文献类型：期刊文献

中文题名：纳米二氧化硅水分散体的制备及复配

英文题名：Preparation of Aqueous Nanometer Silica Dispersions Made from Silica Sols with Well-defined Particle Size

作者：黄福明[1];袁荞龙[1];胡春圃[1];应圣康[1]

机构：[1]华东理工大学超细材料制备与应用教育部重点实验室,上海200237

年份：2003

卷号：29

期号：6

起止页码：583

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;EI(收录号：2004068009628);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：上海市纳米专项基金(0212nm008)

语种：中文

中文关键词：紧密堆积模型;复配;硅溶胶;纳米二氧化硅水分散体;表面性能

外文关键词：closely packed model; composite; silica sol; aqueous nanometer silica dispersion; surface property

摘要：通过粒子紧密堆积数学模型计算得到不同粒径硅溶胶粒子间的最优配比,在此基础上合成了3种不同单分散粒径的硅溶胶。将不同粒径硅溶胶按数学模型计算的比例加入到钾水玻璃中,复配制备了不同纳米二氧化硅水分散体。与由单一粒径硅溶胶形成的膜相比,由不同粒径硅溶胶复配后形成的膜,呈现出较高的结构致密性和憎水性,与由粒子紧密堆积模型推导结果吻合。
Three monodispersed silica sols with welldefined particle size were synthesized and characterized by means of transmission electron microscopy. Two kinds of aqueous nanometer silica dispersions were prepared by adding silica sols with different sizes into potassium silicate according to the mass ratios calculated from the closely packed model of particles. The coating films formed by these composite silica sols show higher structure density and less porosity as well as better hydrophobicity than that formed by silica sol with uniform particle size distribution. All these experimental data are consistent with the results derived from the closely packed model.