纳米SiO<sub>2</sub>/黄原胶复合触变剂对磁流变液性能的影响

doi:10.11896/cldb.201906026

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Abstract Xanthan gum was utilized to modify nano-sized fumed silica particles and fabricate compound thixotropic agent. The influences on rheological performance, viscoelasticity and suspension stability of magnetorheological fluids (MRFs)by this compound thixotropic agent were investigated in this work. The results proved a stable organic xanthan gum layer coated on the surface of SiO₂ particles. MRFs containing compound thixotropic agent presented increased shear stresses and yield stresses in the presence of magnetic field. The viscoelasticity tests revealed a wider linear viscoelastic range of MRFs in the absence of magnetic field. However, once a magnetic field was applied, stronger field-induced chains were likely to form inside the MRFs containing compound thixotropic agent, and as a consequence, the flow points and deformation energy of MRFs increased. Moreover, the suspension stabilities of MRFs were tested by directly observation, which indicated a further improvement in the suspension stability of MRFs containing the compound thixotropic agent.

Key words： magnetorheological fluid thixotropy rheological performance organic coating suspension stability

Published: 03 April 2019

CLC number:

TB34

Fund:This work was financially supported by the 2017 Chongqing Graduate Student Innovation Fund (CYB17147) and 2016 Youth Scientific Research Fund Project of Logistical Engineering University (YQ16-421001).

About author:: Hansong Zhang received his master degree in June 2016 from Logistics Engineering University.Zhide Hu is currently an associate professor in Amy Logistics University of PLA.

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	ZHANG Hansong
	HU Zhide
	YAN Hua
	XUE Ming
	JIA Yifan

Cite this article:

ZHANG Hansong,HU Zhide,YAN Hua, et al. The Influences on Performances of Magnetorheological Fluid by Nano-sized SiO₂/Xanthan Gum Compound Thixotropic Agent[J]. Materials Reports, 2019, 33(6): 1052-1056.

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http://www.mater-rep.com/EN/10.11896/cldb.201906026 OR http://www.mater-rep.com/EN/Y2019/V33/I6/1052

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