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Preparation method of graphene/zirconium oxide nano-grade composite lubricating material

A technology of nanocomposite and lubricating materials, which is applied in lubricating compositions, base materials, petroleum industry, etc. It can solve the problems of zirconia/graphene nanocomposite application research that has not been reported publicly and the preparation process is cumbersome, and achieves significant friction Chemical properties, simple process, improved dispersion and stability

Inactive Publication Date: 2016-01-06
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although scientific researchers have carried out the preparation methods of zirconia / graphene composites and applied them in different fields, these preparation methods are limited to electrochemical deposition and atomic layer deposition.
Recently, Wang Zonghua et al. used Na in the water-isopropanol system 2 S was used as a precipitating agent and a reducing agent to prepare graphene / zirconia composites, but the preparation process of this method is cumbersome
So far, there have been no published reports on the application of zirconia / graphene nanocomposites as lubricating oil additives prepared by one-step hydrothermal synthesis

Method used

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  • Preparation method of graphene/zirconium oxide nano-grade composite lubricating material

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Embodiment 1

[0033] Embodiment 1: A kind of preparation method of graphene / zirconia nanocomposite lubricating material

[0034] The raw materials are graphite oxide solution, zirconium oxychloride octahydrate, ultrapure water and hydrazine hydrate. The preparation process is as follows: firstly, the prepared graphite oxide solution is ultrasonically dispersed for 2 hours to obtain graphite oxide with only 1-2 layers of thickness. Then dilute its concentration to 2.33mg / mL; prepare a zirconium oxychloride solution with a concentration of 10mM at the same time, then measure 30mL each of the above-mentioned graphene oxide suspension and zirconium oxychloride solution, mix and stir evenly, And sonicate for 30 minutes, then add 1mL of hydrazine hydrate to the mixed solution, hydrothermally react at 180°C for 18h, wash the obtained black solid with ultrapure water, freeze-dry, and finally obtain graphene / oxide Zirconium nanocomposites.

Embodiment 2

[0035] Embodiment 2: a kind of preparation method of graphene / zirconia nano lubricating material

[0036] The raw materials are graphite oxide solution, zirconium oxychloride octahydrate, ultrapure water and hydrazine hydrate. The preparation process is as follows: firstly, the prepared graphite oxide solution is ultrasonically dispersed for 2 hours to obtain graphite oxide with only 1-2 layers of thickness. ene suspension, and then dilute its concentration to 2.33mg / mL; prepare a zirconium oxychloride solution with a concentration of 10mM at the same time, then measure 40mL of the above-mentioned graphene oxide suspension and 20mL of the above-mentioned zirconium oxychloride solution, and The two were mixed and stirred evenly, and ultrasonically treated for 30 minutes, then 1 mL of hydrazine hydrate was added to the mixed solution, and the hydrothermal reaction was carried out at 180 °C for 18 hours, and the obtained black solid was washed with ultrapure water, freeze-dried, a...

Embodiment 3

[0037] Embodiment 3: a kind of preparation method of graphene / zirconia nano lubricating material

[0038] The raw materials are graphite oxide solution, zirconium oxychloride octahydrate, ultrapure water and hydrazine hydrate. The preparation process is as follows: firstly, the prepared graphite oxide solution is ultrasonically dispersed for 2 hours to obtain graphite oxide with only 1-2 layers of thickness. ene suspension, and then dilute its concentration to 2.33mg / mL; prepare a zirconium oxychloride solution with a concentration of 10mM; then measure 45mL of the above-mentioned graphene oxide suspension and 15mL of the above-mentioned zirconium oxychloride solution, and The two were mixed and stirred evenly, and ultrasonically treated for 30 minutes, then 1 mL of hydrazine hydrate was added to the mixed solution, and the hydrothermal reaction was carried out at 180 °C for 18 hours, and the obtained black solid was washed with ultrapure water, freeze-dried, and finally A gra...

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Abstract

The invention discloses a preparation method of a graphene / zirconium oxide nano-grade composite lubricating material. The method comprises the following steps: a graphite oxide solution is subjected to ultrasonic treatment for 1-2h, such that a uniformly dispersed graphene oxide suspension liquid with thickness of 1-2 layers is obtained; the suspension liquid is diluted with ultrapure water; zirconium oxychloride octahydrate is dissolved in ultrapure water, such that a zirconium oxychloride solution is prepared; the diluted graphene oxide suspension liquid is mixed with the zirconium oxychloride solution, and the mixture is uniformly mixed by stirring; the mixture is subjected to ultrasonic treatment for 10-30min; hydrazine hydrate is added into the mixed liquid, and a reaction is carried out under a hydrothermal condition, wherein a reaction temperature is 150-220 DEG C and a reaction time is 18-24h; a black solid product obtained after the reaction is repeatedly washed with ultrapure water, and is subjected to freeze drying for 6-12h, such that the graphene / zirconium oxide nano-grade composite lubricating material with zirconium oxide nano-particles uniformly distributed on graphene surface is obtained. The preparation method provided by the invention has the advantages of simple process, easy operation, low cost, high product purity, and the like.

Description

technical field [0001] The invention belongs to the field of inorganic nanocomposite materials, and relates to a preparation method of a graphene / zirconia nanocomposite lubricating material. Background technique [0002] In 2004, a research team led by Professor Andre Geim and Dr. Kostya Novoselov of the University of Manchester in the UK first used a simple micromechanical exfoliation method to obtain graphene with a single atomic layer thickness, thus leading a revolution in this field. The excellent properties and wide application prospects of graphene have aroused the unprecedented research enthusiasm of scientific researchers. [0003] Graphene is a two-dimensional nanomaterial with a thickness of only one carbon atom, which is composed of sp 2 Hybridized carbon atoms are arranged in a honeycomb hexagonal planar crystal, which has high specific surface area, strength, hardness, Young's modulus, strong chemical inertness and structural stability. Its unique two-dimensio...

Claims

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Application Information

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IPC IPC(8): C10M103/00C10N30/06
Inventor 王金清黄敬霞白国英杨生荣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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