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A kind of water-based nano-lubricant based on graphene oxide rolling and preparation method thereof

A lubricant and graphene technology, applied in the field of rolling lubrication, can solve problems such as weakening wear resistance, and achieve the effects of reducing surface roughness, improving surface hardness, and reducing friction and wear.

Active Publication Date: 2019-10-25
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the prolongation of the friction time, the wear resistance of this type of lubricant shows a tendency to gradually weaken, which poses new challenges for the industrial application of this type of lubricant

Method used

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  • A kind of water-based nano-lubricant based on graphene oxide rolling and preparation method thereof
  • A kind of water-based nano-lubricant based on graphene oxide rolling and preparation method thereof
  • A kind of water-based nano-lubricant based on graphene oxide rolling and preparation method thereof

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preparation example Construction

[0034] Such as Figure 1-Figure 5 As shown, the present invention provides a water-based nano-lubricant based on graphene oxide rolling and a preparation method thereof.

[0035] The lubricant includes 88%-93% deionized water, 4%-6% polyphosphate, 1%-2% polyvinylpyrrolidone, 2%-4% oxide nanopowder and 0.01%-0.05% graphene oxide , the structure of the graphene oxide is as follows:

[0036]

[0037] The polyphosphate includes sodium hexametaphosphate and potassium hexametaphosphate, the oxide nanopowder includes boron oxide and titanium dioxide, and the particle diameter specification of the boron oxide and titanium dioxide is 40nm. After surface modification, the graphene oxide is a reagent-grade freeze-dried single-layer graphene oxide with a particle diameter of 50 nm.

[0038] A kind of preparation method based on graphene oxide rolling water-based nano-lubricant, described method comprises the steps:

[0039] 1) Firstly, polyphosphate is added into deionized water to ...

Embodiment 1

[0046] Step 1: Weigh 45.0 g of sodium hexametaphosphate, add 915 ml of constant-temperature deionized water at a temperature of 30° C., and stir evenly to obtain a primary solution;

[0047] Step 2: raise the temperature of the primary solution to 40°C and keep it at a constant temperature, add 19.8g of polyvinylpyrrolidone into it, stir vigorously for 30 minutes to obtain a clear liquid;

[0048] Step 3: Weighing 20.0 g of surface-modified titanium dioxide nanoparticles with a particle diameter of 40 nm, vigorously stirring for 30 minutes to uniformly disperse them in the above solution;

[0049] Step 4: Weigh 0.2g graphene oxide, add it to the above solution, and stir to make the graphene oxide disperse evenly;

[0050] Step 5: Ultrasonic dispersion in a water bath for 100 minutes to completely disperse the graphene oxide and prevent further agglomeration of nanoparticles to obtain a finished product.

Embodiment 2

[0052] Step 1: Weigh 45.0 g of sodium hexametaphosphate, add 895 ml of constant temperature deionized water at a temperature of 30° C., and stir evenly to obtain a primary solution;

[0053] Step 2: raise the temperature of the primary solution to 40°C and keep it at a constant temperature, add 19.8g of polyvinylpyrrolidone into it, stir vigorously for 30 minutes to obtain a clear liquid;

[0054] Step 3: Weighing 40.0 g of surface-modified titanium dioxide nanoparticles with a particle diameter of 40 nm, vigorously stirring for 30 minutes to uniformly disperse them in the above solution;

[0055] Step 4: Weigh 0.2g graphene oxide, add it to the above solution, and stir to make the graphene oxide disperse evenly;

[0056] Step 5: Ultrasonic dispersion in a water bath for 100 minutes to completely disperse graphene oxide and prevent further agglomeration of nanoparticles to obtain a finished product.

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Abstract

The invention provides a rolling-use water base nano lubricant based on GO and a preparation method thereof. The lubricant is composed of GO, an oxide nano powder, polyphosphates, polyvinylpyrrolidone, and deionized water. The preparation method includes the steps of: adding the polyphosphates to deionized water to completely dissolving the polyphosphates to obtain a primary solution; adding the polyvinylpyrrolidone to the solution with stirring to obtain a clear liquid; adding the oxide nano powder to perform surface modification and dispersion; and finally adding GO powder and performing water-bath ultrasonic dispersion so as to prevent aggregation of the GO and other nano particles. The lubricant has good stability and wear-resisting durability, excellent lubricating performance and cooling performance, and is very low in corrosion on a substrate. A lubricating film formed by the lubricant has strong adsorption property and good adhesion property, thereby inhibiting oxidization of surface of a roller well. The lubricant has excellent lubricating effects in both cold-rolling and hot-rolling status.

Description

technical field [0001] The invention belongs to the field of rolling lubrication, in particular to a water-based nano-lubricant based on graphene oxide rolling and a preparation method thereof. Background technique [0002] In the process of cold rolling and hot rolling of steel, lubrication is a very important link. Although traditional lubricants can meet the basic requirements of the production process, the lubricating performance decreases rapidly with the increase of temperature during use, and it is easy to cause environmental pollution. The improvement of the rolling process level is also increasing the demand for environmentally friendly high-performance lubricants. [0003] Polyphosphate has good lubrication adaptability, and at the same time, tribochemical reaction with iron oxide scale can form a layered lubricating film structure that can resist oxidation, reduce friction and wear, and improve the quality of the contact surface; the mechanism of action of oxide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02C10N30/06C10N30/10C10N30/12C10N40/24
CPCC10M173/02C10M2201/041C10M2201/062C10M2201/085C10M2201/087C10M2217/028C10N2030/06C10N2030/10C10N2030/12C10N2030/56C10N2040/24
Inventor 孔宁王一博刘珊珊曹建国
Owner UNIV OF SCI & TECH BEIJING
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