Method for preparing high temperature furnace used carbon/carbon composite material cylinders

A carbon composite material and resin composite material technology, which is applied in the field of preparation of carbon/carbon composite material cylinders for high temperature furnaces, can solve the problems of high price, long densification period, uncontinuity, etc., and achieves reduction of production cost and shortening of production. Periodic, wide-ranging effects

Active Publication Date: 2009-06-03
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In U.S. Patent US04275493A and Japanese Patents JP2000086382, JP03015521, and JP03015522, carbon cloth or carbon fiber winding technical solutions for cylindrical parts are mentioned, but large-scale cylindrical parts, especially large-scale carbon / carbon composite cylinders There is no relevant discussion on the solution. In the patents ZL200610043184.5 and ZL200610043187.9 of Xi’an Chaoma Technology Co., Ltd., the preparation method of carbon / carbon composite cylindrical parts is proposed. The carbon fiber acupuncture structure is used as the prefabricated part, but the efficiency is low, Unfavorable factors such as long densification cycle, serious material waste, high cost and non-continuous operation make it expensive

Method used

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  • Method for preparing high temperature furnace used carbon/carbon composite material cylinders

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Experimental program
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Effect test

Embodiment 1

[0025] (1) The 3K viscose silk-based plain carbon cloth is impregnated with resin by the dipping machine, and the glue content is about 20wt%; the winding tension is controlled by the tension controller to be 2% of the carbon fiber strength, and the carbon cloth is wound on the steel cylinder tooling Above; the external pressure is applied by the tape wrapping method, the tension is controlled at about 3% of the tape strength, the maximum curing temperature is about 150°C, and the manufactured density is 1.20g / cm 3 carbon / resin composite cylindrical parts, where K represents the number of thousands of tows;

[0026] (2) Put the carbon / resin composite cylindrical 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 product with a density of 1.05g / cm 3 ;

[0027] (3) After the carboniz...

Embodiment 2

[0031] (1) The 12K asphalt-based twill carbon cloth is impregnated with resin by the dipping machine, and the glue content is about 45wt%; the winding tension is controlled by the tension controller to be 6% of the carbon fiber strength, and the carbon cloth is wound on the steel cylinder tooling; Curing and molding by vacuum bag method, the highest curing temperature is about 180°C, and the density is 1.35g / cm 3 carbon / resin composite cylindrical parts, where K represents the number of thousands of tows;

[0032] (2) Put the carbon / resin composite cylindrical 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) After the carbonized carbon / carbon product is subjected to resin vacuum impregnation / carbonization for one time, the densi...

Embodiment 3

[0037] (1) 24K polyacrylonitrile-based satin carbon cloth is impregnated with resin by dipping machine, and the glue content is about 60wt%; the winding tension is controlled by a tension controller to be 10% of the carbon fiber strength, and the carbon cloth is wound on a steel cylinder On the tooling: curing and molding by vacuum bag-autoclave method, the maximum curing temperature is about 220°C, the curing pressure is 1.2MPa, and the manufactured density is 1.47g / cm 3 Carbon / resin composite cylindrical parts;

[0038] (2) Put the carbon / resin composite cylindrical parts in the carbonization furnace for N 2 Carbonization treatment under protection, the temperature is 1000°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 1.35g / cm 3, where K represents the number of thousands of tows;

[0039] (3) Put the charcoal / charcoal products that have been carbonized i...

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Abstract

The invention discloses a method for preparing high temperature furnace used carbon / carbon composite material cylinders, which comprises the following steps: preparing carbon fiber rubberized cloth by dipping carbon fiber sheet in high-temperature phenolic resin of a rubber dip machine; controlling the winding tension of the carbon fiber rubberized cloth by a tension controller; pressurizing and solidifying the wound product after product winding; carbonizing the product; carrying out densification supplement according to the density of the product selectively; processing the product at a high temperature according to the service conditions of the high temperature furnace to adjust the comprehensive performance of the product; and mechanically processing the product according to a drawing to obtain a high temperature furnace used carbon / carbon composite material cylinder product. Adopting the processes, such as carbon cloth steak winding, pressurizing, solidifying and the like, the method has the advantages that the final density of the produced carbon / carbon composite material cylinder is larger than or equal to 1.25 g / cm<3>; the tensile strength of the plane surface is high; the size is basically unrestricted; no machine work is needed in the thickness direction; the performance-price ratio is superior; the cost of the carbon / carbon cylinder used for high temperature furnaces is remarkably reduced; the coherence of the processes is good; and the practicability is strong.

Description

technical field [0001] The invention belongs to the technical field of thermal field materials for high-temperature furnaces, and in particular relates to a method for preparing a carbon / carbon composite material cylinder for high-temperature furnaces. Background technique [0002] As an indispensable equipment in traditional industrial fields such as powder metallurgy, new materials and new energy fields, and national defense industry, high-temperature furnaces have been widely used. High-temperature furnaces require the thermal field materials to have both function and structure, and the thermal field materials are gradually shifting from graphite to carbon / carbon composite materials. In U.S. Patent US04275493A and Japanese Patents JP2000086382, JP03015521, and JP03015522, carbon cloth or carbon fiber winding technical solutions for cylindrical parts are mentioned, but large-scale cylindrical parts, especially large-scale carbon / carbon composite cylinders There is no rele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/84
Inventor 陈青华侯卫权肖志超苏君明
Owner XIAN CHAOMA SCI TECH
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