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Graphene material with fiber shape as well as preparation method and application thereof

A technology of graphene and fiber, which is applied in the field of graphene materials and its preparation, can solve problems such as limiting the application fields of graphene materials, and achieve the effect of expanding the application range and expanding the application range

Active Publication Date: 2020-06-12
GUANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, graphene materials are generally in the form of powder, which limits some application fields of graphene materials, such as textiles, coatings and plastics, etc.

Method used

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  • Graphene material with fiber shape as well as preparation method and application thereof
  • Graphene material with fiber shape as well as preparation method and application thereof
  • Graphene material with fiber shape as well as preparation method and application thereof

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preparation example Construction

[0031] The present invention also provides the preparation method of the graphene material with fiber shape described in above-mentioned technical scheme, comprises the following steps:

[0032] (1) subjecting the cellulose raw material to acid treatment, separating the cellulose and hemicellulose, collecting the solids, and obtaining the primary crude extract of cellulose;

[0033] (2) Alkali treatment is carried out on the primary cellulose extract obtained in the step (1), so that the cellulose and lignin in the cellulose crude extract are separated, the solid is collected, and the secondary cellulose crude extract is obtained;

[0034] (3) heat-treat the secondary crude extract of cellulose obtained in the step (2) with formic acid, further remove hemicellulose and lignin, collect solids, and obtain pure cellulose; The diameter is 10 μm ~ 20 μm;

[0035] (4) subjecting the pure cellulose product obtained in the step (3) to a temperature-programmed treatment in an inert ga...

Embodiment 1

[0053] Take bagasse as raw material to prepare graphene material with fiber shape, get 50 grams of bagasse and put it in a 250mL Erlenmeyer flask, add 4% dilute sulfuric acid solution with a mass ratio of 1:5, put it into an autoclave, and put it in an autoclave at 110 Keep it at ℃ for 120 minutes, use a centrifuge to shake out the acid solution and the hemicellulose dissolved in it, wash it with deionized water for 3 times, dry it with a centrifuge, collect the solid, and obtain the primary cellulose extract;

[0054] Put the first grade crude extract of cellulose into a 250mL Erlenmeyer flask, then add 5wt% dilute NaOH aqueous solution, the mass ratio of the first grade crude extract of cellulose and dilute NaOH aqueous solution is 1:4, and put it into an autoclaved Keep the pot at a temperature of 120°C for 120 minutes, shake out the lye and lignin dissolved in it with a centrifuge, wash it with deionized water for 3 times, dry it with a centrifuge, collect the solids, and o...

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Abstract

The invention provides a graphene material with a fiber shape as well as a preparation method and an application thereof, and relates to the field of graphene. The graphene material provided by the invention has a crystal structure of graphene, and has the fiber shape; the graphene material has a diameter of 10 nm to 20 [mu]m; and the length of the graphene material is greater than or equal to 100[mu] m. According to the detection result of embodiments, the graphene material provided by the invention has the tissue morphology of fibers as well as the crystal structure of graphene, and can beused in the fields, such as the field of textile which is difficult for graphene powder materials and graphene single crystal materials to use. The graphene material with the fiber shape can be blended with various fibers, and various graphene composite fabrics are manufactured, so that the application range of the graphene material is greatly expanded.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a fiber-shaped graphene material and a preparation method and application thereof. Background technique [0002] Carbon materials are an important branch of the material field. From the end of the last century to this century, new allotropes of carbon and new carbon materials have emerged in the fields of scientific theory and technology. Before the 1980s, the only known carbon allotropes were graphite, diamond, and amorphous carbon. After the 1980s, carbon allotropes fullerene (carbon 60, C60), carbon nanotubes and graphene. In particular, Graphene, discovered in 2004, is a two-dimensional planar crystal of carbon on the atomic scale, breaking the concept of traditional physics, forming new theories and technologies in science, and bringing new ideas to the field of material science. A new material. [0003] Graphene materials have various forms, such as graphene single crystal, graph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/16C01B32/184
CPCD01F9/16C01B32/184C01B2204/32
Inventor 杜奇石龙思宇唐培朵黄日波
Owner GUANGXI ACAD OF SCI