抗氧剂于有机PTC热敏导电材料性能的稳定作用研究  

Stabilizing Effects of Antioxidants on PTC Conductive Polymeric Composites of PE/EVA/CB Systems

作　　者：李景庆[1] 许晓秋[1] 田晓明[1] 于万里[1] 张爽男[1] 

机构地区：[1]天津大学材料科学与工程学院高分子材料系,天津300072

出　　处：《材料开发与应用》2002年第6期15-19,共5页Development and Application of Materials

摘　　要：探讨了抗氧剂在聚乙烯 乙烯 醋酸乙烯酯共聚物 炭黑 (PE EVA CB)体系中的作用。结果表明 ,在体系中加入抗氧剂可以提高材料体系的结构稳定性 ,从而可以在一定程度上改善材料的热电稳定性。当在体系中加入 2 .0 %(w)的抗氧剂时可收到良好效果。In this article PE/EVA/CB systems were prepared by using melt-processing mixers and were extruded over a pair of elongated substantially parallel conductors spaced apart along the longitudinal length of the cable. In order to improve the properties of the conductive polymeric composites, antioxidants were adopted and the mechanisms were investigated. The results show that the antioxidants improve the stability of the PTC system, by improving the thermal stability of molecular structures of matrix polymers, especially in the case of containing 2% antioxidants.

关 键 词：抗氧剂 热敏导电材料 聚乙烯 PTC 炭黑 导电性 乙烯-醋酸乙烯酯共聚物 

分 类 号：O632.12[理学—高分子化学] O631[理学—化学]