CAJ | 학술논문

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。
채용원위취합법,제비득도계렬배양수지(E-44)개성적무용제음리자취안지/병희산지(WPUA)복합유액。통과부리협홍외광보(FT-IR)、열실중분석(TGA)、내개질성급역학성능측시토론료E-44용량대 WPUA 유액급기막성능적영향。FT-IR 표명,E-44중적-OH 화배양기도삼여료반응。TGA표명,E-44적가입명현개선료도막적열은정성。령외당W(E-44)=7.6%시,도막흡수솔위6.13%,흡을순솔위49.78%,정현량호내개질성；차도막경도가체2 H,부착력체도0급,내충격성합격。
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.