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Graphene oxide lubricant and preparing method thereof

A kind of ene lubricant and graphene technology, which is applied in the field of oil-soluble graphene oxide lubricant and its preparation, can solve the problems of increasing interlayer friction and increasing commensurability, and achieve significant fuel saving, low cost and high yield high effect

Inactive Publication Date: 2017-05-24
王禹丁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the introduction of defects will increase its commensurability, thereby increasing the interlayer friction

Method used

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Examples

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Effect test

preparation example Construction

[0018] The preparation method of graphene oxide lubricant of the present invention, step is as follows:

[0019] 1) Synthesis of graphene oxide

[0020] Put graphite powder and concentrated nitric acid in a container, stir evenly, add sodium sulfate and potassium permanganate and react for 2 to 3 hours under vacuum at 90°C to 100°C, add hydrogen peroxide and butylamine, and adjust the pH value to 6. Continue to stir for 20 minutes, add high base value calcium salicylate, stir, continue to react at a temperature of 100-120°C for 3-4 hours, cool down, and obtain a brown graphene oxide mixture;

[0021] 2) Synthesis of graphene oxide lubricant

[0022] Mix the graphene oxide mixture prepared above with phosphorus pentasulfide and butanol, stir evenly, and react for 4 to 5 hours at a temperature of 100-120°C and a pressure of 0.1MPa; cool to 40-50°C, add tertiary carbon primary amine, Increase the temperature to 200-210°C, and continue the reaction for 3-4 hours under the same p...

Embodiment 1

[0035] 1) Synthesis of graphene oxide

[0036] Put graphite powder and concentrated nitric acid in a container, stir evenly, then add sodium sulfate and potassium permanganate to react for 2 hours at 100°C under vacuum (pressure = 0.10MPa), then add hydrogen peroxide and butylamine to adjust the pH value =6, continue to stir for 20 minutes, then add high alkali value alkyl salicylate calcium, stir, continue to react for 3 hours at 120 ℃ at temperature, cool down, obtain brown graphene oxide mixture; By mass ratio, graphite powder: concentrated nitric acid : Sodium sulfate: Potassium permanganate: Hydrogen peroxide: Butylamine: The mass ratio of high base value alkyl salicylate calcium=1:10:10:5:5:20:20.

[0037] 2) Synthesis of graphene oxide lubricant

[0038] Mix 5 grams of the graphene oxide mixture prepared above with 10 grams of phosphorus pentasulfide and 100 grams of butanol, stir evenly, and react for 4 hours at a temperature of 100°C and a pressure of 0.1MPa; cool to...

Embodiment 2

[0041] 1) Synthesis of graphene oxide

[0042] Put graphite powder and concentrated nitric acid in a container, stir evenly, then add sodium sulfate and potassium permanganate to react for 3 hours under vacuum (pressure = 0.10MPa) at 90°C, then add hydrogen peroxide and butylamine to adjust the pH value =6, continue to stir for 20 minutes, then add high alkali value alkyl salicylate calcium, stir, continue to react for 4 hours at 110 ℃ at temperature, cool down, obtain brown graphene oxide mixture; By mass ratio, graphite powder: concentrated nitric acid : Sodium sulfate: Potassium permanganate: Hydrogen peroxide: Butylamine: The mass ratio of high alkali value alkyl salicylate calcium=1:14:14:7:7:25:25.

[0043] 2) Synthesis of graphene oxide lubricant

[0044]Mix 10 grams of the graphene oxide mixture prepared above with 25 grams of phosphorus pentasulfide and 250 grams of butanol, stir evenly, and react for 5 hours at a temperature of 120°C and a pressure of 0.1MPa; cool t...

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Abstract

The invention discloses graphene oxide lubricant and a preparing method thereof. The preparing method includes the steps that graphite used as a basis reacts with concentrated nitric acid, sodium sulfate and potassium permanganate, hydrogen peroxide, butyl amine and high-base-number alkyl calcium salicylate are added, the method of adjusting the pH value is adopted to obtain graphene oxide beneficial for good reaction in the next step, then graphene oxide reacts with phosphorus pentasulfide, octanol and tertiary carbon primary amine, and a two-step partial pressure decompression method is adopted to prepare the graphene oxide lubricant high in oil solubility and wear resistance. The production method is simple, low in cost, high in oil solubility and high in yield.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to an oil-soluble graphene oxide lubricant and a preparation method thereof. Background technique [0002] In 2014, the Argonne National Laboratory of the U.S. Department of Energy applied the two-dimensional material single-atom-thick graphene to steel balls and steel disks. The single-layer graphene they found lasted more than 6,500 "wear cycles," a dramatic improvement over conventional lubricants such as graphite or molybdenum disulfide. In contrast, a lubricant with 1,000 layers of conventional graphite lasts only about 1,000 wear cycles. [0003] The nano-friction force between graphene layers mainly depends on the lattice commensurability between graphene layers. Among them, the sliding friction between graphene layers formed by non-commensurate stacks is very small, and even superlubricating phenomenon occurs. Some literatures suggest that under the "vacuum" ...

Claims

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Application Information

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IPC IPC(8): C10M125/02C10M159/12C10M163/00C10N30/06C10N30/10C10N40/25
CPCC10M125/02C10M159/12C10M163/00C10M2201/041C10M2201/14C10N2030/06C10N2030/10C10N2030/41C10N2030/42C10N2030/43C10N2030/54C10N2030/64C10N2040/10
Inventor 王严绪王禹丁
Owner 王禹丁
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