用不同载液制备的磁流变液及其性能  

The properties of magnetorheological fluids prepared from different carrier liquids

作　　者：王利锋 路和 WANG Li-feng;LU He(College of Mechanical Engineering,Chongqing Three Gorges University,Chongqing 404020,China;College of Ocean Harbor,Lianyungang Normal College,Lianyungang 222006,China)

机构地区：[1]重庆三峡学院机械工程学院,重庆404020 [2]连云港师范高等专科学校海洋港口学院,江苏连云港222006

出　　处：《磁性材料及器件》2018年第5期28-31,共4页Journal of Magnetic Materials and Devices

基　　金：重庆市教委科学技术研究项目(KJ1710261);江苏省大学生创新创业训练计划项目(201711585011Y);重庆三峡学院青年重大培育项目(16QN07)

摘　　要：分别选择二甲基硅油、矿物油350N和合成基础油PAO10为载液制备磁流变液样品。用扫描电镜观察制备前、后磁性颗粒的微观结构。对三组样品的传动性能(沉降稳定性、零场粘度和剪切屈服应力)进行了测试和讨论。结果表明,磁流变液样品MRF-2、MRF-3的沉降速率均小于20%,励磁电流为2 A时,剪切屈服应力高于27 k Pa,具有较好的综合性能,满足传动用磁流变液的要求。Dimethyl silicone oil,mineral oil 350N and PAO10 synthetic base fluids are chosen to prepare MRFs samples.The microstructure of both carbonyl iron particles and coated carbonyl iron particles are observed by scanning electron microscope(SEM).The transmission properties of these samples including sedimentation stability,zero field viscosity and shear yield stress are tested and analyzed.Experimental results show that sedimentation ratio of MRF-2,MRF-3 is less than 20%,shear yield stress of MRF-2 and MRF-3 is 27 kPa when the excitation current is 2 A,MRF-2 and MRF-3 have better overall properties and can meet the requirements for MRF transmission.

关 键 词：磁流变液 载液 沉降稳定性 零场粘度 剪切屈服应力 

分 类 号：TB381[一般工业技术—材料科学与工程] O343[理学—固体力学]