A Study on the Surface Change and Dielectric Properties of Epoxy Insulator by Water Degradation

초록

In the examining application of polymer as electrical insulators, it is very important to perform accelerated aging test substituted the process which polymeric insulator is degraded for long-time by the process of short-time. The purpose of this paper is to examine the properties of water degradation which affect on the efficiency of epoxy insulator. To do this, the surface properties on epoxy insulaor have been investigated after long-time accelerated degradation in boiling water condition. The experimental results showed the contact angle and surface resistivity of the treated samples were decreased as a function of exposed time. In dielectric properties, dielectric constant was increased as accelerated degradation with water treatments.