环氧树脂基碳纳米复合电磁屏蔽材料研究

李克训; 马江将; 张泽奎; 马晨; 贾琨; 刘伟; 张捷; 李静; 王东红

doi:10.11884/HPLPB201931.190102

环氧树脂基碳纳米复合电磁屏蔽材料研究

doi: 10.11884/HPLPB201931.190102

李克训^{1, 2,},
马江将^{1, 2},
张泽奎^{1, 2},
马晨^{1, 2},
贾琨^{1, 2},
刘伟^{1, 2},
张捷^{1, 2},
李静^{1, 2},
王东红^{1, 2}

1.
中国电子科技网络信息安全有限公司, 成都 610041
2.
中国电子科技集团公司第三十三研究所电磁防护材料及技术山西省重点实验室, 太原 030032

基金项目:

装备预研领域基金项目 61409220114

四川省军民技术再研发项目 zyf-2017-70

山西省自然科学基金项目 201701D121050

详细信息

作者简介:
李克训(1984-)，男，高级工程师，主要从事电磁防护材料及技术研究；likexuncc@126.com

中图分类号: TQ172; TU528
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- 被引次数: 0
出版历程
- 收稿日期: 2019-04-09
- 修回日期: 2019-05-16
- 刊出日期: 2019-10-15

Study on epoxy resin-based carbon nanocomposite for electromagnetic shielding

Li Kexun^{1, 2
,},
Ma Jiangjiang^{1, 2},
Zhang Zekui^{1, 2},
Ma Chen^{1, 2},
Jia Kun^{1, 2},
Liu Wei^{1, 2},
Zhang Jie^{1, 2},
Li Jing^{1, 2},
Wang Donghong^{1, 2}

1.
China Electronic Technology Cyber Information Security Co, Ltd, Chengdu 610041, China
2.
33rd Institute of China Electronics Technology Group Corporation, Shanxi Key Laboratory of Electromagnetic Protection Material and Technology, Taiyuan 030032, China

摘要

摘要: 基于碳纳米材料有序结构优异的结构与功能特点，研究了其在新型电磁防护材料中的应用，结合环氧树脂与碳纳米有序结构在电磁屏蔽效能和力学性能方面表现出的显著优势，论述了环氧树脂基碳纳米管复合电磁屏蔽材料和碳纳米管有序纳米结构研究，通过电磁仿真优化设计构筑三维导电网络结构，得出8~12 GHz电磁波段屏蔽效能≥82.96 dB的理想结构模型，为环氧树脂基碳纳米复合电磁屏蔽材料研究开发提供了指导，有利于该新型电磁屏蔽材料在国防、国民经济各领域的应用。
- 碳纳米管 /
- 环氧树脂 /
- 电磁屏蔽 /
- 理想模型 /
- 有序结构
Abstract: The epoxy resin is widely applied in the fields of national defense and economy because of its high bonding strength to the metallic and non-metallic surface after solidification. The carbon nanomaterials, especially the ordered structures of carbon nanomaterial with excellent structure and performance, are widely used in the research of new electromagnetic protection material. The combination of epoxy resin and the ordered structure carbon nanomaterials shows obvious advantage in the aspects of electromagnetic shielding effectiveness and mechanical property. On the basis of the epoxy resin/carbon nanotube electromagnetic shielding composite materials and the ordered carbon nanotube structures' researches, the ideal structure model with electromagnetic shielding property ≥82.96 dB in the range of 8-12 GHz is obtained through optimal design of electromagnetic simulation and structure fabrication of electrical conductivity three-dimensional network. This investigation provides guidance for researching electromagnetic shielding composite based on epoxy resin and carbon nanomaterials.
- carbon nanotube /
- epoxy resin /
- electromagnetic shield /
- ideal model /
- ordered structure

HTML全文

图 1 原位法制备碳纳米管有序纳米结构

Figure 1. In-situ preparation of ordered nanostructures of carbon nanotubes

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图 2 非原位法制备碳纳米管有序纳米结构(电场、磁场和力场)

Figure 2. Ex situ preparation of ordered nanostructures of carbon nanotubes(electric, magnetic and force fields)

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图 3 碳纳米管及其有序纳米结构

Figure 3. Carbon nanotubes and their ordered nanostructures

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图 4 环氧树脂基电磁屏蔽材料屏蔽效能仿真分析图

Figure 4. Simulation diagram of shielding effectiveness (SE) of epoxy resin-based electromagnetic shielding materials

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图 5 碳纳米管理想结构模型

Figure 5. Ideal structural model of carbonnanotubes

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图 6 环氧树脂基电磁屏蔽材料理想结构模型

Figure 6. Ideal structural model of epoxy resin-based electromagnetic shielding materials

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表 1 环氧树脂基体中掺杂碳纳米管渗透阈值及导电性

Table 1. Permeation threshold and conductivity of doped carbon nanotubes in epoxy resin matrix

No	CNT types	dispersivity	length-diameter ratio	percolation threshold/%	σ_max/(S·m^-1)
1	MWCNT/CVD	non-entangled	200	0.0021	1×10^-3/0.01%
2	MWCNT/CVD	non-entangled	340	0.0025	2×10⁰/1%
3	MWCNT/CVD	non-entangled	1000	0.0025	4×10^-1/0.5%
4	SWCNT/Laser method	entangled	400	0.01	5×10^-3/0.4%
5	MWCNT/CVD	entangled	1000	0.024	3×10^-1/1%
6	MWCNT/CVD	entangled	100	0.03	5×10^-1/0.15%
7	SWCNT/CVD	/	1000	0.04	1×10^-3/0.4%
8	SWCNT/Arc method	entangled	5000	0.074	1×10^-3/0.2%
9	DWCNT/CVD	entangled	1000	0.15	1×10^-2/0.6%
10	MWCNT/CVD	entangled	100	0.6	5×10^-3/10%
11	SWCNT/ Arc method	entangled	1000	0.6	1×10^-2/14%
12	MWCNT/CVD	/	＞500	0.7	5×10⁰/4%
13	MWCNT/CVD	entangled	80	1.5	1×10^-3/3%
14	MWCNT/ Arc method	entangled	100	4	1×10^-3/16%
15	MWCNT/CVD	/	＞20	5	2×10^-5/20%
16	MWCNT/CVD	/	20	5	1×10^-5/8%

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表 2 环氧树脂基电磁屏蔽材料屏蔽效能仿真计算结果

Table 2. Simulation results of shielding effectiveness of epoxy resin-based electromagnetic shielding materials

No	electronic conductivity/(S·m^-1)	thickness/mm	square resistance/Ω	layer number	shielding effectiveness/dB
1	2	50	/	0	≥98.27
2	300	3	/	0	≥86.98
3	2	3	5/5/5	3	≥82.96
4	2	10	4/4	2	≥80.25
5	2	3	4/6/8	3	≥79.38
6	2	3	8/6/4	3	≥79.38

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