Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of graphene sulfide

A technology of sulfided graphene and graphene, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of harsh equipment requirements, unfavorable large-scale production, long reaction time, etc., and achieve excellent anti-wear reduction. The effect of friction

Active Publication Date: 2019-03-19
中国人民解放军空军勤务学院
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, MUllen et al. reported a method for preparing graphene sulfide and graphene nitride on a porous plate, specifically using hydrogen sulfide gas as a reducing agent and a sulfur source to reduce graphene oxide at high temperature, but this method requires the use of hydrogen sulfide gas It is toxic and corrosive, takes a long time to react, and requires harsh equipment, so it is not conducive to large-scale production

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
  • Preparation method of graphene sulfide
  • Preparation method of graphene sulfide
  • Preparation method of graphene sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Oxidation of graphene

[0026] (1) Take 1 g of 50-mesh graphene powder in a flask, add 46 ml of concentrated sulfuric acid (98%H 2 SO 4 ) and 0.5 g sodium nitrate (NaNO 3 ), at 35 o Stir for 2min under heating condition in C water bath;

[0027] (2) Stir the mixture in an ice bath for 15 min to lower the temperature to 0 o C;

[0028] (3) Add 3 g potassium permanganate (KMnO 4 ), the temperature is controlled at 20 o React in C for 5 minutes, after the reaction is stable, at 35 o C water bath heating condition was stirred for 24 h, and the graphene oxide product was obtained after centrifugation and filtration.

[0029] 2. Vulcanization of graphene oxide

[0030] (1) Take 100 mg of graphene oxide and graphene in 100 ml DMF, and ultrasonically treat it for 1 h to make it uniformly dispersed;

[0031] (2) Centrifuge at 1000 rpm for 10 min to remove precipitated impurities;

[0032] (3) Put it in the flask again, add 300 mg of P with a mass fraction of 99% 4...

Embodiment 2

[0037] 1. Oxidation of graphene

[0038] (1) Take 1 g of 50-mesh graphene powder in a flask, add 46 ml of concentrated sulfuric acid (98%H 2 SO 4 ) and 0.5 g sodium nitrate (NaNO 3 ), at 35 o Stir for 2min under heating condition in C water bath;

[0039] (2) Stir the mixture in an ice bath for 15 min to lower the temperature to 0 o C;

[0040] (3) Add 3 g potassium permanganate (KMnO 4 ), the temperature is controlled at 20 o React in C for 5 minutes, after the reaction is stable, at 35 o C water bath heating condition was stirred for 24 h, and the graphene oxide product was obtained after centrifugation and filtration.

[0041] 2. Vulcanization of graphene oxide

[0042] (1) Take 100 mg of graphene oxide and graphene in 100 ml DMF, and ultrasonically treat it for 1 h to make it uniformly dispersed;

[0043] (2) Centrifuge at 1000 rpm for 10 min to remove precipitated impurities;

[0044] (3) Put it in the flask again, add 300 mg of P with a mass fraction of 99% 4...

Embodiment 3

[0048] 1. Oxidation of graphene

[0049] (1) Take 1 g of 325-mesh graphene powder in a flask, add 46 ml of concentrated sulfuric acid (98%H 2 SO4 ) and 0.5 g sodium nitrate (NaNO 3 ), at 35 o Stir for 2min under heating condition in C water bath;

[0050] (2) Stir the mixture in an ice bath for 15 min to lower the temperature to 0 o C;

[0051] (3) Add 3 g potassium permanganate (KMnO 4 ), the temperature is controlled at 20 o React in C for 5 minutes, after the reaction is stable, at 35 o C water bath heating condition was stirred for 24 h, and the graphene oxide product was obtained after centrifugation and filtration.

[0052] 2. Vulcanization of graphene oxide

[0053] (1) Take 100 mg of graphene oxide and graphene in 100 ml DMF, and ultrasonically treat it for 1 h to make it uniformly dispersed;

[0054] (2) Centrifuge at 1000 rpm for 10 min to remove precipitated impurities;

[0055] (3) Put it in the flask again, add 300 mg of P with a mass fraction of 99% 4 ...

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

No PUM Login to View More

Abstract

The invention relates to graphene sulfide as well as a preparation method and application thereof. The preparation method comprises the following steps: oxidizing graphene by using potassium permanganate and concentrated sulfuric acid, and then vulcanizing the oxidized graphene by using P4S10, thereby preparing the graphene sulfide. In addition, the dispersion performance and absorption performance of the graphene sulfide in lubricating oil basic oil are also researched, the tribological performance of a graphene reaction lubricating membrane is tested, and the lubricating mechanism is researched. The result shows that the dispersion performance of the graphene can be improved by virtue of vulcanization, and the wear-resisting and friction reducing effect of the graphene can be improved.

Description

technical field [0001] The invention relates to a preparation method of sulfide graphene, belonging to the field of sulfide graphene preparation. Background technique [0002] Graphene is a two-dimensional crystalline material in which carbon atoms form a hexagonal network structure with sp2 hybrid orbitals. Basic research on tribological properties has confirmed that graphene has excellent lubricating properties. Utilizing the interaction between the active sulfur in graphene sulfide and the surface of the iron-based friction pair, the graphene sulfide generates a strong interfacial force through chemical adsorption or reaction with the surface of the iron-based friction pair, so that the graphene is anchored on the surface of the friction pair , In theory, good anti-wear and anti-friction effects can be obtained. At present, there are many reports on graphene sulfide, but few studies on its tribological properties. The reported preparation methods include the use of dibe...

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
IPC IPC(8): C10M125/02C10N60/04C10N60/10C10N60/12C01B32/194
CPCC10M125/02C10N2060/04C10N2060/10C10N2060/12C01B32/194
Inventor 马军姜旭峰胡建强胡役琴费逸伟董仕宝陈利安翟新业
Owner 中国人民解放军空军勤务学院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com