摘要
以聚醚多元醇PPG1000与MDI-50反应合成的端NCO基聚氨酯(PU)预聚体为复膜胶的主剂;以聚醚多元醇PPG400为反应介质,以总质量分数60%的甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)及丙烯酸羟乙酯(2-HEA)为共聚单体,合成的低黏度共聚物作为固化剂。将主剂与固化剂按异氰酸酯指数1.4配制成聚氨酯-丙烯酸酯复膜胶。考察了NCO含量、固化剂反应温度、丙烯酸酯配比等因素对复膜胶性能的影响。研究表明,主剂NCO基质量分数为16%,固化剂丙烯酸酯共聚物的理论玻璃化转变温度为-10℃、聚合温度为110℃且固化剂总羟值为160 mgKOH/g时,得到的聚氨酯-丙烯酸酯复膜胶用于聚丙烯复合薄膜表现出优异的粘接性能。
NCO-terminated polyurethane prepolymer as the main component was prepared by polyether polyol PPG1000 and MDI-50. Methyl methacrylate （MMA） , butyl acrylate （BA） and hydroxyethyl acrylate （2-HEA） were copolymerized in polyether polyol PPG400, with the mass fraction of polyacrylate resin at 60%, it was used as the curing component. Two-component solvent-free polyurethane-acrylate adhesive for laminate films was prepared with the main component and the curing component by the isocyanate index 1.4. The effects of NCO content, acry- late ratio and reaction temperature in curing component ted. The results showed that, when the NCO content of mer was -10℃, the polymerization temperature of the to OPP/CPP films. preparation on the properties of the adhesive were investiga- main component was 16%, the theory Ts of acrylate copoly- curing component, the laminate adhesive had good adhesion
出处
《聚氨酯工业》
北大核心
2018年第1期41-43,共3页
Polyurethane Industry
关键词
聚氨酯胶黏剂
聚氨酯-丙烯酸酯
复膜胶
无溶剂
polyurethane adhesive
polyurethane-acrylate
lamination adhesive
solvent-free
