Characterization of electromagnetic shielding fabrics obtained from carbon nanotube composite coatings
Characterization of electromagnetic shielding fabrics obtained from carbon nanotube composite coatings
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DOI：
10.1016/j.synthmet.2013.10.003
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发表时间：
2014-01-01
期刊：
影响因子：
4.4
通讯作者：
Shah, Tahir
中科院分区：
文献类型：
--
作者：
Bonaldi, Renata Redondo;Siores, Elias;Shah, Tahir
本文报道了一种新型的电磁屏蔽织物，该织物是由碳纳米管、导电聚合物和金属纳米颗粒通过辊刀涂布法制备的。通过EM屏蔽和表面电阻率方法、扫描电子显微镜和BET表面积分析材料。研究了导电材料之间的协同作用、逾渗阈值、电磁屏蔽行为和理论预测。获得的涂层厚度为100-200 μ m，测试的EM范围为200-1000 MHz。获得了95-99.99%（15-40 dB）的EM屏蔽织物，并且发现CNT是最有效的材料。所报道的方法和材料适用于生产用于EM屏蔽或功能性电子应用的定制的、柔性的、轻质的和多孔的导电织物，包括高比表面积的导电材料。(C)2013爱思唯尔有限公司版权所有。
The present paper reports novel electromagnetic shielding (EM) fabrics produced by knife-over-roll coating and using combinations of carbon nanotube (CNT), conductive polymer and metal nanoparticles. The materials are analyzed by EM shielding and surface resistivity methodologies, scanning electron microscopy and BET surface area. The synergy among the conductive materials, percolation threshold, EM shielding behaviors and theoretical predictions are also investigated. The coating thickness obtained was 100-200 mu m, and the EM range tested was 200-1000 MHz. EM shielding fabrics of 95-99.99% (15-40 dB) were obtained, and CNT was found to be the most effective material. The reported methodology and materials are suitable for the production of customized, flexible, lightweight and porous conductive fabrics for either EM shielding or functional electronic applications, including high specific surface area conductive materials. (C) 2013 Elsevier B.V. All rights reserved.