Abstract: The title silica sol/polyacrylate compound emulsion was synthesizecd through in-situ emulsion polymerization with high inorganic-organic ratio(0.6-0.9)and high Sio, content(16%18%). Prop-erty tests indicated that this compound emulsion was superior to the all polyacrylate emulsion and silica/poly-acrylate blended emulsion in storage stability, stability to calcium ion, film hardness, and heat resistance,but slight down of water resistance.The transmisione lectron microscope (TEM) photo indicated that the a core-shell structure emulsion was formed, where the nanosilica is core and the polyacrylate is shel.

Key words: high inorganic-organic ratio, high Sio -sol content, compound emulsion, core-shell structure;synthesize

摘要： 使用原位乳液聚合法合成高无机-有机组分比(0.6~0.9)，高二氧化硅含量(16%~18%)的硅溶胶-聚丙烯酸酯复合乳液。性能测试结果显示，本复合乳液在贮存稳定性、钙离子稳定性以及涂膜硬度和耐热性等方面优于纯丙乳液，而涂膜的耐水白性稍变差;透射电镜照片表明，该复合乳液形成以二氧化硅为核，聚丙烯酸酯为壳的核-壳结构。

关键词: 高无机-有机比, 高硅溶胶含量, 复合型乳液, 核壳结构制备, 合成