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High-strength carbon graphite material as well as preparation method and application thereof

A carbon graphite, high-strength technology, applied in the field of modified carbon graphite materials and its preparation, and modified carbon fiber, can solve the problems of difficult handling of carbon fiber waste, poor impregnation effect, complicated preparation process, etc., and achieve simplified production process and good application Foreground, the effect of uniform pore size distribution

Active Publication Date: 2022-07-01
长沙诚智新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a high-strength carbon graphite material and its preparation method and application, in order to solve the problem that the existing carbon fiber waste is difficult to handle and the existing carbon graphite material preparation process Complicated technical issues with poor impregnation

Method used

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  • High-strength carbon graphite material as well as preparation method and application thereof
  • High-strength carbon graphite material as well as preparation method and application thereof
  • High-strength carbon graphite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The high-strength carbon-graphite composite material of this embodiment has a morphology and structure such as figure 1 shown, including the following components by mass:

[0031] 20 parts of silicon composite powder, 20 parts of graphite powder, 40 parts of carbon fiber powder, 20 parts of phenolic resin and 0.1 part of silane coupling agent. The silicon composite powder mainly comes from the silicon carbide layer formed on the surface of Czochralski monocrystalline silicon, and the leftover material when processing silicon ingots.

[0032] The high-strength carbon-graphite composite material of the present embodiment is prepared by the following method:

[0033] (1) Dry mixing 200g silicon composite powder and 200g graphite powder in a kneading pot for 30min, then adding 100g silane coupling agent with a concentration of 1wt% and kneading for 20min to obtain Mixture A.

[0034] (2) add 400g of carbon fiber powder to mixed material A and knead for 30min, then add 200...

Embodiment 2

[0041]The high-strength carbon-graphite composite material of this embodiment includes the following components in parts by mass:

[0042] 20 parts of silicon composite powder, 25 parts of graphite powder, 35 parts of carbon fiber powder, 20 parts of phenolic resin and 0.1 part of silane coupling agent; wherein, the carbon fiber powder is the carbonaceous micropowder waste product produced by the production and processing of photovoltaic thermal places.

[0043] The high-strength carbon-graphite composite material of the present embodiment is prepared by the following method:

[0044] (1) Dry mixing 200g silicon composite powder and 250g graphite powder in a kneading pot for 30min, then adding 100g silane coupling agent with a concentration of 1wt% and kneading for 20min to obtain mixture A.

[0045] (2) add 350g of carbon fiber powder to mixed material A and knead for 30min, then add 200g of phenolic resin and knead for 20min to obtain mixed paste;

[0046] (3) Press molding...

Embodiment 3

[0053] The high-strength carbon-graphite composite material of this embodiment includes the following components in parts by mass:

[0054] 25 parts of silicon composite powder, 20 parts of graphite powder, 35 parts of carbon fiber powder, 20 parts of phenolic resin and 0.1 part of silane coupling agent; among them, the carbon fiber powder is a carbonaceous micropowder waste product produced by processing photovoltaic thermal places.

[0055] The high-strength carbon-graphite composite material of the present embodiment is prepared by the following method:

[0056] (1) Dry mixing 200g silicon composite powder and 250g graphite powder in a kneading pot for 30min, then adding 100g silane coupling agent with a concentration of 1wt% and kneading for 20min to obtain mixture A.

[0057] (2) adding 35 parts of carbon fiber powder to the mixture A and kneading for 30min, then adding 200g of phenolic resin and kneading for 20min to obtain a mixed paste;

[0058] (3) Press molding the ...

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Abstract

The invention discloses a high-strength carbon-graphite composite material and a preparation method and application thereof.The high-strength carbon-graphite composite material can be used for manufacturing furnace structural parts and is prepared from, by mass, 25-35 parts of silicon composite powder, 15-25 parts of graphite powder, 40-50 parts of carbon fiber powder, 20-30 parts of phenolic resin and 1 part of silane coupling agent. The composite material disclosed by the invention is excellent in performance, obtains performance parameters similar to those of isostatic pressing graphite and a carbon / carbon composite material especially in the aspects of thermal, electrical and mechanical properties, and has good application prospects and application effects when being used for manufacturing structural parts for furnaces; the preparation method provided by the invention can realize uniform pore size distribution in the composite material, improves the impregnation efficiency and the impregnation effect, simplifies the production process, and reduces the production cost.

Description

technical field [0001] The invention relates to the field of carbon materials, in particular to a modified carbon fiber, a modified carbon graphite material and a preparation method thereof. Background technique [0002] With the rapid growth of the global new energy market, carbon-based materials in the photovoltaic industry and its upstream industries have flourished. However, on the one hand, when manufacturing and processing carbon-based products for photovoltaic thermal fields and thermal insulation, a large amount of carbonaceous micropowder is inevitably generated; for the micropowder of carbon / carbon composite materials, it is difficult to recycle efficiently, and most of them are landfilled. It is difficult to assess its harmfulness to the environment. On the other hand, there are a lot of harmful non-carbon micropowders on the surface after heat preservation and heating service. Such materials will cause environmental damage and pollution during solid waste treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/52C04B35/532C04B35/622
CPCC04B35/83C04B35/52C04B35/522C04B35/532C04B35/62204C04B2235/77C04B2235/96C04B2235/3826C04B2235/428
Inventor 陈辉陈坚涂川俊巩佩
Owner 长沙诚智新材料科技有限公司