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Preparation method of carbon-ceramic composite material based on unidirectional belt process

A carbon-ceramic composite material and unidirectional belt technology, applied in the field of composite material preparation, can solve the problems of low strength and difficult to strengthen design, and achieve the effect of reducing equipment requirements, ensuring product quality consistency, and reducing production cycle and cost.

Active Publication Date: 2018-11-27
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using short fibers for reinforcement, the strength of the material is lower than that of longer fibers, and it is difficult to design the material for specific direction reinforcement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The steps for preparing carbon-ceramic composite materials based on the unidirectional tape process are as follows:

[0024] Step 1. Configure resin slurry with high carbon residue rate, dissolve phenolic resin in ethanol solvent, and the weight ratio is 1:2;

[0025] Step 2. Pour the resin slurry into the rubber tank of the wet prepreg machine, prepare the unidirectional tape prepreg by using the wet prepreg equipment, and dry it at room temperature for 12 hours;

[0026] Step 3. Put the unidirectional tape prepreg obtained in step 2 into a mold to lay up layers, and use a press or autoclave for molding. The molding temperature is 180°C and the molding pressure is 5MPa to prepare a preform;

[0027] Step 4. Put the prefabricated body obtained in Step 3 into a high-temperature furnace for carbonization, the carbonization temperature is 1000° C., and the holding time is 1 hour to obtain a porous body;

[0028] Step 5. Put the obtained porous body in a graphite crucible ...

Embodiment 2

[0030] The steps for preparing carbon-ceramic composite materials based on the unidirectional tape process are as follows:

[0031] Step 1. Configure resin slurry, dissolve liquid phenolic resin in ethanol solvent, and the weight ratio is 1:1;

[0032] Step 2. Pour the slurry into the rubber tank of the wet prepreg machine, prepare the unidirectional tape prepreg by using the wet prepreg equipment, and dry it at room temperature for 12 hours;

[0033] Step 3. Put the unidirectional tape prepreg obtained in step 2 into a mold to lay up layers, and use a press to shape it. The molding temperature is 150°C and the molding pressure is 5MPa to prepare a prefabricated body;

[0034] Step 4. Put the prefabricated body obtained in Step 3 into a high-temperature furnace for carbonization. The carbonization temperature is between 1000° C. and the holding time is 1 hour to obtain a porous body;

[0035] Step 5. Put the obtained porous body in a graphite crucible, and infiltrate it with ...

Embodiment 3

[0037] The steps for preparing carbon-ceramic composite materials based on the unidirectional tape process are as follows:

[0038] Step 1. Configure resin slurry, dissolve phenolic resin in ethanol solvent, and the weight ratio is 1:2;

[0039] Step 2. Pour the slurry into the rubber tank of the wet prepreg machine, prepare the unidirectional tape prepreg by using the wet prepreg equipment, and dry it at room temperature for 12 hours;

[0040] Step 3. Lay the unidirectional tape obtained in step 2 on a cylindrical mold. The fiber direction in the layup is along the circular direction of the cylinder. After the layup is completed, prepare a vacuum bag and use a high-pressure autoclave for molding. The molding temperature is 150°C, the molding pressure is 3MPa, and a cylindrical preform is prepared;

[0041] Step 4. Put the cylindrical prefabricated body obtained in Step 3 into a high-temperature furnace for carbonization. The carbonization temperature is between 1000° C. and ...

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Abstract

The invention relates to a preparation method of a carbon-ceramic composite material based on a unidirectional belt process. The preparation method comprises the steps of compositing a carbon fiber asa reinforcement with slurry prepared from high-carbon residue resin, so as to prepare a carbon fiber unidirectional belt, spreading the unidirectional belt as a layer, carrying out mold pressing andhot-pressure tank formation so as to prepare a preform, and carrying out carbonization and infiltration, so as to prepare a carbon fiber enhanced ceramic-base composite material. The preparation method has the beneficial effects that an interface layer does not need to be prepared on the surface of the carbon fiber, the uniform distribution of the fiber in a matrix can be realized by virtue of a unidirectional belt process, the continuous production can be realized, and the performance degradation caused due to twists formed during the weaving of traditional fibers is avoided.

Description

technical field [0001] The invention relates to a method for preparing a carbon-ceramic composite material based on a unidirectional tape process, and belongs to the technical field of composite material preparation. Background technique [0002] Carbon fiber reinforced ceramic matrix composites, that is, carbon-ceramic composites, have a wide range of applications. In the military field, due to its high temperature resistance, good toughness, and excellent oxidation resistance, it is widely used in aero-engines, aerospace aircraft and rocket exhaust parts; in the civilian field, due to its good wear resistance and friction resistance And other properties are widely used in sealing rings, brake discs and other fields. [0003] Patent CN106565262A introduces a preparation method of carbon fiber reinforced ceramic matrix composite material. First, fibers are woven into a prefabricated body, and then slurry is injected into the prefabricated body, and carbon fiber reinforced c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/565
CPCC04B35/806C04B35/573C04B2235/5248
Inventor 杨金华齐哲焦健姜卓钰刘虎吕晓旭周怡然焦春荣
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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