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A water-based 2d/0d nanocomposite lubricant

A nano-composite material, lubricant technology, applied in water-based nano-lubrication. It can solve the problems of little research on performance, and achieve the effect of easy repeated dispersion, good anti-wear performance, and improved material properties.

Active Publication Date: 2021-07-16
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large number of previous studies focused on the friction and wear properties of 2D / 0D-graphene / inorganic nanoparticles under dry friction or oil-based lubricant systems, but little research has been done on their performance in water-based lubricants.
At the same time, due to the strong hydrophobicity of graphene, it cannot be dispersed in ionized water and cannot form composite nano-water-based lubricants with inorganic nanoparticles.

Method used

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  • A water-based 2d/0d nanocomposite lubricant
  • A water-based 2d/0d nanocomposite lubricant
  • A water-based 2d/0d nanocomposite lubricant

Examples

Experimental program
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preparation example Construction

[0031] The invention provides a preparation method of a 2D / 0D nanocomposite water-soluble lubricant applied in the field of machinery manufacturing, especially a mobile mechanical device and a kinematic pair of an engine used in industrial production. This method flow includes:

[0032] (1), the invented 2D / 0D nano-lubricant is composed of 2D nano-sheets and 0D nanoparticles at a mass ratio of 1:0 to 1:1 (or 1:1 to 1:0) to form a composite nanomaterial and dissolve in Ionized water is obtained (excluding the case where one of the substances is 0). The 2D nanoflakes used in the present invention are mainly graphene (G), reduced graphene oxide (RGO), graphene oxide (GO) and graphite-carbon nitride (g-C 3 N 4 one or more of );

[0033] (2) 2D nanoflakes can be synthesized by liquid phase redox method (improved Hemer synthesis method) or solid phase heat treatment method. The prepared multilayer 2D planar layered material is further exfoliated into 2D nanosheets with a thickne...

example 1

[0066] 2D graphene oxide is prepared as follows:

[0067] First, natural graphite powder was oxidized into graphite oxide in a highly acidic environment of sulfuric acid, nitric acid, and potassium chlorate using a modified Hemmer method. After the oxidation reaction, the graphite oxide solution was filtered and washed repeatedly with deionized water until the pH value of the filtrate was between 6 and 8. Followed by ultrasonic treatment for 30 minutes, 2D graphene oxide was obtained. Figure 1 and Figure 2 points AFM images of graphene oxide and its cross-sectional morphology are shown respectively. according to Figure 1 and figure 2, The synthesized graphene oxide has a micron-scale lateral dimension and a thickness of about 0.5 nm, which facilitates the exfoliation of graphene oxide into 2D nanosheets. also, Figure 3 The TEM image shows typical 2D graphene oxide nanoflakes with micron-scale lateral dimensions.

example 2

[0069] 2D / 0D-graphene oxide / nanoparticles (preferably TiO 2 or Al 2 o 3 ) The suitable concentration of the composite material in the deionized water is 0.1%-2% by weight. The composite of 2D graphene oxide nanoflakes and 0D inorganic nanoparticles is carried out as follows:

[0070] Synthetic or commercial inorganic nanoparticles were added to pH-controlled deionized water. Stirring was continued for 30 minutes to disperse into deionized water, followed by 30 minutes of sonication. Similarly, graphene oxide synthesized by the modified Hemer method was added to pH-controlled deionized water, and then the graphene oxide solution was slowly added to the nanoparticle suspension. Figure 4 TEM image showing composite 2D graphene oxide and TiO 2 nanoparticles.

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Abstract

The invention discloses a water-based 2D / 0D nanocomposite lubricant, which comprises 0.02-2wt.% of 2D nanometer flakes, 0.02-2wt.% of OD nanoparticles and 96-99.6wt.% of deionized Mixed and stirred with water; wherein, the 2D nanosheets are selected from one or more 2D nanosheets containing C and O functional groups, and the OD nanoparticles are selected from one or more 2D nanosheets containing Al, Fe, Cu, Zr , Zn or Ti and O functional group metal oxide particles; the 2D nanoflakes and 0D nanoparticles form a 2D / 0D nanocomposite. It combines the excellent characteristics of 2D and 0D nanomaterials to present a synergistic effect. It has the advantages of good stability, easy repeated dispersion, low friction coefficient, good anti-wear performance, and environmental friendliness. It can replace traditional oil-based lubricant systems to achieve low energy consumption. consume and prolong the life of the device.

Description

technical field [0001] The invention relates to a water-soluble nano-lubricant of 2D / 0D nano-composite material, which can be applied to various industrial manufacturing, mechanical devices and engine friction pairs to realize low-cost, high-performance and environment-friendly water-based nano-lubrication. Background technique [0002] In the industrial field, lubricants play a vital role in reducing mechanical damage related to friction and wear, energy efficiency and productivity, but there are a series of problems such as difficult recycling and easy environmental pollution after lubricants are used. Therefore, the development of environmentally friendly water-soluble lubricants has become an important topic in the industrial field. At present, the tribological mechanism of various types of lubricants under specific environmental and test conditions has been confirmed. Traditionally, water-oil emulsions containing various solid and liquid lubricants and chemical additiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02C10N30/06C10N30/04
CPCC10M173/02C10M2201/041C10M2201/062C10M2201/105C10M2209/104C10M2209/109C10N2030/04C10N2030/06C10N2030/64
Inventor 黄含姜正义焦四海王连洲吴辉何安顺尹晶湖
Owner BAOSHAN IRON & STEEL CO LTD
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