摘要： 为了延长二苯甲酮光引发剂的吸收波长，使其与 LED光源更好的匹配，本研究将苄氨基基团引入二苯甲酮结构，合成了 3种 4-双苄胺基二苯甲酮衍生物，其吸收波长延长至 400 nm，与不同波长（ 365~405 nm）的 LED光源能较好的匹配。利用实时红外对其光聚合动力学进行测试，通过电化学测试以及光降解测试等对其作用机理进行研究。结果表明：双苄胺基二苯甲酮衍生物是一类高效的 LED光引发剂，其可作为单组分光引发剂引发 1，6-己二醇二丙烯酸酯发生自由基聚合，双键转化率可达 80%~83%。与碘鎓盐复配，引发阳离子聚合时环氧单体转化率可达 45%，引发自由基 -阳离子混杂光固化时双键转化率为 69%~71%，环氧单体转化率为 58%~61%，在自由基聚合及互穿网络聚合物结构光固化材料制备方面存在潜在应用价值。

关键词: 二苯甲酮衍生物；光引发剂；互穿聚合物网络

Abstract: In order to extend the absorption region of benzophenone derivatives for bettermatching with LED light sources，three 4-bis（benzylamino）benzophenone derivatives weresynthesized by introducing benzylamino group into benzophenone structure. Their absorptionwavelengths were extended to 400 nm，which could well match with LEDs at 365-405 nm. The photopolymerization kinetics was studied by real-time FT-IR，and the photoinitiation mechanismwas clarified by electrochemical tests and photodegradation tests. The results showed that bis（benzylamino）benzophenone derivative was an efficient LED photoinitiator，which could initiate the free radical polymerization of 1，6-hexanediol diacrylate with the double bondconversion of 80%-83%. When combined with iodonium salt，the epoxy monomer conversion reached 45% for cationic polymerization，the double bond and epoxy monomer conversion rates were 69%-71% and 58%-61%，respectively，for radical-cation hybrid photocuring，showing potential application value in the field of free radical polymerization and interpenetrating polymer network photocurable material preparation.

Key words: benzophenone derivatives；photoinitiator；interpenetrating polymer networks 

中图分类号: 

• TQ637. 83