中国胶粘剂

采用丙烯酸丁酯（BA）、丙烯酸异辛酯（2-EHA）、丙烯酸（AA）、马来酸二丁酯（DBM）和甲基丙烯酸甲酯（MMA）为单体，烯丙基醚磺酸盐为乳化剂，过硫酸钾（KPS）-亚硫酸氢钠氧化还原体系为引发剂，碳酸氢钠为pH调节剂，同时添加复合型润湿剂、缔合型增稠剂、中和剂和松香树脂增黏乳液等，制备了一款高剥离力、抗反弹、低气味和低挥发性有机物（VOC）汽车内饰用乳液型丙烯酸酯压敏胶。采用单因素试验法探讨了反应型乳化剂的用量、引发剂的用量、功能单体的用量、DBM单体的用量和水性松香增黏乳液的用量对乳液型压敏胶180°剥离力和应用性能的影响。研究结果表明：乳化剂用量为单体总质量的2.0%，引发剂用量为单体总质量的0.7%，功能单体用量为单体总质量的2.5%,DBM用量为单体总质量的2.0%，水性松香增黏乳液加入量为丙烯酸酯乳液质量的10%，乳液型压敏胶的性能相对最优。反应型乳化剂的用量影响乳液聚合过程以及丙烯酸酯聚合物的分子量和分布，功能单体的用量影响压敏胶的180°剥离力和乳液聚合的稳定性，适量的DBM单体可以提升乳液型压敏胶的初粘力和抗反弹性能，水性松香增黏乳液可以显著提升乳液型压敏胶的180°剥离力但影响抗反弹性能。制备的胶带产品气味在2.5～3.5级之间，抗反弹性能为A+，乳液型压敏胶满足汽车内饰要求的低气味、低VOC、低释放性气味物质（FOG）的行业标准及应用性能要求。

Using butyl acrylate(BA),2-ethylhexyl acrylate(2-EHA),acrylic acid(AA),dibutyl maleate(DBM),and methyl methacrylate(MMA) as monomers,allyl ether sulfonate as emulsifier,potassium persulfate(KPS)-sodium bisulfite redox system as initiator,and sodium bicarbonate as pH regulator,and adding composite wetting agent,associative thickener,neutralizer and rosin resin tackifying emulsion,a kind of emulsion-type acrylate pressure sensitive adhesive with high peel strength,anti-rebound,low odor and low volatile organic compound(VOC) for automotive interior trim was prepared. The effects of the amount of reactive emulsifier,initiator,functional monomer,DBM monomer and waterborne rosin tackifying emulsion on the 180° peel strength and application performance of emulsion-type pressure sensitive adhesive were investigated by single factor test.The research results showed that,the amount of emulsifier was 2.0% of the total mass of monomer,the amount of initiator was 0.7% of the total mass of monomer,the amount of functional monomer was 2.5% of the total mass of monomer,the amount of DBM was 2.0% of the total mass of monomer,the amount of water-borne rosin tackifying emulsion was 10% of the mass of acrylate emulsion,the performance of emulsion-type pressure sensitive adhesive was relatively optimal.The amount of reactive emulsifier affected the emulsion polymerization process as well as the molecular weight and distribution of acrylate polymer.The amount of functional monomer affected the 180° peel force of pressure sensitive adhesive and the stability of emulsion polymerization.An appropriate amount of DBM monomer could improve the initial tack and anti rebound performance of emulsion-type pressure sensitive adhesive.The waterborne rosin tackifying emulsion could significantly improve the 180° peel force of emulsion-type pressure sensitive adhesive,but affected the anti rebound performance.The smell of the prepared tape product was between 2.5 and 3.5 levels,and the anti rebound performance was A+.The emulsion-type pressure sensitive adhesive met the industry standard and application performance requirements of low odor,low VOC,and low release odor substance(FOG) required for automotive interior trim.