高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (2): 382.

• 研究简报 • 上一篇    下一篇

多壁碳纳米管填充高密度聚乙烯复合材料的导电特性

李文春, 沈烈, 郑强   

  1. 浙江大学高分子科学与工程学系, 杭州 310027
  • 收稿日期:2004-04-06 出版日期:2005-02-10 发布日期:2005-02-10
  • 通讯作者: 郑 强(1960年出生),男,教授,博士生导师,主要从事高聚物流变学和多组分高分子体系结构和性能研究.E-mail:zhengqiang@zju.edu.cn E-mail:zhengqiang@zju.edu.cn
  • 基金资助:

    国家自然科学基金重点项目(批准号:50133020);国家杰出青年基金(批准号:50125312)资助

Conductive Properties of Multiwalled Carbon Nanotubes Filled High-density Polyethylene Composites

LI Wen-Chun, SHEN Lie, ZHENG Qiang   

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2004-04-06 Online:2005-02-10 Published:2005-02-10

关键词: 多壁碳纳米管, 高密度聚乙烯, 渗流阈值, 导电性

Abstract: Conductive properties of multiwalled carbon nanotubes(MWNTs) filled high-density polyethylene(HDPE) composites prepared by melt blending were studied. The results showed that as the MWNTs concents reach to 3%(mass fraction), the electrical conductivity of the composites changes from insulator to semiconductor, possessing resistivtiy of 1010 Ω·cm. While as the MWNTs concents reach to 5%, the composites become a good conductor. The resistivity-temperature characteristic of the composites exhibits that with the increasing of the temperature, the resistivity of the composites first decreases, while increases abruptly when the temperature approaches melting point(tm) of the matrix, indicating an existence of the negative temperature coefficient(NTC)-positive temperature coefficient(PTC) effect. It should be noted that this phenomenon can not be found in polymer-based composites filled with other conductive particles, such as carbon black, graphite, carbon fiber.

Key words: MWNTs, HDPE, Percolation threshold, Electrical conductivity

中图分类号: 

TrendMD: