Electrical conductivity of epoxy resin-carbon black-silica nanocomposites: Effect of silica concentration and analysis of polymer curing reaction by FTIR

被引：33
|
作者：
Zhang, Wei
Blackburn, Richard S. [1 ]
Dehghani-Sanij, Abbas
机构：
[1] Univ Leeds, Ctr Techn Textiles, Green Chem Grp, Leeds LS2 9JT, W Yorkshire, England
[2] Univ Leeds, Sch Mech Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 10期
关键词：
polymer matrix composites; nanocomposite; electrical conductivity of polymers; semiconductors; scanning electron microscopy (SEM);
D O I：
10.1016/j.scriptamat.2007.07.030
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Electrical properties of epoxy resin-carbon black-silica nanocomposites are determined by conductive paths imparted by carbon black and influenced by a "network" of silica. Fractures are observed in nanocomposites with a high solids content, contributing to low conductivity. At these concentrations, the space occupied by the silica and carbon black particles causes the distance between reactants to be relatively large and the extent of cross-linking in the nucleophilic addition reaction between epoxy resin polymer and isophorone diisocyanate is reduced. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：949 / 952
页数：4
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