文献类型：期刊文献

中文题名：E-51环氧树脂固化反应中动力学转变

英文题名：Shifting of the curing kinetics of E-51 epoxy resin

作者：吴唯[1];刘明昌[1];陈玉[1];浦伟光[1];吴祥[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2011

卷号：28

期号：4

起止页码：1

中文期刊名：复合材料学报

外文期刊名：Acta Materiae Compositae Sinica

收录：CSTPCD;;EI(收录号：20113814343803);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：E-51环氧树脂;等温DSC;固化动力学;n级模型;Kamal模型

外文关键词：E-51 epoxy resin; isothermal DSC; curing kinetics; nth order model; Kamal model

摘要：采用等温DSC法研究了E-51环氧树脂与4,4’-二氨基二苯基砜(DDS)体系的固化反应过程,并与已有固化模型拟合得到了170、180、190、200℃下的等温固化反应动力学的参数,根据决定系数R2确定了适合的固化模型。研究表明:当固化度小于40%时属于Kamal自催化模型;当固化度大于40%时属于n级固化模型,即固化反应由Kamal自催化反应向n级反应转变。
The cure reaction kinetics of E-51 epoxy resin and 4,4＇-diaminodiphenylsulfone（DDS） system was investigated by the isothermal DSC method,and isothermal curing kinetics parameters at 170,180,190,200℃ were obtained through fitting between the experimental data and the curing model.According to the values of coefficient of determination（R2） of the fitted data,a suitable curing reaction kinetic model was determined.The reaction process shows to be dominated by different mechanism at different stages of the E-51/DDS system curing process,when the cure degree is less than 40%,the curing system is Kamal autocatalytic reaction model;when the cure degree is more than 40%,the curing system is nth order reation model,with an initial autocatalytic reaction shifting into an nth order reaction as the reaction proceeding.