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以甲基丙烯酸甲酯(MMA)为硬单体,丙烯酸丁酯(BA)和丙烯酸乙基己酯(EHA)为软单体,丙烯酸羟乙酯(HEA)、丙烯酸羟丙酯(HPA)及丙烯酸(AA)为功能单体,乙烯基三乙氧基硅烷(A-151)为交联单体,过硫酸铵(APS)为引发剂,采用种子乳液聚合法合成了BOPP(双向拉伸聚丙烯)薄膜用丙烯酸酯乳液型PSA(压敏胶)。研究结果表明:当Tg(玻璃化转变温度)为-30℃、w(APS)=0.6%、w(复合乳化剂)=2.0%、w(AA)=3%、w(HPA)=3%、w(HEA)=3.0%和w(A-151)=0.5%(均相对于单体总质量而言)时,乳液型PSA的综合性能相对最好,其平均粒径为98 nm、稳定性良好和胶膜吸水率相对较低,并且该乳液型PSA用于BOPP薄膜粘接时具有优异的粘接性能。
With methyl methacrylate (MMA) as a hard monomer, butyl acrylate (BA) and ethylhexyl acrylate (EHA) as soft monomers, hydroxyethyl acrylate (HEA), hydroxypropyl acrylate (HPA) (AA) as functional monomer, vinyltriethoxysilane (A-151) as cross-linking monomer and ammonium persulfate as initiator, BOPP was synthesized by seed emulsion polymerization Acrylate) Film Acrylate Emulsion PSA (Pressure Sensitive Adhesive). The results show that when the glass transition temperature is -30 ℃, w (APS) = 0.6%, w (composite emulsifier) = 2.0%, w (AA) = 3%, w (HPA) = 3% , W (HEA) = 3.0% and w (A-151) = 0.5% (all relative to the total monomer mass), the overall performance of the emulsion PSA is relatively best with an average particle size of 98 nm Good and relatively low water absorption of the film, and the emulsion type PSA has excellent adhesive properties for BOPP film bonding.