电流变液介电常数与电导率的测量  

The measurement of dielectric permittivity and conductivity in electrorheological fluids

作　　者：刘晓龙[1] 范吉军[1] 余南辉[2] 张行举[1] 陈雅婷[1] 

机构地区：[1]武汉工业学院数理科学系,湖北武汉430023 [2]武汉工业学院机械工程学院,湖北武汉430023

出　　处：《武汉工业学院学报》2010年第1期115-117,共3页Journal of Wuhan Polytechnic University

基　　金：湖北省自然科学基金项目(2007ABA086);武汉工业学院校级大学生创新性实验计划(CX08)

摘　　要：采用频率法测定了不同浓度的电流变液介电常数,用电导池常数的方法对不同浓度的电流变液在不同电场强度下的电导率进行了测量。结果表明:电流变液的介电常数基本上随浓度的增加而增大;同一浓度的电流变液的电导率随电场强度的增大而增大,不同浓度的电流变液电导率测量结果表明电导率先随浓度增加而增大,而后减小。分析认为有效离子浓度的变化是导致电流变液导电能力先增加后降低的重要原因。Dielectric constant of ER fluids with different concentration was measured by frequency method. And the conductivity was measured by the conductivity pool method under various fluids concentration and field strength The experiment results showed that dielectric constant of ER fluids increased with the concentration. The conductivity increases with the field strength for the same fluids concentration, otherwise it increases with field strength, and finally decreases. It is considered that the concentration of effective ion is the main cause.

关 键 词：电流变液 介电常数 电导率 

分 类 号：O441.4[理学—电磁学]