自交联水性PVAc乳液胶粘剂的合成及耐水性研究  

Study on synthesis and water resistance of self-crosslinking waterborne PVAc emulsion adhesive

作　　者：贝文凯 张一甫 Bei Wenkai;Zhang Yifu(College of Resources,Environment and Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学资源环境与材料学院

出　　处：《中国胶粘剂》2019年第12期5-9,共5页China Adhesives

基　　金：广西科技重大专项（桂科AA16380051）

摘　　要：以醋酸乙烯为原料,DAAM(双丙酮丙烯酰胺)及ADH(己二酰肼)为自交联单体,通过乳液聚合制备了自交联PVAc(聚醋酸乙烯酯)乳液。研究结果表明:当w(DAAM)=2.0%时,胶粘剂湿状剪切强度由未加DAAM改性的1.06 MPa提高至1.36 MPa,胶膜吸水率由改性前的52.36%降至26.81%。红外表征说明聚合物发生了交联反应;透射电镜表征说明合成乳液粒子分布均匀,呈球状或椭球状结构。With vinyl acetate as the raw material,DAAM(diacetone acrylamide)and ADH(adipic hydrazide)as self-crosslinking monomers,the self-crosslinking PVAc(polyvinyl acetate)emulsion was prepared by emulsion polymerization.The research results showed that the wet shear strength of the adhesive increased from1.06 MPa without DAAM to 1.36 MPa,and the water absorption of the film decreased from 52.36%to 26.81%when w(DAAM)=2.0%.The infrared characterization indicated that the crosslinking reaction occurred in the polymer.The transmission electron microscopy showed that the particles of synthesized emulsion were distributed uniformly and had the spherical or ellipsoidal structure.

关 键 词：乳液聚合 聚醋酸乙烯酯 自交联 双丙酮丙烯酰胺 

分 类 号：TQ433.433[化学工程]