)is a cross-sectional optical microscope image of the microporous absorbing material of Example 1.It can be seen from the figure that the material foam distribution is relatively uniform,and the diameter of the closed cell is about 100µm;FIG.2(b)For the cross-sectional optical microscopy image of the microporous absorbing material of Example 2,it can be seen from the figure that the foamed closed pore diameter of the microwave material is mostly 100 micrometers,and the maximum value is more than 200 micrometers.

2(a)是示例1的微孔吸收材料的横截面光学显微镜图像。从图中可以看出,材料的泡沫分布相对均匀,闭孔直径约为100;2(b)对于例2的微孔吸收材料的横截面光学显微图,从图中可以看出,微波材料的泡沫闭孔直径大多为100微米,最大值大于200微米。

It will be apparent that the description of the above embodiments is merely to assist in understanding the method of the present invention and its core idea.It should be noted that those skilled in the art can also make several improvements and modifications to the present invention without departing from the principles of the present invention.These modifications and modifications are also within the scope of the claims of the present invention..

显然,对上述实施例的描述仅仅是为了帮助理解本发明的方法及其核心思想。值得注意的是,本领域的技术人员也可以对本发明进行若干改进和修改,而不背离本发明的原理。这些修改和修改也属于本发明权利要求的范围。.

微波吸收/屏蔽材料 – 专利

POLYMER COMPOSITION FOR ABSORBING HIGH-FREQUENCY ENERGY

吸收高频能量的聚合物组合物

RU2012111336

Ru201211336

FIELD:chemistry.SUBSTANCE:invention relates to radioelectronic engineering,particularly to producing polymer compositions for absorbing high-frequency energy in microwave devices,e.g.in amplifiers of compensation channels of radar stations.The polymer composition for absorbing high-frequency energy contains a polymer-low-molecular weight dimethylsiloxane synthetic rubber SKTN,a cold curing catalyst No68 and absorbent filler-pigment aluminium powder.EFFECT:invention provides improved absorption properties with low thickness of the absorbent layer in a wide temperature range and high humidity.

领域:化学。物质:发明涉及放射电子工程,特别是生产用于吸收微波设备中的高频能量的聚合物组合物,例如雷达站补偿通道的放大器。吸收高频能量的聚合物组合物含有聚合物-低分子量二甲基硅氧烷合成橡胶SKTN、冷固化催化剂No68和吸收剂填料-铝粉。效果:本发明在宽温度范围和高湿度下,吸收层厚度较小,吸收性能得到改善。

The invention relates to electronic equipment,in particular the production of polymer compositions intended to absorb high-frequency energy in microwave devices,for example,in amplifiers of compensation channels of radar stations.

本发明涉及电子设备,特别是用于吸收微波器件中的高频能量的聚合物组合物的生产,例如在雷达站补偿通道的放大器中。

Known polymer composition for the absorption of high-frequency energy[RF patent 2294347 C1,published 27.02.2007],including synthetic low molecular weight rubber dimethylsiloxane SKTN,absorbing filler powder alsifer fraction not more than 63 microns and the catalyst for cold hardening No.68,with the following ratio of components,wt.h..:

已知用于吸收高频能量的聚合物组成[RF专利2294347C1,2007227日出版],包括合成低分子量橡胶二甲基硅氧烷SKTN,吸收填料粉末alsifer馏分不大于63微米和用于冷硬化68号的催化剂,按以下组成比例,wt.h.:

Synthetic low-molecular rubber dimethylsiloxane SKTN 15-25 Powder alsifer fraction not exceeding 63 microns 75-85 Cold-curing catalyst?68 0.6-one,0

合成低分子橡胶二甲基硅氧烷SKTN15-25粉状石蜡分数不超过63微米75-85冷固化催化剂?680.6-1,0

The disadvantage of this composition is the complex manufacturing technology of alsifer powder and low absorbing properties with a small thickness of the absorbing layer.

该组合物的缺点是制备工艺复杂,吸波层厚度小,吸波性能低。

The closest in technical essence to the proposed polymer composition for absorbing high-frequency radiation is[RF Patent 2349615 C1,published March 20,2009]a polymer composition for absorbing high-frequency energy,containing synthetic rubber of low molecular weight dimethylsiloxane SKTN,cold curing catalyst No.68,and absorbing iron filler carbonyl radio engineering,in the following ratio of components,parts by weight:

在技术本质上最接近建议的用于吸收高频辐射的聚合物组合物是[RF专利2349615C1,2009320日出版]一种用于吸收高频能量的聚合物组合物,包括低分子量二甲基硅氧烷SKTN的合成橡胶、68号冷固化催化剂和吸铁填充剂羰基放射性工程,按以下组分、部分重量的比例计算:

Synthetic low-molecular rubber dimethylsiloxane SKTN 15-25 Radio-carbonyl iron of the mark?-10 78-83 Cold-curing catalyst?68 0.6-one,0

合成低分子橡胶二甲基硅氧烷SKTN15-25放射性羰基铁的标记?-1078-83冷固化催化剂?680.6-1,0

The disadvantage of the prototype is the high density and low absorption properties with a small thickness of the absorbing layer.

该样机的缺点是密度高、吸收性能差,而吸收层厚度很小。

The technical result of the invention is to obtain a polymer composition with high absorbing properties with a small thickness of the applied absorbing layer in a wide range of temperatures and high humidity,which is important for onboard equipment of aircraft.

本发明的技术成果是在宽温度和高湿度范围内获得具有小厚度应用吸收层的高吸收性能的聚合物组合物,该聚合物组合物对飞机机载设备至关重要。

The essence of the invention is that the proposed polymer composition for absorbing high-frequency energy contains polymer-synthetic rubber of low molecular weight dimethylsiloxane SKTN(TU 2294-002-00152000-96)and cold-curing catalyst?68(OST 38.03239-81),as well as absorbing filler.

本发明的实质是所提出的吸收高频能量的聚合物组合物含有低分子量二甲基硅氧烷SKTN(TU2294-002-00152000-96)的聚合物合成橡胶和冷固化催化剂?68(OST38.03239-81),以及吸收填料。

New in the proposed solution is that the polymer composition to absorb high-frequency energy as an absorbing filler contains aluminum pigment powder(GOST 5494-71)in the following ratio of components,parts by weight:

新提出的解决方案是,聚合物组成吸收高频能量作为吸收填料含有铝颜料粉(GOST5494-71)在以下比例的组分,部分重量:

Synthetic low molecular rubber dimethylsiloxane SKTN(TU 2294-002-00152000-96)15-25 Cold-cured Catalyst No.68(OST 38.03239-81)0.5-1.2 Aluminum pigment powder(GOST 5494-71)12-20

合成低分子橡胶二甲基硅氧烷SKTN(TU2294-002-00152000-96)15-25号冷固化68号催化剂(OST38.03239-81)0.5-1.2铝粉(GOST5494-71)12-20

The polymer composition for absorbing high-frequency energy is made by simply mixing the components and curing them at room temperature.

用于吸收高频能量的聚合物组合物是通过简单地将组分混合并在室温下固化而制成的。

Table 1 shows the compositions of the proposed composition for the absorption of high-frequency energy.

1显示了吸收高频能量的拟议组合物的成分。

Table 1 PPN Components Example 1 Example 2 Example 3 1 Low molecular weight synthetic rubber 15 20 25 dimethylsiloxane SKTN 2 Cold-cured catalyst?68 0.5 0.85 1.2<tb>3 Aluminum pigment powder 12 16 20

1PPN组分示例1示例2示例31低分子量合成橡胶152025二甲硅氧烷SKTN2冷固化催化剂?680.50.851.2tb3铝颜料粉121620

The specified range of components is chosen due to the fact that with a decrease in the amount of aluminum powder the required efficiency of microwave energy absorption is not achieved,and with an increase,the composition is non-technological(viscous,non-uniform)and cannot be applied with a thin layer.

由于铝粉用量减少,微波能量吸收效率不能达到要求,而且随着用量的增加,组合物是非工艺性的(粘性的,不均匀的),不能用薄层涂敷,因此选择了规定的组分范围。

With an increase in the number of catalyst for cold curing?68 reduces the viability of the composition,while due to the rapid increase in viscosity it is impossible to obtain a thin homogeneous film of the composition.

用增加的催化剂进行冷固化?68降低了成分的生存能力,而由于粘度的迅速增加,不可能获得成分均匀的薄膜。

When reducing the amount of catalyst for cold curing?68 does not completely cure the absorbent composition.

何时减少冷固化催化剂的用量?68不能完全固化吸收性成分。

Table 2 shows the results of comparative tests of the analogue and the claimed polymer composition for absorbing high-frequency energy deposited on the microwave signal amplifier.

2显示了沉积在微波信号放大器上的吸收高频能量的模拟物和声称的聚合物组成的比较试验结果。

Table 2 No.of paragraphs Indicators Prototype(patent 2349615)Example 1 Example 2 Example 3 1 Microwave signal attenuation in the range frequencies 8-12 GHz,dB:-at a temperature of+25°C 5 13 15 18<tb>-at-60°C 5 18 16 17-at+200°C 3 13<SEP>15 14 After exposure to high humidity 4 14 13 15 98%at a temperature of+40°C for 12 days 2 Density,g/cm<3>4,45 1.55 1.60 1.52 3 The thickness applied 1.0 0.45 0.50 0.60 absorbing of coverage 4 Weight loss no<SEP>>5 times<SEP>>5 times<SEP>>5 times

表二编号。指示器原型(专利2349615)例子2例子31微波信号在频率范围内衰减8-12ghzdB:-在温度+25c5131518tb-at-60c5181617-at+200c313sep1514暴露于高湿度环境下122密度+40c14131598%G/cm34,451.551.601.523厚度施加1.00.450.500.60吸收覆盖度4减肥0.5sep5sep5

As can be seen from the data presented in table 2,the proposed polymer composition for absorbing high-frequency energy has several advantages:

从表2中提供的数据可以看出,用于吸收高频能量的拟议聚合物组合物有以下几个优点:

-the efficiency of the absorption of microwave energy with a small thickness of the absorbing layer("13-18 dB"against"5 dB"with a thickness of less than 1 mm);-radio-technical characteristics are preserved in a wide range of temperatures(from-60°C to 200°C)and exposure to high humidity;-lower density("1.5-1.6 g/cm<3>"against"4.45 g/cm<3>"),which is important for the onboard equipment of the aircraft.

-吸收层厚度不大(13-18db)吸收微波能量的效率(13-18db)相对于厚度少于1mm的吸收层厚度(5db);-无线电技术特性在温度范围很大(-60°c200°c)和高湿度环境下得以保留;-密度较低("1.5-1.6g/cm3")相对于"4.45G/cm3",这对飞机的机载设备非常重要。

-weight reduction of the proposed composition in comparison with the prototype more than 5 times

-拟议组合物的重量比原型减少5倍以上

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