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Preparation method of lubricating material with nano-copper particles loaded on molybdenum disulfide nanosheets

A molybdenum disulfide and particle lubrication technology, applied in the directions of nanotechnology, nanotechnology, lubricating composition, etc., can solve the problems such as the preparation method of molybdenum disulfide nanosheet-loaded nano-copper particle lubricating material, which has not been reported, and achieves improved friction. The effect of wear performance

Inactive Publication Date: 2018-01-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although there are a small number of Chinese invention patents for the preparation of molybdenum disulfide-based nanocomposites, there is no relevant report on the preparation method of molybdenum disulfide nanosheets loaded with nano-copper particles.

Method used

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  • Preparation method of lubricating material with nano-copper particles loaded on molybdenum disulfide nanosheets
  • Preparation method of lubricating material with nano-copper particles loaded on molybdenum disulfide nanosheets
  • Preparation method of lubricating material with nano-copper particles loaded on molybdenum disulfide nanosheets

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Embodiment 1

[0022] Step 1: Add 0.12g of sodium molybdate and 0.24g of thioacetamide into 80ml of deionized water and sonicate for 0.5h to prepare a uniform transparent liquid, then transfer the solution to a 100ml Teflon liner The reaction kettle was placed in a stainless steel reaction kettle, and then the reaction kettle was put into a blast oven, the reaction temperature was set to 240° C., and the reaction time was 24 hours. After cooling naturally to room temperature, the product in the reaction kettle was centrifuged and washed with absolute ethanol, and then the black product was dried in a vacuum oven to obtain molybdenum disulfide nanosheets.

[0023] Step 2: Disperse 0.04 g of molybdenum disulfide into 100 ml of Tris-HCL (pH=8.5) buffer solution and sonicate for 2 h to prepare a black liquid, then add 0.2 g of dopamine hydrochloride to the above solution and stir vigorously for 12 h, Centrifuge and wash the product several times with distilled water and ethanol, then disperse th...

Embodiment 2

[0029] Step 1: Add 0.12g of sodium molybdate and 0.24g of thioacetamide into 80ml of deionized water and sonicate for 0.5h to prepare a uniform transparent liquid, then transfer the solution to a 100ml Teflon liner The reaction kettle was placed in a stainless steel reaction kettle, and then the reaction kettle was put into a blast oven, the reaction temperature was set to 240° C., and the reaction time was 24 hours. After cooling naturally to room temperature, the product in the reaction kettle was centrifuged and washed with absolute ethanol, and then the black product was dried in a vacuum oven to obtain molybdenum disulfide nanosheets.

[0030] Step 2: Disperse 0.04 g of molybdenum disulfide into 100 ml of Tris-HCL (pH=8.5) buffer solution and sonicate for 2 h to prepare a black liquid, then add 0.2 g of dopamine hydrochloride to the above solution and stir vigorously for 12 h, Centrifuge and wash the product several times with distilled water and ethanol, then disperse th...

Embodiment 3

[0032] Step 1: Add 0.12 g of sodium molybdate and 0.24 g of thioacetamide into 80 ml of deionized water and sonicate for 0.5 h to prepare a homogeneous transparent liquid, then transfer the solution to a 100 ml Teflon liner The reaction kettle was placed in a stainless steel reaction kettle, and then the reaction kettle was put into a blast oven, the reaction temperature was set to 240° C., and the reaction time was 24 hours. After cooling naturally to room temperature, the product in the reaction kettle was centrifuged and washed with absolute ethanol, and then the black product was dried in a vacuum oven to obtain molybdenum disulfide nanosheets.

[0033] Step 2: Disperse 0.1 g of molybdenum disulfide into 100 ml of Tris-HCL (pH=8.5) buffer solution and sonicate for 2 h to prepare a black liquid, then add 0.2 g of dopamine hydrochloride to the above solution and stir vigorously for 12 h, Wash the product by centrifugation repeatedly with distilled water and ethanol, then dis...

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Abstract

The invention relates to a preparation method of a lubricating material with nano-copper particles loaded on molybdenum disulfide nanosheets. The preparation method comprises the following steps: dispersing molybdenum disulfide nanosheets into a Tris-HCl buffer solution, adding dopamine hydrochloride after uniform dispersion, and grafting polydopamine onto the surfaces of molybdenum disulfide nanosheets; then dispersing functional molybdenum disulfide nanosheets into ethanol, and adding soluble copper, adding a reducing agent after the soluble copper is completely dissolved and reacting, so that the copper salt is transformed into nano-copper to be in situ loaded on the surfaces of the molybdenum disulfide nanosheets. The preparation method provided by the invention has the advantages thatpolydopamine carries out biomimetic modification on the molybdenum disulfide nanosheets, the preparation technology is simple, polydopamine can organically combine the molybdenum disulfide nanosheetswith nano copper together, and abundant active groups are provided on the surfaces of the molybdenum disulfide nanosheets; after in situ reduction, the nano copper is uniformly adhered on the surfaces of the molybdenum disulfide nanosheets, so that the composite not only can be uniformly and stably dispersed into polar base oil but also has excellent antiwear and antifriction effects.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanocomposite materials, and relates to a preparation method of a molybdenum disulfide nanosheet loaded nano copper particle lubricating material. Background technique [0002] As a typical transition metal compound, molybdenum disulfide has a large specific surface area and strong adsorption capacity, and is widely used in the fields of adsorption, catalysis, and electrochemistry. At the same time, MoS 2 The preparation method is simple, the cost is low, and it has a special layered structure. It can slip and form a transfer film under low stress load, so it has great research significance in the field of lubrication. In recent years, molybdenum disulfide is used as a carrier to prepare The development of new nanocomposites with better lubricating properties has become an important research direction. [0003] The Chinese invention patent with application number 201410212428.2 discloses a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/00C10M161/00C10M169/04B82Y30/00B82Y40/00C10N30/06
Inventor 宋浩杰贾晓华
Owner SHAANXI UNIV OF SCI & TECH
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