聚氨酯改性不饱和聚酯树脂的反应动力学  

Kinetics of the Curing of Polyurethane Modified Unsaturated Polyester Resin

作　　者：叶蓓[1] 周权[1] 宋宁[1] 倪礼忠[1] 

机构地区：[1]华东理工大学材料科学与工程学院,上海200237

出　　处：《功能高分子学报》2009年第1期60-63,共4页Journal of Functional Polymers

摘　　要：通过差示扫描量热法(DSC)和傅里叶红外光谱(FT-IR)分析,探讨了聚氨酯改性不饱和聚酯树脂(UPR)体系反应特征及固化反应动力学。结果表明:体系中聚氨酯网络的形成远快于UPR网络的形成。UPR和聚氨酯改性UPR体系的表观活化能分别为58.0 kJ/mol和64.8 kJ/mol,改性后体系的活化能并无较大变化;反应的级数分别为0.90和0.91。The curing characteristic and kinetics analysis of polyurethane modified unsatura-ted polyester are studied by DSC and FT-IR. The network of polyurethane is formed much faster than that of unsatura- ted polyester. The apparent activation energy of UPR is 58.0 kJ/mol, while that of polyurethane modified UPR is 64.8 kJ/mol. There is no significant difference between the two systems. The reaction order of UPR is 0.90, while that of polyurethane modified UPR is 0.91.

关 键 词：聚氨酯 不饱和聚酯 固化反应机理 动力学 

分 类 号：O63[理学—高分子化学]