端羟基聚醚酯多元醇的研制  

Study on Novel Polyetherester Polyol

作　　者：董旭[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》2011年第4期16-19,共4页Shanghai Plastics

基　　金：国家自然科学基金资助(GrantNo.50973049)

摘　　要：利用DMC催化PO,邻苯二甲酸酐(PhA)与CO2三元共聚合成端羟基聚醚酯多元醇,并研究了PhA对聚合反应的影响规律。实验发现:PhA的引入可提高催化剂的催化活性,缩短反应时间;适量的PhA可减少副产物环碳酸酯的生成;另外,PhA的引入会使聚合产物的黏度明显增加,使得浇注聚氨酯材料时可操作性变差;聚合产物的相对分子质量分布较PO与CO2共聚物的变窄;合成较高相对分子质量的聚醚酯多元醇时(Mn>4 000),PhA的质量不要超过PO质量的15%。Hydroxyl-terminated polyetherester polyols were synthesized by copolymerization of PO,PhA and CO2 catalyzed by DMC catalyst.The effects of PhA on the polymerization were studied.It was found that the introduction of PhA can improve the catalytic activity of the catalyst and shorten the polymerization time.The cyclic carbonate could be reduced while adding in appropriate amount of PhA.In addition,it increased the viscosity of products obviously and then caused the operability of polyurethane PhA materials poor.The relative molecular mass distribution was narrower compared with PO-CO2 copolymer,but still relatively wide.The mass ratio of PhA and PO was mostly no more than 15% when synthesizing high relative molecular mass polyetherester polyols,and can be increased with the relatine molecular mass decreased.

关 键 词：聚醚酯多元醇 三元共聚 DMC催化剂 

分 类 号：O621.3[理学—有机化学]