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Lubricant as well as preparation method and application thereof

A lubricant and reaction technology, applied in the field of lubricant and its preparation, can solve the problems of easy oxidation of molybdenum disulfide, etc., and achieve the effects of not being easy to oxidize and fail, solving oxidative decomposition, and good lubricating effect

Active Publication Date: 2021-05-11
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention aims to provide a lubricant and its preparation method and application, so as to solve the problem that molybdenum disulfide is easily oxidized in the lubricant question

Method used

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  • Lubricant as well as preparation method and application thereof
  • Lubricant as well as preparation method and application thereof
  • Lubricant as well as preparation method and application thereof

Examples

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preparation example Construction

[0028] The preparation method of lubricant of the present invention comprises the following steps:

[0029] (1) Molybdenum disulfide is added to the piranha solution, stirred continuously for 5-10min, then washed and dried to obtain surface hydroxylated molybdenum disulfide particles;

[0030] (2) The surface hydroxylated molybdenum disulfide particles obtained in step (1) are ultrasonically dispersed in deionized water to form a suspension, then the suspension is mixed with absolute ethanol, and then ethyl orthosilicate, Ammonia water starts to react at a certain temperature, and reacts under electromagnetic stirring for 6 to 24 hours;

[0031] (3) After the reaction in step (2) is over, separate the reaction product of step (2), wash the reaction product with absolute ethanol and deionized water successively, and then carry out vacuum drying to obtain a silica-coated molybdenum disulfide compound material (ie the lubricant of the present invention).

[0032] In the piranha...

Embodiment 1

[0036] The preparation method of present embodiment lubricant comprises the following steps:

[0037] (1) Add 0.003g of molybdenum disulfide powder into the prepared piranha solution, stir continuously for 5min, wash and dry;

[0038] (2) Add 15ml of deionized water to the molybdenum disulfide treated in step (1), ultrasonically disperse for 10 minutes, make a rough suspension, then mix with 30ml of absolute ethanol, add 0.3ml of ethyl orthosilicate, 0.5 ml of ammonia water, start the reaction at 25°C, and react for 16 hours under electromagnetic stirring;

[0039] (3) Separate the above reaction product, wash it twice with absolute ethanol, then wash it twice with deionized water, and then dry it in vacuum to obtain a silicon dioxide-coated molybdenum disulfide composite material (ie, the lubricant of the present invention).

[0040] figure 1 Transmission electron microscope image of the silica-coated molybdenum disulfide composite material prepared in Example 1 of the meth...

Embodiment 2

[0042] The preparation method of present embodiment lubricant comprises the following steps:

[0043] (1) Add 0.003g of molybdenum disulfide powder into the prepared piranha solution, stir continuously for 5min, wash and dry;

[0044](2) Add 10ml of deionized water to the molybdenum disulfide treated in step (1), ultrasonically disperse for 10min, make a rough suspension, then mix with 20ml of absolute ethanol, add 0.8ml of ethyl orthosilicate, 0.6 ml of ammonia water, start the reaction at 25°C, and react for 6 hours under electromagnetic stirring;

[0045] (3) Separate the above reaction product, wash it twice with absolute ethanol, then wash it twice with deionized water, and then dry it in vacuum to obtain a silicon dioxide-coated molybdenum disulfide composite material (ie, the lubricant of the present invention).

[0046] figure 2 Transmission electron microscope image of the silica-coated molybdenum disulfide composite material prepared in Example 2 of the method of ...

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Abstract

The invention discloses a lubricant and a preparation method and application thereof, the lubricant is of a core-shell structure, the core is molybdenum disulfide particles, and the shell is silicon dioxide coating the molybdenum disulfide particles. The preparation method of the lubricant comprises the following steps: adding molybdenum disulfide into a strong oxidizing solution, continuously stirring for a certain time, and then washing and drying; adding deionized water into the treated molybdenum disulfide, carrying out ultrasonic dispersion, coarsely preparing a turbid liquid, then mixing the turbid liquid with absolute ethyl alcohol, adding tetraethoxysilane and ammonia water, starting to react at a certain temperature, and reacting for several hours under electromagnetic stirring; and separating the reaction product, washing with absolute ethyl alcohol for multiple times, washing with deionized water for multiple times, and drying in vacuum to obtain the lubricant. The lubricant prepared by the invention can be used as a lubricant for metal material processing such as hot extrusion, and the method has the characteristics of simple process, easily available raw materials, low cost, good lubricating property and the like.

Description

technical field [0001] The invention belongs to the technical field of lubricating materials, and in particular relates to a lubricant and its preparation method and application. Background technique [0002] As a typical transition metal binary compound, molybdenum disulfide has a graphene-like structure, and covalent bonds are formed between Mo and S atoms in the layer, and the structure is stable. With the rapid development of technology, MoS 2 Nanomaterials have important applications in many aspects, such as: lubricants, catalysts, coating materials and electronic probes, etc.; in addition, because MoS 2 It is a P-type narrow bandgap semiconductor nanomaterial, and is also widely used in solar cells, optoelectronic devices, etc. Molybdenum disulfide overcomes the shortcomings of zero-bandgap graphene materials with its unique structural properties and still has many advantages, and has great potential in many fields. solve. [0003] MoS 2 Because of its good lubric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/22C10M125/26C10M125/00C10N30/06C10N30/10C10N30/08
CPCC10M125/22C10M125/26C10M125/00C10M2201/066C10M2201/105
Inventor 高原吴彤潘奘赵省良王伟王快社
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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