Abstract: The curing process and kinetics of Uv-curable hybrid coating based on glycidyl methacrylate (GMA)/polyurethane-acrylate(PUA)/nano-SiO₂ were investigated by FT-IR, DSC, and DMA. The results indicated that the three components showed good compatibility. The curing reaction could be described by a two-parameter autocatalytic Sestak - Berggren(S-B) model. When the content of nano-SiO₂  was 10%, the T_g, reached the highest, which was increased by 7. 3°C compared to the pure system.

Key words: Uv-curable coating, glycidyl methacrylate, polyurethane-acrylate, nano-SiO₂, curing kinetics

摘要： 采用了示差扫描量热仪（DSC）、动态力学谱仪（DMA）、傅里叶红外光谱仪（FT-IR）研究了 GMA-PUA-纳米 SiO₂复合涂料的非等温固化反应及动态力学性能。结果表明：该体系具有较好的相容性，固化过程可以用自催化Sestak-Berggren（S-B）动力模型描述。当改性纳米 SiO₂ 质量分数为 10%时，玻璃化温度达到最大值，提高了7.3℃。

关键词: UV－光固化涂料, 甲基丙烯酸缩水甘油酯, 聚氨酯丙烯酸酯, 纳米 SiO₂, 固化动力学