Preparation, Property Tests, and Limited Chain Model of Magnetorheological Fluid
Preparation, Property Tests, and Limited Chain Model of Magnetorheological Fluid
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DOI：
10.1061/(asce)mt.1943-5533.0001190
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发表时间：
2015-08
影响因子：
3.2
通讯作者：
Zhao-dong Xu;Wei-Yang Guo;Bing-Bing Chen-Bing
中科院分区：
文献类型：
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作者：
Zhao-dong Xu;Wei-Yang Guo;Bing-Bing Chen-Bing
磁流变液是一种新型的智能材料，其性能可以通过三个重要因素来评价：稳定性、粘度和剪切屈服应力。在这项研究中，生产精细，抗沉降，分散良好的MR流体，适当的成分和制备技术，并开发了一种表面处理方法，涉及不同的表面活性剂。结果表明，该制备方法能减缓磁流变液的沉降速度，磁流变液的粘度随温度和剪切速率的变化而变化，液体石蜡比油酸能更缓慢地降低磁流变液的粘度。此外，剪切屈服应力与磁感应强度和体积分数的变化进行了测定。为了准确描述磁流变液的剪切屈服应力，考虑羰基铁（CI）的空间分布，建立了有限链模型。
AbstractMagnetorheological (MR) fluids are a new type of smart material whose performance can be evaluated by considering three important factors: stability, viscosity, and shear yield stress of the fluids. In this study, to produce fine, antisettling, and well-dispersed MR fluids, appropriate components and preparation techniques were adopted and a surface treatment method was developed involving different surfactants. Property tests of the MR fluids were conducted, and the results demonstrated that the proposed preparation method decelerated the sedimentation of MR fluids, that the viscosity of the MR fluids varied with temperature and shear rate, and that liquid paraffin can reduce the viscosity of the MR fluids more gradually than oleic acid. In addition, variations in shear yield stress with magnetic induction intensity and volume fraction were determined. To accurately describe the shear yield stress of the MR fluids, a limited chain model that considers the spatial distribution of carbonyl iron (CI...