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Preparation method and application of carbon/ceramic composite material

A carbon-ceramic composite material and composite material technology, applied in the field of preparation of carbon-ceramic composite materials, can solve the problems of carbon-ceramic brake discs such as poor controllability, uneven composition distribution, poor thermal shock resistance, etc., to achieve composition and The effect of controllable content, uniform distribution of silicon carbide and stable friction coefficient

Active Publication Date: 2016-05-11
HUNAN BOWANG CARBON CERAMIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Powder metallurgy brake materials have the following disadvantages: easy bonding at high temperature, heavy weight, obvious thermal recession, low temperature strength, poor thermal shock resistance, short life, etc.
CN102128225B discloses a method for preparing carbon-ceramic brake discs by reaction fusion siliconizing. The controllability of carbon-ceramic brake discs prepared by this method is not strong, and the distribution of components is uneven. , large amount of wear, unstable curve, large tail warp, severe vibration, affecting other parts of the aircraft braking system

Method used

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  • Preparation method and application of carbon/ceramic composite material
  • Preparation method and application of carbon/ceramic composite material
  • Preparation method and application of carbon/ceramic composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Carbon pottery aircraft brake disk will be prepared in the embodiment of the present invention 1, and its used raw material is that density is 1.2-1.5g / cm 3 C / C composite materials. The density is 1.2-1.5g / cm 3 The preparation method of the C / C composite material is:

[0054] The density is 0.5-0.55g / cm 3 2.5D needle-punched carbon fiber full-mesh tire, carbon deposited to a density of 1.3g / cm 3 , under a protective atmosphere, a high temperature treatment of 2300 ° C is carried out. After processing according to the net size of the aircraft brake disc, it is about 1.26g / cm 3 Density C / C composite aircraft brake disc body. When carbon deposition is performed, propylene or natural gas is used as the carbon source, and argon is used as the dilution gas. During deposition, the pressure in the furnace is controlled at 2.0-3.0KPa and the temperature is 900-1000°C; The volume ratio is 1:5-1:1.

[0055] step one

[0056] Configure mass ratio, styrene:polymethylsilane a...

Embodiment 2

[0088] Carbon pottery aircraft brake disk will be prepared in the embodiment 2 of the present invention, and its used raw material is that density is 1.2-1.5g / cm 3 C / C composite materials. The density is 1.2-1.5g / cm 3 The preparation method of the C / C composite material is:

[0089] The density is 0.5-0.55g / cm 3 2.5D needle-punched carbon fiber full-mesh tire, carbon deposited to a density of 1.55g / cm 3 , under a protective atmosphere, a high temperature treatment of 2300 ° C is carried out. After processing according to the net size of the aircraft brake disc, it is about 1.5g / cm 3 Density C / C composite aircraft brake disc body. For carbon deposition, propylene or natural gas is used as the carbon source, and argon is used as the dilution gas. During the deposition, the pressure in the furnace is controlled at 2.0-3.0KPa and the temperature is 900-1000°C; The volume ratio is 1:5-1:1.

[0090] step one

[0091] Configure mass ratio, styrene:polymethylsilane as 15:100 i...

Embodiment 3

[0104] Will prepare carbon pottery aircraft brake disc in embodiment 3, and its used raw material is that density is 1.2-1.5g / cm 3 C / C composite materials. The density is 1.2-1.5g / cm 3 The preparation method of the C / C composite material is:

[0105] The density is 0.5-0.55g / cm 3 2.5D needle-punched carbon fiber full-mesh tire, carbon deposited to a density of 1.4g / cm 3 , under a protective atmosphere, a high temperature treatment of 2300 ° C is carried out. After processing according to the net size of the aircraft brake disc, it is about 1.37g / cm 3 Density C / C composite aircraft brake disc body. When carbon deposition is performed, propylene or natural gas is used as the carbon source, and argon is used as the dilution gas. During deposition, the pressure in the furnace is controlled at 2.0-3.0KPa and the temperature is 900-1000°C; The volume ratio is 1:5-1:1.

[0106] step one

[0107] Configure the impregnation solution with a mass ratio of styrene:polymethylsilane...

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Abstract

The invention relates to a preparation method and application of a carbon / ceramic composite material, in particular to a preparation method and application of a carbon / ceramic composite material needed for braking a high-momentum delivery system. The preparation method includes: using a C / C composite material of 1.2-1.5 g / cm3 in density as a raw material; disposing the raw material in impregnation liquid I for impregnation, pyrolyzing in a protective atmosphere after impregnation, repeating impregnating-pyrolyzing operations until a carbon / ceramic composite material of 1.85-1.9 g / cm3 in density is obtained; treating the carbon / ceramic composite material obtained at high temperature until density of the carbon / ceramic composite material is lowered to 1.82-1.88 g / cm3 to obtain a pre-finished product; disposing the pre-finished product in impregnation liquid II, decomposing in a protective atmosphere after impregnation is completed, polishing after decomposing, and repeating impregnating-decomposing-polishing operations until a carbon / ceramic composite material finished product of 1.93-2.0 g / cm3 is obtained.

Description

technical field [0001] The invention relates to a preparation method and application of a carbon-ceramic composite material, in particular to a preparation method and application of a carbon-ceramic composite material required for braking of a high-momentum carrying system. Background technique [0002] At present, there are mainly two types of brake discs used in aircraft: C / C materials and powder metallurgy materials. Powder metallurgy brake materials have the following disadvantages: easy bonding at high temperature, heavy weight, obvious thermal recession, low temperature strength, poor thermal shock resistance, and short life. The C / C composite material brake disc was first developed in the 1970s. It has the characteristics of light weight, high load capacity, high temperature resistance and long service life under high temperature conditions. However, it is easy to oxidize and absorb moisture. , low wet friction coefficient, small static friction coefficient and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/84C04B35/622F16D65/12
CPCC04B35/83C04B41/009C04B41/5059C04B41/87C04B2235/608C04B2235/77F16D65/12F16D65/125F16D2200/0047C04B41/4554C04B41/4535
Inventor 陈灵涛邓华峰薛珊燕陈庆伟
Owner HUNAN BOWANG CARBON CERAMIC CO LTD
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