硅橡胶表面分离水珠的局部放电对表面特性的影响  

EFFECTS ON SURFACE PERFORMANCE OF PARTIAL DISCHARGES DUE TO DISCRETE WATER DROPLETS ON THE SILICONE RUBBER

作　　者：司马文霞[1] 刘贞瑶[2] 蒋兴良[1] 杨庆[1] 

机构地区：[1]重庆大学高电压与电工新技术教育部重点实验室 [2]江苏省电力科学研究院,江苏省南京市210036

出　　处：《中国电机工程学报》2005年第6期113-118,共6页Proceedings of the CSEE

基　　金：国家自然科学基金重大研究计划重点项目(90210026);国家自然科学基金项目(50007008)。~~

摘　　要：通过对硅橡胶表面存在分离水珠时的局部放电的测量和数据处理,得到了水珠局部放电相位谱图;并采用傅立叶变换红外光谱分析仪(FTIR)分析了局部放电引起的硅橡胶表面结构的变化。水珠间的放电过程中产生的热量和臭氧使硅橡胶表面发生裂解、氧化、交联、水解和缩合等反应,在其表面生产亲水性的硅醇、破坏甲基的对称结构和增加含氧量,这些导致了憎水性能的下降。According to the measurement and data processing of partial discharges due to discrete water droplets on the surface of silicone rubber, phase characteristic of partial discharge for water droplets is obtained. And the change of silicone rubber surface structure by the Fourier Transform Infrared Spectroscopy (FTIR) is analyzed. The energy and ozone produced in discharges between water droplets induces some chemical reactions such as scission, oxidation, cross-linking, hydrolysis and condensation. These reactions produce hydrophilic silanol at its surface, destroy symmetrical structure of methyl and increase its oxygen content, which cause the decrease of hydrophobicity.

关 键 词：硅橡胶表面 水珠 表面特性 分离 电对 局部放电 光谱分析仪 傅立叶变换 数据处理 表面结构 放电过程 对称结构 憎水性能 亲水性 含氧量 相位 

分 类 号：TM925.61[电气工程—电力电子与电力传动] TS803.6[轻工技术与工程]