应用双金属氰化物催化剂和不同起始剂合成聚醚酯多元醇  

Application of Double Metal Cyanide Catalyst and Different Initiators to the Synthesis of Polyether-Ester Polyols

作　　者：韩宏伟[1] 朱丙清[1] 顾尧[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《上海塑料》2014年第4期22-25,共4页Shanghai Plastics

摘　　要：环氧丙烷和二氧化碳在双金属氰化物（DMC）催化剂条件下,通过聚合反应合成聚醚酯多元醇.研究了各种类型起始剂对聚合反应的影响.发现起始剂中羟基的质量分数影响催化剂的活性,引发剂中羟基的质量分数越低,使用的催化剂的活性和效率越高.这源于催化剂和环氧丙烷的空位配合效应,且这种效应已经被多种起始剂所证实,而1,3,5-三（2-羟乙基）氰尿酸（THEIC）例外.研究还发现反应产生10％～15％的副产物碳酸丙烯酯.通过红外光谱和核磁共振氢谱确定了聚醚酯共聚物的结构.Polyether-ester polyols were synthesized by polymerization with propylene oxide （PO） and carbon dioxide under the condition that a double metal cyanide （DMC） as catalyst. The effects of the types of initiator on the polymerization were studied. It was found that the mass fraction of hydroxyl of initiator impacted the activity of catalyst. The lower the mass fraction of hydroxyl in the initiator, the higher the activity and efficiency of the catalyst. This is due to the vacancy effect of coordination for catalyst and PO, and the effect had been confirmed by different initiators except tris-（2-hydroxyethyl）-isocyanate （THEIC）. It was also found that 10% to 15% of 1, 2-propanediol cyclic carbonate （propylene carbonate） was obtained as by-product. The structure of polyester-ether copolymer was confirmed by IR and NMR.

关 键 词：合成 聚醚酯多元醇 聚合反应 双金属氰化物催化剂 碳酸丙烯酯 

分 类 号：TQ325[化学工程—合成树脂塑料工业]