镍粉/石墨粉/NBR复合电磁屏蔽材料的研制及性能

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作者:: 林宇霖1 ，吴惠民1 ，刘瑞来2 ，徐婕2 ，穆寄林2
Lin Yulin 1 ，Wu Huimin 1 ，Liu Ruilai 2 ，Xu Jie 2 ，Mu Jilin 2

作者单位:: 1.福州市福塑科学技术研究所有限公司，福建福州 350008；2.武夷学院生态与资源工程学院，福建武夷山 354300
1. Fuzhou Fusu Science and Technology Institute Company，Fuzhou 350008，China；2. College of Ecology and Resources Engineering，Wuyi University，Wuyishan 354300，China

关键词:: 镍粉；石墨粉；丁腈橡胶；电磁屏蔽
nickel powder；graphite powder；nitrile rubber；electromagnetic shielding

摘要:: 摘要：采用镍粉、石墨粉填充丁腈橡胶，制备了镍粉/石墨粉/NBR复合电磁屏蔽材料，对比了不

同镍粉/石墨粉比例复合电磁屏蔽橡胶的各项性能。采用扫描电子显微镜、发泡硫化仪、热常

数分析仪和矢量网络分析仪等，对材料进行测试和表征。结果表明，石墨粉可提高橡胶交联

程度，对NBR具有补强作用，表现为韧性断裂；随石墨粉用量增加，复合材料导热性能和导电

性能提高；当镍粉/石墨粉比例为1︰4时，复合材料在10.5 GHz屏蔽效能达18.7 dB。

Abstract: It used nickel powder and graphite powder to fill nitrile rubber to prepare nickel powder/graphite powder /NBR composite

electromagnetic shielding material, compared the properties of composite electromagnetic shielding rubber with different ratios of

nickel powder / graphite powder, tested and characterized the materialsby scanning electron microscope, foam vulcanization

instrument, thermal constant analyzer and vector network analyzer. The results showed that graphite powder could improve the

crosslinking degree of rubber, and had a reinforcing effect on NBR, which showed ductile fracture. With the increase of the amount

of graphite powder, the thermal conductivity and electrical conductivity of the composite were improved. When the ratio of

Ni/graphite powder was 1:4, the shielding efficiency of the composite could be up to 18.7 dB at 10.5 GHz.