气相二氧化硅分散粒径的测试方法  

A method measuring the dispersing size of fumed silica

作　　者：孙小祥[1] 赵剑曦[1] 

机构地区：[1]福州大学化学化工学院胶体与界面化学研究所,福建福州350108

出　　处：《电池》2015年第6期340-342,共3页Battery Bimonthly

摘　　要：通过讨论粒度分析仪依据的光散射原理,强调排除浓度效应的必要性,提出可用简单的外推图解法准确获得商品气相二氧化硅（F-SiO_2）的分散粒径d。对F-SiO_2而言,外推线性区通常在0.1%~1.0%浓度范围内。举例说明分散粒径对F-SiO_2在硫酸溶液中胶凝行为的强烈影响,发现随着分散粒径的增大,电解液的触变性增加。The necessary of eliminating the influence of particle concentration was emphasized through a brief discussion about the light scattering principle depended by the instrument. A simple diagrammatic method of extrapolation was suggested to use,by which it could be obtained accurately the dispersed diameter d of F-SiO_2 goods. For F-SiO_2,the linear region of extrapolation was generally in the range of 0. 1% ~ 1. 0%. An example was given to show the strong influence of the dispersed diameter on its gelation behavior of F-SiO_2 in sulphuric acid medium. With the increasing of dispersed diameter,the thixotropy of the electrolyte solution was enhanced.

关 键 词：分散粒径测试 粒子浓度影响 图解法 气相二氧化硅(F-SiO_2) 

分 类 号：TM912.1[电气工程—电力电子与电力传动]