气相二氧化硅/硫酸溶液触变特性及触变性测定  

Thixotropic property of fumed silica/sulfuric acid solution and thixotropy measurement

作　　者：孙小祥[1,2] 赵剑曦[2] 

机构地区：[1]黔南民族师范学院化学化工学院,贵州都匀558000 [2]福州大学化学学院胶体与界面化学研究所,福建福州350108

出　　处：《电源技术》2016年第11期2169-2172,共4页Chinese Journal of Power Sources

摘　　要：在描述气相二氧化硅(F-SiO_2)商品特性的基础上,阐述了F-SiO_2作为铅酸蓄电池硫酸电解液胶凝剂的触变性质。介绍了F-SiO_2触变性的流变触变环测试方法,讨论了影响测定的三个主要因素,分别是样品静置时间、最大剪切速率、线性增加(或减小)剪切速率的持续时间。以两个实例强调了触变性对F-SiO_2胶凝剂的意义。The property of fumed silica （F-SiO2） goods was firstly described, based which the thixotropic property of F-SiO2 as a gelling agent for the sulphuric acid solution in lead-acid batteries was expounded. A method of hysteresis loop was introduced for the measurement of the thixotropy of F-SiO2 and the three main factors were discussed in detail which may influence the thixotropy determination, i.e., the standing time of example, the maximum shearing rate, and the duration of linear increasing （or decreasing） shearing rate. Finally, the two practical examples were showed to emphasize the significance of thixotropy for F-SiO2 as gelling agent.

关 键 词：气相二氧化硅 铅酸蓄电池 胶凝剂 触变性 测试方法 

分 类 号：TM912[电气工程—电力电子与电力传动]