导电PVC的制备和性能研究

Study on Preparation and Property of Conductive PVC

通过熔融共混法制备了炭黑/聚氯乙烯(PVC)导电复合材料,研究了炭黑含量对复合材料导电性能、力学性能和微观结构的影响。结果表明:当炭黑含量大于15%时,炭黑颗粒在PVC基体中形成了导通网络;炭黑的加入使导电PVC复合材料的拉伸强度先升高后下降,在其含量为20%时达到最大值,但同时使复合材料的冲击性能显著降低。

The carbon black/PVC conductive composite was prepared by melt blending.The effect of carbon black on conductive property,mechanical property and microstructure of the composite were studied.The results show that the conductive network in PVC matrix is formed when carbon black content is more than 15%;the addition of carbon black makes the tensile strength of PVC composite increase at first and then decrease,the tensile strength is up to the maximum value when carbon black content is 20%,meanwhile the impact strength of the composite decreases remarkably.