橡胶技术网

弹性体
CHINA ELASTOMERICS
2004 Vol.14 No.2 P.19-24

 橡胶技术网

影响水性聚氨酯/丙烯酸酯光固化速度的因素

Study on the curing rate of ultraviolet curable water-borne polyurethane-acrylate

虞浩　 袁荞龙　 王得宁　

摘　要：用甲苯二异氰酸酯、聚己二酸新戊二醇酯、二羟甲基丙酸合成水性聚氨酯,用含双键的甲基丙烯酸羟乙酯封端,制得质量分数为34%的水性聚氨酯/丙烯酸酯水分散液,分别用三种光引发剂固化.结果表明,其中2-羟基-2-甲基-苯丙酮适用于常温固化;1-[4-(2-羟乙氧基-苯基)]-2羟基-2-甲基-丙酮适用于高温条件.当以1-[4-(2-羟乙氧基-苯基)]-2羟基-2-甲基-丙酮为光引发剂,控制光固化温度为80℃,表面光照强度70mW/cm2,引发剂质量分数为4%时,涂膜凝胶化时间为55s,凝胶化程度为 83.4%.此时冲击强度大于50kgcm,吸水率4.69%,附着力1级,耐溶剂性达300次.
关键词：水性聚氨酯/丙烯酸酯;光固化;凝胶
分类号：TQ316.31 　文献标识码：A
文章编号：1005-3174(2004)02-0019-06

基金项目：国家自然科学基金资助(50073005)
作者简介：虞浩(1976-),男,浙江湖州人,博士研究生,主要从事水性聚氨酯方面的研究.王得宁,通讯联系人,E-mail:wangdening@hotmail.com.
作者单位：虞浩（华东理工大学材料科学与工程学院,上海,200237）　
　　　　　袁荞龙（华东理工大学材料科学与工程学院,上海,200237）　
　　　　　王得宁（华东理工大学材料科学与工程学院,上海,200237）　

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收稿日期：2004年1月14日

出版日期：2004年4月25日

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