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手机外壳、LED灯的迅猛发展,带动了高品质抛光液的市场需求大增.而抛光液的重要成分是大粒径硅溶胶,目前国内大粒径硅溶胶产品相对不稳定,进口份额较大,价格较高.介绍了对大粒径、高浓度硅溶胶的优良性能,分析了大粒径高浓度硅溶胶的晶种的制备、粒子增长机理、影响粒径长大的因素、粒径的稳定性、影响稳定性的因素、浓缩机理.“,”As the rapid development of mobile phone shell and lights,the market demand of high quality polishing liquid was increased,and the important composition of polishing fluid is big particle size silica sol. The current domestic large diameter silicon sol products is not relatively stable,the import share is larger,and the price is higher. The large size,good performance and high concentration silica sol were introduced,the preparation of the crystal seed of the large diameter high concentration silica sol,the particle growth mechanism,the influencing factors of particle growth,the stability of the particle size,the influencing of factors of the stability and enrichment mechanism were systematically analyzed.