摘要
制备了系列低玻璃化温度(Tg<-60℃)的紫外光固化光纤内层涂料。以异佛尔酮二异氰酸酯(IPDI)、聚丙二醇(PPG)(Mn=4000,6000和8000)和丙烯酸羟乙酯(HEA)合成3种聚氨酯丙烯酸酯(PUA)预聚物,使用FT-IR和DSC进行了表征。结果显示PUA预聚物的Tg分别为-60.2℃、-62.0℃和-62.6℃。向Tg为-62.6℃的PUA中加入单体丙烯酸异辛酯(EHA)和乙氧基乙氧基乙基丙烯酸酯(EOEOEA),所得涂料的Tg分别为-64.8℃和-64.2℃。选择复合光引发剂2-羟基-2-甲基-1-苯基丙酮(Darocur 1173)/二苯甲酮(BP)/N,N-二甲基苯甲酸甲酯(EDAB),涂料固化速度>180m/min。
Three Polyurethane acrylate (PUA) oligomers were synthesized by IPDI, PPG (Mn=4000, 6000, 8000 g/tool) and HEA, FT-IR results showed that these compounds could be easily synthesized by controlling the reaction conditions. DSC results indicated that the glass transition temperatures of the PUAs were -60.6℃, -62. 0℃ and -62.6℃, respectively. Adding EHA and EOEOEA to PUA oligomer (Tg =-62. 6℃) lowered glass transition temperature coatings to -64. 8℃ and -64.2℃. Optimum curing rate of 180m/rain was obtained using Darocur1173, BP and EDAB as photoinitiators.
出处
《化工新型材料》
CAS
CSCD
北大核心
2007年第7期52-54,共3页
New Chemical Materials
基金
北京市自然科学基金(2062016)
关键词
光纤涂料
紫外光固化
玻璃化温度
聚氨酯丙烯酸酯
optical fiber coating, UV-curable, glass transition temperature, polyurethane acrylate
作者简介
邵周田(1982-),男,硕士生,主要从事紫外光固化胶粘剂/涂料的研发。