炭素繊維の製造方法 - Mitsubishi Rayon Co., Ltd.

Title:

炭素繊維の製造方法

Document Type and Number:

Japanese Patent JP5787035

Kind Code:

B2

Abstract:

Provided is a carbon fiber manufacturing method with which high quality carbon fibers can be obtained. The carbon fiber manufacturing method satisfies all of (1)-(3) below. (1) The method comprises a step of introducing carbon fiber precursor fiber bundles that have been spread in sheet form into a flameproofing furnace, flameproofing the carbon fiber precursor fiber bundles introduced into the flameproofing furnace in a temperature range of 200°C to 300°C, introducing the flameproofed fiber bundles obtained from the flameproofing treatment into a carbonization furnace, and carbonizing the flameproofed fiber bundles introduced into the carbonization furnace in a temperature range of 300°C to 2500°C. (2) The flameproofing furnace has a heat-treatment chamber and a sealing chamber adjacent thereto and discharges air from the sealing chamber to the outside of the flameproofing furnace. (3) The space velocity (SV) (1/h) of the hot air blown from the heat-treatment chamber into the sealing chamber satisfies the following relationship: 80 ¤ SV ¤ 400.

Inventors:

Akito Hatayama
Naoki Sugiura
Masahiro Hata

Application Number:

JP2014517309A

Publication Date:

September 30, 2015

Filing Date:

March 26, 2014

Export Citation:

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