Effect of surface modification on the stability and magnetorheological properties of magnetorheological fluids
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Silicone oil-based magnetorheological fluid was prepared using CH-1D hyperdispersant and oleic acid as surface modifiers and carbonyl iron powder as magnetic particles. Through the tests of sedimentation rate and magnetic shear stress, the effects of surface modification of magnetic particles on the magnetorheological properties and sedimentation stability of magnetorheological fluids were compared. When the magnetic particle content and preparation process were the same, it was found that the magnetorheological properties and sedimentation stability of the magnetorheological fluid prepared with CH-1D hyperdispersant as the surface modifier were significantly better than that of the magnetorheological fluid with oleic acid as the surface modifier.
Do you have any special requirements for carbonyl iron powder for magnetorheological fluids?