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Effect of silicone oil viscosity on the properties of magnetorheological fluids

XINHUA LIU1,2, LIFENG WANG1,* , HE LU1, DONGDONG WANG1, QINGQING CHEN1, ZHONGBIN WANG1,*

Affiliation

  1. School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou, China
  2. The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, China

Abstract

Aiming to study the effect of silicone oil viscosity on the properties of silicone oil based magnetorheological fluids (MRF), exper iment materials, preparation process and test methods are elaborated, and f ive kinds of MRF samples with different silicone oil viscosity are prepared T he microstructures of both carbonyl iron particles and coated carbonyl iron particles are observed by s canning electron microscope (SEM). Moreover, test experiments are carried out and the effect of silicone oil viscosity on sedimentation stability, zero field viscosity and shear yield stress is discussed. Experimental results show that the silicone oil vis cosity has a significant influence on sedimentation stability and zero field viscosity of MRF, but little impact on shear yield stress of MRF. Furthermore, the MRF with silicone oil viscosity 350cst and 500cst is best for the requirement of engineering app lications..

Keywords

Magnetorheological fluids, Silicone oil viscosity, Sedimentation stability, Zero field viscosity, Shear yield stress.

Citation

XINHUA LIU, LIFENG WANG, HE LU, DONGDONG WANG, QINGQING CHEN, ZHONGBIN WANG, Effect of silicone oil viscosity on the properties of magnetorheological fluids, Optoelectronics and Advanced Materials - Rapid Communications, 9, 1-2, January-February 2015, pp.226-230 (2015).

Submitted at: March 27, 2014

Accepted at: Jan. 21, 2015