【摘要】 以丙烯酸类单体为聚合单体,采用种子聚合制备了高固含量聚丙烯酸酯微乳液,讨论了乳化剂用量、引发剂用量、软硬单体比例等对乳液粒径及粘度的影响,并用IR、TEM、粒径仪对共聚物进行表征,实验结果表明,随着乳化剂用量增加,乳液粘度不断增大,粒径逐渐减小;乳液粒径随引发剂用量的增大先增大后减小,而乳液粘度随引发剂用量的增大先减小后增大;随着软硬单体比例的增大,乳液粘度逐渐增大,而对粒径的影响不明显;当pH值=7.5～9时,聚丙烯酸酯微乳液具有良好的稳定性。更多还原

【Abstract】 High concentration polyacrylate microemulsion were prepared by using seed polymerization,in which the acrylic monomers was the polymerisable monomers.The effects that influence viscosity and particle size of polyacrylate emulsion including emulsifier content,initiator content and the soft monomer to hard monomer were discussed.In addition,using IR,TEM,particle size analyzer to characterize the copolymer.The results shows that,with the increas of dosage emulsifier,emulsion viscosity increase and decreasing the particle size gradually;with the increase of the dosage of initiator emulsion particle size increases first,then decreases,while with the increase of the dosage of initiator emulsion viscosity decreases increased first,then decreases.with the increase of the proportion of the soft monomer to hard monomer,emulsion viscosity increases gradually,and the influence of emulsion particle size was not clear and when the polyacrylate emulsion pH range of 7.5-9.0,the polyacrylate emulsion has good stability.更多还原