摘要
以异佛尔酮二异氰酸酯(IPDI)、新戊二醇(NPG)和季戊四醇三丙烯酸酯(PETA)等为主要原料,采用溶液聚合法合成了PUA(聚氨酯丙烯酸酯)低聚物;然后以此为基体树脂,通过探讨低聚物、活性稀释剂、光引发剂和助剂含量等对涂膜性能的影响,优选出制备UV(紫外光)固化PUA涂料的最佳工艺条件。研究结果表明:当w(PUA低聚物)=57%、w(活性稀释剂)=35%和w(光引发剂)=6%(均相对于涂料质量而言)时,该涂料具有相对较好的综合性能,其UV辐照50 s后即可固化,相应胶膜的硬度为3H、柔韧性为3 mm、附着力为1级且具有较高的耐热性。
With isophorone diisocyanate （ IPDI ）, neopentyl glycol （ NPG ） and pentaerythritol triacrylate （PETA） as main raw materials, the PUA （polyurethane acrylate） oligomer was synthesized by solution polymerization method. Then, with PUA oligomer as matrix resin, the optimal process conditions of preparing UV （ultraviolet）-curable PUA coating were preferred by discussing influences of some factors （such as oligomer contents, reactive diluent contents, photo-initiator contents, and additive contents） on the properties of coatings. The research results showed that the coating had the relatively better combination property because it can be cured after UV irradiating 50 s, and its film hardness was 3H, flexibility was 3 ram, adhesion was 1 level, and heat resistance was higher when mass fractions of PUA oligomer, reactive diluent and photo-initiator were 57%, 35% and 6% respectively in coating.
出处
《中国胶粘剂》
CAS
北大核心
2017年第5期48-51,共4页
China Adhesives
关键词
紫外光固化
聚氨酯丙烯酸酯
涂料
ultraviolet （ UV ） -curable
polyurethane acrylate （PUA）
coating
