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Preparation method of graphene lubricating grease

A technology of olefin grease and grease, which is applied in the field of preparation of graphene grease, can solve the problems of poor mixing uniformity, high addition amount, and low utilization rate, and achieve the effect of reducing friction and wear and improving lubricating performance

Inactive Publication Date: 2013-09-11
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle size of ultrafine graphite and molybdenum disulfide powder used is micron size, and the disadvantages are poor mixing uniformity, low utilization rate and high addition amount

Method used

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  • Preparation method of graphene lubricating grease

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Experimental program
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Effect test

Embodiment 1

[0020] Add 1g of graphene to a solvent containing 0.02g of silicon-based coupling agent, treat it at a temperature of 60°C for 3h, filter and dry to obtain modified graphene powder; preheat the base oil of the grease, and then add the hydroxyl Stearic acid, calcium hydroxide aqueous solution and 0.1% of the above modified graphene are saponified at 105-110°C for 3 hours, then heated to 200-220°C for dehydration, quenched to a temperature of 150-170°C, then sheared, homogenized and combined After degassing, a graphene-based calcium-based grease is prepared.

Embodiment 2

[0022] 1g of graphene was added to a solvent containing 0.005g of titanium-based coupling agent, treated at a temperature of 30°C for 3h, filtered and dried to obtain modified graphene powder. Preheat the base oil of the grease, then add hydroxystearic acid and calcium acetate complex fatty acid calcium, saponify at 105-110°C for 3 hours, heat up to 200-220°C for dehydration, quench to 150-170°C, add 0.05% The modified graphene described above is then sheared, homogenized and degassed to obtain a graphene-based composite calcium grease.

Embodiment 3

[0024] 1g of graphene was added to a solvent containing 0.01g of aluminum-based coupling agent, treated at a temperature of 40°C for 8h, filtered and dried to obtain modified graphene powder. Preheat the base oil of the grease, then add hydroxystearic acid, sodium hydroxide aqueous solution, saponify at 105-110°C for 3 hours, add 0.004% of the above modified graphene, heat up to 200-220°C for dehydration, and then quench to The temperature is 150-170℃, and then shearing, homogenizing and degassing, to obtain graphene-based sodium-based grease.

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Abstract

The invention relates to a preparation method of a graphene lubricating grease. The graphene lubricating grease as a compound is prepared from the following components in parts by weight: 100 parts of lubricating grease and 0.001 to 0.1 part of surface-modified graphene powder, wherein the surface-modified graphene powder is prepared by using a solvent method; a surface-modified coupling agent accounts for 0.5wt%-2wt% of the graphene powder; the graphene is dispersed in a solvent containing the coupling agent at the temperature of 30 to 60 DEG C and then is filtered and dried, thereby obtaining the modified graphene powder. As the method is used, the defects of poor mixing uniformity, low utilization rate, high addition quantity and the like in the prior art are overcome. By utilizing the characteristics of the graphene which is ultrathin, ultrahard and superlubricant as well as in corrosion resistance and high-temperature resistance, based on the higher molecular modification of the surface of the graphene and the high-dispersion mixing of the graphene with a lubricating agent, the graphene-based lubricating product is prepared. The graphene-based lubricating product can be used for obviously improving the lubricating performance of the lubricating agent, so that the friction and the abrasion of a mechanical movement surface are reduced greatly. Thus, the effects of material saving and energy conservation are realized.

Description

Technical field [0001] The invention belongs to the technical field of lubrication, and particularly relates to a preparation method of graphene grease. Background technique [0002] According to the statistics of international authoritative organizations, the three major losses of metal material wear, corrosion, and fatigue account for about 30% of the total industrial output value. Friction and wear are common natural phenomena. Friction loses 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 effective technology to reduce friction and reduce or avoid wear. Development has good anti-wear performance, high load-bearing capacity, and has certain repair functions on worn surfaces. According to statistics from international authoritative organizations, the three major losses of metal material wear, corrosion and fatigue account for about 30% of the total industrial o...

Claims

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Application Information

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IPC IPC(8): C10M169/04C09C1/46C09C3/12C09C3/00C10N30/08C10N30/12C10N30/06
Inventor 程志林刘赞姚鑫刁国旺
Owner YANGZHOU UNIV
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