摘要
文章采用非等温DSC法研究了酚醛/环氧树脂/TA催化剂体系热固化动力学:Friedman法确定了固化动力学参数,动力学模拟建立了固化机理模型函数。结果表明:该体系放热曲线存在一个放热峰;可用Bna反应模式机理函数描述热固化反应过程,反应模式为枝状成核的自催化反应。由模型函数得出的反应时间与反应程度关系发现:温度为160℃,反应时间为30m in时,该体系反应程度达到了90%,为固化工艺条件的选择提供了依据。
Non-isothermal analysis kinetics method （ Friedman method） and linear heating-up data of DSC is used to study the mechanism model of Phenolic Resin/Epoxy Resin/TA by thermal curing. From the results of thermal analysis kinetics, there is only one peak in PF/E-44/TA. The curing mechanism of PF/E-44/TA can be well fitted to Bna model of the mechanism. From the curve of conversion of time and temperature, it shows that when temperature holds constancy at 160℃ for 30 minutes, the conversion of PF/E-44/TA reaches 90%. The result of the thermal analysis is an effective way to study mechanism and to determine the curing processing of thermal plastics.
出处
《四川理工学院学报（自然科学版）》
CAS
2009年第5期73-75,共3页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
关键词
非等温固化
固化动力学
酚醛树脂
环氧树脂
non-isothermal curing
curing mechanism
phenolic resin
epoxy resin
