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A kind of preparation method of carbon sphere/two-dimensional covalent organic polymer nanoparticle

A covalent organic and nano-particle technology, applied in the direction of nanotechnology, nanotechnology, lubricating composition, etc., can solve the problems of easy agglomeration, strong action force, poor dispersion of base oil, etc.

Active Publication Date: 2022-04-29
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

The Chinese patent with the publication number CN111410185A discloses a method for preparing carbon microspheres by hydrothermal carbonization in a high-concentration salt solution, but unmodified carbon spheres have strong intermolecular forces and are easy to agglomerate, resulting in their poor dispersion

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  • A kind of preparation method of carbon sphere/two-dimensional covalent organic polymer nanoparticle
  • A kind of preparation method of carbon sphere/two-dimensional covalent organic polymer nanoparticle
  • A kind of preparation method of carbon sphere/two-dimensional covalent organic polymer nanoparticle

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preparation example Construction

[0030] A method for preparing carbon spheres / two-dimensional covalent organic polymer nanoparticles, comprising the following steps:

[0031] 1) Adding oxalic acid to the glucose solution for high-pressure hydrothermal reaction, collecting the product after the reaction, centrifuging, washing, and drying to obtain carbon spheres;

[0032] 2) Disperse the carbon spheres prepared in step (1) in the mixed solution of deionized water and absolute ethanol, add the mixed solution of silane coupling agent and absolute ethanol, and react under the condition of condensing and reflux heating. Collect the product, then centrifuge and dry to obtain functionalized carbon spheres;

[0033] 3) Add the functionalized carbon spheres prepared in step (2) into N,N-dimethylformamide to form a mixed solution A, and disperse evenly by ultrasonic; add melamine, cyanuric chloride, and triethylamine to N,N-dimethylformamide Prepare mixed solution B in N-dimethylformamide, and ultrasonically disperse;...

Embodiment 1

[0045] 1) Prepare a glucose solution with a concentration of 2.5mol / L with deionized water, then add oxalic acid with a concentration of 1mg / mL to adjust the solution to be acidic, and conduct a hydrothermal reaction at 180°C for 10 hours. After the reaction, collect the product, centrifuge, and wash. Carbon spheres were obtained after drying in an oven at 60°C for 12 hours;

[0046] 2) Disperse 200mg of carbon spheres in a mixed solution of 75mL deionized water and 25mL of absolute ethanol, then add a mixed solution of γ-chloropropyltriethoxysilane and absolute ethanol, and add 5ml of γ-chloropropyltriethoxysilane was condensed and refluxed at 60°C for 6 hours, and the product was centrifuged, washed and dried to obtain functionalized carbon spheres;

[0047] 3) Prepare a mixed solution of functionalized carbon spheres and DMF, ultrasonically disperse for 30 minutes, and record it as mixed solution A, wherein the amount of functionalized carbon spheres added per 100 mL of DMF...

Embodiment 2

[0051] 1) Prepare a glucose solution with a concentration of 2.5mol / L, then add oxalic acid with a concentration of 1mg / mL to adjust the solution to acidity, and conduct a hydrothermal reaction at 180°C for 10 hours. After the reaction, collect the product, centrifuge, wash, and place in an oven at 60°C Carbon spheres were obtained after drying in medium for 12 hours;

[0052] 2) Disperse 200mg of carbon spheres in a mixed solution of 75mL deionized water and 25mL of absolute ethanol, then add a mixed solution of γ-chloropropyltriethoxysilane and absolute ethanol, and add Condensate and reflux 5mL of γ-chloropropyltriethoxysilane at 70°C for 12 hours, centrifuge, wash and dry the product to obtain functionalized carbon spheres;

[0053] 3) Prepare a mixed solution of functionalized carbon spheres and DMF, ultrasonically disperse for 1 h, and record it as mixed solution A, wherein the amount of functionalized carbon spheres added to each 100 mL of DMF solution is 5 mg / mL;

[0...

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Abstract

The invention discloses a preparation method of carbon spheres / two-dimensional covalent organic polymer nanoparticles. Glucose is used as a carbon source, and carbon spheres are obtained by high-pressure hydrothermal reaction; the carbon spheres are dispersed in deionized water and absolute ethanol Add the mixed solution of silane coupling agent and anhydrous ethanol to the mixed solution of silane coupling agent, react under the condition of condensation reflux heating to obtain functionalized carbon spheres; disperse the functionalized carbon spheres into N,N-dimethylformamide , denoted as mixed solution A; prepare N,N-dimethylformamide solution of melamine, cyanuric chloride and triethylamine, denoted as mixed solution B; add mixed solution B into mixed solution A, ultrasonically disperse, A mixed solution C is obtained; the mixed solution C is transferred to a hydrothermal kettle and heated for reaction; after the reaction is completed, the product is collected, centrifuged, washed and dried to obtain carbon spheres / two-dimensional covalent organic polymer nanoparticles.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a method for preparing carbon spheres / two-dimensional covalent organic polymer nanoparticles. Background technique [0002] In recent years, with the development of carbon nanomaterials preparation and application technology, the development and application of carbon-containing nano-lubricating additives such as graphene, carbon nanotubes and carbon spheres has become one of the research hotspots at home and abroad. Among many carbon nanomaterials, due to its special spherical structure, carbon spheres can act as micro-bearings, creating physical separation between contact interfaces, converting sliding friction into rolling friction to a certain extent, and achieving good lubrication and anti-wear effects . The Chinese patent with the publication number CN111410185A discloses a method for preparing carbon microspheres by hydrothermal carbonization in a high-concentration salt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/02C10M161/00B82Y30/00B82Y40/00C10N30/06C10N20/06
CPCC10M125/02C10M161/00B82Y30/00B82Y40/00C10N2030/06C10N2020/061C10M2201/14C10M2201/041C10M2217/04
Inventor 费杰赵蓓李翠艳欧阳海波周曼刘甜
Owner SHAANXI UNIV OF SCI & TECH
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