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Method for preparing graphene lubricating oil additive

A lubricating oil additive and graphene technology, applied in the field of lubricating oil, can solve the problems of short service life and poor anti-wear performance of lubricating oil, improve anti-wear performance and bearing capacity, simple production process, excellent dispersibility and stability Effect

Active Publication Date: 2016-02-03
TANGSHAN XIRUN SCI TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of short service life and poor wear resistance of traditional lubricating oils, the present invention provides a method for preparing graphene lubricating oil additives. Nano-graphene is used as a lubricating oil additive and applied to lubricating oils, which has protection and repair functions, namely Form a protective film on the surface of the inner wall of the machine, which cannot penetrate even hydrogen atoms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of graphene lubricating oil additive, carry out according to the following steps:

[0024] (1) Centrifuge the graphene oxide solution at a centrifugal force of 4000×g, take the supernatant, and dry at low temperature to obtain a fluffy few-layer graphene oxide powder.

[0025] (2) Heating the graphene oxide powder obtained in step (1) under vacuum until constant dryness, and the heating temperature is 40-200°C.

[0026] (3) Mix the graphene oxide powder obtained after the treatment in step (2) with a dispersant and base oil, and the mass proportions are as follows: 0.1 g of graphene oxide powder, 0.1 g of oleic acid, and 99.8 g of base oil; After the components are mixed evenly, they are placed in a high-temperature and high-pressure reactor for treatment. The treatment temperature is 150°C, and the absolute pressure is 1.5Mpa. After constant temperature for 1 hour, it is naturally cooled to room temperature, and the reaction product is take...

Embodiment 2

[0029] A kind of preparation method of graphene lubricating oil additive, carry out according to the following steps:

[0030] (1) Centrifuge the graphene oxide solution at a centrifugal force of 3500×g, take the supernatant, and dry it at low temperature to obtain a fluffy few-layer graphene oxide powder.

[0031] (2) Heating the graphene oxide powder obtained in step (1) under vacuum until constant dryness, and the heating temperature is 40-200°C.

[0032] (3) Mix the graphene oxide powder obtained after the treatment in step (2) with a dispersant and base oil, and the mass ratio is as follows: graphene oxide powder 10g, oleic acid 10g, base oil 80g; each component is mixed After uniformity, place it in a high-temperature and high-pressure reactor for treatment. The treatment temperature is 180°C, and the absolute pressure is 1.5Mpa. After constant temperature for 1 hour, it is naturally cooled to room temperature, and the reaction product is taken out. After centrifugation,...

Embodiment 3

[0036] A kind of preparation method of graphene lubricating oil additive, carry out according to the following steps:

[0037] (1) Centrifuge the graphene oxide solution at a centrifugal force of 4000×g, take the supernatant, and dry at low temperature to obtain a fluffy few-layer graphene oxide powder.

[0038] (2) Heating the graphene oxide powder obtained in step (1) under vacuum until constant dryness, and the heating temperature is 40-200°C.

[0039] (3) Mix the graphene oxide powder obtained after the treatment in step (2) with a dispersant and base oil, and the mass ratio is as follows: graphene oxide powder 20g, oleic acid 20g, base oil 60g; each component is mixed After uniformity, place it in a high-temperature and high-pressure reactor for treatment. The treatment temperature is 150°C, the absolute pressure is 1.5Mpa, and the temperature is maintained for 1.5 hours. After cooling to room temperature, the reaction product is taken out, and after centrifugation, lipop...

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Abstract

The invention relates to a method for preparing a graphene lubricating oil additive and belongs to the technical field of lubricating oil. An oxidized graphene solution is subjected to centrifugal separation at low speed, supernatant is obtained, and the supernatant is dried at low temperature to obtain oxidized graphene powder; the oxidized graphene powder is heated in vacuum to be constantly dry, oxidized graphene powder is obtained and mixed with a dispersing agent and basic oil, after uniform mixing, the mixture is placed in a high-temperature high-pressure reaction kettle to be processed, oleophylic graphene is obtained, and the graphene lubricating oil additive is obtained by mixing the oleophylic graphene, the dispersing agent and the basic oil or mixing the oleophylic graphene with finished lubricating oil. The technology is simple and convenient, cost is reduced, all components have excellent dispersity and stability, and the problem about long-time stability of nano additives is solved. When lubricating oil where the additive is added is applied to mechanical operation, the abrasion resistance and bearing capacity of mechanical devices can be improved, and meanwhile the surfaces of the mechanical devices can be protected and highly repaired.

Description

technical field [0001] The invention relates to a preparation method of a graphene lubricating oil additive, belonging to the technical field of lubricating oil. Background technique [0002] As an important petroleum product with high technical content, lubricating oil has a wide range of applications and is used in almost all mechanical fields. The quantity and types of lubricating oil products in our country are constantly increasing, but there is still a big gap in product quality and grade compared with developed countries. Therefore, improving product quality and product grade is an urgent need for my country's lubricating oil industry. [0003] Lubricating oil generally consists of two parts: base oil and additives. The quality of base oil is the foundation of lubricating oil, the quality and performance of additives are the essence of lubricating oil, the quality and performance of additives and the ratio of adding directly affect the performance of lubricating oil....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/02C10M177/00C10N30/06
Inventor 吴洪鹏孟英庞伟侯林艳陈锋陈东立
Owner TANGSHAN XIRUN SCI TECH DEV CO LTD
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