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Special carbon material and production method thereof

A production method and carbon material technology, applied in the field of material science, can solve the problems of reduced impact resistance, high bulk density, and difficulty in meeting demand, and achieve improved electrical conductivity and wear resistance, simple preparation process, and improved flexural strength. Effect

Inactive Publication Date: 2017-05-17
SUZHOU GRAPHENE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current carbon-graphite materials usually have shortcomings such as insufficient bending resistance, impact resistance and ability to reduce the growth of micro-cracks in use, and even if the preparation process of the existing carbon-graphite materials is complicated, high energy consumption and high cost The re-impregnation and re-baking operation can only make it meet the conventional physical and mechanical properties, the compressive and flexural strength is low, and the bulk density is too high
Moreover, the existing carbon graphite materials also have defects such as low electrical conductivity and poor wear resistance.
Therefore, the existing carbon and graphite materials have been difficult to meet the needs of current practical applications

Method used

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  • Special carbon material and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0061] Embodiment 1 The manufacturing method of a special carbon material involved in this embodiment includes the following steps:

[0062] (1) Graphene and pitch are mixed together and stirred to obtain graphene composite pitch;

[0063] (2) Kneading, cooling and crushing aggregate, graphene and the graphene composite pitch obtained in step (1) to obtain ground powder (also called mixed aggregate);

[0064] (3) charging, forming and demolding the mixed aggregate to obtain a green body;

[0065] (4) The green body is roasted, and then immersed in the graphene composite pitch prepared in the same manner as in step (1), and the aforementioned roasting and dipping operations are alternately repeated 3 times, and finally graphitized to obtain a special carbon material. It is a carbon graphite composite graphene material.

[0066] Further, the graphene used in the foregoing step (1) can be selected from sulfonated graphene, the sheet diameter size is 10-15 μm, and the number of layers is 3...

Embodiment 2

[0079] Embodiment 2 The manufacturing method of a special carbon material involved in this embodiment includes the following steps:

[0080] (1) Graphene and pitch are mixed together and stirred to obtain graphene composite pitch;

[0081] (2) Kneading, cooling and crushing aggregate, graphene and the graphene composite pitch obtained in step (1) to obtain ground powder (also called mixed aggregate);

[0082] (3) charging, forming and demolding the mixed aggregate to obtain a green body;

[0083] (4) The green body is roasted, and then immersed in the graphene composite pitch prepared in the same manner as in step (1), and the aforementioned roasting and immersing operations are alternately repeated twice, and finally graphitized to obtain a special carbon material. It is a carbon graphite composite graphene material.

[0084] Further, the graphene used in the foregoing step (1) can be selected from reduced graphene, and the sheet diameter size is 15 μm-20 μm, and the number of layers ...

Embodiment 3

[0097] Embodiment 3 The manufacturing method of a special carbon material involved in this embodiment includes the following steps:

[0098] (1) Graphene and pitch are mixed together and stirred to obtain graphene composite pitch;

[0099] (2) Kneading, cooling and crushing aggregate, graphene and the graphene composite pitch obtained in step (1) to obtain ground powder (also called mixed aggregate);

[0100] (3) charging, forming and demolding the mixed aggregate to obtain a green body;

[0101] (4) The green body is roasted, and then immersed in the graphene composite pitch prepared in the same manner as in step (1), and the aforementioned roasting and immersing operations are alternately repeated twice, and finally graphitized to obtain a special carbon material. It is a carbon graphite composite graphene material.

[0102] Further, the graphene used in the foregoing step (1) can be selected from graphene oxide, the sheet diameter size is 0.5 μm-3 μm, and the number of layers is 6-1...

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Abstract

The invention discloses a special carbon material and a production method thereof. The production method of the special carbon material comprises the following steps: more than two raw materials are subjected to mixed kneading, breaking and graphitization, wherein at least one raw material comprises asphalt, and at least the other raw material comprises aggregate; graphene is introduced to the at least one raw material and / or at least one reaction intermediate before graphitization. The special carbon material has the characteristics of low density, high breaking strength, excellent electric conductivity and wear resistance and the like, and the preparation process is simple, low in energy consumption and suitable for mass production.

Description

Technical field [0001] The invention specifically relates to a special carbon material and a manufacturing method thereof, and belongs to the field of materials science. Background technique [0002] Special carbon materials have received more and more attention because of their specific properties different from ordinary carbon materials. For example, as a commonly used special carbon material, carbon graphite material has the characteristics of self-lubricating, high thermal conductivity, low linear expansion coefficient, high heat resistance, etc., and is widely used in machinery, electronics, optoelectronics, metallurgy, aerospace, chemical industry, Nuclear industry and other fields. [0003] However, the current carbon-graphite materials usually have shortcomings such as insufficient flexural resistance, impact resistance and insufficient ability to reduce microcrack propagation, and even if the existing carbon-graphite materials are used in the preparation process of comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/524C04B35/528C04B35/536C04B35/64
CPCC04B35/524C04B35/521C04B35/522C04B35/528C04B35/536C04B35/64C04B2235/6562C04B2235/6565C04B2235/768C04B2235/96
Inventor 相喜蒋永华张维
Owner SUZHOU GRAPHENE NEW MATERIAL TECH