Method for preparing carbon/carbon composite profiles

A carbon composite material and composite material technology, which is applied in the field of preparation of carbon/carbon composite material profiles, can solve problems not involved in the preparation method of carbon/carbon composite material profiles, achieve simple shaping methods, reduce production costs, and shorten production cycles Effect

Active Publication Date: 2010-02-03
XIAN CHAOMA SCI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In Japanese patent JP7-117026, a method for preparing special-shaped parts of carbon fiber-reinforced metal matrix composites is mentioned, and in U.S. Patent US6647692B1, a method for preparing special-shaped parts of fiber-reinforced composite materials is mentioned, but neither domestic nor foreign patents Relating to a preparation method of carbon / carbon composite material profiles

Method used

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  • Method for preparing carbon/carbon composite profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 1K viscose silk-based plain carbon cloth is impregnated with resin by dipping machine, and the glue content is about 20wt%; the carbon cloth is cut and laid on the graphite mandrel; external pressure is applied to cure and shape the final curing temperature The temperature is about 150°C, and the density is 1.10g / cm 3 Carbon / resin composite profile parts;

[0025] (2) Put the carbon / resin composite profile parts in the carbonization furnace for N 2 Carbonization treatment under protection, the temperature is 600°C, the resin matrix is ​​converted into resin carbon, and the carbon / resin composite material is transformed into a carbon / carbon composite material product, with a density of 0.90g / cm 3 ;

[0026] (3) The charcoal / charcoal products that have been carbonized are subjected to high-temperature opening treatment at 1300-2600°C;

[0027] (4) Carry out one cycle of asphalt pressure impregnation-carbonization densification and one CVI densification on the carbo...

Embodiment 2

[0031] (1) 6K asphalt-based twill carbon cloth is impregnated with resin through a dipping machine, and the glue content is about 40wt%; the carbon cloth is wound on a steel mandrel; it is molded and cured by a hot press, and the final curing temperature is about 180°C , made with a density of 1.25g / cm 3 Carbon / resin composite profile parts;

[0032] (2) Put the carbon / resin composite profile parts in the carbonization furnace for N 2 Carbonization treatment under protection, the temperature is 800°C, the resin matrix is ​​converted into resin carbon, and the carbon / resin composite material is transformed into a carbon / carbon composite product with a density of 1.15g / cm 3 ;

[0033] (3) The carbonized carbon / carbon products are subjected to 2 cycles of resin pressure impregnation-carbonization supplementary densification and 1 cycle of CVI densification, and the density of the product after supplementary densification is 1.50g / cm 3 ;

[0034] (4) Put the supplemented and d...

Embodiment 3

[0037] (1) The 24K polyacrylonitrile-based satin carbon cloth is impregnated with resin by a dipping machine, and the glue content is about 60wt%; the carbon cloth is cut and laid on the steel mandrel; the external pressure is applied to solidify the shape through the external tooling, and the solidification is completed. The temperature is about 220°C, and the density is 1.20g / cm 3 Carbon / resin composite profile parts;

[0038] (2) Put the carbon / resin composite profile parts in the carbonization furnace for N 2 Carbonization treatment under protection, the temperature is 1100°C, the resin matrix is ​​converted into resin carbon, and the carbon / resin composite material is transformed into a carbon / carbon composite product with a density of 1.05g / cm 3 ;

[0039] (3) Carry out 3 cycles of CVI densification on the carbonized carbon / carbon product, and the density of the product after the densification is 1.45g / cm 3 ;

[0040] (4) After the carbon / carbon products after suppleme...

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Abstract

The invention discloses a method for preparing carbon/carbon composite profiles, comprising the following steps: after carbon fiber cloths are impregnated into resins, curing the carbon fiber cloths by way of external tooling pressing or mould pressing after cutting, layering or winding, and preparing carbon/resin based composite profile products after curing and demoulding; carrying out carbonization treatment under the protection of N2 to prepare carbon/carbon composite profile semi-finished products; carrying out supplementary densification treatment on the carbonized carbon/carbon composite profile semi-finished products by metallic or graphite moulds and tooling; carrying out mechanical processing on the carbon/carbon composite profile semi-finished products subjected to supplementarydensification to prepare the carbon/carbon composite profile products. The technology of the invention is simple, low in cost and strong in implementation. As carbon additive cloth cutting, layeringor winding and external tooling pressing or mould pressing curing and shaping modes are adopted, the prepared carbon/carbon composite profiles have a series of advantages as follows: the shaping modeis simple; the sizes of the products are hardly limited and mechanical processing is unnecessary in the thickness direction, thereby having superior performance-price ratio.

Description

technical field [0001] The invention belongs to the technical field of thermal field materials for industrial high-temperature furnaces, and in particular relates to a preparation method of a carbon / carbon composite material profile. Background technique [0002] Industrial high-temperature furnaces are necessary equipment in traditional industrial fields, new materials and new energy fields, and national defense industries. All or part of their thermal field is made of carbon / carbon composite materials, which mainly play two roles: heat insulation or structure. Carbon / carbon composite materials have been widely used in industrial high-temperature furnaces, and have completely solved the defects of graphite parts such as limited size and low strength. Carbon / carbon composite profiles are mainly used in the door frames of industrial furnaces, the protection of low-density insulation materials, the glass industry and many other fields. [0003] In Japanese patent JP7-117026, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/83
Inventor 陈青华肖志超侯卫权苏君明彭志刚王石头
Owner XIAN CHAOMA SCI TECH
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