高压电器2018，Vol.54Issue(5)：33-37,5.DOI:10.13296/j.1001-1609.hva.2018.05.005
微/纳米复合涂层对环氧树脂直流电场下闪络电压的影响
Influence of Micro/Nano Composite Coating on Flashover Characteristics of Epoxy Resin
摘要
Abstract
Epoxy resin materials are widely used in HV equipments because of their excellent properties in electronic, mechanics, heat and other fields. However, under HVDC, the surface of epoxy resin is easy to accumulate charge, which will distort the electric field nearby and cause flashover. In this paper, micro SiO2/EP, nano SiO2/EP and nano TiO2/EP coating were respectively coated on the surface of epoxy matrix. The DC flashover voltage of coated samples was measured at 0. 1 MPa in air and SF6 respectively, and flashover voltage of samples after preset voltage was also measured at 0. 1 MPa SF6. The results show that, flashover voltage in the air of coated epoxy resin samples was not quite different from the samples without coating. However, there was great difference among them in SF6. Among samples containing micron SiO2, the short-time flashover voltage of 3 wt％ was the highest. Both the short-term flashover voltage of nano SiO2 and nano TiO2 coating samples reached their maximum when the content of particles was 1 wt％. After preset voltage, the flashover voltage of the matrix decreased by 16. 7％. For samples containing coating, the flashover voltage was higher than their short-term voltage and greater than the uncoated epoxy matrix. All the samples with micron SiO2/EP, nano SiO2/EP and nano TiO2/EP coating reached their maximum when the particle content is 3 wt％, and the sample with micron SiO2 particles was highest among them.关键词
环氧树脂/微/纳米复合涂层/闪络电压/预压Key words
epoxy resin/micro/nano composite coating/flashover voltage/preset voltage引用本文复制引用
艾昕,周福文,金花,秦司晨,成毅,屠幼萍,王璁,白福军,林俊..微/纳米复合涂层对环氧树脂直流电场下闪络电压的影响[J].高压电器,2018,54(5):33-37,5.基金项目
国家重点基础研究发展计划项目(973计划)(2006CB200303,2006CB2003056) （973计划）
国家自然基金(51577062).Project Supported by the National Basic Research Program(973 Program)(2006CB200303,2006CB2003056),National Science Foundation of China Under Project(51577062). （51577062）
