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Date of Publication:2015-01-01

Journal:功能材料

Issue:4

Page Number:4091-4095

ISSN No.:1001-9731

Abstract:Flower-like microparticles were synthesized by a simple solvothermal method.The morphology and structure of the particles were characterized by scanning electron microscopy(SEM),transmission electron mi-croscopy(TEM),X-ray diffraction(XRD)and infrared spectroscopy(FT-IR).The results showed that the flow-er-like particles are titanium glycerolate phase,and present secondary thorn structure on their surface.The di-ameter of flower-like particles ranges from 2μm to 3μm.Two electrorheological(ER)fluids were fabricated by dispersing the flower-like particles and smooth spherical particles,the composition of which was TiO 2 ,in sili-cone oil.The electrorheological behavior and sedimentation stability was tested.The results indicated that at the same electric field levels,the flower-like particles-based ER fluid presents higher yield stress and lower current density than the smooth spherical particles-based one.Furthermore,after 12 days’setting without disturb,the sedimentation stability of the flower-like particles-based ER fluid was much better than that of the smooth spherical particles-based material.The specific morphology of the flower-like particles may be the main reason for the significant ER effect and good sedimentation stability.

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