Dielectric properties improvement of LDPE based on nano fillers

Presently along with traditional insulators such as glass and porcelain, etc., the polymeric insulators are also used world widely. The electrical properties of these composite insulations can be improved by adding of nano-sized inorganic filler. Therefore, composite insulators with nano-fillers have attracted a lot of attention. These polymeric insulators are very sensitive to various environmental parameters such as UV radiations, heat, etc. This work describes analytical study of some factors such as corona discharge, temperature, and ultraviolet (UV) radiations that affect the composite insulator performance. The nano materials such as Alumina (AhO3), Silica (SiO
₂
), Fumed Silica, and Clay having different concentrations are added into low density polyethylene (LDPE) polymeric insulators. The samples were aged in the laboratory as per IEC std. 61109 and then the electrical/non-electrical characteristics were studied before and after the accelerated aging of the samples.