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A kind of high thermal conductivity ceramic matrix composite material and preparation method thereof

A technology of high thermal conductivity ceramics and composite materials, applied in the field of composite materials, can solve the problem of graphene being difficult to disperse, and achieve the effects of excellent anti-oxidation performance, easy industrial implementation, and simple process

Active Publication Date: 2021-10-29
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the above-mentioned technologies all prepare graphene-polymer composites or graphene-silicon carbide composites with high thermal conductivity, and there have been no reports of graphene / carbon fiber toughened silicon carbide-zirconium carbide ceramic matrix composites with high thermal conductivity.
The reason may be that graphene is not easy to disperse in the above multi-component raw materials

Method used

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  • A kind of high thermal conductivity ceramic matrix composite material and preparation method thereof

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Effect test

Embodiment 1

[0043] A preparation method of high thermal conductivity graphene / carbon fiber toughened silicon carbide-zirconium carbide ceramic matrix composite material, the specific steps are:

[0044] 1) The needle-punched carbon fiber reinforcement was treated at a high temperature of 1800 °C for 2 hours, and then deposited in a vapor deposition furnace for 100 hours, 120 hours, and 80 hours, respectively, so that the density of the fiber reinforcement reached 1.02 g / cm 3 ;

[0045] 2) Use a zirconium-silicon integrated resin solution containing graphene oxide to vacuum impregnate the above reinforcement at a pressure of 100Pa for 1 hour, then impregnate at a pressure of 3MPa for 3 hours, and finally pressurize to 10MPa and heat up to 100°C Keep warm for 2 hours at low temperature, 2 hours at 200°C, and 2 hours at 300°C, so that the zirconium-silicon integrated resin is fully cross-linked and cured;

[0046] 3) Place the cured carbon fiber reinforcement in a pyrolysis furnace, and pyr...

Embodiment 2

[0054] A preparation method of high thermal conductivity graphene / carbon fiber toughened silicon carbide-zirconium carbide ceramic matrix composite material, the specific steps are:

[0055] 1) The stitched carbon fiber reinforcement was treated at a high temperature of 1800 °C for 2 hours, and then deposited in a vapor deposition furnace for 100 hours, 100 hours, and 80 hours, respectively, so that the density of the fiber reinforcement reached 1.15 g / cm 3 ;

[0056] 2) Use a zirconium-silicon integrated resin solution containing graphene oxide to vacuum impregnate the above reinforcement at a pressure of 100Pa for 1 hour, then impregnate at a pressure of 3MPa for 3 hours, and finally pressurize to 10MPa and heat up to 100°C Keep warm for 2 hours at low temperature, 2 hours at 200°C, and 2 hours at 300°C, so that the zirconium-silicon integrated resin is fully cross-linked and cured;

[0057] 3) Place the cured carbon fiber reinforcement in a pyrolysis furnace, and pyrolyze ...

Embodiment 3

[0065] A preparation method of high thermal conductivity graphene / carbon fiber toughened silicon carbide-zirconium carbide ceramic matrix composite material, the specific steps are:

[0066] 1) The finely woven and punctured carbon fiber reinforcement was treated at a high temperature of 1800 °C for 2 hours, and then deposited in a vapor deposition furnace for 80 hours, 100 hours, and 80 hours respectively, so that the density of the fiber reinforcement reached 1.16 g / cm 3 ;

[0067] 2) Use a zirconium-silicon integrated resin solution containing graphene oxide to vacuum impregnate the above reinforcement at a pressure of 100Pa for 1 hour, then impregnate at a pressure of 3MPa for 3 hours, and finally pressurize to 10MPa and heat up to 100°C Keep warm for 2 hours at low temperature, 2 hours at 200°C, and 2 hours at 300°C, so that the zirconium-silicon integrated resin is fully cross-linked and cured;

[0068] 3) Place the cured carbon fiber reinforcement in a pyrolysis furnac...

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Abstract

The present invention proposes a high thermal conductivity ceramic matrix composite material and a preparation method thereof. The composite material uses a carbon fiber prefabricated body as a skeleton, and the prefabricated body is impregnated in a zirconium-silicon integrated resin solution containing graphene oxide and cured, Cracked in the system. The ceramic matrix composite material provided by the invention contains graphene, and the graphene is uniformly dispersed in two kinds of matrices of silicon carbide and zirconium carbide. The composite material not only has excellent oxidation resistance, but also has excellent thermal conductivity, and can be used in an oxidizing environment above 2500°C, and its thermal conductivity exceeds 22W / m·K.

Description

technical field [0001] The invention relates to a high thermal conductivity ceramic matrix composite material and a preparation method thereof, in particular to a graphene / carbon fiber toughened silicon carbide-zirconium carbide ceramic matrix composite material and a preparation method thereof, belonging to the technical field of composite materials. Background technique [0002] Carbon fiber toughened silicon carbide ceramic matrix composites (C f / SiC) is one of the most studied and most deeply studied ceramic matrix composites. It overcomes the Achilles' heel of brittleness of single-phase ceramic materials, and has excellent characteristics such as low density, high temperature resistance, high strength, oxidation resistance and ablation resistance. It is the most promising application in harsh environments such as aerospace structural materials and brake materials. The material has been applied in the wing rudder of hypersonic aircraft. However, according to long-ter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/52C04B35/56C04B35/571
CPCC04B35/522C04B35/571C04B35/5622C04B2235/5248C04B2235/522C04B2235/6581C04B2235/77C04B2235/96
Inventor 裴雨辰刘伟
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH