Method for preparing magnetorheological fluid

Abstract

The invention discloses a method for preparing magnetorheological fluid. The method comprises three procedures of preparing ferronickel magnetic particles through an electroplating technology, preparing carrier liquid and synthetizing the magnetorheological fluid. Compared with the prior art, the method is used for preparing the magnetorheological fluid through the three procedures, so that the surfaces of suspended carbonyl iron powder magnetic particles are uniformly coated with nickel metal, therefore, the possibility of agglomeration of the magnetic particles is reduced, the particles are prevented from settling effectively, the magnetic particles are prevented from being oxidized, and the obtained magnetorheological fluid is greatly improved in magnetic saturation intensity, and has good anti-settling ability, oxidation resistance and agglomeration resistance. The magnetorheological fluid prepared by the method can be widely used in fields such as aviation, machinery, vehicles or civil construction structure intelligent vibration attenuation.

Description

technical field [0001] The invention relates to a preparation method of high-performance magnetorheological fluid. Background technique [0002] Magneto-rheological fluid is a new type of intelligent material. Magnetorheological fluid is composed of magnetic particles, carrier liquid and stabilizer. It is a non-colloidal suspension liquid with controllable rheological characteristics as the external magnetic field changes. Magneto-rheological dampers, which are widely used in engineering, are made by making full use of the adjustable intelligent characteristics of magnetorheological fluids, so the performance of magnetorheological fluids directly affects the performance of dampers. [0003] At present, the main problems of magnetorheological fluids are the sedimentation, agglomeration and oxidation problems caused by the long-term standing and the large specific gravity difference between the media, as well as the insufficient magnetic saturation strength of the magnetic par...

AI Technical Summary

Problems solved by technology

[0003] The main problems of magnetorheological fluids at present are the sedimentation, agglomeration and oxidation problems caused by the long-term standing and the large specific gravity difference between the media, as well as the insufficient magnetic saturation of the magnetic particles.

Existing experiments have shown that the use of alloys of iron powder and other metals as magnetic particles can increase its magnetic saturation strength, but it often fails to achieve the desired effect in terms of anti-sedimentation and oxidation resistance