Process for manufacturing carbon/carbon composite material with needling structure

A carbon composite material and manufacturing process technology, applied in the field of carbon/carbon composite material manufacturing process, can solve the problems of low carbon fiber strength, large shrinkage, troublesome size change, etc., and achieve the effect of improving material strength

Active Publication Date: 2009-12-23
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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Problems solved by technology

As the raw material of prefabricated parts, pre-oxidized wire can greatly reduce the cost of raw materials. Although pre-oxidized wire is cheaper, carbon fiber is mainly used as the main raw material to manufacture carbon/carbon composite materials at present, because pre-oxidized wire shrinks in the carbonization process. Large, the size chang

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  • Process for manufacturing carbon/carbon composite material with needling structure
  • Process for manufacturing carbon/carbon composite material with needling structure

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[0017] Aiming at the problem of the difficulty of controlling the size and strength of the pre-oxygenated wire material, the present invention invented a pre-oxygenated wire fiber felt mixed with chopped carbon fiber felt in a certain proportion, wherein the pre-oxygenated wire felt accounts for 80% of the weight percentage, and the carbon fiber The felt occupies 20% of the weight percentage. The preform is formed by needle punching, and the preform is carbonized under the new carbonization process system to achieve the control of the material size and the improvement of the material strength. The advantage of this manufacturing process is that through the fine control of the carbonization process, the relationship between the shrinkage rate and the carbonization process parameters after the pre-oxidized silk felt and the carbon fiber felt are mixed in a certain ratio, and the content of the carbon fiber felt is controlled. To make it play a certain restrictive effect on the shrin...

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Abstract

The invention belongs to a process for manufacturing a carbon/carbon composite material, and particularly relates to a process for manufacturing a carbon/carbon composite material with a needling structure. The invention aims to provide a process for manufacturing a carbon/carbon composite material with a needling structure, which can adopt a pre-oxidized fiber as a raw material of a prefabricated member and has controllable size and large stretching strength. The process has the advantages that a relation between the contraction coefficient of a pre-oxidized fiber felt and a carbonization process parameter is mastered through fine control of a carbonization process after the pre-oxidized fiber felt and a carbon fiber felt are mixed according to a certain proportion, and the carbon fiber felt plays a certain limitation role of contraction in the carbonization process of the pre-oxidized fiber through content control of the carbon fiber felt, namely equivalently providing a carbonization traction force to the pre-oxidized fiber so as to play a role in improving the strength of the material.

Description

technical field [0001] The invention belongs to a carbon / carbon composite material manufacturing process, in particular to a needle-punched structure carbon / carbon composite material manufacturing process. Background technique [0002] Carbon / carbon composites are mainly composed of prefabricated reinforced skeleton and matrix carbon. The shape of carbon / carbon products is made of chopped fibers, continuous fibers or a mixture of the two in a certain proportion in the form of weaving or molding, as a reinforced skeleton of carbon / carbon composite materials, and this reinforced skeleton is called a prefabricated part. The raw materials and structures of prefabricated parts are different, resulting in great differences in material properties. As the raw material of prefabricated parts, pre-oxidized wire can greatly reduce the cost of raw materials. Although pre-oxidized wire is cheaper, carbon fiber is mainly used as the main raw material to manufacture carbon / carbon composit...

Claims

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Application Information

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IPC IPC(8): C04B35/83C01B31/02
Inventor 许正辉赵高文房学良杨晓光
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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