巯基丙烯酸酯树脂的合成及自引发光聚合反应

摘要

4,4'-Thiodibenzenethiolhexanediol diacrylate(TBHDA) was synthesized via the "thiol-ene" reaction between 4,4'-thiodibenzenethiol and 1,6-hexanediol diacrylate. For comparison, the thiophenol modified di-trimethylolpropane tetraaerylate ( TP-DiTMP4A) and hyperbranched acrylate(TP-P1000A) were also synthesized. The molecular structures of the oilgomers were characterized with 1H NMR and FTIR spectroscopies. The self-initiated photopolymerization behavior was investigated by photo-DSC measurements. The results show that TBHDA possesses the best self-initiated photopolymerization performance, indicating that the thioether linkage and acrylate double bond concentration both play key role in the self-initiated photopolymerization.%以4,4′-二巯基苯硫醚和1,6-己二醇二丙烯酸酯通过“巯基-双键”反应合成了4,4 ′-二巯基苯硫醚己酯二丙烯酸酯(TBHDA)及苯硫酚改性双三羟甲基丙烷四丙烯酸酯(TP-DiTMP4A)和超支化丙烯酸酯预聚物(TP-P1000As).采用1H NMR和FTIR谱对产物结构进行了表征.采用Photo-DSC方法对产物的自引发光聚合反应活性进行了研究,结果表明,TBHDA本体及与EB605的混合体系均显示出较高的自引发光聚合反应活性,而TP-DiTMP4A和TP-P1000As的自引发光聚合反应活性较低；相对TP-P1000As而言,TP-DiTMP4A具有较高的光聚合反应活性是由于其较高的硫醚键和丙烯酸酯双键浓度所致.