摘要
以多元醇、异氰酸酯、含羟基丙烯酸酯和光引发剂等为原料,制备了PET（聚酯）基材粘接用光/湿双固化PU（聚氨酯）-PUA（聚氨酯丙烯酸酯）型反应性HMA（热熔胶）。研究结果表明：该HMA中同时含有可光固化基团（C=C）和可湿固化基团（-NCO）;当n（C=C）∶n（-NCO）=20∶80、w（复合光引发剂）=1.5%~2.0%和引入甲基丙烯酸羟乙酯（HEMA）时,相应HMA具有较高的初始强度和最终强度;光/湿双固化HMA的透明度高于湿固化HMA,说明UV固化是增加光/湿双固化HMA透明度的主要原因。
With polyol,isocyanate,hydroxyl-containing acrylate and photoinitiator as raw materials,an UV/moisture dual curable PU-PUA（polyurethane-polyurethane acrylate） type reactive HMA（hot melt adhesive） was made for bonding PET（polyester） base material.The research results showed that the HMA had both UV curable group（C=C） and moisture curable group（-NCO）.The corresponding HMA had higher initial strength and ultimate strength when molar ratio of n（C=C）∶n（-NCO） was 20∶80,mass fraction of composite photoinitiator was 1.5%-2.0%,and hydroxylethyl methacrylate（HEMA） was introduced into system.The UV curable was main reason of enhancing transparency of UV/moisture dual curable HMA because transparency of UV/moisture dual curable HMA was higher than that of moisture curable HMA.
出处
《中国胶粘剂》
CAS
北大核心
2012年第4期25-28,共4页
China Adhesives
基金
江苏高校优势学科建设工程资助项目
关键词
光/湿双固化
聚氨酯
聚氨酯丙烯酸酯
热熔胶
UV/moisture dual curable
polyurethane
polyurethane acrylate（PUA）
hot melt adhesive（HMA）
