期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2012
卷号：4
期号：2
出版社：School of Electrical Engineering and Informatics
摘要：The unique hydrophobicity transfer property of silicone rubber material ensures its good hydrophobicity when being polluted with pollutants. Earlier studies have shown that the migration of low molecular weight (LMW) components of polysiloxane from the bulk to the surface of silicone rubber is the root cause of the hydrophobicity transfer property. This migration process is influenced by the ambient conditions. In this paper the influence of temperature on the transfer property is investigated, and transfer characteristics on HTV-SR have been found which exhibit a saltus between 50? and 55?. The influence of humidity on the transfer property with different kinds of pollutants is investigated using the saturated salt solution method to control the relative air humidity. The results show that the influence of relative humidity is related with the hygroscopicity of soluble and non-soluble substances in pollutants on the surface. The hydrophobicity transfer property of HTV-SR polluted with 10 different kinds of inert materials is investigated, and the results show that different kinds of pollutants have a great influence on the hydrophobicity transfer property of HTV-SR. DC artificial pollution tests were conducted in Yunnan, China. The results show that the pollution flashover performance of composite insulators is closely related to the hydrophobicity state of the surface. The flashover voltage of composite suspension insulators rises with the increase of the transfer time and the mass fraction of kieselguhr in pollutants.
