萘酰亚胺基硫醚型光引发剂的合成与性能研究  

Synthesis and Property of the Naphthalimide-based Thioether Photoinitiator

作　　者：李雪纯 于佳 孙芳 LI Xue-chun;YU Jia;SUN Fang(School of Chemical Engineering,Beijing University of Chemical Technology,Beijing100029,China;Liming Chemical Research and Design Institute Co.,Ltd,Luoyang Henan 471000,China)

机构地区：[1]北京化工大学化学学院,北京100029 [2]黎明化工研究设计院有限责任公司,河南洛阳471000

出　　处：《粘接》2020年第9期1-5,24,共6页Adhesion

基　　金：国家重点研发计划(2017YFB0307800);国家自然科学基金(51273014);有机化学本科育人团队资助。

摘　　要：以4-溴-1,8-萘二甲酸酐和4-甲氧基苄基硫醇为原料合成了一种单组份萘酰亚胺基硫醚型光引发剂NPS。研究了NPS的紫外-可见光吸收性能、光解机制和引发光聚合能力。结果表明,NPS在常用的LED光源发射波长下具有优异的光吸收性能,在384nm处有最大吸收峰,该吸收峰强度随着光辐照时间的延长逐渐降低。在405nm LED照射下,NPS分子通过苄硫基的C-S键断裂和夺氢反应两个过程产生具有引发活性的对甲氧基苄基自由基、取代的萘硫自由基和α-酰亚胺基烷基自由基。NPS光引发剂可以较好的引发丙烯酸酯类单体的自由基聚合,并对氧阻聚有一定的抑制作用。A mono-component naphthalimide-based thioether photoinitiator(NPS)was synthesized with 4-bromo-1,8-naphthalic anhydride and 4-methoxybenzyl mercaptan as raw materials.The properties of UV/vis absorption and degradation,the photolysis mechanism and the photopolymerization ability of NPS were investigated.The results show that NPS has an excellent absorption at different LED emission wavelengths and a maximum absorption peak at 384 nm,and the absorption peak intensity gradually decreases with the prolonging of the light irradiation time.Under LED irradiation at 405 nm,NPS can generate p-methoxybenzyl radical,substituted naphthalene sulfur radical andα-imide alkyl radical through C-S bond cleavage of benzylthio group and H-abstraction reaction.NPS can efficiently initiate free radical photopolymerization of the acrylate monomer and has certain anti-oxygen inhibition ability.

关 键 词：光引发剂 LED光聚合 萘酰亚胺 芳硫醚 

分 类 号：TQ5724.4[化学工程—精细化工] TQ630.1