Mechanism on improved surface flashover performances in vacuum of epoxy resin using fluorocarbon plasma treatment  

作　　者：Sile Chen Tao Cheng Zhaoquan Chen Guanjun Zhang 

机构地区：[1]School of Electrical and Information Engineering,Anhui University of Technology,Ma'anshan,Anhui,China [2]State Key Laboratory of Electrical Insulation and Power Equipment,School of Electrical Engineering,Xi'an Jiaotong University,Xi'an,Shaanxi,China

出　　处：《High Voltage》2022年第3期420-428,共9页高电压（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:11775175,52177126;Natural Science Research Fund of Higher Education of Anhui Province,Grant/Award Numbers:KJ2020A0246,KJ2020A0232;Youth Fund of Anhui University of Technology,Grant/Award Number:QZ202012。

摘　　要：To improve the insulation,strength of materials is a permanent topic in the fields of high voltage and insulation,and surface insulation is one of the difficulties.Research shows that the surface fluorination by a non-equilibrium plasma is a promising method to enhance the surface flashover characteristics of insulating materials.However,the de-terminants of flashover characteristics are so many that the mechanism is not well known.This paper aims to find out the reasons for the surface insulation improvement and optimise the plasma process parameters.The epoxy resin surfaces are modified by a fluorocarbon plasma,and the flashover voltages in vacuum and secondary electron emission yield are tested experimentally.Combined with the state of the art and the authors'previous work,the mechanism of improved surface flashover performances is investigated in depth from three aspects:the plasma process parameters,the surface physical and chemical properties and the surface electrical performances.A compre-hensive understanding of the mechanism is concluded,of which the whole processes from the plasma surface modification of materials to the surface insulation performances are taken into account.It is hopeful to promote the practical applications of plasma fluorination in electrical engineering through the findings of this paper.

关 键 词：INSULATION flash RESIN 

分 类 号：TM216[一般工业技术—材料科学与工程]