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以三乙烯四胺(TETA)、酚醛环氧树脂(F-51)、含硅单环氧化合物(JH-0187)、辛基缩水甘油醚(OGE)等为原料合成新型含硅水性环氧固化剂来改善水性环氧树脂涂膜的综合性能.探讨了反应温度、反应时间对环氧基转化率的影响,以及固化剂中含硅量对涂膜性能的影响.研究结果表明,控制TETA与OGE/JH-0187的反应温度为75℃,反应6.5 h可合成出TETA-OGE/J H-0187加成物,然后与F-51在75℃加成反应6.5h合成出F-51-TETA-OGE/JH-0187加成物;再降温到60℃滴加冰醋酸成盐,减压蒸馏去除溶剂后,加入蒸馏水配置成固含量45%左右的新型水性含硅环氧固化剂;封端反应过程中选择含硅单环氧化合物(JH-0187)占封端所用总单环氧化合物的5%~7.5%时,所合成的含硅水性环氧固化剂所制涂膜综合性能最优异,具有良好的物理力学性能和耐化学品性能.

参考文献

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