Nano solid lubricant with hollow cage-shape structure and preparation method thereof

A solid lubricant and cage-like technology, which is applied in the field of hollow cage-like nano solid lubricants and their preparation, can solve the problems of difficult realization and complex production process of IF-MX2, and achieves easy mass production, simple process route and low cost. The effect of the coefficient of friction

Inactive Publication Date: 2007-03-14
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these existing inventions all involve complex production processes, and a large amount of high-purity IF-MX must be prepared at a lower cost. 2 still difficult to achieve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Spherical MoO 3 or WO 3 Preparation of nanoparticles

[0015] Preparation of Spherical MoO by "Ultrasonic-Chemical Precipitation" Method 3 or WO 3 , properly select the synergistic mode of ultrasonic oscillation and mechanical stirring, the content of ethanol or methanol in the ethanol or methanol-water reaction system, HCl or HNO 3 The amount of solution, the washing method of reactant precipitation, and the calcination temperature and time can prepare spherical MoO with better monodisperse characteristics. 3 or Wo 3 nanoparticles.

[0016] (1) Spherical MoO 3 Preparation of nanoparticles

[0017] Prepare 3 mol / l HCl solution and 0.5 mol / l Na with deionized water at room temperature 2 MoO 4 solution. Take 500ml of absolute ethanol and 1500ml of Na 2 MoO 4 The solution was mixed well, and 400ml of HCl solution, pH ≈ 1.0, was slowly dropped into the reaction system through the dropping funnel under the synergy of ultrasonic and mechanical stirring,...

Embodiment 2

[0020] Example 2: MoO 3 or WO 3 S or Se coating on the surface of nanoparticles

[0021] (1)MoO 3 or WO 3 S coating on the surface of nanoparticles

[0022] Take 500ml of CS respectively 2 and 500ml of CCl 4 Make a mixed solvent, add 320g of S powder into the mixed solvent, stir continuously to make it completely dissolved; then add 470g of MoO to it 3 Nanoparticles or 750g of WO 3 After fully stirring the nanoparticles for 20 minutes, place them in an ultrasonic cleaner for ultrasonic dispersion for 30 minutes, and finally undergo vacuum distillation to remove the solvent to obtain about 790 g of S-coated MoO 3 Composite powder, or about 1070g S-coated WO 3 Composite powder.

[0023] (2)MoO 3 or WO 3 Se coating on the surface of nanoparticles

[0024] Take 500ml of CS respectively 2 and 500ml of CCl 4 Make a mixed solvent, add 240g of Se powder into the mixed solvent, stir constantly to make it completely dissolved; then add 140g of MoO to it 3 Nanoparticles or...

Embodiment 3

[0025] Example 3: Preparation of IF-type MoS by sulfuration reaction 2 or WS 2 Nanoparticle powder

[0026] A certain amount of MoO coated with S on the surface 3 or WO 3 The composite powder is placed in the vulcanization reaction chamber, and then the reaction chamber is evacuated to below 1Pa, then slowly filled with dry hydrogen to 0.06Mpa, and then the reaction chamber is heated to 600°C with a heating rate of 10°C·min -1 , constant temperature for 30min. Then cool down to room temperature with the furnace to obtain IF-type MoS 2 or WS 2 Nanoparticle powder.

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Abstract

The present invention discloses one kind of hollow cage-shaped nanometer solid lubricant and its preparation process. Spherical nanometer MoO3 or WO3 particle is first prepared through an ultrasonic and chemical precipitation process and surface coated with S or Se, and hollow cage-shaped nanometer solid lubricant of IF-MoS2, IF-MoSe2, IF-WS2 or IF-WSe2 of particle size 40-100 nm is then prepared through further vulcanization or selenation reaction. This kind of solid lubricant may be used alone or as additive added into lubricant oil or grease to form composite lubricant oil or grease to reduce friction coefficient, reduce wear and raise extreme pressure resistance. At the same time, the solid lubricant can meet the lubricant requirement in high temperature, low temperature, high vacuum, high humidity, high corrosion, high radiation, high load and other harsh conditions.

Description

Technical field: [0001] The invention relates to the research field of inorganic fullerene (IF) nanomaterials and lubrication technology, to be precise, it is a spherical MoO prepared by the "ultrasonic-chemical precipitation" method 3 or WO 3 Nanoparticles are precursors, and the inorganic fullerene-like molybdenum disulfide (IF-MoS) obtained by chemical reaction 2 ), molybdenum diselenide (IF-MoSe 2 ) or inorganic fullerene tungsten disulfide (IF-WS 2 ), tungsten diselenide (IF-WSe 2 ) and the like have a hollow cage structure nano solid lubricant and a preparation method thereof. Background technique: [0002] 50% to 70% of the energy used in the world today is consumed in useless friction, and the wear and tear caused by friction is also one of the most important reasons for the failure of mechanical equipment. It has become an important measure to save energy and raw materials by developing new lubricating materials with excellent performance to control friction, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M103/00C10N10/00C10N50/08
Inventor 杨海滨刘世凯
Owner JILIN UNIV
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