高固含量丙烯酸酯微乳液的研究

Study on acrylate micro-emulsion with high solid content

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)和N-羟甲基丙烯酰胺(NMA)为功能性单体以及过硫酸铵(APS)-亚硫酸氢钠为引发剂,合成了固含量为45%左右的丙烯酸酯微乳液。研究结果表明:普通乳化剂[烷基酚醚磺基琥珀酸酯钠盐(OS)、十二烷基硫酸钠(SDS)]、反应性乳化剂[烯丙氧基羟丙磺酸钠(HAPS)]、NMA和反应温度等对合成的丙烯酸酯微乳液性能有影响;当反应温度为80～85℃、w(OS)=4.2%、w(SDS)=2.2%、w(HAPS)=0.5%和w(NMA)=0.50%时,合成的丙烯酸酯微乳液的综合性能较好。

With methyl methacrylate （MMA） as hard monomer, butyl acrylate （BA） as soft monomer, acrylic acid（AA） and N-hydroxymethyl acrylamide（NMA） as functional monomers, and ammonium persulfate（APS）-sodium bisulfite as initiator, so an acrylate micro-emulsion with 45% about solid content was synthetized. The research results showed that the some factors, including ordinary emulsifier（OS and SDS）,reactive emulsifier（HAPS）,NMA and reaction temperature, have influence on performances of acrylate micro-emulsion. The combination properties of acrylate micro-emulsion were better when reaction temperature was 80-85 ℃, mass fractions of OS, SDS, HAPS and NMA were 4.2%, 2.2%,0.5% and 0.50%, respectively.