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Preparation process for graphene composite carbon-based high-temperature film

A graphene composite and preparation process technology, applied in graphene, sustainable manufacturing/processing, nano-carbon and other directions, can solve problems such as difficult dispersion and easy flocculation, achieve simple production method, solve aggregation overheating, and market promotion and application effects obvious effect

Pending Publication Date: 2019-03-19
杨秀峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphite flakes cannot be directly applied as a conductive material. Because the surface of the unprocessed carbon-based material contains a large number of polar groups, it has disadvantages such as difficult dispersion, easy flocculation, and high temperature aggregation.

Method used

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  • Preparation process for graphene composite carbon-based high-temperature film
  • Preparation process for graphene composite carbon-based high-temperature film
  • Preparation process for graphene composite carbon-based high-temperature film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051]A preparation process for a graphene composite carbon-based high-temperature film, comprising the following steps:

[0052] (1) Making flake graphite powder

[0053] Select flake graphite with a purity of 99% and a particle size of 1-2 mm, and ball mill it to a particle size of 20 μm in a dry environment at room temperature to obtain fine-grained graphite flake powder;

[0054] (2) Select a graphene dispersant, the selected material is a graphene oxide dispersion liquid with a purity of 99wt%, a sheet diameter of 3μm, and a concentration of 10mg / ml;

[0055] (3) Choose a specific gravity between 0.96-0.97 and a viscosity of 100±8mm 2 / s of methyl silicone oil;

[0056] (4) Add the above-mentioned graphene dispersant to the fine-grained flake graphite powder obtained in (1) at a mass ratio of 0.8% and methyl silicone oil at a mass ratio of 0.2%, and stir for 60 minutes at normal temperature and pressure , stirring speed is 400r / min, obtains the incompletely mixed graph...

Embodiment 2

[0093] A preparation process for a graphene composite carbon-based high-temperature film, comprising the following steps:

[0094] (1) Making flake graphite powder

[0095] Select flake graphite with a purity of about 99% and a particle size of 1 mm, and ball mill it to a particle size of 30 μm in a dry environment at room temperature to obtain fine-grained graphite flake powder;

[0096] (2) Select a graphene dispersant, the selected material is a graphene oxide dispersion liquid with a purity of 99wt%, a sheet diameter of 5μm, and a concentration of 10mg / ml;

[0097] (3) Choose a specific gravity of 0.96 and a viscosity of 100±8mm 2 / s of methyl silicone oil;

[0098] (4) Add the above-mentioned graphene dispersant to the fine-grained flake graphite powder obtained in (1) at a mass ratio of 0.5% and methyl silicone oil at a mass ratio of 0.5%, and stir for 60 minutes at normal temperature and pressure , the stirring speed is 300r / min, and the graphene-carbon matrix compos...

Embodiment 3

[0105] The preparation technology of graphene composite carbon-based high-temperature film comprises the following steps:

[0106] (1) Making flake graphite powder

[0107] Select flake graphite with a purity of about 99% and a particle size of 2 mm, and ball mill it to a particle size of 40 μm in a dry environment at room temperature to obtain fine-grained graphite flake powder;

[0108] (2) Select the graphene dispersant, the selected material is graphene oxide dispersion liquid, the purity is 99wt%, wherein the purity is 99wt%, the sheet diameter is 5μm, and the concentration is 10mg / ml;

[0109] (3) Choose a specific gravity between 0.96-0.97 and a viscosity of 100±8mm 2 / s of methyl silicone oil;

[0110] (4) Add the above-mentioned graphene dispersant to the fine-grained flake graphite powder obtained in (1) at a mass ratio of 0.5% and methyl silicone oil at a mass ratio of 0.5%, and stir for 60 minutes at normal temperature and pressure , the stirring speed is 500r / m...

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Abstract

The invention belongs to the field of graphene composite material preparation technologies and relates to a preparation process for a graphene composite carbon-based high-temperature film. The processincludes the following steps that: (1) crystalline graphite powder is prepared; (2) raw materials are selected; (3) mixing is performed; and (4) drying, fluidization, mixing, and material molding areperformed. According to the preparation process of the invention, a high-conductivity and high-thermal conduction material is obtained through a specific process and a specific proportioning mode. The production method, as a clean and environmentally friendly production technology, has the advantages of simplicity, low energy consumption, and no harmful pollutant discharge. The electrothermal conversion efficiency of the obtained graphene composite carbon-based high-temperature film is as high as 99.5%, and industrial and civil heating problems can be solved with low power consumption.

Description

technical field [0001] The invention belongs to the field of preparation technology of graphene composite materials, and in particular relates to a preparation technology of graphene composite carbon-based high-temperature film. Background technique [0002] With the process of industrialization, more and more industrial equipment needs heating materials and products. Generally, boiler steam and gas equipment are used to provide heat sources, while electric heating equipment is due to low thermoelectric conversion efficiency, high energy consumption, fragility, attenuation, etc. The problem is that it is generally not selected. As an electric heating material product, its high conversion efficiency, low energy consumption, and high stability have become the key problems of electric heating products. [0003] At present, carbon-based electric heating materials mainly use carbon fiber, carbon crystal and other materials. Due to the internal organic components, there is a heati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/20H05B3/14C01B32/184
CPCH05B3/145H05B3/20C01B32/184H05B2203/013H05B2203/017Y02P20/10
Inventor 杨秀峰刘汉明张振伟谭善涛
Owner 杨秀峰
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