Method for producing carbon fiber

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United States of America Patent

PATENT NO 12006595
APP PUB NO 20230082504A1
SERIAL NO

17895949

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Abstract

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The present invention relates to a method for producing a carbon fiber. In the method for producing the carbon fiber, a high pure acrylonitrile monomer with specific contents of impurities and a comonomer are used to produce an acrylonitrile copolymer, and the acrylonitrile copolymer is subjected to a spinning operation, a stretching operation, an oxidation treatment and a carbonization treatment in sequence, for obtaining the carbon fiber. The acrylonitrile copolymer with an appropriate falling-ball viscosity and an appropriate weight-average molecular weight is beneficial to the spinning operation, thereby reducing an inner pore diameter and enhancing strength of the resulted carbon fiber.

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Patent Owner(s)

Patent OwnerAddress
FORMOSA PLASTICS CORPORATIONKAOHSIUNG CITY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Ching-Wen Kaohsiung, TW 93 1168
Chou, Wen-Ju Kaohsiung, TW 3 0
Hung, Chia-Chi Kaohsiung, TW 6 0
Hwang, Long-Tyan Kaohsiung, TW 18 1
Tsai, Kun-Yeh Kaohsiung, TW 3 0

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