烷氧基硅烷与聚乙二醇反应合成硅基聚醚(SPE);SPE与六亚甲基-1,6-二异氰酸酯(HDI)三聚体反应合成了一系列水性硅基多异氰酸酯固化剂(WSiP).发现WSiP中硅氧烷含量的增加能够降低产物黏度和提高NCO含量,并且能够提高双组分涂膜硬度和光泽;另外,随着SPE含量增加,双组分涂膜光泽和耐水性均有所提高;用红外光谱仪和热失重仪测试了双组分涂膜结构和耐热性能.结果表明,WSiP与水性丙烯酸树脂配制的双组分水性聚氨酯涂料硬度达到4H,清漆光泽123°～126°,耐水48 h,10％热失重温度为285℃.
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