取向磁场对钴颗粒填充硅橡胶磁流变弹性体动态黏弹性的影响  

Effect of orientation magnetic field on dynamic viscoelasticity of cobalt particles filled silicone rubber magnetorheological elastomers

作　　者：尹兵雪 王明先[2] 佟昱 钮晨光 张玉生 马宁[4] 董旭峰[1] YIN Bingxue;WANG Mingxian;TONG Yu;NIU Chenguang;ZHANG Yusheng;MA Ning;DONG Xufeng(School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China;China Academy of Space Technology, Beijing 100094, China;Beijing Satellite Factory, Beijing 100094, China;School of Civil Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学材料科学与工程学院,大连116024 [2]中国空间技术研究院,北京100094 [3]北京卫星制造厂,北京100094 [4]大连理工大学土木工程学院,大连116024

出　　处：《复合材料学报》2018年第6期1414-1420,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51478088)

摘　　要：为了研究取向磁场强度对磁流变弹性体(MRE)动态黏弹性的影响规律及影响机制,采用溶剂热法制备球状钴颗粒,SEM和XRD表征结果显示,其粒径为1~2μm,呈密排六方结构。以硅橡胶为基体,以钴颗粒为填充相,分别在0mT、480mT、1 154mT取向磁场强度下制备MRE,并在不同工况下测试其动态黏弹性。实验结果表明,Co颗粒填充的MRE微观结构的有序性随取向磁场强度增大而增加,其储能模量G′、损耗模量G″和磁流变效应也随之提高;当取向磁场强度增大到一定程度,由于有序结构趋于稳定,动态黏弹性随取向磁场的变化较小。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.

关 键 词：磁流变弹性体 智能材料 钴颗粒 取向磁场 动态黏弹性 磁流变效应 

分 类 号：TB381[一般工业技术—材料科学与工程]