多元醇的结构舒展性与多异氰酸酯预聚物的游离TDI  

EXTENSION PROPERTY OF STRUCTURES OF POLYOLS AND FREE TDI OF POLYISOCYANATE PREPOLYMER

作　　者：方旭升[1] 张彩珍[1] 

机构地区：[1]北方涂料工业研究设计院厦门公司,361004

出　　处：《现代涂料与涂装》2004年第5期5-7,11,共4页Modern Paint & Finishing

摘　　要：阐述了“多元醇的结构舒展性”概念的含义,讨论了多元醇的结构舒展性对预聚物的游离TDI(f-TDI)的影响,作为典型事例分析,提出多元醇结构的极不舒展正是S685固化剂f-TDI居高不下的重要原因。The “Extension property of structures of polyols' is defined. The influence of extension property of structures of polyols on free TDI of polyisocyanate prepolymer is discussed. It is indicated that poor extension property of structures of polyols is the main cause for the higher free TDI of S685 polyisocyanate prepolymer.

关 键 词：多异氰酸酯预聚物 TDI 氨基甲酸酯化反应 羟基位阻 多元醇 结构舒展性 乙二醇 S685固化剂 

分 类 号：TQ630.1[化学工程—精细化工]