高性能航空复合材料用环氧树脂的固化反应动力学
Curing Reaction Kinetics of Epoxy Resins for High Performance Aerospace Composites
冯敏 1田铁兵 1王晋 1王萌 1赵中杰1
作者信息
- 1. 中航复合材料有限责任公司,北京 101300
- 折叠
摘要
针对高性能航空复合材料用环氧树脂的固化反应,采用非等温差示扫描量热仪(DSC)对其进行研究.通过模拟n级反应动力学模型,利用Kissinger方程、Arrihenius公式等以及特征温度-升温速率外推法,计算出该固化体系的表观活化能Ea、指前因子A和固化反应级数n等动力学参数以及最佳固化温度.结果表明,环氧树脂的固化起始温度Ti 为142.40℃,固化温度Tp为228.26℃,后固化温度Tf为267.67℃,固化时间为32 min.
Abstract
The curing reaction of epoxy resins for high performance aerospace composites was studied by non-isothermal DSC(differential scanning calorimetry).By simulating the n-order reaction kinetics model,the Kissin-ger model,Arrihenius model and the characteristic temperature-warming rate extrapolation method were used to calculate the apparent activation energy Ea,pre-exponential factor A,solidification reaction order n and the optimal curing temperature.The results show that the initial temperature(Ti)is 142.40℃,the peak temperature(Tp)is 228.26℃,the finishing temperature(Tf)is 267.67℃,and the curing time is 32 min.
关键词
非等温DSC/固化动力学模型/环氧树脂Key words
non-isothermal DSC/curing reaction kinetics model/epoxy resin引用本文复制引用
基金项目
国家重点研发计划资助(2022YFB3709100)
出版年
2024
NETL
NSTL
万方数据