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Preparation method for fiber reinforced carbon-silicon carbide-zirconium carbide-based composite material

A fiber-reinforced, zirconium carbide-based technology is applied in the field of preparation of fiber-reinforced multiphase ceramic matrix composite materials, which can solve the problems of unfavorable industrialized production, high cost, long preparation period, etc., and achieves improved oxidation resistance and ablation resistance. , Conducive to industrialized production, the effect of shortening the preparation cycle

Inactive Publication Date: 2013-09-11
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These techniques not only have a long preparation cycle and high cost, but are not conducive to industrial production.

Method used

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  • Preparation method for fiber reinforced carbon-silicon carbide-zirconium carbide-based composite material

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Experimental program
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Effect test

Embodiment 1

[0024] In this embodiment, the mass ratio of ZrC nano powder to phenolic resin is 0.02:1, and the selected two-dimensional carbon fiber cloth is two-dimensional T300 carbon fiber cloth. Its implementation method is carried out according to the following steps:

[0025] 1. Weigh 2 grams of ZrC nano powder (purity 99.0%, average particle size 50nm) on an analytical balance with an accuracy of 0.1 mg, weigh 80 grams of absolute ethanol on an ordinary balance, mix the two, stir evenly, and place Oscillation in the ultrasonic tank makes the ZrC nanometer powder dispersed evenly.

[0026] 2. After crushing the solid phenolic resin (properly crushing large pieces of resin), weigh 100 grams of resin and add it to the dispersion liquid prepared in step 1, place the mixed liquid in a 50°C oven and heat until the resin is completely dissolved, then Ultrasonic vibration is used to uniformly disperse the ZrC nanometer powder to form a slurry.

[0027] 3. After fully impregnating about 25...

Embodiment 2

[0031] The difference between this example and Example 1 is that the mass ratio of ZrC nano-powder to phenolic resin is 0.05:1 (ZrC nano-powder 5 grams), and the others are the same as Example 1.

Embodiment 3

[0033] The difference between this example and Example 1 is that the mass ratio of ZrC nano-powder to phenolic resin is 0.08:1 (ZrC nano-powder 8 grams), and the others are the same as Example 1.

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Abstract

The invention discloses a preparation method for a fiber reinforced carbon-silicon carbide-zirconium carbide-based (C / C-SiC-ZrC) composite material. The preparation method comprises the following steps of: (a) evenly dispersing ZrC nanopowder in absolute ethyl alcohol; (b) mixing phenolic resin and ZrC dispersion liquid to form slurry; (c) immersing a two-dimensional carbon fiber sheet into the slurry for dipping and drying, then carrying out continuous superposition paving on the two-dimensional carbon fiber sheet, and carrying out curing and post-curing treatment to prepare a fiber-reinforced sintered body; (d) cracking the fiber-reinforced sintered body to obtain a porous C / C prefabricate; (e) placing silicon powder into a graphite crucible, burying the porous C / C prefabricate into the silicon powder, heating to 1,500-1,650 DEG C, and preserving heat for preset time so as to carry out liquid silicon permeation. The method can be used for improving the high-temperature oxidizing property and ablation property of the carbon fiber reinforced ceramic (C / C-SiC) composite material.

Description

technical field [0001] The invention relates to the preparation technology of fiber-reinforced multi-phase ceramic matrix composite material, in particular to the technology of modifying the matrix of composite material by using insoluble metal carbide. Background technique [0002] Carbon fiber reinforced carbon-ceramic (C / C-SiC) composite material is a new type of high-performance thermal structural material, which has excellent properties such as high specific strength, high specific modulus, corrosion resistance, and thermal shock resistance. It is used in high-tech fields such as aerospace It has great application potential. However, with the complexity of the service environment, higher requirements are put forward for the material system, and the material system is required to have stronger designability. It is difficult for C / C-SiC composite materials to meet the performance requirements of oxidation resistance and ablation resistance above 1600 °C. In order to fur...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/565C04B35/56C04B35/622
Inventor 沙建军代吉祥张兆甫张玉翠
Owner DALIAN UNIV OF TECH
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