摘要
用球形羰基铁颗粒、硅油和油酸制备了磁流变液（MRF），该MRF不加外磁场时就呈现非牛顿性，MRF的剪切应力τ随剪切率γ的变化关系为一曲线，其表现粒度随剪切速率的增大而减小，在外磁场作用下，MRF的迅速增大两个数量级，MRF呈现一定的屈服应力τy＝94．7Pa，当τy后，MRF的流变特性满足Bingham模型。
We prepared magnetorhelogical fluid (MRF) consisted of carbonyl iron, silicone oil and oleic acid. In the absence of a magnetic field, the present MRF behaves as non-Newtonian fluid and shear thinning.under the influence of a magnetic field, the appearent viscosity of the MRF increases up to two orders of magnitude and exhibits a yield stress ty= 94. 7Pa. When shear stress τ>τy, the rheological properties of MRF satisfy Bingham model.
出处
《功能材料》
EI
CAS
CSCD
北大核心
1998年第5期550-552,共3页
Journal of Functional Materials
基金
军事电子预研资助
关键词
磁流变液
流变学
剪切应力
粘滞系数
magnetorhelogical fluid, rheology, shear stress, viscosity
