中国塑料 ›› 2011, Vol. 25 ›› Issue (04): 33-37 .DOI: 10.19491/j.issn.1001-9278.2011.04.008

• 材料与性能 • 上一篇    下一篇

环氧树脂/改性纳米炭黑复合材料固化动力学

周红军 尹国强 吴婉霜 葛建芳 林轩   

  1. 仲恺农业工程学院化学化工学院
  • 收稿日期:2010-12-10 修回日期:2010-12-31 出版日期:2011-04-26 发布日期:2011-04-26

Curing Kinetics of Epoxy Resin/Modified Nano-carbon Black Composites

ZHOU Hongjun YIN Guoqiang WU Wanshuang GE Jianfang LIN Xuan   

  • Received:2010-12-10 Revised:2010-12-31 Online:2011-04-26 Published:2011-04-26
  • Contact: ZHOU Hongjun

摘要: 采用差示扫描量热法研究了表面改性纳米炭黑作为填料对环氧树脂非等温固化反应的影响,结果表明,改性纳米炭黑能促进环氧树脂的固化,降低固化反应的起始温度和峰温。运用Ozawa-Flynn-Wall等转化率法研究了复合材料固化活化能与转化率的关系,采用Malek法分析了动力学参数和反应机理。结果表明,固化反应符合两参数(m, n)自催化反应机理,模型预测与实验结果相吻合。

关键词: 转化率, 环氧树脂, 纳米炭黑, 固化动力学, 活化能

Abstract: The influence of modified nano-carbon black on the non-isothermal curing behavior of epoxy resin was studied using differential scanning calorimetry. It showed that the modified nano-carbon black decreased the initial curing and peak temperature of epoxy resin. The dependence of the activation energy on conversion rate was determined using the isoconversional method of Ozawa-Flynn-Wall. The kinetics parameters of the curing process were determined with Malek method. A two-parameter (m, n) autocatalytic model was found to be appropriate to describe the kinetics of the epoxy resin, the predicted results agreed well with the experiments.

Key words: conversion ratio, epoxy resin, nano-carbon black, curing kinetics, activation energy

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