发明授权
- 专利标题: Method for the production of porous carbon sheet
- 专利标题(中): 生产多孔碳片的方法
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申请号: US557996申请日: 1975-03-13
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公开(公告)号: US3991169A公开(公告)日: 1976-11-09
- 发明人: Hiromitsu Makita , Jun Yamada , Yoshio Kawai
- 申请人: Hiromitsu Makita , Jun Yamada , Yoshio Kawai
- 申请人地址: JA Nihonbashi
- 专利权人: Kureha Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人: Kureha Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人地址: JA Nihonbashi
- 优先权: JA49-28861 19740313
- 主分类号: B01D39/20
- IPC分类号: B01D39/20 ; C01B31/00 ; C04B35/52 ; D01F9/14 ; D01F9/145 ; D21H13/50 ; H01M4/66 ; H01M4/96 ; C01B31/02
摘要:
A porous carbon sheet having excellent physical properties is obtained by dispersing oxidized pitch fibers in a liquid containing at least one wetting agent having at least one hydroxyl group and a boiling point of not less than 150.degree. C, subsequently shaping the resultant dispersion in the form of a sheet, heating the sheet thus obtained at temperatures in the range of from 50 to 300.degree. C and thereafter, carbonizing the sheet in a nonoxidizing atmosphere. The oxidized pitch fibers contain 45 - 90% by weight of nitrobenzene insolubles and 55 - 90% by weight of fixed carbon and will not flow through a nozzle of 1 mm in diameter under a load of 10 Kg/cm.sup.2 at temperatures of not more than 300.degree. C. The pitch fiber has a diameter in the range of 5 to 100 .mu. and a fiber length/fiber diameter ratio of not less than 2.
公开/授权文献
- US5586642A Conveyor systems 公开/授权日:1996-12-24