聚氨酯改性丙烯酸酯单体的制备及其醋丙共聚乳液胶粘剂的性能研究  

Preparation of polyurethane modified acrylate monomer and performance of its vinyl acetate-acrylate copolymer emulsion adhesive

作　　者：关涛 陈昌主 李元璐 邱元斌 林海峰 潘汉杰 Guan Tao;Chen Changzhu;Li Yuanlu;Qiu Yuanbin;Lin Haifeng;Pan Hanjie(Key Laboratory of Fujian Architectural Coatings Enterprise,SKSHU Paint Co.,Ltd.,Putian 351100,Fujian,China)

机构地区：[1]福建省建筑涂料企业重点实验室,三棵树涂料股份有限公司,福建莆田351100

出　　处：《中国胶粘剂》2023年第2期8-13,共6页China Adhesives

基　　金：福建省区域项目(2019H4007)。

摘　　要：以丙烯酸羟乙酯(HEA)、甲苯-2,4-二异氰酸酯(TDI)、2-乙基己醇为原料,制备了一种聚氨酯改性丙烯酸酯(PUA)杂化单体材料。对比研究了PUA单体与常规单体如丙烯酸(AA)、丙烯酰胺(AM)、丙烯酸羟丙酯(HPA)、醋酸乙烯酯(VAc)、丙烯酸异辛酯(2-EHA)等参与醋酸乙烯-丙烯酸丁酯混合单体共聚制备的醋丙乳液胶膜的耐水性、湿态剪切强度以及干态胶合强度。研究结果表明:AA、AM、HPA等亲水性强、极性高的单体共聚制备的醋丙乳液胶膜具有较好的干强度,但耐水性、湿强度差;VAc、2-EHA等单体共聚制备的乳液胶膜的耐水性相对较好,但干强度、湿膜强度较差。相比于上述常规单体,PUA单体参与共聚制备的醋丙乳液胶膜在桦木块上的湿态剪切强度以及在桦木块、铝条基材上粘接的干态强度方面拥有良好的兼顾效果,有望作为一种新的功能单体材料用于高性能聚醋酸乙烯酯乳液胶粘剂的制备。A kind of polyurethane modified acrylate(PUA)hybrid monomer material was prepared using hydroxyethyl acrylate(HEA),toluene diisocyanate(TDI),and 2-ethylhexanol as raw materials.The water resistance,wet shear strength and dry bonding strength of vinyl acetate-acrylate latex film prepared by PUA monomer and conventional monomers such as acrylic acid(AA),acrylamide(AM),hydroxypropyl acrylate(HPA),vinyl acetate(VAc),2-ethylhexyl acrylate(2-EHA),which involved in the copolymerization of vinyl acetate-butyl acetate mixed monomers,were compared.The research results showed that the vinyl acetate-acrylate emulsion film prepared by copolymerization of monomers with strong hydrophilicity and high polarity,such as AA,AM and HPA,had good dry strength,but poor water resistance and wet strength.The water resistance of the emulsion film prepared by copolymerization of VAc,2-EHA and other monomers was relatively good,but the dry strength and wet film strength were poor.Compared with the conventional monomers mentioned above,the vinyl acetate-butyl acetate emulsion film prepared by copolymerization of PUA monomer had good balance of wet shear strength on birch block and dry strength on birch block and aluminum strip substrate,which was expected to be used as a new functional monomer for the preparation of high-performance polyvinyl acetate emulsion adhesive.

关 键 词：PUA杂化单体 乳液胶粘剂 聚醋酸乙烯酯 耐水 

分 类 号：TQ437[化学工程]