高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (6): 1170.

• 研究论文 • 上一篇    下一篇

聚氯乙烯/炭黑导电复合体系的压阻行为

徐文武1, 宋义虎1, 周剑锋1, 郑强1, 章明秋2   

  1. 1. 浙江大学高分子科学与工程学系, 杭州310027;
    2. 中山大学材料科学研究所, 广州510275
  • 收稿日期:2004-06-21 出版日期:2005-06-10 发布日期:2005-06-10
  • 通讯作者: 郑　强(1960年出生),男,博士,教授,博士生导师,主要从事高分子材料及聚合物流变学研究.E-mail:zhengqiang@zju.edu.cn E-mail:zhengqiang@zju.edu.cn
  • 基金资助:

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

Piezoresistance Behavior of Polyvinyl Chloride/Carbon Black Conductive Composites

XU Wen-Wu1, SONG Yi-Hu1, ZHOU Jian-Feng1, ZHENG Qiang1, ZHANG Ming-Qiu2   

  1. 1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;
    2. Materials Science Institude, Zhongshan University, Guangzhou 510275, China
  • Received:2004-06-21 Online:2005-06-10 Published:2005-06-10

PDF (PC)

被引次数

23

摘要： 研究了聚氯乙烯/炭黑(PVC/CB)导电复合体系在单轴压力作用下的压阻行为,发现CB含量对电阻-机械响应具有显著的影响.当CB含量低于渗流阈值时,PVC/CB复合材料呈现PPC效应;而高于渗流阈值时,呈现NPC效应.在渗流阈值附近,单轴压缩可诱导NPC效应的出现,或者抑制PPC效应.

关键词: 聚氯乙烯, 炭黑, 压阻行为, 单轴压缩-解压缩, 唯象模型

Abstract: The piezoresistive behavior of polyvinyl chloride/carbon black(PVC/CB) conductive composites subjected to uniaxial compression-decompression cycles was studied. The composites exhibited a significant piezoresistance, when CB mass fraction w was located in the vicinity of the percolation threshold wc. The composites displayed a positive pressure coefficient(PPC) effect at w<wc and negative pressure coefficient(NPC) effect at w>wc. Uniaxial compression might facilitate the NPC effect or weaken the PPC effect when w was located in the vicinity of wc.

Key words: Poly(vinyl chloride), Carbon black, Piezoresistance behavior, Uniaxial compression-decompression, Phenomenological model

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