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Title:
METHOD FOR PRODUCING FIBRILLATED CARBON FIBER SHEET
Document Type and Number:
WIPO Patent Application WO/2018/038033
Kind Code:
A1
Abstract:
A method for producing a fibrillated carbon fiber sheet 8 comprises a step for surface activation of unfibrillated carbon fiber tows on which a sizing agent has been applied, and a step for fibrillating said unfibrillated carbon fiber tows 3a and 3b to form a sheet. In the fibrillation step, at least one pair of fibrillating means configured from pressor shafts 4a-4d and 5a-5d that bend and pass the unfibrillated carbon fiber tows 3a and 3b through and fibrillating bars 6a-6c that oscillate in the tow width direction is preferable, and the height difference ΔH between the ends of the pressor shafts 4a-4d and 5a-5d and the ends of the fibrillating bars 6a-6c is preferably 5-30 mm. As a result, it is possible to obtain a fibrillated carbon fiber sheet in which single fibers are easily separated from each other, fibrillation is easy and defects do not occur easily even when an unfibrillated carbon fiber tow with applied sizing agent is used.

Inventors:
HORIMOTO WATARU
ITO MASAMICHI
Application Number:
PCT/JP2017/029724
Publication Date:
March 01, 2018
Filing Date:
August 21, 2017
Export Citation:
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Assignee:
KURASHIKI BOSEKI KK (JP)
International Classes:
D02J1/18; D06M10/00; D06M10/02; D06M11/34; D06M15/55; D06M101/40
Domestic Patent References:
WO2014142109A12014-09-18
Foreign References:
JP2009197143A2009-09-03
JPH038866A1991-01-16
JP2010111957A2010-05-20
Other References:
See also references of EP 3351666A4
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (JP)
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