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Method for preparing oil-based magneto-rheological hydraulic drive medium

A hydraulic transmission, oil-based magnetic technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of high oil-based magnetorheological fluids, such as high price, poor lubricity, and poor anti-wear properties, and achieves a wide viscosity range and good stability. , good anti-oxidation performance

Inactive Publication Date: 2011-04-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil-based magnetorheological fluid prepared with silicone oil as the carrier fluid is expensive, poor in lubricity, poor in wear resistance, high in viscosity, and poor in fluidity, so it is not suitable as a hydraulic transmission medium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 350g Fe 3 O 4 The magnetic particles were added to 700g of distilled water, then 15g of oleic acid, and mechanically stirred at room temperature, stirring speed 300r / min, stirring time 60min, to obtain modified Fe 3 O 4 Magnetic particle powder;

[0027] (2) Place the modified magnetic particle powder in a nitrogen-protected drying box for drying treatment at a low temperature, at a temperature of 100°C, and dry to a moisture content of less than 5% by weight, to obtain dry modified magnetic particles powder;

[0028] (3) Add the dry modified magnetic particle powder to 600g of HL hydraulic oil of the brand N 68, and perform mechanical stirring at room temperature, stirring speed 200r / min, stirring time 3h, to obtain a uniform suspension;

[0029] (4) Add 15 g of montmorillonite to the suspension obtained in step 3, and perform mechanical stirring and mixing at room temperature at a stirring speed of 150r / min and stirring for 2h to obtain a uniform suspension;

[0030] ...

Embodiment 2

[0034] (1) Put 400g Fe 3 O 4 Add magnetic particles into 500g distilled water, then add 15g sodium oleate, stir mechanically at room temperature, stirring speed 300r / min, stirring time 60min, to obtain modified Fe 3 O 4 Magnetic particles

[0035] (2) The modified Fe 3 O 4 The magnetic particles are placed in a nitrogen-protected drying box for drying treatment at a low temperature, at a temperature of 80°C, and dried to a moisture content of less than 5% by weight to obtain a dry modified Fe 3 O 4 Magnetic particles

[0036] (3) The dry modified Fe 3 O 4 Add the magnetic particles to 550g of N 68 anti-wear hydraulic oil, and perform mechanical stirring at room temperature, stirring speed 200r / min, stirring time 3h, to obtain a uniform suspension;

[0037] (4) Add 15g of montmorillonite to the suspension obtained in step 3, and perform mechanical stirring and mixing at room temperature, with a stirring speed of 150r / min, and a stirring time of 2h, to obtain a uniform suspension;

[003...

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Abstract

The invention relates to a method for preparing an oil-based magneto-rheological hydraulic drive medium, which comprises the following steps of: sequentially adding 50 to 65 percent of mineral oil, 30 to 40 percent of magnetic particles and 1 to 10 percent of additive according to the proportion, and stirring and mixing to obtain the oil-based magneto-rheological hydraulic drive medium. The oil-based magneto-rheological hydraulic drive medium can realize the movement of a valve core with a few relative sliding pairs or without the relative sliding pair, improves the control performance of a hydraulic element and a hydraulic system, and can meet the requirement of most hydraulic systems on viscosity and the using requirement of the drive medium in the hydraulic system.

Description

1. Technical Field [0001] The invention relates to a preparation method of an oil-based magnetorheological hydraulic transmission medium, which belongs to the technical field of chemical preparation. 2. Background technology [0002] Magnetorheological fluid is a new type of smart material that has both the magnetic properties of magnetic solid materials and the fluidity of liquids. It can perform a controllable, reversible and continuous rapid transition between the properties of liquid and solid. It is widely used in medicine and aviation. Aerospace, large-scale civil engineering, mechanical processing, automotive engineering, mechatronics and other fields. [0003] Oil magnetorheological fluid is mainly composed of three parts: magnetic particles, carrier fluid and additives. Generally, the selected magnetic particles are ferromagnetic materials, ferrite magnetic materials and other soft magnetic materials. The carrier fluid of oil-based magnetorheological fluid generally incl...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M177/00C10N30/06C10N40/08
Inventor 吴张永王娴莫子勇贾伟亮王娟王庆辉温成卓吴喜
Owner KUNMING UNIV OF SCI & TECH
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