Carbon fiber reinforced carbon-silicon carbide-zirconium carbide composite material and preparation method thereof

A composite material and carbon fiber technology, which is applied in the field of carbon fiber-reinforced carbon-silicon carbide-zirconium carbide composite materials and its preparation, can solve the problem of uneven distribution of metal and carbon matrix, inability to fully react metal and carbon matrix, and affecting ceramic matrix composites Material anti-oxidation, ablation resistance and other issues to achieve the effect of avoiding the accumulation of metal powder, improving the ablation resistance and reducing the preparation cost

Active Publication Date: 2020-05-05
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Description
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  • Application Information

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Problems solved by technology

At present, the RMI process generally uses liquid molten metal to infiltrate C/C porous bodies to obtain ceramic matrix composites. The liquid metal reacts with C to form a ceramic matrix. Due to the uneven distribution of the metal and carbon matrix, th

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  • Carbon fiber reinforced carbon-silicon carbide-zirconium carbide composite material and preparation method thereof

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Example Embodiment

[0028] The present invention provides, in a first aspect, a method for preparing a carbon fiber reinforced carbon-silicon carbide-zirconium carbide composite material, the method comprising the following steps:

[0029] (1) Depositing a pyrolytic carbon matrix on the surface of the carbon fiber contained in the carbon fiber preform to obtain a modified carbon fiber preform (low-density C / C green body); PyC matrix (pyrolytic carbon matrix) is prepared inside the pure mesh needle-punched preform or carbon fiber carbon felt, so that the surface of the carbon fiber contained in the carbon fiber preform is deposited with a pyrolytic carbon matrix, and the density is 0.8~1.2g / cm 3 The low density C / C body.

[0030] (2) The silicon powder, zirconium powder, graphite powder, phenolic resin and organic solvent are prepared into a mixed resin solution; the mass ratio of silicon powder, zirconium powder, graphite powder and phenolic resin in the mixed resin solution is (1-3) : (4 to 6):...

Example Embodiment

[0056] Example 1

[0057] A preparation method of C / C-SiC-ZrC composite material, the specific steps are:

[0058] ①Put the carbon fiber pure mesh needle-punched preform into the CVI-C furnace, deposit it for 400 hours, and then process it at a high temperature of 1700 °C to obtain a low-density C / C green body.

[0059] 2. Use Si powder, Zr powder, graphite powder and aminophenol resin with a diameter not greater than 100nm to mix and dilute with alcohol organic solvent to obtain a mixed resin solution; Si powder, Zr powder, graphite powder and ammonia in the mixed resin solution The mass ratio of phenolic resin is 1:6:5:100.

[0060] ③ The low-density C / C green body obtained in step ① is vacuum-impregnated by using the mixed resin with the mass ratio of silicon powder, zirconium powder, graphite powder and aminophenolic resin prepared in step ② as 1:6:5:100 as the impregnating agent, Then, the impregnated low-density C / C green body was subjected to pressure curing reaction an...

Example Embodiment

[0063] Example 2

[0064] A preparation method of C / C-SiC-ZrC composite material, the specific steps are:

[0065] ①Put the carbon fiber pure mesh needle-punched preform into the CVI-C furnace, deposit it for 400 hours, and then process it at a high temperature of 1700 °C to obtain a low-density C / C green body.

[0066] 2. Use Si powder, Zr powder, graphite powder and aminophenol resin with a diameter not greater than 100nm to mix and dilute with alcohol organic solvent to obtain a mixed resin solution; Si powder, Zr powder, graphite powder and ammonia in the mixed resin solution The mass ratio of phenolic resin is 3:6:5:100.

[0067] ③ The low-density C / C green body obtained in step ① is vacuum-impregnated by using the mixed resin with the mass ratio of silicon powder, zirconium powder, graphite powder and aminophenol formaldehyde resin prepared in step ② as 3:6:5:100 as the impregnating agent, Then, the impregnated low-density C / C green body was subjected to pressure curin...

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Abstract

The invention relates to a carbon fiber reinforced carbon-silicon carbide-zirconium carbide composite material and a preparation method thereof. The method comprises the following steps: (1) depositing a pyrolytic carbon matrix on the surface of carbon fibers contained in a carbon fiber preform to obtain a modified carbon fiber preform; (2) preparing a mixed resin solution of silicon powder, zirconium powder, graphite powder and phenolic resin in a mass ratio of (1-3): (4-6): 5: 100; (3) impregnating the modified carbon fiber preform with the mixed resin solution, and then sequentially carrying out curing and carbonization reactions on the impregnated modified carbon fiber preform, wherein the carbonization reaction is carried out in an inert atmosphere, the temperature of the carbonization reaction is 1650-1750 DEG C, and the time is 0.5-2 hours; and (4) repeating the step (3) at least once to obtain the composite material. According to the invention, silicon carbide and zirconium carbide can be uniformly distributed in the composite material, the content of free metals is reduced, and the oxidation resistance and ablation resistance of the material are improved.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a carbon fiber reinforced carbon-silicon carbide-zirconium carbide composite material and a preparation method thereof. Background technique [0002] Carbon fiber reinforced ceramic matrix composites have the characteristics of anti-oxidation, light weight, thermal shock resistance, and excellent high-temperature performance, so they are widely used in aviation, aerospace, and automotive fields. For example, carbon fiber reinforced carbon-ceramic (C / C-SiC) composite material is a new type of high-performance thermal structural material with high specific strength, high specific modulus, corrosion resistance, thermal shock resistance and other excellent properties. The technical field has very great application potential. However, with the complexity of the service environment, higher requirements are put forward for the material system, and the...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/622
CPCC04B35/622C04B35/83C04B2235/3826C04B2235/3839C04B2235/404C04B2235/422C04B2235/428C04B2235/48C04B2235/5248C04B2235/5256C04B2235/5454C04B2235/77C04B2235/96
Inventor 王鹏于新民吴朝军杨良伟霍鹏飞刘俊鹏左红军
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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