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A preparation method of carbon-ceramic composite material based on unidirectional tape 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: 2021-07-09
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 is a preparation method of carbon-ceramic composite material based on unidirectional tape technology. In the method, carbon fiber is used as a reinforcement, and a carbon fiber unidirectional tape is prepared by compounding with a slurry prepared from a high carbon residue resin, and the unidirectional tape is laminated. , through molding or autoclave molding to make a prefabricated body, and then prepare carbon fiber reinforced ceramic matrix composites through carbonization and infiltration. This method does not require the preparation of an interface layer on the carbon fiber surface, and the uniform distribution of fibers in the matrix can be achieved by using the unidirectional tape process, which can realize continuous production and avoid performance attenuation caused by twists and turns formed by traditional fiber weaving.

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 Patents(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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