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Rapid shaping method of carbon fiber preform

A carbon fiber prefabricated and fast technology, applied in the field of carbon fiber manufacturing, can solve the problems of large production costs and expensive graphite tooling, and achieve the effect of reducing high costs

Pending Publication Date: 2021-09-10
陕西金承烯新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole pre-deposition process takes 7-10 days. For the pre-deposition process of preforms with complex shapes, graphite tooling is needed for protection. Graphite tooling is expensive, and the pre-deposition process of carbon fiber reinforced high-temperature composite materials will inevitably produce large Cost of production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment is a rapid shaping method for a disc-shaped prefabricated body. The diameter of the disc body is 500 mm, the thickness of the disc body is 100 mm, and the number of each batch of chemical vapor deposition furnaces is 20. The specific process is:

[0020] Step 1, a resin impregnation, using a phenolic resin solution as an impregnating liquid, and performing resin impregnation on the prefabricated body by means of atomization and spraying.

[0021] In the phenolic resin solution, the mass percentage of the phenolic resin is 30% and the mass percentage of ethanol is 70%.

[0022] The impregnation method of atomization and spraying needs to be impregnated by means of spray equipment, and the impregnation process is carried out in a clean room. The impregnation process adopts a top-down spraying method, spraying the phenolic resin solution from the top of the preform, and spraying the preform in all directions after the resin solution flows slowly through the...

Embodiment 2

[0030] This embodiment is a rapid shaping method for an annular preform. The outer diameter of the annulus of the preform is 300 mm, the inner diameter of the annulus is 160 mm, the thickness of the preform is 40 mm, and the number of each batch of chemical vapor deposition furnaces is 50. The specific process is:

[0031] Step 1, a resin impregnation. The phenolic resin solution is used as the impregnating liquid, and the prefabricated body is impregnated with resin by means of atomization and spraying.

[0032] In the phenolic resin solution, the mass percentage of the phenolic resin is 30% and the mass percentage of ethanol is 70%.

[0033] The impregnation method of atomization and spraying needs to be impregnated by means of spray equipment, and the impregnation process is carried out in a clean room. The impregnation process adopts a top-down spraying method, spraying the phenolic resin solution from the top of the preform, and spraying the preform in all directions af...

Embodiment 3

[0041] This embodiment is a rapid shaping method for a tubular prefabricated body, with a pipe diameter of 600 mm, a pipe wall thickness of 30 mm, and a pipe height of 400 mm. The chemical vapor deposition furnace has 6 furnaces per batch.

[0042] The specific process is:

[0043] Step 1, a resin impregnation. The phenolic resin solution is used as the impregnating liquid, and the prefabricated body is impregnated with resin by means of atomization and spraying.

[0044] In the phenolic resin solution, the mass percent of phenolic resin is 30% and the mass percent of ethanol is 70%;

[0045] The impregnation method of atomization and spraying needs to be impregnated by means of spray equipment, and the impregnation process is carried out in a clean room. The impregnation process adopts a top-down spraying method, spraying the phenolic resin solution from the top of the preform, and spraying the preform in all directions after the resin solution flows slowly through the gap ...

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Abstract

In order to reduce the high cost generated in the shaping process of preparing a carbon fiber reinforced high-temperature composite material by adopting a chemical vapor deposition process, the invention provides a rapid shaping method of a carbon fiber preform. The method comprises the steps of S1, impregnating the carbon fiber preform in a resin impregnation liquid for the first time; S2, carrying out air-drying shaping on the resin-impregnated carbon fiber preform for the first time; S3, carrying out second-time impregnation on the carbon fiber preform subjected to the first-time shaping in the resin liquid; and S4, carrying out secondary air-drying shaping on the carbon fiber preform subjected to secondary impregnation.

Description

technical field [0001] The invention relates to the field of carbon fiber manufacturing, in particular to a rapid shaping method for a carbon fiber prefabricated body. Background technique [0002] Carbon fiber reinforced high temperature composite materials include C / C composite materials, carbon / ceramic composite materials, etc. The preparation process of such materials includes: chemical vapor deposition process, compression molding process, precursor impregnation cracking process, reaction melt infiltration process, etc. Among them, the chemical vapor deposition process and the molding process can be used as the shaping process of this type of material: the prefabricated body of the carbon fiber reinforced high-temperature composite material prepared by the chemical vapor deposition process is mostly a carbon fiber braid, and the high-temperature composite material prepared by this process is due to its superiority. The high-temperature mechanical properties are mostly u...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/628C04B35/634
CPCC04B35/83C04B35/62886C04B35/63476C04B2235/616
Inventor 雷哲锋
Owner 陕西金承烯新材料科技有限公司
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