环氧/纸复合材料击穿特性及空间电荷的研究  

Study of Characteristics of Breakdown Strength and Space Charge in Epoxy/Paper Composite

作　　者：申巍[1] 曹雯[2] 吴锴[2] 

机构地区：[1]陕西电力科学研究院,西安710049 [2]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：《电工技术学报》2013年第1期1-6,35,共7页Transactions of China Electrotechnical Society

摘　　要：研究对比了纯环氧树脂和环氧/纸复合材料的击穿及空间电荷特性,深入探讨加入绝缘纸对环氧树脂空间电荷的影响及其破坏机理。研究发现,在交流电场下,环氧/纸复合材料的击穿电压比纯环氧树脂低;而在直流电场下,环氧/纸复合材料的击穿电压比纯环氧树脂高。这是因为在环氧树脂中加入纸会在环氧树脂和纸的界面处产生异极性的空间电荷,在低电场下,环氧/纸复合材料的电场畸变较高,但在高电场下,它可以使电场畸变降低。The space charge properties and breakdown characteristics in epoxy/paper composite are studied.The research shows that the breakdown strength of epoxy/paper composite is lower than that of pure epoxy under AC voltage.While,under DC voltage the former is higher than the latter.The reason is that adding paper into pure epoxy resin can cause hetero-polarity space charges to easily generate and gather at the interface between epoxy and paper,which will lead to higher electric field distortion of epoxy/paper composite in lower DC electric field,but a lower electric field distortion in higher DC electric field.

关 键 词：环氧树脂 环氧 纸复合 空间电荷 击穿 

分 类 号：TM206[一般工业技术—材料科学与工程]