Modeling of the salt dissolving process of wet natural pollution on silicone rubber insulators

The hydrophobicity and hydrophobicity transfer property of silicone rubber composite insulators not only prevents the formation of continuous water film, but also make the salt in the pollution layer more difficult to dissolve out. In order to study the regularity of salt dissolving process, a model based on mass transfer laws was established in this paper and the second order partial differential equation for describing the salt dissolving process was obtained. The correctness of this model was verified by measuring the salt dissolving process of a site contaminated composite insulators in our laboratory.