采用γ-氨丙基三乙氧基硅烷(KH-550)和环氧树脂(E-44)复合改性磺酸型水性聚氨酯,制得硬度高、耐热性和耐化学品性能优异的水性聚氨酯涂料.通过衰减全反射红外分析了聚氨酯的结构,用DSC、TG等对涂膜进行了表征.考察了KH-550及E-44含量对涂膜硬度、耐化学品性及耐热性的影响,结果表明:KH-550和E-44的加入均明显改善了涂膜的硬度和耐化学品性,当KH-550含量为6％ ～ 8％,E-44含量8％～10％时,涂膜的综合性能最优.
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