Process for preparing carbon-to-carbon composite material

A technology of carbon composite materials and wood, which is applied in the field of carbon-carbon composite material preparation, can solve the problems that it is difficult to manufacture high-performance carbon-carbon composite materials at low cost, the molding process is time-consuming, laborious, and expensive, and achieves light weight, Unique impact resistance and good abrasion resistance

Inactive Publication Date: 2004-03-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because carbon fiber is used as the reinforcing phase of carbon-carbon composite materials in this technology, the cost is extremely expensive and the process is complicated, especially the forming process of prefabricated parts is time-consuming and laborious, and it is difficult to achieve the purpose of manufacturing high-performance carbon-carbon composite materials at low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Choose natural wood structure-oak as raw material, put it into a non-oxygen atmosphere furnace and burn it, heat up to 300°C at a heating rate of 0.5°C / min, and then keep it warm for 2 hours to obtain a preformed skeleton of carbon-carbon composite material; then The thermoplastic pitch is impregnated into the preformed skeleton of the carbon-carbon composite material by the vacuum high-pressure impregnation method, and put back into the non-oxygen atmosphere furnace for non-oxidation treatment. The temperature is raised to 300°C at a heating rate of 0.5°C / min, and the temperature is kept. 2 hours; then the thermoplastic pitch is put into the preformed skeleton of the carbon-carbon composite material by the vacuum high pressure impregnation method, and put into a non-oxygen atmosphere furnace for non-oxidation treatment, and this is repeated twice to obtain a dense skeleton carbon / Precursor carbon complex; finally put the preformed skeleton / precursor carbon complex into...

Embodiment 2

[0020] Choose wood fiber-cherry wood fiber as raw material to make medium density fiberboard, and then put it into a non-oxygen atmosphere furnace for firing, at a heating rate of 10°C / min, raise the temperature to 1400°C, and then keep it for 25 hours to obtain carbon-carbon The preformed skeleton of the composite material; then the polyacrylonitrile PAN resin is impregnated into the preformed skeleton of the carbon-carbon composite material by the vacuum high-pressure impregnation method, and then put back into the non-oxygen atmosphere furnace for non-oxidation treatment at 10°C / The heating rate is divided into 1400 ° C and kept for 25 hours; then the polyacrylonitrile PAN resin is impregnated into the preformed skeleton of the carbon-carbon composite material through the vacuum high pressure impregnation method, and put into a non-oxygen atmosphere furnace for The non-oxidation treatment was repeated four times to obtain a dense skeleton carbon / precursor carbon complex; fi...

Embodiment 3

[0022] Select the natural wood structure-oak wood as the raw material, put it into a non-oxygen atmosphere furnace for firing, heat up to 2500°C at a heating rate of 20°C / min, and then keep it warm for 48 hours to obtain a preformed skeleton of carbon-carbon composite material; Then impregnate the phthalocyanine resin into the preformed skeleton of the carbon-carbon composite material by vacuum high-pressure impregnation method, put it back into the non-oxygen atmosphere furnace for non-oxidation treatment, and raise the temperature to 2500 °C at a heating rate of 20 °C / min. ℃, heat preservation for 48 hours; then impregnate the boron-modified phenolic resin into the preformed skeleton of the carbon-carbon composite material by the vacuum high-pressure impregnation method, and put it into a non-oxygen atmosphere furnace for non-oxidation treatment, and repeat this process for 3 The second step is to obtain a dense skeleton carbon / precursor carbon complex; finally, put the prefo...

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Abstract

The preparation of carbon-carbon composite material belongs to the field of composite material. Timber with special porous structure and chemical components is first pre-treated to form pre-formed template skeleton for carbon-carbon composite material, and through soaking with carbon precursor compound of carbon and subsequent densification and graphitization, the timber has its macro structure converted to carbon-carbon composite material to prepare the carbon-carbon composite material with high comprehensive performance. The carbon-carbon composite material of the present invention has high freedom in design, light weight, ablation resistance, wear resistance, high heat strength, high oxygen resistance and other excellent performance.

Description

technical field [0001] The invention relates to a method for preparing a carbon-carbon composite material, in particular to a method for preparing a carbon-carbon composite material with high comprehensive performance by using a wood structure, and belongs to the field of composite materials. Background technique [0002] In recent years, carbon-carbon composite materials have developed rapidly. Carbon-carbon composite materials have the characteristics of high temperature resistance, thermal shock resistance, high strength retention rate and chemical inertness, excellent friction and wear performance and anti-ablation performance at high temperatures, making them widely used in aerospace brake pads, space shuttle thermal Protection and rocket nozzles and other fields have been widely used. At the same time, carbon-carbon composite materials can be made into carbon-carbon composite products with different structures, specifications and shapes according to needs, which are us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/83
Inventor 范同祥张荻付宇
Owner SHANGHAI JIAO TONG UNIV
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