Method for improving graphitization and carbonizing degree of carbon material based on magnetic field and catalysis

A carbonization degree and carbon material technology, applied in the field of material engineering, can solve problems such as poor controllability, and achieve the effect of improving the degree of graphitization and carbonization

Inactive Publication Date: 2009-05-27
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of the above-mentioned graphitization treatment process is that the structure of the generated graphite layer

Method used

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  • Method for improving graphitization and carbonizing degree of carbon material based on magnetic field and catalysis
  • Method for improving graphitization and carbonizing degree of carbon material based on magnetic field and catalysis
  • Method for improving graphitization and carbonizing degree of carbon material based on magnetic field and catalysis

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Embodiment 1

[0027] figure 1 The basic experimental device diagram is given, and the main functions of each component are as follows:

[0028] Ceramic tube 2: hold the sample and create a nitrogen-protected atmosphere for the reaction;

[0029] Condensate 8: reduce the temperature of the furnace wall;

[0030] Three-way valve 1 and two-way valve 4: mainly used to pass nitrogen into the ceramic tube and vacuumize;

[0031] Buffer balloon 9: After vacuuming, appropriate nitrogen gas is retained in it to ensure that the reaction process is carried out under the protection of nitrogen gas;

[0032] Thermocouple 3: Measure the temperature in the furnace and connect with the temperature controller;

[0033] Magnet 7: Provide a stable magnetic field in the sample placement area;

[0034] Silicon carbon rod 6: used for heating, connected to the temperature controller to raise the temperature according to the program under its control;

[0035] Rubber stopper 5: seal the ceramic tube to ensure...

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Abstract

The invention discloses a method for improving the graphitization of a carbon material and the carburization degree based on a magnetic field and the catalysis. The method aims to apply the magnetic field induction and control the structural orientation of a newly generated graphite layer to ensure that the carbon material grows according to the preset orientation, thereby achieving the aim of improving the electromechanical properties of the carbon material. A proper amount of ferromagnetic catalyst is added into the carbon material, and then the high temperature carbonization and graphitization treatment is performed under the action of an externally-applied magnetic field; and the graphitization based on the carbon material is performed on the surface of the catalyst, and the ferromagnetic catalyst can directionally move on a molten carbon matrix under the action of the magnetic field to ensure that the graphitization is performed according to the direction of the magnetic field, thereby achieving the aim of controlling and affecting the structural orientation of the newly generated graphite layer to produce the carbon material with high orientation degree and high graphitization degree, and playing an active role in the increase and improvement of the electromechanical properties of the carbon material.

Description

technical field [0001] The invention belongs to the technical field of material engineering and relates to a method for improving the graphitization and carbonization degree of carbon materials based on magnetic field and catalysis. Background technique [0002] Carbon materials have superior properties such as high strength, high modulus, high thermal conductivity, small thermal expansion coefficient, low resistivity, and low density, and are widely used in aerospace, industrial, and sporting goods fields. The performance of carbon materials is closely related to the structure of carbon materials. The degree of graphitization is one of the most important structural parameters of carbon materials. Many studies have shown that by doping some inorganic and organic additives, the graphitization temperature can be reduced or the degree of graphitization can be increased at a certain heat treatment temperature. Therefore, the research on graphitization of carbon materials, espe...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B31/04
Inventor 蔡青云徐世海张风英
Owner HUNAN UNIV
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