Repairing method of carbon fiber surface defect

A carbon fiber and defect technology, which is applied in the field of surface cavity processing, can solve the problems of poor performance and the decline of carbon fiber mechanical performance indicators, etc.
CN1461829AInactive Publication Date: 2003-12-17้™ˆๆ–ฐ่ฐ‹
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
้™ˆๆ–ฐ่ฐ‹
Publication Date
2003-12-17
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A process for reparing the surface defects on the surface of carbon fibre by gas-phase deposition method includes such steps as preparing an acetylene reaction environment, putting the defective carbon fibres in it, heating by focused electromagnetic field to crack the acetylene into H2 and carbon atoms, and depositing the carbon atoms on the surface of carbon fibres.
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Description

technical field

[0001] The invention belongs to the improvement and supplement of the carbon fiber processing technology, especially the method for processing the surface cavity formed in the existing carbon fiber production technology. Background technique

[0002] Carbon fiber (or graphite fiber) is processed and produced in the process of production, especially the carbon fiber processed and produced with polyacrylonitrile precursor as raw material. Due to the defects of the original filament itself and the uniformity of the processing process, the surface holes are formed. These holes cause the stress concentration phenomenon when the fiber is stressed, and are also the main factor for the breakage of the single filament. The recovery of these surface holes has always been a matter of great concern in the field of carbon fiber production, but there is no good method so far, so at present, only the monofilament with existing holes can be sacrificed, resulting in a signifi...

Claims

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