Interfacial bonding enhancement of the RTV recoating with sandwiched contaminant by plasma jet  

作　　者：Shanshan Wang Shuang Li Jianjun Li Ruobing Zhang Hui Liu 

机构地区：[1]Division of Energy and Environment,Graduate School at Shenzhen,Tsinghua University,Shenzhen,518055,People's Republic of China [2]State Grid Shandong Electric Power Research Institute,Jinan,People's Republic of China

出　　处：《High Voltage》2019年第4期345-348,共4页高电压（英文）

基　　金：supported by the National Natural Science Foundation of China under Grant No.51677105;Shenzhen Science,Technology&Innovation Commission(SZSTI)Fund under Grant No.JCYJ20180508152057527.

摘　　要：Room temperature vulcanised(RTV)silicone rubber is widely used in electrical power system,applied to the glass or porcelain insulator surface to enhance insulation.RTV coatings get contaminated after long-term operation and need to be recoated.Contaminants accumulate and embed into the surface of base RTV coating,forming a hard-to-remove inorganic transition layer.Such sandwiched contaminant layer destroys the adhesion between original and reapplied silicone rubber coating greatly.Authors’study innovatively reports a method to enhance interfacial bond properties of the RTV recoating with sandwiched contaminant layer,by using an atmospheric-pulsed discharge plasma jet(APPJ)for surface treatment.Water boiling test and 180-degree peel test were conducted to evaluate interfacial bond properties macroscopically.Scanning electron microscopy(SEM)was applied to observe the cross-section of recoating interface,while Fourier-transform infrared spectroscopy(FTIR)to detect chemical changes of contaminant layer,giving out microscopic and theoretical explanation.

关 键 词：COATING SANDWICH RUBBER 

分 类 号：TM216[一般工业技术—材料科学与工程]