论文部分内容阅读
以丙烯酸丁酯(BA)和丙烯酸-2-乙基己酯(2-EHA)为软单体、甲基丙烯酸甲酯(MMA)为硬单体、丙烯酸(AA)为功能单体、甲基丙烯酸羟乙酯(HEMA)为交联单体和十二烷基硫酸钠(SDS)/乳化剂(OP-10)为阴/非离子型复合乳化剂,采用核/壳种子乳液聚合法制备了丙烯酸酯共聚乳液;然后在壳层聚合时寸加入HEMA,并用乙烯基有机硅进行改性,制得硅丙乳液。结果表明:当m(SDS):m(OP-10)=3:2、w(复合乳化剂)=3.4%、w(引发剂)=0.82%、w(HEMA)=3.5%、聚合温度为80℃以及聚合中期加入6.8%乙烯基硅油至壳单体中时,硅丙乳液及其胶膜的稳定性、耐水性和力学性能俱佳。
With butyl acrylate (BA) and 2-ethylhexyl acrylate (2-EHA) as soft monomers, methyl methacrylate (MMA) as hard monomer, acrylic acid (AA) as functional monomer, methyl Hydroxyethyl acrylate (HEMA) is a cross-linking monomer and sodium dodecyl sulfate (SDS) / emulsifier (OP-10) is a mixed anionic / nonionic emulsifier, which is prepared by the core / shell seed emulsion polymerization Acrylate copolymer emulsion; and then added HEMA shell polymerization, and modified with vinyl silicone to prepare a silicone emulsion. The results showed that the optimum conditions were as follows: m (SDS): m (OP-10) = 3: 2 w = composite emulsifier = 3.4% w = initiator = 0.82% w (HEMA) = 3.5% The stability, water resistance and mechanical properties of the silicone-acrylate emulsion and its film are both excellent at 80 ° C and when 6.8% vinyl silicone oil is added to the shell monomer in the mid-polymerization.