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Graphene oxide-polymeric microsphere water-based lubricant additive and preparation method thereof

A technology of lubricating additives and polymers, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of limited application range, large friction coefficient, poor anti-wear performance, etc. The effect of improving the anti-wear performance

Inactive Publication Date: 2015-11-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current water-based lubricants have disadvantages such as large friction coefficient and poor anti-wear performance, which severely limit their application range.

Method used

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  • Graphene oxide-polymeric microsphere water-based lubricant additive and preparation method thereof
  • Graphene oxide-polymeric microsphere water-based lubricant additive and preparation method thereof
  • Graphene oxide-polymeric microsphere water-based lubricant additive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A kind of preparation method of graphene oxide-polymethyl methacrylate microsphere water-based lubricating additive, comprises the steps:

[0032] (1) Prepare graphene oxide powder by improving the Hummers method: Weigh 2.4g of natural flake graphite and 3g of sodium nitrate and place it in an Erlenmeyer flask, add 140ml of concentrated sulfuric acid to it, and place it in an ice-water bath at 0°C for 30 minutes; then Slowly add 12g of potassium permanganate under stirring conditions, and continue to stir for 3 hours; then raise the temperature to 35°C and continue to stir for 30 minutes, then slowly add 600ml of deionized water dropwise, and after the addition is completed, the temperature rises to 98°C for 15 minutes. After the reaction, add 10ml of hydrogen peroxide dropwise until the solution changes color, vacuum filter, centrifuge and wash with deionized water at a speed of 10000r / min for 5min until the pH value is 7, continue centrifuging for 4 times, take the upp...

Embodiment 2

[0038] A preparation method for graphene oxide-polyethylacrylate microsphere water-based lubricating additive, comprising the steps:

[0039] (1) Prepare graphene oxide powder by improving the Hummers method: Weigh 0.6g of natural flake graphite and 1g of sodium nitrate in a Erlenmeyer flask, add 35% concentrated sulfuric acid to it, and place it in an ice-water bath at 0°C for 30min; then Slowly add 3g of potassium permanganate under stirring conditions, and continue to stir for 3 hours; then raise the temperature to 35°C and continue to stir for 30 minutes, then slowly add 200ml of deionized water dropwise, and after the addition is completed, the temperature rises to 98°C for 15 minutes. After the reaction is over, add 2ml of hydrogen peroxide dropwise until the solution changes color, vacuum filter, centrifuge and wash with deionized water at a speed of 12000r / min for 3min until the pH value is 7, continue to centrifuge for 3 times, take the supernatant of the upper layer, ...

Embodiment 3

[0044] A kind of preparation method of graphene oxide-polystyrene microsphere water-based lubricating additive, comprises the steps:

[0045] (1) Prepare graphene oxide powder by the improved Hummers method: Weigh 0.6g of natural flake graphite and 0.6g of sodium nitrate into a three-necked flask, add 40ml of concentrated sulfuric acid to it, and place it in an ice-water bath at 2°C for 60min; Then slowly add 2g of potassium permanganate under stirring conditions, and continue to stir for 5 hours; then raise the temperature to 35°C and continue to stir for 60 minutes, then slowly add 250ml of deionized water dropwise, after the addition is completed, the temperature rises to 98°C for 30 minutes , after the reaction, add 2ml of hydrogen peroxide dropwise until the solution changes color, vacuum filter, centrifuge and wash with deionized water at a speed of 11000r / min for 4min until the pH value is 7, continue centrifuging for 5 times, take the supernatant of the upper layer, and...

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Abstract

The invention belongs to the field of lubricant additives, and particularly relates to a graphene oxide-polymeric microsphere water-based lubricant additive as well as a preparation method of the lubricant additive. The preparation method comprises the following steps: preparing graphene oxide powder and a polymeric microsphere emulsion, wherein the polymeric microsphere emulsion is the polyacrylate microsphere emulsion or polystyrene microsphere emulsion; adding the graphene oxide powder into the polymeric microsphere emulsion, conducting ultrasonic vibration until the graphene oxide powder is completely dispersed to obtain a graphene oxide-polymeric microsphere compound emulsion, and diluting the graphene oxide-polymeric microsphere compound emulsion to be with the mass fraction of 0.1-2% through the deionized water, so as to obtain the graphene oxide-polymeric microsphere water-based lubricant additive. The graphene oxide-polymeric microsphere water-based lubricant additive is adopted to replace the conventional oil-based lubricant, so that the friction coefficient can be reduced, the abrasion resistance can be improved, the environmental pollution can be reduced, the cost can be reduced, the use stability can be improved, and meanwhile, various efficacies of cooling, rust prevention, corrosion inhibition and the like can be achieved.

Description

technical field [0001] The invention belongs to the field of lubricating additives, in particular to a graphene oxide-polymer microsphere water-based lubricating additive and a preparation method thereof. Background technique [0002] According to statistics, about 30% to 50% of energy loss is caused by friction and wear between interacting surfaces. Lubricants can reduce frictional resistance and wear between components, and play a key role in improving energy utilization and reducing energy waste. With the development of the petroleum industry, the development of oil-based lubricants has become more and more mature, and has been widely used in various fields. However, with the global energy crisis and increasingly serious environmental pollution, the development of oil-based lubricants has been partially restricted. At the same time, water-based lubricants have developed rapidly due to their rich resources, low pollution, and low cost. However, the current water-based lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10N30/06
Inventor 王勇陈琛
Owner WUHAN UNIV OF TECH
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