磁流变液导电性能研究

Conductive properties of magnetic fluids

磁流变液的安全性是其应用推广的重要保障,对磁流变液导电特性(绝缘特性)的研究有着重要意义。实验的目的是测量出磁流变液的阻值随磁场变化规律,并分析其导电性能。设计制作了磁流变液电阻,该电阻是上下底面为金属的圆柱体容器,容器内装满磁流变液。在外加磁场作用下,由于两金属极板间的磁流变液的磁性颗粒连接成链,使极板间的导电性能发生变化,从而导致电阻减小。推导出了电阻表达式,表明与实验结果相符。

The safety of MRF is an important guarantee for its application.So it＇s of significance to research the conductive properties（insulating properties）of MRF.The aim of this paper is measuring the MRF＇s resistance with the magnetic field,and anglicizing its electric properties.The article had designed MRF resistors,which was made of metal cylinder containers and filled with magnetorheological fluid.With the magnetic field effect.the magnetic particles between two metal plates connected into chains,which make conductivity between two plates change,causing the decrease of resistance.We deduced resistance expression,and the experimental results matched the expection.