SiO2/MoS2 core-shell-structure microspheres and preparation method thereof

A core-shell structure and microsphere technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of easy agglomeration, difficult dispersion, anti-wear and anti-friction properties of nano-silica and so on.

Active Publication Date: 2015-06-10
峰特(浙江)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But nano-MoS 2 , nano-silica has problems such as easy agglomeration and difficulty in dispersing, which has been troubled by

Method used

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  • SiO2/MoS2 core-shell-structure microspheres and preparation method thereof
  • SiO2/MoS2 core-shell-structure microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 20 mL of absolute ethanol to the beaker, then add 1 mL of TEOS, 1 mL of triethanolamine, and 1 mL of distilled water in sequence, and stir at 20 °C for 6 h to prepare SiO 2 Microspheres. centrifuged, the resulting SiO 2 Re-disperse in 40ml water, add 0.35g ammonium molybdate, 0.4g polyvinylpyrrolidone (K30) and 0.1g copper reagent in turn, after stirring evenly, pour the mixed reactant into the autoclave; in the oven at 200℃ After reacting for 24 hours, take it out, centrifuge, wash with water, wash with alcohol, and dry.

Embodiment 2

[0015] Add 30 mL of absolute ethanol to the beaker, then add 2 mL of TEOS, 1 mL of triethanolamine, and 2 mL of distilled water in sequence, and stir at 10 °C for 6 h to prepare SiO 2 Microspheres. centrifuged, the resulting SiO 2 Redisperse in 40ml of water, add 0.1g ammonium molybdate, 0.2g polyvinylpyrrolidone (K30) and 0.05g copper reagent in turn, after stirring evenly, pour the mixed reactant into the autoclave; in the oven at 220℃ After reacting for 24 hours, take it out, centrifuge, wash with water, wash with alcohol, and dry.

Embodiment 3

[0017] Add 20mL of absolute ethanol to the beaker first, then add 1mL TEOS, 2mL diethanolamine, 1mL distilled water in turn, and stir at 20°C for 12h to prepare SiO 2 Microspheres. centrifuged, the resulting SiO 2 Redisperse in 40ml of water, add 0.2g ammonium molybdate, 0.4g polyvinylpyrrolidone K30 and 0.1g copper reagent in turn, after stirring evenly, pour the mixed reactants into the autoclave; react in an oven at 220°C for 24h , taken out, centrifuged, washed with water, washed with alcohol, and dried.

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Abstract

The invention discloses SiO2/MoS2 core-shell-structure microspheres and a preparation method thereof. The method comprises the following steps: dissolving tetraethoxyl silicion and triethanolamine (or diethanolamine or ethylenediamine or 2-amino-2-methyl-1-propanol) in anhydrous ethanol, dropwisely adding distilled water, and carrying out hydrolysis reaction under certain conditions to prepare SiO2 microspheres; and dispersing the obtained SiO2 microspheres in a water solution containing ammonium molybdate, polyvinylpyrrolidone (K30) and sodium diethyldithiocarbamate, and carrying out hydrothermal reaction in a high-pressure autoclave to obtain the SiO2/MoS2 core-shell microspheres. The SiO2 microspheres prepared by the method have uniform size; and the composite SiO2/MoS2 core-shell microspheres have the advantages of uniform shape and size and favorable dispersity, and can be used for a lubricating oil additive to improve the lubricating conditions.

Description

technical field [0001] The present invention relates to a SiO 2 / MoS 2 Core-shell structure microspheres and preparation method thereof, specifically, relate to a kind of SiO with good dispersibility and anti-friction and anti-wear properties 2 / MoS 2 The invention discloses a preparation method of a core-shell structure microsphere solid lubricating additive. Background technique [0002] Since the S atom in the molybdenum disulfide molecule has a strong affinity for the metal surface, a firm lubricating film can be formed on the metal surface, thereby significantly reducing friction and wear. Therefore, molybdenum disulfide is regarded as a solid lubricant with excellent performance. The material has good chemical stability and thermal stability. It has excellent lubricity under conditions of high temperature, low temperature, high load, high speed and chemical corrosion, so it is widely used in automobile, machinery and rubber industries. Existing literature discloses...

Claims

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Application Information

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IPC IPC(8): C10M125/26C10N30/06C10N30/04
Inventor 王德宝宋彩霞袁金钟朱义彪
Owner 峰特(浙江)新材料有限公司
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