Electromagnetic interference shielding mechanisms of CNT/polymer composites

被引：1347

作者：

Al-Saleh, Mohammed H. ^{[1
]}

Sundararaj, Uttandaraman ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada

来源：

CARBON | 2009年 / 47卷 / 07期

关键词：

CARBON NANOTUBE COMPOSITES; FILLED POLYMER COMPOSITES; ELECTRICAL-CONDUCTIVITY; EPOXY COMPOSITES; FREQUENCY; NANOFIBER; FILMS;

D O I：

10.1016/j.carbon.2009.02.030

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：

The electromagnetic interference (EMI) shielding mechanisms of multi-walled carbon nanotube (MWCNT)/polymer composites were analyzed experimentally and theoretically. For the experimental analysis, EMI shielding effectiveness (SE) of MWCNT/polypropylene (PP) composite plates made in three different thicknesses and at four different concentrations were studied. A model based on the shielding of electromagnetic plane wave was used to theoretically study the EMI shielding mechanisms. The experimental results showed that absorption is the major shielding mechanism and reflection is the secondary shielding mechanism. The modeling results demonstrated that multiple-reflection within MWCNT internal surfaces and between MWCNT external surfaces decrease the overall EMI SE. The EMI SE of MWCNT/PP composites increased with increase in MWCNT content and shielding plate thickness. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1738 / 1746

页数：9

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