燕民翔,朱延安,瞿金清

• 1:华南理工大学化学与化工学院
• 2:嘉宝莉化工集团股份有限公司

摘要(Abstract)：

采用二羟甲基丙酸(DMPA)和聚氧乙烯醚(YmerTM N120)为复合亲水单体,以聚醛树脂(A81)、聚醚二元醇(N220)和异佛尔酮二异氰酸酯(IPDI)为原料合成了聚醛改性羧酸/非离子型聚氨酯水分散体(PUD),研究了DMPA/N120质量比、A81添加量和NCO/OH摩尔比对PUD及涂膜性能的影响。研究发现添加A81可提高PUD涂膜的硬度、光泽和耐化学品性,特别是耐醇性能;当A81添加量为5%,DMPA与N120质量比0.4,NCO与OH摩尔比为1.5时合成的PUD涂膜具有较好的耐水、耐化学品性和较高的硬度。热重分析(TGA)发现A81改性PUD涂膜具有优异的热稳定性。与未改性的PUD对比发现,经A81改性后的PUD拥有良好的综合性能。

关键词(KeyWords)： 聚醛树脂;聚氨酯水分散体;耐化学品性;羧酸/非离子型

Abstract:

Keywords:

基金项目(Foundation): 广东省省部产学研结合重大专项(2012A090300004)

作者(Author): 燕民翔,朱延安,瞿金清

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