多巯基树脂固化聚氨酯丙烯酸树脂的研究  

Study of multi-thiol resin curing polyurethane acrylate

作　　者：毛俊轩[1] 马金鑫[1] 王跃川[1] 

机构地区：[1]四川大学高分子科学与工程学院高分子材料工程国家重点实验室,四川成都610065

出　　处：《热固性树脂》2012年第5期6-9,共4页Thermosetting Resin

基　　金：广东省教育部产学研结合专项资金(2010B090400055)资助

摘　　要：采用凝胶时间测试和实时红外光谱(RT-IR)研究了不同固化剂、稀释剂及促进剂用量对聚氨酯丙烯酸树脂(PUA)/稀释剂二缩三丙二醇二丙烯酸酯(TPGDA)/自制多巯基树脂固化剂(T-41)/促进剂1,8-二氮杂环[5,4,0]-十一烯(DBU)体系固化速度的影响及固化过程中转化率与反应时间的对应关系。结果表明,该体系中,TPG-DA用量存在一最佳值,使体系凝胶时间最短。凝胶时间随烯烃双键/巯基比例的增加而缩短,随促进剂用量的增加而缩短。通过改变各组分配比,体系的固化时间可控制在数分钟到数十分钟之间,实现PUA的快速固化。The effects of dosages of curing agent , dilluent and accelerant on the curing rate and the relationship between conversion rate and reaction time during curing process of the polyurethane acrylate （PUA）/dilluent tripro- pylene glycol diacrylate （TPGDA）/self - made multi - thiol resin （ T - 41 ）/accelerant 1,8 - diheterocyclic [ 5,4, 0 ] - undecylene （DBU） system were investigated by the testing of gel time and real time FT - IR. The results showed that an optimum amount of TPGDA was existed and the gel time of PUA/TPGDA/T-41/DBU curing sys- tem would be the shortest. With the increasing of ratio of alkene double bond of PUA to thiol and the increasing of accelerator amount, the gel time was decreased. By changing the ratio of each componet, the curing time could be controlled from a few minutes to tens of minutes and PUA could be cured rapidly at room temperature.

关 键 词：多巯基树脂 聚氨酯丙烯酸树酯 二缩三丙二醇二丙烯酸酯 1 8-二氮杂环[5 4 0]-十一烯 快速固化 凝胶时间 实时红外光谱 

分 类 号：TQ433.43[化学工程]