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涂料工业  2011 

低温快固化丙烯酸聚氨酯涂料的发展现状

Keywords: 低温快固化,汽车修补涂料,双组分聚氨酯,羟基丙烯酸树脂

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Abstract:

?从丙烯酸聚氨酯涂料的固化反应机理出发,系统分析了树脂、固化剂、催化剂和环境因素对丙烯酸聚氨酯涂层干燥速度的影响,重点讨论了羟基单体的种类和用量、亚胺结构的引入、玻璃化转变温度、相对分子质量及其分布、酸值及分子链结构等因素对树脂反应活性的影响。通过对目前低温快固化涂料研究中存在的问题的分析,指出精确控制树脂分子结构是实现修补涂料低温快固化的有效途径。

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