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Inorganic fullerene molybdenum disulfide/graphene composite lubricant and preparation method thereof

A fullerene molybdenum disulfide and graphene composite technology, applied in lubricating compositions, petroleum industry, base materials, etc., can solve problems such as differences in structure and preparation method, and achieve extended lubrication effective time, good effect, and preparation method. easy effect

Active Publication Date: 2015-10-07
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these reports are mainly based on the electrochemical properties or catalytic properties of the material, and have not been used as a solid lubricant, and different application purposes will lead to significant differences in material composition, structure and preparation methods

Method used

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  • Inorganic fullerene molybdenum disulfide/graphene composite lubricant and preparation method thereof
  • Inorganic fullerene molybdenum disulfide/graphene composite lubricant and preparation method thereof
  • Inorganic fullerene molybdenum disulfide/graphene composite lubricant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1 part of graphene (single-layer graphene accounts for 95%, specific surface area 3800m 2 / g) adding 2000 parts of glycerol-water (mass ratio 1:5) mixed solvent containing 2% tetradecyltrimethylammonium bromide in mass concentration, adjusting system pH=2 with hydrochloric acid, and ultrasonically dispersing for 10 min; In the ice-bath ultrasonic state, add 12 parts of magnesium molybdate, 108 parts of sodium sulfide, and 5 parts of thioacetamide to the solution in sequence, and then move the system to a pressure-resistant reactor. After the system is sealed, replace the upper atmosphere with 0.2 MPa hydrogen gas, control the temperature rise rate of the reactor to 20°C / min, rise to the system temperature of 420°C, keep it warm for 1.2h, cool down, release the pressure, filter the system to obtain a black solid, rinse it with deionized water, and dry it, that is Inorganic fullerene molybdenum disulfide / graphene composite lubricant was obtained.

Embodiment 2

[0027] 1 part of graphene (single-layer graphene accounts for 96%, specific surface area 3910m 2 / g) adding 3000 parts of glycerin-water (mass ratio 1:10) mixed solvent containing 5% tetradecyltrimethylammonium bromide in mass concentration, adjusting system pH=2.5 with hydrochloric acid, and ultrasonically dispersing for 15 minutes; In the ice-bath ultrasonic state, add 20 parts of sodium molybdate, 280 parts of sodium sulfide, and 15 parts of thioacetamide to the solution in sequence, and then move the system to a pressure-resistant reactor. After the system is sealed, replace the upper atmosphere with 1MPa Hydrogen, control the heating rate of the reactor to 25°C / min, raise the temperature of the system to 300°C, keep it warm for 1.5h, cool down, release the pressure, filter the system to obtain a black solid, rinse it with deionized water, and dry it to obtain Inorganic fullerene molybdenum disulfide / graphene composite lubricant.

Embodiment 3

[0029] 1 part of graphene (single-layer graphene accounts for 95%, specific surface area 3800m 2 / g) adding 4000 parts of glycerol-water (mass ratio 1:15) mixed solvent containing 5% tetradecyltrimethylammonium bromide in mass concentration, adjusting system pH=3 with hydrochloric acid, and ultrasonically dispersing for 10 min; In the ice-bath ultrasonic state, add 40 parts of ammonium molybdate, 360 parts of ammonium sulfide, and 40 parts of thioacetamide to the solution in sequence, and then move the system to a pressure-resistant reactor. After the system is sealed, replace the upper atmosphere with 2MPa Hydrogen, control the heating rate of the reactor to 30°C / min, rise to the system temperature of 200°C, keep warm for 2 hours, cool, release the pressure, filter the system to obtain a black solid, rinse it with deionized water, and dry it to obtain the inorganic Fullerene-like molybdenum disulfide / graphene composite lubricant.

[0030] In the embodiment, the friction and ...

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Abstract

The invention relates to an inorganic fullerene molybdenum disulfide / graphene composite lubricant and a preparation method thereof. The mass ratio of molybdenum disulfide to graphene in the lubricant is 1:(0.0005-0.1), the particle size of the inorganic fullerene molybdenum disulfide is 30-300nm, and the molybdenum disulfide is uniformly dispersed on the graphene surface or in the defect clearances and bonded firmly. The preparation method is convenient and controllable for operation. Under the synergistic actions of the molybdenum disulfide and graphene, the prepared composite lubricant has excellent lubricating property, and has very important application values in the fields of solid lubricating materials, precision machinery, aerospace and the like.

Description

1. Field of invention [0001] The invention relates to the field of solid lubricants, in particular to an inorganic fullerene molybdenum disulfide / graphene composite lubricant and a preparation method thereof. 2. Background technology [0002] A considerable proportion of energy consumption on the earth is caused by friction and wear. For this reason, people are always looking for new anti-friction lubricating materials. Molybdenum disulfide is a solid lubricating material with excellent lubricating properties. In recent years, with the continuous development of nanotechnology, molybdenum disulfide with different microscopic structures has emerged, and its performance varies greatly. The spherical structure of inorganic fullerene molybdenum disulfide can play a very good anti-friction effect through rolling, deformation, sheet shear slip, etc. during the friction process, but the contact surface with the interface is less during the friction process , the adhesion is low, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M103/06C10M177/00C10N30/06
Inventor 徐玉福郑晓静彭玉斌周琪胡献国
Owner HEFEI UNIV OF TECH
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