异氰酸酯改性不饱和聚酯树脂的研究

CHINA ELASTOMERICS(2004)

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Abstract
用异氰酸酯类与蓖麻油改性的端羟基不饱和聚酯树脂(UPR)进行共混.结果表明,三羟甲基丙烷甲苯二异氰酸酯/UPR的质量比例在0.5~0.9之间力学性能最优;聚酯的双键密度增加,抗拉强度增大,断裂伸长率减小;不同种类的异氰酸酯同端羟基不饱和聚酯树脂共混, 力学性能差别比较大;促进剂N,N-二甲基苯胺含量对树脂凝胶时间影响比较大,而二丁基月桂酸锡含量对树脂凝胶时间影响不明显.
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