PP/POE/CB半导电屏蔽复合材料的制备和性能  

Preparation and Properties of PP/POE/CB Semi-Conductive Shielding Composite

作　　者：王岩 李志强 夏宇涛 崔晗 陈胜科 WANG Yan;LI Zhiqiang;XIA Yutao;CUI Han;CHEN Shengke(Foshan Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Foshan,Guangdong 528000,China;Suzhou Thermal Research Institute Co.,Ltd.,China General Nuclear Power Corporation,Suzhou,Jiangsu 215004,China;State Grid Hubei Electric Power Co.,Ltd.,Wuhan,Hubei 430077,China;State Grid Shenyang Electric Power Supply Company,Shenyang,Liaoning 110811,China;Hangzhou Electric Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou,Zhejiang 310007,China)

机构地区：[1]广东电网有限责任公司佛山供电局,广东佛山528000 [2]中广核集团苏州热工研究院有限公司,江苏苏州215004 [3]国家电网湖北省电力有限公司,湖北武汉430077 [4]国家电网沈阳供电公司,辽宁沈阳110811 [5]国家电网浙江省电力有限公司杭州供电公司,浙江杭州310007

出　　处：《塑料》2020年第3期32-35,共4页Plastics

摘　　要：研究了导电炭黑含量和聚乙烯-辛烯弹性体接枝马来酸酐(POE-g-MAH)的加入对热塑性半导电屏蔽材料,即聚丙烯烯/聚乙烯-辛烯弹性体/炭黑(PP/POE/CB)复合体系的体积电阻率和力学性能的影响,并通过扫描电镜(SEM)分析了POE-g-MAH的加入对PP基热塑性半导电屏蔽复合材料断面形貌的影响。利用转矩流变仪对复合材料的流变性能进行了研究。结果表明,PP/POE/CB热塑性半导电屏蔽复合材料的逾渗现象与炭黑粒子在聚合物基体中的分布状态有关,POE-g-MAH的加入可以进一步降低复合材料的体积电阻率;随着导电炭黑含量的增加,复合材料的拉伸强度均呈现先增加,后降低的趋势,当炭黑用量为30%时,拉伸强度达到最大值。PP/POE/CB热塑性半导电屏蔽复合材料具有较高的导电性能、力学性能、较高的熔体流动速率及良好的加工流动性。The effect of carbon black content and maleic anhydride graft polyethylene-octene elastomer(POE-g-MAH)on the volume resistivity and mechanical properties of thermoplastic semi-conductive shielding material in power cables,i.e.polypropylene/polyethylene-octylene elastomer/carbon black(PP/POE/CB),was investigated.On the other hand,the rheological property of the composite was investigated with the Hake torque rheometer.The results showed that the percolation phenomenon of PP/POE/CB thermoplastic semi-conductive shielding composite was related to the distribution of carbon black particles in polymer matrix.The volume resistivity of the PP/POE/CB composite could be further reduced by adding POE-g-MAH.With increasing the content of conductive carbon black,the tensile strength of the composite increased first and then decreases,and reached the maximum when the content of carbon black was 30%.PP/POE/CB thermoplastic semi-conductive shielding composite had high electrical conductivity,mechanical properties,high melting index and good processing property.

关 键 词：聚丙烯 半导电屏蔽材料 炭黑 体积电阻率 逾渗现象 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]