炭黑-聚丙烯复合型导电高分子材料的电热性能研究

Study on Electrothermic Properties of Carbon BlackPolypropylene Composites

文中研究了炭黑（ＣＢ）作为填充相，聚丙烯（ＰＰ）作为基体相的复合型导电高分子材料的电热性能。实验结果表明，ＣＢ－ＰＰ复合材料具有明显的渗流效应、正温度系数效应和低场下的线性伏安特性。利用这些特性，可改善或调节材料的导电、导热和机械性能，制备开关材料和面发热体材料等。

This paper discussed the electrothermic properties of the conducting carbon blackpolypropylene CBPP composite.The experimental results showed the CBPP composites possess a lower percolation threshold,a notable positive temperature coefficient and a linear characteristic of currentvoltage at lower voltage.These characteristics are beneficial to improving electrothermic and mechanical properties of CBPP composites.