炭黑填充LDPE体系发泡复合材料的导电性能

炭黑填充LDPE体系发泡复合材料的导电性能

李继新¹,²,³, 张国¹,², 李茁实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 130012; 2. 吉林大学材料科学与工程学院, 长春 130012; 3. 沈阳工业大学辽阳校区石油化工学院, 辽宁辽阳 111003

收稿日期:2007-01-29 修回日期:1900-01-01 出版日期:2008-01-26 发布日期:2008-01-26
通讯作者: 张国

Electrical Properties of CB Filled LDPE Conductive Foam

LI Ji xin¹,²,³, ZHANG Guo¹,², LI Zhuo shi¹,², WANG Xin lei¹,², LIU Xiu qi¹,²

1. Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130012, China;2. College of Materials Science and Engineering, Jilin University, Changchun 130012, China; 3. School of Petrochemical Engineering, Liaoyang Campus, Shenyang University of Technology, Liaoyang 111003, Liaoning Province, China

Received:2007-01-29 Revised:1900-01-01 Online:2008-01-26 Published:2008-01-26
Contact: ZHANG Guo

摘要/Abstract

摘要： 以低密度聚乙烯（LDPE）和乙烯-乙酸乙烯酯（EVA）为主基体, 乙炔炭黑(ACET)为导电填料, 偶氮二甲酰胺（AC）为发泡剂, 过氧化二异丙苯（DCP）为交联剂制备LDPE/EVA/CB导电泡沫复合材料. 通过分析炭黑含量、交联剂、发泡剂对复合材料电性能的影响表明, 该导电泡沫具有较理想的泡孔结构, 升温电阻测试表明, LDPE/EVA/ACET导电发泡复合材料具有较好的开关特性, 呈明显的正温度系数(PTC)特性, 并确定了发泡剂和交联剂的用量, 获得了具有较好泡沫性能和PTC特性的导电泡沫材料. 

关键词: 低密度聚乙烯, 炭黑, 泡沫, 正温度系数特性, 导电复合材料

Abstract: LDPE/EVA/CB conductive foam was made with low density polyethlene (LDPE) and ethylene-vinylacetate copolymer (EVA) as matrix, acetylene carbon black (CB) as conductive filler, azobisformamide (AC) as foamer and dicumyl peroxide (DCP) as crosslinker. The bubble structure and resistivity-temperature characteristic were observed. Influences of carbon black content, crosslinker and foamer on conductive properties of LDPE/EVA/CB foaming conductive composites were investigated. The obtained foam has a rather good bubble structure and a switching characteristic. Acetylene CB filled LDPE/EVA system exhibits positive temperature coefficient (PTC) effect during heating process. The proper filler contents of the crosslinker and foamer were confirmed to make the composite have not only good foam performance but also PTC characteristic.

Key words: low density polyethlene, carbon black, foam, positive temperature coefficient characteristic, conductive composite

中图分类号:

O482

李继新,,, 张国,, 李茁实,, 王新雷,, 刘秀奇,. 炭黑填充LDPE体系发泡复合材料的导电性能[J]. J4, 2008, 46(01): 105-108.

LI Ji xin,,, ZHANG Guo,, LI Zhuo shi,, WANG Xin lei,, LIU Xiu qi,. Electrical Properties of CB Filled LDPE Conductive Foam[J]. J4, 2008, 46(01): 105-108.