响应面法研究苯酚封闭聚氨酯预聚体  

Study of Phenol-Blocked Polyurethane Prepolymers by Response Surface Methodology

作　　者：刘旭东 温勇[1] 张文艺 彭彬 王超 LIU Xudong;WEN Yong;ZHANG Wenyi;PENG Bin;WANG Chao(School of Architecture and Civil Engineering, Xinjiang University, Urumqi 830047, Xinjiang, China)

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047

出　　处：《聚氨酯工业》2018年第6期5-8,共4页Polyurethane Industry

摘　　要：以聚丙二醇、二苯基甲烷二异氰酸酯合成聚氨酯预聚体,并用响应面法研究了苯酚封闭预聚体,拟合出方程,确定了封闭最佳工艺条件为封闭温度76℃、苯酚/异氰酸酯基摩尔比值1. 5、每100 g预聚体催化剂二月桂酸二丁基锡0. 9 g以及封闭反应时间120 min。最后用红外光谱对预聚体制备及封闭机理进行了表征。The polyurethane prepolymers were synthesized by polyoxypropylene glycol and diphenylmethane diisocyanate.The synthesis of phenol-blacked prepolymers were studied by response surface methodology.The equations were fitted out and the optimum conditions for blocking were determined as below:the blocking temperature was76℃,molar ratios was1.5,the amount of catalyst dibutyltin dilaurate per100g of prepolymer was0.9g,blocking time was120min.Finally,the preparation and blocking mechanism of the prepolymer was characterized by infrared spectroscopy.

关 键 词：聚氨酯预聚体 响应面 封闭反应 红外光谱 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]