定向分布碳纤维复合材料介电性能研究

doi:10.3724/SP.J.1077.2012.12364

无机材料学报 ›› 2012, Vol. 27 ›› Issue (11): 1223-1227.DOI: 10.3724/SP.J.1077.2012.12364

定向分布碳纤维复合材料介电性能研究

伏金刚, 朱冬梅, 周万城, 罗发

(西北工业大学凝固技术国家重点实验室, 西安710072)

收稿日期:2012-06-01 修回日期:2012-06-13 出版日期:2012-11-20 网络出版日期:2012-10-25
作者简介:FU Jin-Gang(1987–), male, candidate of master degree. E-mail: fjg0608034215@163.com
基金资助:
National Natural Science Foundation of China(51072165)

Anisotropic Dielectric Properties of Short Carbon Fiber Composites

FU Jin-Gang, ZHU Dong-Mei, ZHOU Wan-Cheng, LUO Fa

(State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China)

Received:2012-06-01 Revised:2012-06-13 Published:2012-11-20 Online:2012-10-25
About author:FU Jin-Gang(1987–), male, candidate of master degree. E-mail: fjg0608034215@163.com
Supported by:
National Natural Science Foundation of China(51072165)

摘要/Abstract

摘要： 以碳纤维为填充物, 环氧树脂为基体, 制备了碳纤维/环氧树脂介电复合材料. 介绍了两种分布方式对复合材料介电性能的影响, 分别研究了两种分布方式的介电常数随碳纤维含量和长度的变化规律. 在2.6–8.2 GHz频率范围内, 轴向介电常数是径向介电常数的数倍; 实部和虚部都随着碳纤维含量的增加而增大; 碳纤维长度也对介电性能的各向异性影响显著. 双层微波传输带模型可以合理地解释这些规律.

关键词: 各向异性, 介电性能, 复合材料, 短切碳纤维

Abstract: Dielectric materials based on short carbon fiber (Csf) dispersed inside epoxy resin (EP) matrix composites were prepared. The complex permittivity of two types of distributions over the frequency range from 2.6 GHz to 8.2 GHz was reported. The effects of orientation with different content and length of carbon fibers on dielectric properties were investigated. It is found that axial permittivity of carbon fibers is several times larger than their radial permittivity. The real and imaginary parts of complex permittivity increase gradually with increasing the Csf contents in the composites, and the fiber length also affects the anisotropic property greatly. The two layered transmission line model is used to explain the phenomena.

Key words: anisotropic, dielectric properties, composite materials, short carbon fiber

中图分类号:

TB34

伏金刚, 朱冬梅, 周万城, 罗发. 定向分布碳纤维复合材料介电性能研究[J]. 无机材料学报, 2012, 27(11): 1223-1227.

FU Jin-Gang, ZHU Dong-Mei, ZHOU Wan-Cheng, LUO Fa. Anisotropic Dielectric Properties of Short Carbon Fiber Composites[J]. Journal of Inorganic Materials, 2012, 27(11): 1223-1227.

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定向分布碳纤维复合材料介电性能研究

Anisotropic Dielectric Properties of Short Carbon Fiber Composites

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