发明授权
- 专利标题： Fine carbon fiber, method for producing the same and electrically conducting material comprising the fine carbon fiber
- 专利标题（中）： 细碳纤维，其制造方法和包含细碳纤维的导电材料
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申请号： US10254674申请日： 2002-09-26
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公开(公告)号： US06699582B2公开(公告)日： 2004-03-02
- 发明人: Toshio Morita , Hitoshi Inoue , Kunio Nishimura , Yutaka Suhara , Satoshi Ohshima , Motoo Yumura
- 申请人： Toshio Morita , Hitoshi Inoue , Kunio Nishimura , Yutaka Suhara , Satoshi Ohshima , Motoo Yumura
- 优先权： JPP2000-110675 20000412
- 主分类号： D01F600
- IPC分类号： D01F600
摘要：
A fine carbon fiber having an outer diameter of about 1 to about 80 nm and an aspect ratio of 10 to 30,000, comprising a hollow center portion and a multi-layer sheath structure of a plurality of carbon layers, the layers forming annual rings, wherein the sheath-forming carbon layers form an incomplete sheath, i.e., the carbon layers are partially broken or disrupted in a longitudinal direction, and the outer diameter of the carbon fiber and/or the diameter of the hollow center portion are not uniform in a longitudinal direction. The carbon fiber is obtained by instantaneously reacting a carrier gas at a high temperature and an organic compound gas kept at a temperature below the decomposition temperature of the transition metal compound and has a conductivity equivalent to that of a conventional vapor phase method and is useful as a filler material in resins, rubbers, paints and the like.