以2,4-甲苯二异氰酸酯(TDI)、聚氧化丙烯二醇(PPG-1000)、季戊四醇三丙烯酸酯(PETA)为主要原料合成了聚氨酯丙烯酸酯(PUA),与适量三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)复合制备了辐照固化PUA涂料,采用FT-IR对PUA结构进行表征;考察了R值(-NCO与-OH的物质的量比)和辐射固化方式对涂膜的耐溶剂性、附着力、铅笔硬度、热性能等的影响.结果表明经60Coγ射线辐射固化的涂膜比UV固化的涂膜有更好的耐溶剂性和附着力,但硬度不如UV固化得到的涂膜,涂膜热稳定性好,且随R值增大而提高.当R值为1.8,制备出的PUA树脂经60C0 γ射线辐射固化得到的涂膜具有良好的综合性能.
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