文献类型：期刊文献

中文题名：聚氨酯改性不饱和聚酯树脂的反应动力学

英文题名：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：[1]华东理工大学材料科学与工程学院,上海200237

年份：2009

卷号：22

期号：1

起止页码：60

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：聚氨酯;不饱和聚酯;固化反应机理;动力学

外文关键词：polyurethane; unsaturated polyester;curing reaction mechanism; kinetics

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.