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...

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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