OALib Journal期刊
ISSN: 2333-9721
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聚醚/聚酯混合型水性uv固化pua合成研究
Keywords: 紫外光固化,水性聚氨酯丙烯酸酯,季戊四醇三丙烯酸酯,异佛尔酮二异氰酸酯
Abstract:
?为提高紫外光(uv)固化水性聚氨酯丙烯酸酯(wpua)的综合性能,用异佛尔酮二异氰酸酯(ipdi)、聚醚/聚酯二元醇混合软段、季戊四醇三丙烯酸酯(peta)等原料合成不同官能度封端剂封端的uv固化wpua,并采用环氧树脂(e-44)进行接枝改性。实验结果表明:采用聚醚/聚酯混合二元醇作为软段,能有效解决涂膜uv固化前粘性问题,能忍受一定的机械应力,可以固化前堆放,给涂装施工带来极大方便;uv固化后赋予涂膜良好的耐水性、耐溶剂等性能;环氧树脂(e-44)改性能提高产物涂膜的综合性能。
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