微球型聚丙烯酸酯类压敏胶的制备与表征  

Preparation and Characterization of Microsphere Polyacrylic Ester Pressure Sensitive Adhesive

作　　者：叶娟[1] 吴明华[2] 汪澜[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [2]浙江理工大学生态染整技术教育部工程研究中心,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2013年第2期144-149,共6页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金(51203140)

摘　　要：以丙烯酸异辛酯(2-EHA)、甲基丙烯酸甲酯(MMA)、丙烯酸(AA)和丙烯酸2-羟乙酯(2-HEA)为聚合单体,过氧化苯甲酰(BPO)和偶氮二异丁腈(AIBN)(质量比1∶1)的复合物为引发剂,聚乙烯醇-1788(PVA-1788)为主分散剂,采用悬浮聚合法合成微球型聚丙烯酸酯类压敏胶。研究了聚合温度、引发剂用量对单体转化率和聚合凝聚率的影响,探讨了聚合单体对压敏胶粘接性能的影响,确定了微球型聚丙烯酸酯类压敏胶悬浮聚合最佳工艺:聚合温度85℃,引发剂用量0.6%(相对单体总质量),2-EHA、MMA、AA和2-HEA用量分别为聚合单体总质量的80%、4%、2%和4%。此时悬浮聚合单体转化率较高,聚合凝聚率较低,所合成的微球型聚丙烯酸酯类压敏胶微球平均粒径为52.77μm,具有良好的反复粘贴性。This paper synthesizes microsphere polyacrylic ester pressure sensitive adhesive with suspension polymerization method with 2-ethylhexyl acrylate（2-EHA）, methyl methacrylate（MMA）, acrylic acid（AA） and acrylic acid 2-HEA as polymerized monomers, the compound of benzoyl peroxide（BPO） and azodiisohutyronitrile（AIBN） （mass ratio 1 ： 1） as initiator and PVA-1788 as the main dispersing agent; studies the influence of polymerization temperature and mass fraction of initiator on monomer conversion rate and polymerization agglomerate rate; discusses the influence of polymerized monomers on adhesive property of pressure sensitive adhesive and determines the optimal process of suspension polymerization of microsphere polyacrylic ester pressure sensitive adhesive： polymerization temperature 85℃, mass fraction of initiator 0. 6%（relative total mass of monomer）, mass fraction of 2-EHA, MMA, AA and 2-HEA are 80%, 4%, 2% and 4% of total mass of polymerized monomer respectively. At this time, the monomer conversion rate of suspension polymerization is the highest; the polymerization agglomerate rate is the lowest, the average grain size of polyacrylic ester pressure .sensitive adhesive microsphere synthesized is 52. 77 μm, which has a good property of repeated paste.

关 键 词：压敏胶 悬浮聚合 反复粘贴 聚丙烯酸酯微球 

分 类 号：TQ347.5[化学工程—化纤工业]