The influence of single-walled carbon nanotube structure on the electromagnetic interference shielding efficiency of its epoxy composites

被引：515

作者：

Huang, Yi

Li, Ning

Ma, Yanfeng

Feng, Du

Li, Feifei

He, Xiaobo

Lin, Xiao

Gao, Hongjun

Chen, Yongsheng ^{[1
]}

机构：

[1] Nankai Univ, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China

[2] Nankai Univ, Inst Polymer Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China

[3] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

CARBON | 2007年 / 45卷 / 08期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.carbon.2007.04.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three types of single-walled carbon nanotube (SWCNT) homogeneous epoxy composites with different SWCNT loadings (0.01-15%) have been evaluated for electromagnetic interference (EMI) shielding effectiveness (SE) in the X-band range (8.2-12.4 GHz). The effect of the SWCNT structure including both the SWCNT aspect ratio and wall integrity, on the EMI SE have been studied and are found to correlate well with the conductivity and percolation results for these composites. The composites show very low conductivity thresholds (e.g. 0.062%). A 20-30 dB EMI SE has been obtained in the X-band range for 15% SWCNT loading, indicating that the composites can be used as effective lightweight EMI shielding materials. Furthermore, their EMI performance to radio frequencies is found to correspond well with their permittivity data. (c) 2007 Published by Elsevier Ltd.

引用

页码：1614 / 1621

页数：8

共 31 条

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