摘要
以甲苯二异氰酸酯(TDI)、聚氧化丙烯三醇和甲基丙烯酸羟乙酯(HEMA)为主要单体,1,6-己二醇二丙烯酸酯(HDDA)为活性稀释剂,二月桂酸二丁基锡(DBTDL)为催化剂,合成了UV固化涂料制备用聚氨酯丙烯酸酯(PUA)低聚物。研究结果表明:当n(TDI)∶n(聚氧化丙烯三醇)∶n(HEMA)=3.08∶1∶3时,PUA低聚物的Mr(相对分子质量)比较理想;当固化时间为4 min、w(PUA低聚物)=87%、w(光引发剂Irgacure184)=5%、w(HDDA)=4%和w(其他助剂)=3%(均相对于总物料质量而言)时,UV固化涂料的综合性能相对最好,其胶膜硬度为2H、附着力为1级、耐酸碱性大于72 h和Tg(玻璃化转变温度)为38.9℃。
With toluene diisocyanate （TDI）, polyoxypropylene trio1 and hydroxyethyl methacrylate （HEMA） as main monomers, 1,6-hexanediol diacrylate （HDDA） as active diluent, dibutyhin dilaurate （DBTDL） as catalyst, a polyurethane acrylate （PUA） oligomer for preparing UV-curable coating was synthesized. The research results showed that the PUA oligomer had the more ideal M, （relative molecular mass） when molar ratio of n （TDI） ：n （polyoxypropylene trio1） ： n （HEMA） was 3.08： 1： 3. The UV-curable coating had the relatively best combination property because its film hardness was 2H, adhesion was level 1, acid-alkali resistance was more than 72 h, and Tg（glass-transition temperature） was 38.9 ℃ when curing time was 4 rain, mass fractions of PUA oligomer, light initiator（ Irgacure 184）, HDDA and other auxiliaries were 87%, 5%, 4%, 3% respectively in total materiels.
出处
《中国胶粘剂》
CAS
北大核心
2014年第6期43-46,共4页
China Adhesives
基金
国家自然科学基金资助项目(21204072)
关键词
聚氨酯丙烯酸酯
UV固化涂料
光引发剂
活性稀释单体
polyurethane acrylate （PUA）
UV-curable coating
light initiator
active diluent monomer
