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Antioxidation treatment process for high purity graphite

A processing technology and high-purity graphite technology, applied in the field of graphite, can solve problems such as easy corrosion, and achieve the effects of reducing porosity, improving oxidation resistance and prolonging service life.

Inactive Publication Date: 2015-05-06
QINGDAO TAIHAODA CARBON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the decomposition and condensation of organic substances in the manufacturing process of graphite materials make artificial graphite materials porous, and a certain amount of tiny ash remains in the gaps of high-temperature graphite, making graphite materials prone to corrosion in high-temperature oxidizing media

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] The anti-oxidation treatment process of high-purity graphite in this embodiment includes the following steps: (1) clean the graphite to be treated with water, and then dry it naturally to constant weight; (2) put the impregnating agent into a storage tank, and then Put the cleaned graphite into a vacuum impregnation tank, vacuumize, heat to 100°C, and when the vacuum degree is 0.09MPa, close the vacuum valve, pump in the impregnating agent, and impregnate under pressure for 2 hours; (3) After the impregnation is completed, take out Graphite material is dried in an oven at a temperature of 150°C, and then heat-treated. After treatment, it can be placed in a vacuum container to air to room temperature.

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PUM

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Abstract

The invention discloses an antioxidation treatment process for high purity graphite. The process includes: washing the to-be-treated graphite clean, then conducting natural drying to a constant weight; putting an impregnant into a storage tank, then putting the washed graphite into a vacuum impregnation tank, performing vacuum pumping, conducting heating to 100DEG C, when the vacuum degree is 0.09MPa, closing a vacuum valve, sucking the impregnant into the vacuum impregnation tank, and carrying out pressurization impregnation for 2h; at the end of impregnation, taking out the graphite material, conducting drying in an oven at 150DEG C, then performing heat treatment, and then placing the material in a vacuum container to air it to room temperature. Surface treatment on graphite by vacuum impregnation can reduce the porosity of the material surface, improve its antioxidation properties, and prolong the service life.

Description

[0001] technical field [0002] The invention belongs to the technical field of graphite, and in particular relates to an anti-oxidation treatment process of high-purity graphite. [0003] Background technique [0004] Graphite material has the characteristics of high temperature strength, good electrical conductivity and heat transfer, thermal shock resistance, corrosion resistance, self-lubrication, etc., and has become an important conductive material and structural material in contemporary industry. The industrial field shows excellent application characteristics. However, the decomposition and condensation of organic substances in the manufacturing process of graphite materials make artificial graphite materials porous, and a certain amount of tiny ash remains in the gaps of high-temperature graphite, making graphite materials prone to corrosion in high-temperature oxidizing media. [0005] Contents of the invention [0006] In order to overcome the above-mentioned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/81
Inventor 乔帅
Owner QINGDAO TAIHAODA CARBON MATERIAL