采用异佛尔酮二异氰酸酯(IPDI)、聚乙二醇600(PEG600)、2,2-二羟甲基丙酸(DMPA)为主要原料合成水性聚氨酯分散体,然后分别通过甲基丙烯酸-2-羟乙酯(HEMA)、二甲基丙烯酸甘油酯(GMDA)和季戊四醇三丙烯酸酯(PETA)引入碳碳双键,制备了2,4,6官能度的3种聚氨酯丙烯酸酯(PUA)水性UV树脂(UV-WPUA).利用二正丁胺法测定合成过程中异氰酸根(-NCO)含量的变化,通过红外光谱(FT-IR)表征了合成产物的结构,树脂的紫外光固化结果表明4官能度的树脂具有最高的转化率(80％);随着官能度的提高,吸水率降低而光泽度逐步提高,其中4官能度的树脂力学性能更为优良.
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