A study on the insulation capacity of polymeric composite materials blended with boron minerals

Abstract

Boron minerals which are widely found in Turkey and U.S.A. has become quite popular during recentyears due to their superior flame reatardance capabilities in electric systems. In this study fourdifferent types of boron minareals such as tincal, ulexite, colemanite and boric acid has been used. Inthe first part of the study polyester samples blended with different type and concentration of boronminerals has been tested in laboratory conditions according to ASTM D 2303 surface tracking testmethod. At the next stage before the test rocess similar sampleshave been aged artificially by usingDC vibration motor according to results the mean breakdown time increase with boron concentration.However lateral vibration has reduced the service life of composite samples up to 50 %