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Method for preparing tungsten diselenide nano sheets

A technology of tungsten diselenide and nanosheets, which is applied in the field of preparation of tungsten diselenide nanosheets, to achieve the effects of safety and environmental protection, good dispersion performance and high yield in the production process

Inactive Publication Date: 2011-06-15
无锡润鹏复合新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are few studies on it as a lubricating oil additive in the field of tribology. The research mainly focuses on the effect of friction reduction and wear resistance and the analysis of the wear surface. Fewer studies of real-time correspondence

Method used

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  • Method for preparing tungsten diselenide nano sheets
  • Method for preparing tungsten diselenide nano sheets
  • Method for preparing tungsten diselenide nano sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare tungsten diselenide nanosheets as follows:

[0018] (1) Prepare the raw material mixture: take tungsten powder and selenium powder according to the molar ratio of 1:2, and the selenium powder is excessively 5%. After mixing, grind in a mortar for 5 minutes, and then mix with a stainless steel ball with a diameter of 8mm according to the mass ratio Mix 1:10 into the ball mill jar, seal and extract the air in the jar, repeatedly pass in and extract argon gas for 5 times, put the ball mill jar into the ball mill, and mill the powder in the ball mill jar at a speed of 200 rpm for 30 minutes , Then take out the powder and put it into a quartz glass tube with a diameter of 15mm sealed at one end to obtain a raw material mixture;

[0019] (2) Heating synthesis: heat the above-mentioned quartz tube with an acetylene flame until its open end is in a molten state, then seal it and leave a small hole, connect the small hole with a vacuum pump to vacuum the quartz tube and then ...

Embodiment 2

[0021] Prepare tungsten diselenide nanosheets as follows:

[0022] (1) Prepare the raw material mixture: take tungsten powder and selenium powder according to the molar ratio of 1:2, and the selenium powder is excessively 5%, mix well, grind in a mortar for 5 minutes, and then mix with a stainless steel ball with a diameter of 8mm according to mass ratio Mix 1:10 into the ball mill jar, seal and extract the air in the jar, repeatedly pass in and extract argon gas for 5 times, put the ball mill jar into the ball mill, and mill the powder in the ball mill jar at a speed of 200 rpm for 30 minutes , Then take out the powder and put it into a quartz glass tube with a diameter of 15mm sealed at one end to obtain a raw material mixture;

[0023] (2) Heating synthesis: heat the above-mentioned quartz tube with an acetylene flame until its open end is in a molten state, then seal it and leave a small hole, connect the small hole with a vacuum pump to vacuum the quartz tube and then seal it ...

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Abstract

The invention discloses a method for preparing tungsten diselenide nano sheets, comprising the following steps of: evenly mixing tungsten powder and selenium powder in a certain mol ratio; heating and reacting the mixture under protection of argon, and cooling to obtain the tungsten diselenide nano sheets. The tungsten diselenide nano sheet is of an inorganic nano sheet laminated structure; the tungsten diselenide nano sheet has excellent dispersion performance and friction performance in base oil and polymer compounds; the tungsten diselenide nano sheet is simple in preparing method, safe, environment friendly, high in production rate, low in cost and suitable for large-scale industrial production.

Description

Technical field [0001] The invention relates to a method for preparing inorganic nano materials, more specifically, to a method for preparing tungsten diselenide nanosheets. Background technique [0002] Transition metal selenide MSe 2 (M=Mo, W, Nb, Ta, Ti, Zr) has become one of the research hotspots of nanotribology. It has been found that many nanosheets as lubricant additives have good anti-wear and anti-friction effects, and can even repair worn surfaces. The use of nanomaterials as lubricant additives has been extensively studied in the field of tribology, including the synthesis of nanomaterials and tribological properties. Among them, the solid-phase reaction method directly causes the reaction between the elements, and the process flow is simple, easy and reactive. There are few by-products, which is a better synthesis method. In the field of tribology, people have found that when nanomaterials are added to base oils, they can improve their extreme pressure performance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04B82Y40/00
Inventor 李长生晋跃唐华范有志郭自成
Owner 无锡润鹏复合新材料有限公司
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