Single-Walled Carbon Nanotube/Poly(methyl methacrylate) Composites for Electromagnetic Interference Shielding

被引：186

作者：

Das, Narayan Ch. ^{[1
]}

Liu, Yayong ^{[1
]}

Yang, Kaikun ^{[1
]}

Peng, Weiqun ^{[2
]}

Maiti, Spandan ^{[3
]}

Wang, Howard ^{[1
]}

机构：

[1] SUNY Binghamton, Dept Mech Engn, Binghamton, NY 13902 USA

[2] George Washington Univ, Dept Phys, Washington, DC 20052 USA

[3] Michigan Technol Univ, Dept Mech Engn Engn Mech, Houghton, MI 49931 USA

来源：

POLYMER ENGINEERING AND SCIENCE | 2009年 / 49卷 / 08期

基金：

美国国家科学基金会;

关键词：

ELECTRICAL-CONDUCTIVITY; MECHANICAL-PROPERTIES; NANOTUBE COMPOSITES; FILLED EVA; BLACK; POLYETHYLENE; DISPERSION; RHEOLOGY; BLENDS; EPDM;

D O I：

10.1002/pen.21384

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Single-walled carbon nanotube (SWNT)/poly(methyl methacrylate) (PMMA) composites were prepared using coagulation method. The electrical conductivity and the electromagnetic interference (EMI) shielding of SWNT/PMMA composites over the X-band (8-12 GHz) and the microwave (200-2000 MHz) frequency range have been investigated. The electrical conductivity of composites increases with SWNT loading by 13 orders of magnitude, from 10(-15) to 10(-2) Omega(-1) cm(-1) with a percolation threshold of about 3 wt% SWNTs. The effect of the sample thickness on the shielding effectiveness has been studied, and correlated to the electrical conductivity of composites. The data suggest that SWNT/PMMA composites containing higher SWNT loading (above 10 wt%) be useful for EMI shielding and those with lower SWNT loading be useful for electrostatic charge dissipation. The dominant shielding mechanism of SWNT/PMMA composites was also discussed. POLYM. ENG. SCI., 49:1627-1634, 2009. (C) 2009 Society of Plastics Engineers

引用

页码：1627 / 1634

页数：8

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