Electromagnetic interference (EMI) shielding of single-walled carbon nanotube epoxy composites

被引：1055

作者：

Li, Ning

Huang, Yi

Du, Feng

He, Xiaobo

Lin, Xiao

Gao, Hongjun

Ma, Yanfeng

Li, Feifei

Chen, Yongsheng ^{[1
]}

Eklund, Peter C.

机构：

[1] Nankai Univ, Key Lab funct Polymer Mat, Inst Polymer Chem, Coll Chem, Tianjin 300071, Peoples R China

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

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

[4] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[5] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

来源：

NANO LETTERS | 2006年 / 6卷 / 06期

关键词：

D O I：

10.1021/nl0602589

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Single-walled carbon nanotube (SWNT)-polymer composites have been fabricated to evaluate the electromagnetic interference (EMI) shielding effectiveness (SE) of SWNTs. Our results indicate that SWNTs can be used as effective lightweight EMI shielding materials. Composites with greater than 20 dB shielding efficiency were obtained easily. EMI SE was tested in the frequency range of 10 MHz to 1.5 GHz, and the highest EMI shielding efficiency (SE) was obtained for 15 wt % SWNT, reaching 49 dB at 10 MHz and exhibiting 15-20 dB in the 500 MHz to 1.5 GHz range. The EMI SE was found to correlate with the dc conductivity, and this frequency range is found to be dominated by reflection. The effects of SWNT wall defects and aspect ratio on the EMI SE were also studied.

引用

页码：1141 / 1145

页数：5

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