间隙距离对交流电晕老化RTV涂层憎水性能的影响分析  

Analysis of Influence on Gap Distance of AC Corona Aging on Hydrophobicity of RTV Coating

作　　者：王磊 赵建利[1,2] 郑璐 郭浩南 WANG Lei;ZHAO Jianli;ZHENG Lu;GUO Haonan(Inner Mongolia Power Research Institute,Hohhot 010020,China;Inner Mongolia Enterprise Key Laboratory of High Voltage and Instulation Technology,Hohhot 010020,China;Inner Mongolia Power(Group)Co.,Ltd.,Hohhot 010010,China)

机构地区：[1]内蒙古电力科学研究院,呼和浩特010020 [2]内蒙古自治区高电压与绝缘技术企业重点实验室,呼和浩特010020 [3]内蒙古电力(集团)有限责任公司,呼和浩特010010

出　　处：《内蒙古电力技术》2020年第6期85-87,共3页Inner Mongolia Electric Power

基　　金：内蒙古电力(集团)有限责任公司科技项目“人工污秽实验室建设”(2019-96)。

摘　　要：为深入分析电晕放电老化后RTV(室温硫化硅橡胶)涂层憎水性能变化机理,测试了2 mm、3 mm、5 mm、8 mm 4种间隙距离下RTV涂层的憎水性能。试验结果表明:交流电晕下RTV老化试样的初始静态接触角随着间隙距离的增加而增大,憎水性恢复速率则随着间隙距离的增加而减小。结合4种试样的红外光谱图可知,随着间隙距离的增加,交流电晕放电产生的电子及带电离子到达RTV试样表面的数量减少,对C-H键的破坏也逐渐减弱,因此RTV涂层的憎水性受到交流电晕的影响减弱。In order to further analyze the mechanism of the hydrophobicity change of room temperature vulcanized(RTV)silicone rubber after corona aging,the hydrophobic properties of AC corona RTV silicone rubber materials are tested under the gap distance of 2 mm,3 mm,5 mm,8 mm.The experimental results show that the initial static contact angle increases with the increase of gap distance,and the hydrophobic recovery rate decreases with the increase of gap distance.According to the infrared spectrum of four samples,it is because that with the increase of gap distance,the number of electrons and charged ions produced by discharged AC corona reaching the surface of silicone rubber sample decreases,and the damage to C-H bond also decreases gradually.Therefore,the hydrophobicity of silicone rubber material is weakened by AC corona with the increase of gap distance.

关 键 词：交流电晕 间隙距离 RTV 憎水性能 静态接触角 

分 类 号：TM21[一般工业技术—材料科学与工程]