广东电力2017，Vol.30Issue(6)：110-114,5.DOI:10.3969/j.issn.1007-290X.2017.06.022
酸碱老化对硅橡胶复合绝缘子憎水性能的影响
Influence of Acid and Alkali Aging on Hydrophobicity of Silicone Rubber Composite Insulator
摘要
Abstract
Solution immersion test was performed to simulate aging process of silicone rubber under different environmental conditions and change law of surface hydrophobicity with time of acid or alkali solution immersion was systematically investigated. It was discovered strong acid environment would cause remarkable declination of surface contact angle of the silicone rubber and nitric acid had stronger aging effect than other acid substances. While in alkaline environment, when pH value was over 12, the silicone rubber would be aged. The mechanism of acid and alkali aging was also discussed and it was found the main chain Si-O bond was destroyed due to attack of hydrogen ions or hydroxyl ions and then generated silanol. In addition, strong alkali might react with fortifier white carbon black to generate void, which could promote diffusion of water.关键词
复合绝缘子/硅橡胶/老化/酸碱/憎水性Key words
composite insulator/silicone rubber/aging/acid and alkali/hydrophobicity分类
信息技术与安全科学引用本文复制引用
彭向阳,汪政,许志海,李子健,黄振,方鹏飞..酸碱老化对硅橡胶复合绝缘子憎水性能的影响[J].广东电力,2017,30(6):110-114,5.基金项目
中国南方电网有限责任公司重点科技项目(K-GD2012-319) （K-GD2012-319）
