摘要： 以丙烯海松酸为原料合成松香基聚酯(APAPE)，将聚酯与异佛尔酮二异氰酸酯(IPDI)、 季戊四醇三丙烯酸酯(PETA)反应制备松香基聚氨酯丙烯酸酯(APAPUA)。 采用傅里叶红外光谱仪 (FT-IR)和热分析仪(TGA)对预聚物及涂膜进行表征，测试了不同固化条件下 APAPUA 固化膜的附着力、硬度及其他力学性能。 结果表明:在光-热固化下，以三羟甲基丙烷三丙烯酸酯(TMPTA)为活性稀释剂且用量为 20%，以 N75 为固化剂，在 80 °C 条件下热固化 2 h，得到的涂膜的铅笔硬度达到4H，附着力为 0 级，力学性能及耐热性优良。

关键词: UV 固化, 光-热双固化, 聚氨酯丙烯酸酯, 性能

Abstract: Dual curable rosin-based polyurethane acrylate resins were prepared by rosinbased polyester (APAPE) derived from acrylpimaric acid (APA), isophorone diisocyanate(IPDI) and pentaerythritol triacrylate ( PETA). The structure of the products and heat resistance of the films was characterized by Fourier transform infrared (FT-IR) and thermogravimetric analysis(TGA). The adhesion and hardness and other mechanical properties of the cured APAPUA film were also tested. The results showed that the APAPUA composition at the presence of trimethylol propane triacrylate(TMPTA)20% as active diluent and N75 as curing agent was UV-heat cured ( baking at 80 ℃ for 2 h)to give a film showing the pencil hardness 4H, adhesion grade 0, good mechanical properties and heat resistance.

Key words: UV curing, Uv-heat curing, polyurethane acrylate, property