Graphene lithium-based lubricating grease used under high extreme pressure condition and preparation method thereof

A technology of lithium-based lubricating grease and graphene, which is applied in the field of lubricating oil, can solve problems such as many steps, high energy consumption, and complex process of modified hydroxylated graphene, and achieve uniform performance, low energy consumption, and excellent high drop point Effect

Active Publication Date: 2021-07-30
GUANGXI UNIV +1
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of preparing modified hydroxylated graphene in this technical scheme is very complicated, with many steps and high energy consumption, which shows that there is still room for improvement on the basis of this method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphene lithium-based lubricating grease used under high extreme pressure condition and preparation method thereof
  • Graphene lithium-based lubricating grease used under high extreme pressure condition and preparation method thereof
  • Graphene lithium-based lubricating grease used under high extreme pressure condition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 is used for the raw material and the preparation of the graphene lithium base lubricating grease of high extreme pressure condition

[0043] Prepare raw materials by the following mass percentages:

[0044]

[0045] The three-dimensional structure graphene is a powder material with a honeycomb-like structure composed of two-dimensional graphene sheets, with a surface area of ​​1200m 2 / g, the percentage of heteroatoms is 15%, and the basic characteristics of its structure meet the requirements of technical standards DB 45 / T 1421-2016 and DB 45 / T 1425-2016. The preparation method of graphene lithium base lubricating grease is as follows:

[0046] (1) Stir and mix graphene, dispersant and a part of base oil evenly, make graphene account for 0.1% of the total mass of the mixed solution, use sand mill speed 2000r / min to grind for 0.1h to prepare graphene dispersion;

[0047] (2) Mix part of the base oil with the thickener, and heat up to 80°C to obtain the ...

Embodiment 2

[0052] Embodiment 2 is used for the raw material and the preparation of the graphene lithium base lubricating grease of high extreme pressure condition

[0053] Prepare raw materials by the following mass percentages:

[0054]

[0055] The above-mentioned three-dimensional graphene is a powder material with a honeycomb-like structure composed of two-dimensional graphene sheets, with a surface area of ​​1400m 2 / g, the percentage of heteroatoms is 10%, and the basic characteristics of its structure meet the requirements of technical standards DB 45 / T 1421-2016 and DB 45 / T 1425-2016. The preparation method of graphene lithium base lubricating grease is as follows:

[0056] (1) Graphene, dispersant and a part of base oil are stirred and mixed uniformly, so that Graphene accounts for 3% of the total mass of the mixed solution, and the Graphene dispersion is obtained by using a sand mill speed of 2000r / min for sand grinding for 5h;

[0057] (2) Mix part of the base oil with th...

Embodiment 3

[0062] Embodiment 3 is used for the raw material and the preparation of the graphene lithium base lubricating grease of high extreme pressure condition

[0063] Prepare raw materials by the following mass percentages:

[0064]

[0065] The above-mentioned three-dimensional graphene is a powder material with a honeycomb-like structure composed of two-dimensional graphene sheets, with a surface area of ​​1500m 2 / g, the percentage of heteroatoms is 12%, and the basic characteristics of its structure meet the requirements of technical standards DB 45 / T 1421-2016 and DB 45 / T 1425-2016. The preparation method of graphene lithium base lubricating grease is as follows:

[0066] (1) Stir and mix graphene, dispersant and a part of base oil evenly, make graphene account for 7% of the total mass of the mixed solution, use sand mill speed 2000r / min sand mill 8h to make graphene dispersion;

[0067] (2) Mix part of the base oil with the thickener, and heat up to 110°C to obtain the mi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses graphene lithium-based lubricating grease for a high extreme pressure condition. The graphene lithium-based lubricating grease is prepared from the following components in percentage by mass: 0.001-0.5% of graphene, 0.01-2.5% of a dispersing agent, 1.5-2.5% of an anti-wear agent, 1-1.5% of an anti-rust agent, 1-1.5% of an antioxidant, 10-20% of a lubricant, 5-15% of a thickening agent, 1-1.5% of a saponifying agent and the balance of base oil. The invention also discloses a preparation method of the graphene lithium-based lubricating grease. The graphene lithium-based lubricating grease disclosed by the invention has excellent lubricating and extreme pressure properties and a high dropping point, does not contain elements which are limited to use and discharge according to the environmental protection law, and is high-performance and environment-friendly lubricating grease.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to a graphene lithium-based lubricating grease for high extreme pressure conditions and a preparation method thereof. Background technique [0002] Grease is a kind of thick grease-like semi-solid, which is used in the friction parts of machinery to lubricate and seal, and also used on metal surfaces to fill gaps and prevent rust. It is mainly made of mineral oil (or synthetic lubricating oil) and thickener. The working principle of grease is that the thickener keeps the oil in the position that needs to be lubricated, and when there is a load, the thickener releases the oil to lubricate. [0003] With the advancement and development of science and technology, the requirements for the lubricating performance of grease are getting higher and higher, and the anti-wear performance of simple lubricating oil is difficult to meet the demand. Adding phosphate ester, sulfate ester...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N30/04C10N30/06C10N30/10C10N30/12C10N50/10
CPCC10M169/00C10M177/00C10M2201/041C10M2215/086C10M2223/045C10M2219/044C10M2207/026C10M2215/064C10M2207/281C10M2207/1285C10M2207/126C10M2201/087C10M2203/1006C10M2219/022C10M2213/062C10M2207/401C10M2207/282C10M2201/066C10M2211/08C10M2217/028
Inventor 梁立喆田植群欧阳天成沈培康林博张丽罗金琼万晓娜
Owner GUANGXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap