UV光聚合丙烯酸酯胶的性能影响因素研究  

Study on influencing factors for properties of UV photo-polymerized acrylate adhesive

作　　者：马一鸣 钱军[1] 石一峰 MA Yi-ming;QIAN Jun;SHI Yi-feng(School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Hongdingfang Technology Co.,Ltd.,Shanghai 200237,China)

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]上海宏顶房科技有限公司,上海200237

出　　处：《现代化工》2025年第4期208-212,217,共6页Modern Chemical Industry

摘　　要：以丙烯酸异辛酯(2-EHA)和丙烯酸(AA)为单体共聚体系、安息香双甲醚(BDK)及三甲基苯甲酰基-二苯基氧化膦(TPO)为光引发剂,分别在中压汞灯及UV-LED辐照下使单体发生光引发自由基聚合。考察了引发剂、光照能量及光强对光聚合单体转化率的影响。在此基础上,向单体中添加丙烯酸酯类光敏低聚物及多官能团交联单体,进一步探究混合体系聚合反应的转化率及凝胶率的变化规律。制备了在汞灯下光照固化的UV光聚合丙烯酸酯胶,并分析组分变量所产生的力学性能差异。结果表明,对于光聚合,引发剂质量分数(相对于单体质量)存在最佳值,但过量可使转化率下降;在同辐射剂量下,低光强长时间照射可使转化率更高;添加低聚物后,高单体比例下的转化率较高但凝胶率较低。Taking isooctyl acrylate(2-EHA)and acrylic acid(AA)as monomers for co-polymerization,benzoin dimethyl ether(BDK)and trimethylbenzoyl-diphenyl phosphine oxide(TPO)as photo-initiators,the free radical polymerization between monomers is performed,which is photo-induced under the irradiation of medium pressure mercury lamp and UV-LED,respectively.The influences of initiator,illumination energy and light intensity on the conversion of photopolymerization monomers are explored.On this basis,acrylate photosensitive oligomers and multi-functional groups cross-linked monomers are added into the monomers,and the conversion rate and gel rate of photopolymerization of the mixed system are further investigated.UV photo-polymerized acrylate adhesive cured under the irradiation of mercury lamp is prepared,and the changes of mechanical properties,caused by the variation of components,are analyzed.Study results show that as for photopolymerization,there exists the best value for initiator content(relative to monomers mass percentage),and the excess initiator can reduce the conversion rate.Under the same radiation dose,the irradiation for a long time at low light intensity can make the conversion rate higher.With the addition of oligomers,the conversion rate becomes higher but the gel rate becomes lower at a high monomer ratio.

关 键 词：光聚合 光固化 单体转化率 丙烯酸酯压敏胶 力学性能 

分 类 号：TH3[机械工程—机械制造及自动化]