中文摘要：

采用原位聚合法,制备得到系列环氧树脂（E-44）改性的无溶剂阴离子聚氨酯/丙烯酸酯（WPUA）复合乳液。通过傅里叶红外光谱（FT-IR）、热失重分析（TGA）、耐介质性及力学性能测试讨论了E-44用量对 WPUA 乳液及其膜性能的影响。FT-IR 表明,E-44中的-OH 和环氧基都参与了反应。TGA表明,E-44的加入明显改善了涂膜的热稳定性。另外当W（E-44）=7.6%时,涂膜吸水率为6.13%,吸乙醇率为49.78%,呈现良好耐介质性；且涂膜硬度可达2 H,附着力达到0级,耐冲击性合格。

英文摘要：

A series of solvent-free anion polyurethane/acrylate （WPUA）dispersions modified with epoxy resin （E-44）were successfully synthesized by in-situ emulsion polymerization.Effects of E-44 content on appear-ance,centrifugal stability of the dispersions were studied,as well as thermal properties,water and alcohol re-sistance,pencil hardness,adhesion and impact strength of the films.FT-IR demonstrated the hydroxyl and ep-oxy groups were reacted with isocyanate groups.TGA results indicated WPUA with the incorporation of E-44 had relatively higher thermostability.Additionally,the best properties of WPUA films was obtained at 7.6%E-44 content,while the water and alcohol resistance were 6.13% and 49.78%,respectively.The pencil hard-ness of film was 2 H,the adhesion reached 0 grade,and the impact strength met requirements.