高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (3): 583.

• 研究快报 • 上一篇    下一篇

CB填充聚合物导电复合体系熔体聚集态结构演化

吴刚,郑强   

  1. 浙江大学高分子科学与工程学系,杭州 310027
  • 收稿日期:2005-09-30 出版日期:2006-03-10 发布日期:2006-03-10
  • 通讯作者: 郑强(1960年出生),男,博士, 教授,博士生导师, 主要从事聚合物流变学研究. E-mail: zhengqiang@zju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50133020,50125312)资助.

Developement of Melt Agglomerate Structure in Conductive Polymer Composites Filled with Carbon Black

WU Gang,ZHENG Qiang*   

  1. Department of Polymer Science & Engineering,Hangzhou 310027,China
  • Received:2005-09-30 Online:2006-03-10 Published:2006-03-10

摘要:

本文试图在低频率(ω)及小应变条件下,追踪粒子填充导电复合材料微观结构的变化与发展,并通过修正的KerneNielson 方程对材料的聚集态结构进行研究.

关键词: 炭黑填充导电复合体系; NTC行为; 动态粘弹性

Abstract:

The study on the correlation between time dependence of electrical resistivity and dynamic storage modulus for carbon black(CB) filled polymer composites was carried out. With the increase of the dynamic storage modulus(G′) as well as the normalized dynamic storage modulus(G′c /G′p),the volume resistivity(ρ) deceases with the  increase of annealing time beyond the Tm of the composites. It is believed that this phenomenon can be used for examining the development of agglomerate structure of filled composites and illustrating the micro-mechanism of the NTC behavior. It is assumed that melting treatment to CB filled composites results in a higher modulus and lower resistivity due to more even local dispersion of the particles and formation of perfect CB network structure within the matrix.

Key words: null

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