自交联型涂料印花黏合剂的制备与性能研究

以甲基丙烯酸甲酯(MMA)为硬单体、丙烯酸丁酯(BA)为软单体、丙烯酸(AA)为功能单体、N-羟甲基丙烯酰胺(NMA)为交联单体、过硫酸铵(APS)为引发剂、十二烷基硫酸钠(SDS)和壬基酚聚氧乙烯醚(NP-40)为复合乳化剂,采用预乳化半连续乳液聚合法合成了自交联型丙烯酸酯涂料印花黏合剂。研究结果表明:当m(MMA)∶m(BA)=0.38∶1、w(NMA)=3%、w(AA)=2.5%～3.0%、w(复合乳化剂)=3.0%且m(SDS)∶m(NP-40)=1∶(1.5~2.0)、w(APS)=0.8%、75~80℃聚合3 h和85℃保温1 h时,相应乳液的综合性能相对最好。

Study on preparation and properties of self-crosslinking coating printing adhesive

With methyl methacrylate(MMA) as hard monomer,butyl acrylic(BA) as soft monomer,acrylic acid(AA) as functional monomer,N-methylol acrylamide(NMA) as crosslinker monomer,ammonium persul-fate(APS) as initiator,sodium dodecyl sulfate(SDS) and nonylphenol ethoxylates(NP-40) as composite emulsifier,an acrylate coating printing adhesive with self-crosslinking was synthesized by pre-emulsified semi-continuous emulsion polymerization.The research results showed that the corresponding emulsion had reversely optimal combination property when mass ratios of m(MMA)∶m(BA) and m(SDS)∶m(NP-40) were 0.38∶1 and 1∶(1.5-2.0) respectively,mass fractions of NMA,AA,composite emulsifier and APS were 3%,2.5%-3.0%,3.0% and 0.8% respectively,and there were polymerization and further reaction at 75-80 ℃ for 3 h and at 85 ℃ for 1 h respectively.