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Method for preparing carbon/carbon composite material

A technology of carbon composite materials and prefabricated bodies, which is applied in the field of preparing carbon/carbon composite materials, can solve the problems of long densification time, achieve the effects of promoting diffusion and mass transfer, expanding application fields, and high carbon fixation efficiency

Active Publication Date: 2013-09-18
GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of carbon / carbon composites by the alcohol carbon source CVI process requires a pyrolysis temperature above 1000°C and a densification time of up to 96 hours.

Method used

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  • Method for preparing carbon/carbon composite material
  • Method for preparing carbon/carbon composite material
  • Method for preparing carbon/carbon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Dissolve glucose in water to obtain a glucose solution with a concentration of 50g / L, that is, glucose dispersion liquid;

[0032] 2) Add the glucose solution into the hydrothermal kettle, and then add the integral carbon felt preform (Jiangsu Yixing Tianniao High Technology Co., Ltd.) with a fiber volume fraction of 10%, so that the glucose solution is immersed in the integral carbon felt preform to obtain the reaction system A ; Assemble the hydrothermal kettle, and then react the reaction system A in the hydrothermal kettle at 180°C for 3h under the condition of resistance heating, and naturally cool to room temperature after the reaction, take out the whole carbon felt prefabricated body deposited with glucose and Washing with water to obtain a carbon / carbon composite material; wherein, the filling ratio of the hydrothermal kettle in step 2) is controlled at 0.4.

Embodiment 2

[0034] 1) Dissolve glucose in water to obtain a glucose solution with a concentration of 50g / L, that is, glucose dispersion liquid;

[0035] 2) Add the glucose solution into the hydrothermal kettle, and then add the integral carbon felt preform (Jiangsu Yixing Tianniao High Technology Co., Ltd.) with a fiber volume fraction of 10%, so that the glucose solution is immersed in the integral carbon felt preform to obtain the reaction system A ; Assemble the hydrothermal kettle, and then react the reaction system A in the hydrothermal kettle at 180°C for 3h under the condition of resistance heating, and naturally cool to room temperature after the reaction, take out the whole carbon felt prefabricated body deposited with glucose and Wash it with water; wherein, the filling ratio of the hydrothermal kettle in step 2) is controlled at 0.4;

[0036] 3) Immerse the whole carbon felt prefabricated body that has been washed and deposited glucose in the glucose solution obtained in step 1...

Embodiment 3

[0043] 1) Dissolve starch in water to obtain a starch solution with a concentration of 100g / L, that is, starch dispersion liquid;

[0044]2) Add the starch solution into the hydrothermal kettle, and then add the needle-punched carbon felt preform (Jiangsu Yixing Tianniao High Technology Co., Ltd.) with a fiber volume fraction of 20%, so that the starch solution is immersed in the needle-punched carbon felt preform to obtain a reaction System A: Assemble the hydrothermal kettle, and then react the reaction system A in the hydrothermal kettle at 220°C for 2 hours under the condition of microwave heating, and naturally cool to room temperature after the reaction, and prefabricate the needle-punched carbon felt deposited with starch The body was taken out and washed with water to obtain a carbon-carbon composite material; wherein, the filling ratio of the hydrothermal kettle in step 2) was controlled at 0.5.

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Abstract

The invention discloses a method for preparing a carbon / carbon composite material. The method comprises the steps of: uniformly mixing a biomass capable of being hydrolyzed with water to obtain a biomass dispersing liquid; immersing a carbon fiber prefabricated body in the biomass dispersing liquid to obtain a reaction system Al; then reacting the reaction system A in a hydrothermal kettle under the heating condition, after the reaction is ended and the reaction system is cooled, taking the carbon fiber prefabricated body deposited with the biomass out and washing with water to obtain the carbon / carbon composite material. The method is green and environmental-friendly, efficient and feasible, is low in cost and reaction temperature and is capable of realizing rapid densification of the carbon / carbon composite material. The prepared carbon / carbon composite material is a carbon fiber reinforced composite material using the biomass carbon as a matrix, and is rich in hydroxide groups and carbonyl groups on the surface, thereby being good in biological activity.

Description

technical field [0001] The invention belongs to the field of carbon material preparation, and in particular relates to a method for preparing carbon / carbon composite materials. Background technique [0002] As a new type of carbon material with unique properties, carbon / carbon composite material combines the excellent performance of carbon fiber and carbon material. It is not limited to aviation, aerospace and other cutting-edge technology fields, but has been extended to many civilian fields such as transportation, chemical industry, sports and medicine. From the liquid phase impregnation technology using petroleum or coal tar pitch, to the chemical vapor deposition technology using gaseous hydrocarbons, and the latest film boiling deposition technology using liquid hydrocarbons, the preparation cycle of carbon / carbon composites is continuously shortened, and the densification efficiency However, its carbon source still cannot get rid of the limitation of fossil fuels and t...

Claims

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Application Information

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IPC IPC(8): C04B35/83
Inventor 李翠艳欧阳海波黄剑锋费杰曹丽云孔新刚卢靖
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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