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A fast and efficient way to obtain silicon carbide whiskers on the surface of carbon fiber reinforced composite materials and its preparation method

A technology for reinforced composite materials and silicon carbide whiskers, which is applied in the field of quickly and efficiently obtaining silicon carbide whiskers on the surface of carbon fiber reinforced composite materials and its preparation. It can solve the problems of difficulty in generating SiC whiskers and high equipment requirements, and achieve low equipment requirements. , uniform whiskers and high efficiency

Active Publication Date: 2022-05-31
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The temperature of this method needs to be higher than the melting point of silicon, which requires high equipment, and this method can basically only generate SiC whiskers on one surface, so it is difficult to generate SiC whiskers on all surfaces of composite materials.

Method used

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  • A fast and efficient way to obtain silicon carbide whiskers on the surface of carbon fiber reinforced composite materials and its preparation method
  • A fast and efficient way to obtain silicon carbide whiskers on the surface of carbon fiber reinforced composite materials and its preparation method

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Embodiment Construction

[0036] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting

[0037] Unless otherwise specifically stated, the relative arrangement of components and steps set forth in these embodiments, numerical tables

[0041] 1. Select the carbon fiber reinforced composite material as the matrix, and the size is 10mm × 10mm × 10mm. the substrate surface

[0044] 4. The carbon felt is taken out, and after the alcohol volatilization is complete, it is dried at 100°C for 2 hours in a drying oven. After 600 in a tube furnace

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Abstract

The present invention provides a method for quickly and efficiently obtaining silicon carbide whiskers on the surface of carbon fiber reinforced composite materials and a preparation method thereof. Pretreatment is performed, and the carbon fiber reinforced composite material block is placed in the interlayer of the pretreated carbon felt at a lower temperature, and the obtained product grows on each surface of the carbon fiber reinforced composite material after temperature treatment. The invention has the advantages of low cost, low equipment requirements, simple process flow and the like, can rapidly and efficiently prepare a large number of SiC whiskers on the surface of the carbon fiber reinforced composite material, has high growth efficiency of the whiskers, and uniform distribution of the generated whiskers.

Description

A fast and efficient method to obtain silicon carbide whiskers on the surface of carbon fiber reinforced composites and its preparation method technical field The present invention relates to a kind of fast and efficient obtaining silicon carbide whisker on the surface of carbon fiber reinforced composite material and preparation thereof method. Background technique At present, carbon fiber reinforced carbon-based (C / C) and silicon carbide-based (C / SiC) composite materials have low density, specific strength It has the advantages of high specific modulus and high temperature resistance, and is widely used in the aerospace field, becoming the mainstay of lightweight structures and exothermic structures. material. However, carbon-based materials are easily oxidized in an aerobic environment above 400 °C, which will cause carbon fibers or Oxidation loss of carbon matrix will greatly damage the mechanical properties of composite materials and affect the safety of comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/87
CPCC04B41/87C04B41/009C04B41/5059C04B35/806C04B41/4596C04B41/4556
Inventor 李佳艳郝建洁施伟
Owner DALIAN UNIV OF TECH