Electromagnetic and microwave absorbing properties of multi-walled carbon nanotubes/polymer composites

被引：315

作者：

Fan, Zhuangjun ^{[1
]}

Luo, Guohua ^{[1
]}

Zhang, Zengfu ^{[1
]}

Zhou, Li ^{[1
]}

Wei, Fei ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab Green Chem React Engn & Technol, Dept Chem Engn, Beijing 100084, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 132卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

carbon nanotubes; polymer; composites; microwave absorbing materials;

D O I：

10.1016/j.mseb.2006.02.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The preparation and characterization of CNTs/polymer (PET, PP, PE and varnish) composites were studied for microwave absorption applications in the range of 2-18 GHz. The results indicated the position of reflectivity peak moves to a lower frequency and the loss factors of composites increase with increasing CNTs concentrations. When CNTs concentration was above 4 wt%, there was a sharp increase of loss tangent. 4 wt% CNTs/PET and 8 wt% CNTs/varnish composites had considerable absorbing peak at 7.6 GHz, 15.3 GHz and achieved maximum absorbing value of 17.61 dB, 24.27 dB, respectively. In addition, the frequencies range for absorbing values exceeding 5 dB of CNTs/(PET, PP, varnish) composites are 13 GHz. 10 GHz and 6 GHz, respectively. The microwave absorption of CNTs composites can be mainly attributed to the dielectric loss rather than magnetic loss. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：85 / 89

页数：5

共 11 条

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