聚氯乙烯/炭黑复合型泡沫导电高分子材料的电性能

聚氯乙烯/炭黑复合型泡沫导电高分子材料的电性能

李茁实¹,², 张国¹,², 李继新¹,², 王新雷¹,², 刘秀奇¹,²

1. 吉林大学汽车材料教育部重点实验室, 长春 130022; 2. 吉林大学材料科学与工程学院, 长春 130012

收稿日期:2006-09-28 修回日期:1900-01-01 出版日期:2007-07-26 发布日期:2007-07-26
通讯作者: 张国

Electrical Properties of PVC/CB Conductive Foam

LI Zhuo shi¹,², ZHANG Guo¹,², LI Ji xin¹,², WANG Xin lei¹,², LIU Xiu qi¹,²

1. Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130022, China; 2. College of Materials Science and Engineering, Jilin University, Changchun 130012, China

Received:2006-09-28 Revised:1900-01-01 Online:2007-07-26 Published:2007-07-26
Contact: ZHANG Guo

摘要/Abstract

摘要： 以特导炭黑（CB）为导电填料, 聚氯乙烯（PVC）和三元乙丙橡胶（EPDM）为主基体制备PVC泡沫导电复合材料, 研究该复合材料的泡孔结构和阻温特性, 分析炭黑含量、交联剂和发泡剂对复合材料电性能的影响. 结果表明, 所制备的导电泡沫具有较理想的泡孔结构, 经过升温电阻测试, 该泡沫体出现负温度系数（NTC）效应, 随着炭黑含量的增加, 在NTC效应后期出现正温度系数（PTC）效应. 通过探讨NTC效应的机理, 确定了发泡剂和交联剂的用量, 从而获得良好的泡沫性能和NTC特性的导电泡沫材料. 

关键词: 聚氯乙烯, 泡沫, 炭黑, 导电复合材料, NTC效应

Abstract: The electrical conductivity of PVC/CB foam made from carbon black, PVC and EPDM was studied. The bubble structure and resistivity-temperature characteristic were observed. Influences of carbon black content, crosslinker, foamer on conductive properties of PVC/CB foaming conductive composites were investigated. The obtained foam has a rather good bubble structure and mainly performs NTC effect during heating process. For the composites with high content of CB, PTC effect after a long time NTC effect was found. The conductive mechanism was explained and the proper filler contents of crosslinker and foamer were confirmed to make the composite have not only good foam performance but also NTC characteristic.

Key words: PVC, foam, CB, conductive composite, negative temperature coefficient effect

中图分类号:

O631

李茁实,, 张国,, 李继新,, 王新雷,, 刘秀奇,. 聚氯乙烯/炭黑复合型泡沫导电高分子材料的电性能[J]. J4, 2007, 45(04): 669-672.

LI Zhuo shi,, ZHANG Guo,, LI Ji xin,, WANG Xin lei,, LIU Xiu qi,. Electrical Properties of PVC/CB Conductive Foam[J]. J4, 2007, 45(04): 669-672.