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A kind of graphene lubricating oil composition and its preparation method and application

A lubricating oil composition, graphene technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of large-scale application limitations, uneven grafting rate of graphene, etc., to improve anti-sedimentation performance, excellent dispersion Stability, improve the effect of anti-friction and anti-wear performance

Active Publication Date: 2020-06-19
上海烯古能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods need to introduce some long-chain alkyl acids or organic amines, and the uneven grafting rate of graphene has greatly restricted the large-scale application of graphene in lubricating oil.

Method used

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  • A kind of graphene lubricating oil composition and its preparation method and application
  • A kind of graphene lubricating oil composition and its preparation method and application
  • A kind of graphene lubricating oil composition and its preparation method and application

Examples

Experimental program
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preparation example Construction

[0046] Another aspect of the embodiments of the present invention provides the preparation method of the aforementioned graphene lubricating oil composition, which includes:

[0047] Add unmodified graphene and dispersant to lubricating oil, and mix uniformly to form graphene lubricating oil coarse slurry;

[0048] Grinding and encapsulating the graphene lubricating oil coarse slurry to obtain a graphene lubricating oil composition.

[0049] As one of the preferred schemes, the mass ratio of the graphene to the dispersant is 1:1˜5:1.

[0050] Preferably, the graphene content in the graphene lubricating oil crude slurry is 0.1-5 wt%.

[0051] Further, the content of the dispersant in the graphene lubricating oil coarse slurry is 0.05-2wt%.

[0052]As one of the preferred solutions, the graphene sheet diameter is 0.02-10 μm, and the thickness is less than or equal to 10 nm, preferably 0.34-5 nm.

[0053] Further, the aforementioned graphene in the present invention can be obt...

Embodiment 1

[0075] (1) Take by weighing 1kg of white oil and put it into a stirred tank, weigh 3 g of monoalkenyl butene succinimide, 1 g of calcium stearate and 20 g of high-temperature heat-expandable graphene and add in the stirred tank successively, the stirring of the stirrer The speed is set to 700r / min, and premixing is carried out, so that the raw materials are mixed evenly, and the coarse slurry of graphene lubricating oil is obtained.

[0076] (2) The graphene lubricating oil coarse slurry obtained in step (1) is transferred in the shaft grinder, the rotor speed is set to 2700r / min, and the grinding time is set to 5h.

[0077] (3) Extrude the ground graphene lubricating oil coarse slurry from the sand mill, and directly package it to obtain the required graphene lubricating oil dispersion (that is, the graphene lubricating oil composition).

[0078] Weigh 1 kg of lubricating oil of a certain brand purchased, add 50 g of the graphene lubricating oil dispersion obtained in this ex...

Embodiment 2

[0086] (1) The lubricating oil mineral base oil that takes by weighing 1kg is put into stirring kettle, takes by weighing dienyl succinimide 16g, magnesium stearate 4g and mechanical exfoliation graphene 50g add in stirring kettle successively, the stirring tank Stirring rate is set to 1000r / min, carries out premixing, makes raw material mix evenly, makes graphene lubricating oil coarse slurry.

[0087] (2) The graphene lubricating oil coarse slurry obtained in step (1) is transferred in the disc grinder, and the rotor speed is set to 1500r / min, and the grinding time is set to 10h.

[0088] (3) Extrude the ground graphene lubricating oil coarse slurry from the sand mill, and directly package it to obtain the required graphene lubricating oil dispersion (that is, the graphene lubricating oil composition).

[0089] Weigh 1 kg of a certain brand of lubricating oil purchased, add 75 g of the graphene lubricating oil dispersion obtained in this example at room temperature, stir to ...

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Abstract

The invention discloses a graphene lubricating oil composition as well as a preparation method and application of the graphene lubricating oil. The graphene lubricating oil composition is prepared from the following raw materials in percentages by weight: 0.1-5wt% of unmodified graphene, 0.05-2wt% of a dispersing agent and lubricating oil. The preparation method comprises the steps of adding the unmodified graphene and the dispersing agent into lubricating oil and mixing evenly to form graphene lubricating oil coarse slurry; grinding and packaging the graphene lubricating oil coarse slurry to obtain the graphene lubricating oil composition. The excellent dispersion effect is achieved by adopting the graphene and the dispersing agent in the lubricating oil in a specific ratio as an anti-wear and anti-friction agent of the lubricating oil; and the graphene lubricating oil composition has excellent dispersion stability and excellent subsidence resistance and has the advantages of simple preparation method, high generalizability, wide raw material source and excellent environment.

Description

technical field [0001] The invention relates to a novel graphene lubricating oil additive, in particular to a graphene lubricating oil composition and its preparation method and application, and belongs to the technical field of graphene modified lubrication. Background technique [0002] With the rapid development of industrial technology and the improvement of the performance of mechanical equipment, higher requirements are put forward for the high-temperature bearing capacity and anti-friction and anti-wear performance of lubricating oil under high-speed and heavy-duty working conditions. At present, the traditional additives of lubricating oil products contain sulfur, phosphorus, chlorine and other elements that will pollute and damage the environment and equipment. Therefore, the research on new lubricating oil additives has been widely concerned by the lubricating oil industry. [0003] Graphene exfoliated from graphite has only one layer of carbon atoms, and each car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/06C10M161/00C10M177/00C10N30/04C10N30/06
CPCC10M141/06C10M161/00C10M177/00C10M2201/041C10M2203/1006C10M2207/126C10M2215/086C10M2217/06C10N2030/04C10N2030/06
Inventor 蒋建忠张凌孙淑华
Owner 上海烯古能源科技有限公司