Enhanced microwave absorption of multi-walled carbon nanotubes/epoxy composites incorporated with ceramic particles

被引：82
作者：
Qing, Yuchang [1 ]
Wang, Xuan [1 ]
Zhou, Yingying [1 ]
Huang, Zhibin [1 ]
Luo, Fa [1 ]
Zhou, Wancheng [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2014年 / 102卷
关键词：
Functional composites; Carbon nanotubes; Electrical properties; Microwave absorption; ELECTROMAGNETIC-WAVE-ABSORBER; COMPLEX PERMITTIVITY; MATRIX COMPOSITES; EPOXY-SILICONE; NANOCOMPOSITES; PROPERTY; IRON; FABRICATION; DISPERSION; COATINGS;
D O I：
10.1016/j.compscitech.2014.08.006
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Microwave absorbing composites composed of both multi-walled carbon nanotubes (MWCNTs) and various ceramic particles as absorbers were prepared, and their mechanical properties, electrical conductivity, complex permittivity, and microwave absorbing properties were investigated. Thin thickness, broadband absorption composites with homogeneously dispersed MWCNTs and ceramic particles were obtained. The influences of temperature and ceramic particles on the complex permittivity and microwave absorbing properties of the composites were investigated in the frequency range of 12.4-18 GHz. The incorporation of ceramic particles demonstrated enhanced electrical conductivities, as well as altered the values and complex permittivity frequency dependencies of the MWCNTs/epoxy composite. These changes led to significantly improved microwave absorptions. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：161 / 168
页数：8
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