掺杂ZnO/环氧树脂基体的制备及其非线性电导改性研究

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摘要航天器在地球同步轨道（GEO）上运行时,由于受到高能电子辐射的影响,会使得介质材料表面和深层带电,电子积聚在电阻率很高的介质材料中,且难以释放,严重影响了航天器卫星的正常运行。本文以介质材料本身的特性出发,对环氧树脂（EP）基体中添加ZnO微米颗粒的方法进行改性,研制了一种新的非线性电导改性环氧树脂复合材料,并对其进行了强电场作用下电导试验和击穿试验。试验结果表明,经过改性后的ZnO/环氧树脂复合材料具有优良的非线性电导特性,在同一电场下,电流密度分别是1%试样最大,5%试样最小;当电场大于20kV/mm后,电流密度随电场的增加呈指数增长。且改性后的DC击穿场强基本不变,填料含量为5%的试样DC击穿强度最高,且其击穿强度分散性较小。

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	刘晨阳
	郑晓泉
	别成亮

关键词 ：高能电子辐照, ZnO/环氧树脂, 非线性电导改性, DC击穿场强

Abstract：When the spacecraft is running on the geostationary orbit (GEO), due to the influence of high energy electron radiation, the surface and depth of dielectric material would be charged. Electrons will accumulate in high resistivity dielectric materials and are hard to release, which affect the normal operation of the spacecraft seriously. Based on the dielectric material theory and taken a method for modification by adding ZnO micron filler into epoxide resin (EP) body, this paper developed a new kind of modified EP composites with non-linear conductivity. The electrical test and breakdown test under strong electric field were then carried out. Experimental results show that the modified ZnO/EP material has excellent nonlinear-conductivity characteristics. The current density of 1% ZnO/EP sample is the largest, and 5% ZnO/EP sample is minimum respectively under the same electric field. When the electric field is more than 20kV/mm, the current density increases exponentially with increasing the electric field. The DC breakdown voltage of modified material also remain unchanged, and the sample of 5% filler content has the highest DC breakdown strength but smaller dispersion.

Key words： High energy-electron irradiation modified ZnO/epoxide resin composites the non-linear conductivity modification DC breakdown voltage

收稿日期: 2014-08-25 出版日期: 2016-07-12

PACS:

TM242

基金资助:国家自然科学基金资助项目（50577052）

通讯作者: 郑晓泉男,1954年生,教授,博士生导师,研究方向为航天材料的内带电机理等。E-mail: xqzheng@mail.xjtu.edu.cn

作者简介: 刘晨阳男,1991年生,博士,研究方向为电力设备绝缘状态诊断及材料的非线性电导改性研究。E-mail: liucheyan@126.com

引用本文:

刘晨阳, 郑晓泉, 别成亮. 掺杂ZnO/环氧树脂基体的制备及其非线性电导改性研究[J]. 电工技术学报, 2016, 31(12): 24-30. Liu Chenyang, Zheng Xiaoquan, Bie Chengliang. Research of Preparation and Non-Linear Conductivity Modification of Doped ZnO/Epoxide Resin Material. Transactions of China Electrotechnical Society, 2016, 31(12): 24-30.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I12/24

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