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Preparation method of ionized graphene oxide water-based lubricant additive

A lubricating additive and ionization technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve problems such as poor anti-wear ability, and achieve the effects of reducing surface wear, easy availability of raw materials, and good lubricity.

Inactive Publication Date: 2015-01-21
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the high friction coefficient of water in the metal friction pair and the poor anti-wear ability, it is necessary to develop high-performance additives to enhance its water-based lubricity to metal surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1 gram of graphite is pre-oxidized into graphene sheets in a microwave with a frequency of 2000MHz and a power of 2000W for 30 minutes; then the graphene sheets are soaked in H 2 o 2 and concentrated H 2 SO 4 Carry out oxidation and surface hydroxylation treatment in 50 milliliters of Piranha solutions prepared by volume ratio 3:7, temperature is controlled at 90 ℃, duration is 1 hour; ℃ for 2 hours to obtain graphene oxide; then add graphene oxide to 50 ml ethanol for ultrasonic dispersion, the power of ultrasonic dispersion is 600W, and the duration is 3 minutes to form a uniformly dispersed graphene oxide dispersion, add 1 ml 1-Ethyl-3-3-ethoxysilane imidazolium hexafluorophosphide modified graphene surface to obtain ionized graphene oxide. The water-based lubricating additive was prepared by mixing ionized graphene oxide and methylimidazolium ionic liquid at a mass ratio of 1:20.

Embodiment 2

[0022] 1 gram of graphite is pre-oxidized into graphene sheets in a microwave with a frequency of 2500MHz, a power of 2500W, and a time of 20 minutes; the graphene sheets are soaked in H 2 o 2 and concentrated H 2 SO 4 Carry out oxidation and surface hydroxylation treatment in 50 milliliters of Piranha solutions prepared by volume ratio 3:7, temperature is controlled at 90 ℃, duration is 1 hour; ℃ for 2 hours to obtain graphene oxide; then add graphene oxide to 50 ml of ethanol for ultrasonic dispersion, the power of ultrasonic dispersion is 500W, and the duration is 4 minutes to form a uniformly dispersed graphene oxide dispersion. 1-ethyl-3-3-ethoxysilane imidazole bromide was used to modify the surface of graphene to obtain ionized graphene oxide. The water-based lubricating additive was prepared by mixing ionized graphene oxide and propanyl imidazolium ionic liquid at a mass ratio of 1:18.

Embodiment 3

[0024] 1 gram of graphite is pre-oxidized into graphene sheets in a microwave with a frequency of 3000MHz and a power of 2800W for 15 minutes; the graphene sheets are soaked in H 2 o 2 and concentrated H 2 SO 4 Carry out oxidation and surface hydroxylation treatment in 50 milliliters of Piranha solutions prepared by volume ratio 3:7, temperature is controlled at 90 ℃, duration is 1 hour; ℃ for 2 hours to obtain graphene oxide; then add graphene oxide to 50 ml of ethanol for ultrasonic dispersion, the power of ultrasonic dispersion is 400W, and the duration is 5 minutes, to form a uniformly dispersed graphene oxide dispersion, add 1 The graphene surface was modified with 1-ethyl-3-3 ethoxysilane imidazole sulfide to obtain ionized graphene oxide. The water-based lubricating additive was prepared by mixing ionized graphene oxide and ethylimidazolium ionic liquid at a mass ratio of 1:16.

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Abstract

The invention discloses a preparation method of an ionized graphene oxide water-based lubricant additive. The method comprises the following three steps: synthesis of graphene oxide, graphene oxide modification, and nano composition of ionized graphene oxide and alkyl imidazole ionic liquid. The water-based lubricant additive prepared by the method disclosed by the invention can be directly used as anti-wear additive of water or an emulsion of water; the ionized graphene oxide water-based lubricant additive is simple in process, available in raw materials and low in cost, has good lubricating property and compatibility with water, is capable of reducing friction force and surface abrasion, and effectively prolonging the service life of engineering machinery or components in water.

Description

technical field [0001] The invention relates to surface modification technology, in particular to a preparation method of an ionized graphene oxide water-based lubricating additive. Background technique [0002] In recent years, water-based lubricants have been widely used in many fields such as hydraulic oil, cutting fluid, metal forming operations and oil extraction industry. The moving machinery and components working in the marine environment have attracted much attention due to the existence of friction that affects their work efficiency, durability and environmental compatibility. Compared with mineral grease lubricants, water-based lubricants have incomparable advantages, such as: low cost, good environmental compatibility and high thermal conductivity. In addition, due to the high friction coefficient of water in the metal friction pair and the poor anti-wear ability, it is necessary to develop high-performance additives to enhance its water-based lubricity to the m...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10M141/06C10M125/02C09C1/46C09C3/12C10N30/06
Inventor 莫宇飞黄伊琳刘宇恒
Owner GUANGXI UNIV
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