反应性丙烯酸微凝胶的制备及其应用

Synthesis and Application of Reactive Acrylate Microgels

以甲基丙烯酸甲酯(MMA)、苯乙烯(St)、甲基丙烯酸环己酯(CHMA)、甲基丙烯酸2-羟乙酯(HEMA)和1,6-己二醇二丙烯酸酯(1,6-HDDA)作为单体,采用半连续乳液聚合工艺制备用于汽车OEM涂料的反应性丙烯酸微凝胶,讨论了乳化剂、引发剂、反应温度等因素对微凝胶粒径的影响,确定了最佳的合成条件。用激光散射粒径分布分析仪测定产物粒径及粒径分布,并将微凝胶粉末作为防流挂剂添加到汽车OEM漆中,具有良好的防流挂性。

The title reactive acrylate microgels applied in automotive OEM coatings were prepared by semi -continuous emulsion polymerization, in which methyl methacrylate（MMA）, styrene（ St）, cyclohexyl methacrylate （ CHMA）, 2 - hydroxyethyl methacrylate （ HEMA ）, 1,6 - hexanediol diacrylate （ 1,6 - HDDA） were used as monomers. The influence of emulsifier, initiator and reaction temperature on particle size of microgels was discussed. The laser scattering size distribution analyzer was employed to analyze particle size and distribution of the products. The microgels powder exhibited excellent anti - sagging performance in au- tomotive OEM coatings.