论文部分内容阅读
以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、甲基丙烯酸缩水甘油酯(GMA)和丙烯酸羟乙酯(HEA)为共聚单体,并以二缩三丙二醇二丙烯酸酯(TPGDA)为交联剂、十二烷基硫醇(NDM)为链转移剂和乙酸乙酯为极性溶剂,采用核/壳溶液聚合法合成了侧链含C=C的丙烯酸酯预聚体;然后以此为基体树脂、丙烯酸异冰片酯(IBOA)和三羟甲基丙烷二丙烯酸酯(TMPTA)为活性稀释剂、651为自由基光引发剂和碘鎓盐为阳离子光引发剂,制备了UV固化胶粘剂。研究结果表明:合成丙烯酸酯预聚体的最佳工艺条件是m(BA)∶m(MMA)∶m(GMA)∶m(TPGDA)∶m(HEA)=20∶60∶10∶4∶6、n(TPGDA)∶n(NDM)=2∶2、w(热引发剂)=3%和w(乙酸乙酯)≥70%(均相对于共聚单体总质量而言);自由基/阳离子混杂双重UV固化胶粘剂比单一自由基UV固化胶粘剂具有更大的附着力和耐酸碱性,此时前者的最佳配方中w(预聚体)=55%、w(651或碘鎓盐)=5%、w(IBOA)=15%、w(TMPTA)=12%和w(GMA)=8%(均相对于胶粘剂总物料质量而言)。
The copolymers were prepared by copolymerization of methyl methacrylate (MMA), butyl acrylate (BA), glycidyl methacrylate (GMA) and hydroxyethyl acrylate (HEA) with tripropylene glycol diacrylate ) As crosslinking agent, dodecyl mercaptan (NDM) as chain transfer agent and ethyl acetate as polar solvent, the acrylic / acrylate prepolymer with C = C was synthesized by the core / shell solution polymerization method. Then, using this base resin, IBOA and TMPTA as reactive diluent, 651 as free radical photoinitiator and iodonium salt as cationic photoinitiator, UV curing adhesive. The results show that the best conditions for the synthesis of acrylate prepolymer are m (BA): m (MMA): m (GMA): m (TPGDA): m (HEA) = 20:60:10:4:6 , N (TPGDA): n (NDM) = 2: 2, w (thermal initiator) = 3% and w (ethylacetate)> 70% (all relative to the total comonomer mass); radical / Cationic hybrid dual UV curing adhesive has more adhesion and acid and alkali resistance than the single free radical UV curing adhesive. In this case, w (prepolymer) = 55%, w (651 or iodonium salt = 5%, w (IBOA) = 15%, w (TMPTA) = 12% and w (GMA) = 8% (all relative to the total mass of the adhesive).