Method for preparing magnetorheological fluid

A technology of magnetorheological fluid and carrier fluid, applied in the direction of lubricating composition, etc., can solve the problems such as the anti-settling and anti-oxidation properties can not achieve the expected effect, the magnetic saturation strength of magnetic particles is insufficient, the specific gravity is poor, etc., to prevent complexation Agglomeration, enhanced magnetic saturation strength, improved anti-settling effect

Active Publication Date: 2013-10-02
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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 ma

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] A preparation method of magnetorheological fluid, the specific operation steps are:

[0021] Step 1, dissolving an appropriate amount of carbonyl iron powder particles in a sodium hydroxide solution for chemical cleaning, and then cleaning them in an ultrasonic cleaner for 1 hour to remove impurities on the surface of the carbonyl iron powder particles, then washing the particles with distilled water and drying them. Add the cleaned and dried carbonyl iron powder particles into the nickel sulfate electrolyte, use the nickel plate as the anode, and the carbonyl iron powder as the cathode for electrolytic reaction. The mass ratio of carbonyl iron powder to nickel sulfate is 10:1, and the nickel sulfate solution The concentration is 150g / L, the pH value of the electrolyte is 3.8, the temperature of the electrolytic reaction is 55°C, and the current density is 2A / dm2. Stirring the reaction solution during the reaction can accelerate the reaction and promote the uniformity of...

Embodiment 2

[0027] A preparation method of magnetorheological fluid, the specific operation steps are:

[0028] Step 1, dissolving an appropriate amount of carbonyl iron powder particles in a sodium hydroxide solution for chemical cleaning, and then cleaning them in an ultrasonic cleaner for 1 hour to remove impurities on the surface of the carbonyl iron powder particles, then washing the particles with distilled water and drying them. Add the cleaned and dried carbonyl iron powder particles into the nickel sulfate electrolyte, use the nickel plate as the anode, and the carbonyl iron powder as the cathode for electrolytic reaction. The mass ratio of carbonyl iron powder to nickel sulfate is 8:1, and the nickel sulfate solution The concentration is 300g / L, the pH value of the electrolyte is 5.5, the temperature of the electrolysis reaction is 60°C, and the current density is 5A / dm 2 Stirring the reaction solution during the reaction can speed up the reaction and promote the uniformity of t...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M177/00
Inventor 徐赵东陈兵兵郭维阳郭迎庆
Owner SOUTHEAST UNIV
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