有机锡复合物对IPDI和PPG聚合的催化协同效应探索  

Synergy effect in organo-tin composite catalysts for polymerization of IPDI and PPG

作　　者：廖肃然[1] 魏媛[1] 张玉奇[1] 冯高飞[1] 张孟[1] 

机构地区：[1]河南工程学院材料与化学工程学院,河南郑州450007

出　　处：《河南工程学院学报（自然科学版）》2013年第1期28-31,共4页Journal of Henan University of Engineering：Natural Science Edition

基　　金：河南省基础与前沿计划(072300420110);河南工程学院科技创新团队计划(2009IRTHNIE05)

摘　　要：采用化学反滴定法,60℃下测试了有机锡复合物对异佛尔酮二异氰酸酯(IPDI)和聚氧化丙烯二醇(PPG)聚合的反应速率常数,发现复合物的催化作用具有协同效应.利用FTIR测试了不同组成复合物羰基和羧基负离子的红外特征吸收,结果显示复合物中Sn与—COO存在共价键和离子键结合两种形式,催化活性随着共价结合比例的升高而提高.Using organo-tin composite as catalyst at 60 ℃, the rate constants of isophorone diisocyanate（IPDI） and polypropylene glycol（PPG） were investigated by chemical titration. It was found that the organo-tin composite for the reaction of IPDI and PPG exhib- ited synergy effect. According to the infrared characteristic absorption of the carbonyl and carboxyl anion, there were two types bonding （ covalent and ionic bond） between Sn and - COO. The catalytic activity improved with the increase of the fraction of covalent bonding in the organo-tin composite.

关 键 词：异佛尔酮二异氰酸酯 聚氧化丙烯二醇 有机锡复合物 协同效应 

分 类 号：O631.5[理学—高分子化学]