Preparation method of stable type compound nano anti-wearing agent

A nanometer anti-wear and stable technology, used in additives, lubricating compositions, petroleum industry and other directions, can solve the problems of difficulty in aggregation of molybdenum disulfide powder, increase molybdenum disulfide lipophilic performance, increase stability and uniformity, etc. , to achieve the effect of no nano-agglomeration, small amount of addition, and reduced friction and wear

Inactive Publication Date: 2017-06-13
唐林元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: the existing anti-wear agent is easy to be hydrolyzed and delaminated in humid climate, the uniformity and stability are poor, and long-term use will produce nano-particle aggregation, which will cause new wear and tear on the parts Defects, provide a method of treating nano-molybdenum disulfide with n-butyllithium to make its sheets peel off, and then modify molybdenum disulfide with mercaptoethylamine to make its surface have polar groups, and then combine with horse Grafting with anhydride, and finally mixing with modified nano-boron nitride to prepare a stable composite nano-antiwear agent, the present invention firstly reacts nano-molybdenum disulfide with n-butyllithium-n-hexane solution, and feeds in nitrogen to stir and centrifuge. Obtain pretreated molybdenum disulfide, then ultrasonically disperse it with mercaptoethylamine and water, insert n-butyllithium between the molybdenum disulfide sheets, and the molybdenum disulfide sheets are peeled off during ultr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First, 100g of nano-molybdenum disulfide and mass fraction of 15% n-butyllithium n-hexane solution are added to a three-necked flask with a thermometer and a reflux device at a mass ratio of 1:15, and the flask is placed in an oil bath, controlled The temperature was 95°C, magnetically stirred and reacted for 3 hours. After the reaction was completed, stop heating. After the temperature was naturally cooled to room temperature, nitrogen gas was passed into the product at a rate of 30 mL / min. After stirring for 24 hours, the nitrogen gas was stopped, and Move the product into a centrifuge, centrifuge at a speed of 4500r / min for 15min, collect the precipitate, and wash it twice with n-hexane to obtain pretreated molybdenum disulfide; then the above pretreated molybdenum disulfide, mercaptoethylamine and water are Add 1:2:5 into the beaker, place the beaker in an ultrasonic oscillator, disperse ultrasonically at 40KHz for 12h, then transfer to a centrifuge, centrifuge at 45...

example 2

[0020] First, 110g of nanomolybdenum disulfide and mass fraction of 15% n-butyllithium n-hexane solution are added to a three-necked flask with a thermometer and a reflux device at a mass ratio of 1:15, the flask is placed in an oil bath, and the control The temperature was 98°C, magnetically stirred and reacted for 3 hours. After the reaction was completed, stop heating. After the temperature was naturally cooled to room temperature, nitrogen gas was passed into the product at a rate of 35 mL / min. After stirring for 25 hours, the nitrogen gas was stopped, and Move the product into a centrifuge, centrifuge at a speed of 5000r / min for 20min, collect the precipitate, and wash it twice with n-hexane to obtain pretreated molybdenum disulfide; then the above pretreated molybdenum disulfide, mercaptoethylamine and water are Add 1:2:5 into the beaker, place the beaker in an ultrasonic oscillator, disperse ultrasonically at 45KHz for 13h, then transfer to a centrifuge, centrifuge at a ...

example 3

[0023] First, 120g of nanomolybdenum disulfide and mass fraction of 15% n-butyllithium n-hexane solution are added to a three-necked flask with a thermometer and a reflux device at a mass ratio of 1:15, the flask is placed in an oil bath, and the control The temperature was 100°C, magnetically stirred and reacted for 4 hours. After the reaction was completed, stop heating. After the temperature was naturally cooled to room temperature, nitrogen gas was passed into the product at a rate of 40 mL / min. After stirring for 26 hours, the nitrogen gas was stopped, and The product is moved into a centrifuge, centrifuged at a speed of 5000r / min for 20min, the precipitate is collected, and washed 3 times with n-hexane to obtain pretreated molybdenum disulfide; then the above pretreated molybdenum disulfide, mercaptoethylamine and water are Add 1:2:5 into the beaker, place the beaker in an ultrasonic oscillator, disperse ultrasonically at 50KHz for 14h, then transfer to a centrifuge, cent...

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Abstract

The invention discloses a preparation method of a stable type compound nano anti-wearing agent, and belongs to the technical field of preparation of lubricating oil additives. The preparation method comprises the following steps: firstly, enabling nano molybdenum disulfide to react with n-butyl lithium to obtain pretreated molybdenum disulfide; carrying out ultrasonic dispersion on the pretreated molybdenum disulfide and mercaptoethylamine; inserting the n-butyl lithium into a molybdenum disulfide sheet layer; stripping the molybdenum disulfide sheet layer in an ultrasonic treatment process, so as to expose an active group of the molybdenum disulfide; loading the mercaptoethylamine, and reacting with maleic anhydride and ethanol, so as to increase the lipophilic property of the molybdenum disulfide; coating the surface of the molybdenum disulfide with maleate, so that molybdenum disulfide powder is difficultly gathered, and the stability and uniformity are improved; finally, stirring with modified nano boron nitride, dispersing, and drying to obtain the anti-wearing agent. The anti-wearing agent prepared by the method has relatively good anti-wearing performance, and also has excellent stability and dispersity; the anti-wearing agent has no layered precipitation and no nano agglomeration phenomenon; after the anti-wearing agent is added into lubricating oil, the lubricating performance can be remarkably improved; the anti-wearing agent has relatively good application prospect.

Description

technical field [0001] The invention discloses a preparation method of a stable composite nano anti-wear agent, belonging to the technical field of lubricating oil additive preparation. Background technique [0002] According to statistics from international authoritative organizations, friction has lost about one-third of the world's primary energy. Wear is one of the three most important forms of damage and failure of materials and equipment. Lubrication is the most important way to reduce friction, reduce or avoid wear. effective technology. In the traditional lubrication theory, lubrication is divided into liquid lubrication and boundary lubrication. The two metal surfaces that are in relative motion are completely separated by lubricating oil film, and there is no direct contact between the metals. This lubrication state is called liquid lubrication; as the load increases, the thickness of the oil film between the metal surfaces gradually decreases. When the load incre...

Claims

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Application Information

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IPC IPC(8): C10M125/26C10N30/06C10N30/04
CPCC10M125/26C10N2030/04C10N2030/06C10N2030/66C10N2030/72C10N2030/76
Inventor 唐林元孙冬王维
Owner 唐林元
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