Graphene/Fe2O3 nanometer particle composite lubricating oil, lubricating oil additive and preparing method of the additive

A lubricating oil additive and nanoparticle technology, which is applied in the field of lubricating oil, can solve the problems of affecting the stability of lubricating oil, easily agglomerating, reducing the friction coefficient, etc., and achieves the reduction of the friction coefficient, the preparation method is simple and easy, and the energy consumption is reduced. The effect of consumption

Inactive Publication Date: 2017-03-22
北京圣盟科技有限公司
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Graphene has an ultra-thin sheet structure, excellent mechanical properties and self-lubricating properties, making it more and more researched on lubricating additives. The form significantly improves the load-bearing and anti-wear properties of lubricants; however, graphene is prone to agglomeration in base lubricants due to the large amount of oxygen-containing functional groups remaining on the surface, which affects its stability in lubricants; traditional improvement There are two methods for graphene dispersion stability. One is to add a dispersant. The dispersant is used to disperse graphene in a solvent evenly and stably, but the dispersant will affect the friction performance of graphene to a certain extent; Another method is to functionalize graphene, so that graphene can exert anti-wear properties to a great extent.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphene/Fe2O3 nanometer particle composite lubricating oil, lubricating oil additive and preparing method of the additive
  • Graphene/Fe2O3 nanometer particle composite lubricating oil, lubricating oil additive and preparing method of the additive
  • Graphene/Fe2O3 nanometer particle composite lubricating oil, lubricating oil additive and preparing method of the additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of graphene oxide: Using the Hummer method, add 2g graphite powder to a 250mL beaker, add 1gNaNO to it under the condition of ice water bath 3 After adding 50 mL of 98% H 2 SO 4 And stir well; slowly add 6gKMnO 4 , keep the temperature of the solution above 20°C and maintain this condition for 5 minutes, then remove the ice-water bath and heat to 35°C, and maintain this condition for 30 minutes; add 92mL of water, and stir for 15 minutes, the temperature will rise to about 98°C; continue to add 80mL of 60°C 3% hydrogen peroxide, centrifuge the treated liquid for 30 minutes; wash the residue with hot water until the pH of the upper suspension is about 7; disperse the obtained powder in water for 15 minutes, and filter the black residue Finally, a uniform suspension is obtained; the suspension is freeze-dried to obtain graphene oxide.

[0033] α-Fe 2 o 3 Preparation of nanorod / graphene composites: 100mgFeCl 3 ·6H 2 O was dissolved in 50ml of ethanol, an...

Embodiment 2

[0036] Graphene oxide prepared by the preparation method of Example 1.

[0037] α-Fe 2 o 3 Preparation of nanorod / graphene composites: 200mgFeCl 3 ·6H 2 O was dissolved in 50ml of ethanol, and 60mg of graphene oxide was added under continuous stirring. After ultrasonic dispersion, the mixed solution was refluxed and concentrated at 100°C for 2 hours. After the reaction was completed, it was cooled to room temperature, centrifuged to obtain a solid product, and washed with distilled water and ethanol for 2 hours. After ~3 times of removing the residue, place it in a tube furnace and anneal at 350°C for 2 hours to obtain a powdery product, which is α-Fe 2 o 3 Nanorod / graphene composites.

[0038] α-Fe loaded on graphene was observed by transmission electron microscope. 2 o 3 The length of the nanorod is 30-80nm.

Embodiment 3

[0040] Graphene oxide prepared by the preparation method of Example 1.

[0041] α-Fe 2 o 3 Preparation of nanorod / graphene composites: 500mgFeCl 3 ·6H 2 O was dissolved in 50ml of ethanol, and 60mg of graphene oxide was added under continuous stirring. After ultrasonic dispersion, the mixed solution was refluxed and concentrated at 100°C for 2 hours. After the reaction was completed, it was cooled to room temperature, centrifuged to obtain a solid product, and washed with distilled water and ethanol for 2 hours. After ~3 times of removing the residue, place it in a tube furnace and anneal at 350°C for 2 hours to obtain a powdery product, which is α-Fe 2 o 3 Nanorod / graphene composites.

[0042] α-Fe loaded on graphene was observed by transmission electron microscope. 2 o 3 The length of the nanorods is 10-60 nm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

A graphene / Fe2O3 nanometer particle composite lubricating oil additive is disclosed. The additive includes graphene the surface of which is loaded with Fe2O3 nanometer particles. The mass percentage of the graphene the surface of which is loaded with the Fe2O3 nanometer particles in lubricating oil is 0.002-1%. A method of preparing the additive is also disclosed. The additive is prepared by subjecting graphene oxide and a FeCl3 hydrate to a hydrolysis reaction, then centrifuging to obtain a solid product, washing the solid product with distilled water and ethanol for a plurality of times, and annealing. The additive has advantages of extremely good dispersibility and stability, good friction resistance and abrasion resistance and a high extreme pressure property, can be directly added into lubricating oil, and is capable of reducing the friction coefficient of a mechanical friction surface, restoring a worn surface, prolonging the service lifetime of machinery and reducing energy consumption. The method is simple, feasible, high in repetition rate and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to a graphene / Fe 2 o 3 Nano particle composite lubricating oil, lubricating oil additive and preparation method thereof. Background technique [0002] As an important part of the mechanical movement, lubricating oil plays the role of reducing friction, reducing wear, cooling, preventing corrosion, insulating, cleaning, and sealing; the performance of lubricating oil affects the service life of the machine, and Lubricating oil additives are the key substances to improve the performance of lubricating oils, and can make up for the shortage of base oils; from the perspective of market development trends, the growth trend of my country's lubricating oil additives market demand is consistent with the growth trend of domestic lubricating oil market demand, and the growth of the former The speed is obviously higher than the latter, mainly because the proportion of domestic high-gra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/00C10M125/02C10M125/10C10M141/02C10N30/06
CPCC10M125/00C10M125/02C10M125/10C10M141/02C10M2201/041C10M2201/062C10M2207/124C10N2030/06
Inventor 王为军
Owner 北京圣盟科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap