A Study on Thermegravimetry and Tracking Resistance of PVC Doped with $A\;\ell\;(OH)_3$

$A\;\ell\;(OH)_3$를 첨가(添加)한 PVC의 내(耐)Tracking성(性)과 열분석(熱分析)에 관한 연구(硏究)

Using as an alternate of insulating material for outdoor and cable, however, it has still many problems to be solved in the field of material such as resistances of environment and tracking. In this paper, Tracking property of PVC filled with aluminum hydroxide have been investigated by ASTM D 2303 method. It was found that time to track of PVC filled aluminum hydroxide was longer than that of unfilled PVC. Tensile strength and elongation of PVC were decreases increased with aluminum hydroxide contents. On the other hand, Thermegravimetry of PVC decreased. Therefore, the increase of time to tracking breakdown by antitracking additive can be explained by increased degradation temperature of polymer.