Preparation method of water-based high-dispersity nano molybdenum disulfide

A nano-molybdenum disulfide, high-dispersion technology, applied in the treatment of dyed high-molecular organic compounds, dyed low-molecular organic compounds, petroleum industry, etc., can solve the problems of poor biodegradability and non-renewability, and achieve high dispersion , convenient promotion and use, and easy-to-obtain raw materials

Active Publication Date: 2019-05-17
HUIZHOU RES INST OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because oil-based lubricants have been used for many years, but they have some disadvantages such as poor biodegradability and non-renewability

Method used

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  • Preparation method of water-based high-dispersity nano molybdenum disulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Add ammonium molybdate, thiourea, and thioglycolic acid in a molar ratio of 1:5:6 to the solution mixed with N,N-dimethylacetamide and deionized water at a volume ratio of 1:5, and stir to dissolve , after the dissolution is complete, transfer to the reactor and seal;

[0019] (2) Put the reaction kettle in an electric oven, set the temperature of the oven at 180°C for 24 hours, take it out, wash and dry the precipitate in the inner lining;

[0020] (3) Add 50ml of toluene, 1~2g of molybdenum disulfide modified with mercaptoacetic acid, 0.1~0.5mmol of organic tin, and 2~7mmol of diisocyanate into the container in turn under nitrogen protection, mix well and add polyethylene glycol 1~ 5mmol was reacted under heating conditions at 60°C;

[0021] (4) Wash and dry with deionized water or absolute ethanol after the reaction to obtain PEG-MoS 2 .

Embodiment 2

[0023] (1) Add sodium molybdate, ammonium persulfate and mercaptoethanol at a molar ratio of 1:4:5 to the solution mixed with N,N-dimethylacetamide and deionized water at a volume ratio of 1:3, and stir Dissolve, transfer to the reaction kettle and seal after the dissolution is complete;

[0024] (2) Put the reaction kettle in an electric oven, and set the temperature of the oven at 200°C to react for 24 hours, take out the precipitate in the inner lining, wash and dry it;

[0025] (3) Under nitrogen protection, add 50ml of toluene, 1~2g of molybdenum disulfide modified by mercaptoethanol, 0.1~0.5mmol of organic tin, and 2~7mmol of diisocyanate in the container, mix well and add polyethylene glycol 1~ 5mmol was reacted under heating conditions at 80°C;

[0026] (4) Wash and dry with deionized water or absolute ethanol after the reaction to obtain PEG-MoS 2 .

Embodiment 3

[0028] (1) Add sodium molybdate, thioacetamide, and mercaptopropylene glycol at a molar ratio of 1:5:6 to a solution mixed with N,N-dimethylacetamide and deionized water at a volume ratio of 1:1, so that It is completely mixed, stirred and dissolved, and transferred to the reaction kettle to seal after the dissolution is complete;

[0029] (2) Put the reaction kettle in an electric oven, and set the temperature of the oven at 200°C to react for 24 hours, take out the precipitate in the inner lining, wash and dry it;

[0030] (3) Under the protection of nitrogen, add 50ml of toluene, 1~2g of molybdenum disulfide modified by mercaptopropylene glycol, 0.1~0.5mmol of organic tin, and 2~7mmol of diisocyanate in the container, mix well and add polyethylene glycol 1~ 5mmol was reacted under heating conditions at 90°C;

[0031] (4) Wash and dry with deionized water or absolute ethanol after the reaction to obtain PEG-MoS 2 Material.

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Abstract

The invention discloses a preparation method of water-based high-dispersity nano molybdenum disulfide. The preparation method comprises the following steps: (1) mixing a molybdenum source and a sulfursource, and a sulfur-containing compound, and adding a mixture into a solution formed by mixing and dissolving an organic solvent and de-ionized water; after completely dissolving, transferring intoa reaction kettle and sealing; (2) putting the reaction kettle into an electric heating drying oven and reacting; after reaction is finished, taking out sediment in a lining and washing and drying toobtain a sample; (3) adding toluene, mercaptoethanol modified nano molybdenum disulfide, organic tin and diisocyanate into a container in sequence under the protection of nitrogen gas; after uniformlymixing, dropwise adding polyethylene glycol and reacting under a heating condition; and (4) after reaction is finished, washing and drying to obtain the water-based high-dispersity nano molybdenum disulfide. According to the preparation method disclosed by the invention, the surface of the nano molybdenum disulfide is subjected to organic modification and a synthesized material has better hydrophilicity and has better dispersity in a water base. The preparation method disclosed by the invention has the advantages of simplicities, simplicity and easiness for obtaining raw materials and convenience for popularization and application.

Description

technical field [0001] The invention relates to the field of water-based additives, in particular to the dispersibility and lubricating application of a preparation method of highly dispersible nanometer molybdenum disulfide in water-based. Background technique [0002] Because oil-based lubricants have been used for many years, they have some disadvantages such as poor biodegradability and non-renewability. In recent years, water-based lubricants have been widely used in cutting fluids for metalworking and other fields, and are considered to be an attractive alternative to oil-based lubricants. It is understood that water-based lubrication has the advantages of cooling capacity, reduced cleaning costs, reduced toxicity and fire resistance. However, the potential utilization of water-based lubrication is usually limited by the poor lubricating properties of water. One possibility to improve the tribological properties of water-based fluids is to use functional additives wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/08C09C3/10C10M125/22C10N30/04
Inventor 纪红兵晏金灿黄威
Owner HUIZHOU RES INST OF SUN YAT SEN UNIV
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