环氧树脂/BN导热绝缘材料表面击穿特性研究  

Analysis Surface Breakdown Characteristics of Epoxy Resin/BN Thermal Insulation Material

作　　者：肖萌[1] 杜伯学[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《低压电器》2013年第20期11-16,共6页Low Voltage Apparatus

基　　金：国家自然科学基金(50777048)

摘　　要：通过在环氧树脂基体中添加氮化硼(BN)颗粒以提高环氧树脂的热导率,研究了BN颗粒质量分数对脉冲电压下表面击穿试验中热导率以及放电量等的影响,得出了随着BN颗粒质量分数的增加热导率随之增加而放电量随之减小的趋势。表明,BN颗粒提高了环氧树脂的热导率,进而提高了环氧树脂复合材料的耐表面击穿性能。In the paper,one possible way to obtain high thermal conductivity was the addition of BN particles into epoxy. The thermal conductivity effects on the time to tracking failure and the discharge quantity of discharge current were discussed. The results show that with increasing the concentration of BN particles, the maximum temperature and the discharge quantity decrease. The resistance to tracking is improved by the filler of BN particles, which is due to the improvement of thermal conductivity.

关 键 词：环氧树脂 绝缘材料 导热率 表面击穿 热谱分析 放电量 

分 类 号：TM715[电气工程—电力系统及自动化]