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《Acta Materiae Compositae Sinica》 2018-06
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Effect of orientation magnetic field on dynamic viscoelasticity of cobalt particles filled silicone rubber magnetorheological elastomers

YIN Bingxue;WANG Mingxian;TONG Yu;NIU Chenguang;ZHANG Yusheng;MA Ning;DONG Xufeng;School of Materials Science and Engineering,Dalian University of Technology;China Academy of Space Technology;Beijing Satellite Factory;School of Civil Engineering,Dalian University of Technology;  
In order to investigate the mechanism of the effect of orientation magnetic field on dynamic viscoelasticity of cobalt particles filled magnetorheological elastomer(MRE),cobalt particles were synthesized by a solvothermal method.The XRD and SEM results indicate the spherical cobalt particles have close-packed hexagonal structure with particle size within the range of 1-2μm.Silicone rubber was used as the matrix to prepare cobalt particles filled MRE.During the curing process,different orientation fields(0 mT,480 mT and 1 154 mT)were applied to prepare different MRE,and their dynamic viscoelasticity were tested.The results indicate the ordered structure formed by the cobalt particles was enhanced with increasing orientation field.As a result,the storage modulus G′and the loss modulus G″of Co particles filled(MRE)increase with increasing orientation field.However,when the orientation field exceeds a critical value,the ordered becomes stable,and the effect of orientation field on dynamic viscoelasticity of MREs becomes insignificant.
【Fund】: 国家自然科学基金(51478088)
【CateGory Index】: TB381
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