新型低温型聚丙烯酸酯乳液的合成

采用种子乳液聚合法合成新型低温反应型聚丙烯酸酯乳液粘合剂，即以丙烯酸丁酯（BA）、丙烯酸异辛酯（EHA）、苯乙烯（St）为软、硬单体，丙烯酸（AA）为功能单体，以过硫酸钾为引发剂，并选用一种适当的交联单体合成了性能优良的聚丙烯酸酯涂料印花粘合剂。讨论了引发剂用量、乳化剂用量、阴／非离子乳化剂的配比、乳液滴加时间、保温时间等对聚合物的影响。确定了乳液聚合最佳工艺条件：乳化剂用量为o8％，阴／非乳化剂质量比为4：3，引发剂用量为0．8％，乳液滴加时间60min，保温时间60min。

Synthesis of low temperature curable polyacrylate emulsion

The low temperature curable polyacrylate emulsion adhesives were prepared by seed emulsion polymerization method,taking butyl acrylic(BA),ethylhexyl acrylate(EHA) and styrene(ST) as the soft or hard monomers,acrylic acid(AA) as the functional monomer,potassium sulfate as the initiator.The polyacrylate adhesives were applied in pigment printing with a proper crosslinking monomer.The influence of amounts of initiator and emulsifier,anionic/nonionic emulsifier ratio by weight,pre-emulsion dripping time and holding time on the polymer performance was discussed.Finally,the optimal condition of emulsion polymerization is as follows:emulsifier amount 0.8%,anionic/nonionic emulsifier ratio by weight 4:3,initiator amount 0.8%,pre-emulsion dripping time 60 min,holding time 60 min.