以甲苯二异氰酸酯(TDI-80)、聚醚二元醇(N220)、环氧树脂(E20)和甲基丙烯酸甲酯(MMA)等为原料,通过原位聚合,制备了水性聚氨酯-环氧树脂-丙烯酸(WPUEA)复合分散液.研究了体系NCO/OH总摩尔比和TMP、E20、DMPA及MMA用量对WPUEA分散液及其胶膜性能的影响.结果表明,当NCO/OH总摩尔比为1.2～1.5,TMP用量为2%～3%,E20用量为4%～6%,DMPA用量为6%～9%,MMA用量为20%～30%时,分散液储存期超过10个月,冻融循环大于5,其涂膜硬度大于0.70,拉伸强度大于10 MPa,耐水性、耐酸碱性、耐溶剂性等较水性聚氨酯(WPU)有明显改善.
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