丙烯酸酯类水性上光油的研制

Study on preparing waterborne acrylate varnish

以甲基丙烯酸甲酯（MMA）、丙烯酸丁酯（BA）、丙烯酸（AA）和丙烯酸羟乙酯（HEA）为共聚单体，Ⅳ-羟甲基丙烯酰胺（N—MAM）为交联单体，采用半连续核／壳乳液聚合法制备水性N—MAM改性丙烯酸酯树脂；然后以此为连接料和基体树脂，并引入WT-204（水性流变助剂）、乙醇等助剂，制备水性上光油。研究结果表明：该水性上光油具有良好的成膜性能；当叫（WT-204）=1．0％-3．5％（相对于树脂乳液质量而言）8寸，水性上光油的黏度为20～50s、光泽度为80％-120％，并且其各项性能符合高光泽水性上光油的标准要求；当w（乙醇）=1％（相对于树脂乳液质量而言）日寸，水性上光油的干燥效果相对较好。

With methyl methacrylate （ MMA ）, butyl acrylate （ BA ）, acrylic acid （ AA ） and hydroxyethyl acrylate（HEA） as comonomers,N-methylol acrylamide（N-MAM） as cross-linking monomer,a waterborne acrylate resin modified by N-MAM was prepared by semi-continuous core/shell emulsion polymerization. Then,with it as a binder and a matrix resin,and the WT-204（waterborne rheological additive）,ethanol and other additives were introduced into system,so a waterborne varnish was prepared. The research results showed that the waterborne varnish had good film-forming properties. And its various properties could meet standard requirements of waterborne varnish with high gloss because viscosity and gloss of waterborne varnish were 20-50 s and 80%-120% respectively when mass fraction of WT-204 was 1.0%-3.5% in resin emulsion. The drying effect of waterborne varnish was relatively better when ethanol was 1% in resin emulsion.