橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2004 Vol.27 No.5 P.292-296

 橡胶技术网

Effect of dosage of dimethylol propionic acid on properties of emulsion of polyurethane-acrylate anionomer

Yu Hao（School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　
Yuan Qiaolong（School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　
Wang Dening（School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　

Abstract：The emulsion of polyurethane-acrylate(PUA) anionomer was prepared by using tolylene diisocyanate,polydimethyltrimethylene glycol adipate( PDGA), dimethylol propionic acid (DMPA) and 2-hydroxyethyl methacrylate. The effects of dosage of DMPA on properties of PUA anionomer were discussed. The results showed that the average particles size of PUA anionomer decreased,the particles size distribution narrowed,the viscosity increased and the stability was improved with the increase of the mole ratio of DMPA/PDGA,but too much DMPA resulted in the agglomeration of very small particles with high surface energy,and caused negative effect on the above properties.
Keywords：dimethylol propionic acid; polyurethane-acrylate anionomer; emulsion polymerization; average particle size; particle size distribution; viscosity

二羟甲基丙酸用量对聚氨酯-丙烯酸酯离聚物乳液性能的影响

虞浩　 袁荞龙　 王得宁　

摘　要：用甲苯二异氰酸酯、聚己二酸新戊二醇酯多元醇(PDGA)、二羟甲基丙酸(DMPA)和甲基丙烯酸-2-羟乙酯合成了聚氨酯-丙烯酸酯(PUA)离聚物乳液,讨论了DMPA用量对其性能的影响.结果表明,当DMPA与PDGA的摩尔比增大时,PUA离聚物乳液的平均粒径减小,粒径分布变窄,黏度增大,稳定性提高,但DMPA用量过高时,会使具有高表面能的小粒子团聚,从而给PUA离聚物的乳液性能带来负面影响.
关键词：二羟甲基丙酸;聚氨酯-丙烯酸酯离聚物;乳液聚合;平均粒径;粒径分布;黏度
CLC Number：TQ331.4+99　Document ID：A
Article ID：1000-1255(2004)05-0292-05
Foundation Item：Supported by National Natural Science Foundation(50073005).
Author Resume：Yu Hao,Ph D candidate.Wang Dening,To whom all correspondence should be addressed.
　　　　　虞浩（华东理工大学,材料科学与工程学院,上海,200237）　
　　　　　袁荞龙（华东理工大学,材料科学与工程学院,上海,200237）　
　　　　　王得宁（华东理工大学,材料科学与工程学院,上海,200237）　

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Manuscript Received：2004年1月18日

Published：2004年9月15日