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公开(公告)号：EP2203244B1
公开(公告)日：2011-02-09
申请号：EP08804282.5
申请日：2008-09-17
申请人： Toho Tenax Co., Ltd.
CPC分类号： B01D71/021 , B01D67/0067 , B01D69/08 , B01D69/081 , B01D2323/42 , B01D2325/40 , D01D5/24 , D01F9/225 , Y10T428/2918
摘要： The invention relates to a method for producing hollow carbon fibres (7) by treating a stabilized carbon fibre precursor (1) in an application device with high-frequency electromagnetic waves, wherein the application device comprises means for feeding the electromagnetic waves into a coupling-out region and a hollow outer conductor opening into the coupling-out region (9). For the treatment, a field of the high-frequency electromagnetic waves is generated (5) and a field strength in the range from 15 to 40 kV/m is set in the coupling-out region of the application device. The stabilized carbon fibre precursor is continuously led through the hollow outer conductor as an inner conductor (2), whereby a coaxial conductor comprising the outer conductor (3) and the inner conductor is formed. An inert gas atmosphere is produced in the coaxial conductor and in the adjoining coupling-out region by the passage of an inert gas. The hollow carbon fibres obtained have a continuous lumen, extending in the longitudinal axis of the fibre, and an inside diameter in the range between 5 and 20 µm and a wall thickness in the range between 1.5 and 7 µm.
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公开(公告)号：EP2203244A1
公开(公告)日：2010-07-07
申请号：EP08804282.5
申请日：2008-09-17
申请人： Toho Tenax Co., Ltd.
CPC分类号： B01D71/021 , B01D67/0067 , B01D69/08 , B01D69/081 , B01D2323/42 , B01D2325/40 , D01D5/24 , D01F9/225 , Y10T428/2918
摘要： The invention relates to a method for producing hollow carbon fibres (7) by treating a stabilized carbon fibre precursor (1) in an application device with high-frequency electromagnetic waves, wherein the application device comprises means for feeding the electromagnetic waves into a coupling-out region and a hollow outer conductor opening into the coupling-out region (9). For the treatment, a field of the high-frequency electromagnetic waves is generated (5) and a field strength in the range from 15 to 40 kV/m is set in the coupling-out region of the application device. The stabilized carbon fibre precursor is continuously led through the hollow outer conductor as an inner conductor (2), whereby a coaxial conductor comprising the outer conductor (3) and the inner conductor is formed. An inert gas atmosphere is produced in the coaxial conductor and in the adjoining coupling-out region by the passage of an inert gas. The hollow carbon fibres obtained have a continuous lumen, extending in the longitudinal axis of the fibre, and an inside diameter in the range between 5 and 20 µm and a wall thickness in the range between 1.5 and 7 µm.
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