反应型乳化剂对保护膜用丙烯酸酯乳液型压敏胶性能的影响  

Effect of Reactive Emulsifier on the Pressure Sensitive Adhesive of Acrylic Emulsion for Protective Film

作　　者：刘继承[1] 王锋[1] 胡剑青[1] 涂伟萍[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《精细化工》2009年第5期502-505,共4页Fine Chemicals

摘　　要：采用预乳化法制备了丙烯酸酯压敏胶乳液,探讨了不同乳化剂体系对压敏胶物理性能的影响。FTIR测试表明,反应型乳化剂参与了反应;TEM测试显示,反应型乳化剂体系所得乳液粒径小,分布均匀。实验结果表明:当w(复合乳化剂)=3%,m(ANPEO10)∶m(DNS-458)∶m(DNS-501)=1.5∶1.1∶0.4时,所得乳液的固体分质量分数为48.03%,单体转化率达到97.66%,乳液黏度为38.8 s,平均粒径为238 nm,压敏胶的初粘力能吸住8号钢球,持黏性大于24 h,180°剥离强度达到0.304 N/mm。贴在不锈钢表面的保护膜经80℃烘烤24 h后,不锈钢表面无残胶和雾影。The pressure-sensitive adhesive （PSA） of acrylic emulsion were synthesized by pre-emulsion polymerization, and the effects of different kinds of emulsifier systems on the physical properties of PSA were discussed. The emulsion and their films were characterized by FTIR and TEM. The results show that reactive emulsifier is effectively involved in the copolymerization, and the synthesized polymer emulsion has smaller particle sizes and good distribution. When w （ compound emulsifiers ） = 3% （based on total monomers） ,and m（ANPEO10） ：m（ DNS - 458 ） ：m（ DNS - 501 ） = 1.5：1.1：0.4, the solid mass fraction was 48.03% ,the monomer conversion was 97.66% ,the emulsion viscosity was just 38.8 s, the average emulsion particle size was 238 nm, the initial adhesion of PSA could adhere to the 8th number stell ball ,the holding adhesion was more than 24 hours ,and the 180° pelling strength was 0. 304 N/mm. When the protective film was attached to the stainless steel surface, which had baken for 24 h at 80℃, there were no residual adhesion and mist pollution on the surface.

关 键 词：反应型乳化剂 保护膜 压敏胶 丙烯酸酯乳液 

分 类 号：TQ423.92[化学工程]