Conduction mechanism analysis of modified polyimide composite

被引：0

作者：

Lei, Weiqun ^{[1
]}

Wu, Jiang ^{[1
]}

Peng, Ping ^{[1
]}

Yang, Pei ^{[1
]}

Zheng, Xiaoquan ^{[1
]}

机构：

[1] State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an

来源：

Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2015年 / 41卷 / 06期

关键词：

Dielectric property; Glass fabric; Modifier; Non-linear conductivity characteristic; Polyimide;

D O I：

10.13700/j.bh.1001-5965.2014.0427

中图分类号：

学科分类号：

摘要：

Firstly, semi-conductive granules in different diameters from nanometer to micron were used to modify polyimide resin that strengthened by glass fabric. Four kinds of polyimide resin with non-alkalis glass fibers were produced, including the original, micro-filler, nano-filler, and micro/nano-filler modified samples; besides, one kind of polyimide resin with glass fabric that contained small amount of alkalis was prepared as well. The dielectric properties and non-linear conductivity property of all the samples were tested. As a result, it is discovered that the size of filler has little influence on materials' dielectric properties. However, fillers in nanometer decrease a bit of the volume conductivity of the materials, while those in micrometer not only make it increase obviously but also change it into non-linear conductivity. Furthermore, comparing with samples strengthened by non-alkalis glass fabric, the threshold electric field of non-linear conductivity of the polyimide resin strengthened by the glass fabric with small amount of alkalis has a distinct decrease. ©, 2015, Beijing University of Aeronautics and Astronautics (BUAA). All right reserved.

引用

页码：1049 / 1054

页数：5

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