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A carbon-based adhesive for high dimensional stability carbon products and preparation method thereof

A technology for dimensional stability and carbon products, which is applied in the field of carbon-based adhesives for high-dimensionally stable carbon products and its preparation, can solve the problems of shape change and insufficient crosslinking degree of carbon-based adhesives, and achieve Low shrinkage, improved high-temperature dimensional stability and adhesion, and reduced production costs

Active Publication Date: 2021-12-28
山东红点新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) To overcome the problem of insufficient crosslinking degree of the carbon-based adhesive added in the preparation process of carbon products and the change of shape under high temperature;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A carbon-based adhesive for carbon products with high dimensional stability. The raw materials of the carbon-based adhesive include: phenolic resin, pitch, furan, carbon black, CMC, and PVA.

[0040] The raw materials of the carbon-based adhesive include, by weight, 35 parts of phenolic resin, 50 parts of pitch, 7 parts of furan, 5 parts of carbon black, 2 parts of CMC, and 1 part of PVA. Wherein, the CMC is sodium carboxymethyl cellulose, and the PVA is polyvinyl alcohol.

[0041] The preparation method of the carbon-based adhesive includes: raw material pretreatment, mixing, preoxidation treatment, and crushing.

[0042] In the raw material pretreatment, the solid raw materials to be crushed are respectively crushed to a predetermined particle size, and sieved to make the particle size of the raw material uniform, so as to obtain the pretreated raw material.

[0043] Wherein, the phenolic resin and pitch are crushed to 150 mesh, and other raw materials such as carbon...

Embodiment 2

[0056] A carbon-based adhesive for carbon products with high dimensional stability. The raw materials of the carbon-based adhesive include: phenolic resin, pitch, furan, carbon black, CMC, and PVA.

[0057] The raw materials of the carbon-based adhesive include, by weight, 50 parts of phenolic resin, 35 parts of pitch, 5 parts of furan, 5 parts of carbon black, 3 parts of CMC and 2 parts of PVA. Wherein, the CMC is sodium carboxymethyl cellulose, and the PVA is polyvinyl alcohol.

[0058] The preparation method of the carbon-based adhesive includes: raw material pretreatment, mixing, preoxidation treatment, and crushing.

[0059] In the raw material pretreatment, the solid raw materials to be crushed are respectively crushed to a predetermined particle size, and sieved to make the particle size of the raw material uniform, so as to obtain the pretreated raw material.

[0060] Wherein, the phenolic resin and pitch are crushed to 150 mesh, and other raw materials such as carbon...

Embodiment 3

[0073] A carbon-based adhesive for carbon products with high dimensional stability. The raw materials of the carbon-based adhesive include: phenolic resin, pitch, furan, carbon black, CMC, and PVA.

[0074] The raw materials of the carbon-based adhesive include, by weight, 45 parts of phenolic resin, 40 parts of pitch, 8 parts of furan, 3 parts of carbon black, 2 parts of CMC, and 2 parts of PVA. Wherein, the CMC is sodium carboxymethyl cellulose, and the PVA is polyvinyl alcohol.

[0075] The preparation method of the carbon-based adhesive includes: raw material pretreatment, mixing, preoxidation treatment, and crushing.

[0076] In the raw material pretreatment, the solid raw materials to be crushed are respectively crushed to a predetermined particle size, and sieved to make the particle size of the raw material uniform, so as to obtain the pretreated raw material.

[0077] Wherein, the phenolic resin and pitch are crushed to 150 mesh, and other raw materials such as carbo...

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Abstract

The invention provides a carbon-based adhesive for carbon products with high dimensional stability. The raw materials of the carbon-based adhesive include: phenolic resin, asphalt, furan, carbon black, CMC, and PVA. The present invention also provides a method for preparing a carbon-based adhesive for high dimensional stability carbon products. The preparation method includes: a pre-oxidation treatment step; carried out below; the pre-oxidation treatment step includes a first rapid temperature rise stage and a second slow temperature rise stage. The beneficial effects of the present invention are: the self-crosslinking degree of the prepared carbon-based adhesive is significantly improved, the shape of the carbon product is stable during the high-temperature heat treatment process, and the carbon product is not easy to expand, shrink and other dimensions during the high-temperature heat treatment process. Change; while improving the high-temperature dimensional stability and adhesion of carbon products, it can effectively improve the strength of carbon products; it can meet the product quality requirements of special-shaped carbon products that require high dimensional accuracy.

Description

technical field [0001] The invention relates to the field of new materials for carbon products, in particular to a carbon-based adhesive for carbon products with high dimensional stability and a preparation method thereof. Background technique [0002] Carbon materials are a class of non-metallic materials composed of carbon as the main chemical composition. New carbon materials are gradually being widely used in various aspects of the national economy because of their unique properties such as high temperature resistance, corrosion resistance, good chemical stability, adjustable electrical and thermal conductivity, impact resistance, porosity, and low thermal expansion. , such as national defense technology, military products, aerospace and non-ferrous metallurgy and other fields. [0003] The applicant found that due to the heterogeneity among the precursors of carbon materials as raw materials, and the tendency of decomposition, polymerization and other reactions in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/634C04B35/52C04B35/532
CPCC04B35/634C04B35/63496C04B35/532C04B35/52C04B2235/48C04B2235/96C04B2235/6562C04B2235/6567
Inventor 李华青刘永
Owner 山东红点新材料有限公司
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