This paper present the effect of accelerated aging upon the polymeri material made of epoxy resins, polydimethyle siloxane (PDMS), and rice husk ash compound. The samples of epoxy resin insulating material were based on Diglycidyl Ether of Bisphenol A (DGEBA), Metaphenylene Diamine (MPDA) as curing agent, polysiloxane, and 325 mesh Rice Husk Ash (RHA) as filter. This research aims to observase changes of chemical composition on the surface insulating materials after accelerated aging in the laboratory for 96 hours. Experimental method was carried out through the following procedure. The samples were installed in the special chamber, then were exposed to pollutant at their surfaces. They were radiated using ultraviolet in artficial environment. The chemical compusition on the samples surface was analyzed using FITIR Spectrophotometer. The results showed that accelerated aging of materials did not affect the chamical composition of the surface. Keywords; epoxy resin, polysiloxame, rice husk ash, ATR- FITIR