用环氧丙烯酸酯(EA)、羟基硅油合成了环氧/有机硅改性水性光固化聚氨酯乳液(WPU)；研究了EA、羟基硅油、亲水扩链剂二羟甲基丁酸(DMBA)的用量,中和度和硅烷偶联剂的添加量对乳液和涂膜性能的影响.用红外光谱和接触角测量仪对树脂进行表征.结果表明:通过EA、羟基硅油改性的水性光固化聚氨酯涂膜的硬度高、附着力强、耐水性较好,克服了未改性水性光固化聚氨酯的缺点.当EA用量为4％、羟基硅油为2％、DMBA为8％、中和度为80％、硅烷偶联剂的添加量为1％时,水性光固化聚氨酯乳液的综合性能较好,树脂接触角大大提高.
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