聚丙烯酸甲酯-醋酸乙烯酯水性复膜胶的研制  

Study on preparing PMMA-VAc aqueous laminating adhesive

作　　者：杨舜伊[1] 袁纯红 Yang Shunyi;Yuan Chunhong(Kunming Vocational and Technical College of Industry, Kunming 650302, Chin)

机构地区：[1]昆明工业职业技术学院,云南昆明650302

出　　处：《中国胶粘剂》2017年第12期30-33,共4页China Adhesives

摘　　要：以MA(丙烯酸甲酯)和VAc(醋酸乙烯酯)为原料、DHPA(1,2-二羟基-3-丙烯酸钠)为亲水扩链剂,采用预乳化半连续乳液聚合法合成了一种水性复膜胶。研究结果表明:随着VAc含量的不断增加,复膜胶的持粘力、黏度和乳液粒径均随之增大,剥离强度呈先升后降态势。当w(VAc)=20%、w(DHPA)=4%[均相对于聚丙烯酸甲酯(PMAC)质量而言]时,该复膜胶的黏度为27 m Pa·s、剥离强度为2.7 N/15 mm、初粘力为16(球号)且持粘力为54 h,并且该复膜胶在热失重15%时的热分解温度、玻璃化转变温度分别为240、-26.2℃。With MA（methyl acrylate）and VAc（vinyl acetate）as raw materials,DHPA（1,2-dihydroxy-3-sodiumacrylate）as hydrophilic chain extender,an aqueous laminating adhesive was prepared by pre-emulsifying semi-continuous emulsion polymerization. The research results showed that the holding tack,viscosity,and emulsionparticle size were increased,but peeling strength had the trend of rise-fall with increasing VAc content. Theviscosity of laminating adhesive was 27 m Pa · s,peeling strength was 2.7 N/15 mm,initial tack was 16（ballnumber）,and holding tack was 54 h,and its thermal decomposition temperature and glass transition temperature at15% thermal weightlessness were 240 ℃ and-26.2 ℃ respectively when mass fractions of VAc and DHPA were20% and 4% respectively in polymethyl acrylate（PMAC）.

关 键 词：水性复膜胶 丙烯酸甲酯 醋酸乙烯酯 1 2-二羟基-3-丙烯酸钠 

分 类 号：TQ433.436[化学工程] TQ433.433