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Two-dimensional material solid lubricating film and preparation method thereof

A two-dimensional material, solid lubrication technology, applied in electrolytic inorganic material coating, device for coating liquid on surface, special surface, etc., can solve the problems of poor film compactness, material waste, etc., to improve mechanical properties, improve lubrication performance , the effect of excellent apparent quality and stability

Pending Publication Date: 2019-07-30
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is suitable for large-area rapid preparation, but it has disadvantages such as poor film density and serious waste of materials.
[0005] So far, there is still a lack of a process that not only meets the simple, efficient, and low-cost process requirements, but also can meet the requirements of controllable film thickness, high stability, good adhesion, good mechanical properties, dense and uniform, smooth surface, high purity, and friction. There is an urgent need to vigorously develop this technology to achieve a breakthrough in the preparation technology and accelerate its practical application.

Method used

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  • Two-dimensional material solid lubricating film and preparation method thereof
  • Two-dimensional material solid lubricating film and preparation method thereof
  • Two-dimensional material solid lubricating film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Add 1 g of molybdenum disulfide with an average particle size of 5 nm into 100 mL of acetone, and ultrasonicate for 120 h at an ultrasonic power of 50 W. Take 5 mL of the ultrasonic sample and drop-coat it on the bearing steel workpiece, and completely evaporate the solvent by heating and drying at 100°C. Repeat the above steps 5 times, and then spray 1 mL of N,N dimethylformamide (DMF) on the surface of the film , let it dry naturally, and finally undergo vacuum thermal annealing treatment at 200 degrees for 1 hour, and you can get a molybdenum disulfide solid lubricating film with a thickness of about 100 μm.

[0060] Figure 1a It is the disc bearing steel workpiece photo in embodiment 1;

[0061] Figure 1b Be the ball bearing steel workpiece photo in embodiment 1;

[0062] Figure 2a Be coated with the photo of molybdenum disulfide solid lubricating thin film disc bearing steel workpiece that embodiment 1 obtains;

[0063] Figure 2b Be coated with the photo o...

Embodiment 2

[0067] Add 1 g of boron nitride with an average particle size of 400 nm into 100 mL of isopropanol, and sonicate for 100 h at an ultrasonic power of 250 W. Take 5mL of the ultrasonic sample and spray it on the bearing steel workpiece, and completely evaporate the solvent by heating and drying at 250°C, repeat the above steps 5 times, and finally undergo vacuum thermal annealing treatment at 200°C for 1 hour, and the surface of the bearing steel workpiece can be obtained Boron nitride solid lubricating film with a thickness of about 100 μm.

[0068] Figure 4a Be coated with the photo of the boron nitride solid lubricating film disc bearing steel workpiece obtained in embodiment 2;

[0069] Figure 4b It is the photo of the boron nitride solid lubricating film ball bearing steel workpiece coated with the obtained embodiment 2.

[0070] from Figure 4a with Figure 4b It can be seen that the boron nitride solid lubricating film can be prepared on the surface of the disc (flat...

Embodiment 3

[0072] 1 g of graphene with an average particle size of 100 nm was added to 100 mL of N-methylpyrrolidone (NMP), and ultrasonicated at 250 W for 100 h. Take 5mL of the ultrasonic sample and spray it on the bearing steel workpiece, and completely evaporate the solvent by heating and drying at 250°C, repeat the above steps 10 times, and finally undergo vacuum thermal annealing treatment at 200°C for 1 hour, and the surface of the bearing steel workpiece can be obtained A graphene solid lubricant film with a thickness of about 200 μm.

[0073] Figure 5a Be coated with the photo of graphene solid lubricating film disc bearing steel workpiece that embodiment 3 obtains;

[0074] Figure 5b The photo that is coated with the graphene solid lubricating film ball bearing steel workpiece that embodiment 3 obtains.

[0075] from Figure 5a with Figure 5b It can be seen that the graphene solid lubricating film can be prepared on the surface of the disc (flat surface) and spherical (...

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Abstract

The invention provides a preparation method of a two-dimensional material solid lubricating film. The preparation method comprises the following steps of coating the surface of a workpiece with a two-dimensional material dispersion liquid, drying the workpiece after coating, and carrying out adhesion promoting treatment on the workpiece after drying to obtain the two-dimensional material solid lubricating film on the surface of the workpiece. The preparation method has the advantages of low cost, wide source of raw materials and the like. The prepared film is controllable in thickness, high instability, good in adhesion property, good in mechanical property, compact and uniform, smooth in surface, high in purity, and small in friction coefficient, and maintains excellent lubricating performance under extreme conditions of ultra-high vacuum, high speed, high temperature, high pressure, heavy load and the like; and the prepared film has good application prospects in the industrial manufacturing fields of machining, aerospace, materials, optoelectronic devices and the like.

Description

technical field [0001] The invention belongs to the technical field of lubricating coating preparation, and relates to a two-dimensional material solid lubricating film and a preparation method thereof. Background technique [0002] With the advent of the modern industrialization era, we are also facing the challenges of resource depletion and energy crisis. The continuous operation of mechanical equipment often has the phenomenon of friction and wear. According to statistics, friction and wear have lost more than 1 / 3 of the world's primary energy. Therefore, it is imperative to develop new lubricating materials. At present, lubricating materials are mainly divided into gaseous, liquid, semi-solid and solid lubricating materials according to their forms. With the vigorous development of my country's aerospace and other space industries, traditional lubricating materials have been unable to meet the application requirements of ultra-high vacuum, high speed, heavy load, high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/24C25D9/04
CPCB05D5/00B05D7/24C25D9/04
Inventor 张勇徐元清梁程王卫彪陈哲学
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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