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以异佛尔酮二异氰酸酯(IPDI)、二羟甲基丁酸(DMBA)和聚四氢呋喃醚二醇(PTMG)等为主要原料,制得聚氨酯(PU)预聚体;然后将其与丙烯酸羟乙酯(HEA)反应,制得HEA封端的聚氨酯丙烯酸酯(PUA)预聚体;最后在PUA预聚体中加入中和剂等助剂,制备出阴离子改性PUA紫外光(UV)固化胶粘剂。研究结果表明:当w(DMBA中-COOH)=1.2%(相对于PU预聚体质量而言)、中和度=n(中和剂)∶n(DMBA)=80%、以PTMG为多元醇且偶联剂采用预处理法加入时,相应的阴离子改性PUA型UV固化胶粘剂的耐水性、粘接强度和耐久性俱佳。
Polyurethane (PU) prepolymer was prepared with isophorone diisocyanate (IPDI), dimethylolbutyrate (DMBA) and polytetrahydrofuran ether glycol (PTMG) as the main raw materials, Ethyl acrylate (HEA) to prepare a HEA-terminated polyurethane acrylate (PUA) prepolymer; finally adding an auxiliary agent such as neutralizer into the PUA prepolymer to prepare an anion modified PUA UV curing adhesive . The results show that the degree of neutralization = n (neutralizer): n (DMBA) = 80% when w (-COOH) in DMBA = 1.2% with respect to the mass of the PU prepolymer Alcohol and the coupling agent is added by the pretreatment method, the corresponding anionically modified PUA type UV-curing adhesive has excellent water resistance, adhesive strength and durability.