表面状态对硅橡胶电晕老化进程及特性的影响研究-中国材料进展

文章信息/Info

Title:: Study on the Effect of Surface State on Corona Aging Process and Characteristics of Silicone Rubber

Author(s):: BI Maoqiang; DONG Yang; CHEN Xi; JIANG Tianyan; PAN Aichuan; YANG Junwei; （School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China）

摘要:: 为探究表面状态对硅橡胶电晕老化进程及特性的影响，采用多针-板电极对表面清洁和表面覆污的硅橡胶样品进行不同时长的电晕老化试验，测量老化前后材料表面憎水性和微观结构的变化，并在人工雾室中完成沿面闪络试验。研究结果表明：相较于表面清洁的硅橡胶，在一定程度上，表面污秽会减弱电晕放电对硅橡胶材料的影响，随着污秽度的增加，老化前后静态接触角变化逐渐减小，电晕放电对硅橡胶表面的破坏性减弱；硅橡胶的闪络电压随表面污秽度的增大而降低，并逐渐趋于平稳，同时老化程度越深，闪络电压也越低。本文的研究结果可为硅橡胶复合绝缘子设计和防污闪提供参考。

Abstract:: In order to explore the effects of surface condition on the corona aging process and characteristics of silicone rubber, this paper uses a multi-needle-plate electrode to conduct corona aging tests for different time on silicone rubber samples with clean and soiled surfaces, measures changes in the hydrophobicity and microstructure of the material surface before and after aging, and tests the surface flashover voltage in the artificial fog chamber. The research results show that: compared with silicone rubber with clean surface, to a certain extent, surface contamination will weaken the impact of corona discharge on silicone rubber surface, with the increase of pollution degree, the change of static contact angle after aging gradually decreases, and the destructive effect from corona discharge on the surface of silicone rubber weakens; the flashover voltage of silicone rubber decreases with the increase of pollution degree and gradually stabilizes, at the same time, the deeper the aging degree, the lower the flashover voltage. The results of this paper may provide a reference for the design and anti-pollution flashover of silicone rubber composite insulators.