Title:
CARBON NANOTUBE TWISTED YARN, AND PRODUCTION METHOD AND SPINNING SOURCE FOR CARBON NANOTUBE TWISTED YARN
Document Type and Number:
WIPO Patent Application WO/2015/083701
Kind Code:
A1
Abstract:
Provided is a CNT twisted yarn that has a breaking load index (F), as defined by formula (1), of 150 nN or more when in a state wherein CNT threads have simply been twisted. Also provided are a production method for the CNT twisted yarn and a spinning source that is suitable for the production of the CNT twisted yarn. (1) F = Tφ2/(φ/d)2, wherein T is the average tensile strength (in MPa) of the CNT twisted yarn and is the arithmetic mean of tensile strength values measured for three or more strands of the CNT twisted yarn that are produced under the same conditions, φ is the average diameter (in μm) of the CNT twisted yarn and is the arithmetic mean of the average diameters of the three or more strands of CNT twisted yarn measured for tensile strength or of three or more strands of CNT twisted yarn produced under the same conditions as the CNT twisted yarn measured for tensile strength, and d is the average diameter (in nm) of the CNT and is the arithmetic mean of the average diameters of the CNT that constitute the three or more strands of CNT twisted yarn measured for tensile strength or that constitute three or more strands of CNT twisted yarn produced under the same conditions as the CNT twisted yarn measured for tensile strength.
Inventors:
INOUE YOKU (JP)
NAKANISHI TAUTO (JP)
NAKANISHI TAUTO (JP)
Application Number:
PCT/JP2014/081869
Publication Date:
June 11, 2015
Filing Date:
December 02, 2014
Export Citation:
Assignee:
UNIV SHIZUOKA NAT UNIV CORP (JP)
JNC CORP (JP)
JNC CORP (JP)
International Classes:
C01B31/02; D02G3/26
Domestic Patent References:
| WO2007125923A1 | 2007-11-08 |
Foreign References:
| JP2010116632A | 2010-05-27 | |||
| JP2011207646A | 2011-10-20 | |||
| JP2011208296A | 2011-10-20 | |||
| JP2013174038A | 2013-09-05 | |||
| JP2013047402A | 2013-03-07 | |||
| JP2009196873A | 2009-09-03 |
Other References:
GHEMES, A. ET AL.: "Fabrication and mechanical properties of carbon nanotube yarns spun from ultra-long multi-walled carbon nanotube arrays", CARBON, vol. 50, 26 May 2012 (2012-05-26), pages 4579 - 4587, XP028403923, DOI: doi:10.1016/j.carbon.2012.05.043
INOUE, Y. ET AL.: "One-step grown aligned bulk carbon nanotubes by chloride mediated chemical vapor deposition", APPL. PHYS. LETT., vol. 92, 29 May 2008 (2008-05-29), pages 213113 - 1 -213113-3
INOUE, Y. ET AL.: "One-step grown aligned bulk carbon nanotubes by chloride mediated chemical vapor deposition", APPL. PHYS. LETT., vol. 92, 29 May 2008 (2008-05-29), pages 213113 - 1 -213113-3
Attorney, Agent or Firm:
OKUBO, KATSUYUKI (JP)
Katsuyuki Okubo (JP)
Katsuyuki Okubo (JP)
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