Graphene/molybdenum disulfide composite lubricant and preparation method thereof

A compound lubricant and molybdenum disulfide technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of limited addition amount, high cost of graphene preparation, and general anti-friction effect, so as to reduce the possibility of adhesive wear High performance, guaranteed long-term performance, and excellent thermal conductivity
CN106811264AInactive Publication Date: 2017-06-09SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
Publication Date
2017-06-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a graphene / molybdenum disulfide composite lubricant and preparation and application thereof; the preparation method comprises the steps of 1) mixing in a solvent, graphene oxide solution, a molybdenum source and a surfactant at room temperature according to the mass ratio of 1:(10-20):(20-35), adding a sulfur source, stirring well to obtain a precursor solution having a molar ratio of the sulfur source to the molybdenum source being greater than 2:1; 2) adding the precursor solution of step 1) into a polytetrafluoroethylene reactor at 180-240 DEG C, preferably at 210-240 DEG C, and reacting for 12-36 h, preferably for 24-36 h; 3) washing the suspension and filtered material of step 2) with deionized water 3 times and absolute ethyl alcohol 3 times, and drying in a vacuum oven at 60 DEG C for 12 h; 4) thermally treating the product of step 3) in a quartz boat under the protection of an inert gas to obtain the graphene / molybdenum disulfide composite lubricant. The graphene / molybdenum disulfide composite lubricant of the invention has excellent antifriction property and is an excellent green environment-friendly basic oil additive.
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Description

technical field

[0001] The invention relates to the field of solid lubricants, in particular to a graphene / molybdenum disulfide composite lubricant and a preparation method thereof. Background technique

[0002] Friction and wear are ubiquitous natural phenomena. According to statistics, about 1 / 3-1 / 2 of the energy used in the world is lost in friction. If the frictional force in the working of mechanical equipment can be reduced and the useless frictional loss can be reduced, then energy saving can be realized.

[0003] Molybdenum disulfide is a transition metal sulfide with a typical sandwich layered structure. The interlayer force of its crystal structure is relatively weak, and it is easy to slip, and its exposed sulfur atoms can form a strong bond with the metal. Adhesion, so as to adhere to the metal surface, reduce friction and wear, thus play a role in lubrication. Its disadvantages are poor thermal conductivity, low friction coefficient, and easy precipitation an...

Claims

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