环氧基多元醇改性水性聚氨酯的合成与性能研究  

Synthesis and Performance Research of Waterborne Polyurethane Modified with Epoxy Resin-based Polyol

作　　者：王亚鑫 汪辉辉 饶兴兴 雒新亮 史立平 谭伟民 郁飞 Wang Yaxin;Wang Huihui;Rao Xingxing;Luo Xinliang;Shi Liping;Tan Weimin;Yu Fei(CNOOC Changzhou Paint&Coating Industry Research Institute Co.,Ltd.,Changzhou,Jiangsu 213016,China)

机构地区：[1]中海油常州涂料化工研究院有限公司,江苏常州213016

出　　处：《涂料工业》2022年第7期54-59,67,共7页Paint & Coatings Industry

基　　金：国家重点研发计划(2020YFE0100100)。

摘　　要：为提高水性聚氨酯的耐化学介质性能,使用顺酐(MA)与聚己内酯二醇反应生成顺酐聚己内酯二醇单酯(MP),之后再与环氧树脂(E-51)反应,合成环氧基多元醇(EMP),最后以此为原料与聚己内酯二醇复配,制得环氧基多元醇改性水性聚氨酯(EWPU)。研究了不同反应条件及EMP用量对改性水性聚氨酯及涂膜性能的影响,通过红外光谱、粒径分析和热重分析对产物及涂膜进行了测试及表征。结果表明:通过在聚氨酯分子结构中引入具有柔性结构的环氧基多元醇,与未改性WPU相比,所制备出的环氧基多元醇改性水性聚氨酯的耐介质性能明显提高,涂膜具有优异的柔韧性、附着力、硬度及耐热性等性能。In order to improve the chemical resistance of waterborne polyurethanes.The maleic anhydride polycaprolactone glycol monoester(MP)produced from maleic anhydride(MA)and polycaprolactone glycol was used to react with epoxy resin(E-51)to prepare the epoxy resin-based polyol.Then,the waterborne polyurethane modified with epoxy resin-based polyol was synthesized by the epoxy resin-based polyol,polycaprolactone glycol,and isophorone diisocyanate(IPDI).The influence of reaction conditions and EMP dosage on the synthesis of the epoxy resin-based polyol modified waterborne polyurethane and coating properties was investigated.The chemical structure and particle size of the products and heat resistance of the coating were characterized using fourier transform infrared spectroscopy,particle size analyzer and thermogravimetric analysis.As the results shown,compared with unmodified WPU,the prepared epoxy resin-based polyol modified waterborne polyurethane indicated excellent coating performance,including chemical resistance,flexibility,adhesion,hardness,and heat resistance.

关 键 词：环氧基多元醇 聚己内酯二醇 水性聚氨酯 耐介质性能 

分 类 号：TQ630.43[化学工程—精细化工]