微米水合氧化铝/环氧复合材料脉冲真空闪络影响因素  

Effect factors on pulsed flashover of epoxy composite filled with micro-scale Al_2O_3·3H_2O particles in vacuum

作　　者：陈玉[1] 成永红[1] 谢小军[1] 陈琪[1] 韶蕾[1] 李盛涛[1] 吴锴[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《强激光与粒子束》2008年第6期1022-1026,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点项目资助课题(50437030)

摘　　要：研究了微米Al2O3.3H2O/环氧复合材料的脉冲真空闪络影响因素。分别给出了固化剂、分散方法、偶联剂对复合材料闪络特性的影响和纯环氧表面抛光前后的脉冲真空闪络特性。实验结果表明:酸酐固化的试样比胺类固化试样闪络电压要高;高速分散方法与超声波分散方法相比,采用前者制备的复合材料有更好的分散特性;使用偶联剂处理填料比不使用时得到的环氧复合材料闪络电压高;抛光后的纯环氧试样有较高的闪络电压。The factors on pulsed vacuum flashover of epoxy composite filled with micro-scale Al2O3 · 3H2O particles are studied. The effects of coupling agent, dispersion method, curing agent, and surface roughness on the flashover properties are investigated respectively. Compared with the amine curing agent, the casting epoxy resin cured by the acid anhydride has higher flashover voltage. The epoxy composite matrix dispersed by the high shear force has better disperse effect compared with that dispersed by the ultrasonic dispersion method. Epoxy composite filled with micro-scale particles treated by coupling agent has higher flashover voltage than that without coupling agent treatment. After surface polishing, the flashover voltage of the epoxy sample becomes higher.

关 键 词：Al2O3·3H2O颗粒 环氧复合材料 脉冲真空闪络 固化 分散 偶联 抛光 

分 类 号：TM85[电气工程—高电压与绝缘技术]