摘要
采用程序升温 DSC法研究了含环氧基丙烯酸酯共聚物 /癸二酸体系的交联反应动力学 ,结合 Ozawa方程推导出该交联体系的交联动力学方程 ,并计算了交联反应的活化能。结果表明 ,程序升温 DSC法可较好地克服恒温DSC法谱图中因晶态交联剂的熔融峰与交联反应放热峰相互重叠而引起的交联程度难以精确计算的问题 ,同时也解决了因常规交联反应动力学方程较复杂所带来的诸多问题。
The crosslinking kinetics of the thermosetting system combined from copolyacrylate containing epoxy group and decanedioic acid was studied by temperature programming method on DSC; the crosslinking kinetic equation was deduced from Ozawa equation. The activity energy of crosslinking reaction was also calculated. All the results show that the exothermal peak of crosslinking reaction can be separated clearly from the melting peak of decanedioic acid by the method of temperature programming on DSC. This study will supply a new and accurate method to test the crosslinking kinetics or crosslinking degree of thermosetting system containing epoxy groups.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2000年第6期169-171,共3页
Polymer Materials Science & Engineering
关键词
环氧基丙烯酸酯
共聚物
程序升温DSC法
交联
copolyacrylate
epoxy group
temperature programming DSC
kinetic equation of crosslinking
activity energy
