摘要
Surface modification techniques with plasma are widely investigated to improve the surface insulation capability of polymers under dry conditions,while the relationship between treatment method,surface physical and chemical properties,and wet flashover voltage is still unclear for inorganic ceramics.In this work,the surface insulation properties of ceramics under wet conditions are improved using nanosecond-pulsed dielectric barrier discharge with polydimethylsiloxane(PDMS)as the precursor.The relationships between PDMS concentration and the water contact angle,dry and wet flashover voltages are obtained to acquire the optimal concentration.The surface charge dissipation test and surface physio-chemical property measurement with SEM,AFM,XPS are carried out to further explore the mechanism of surface insulation enhancement.The results show that film deposition with micron thickness and superhydrophobicity occurs at the PDMS concentration of 1.5%.The dry flashover voltage is increased by 14.6%due to the induction of deep traps,while the wet flashover voltage is increased by 66.7%.The gap between dry-wet flashover voltage is decreased by 62.3%compared with the untreated one due to the self-cleaning effect.
作者
黄成硕
解向前
周洋洋
祝曦
崔行磊
方志
Chengshuo HUANG;Xiangqian XIE;Yangyang ZHOU;Xi ZHU;Xinglei CUI;Zhi FANG(Nanjing Tech University College of Electrical Engineering and Control Science,Nanjing 211816,People's Republic of China;Zhongtian Technology Industrial Wire and Cable System Co.Ltd.,Nantong 226010,People's Republic of China)
基金
partially supported by National Natural Science Foundation of China(Nos.51977104,52037004 and 52207160)
the Natural Science Foundation of Jiangsu Province(No.BK20220341)。
