【摘要】 用Photo-DSC(光差热扫描)研究了一种可聚合胺助引发剂乙二醇-3-吗啡啉丙酸酯甲基丙烯酸酯(EGMPM)分别与二苯甲酮(BP)、4-(4-甲苯硫基苯基)苯基甲酮(BMS)、4-氯二苯甲酮(CBP)、4-氯甲基二苯甲酮(CMBP)、4-羟甲基二苯甲酮(HMBP)等二芳酮组成的光引发体系引发以1,6-己二醇二丙烯酸酯(HDDA)为单体的紫外光聚合动力学.考察二芳酮质量分数、聚合温度、光照强度对其光聚合动力学影响,并评价其引发效果;同时计算出了EGMPM/BP引发HDDA聚合体系的活化能.结果表明,二芳酮的质量分数增加时,反应达到最大反应速率的时间减少,单体的转化率也相应增加,单体聚合速率相应增大;相同质量分数(0.1%)的不同二芳酮,BMS体系达到最大反应速率的时间最短,单体转化率也最高;随着温度和光强的增加,单体最终转化率、最大反应速率增大,达到最大反应速率所需的时间减少.更多还原

【Abstract】 The polymerizable amine ethylene glycol 3-morpholine-propionate methacrylate was used as coinitiatos for benzophenone(BP),4-(4-methylbenzisulfide-phenyl)phenyl ketone(BMS),4-chloro-benzophenone(CBP),4-chloromethyl benzophenone(CMBP),4-hydroxymethyl benzophenone(HMBP) photoinitiator system.The photopolymerization kinetics of 1,6-Hexanediol Diacrylate(HDDA) was investigated with Photo-DSC.The result indicated that the structure of diaryl ketone and their mass ratio played an important role on kinetics of photopolymerization rate and monomer conversion,and increasing light intensity and temperature could lead to the increase of photopolymerization rate and the final conversion.The activation energy(E_a) of photopolymerization of HDDA initiated by EGMPM/BP had been calculated.更多还原