中国胶粘剂

以酸酐和二元醇为单体制备了不饱和聚酯，后加入活性稀释剂甲基丙烯酸六氟丁酯，制备了含氟不饱和聚酯（F-UPR）。将F-UPR与双酚A型环氧树脂（ER）按照不同的质量比进行复合，以二苯基碘六氟磷酸盐为光引发剂，以异丙基硫杂酮为光敏剂，进行固化成膜，得到ER/F-UPR复合体系。对其光固化过程及机理进行分析，对不同质量配比的ER/F-UPR涂膜的凝胶率、力学性能、动态力学性能及固化膜的微观结构进行测试与表征。研究结果表明：ER/F-UPR复合体系进行了自由基和阳离子协同反应的固化过程；随着环氧树脂含量的增加，ER/F-UPR复合涂膜的附着力和硬度增加，冲击强度先增后降；当m(ER/F)∶m(UPR)=3∶1时，固化膜具有较佳的力学性能，凝胶率最大为93.2%，玻璃化转变温度为79.8℃，涂膜上表面对水接触角为98.8°；微观结构分析表明，氟元素在固化膜的上表面富集，环氧树脂则在固化膜的底面富集，形成自分层涂层。

Fluorine-containing unsaturated polyester(F-UPR)was prepared by using anhydride and diol as monomers and adding hexafluorobutyl methacrylate as active diluent. F-UPR was compounded with bisphenol A epoxy resin(ER)according to different mass ratios,diphenyl iodine hexafluorophosphate was used as photoinitiator,isopropyl thioxanthone was used as photosensitizer,and then the ER/F-UPR composite system was obtained by forming a film. The photocuring process and mechanism were analyzed,and the gelation rate,mechanical properties,dynamic mechanical properties of ER/F-UPR coating film and microstructure of cured film with different mass ratios were tested and characterized. The research results showed that ER/F-UPR composite system underwent the curing process of synergistic reaction of free radical and cation. With the increase of epoxy resin content,the adhesion and hardness of ER/F-UPR composite coating film increased,and the impact strength increased first and then decreased. When m(ER/F)∶m(UPR)=3∶1,the cured film had relatively good mechanical properties,the maximum gelation rate was 93.2%,the glass transition temperature was 79.8 ℃,and the water contact angle of the upper surface of coating film was 98.8°. Microstructure analysis showed that fluorine was enriched on the upper surface of the cured film,while epoxy resin was enriched on the bottom surface of the cured film,which formed the self-stratification coating.