Title:
CARBON FIBER BUNDLE, MANUFACTURING METHOD THEREFOR, PREPEG, AND CARBON-FIBER-REINFORCED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/203088
Kind Code:
A1
Abstract:
[Solution] A carbon fiber bundle in which the relationship between a crystallite size Lc (nm), a single fiber compressive strength Fc (GPa) measured by a single fiber composite compression fragmentation method, and an initial elastic modulus E0 (GPa) in resin-impregnated strand tensile testing simultaneously satisfies formulae (1) to (3), and Lc is at most 4.00 nm: (1) Fc ≥ 1.3 × 10 / Lc - 0.3; (2) E0 ≤ 80 × Lc + 155; and (3) E0 ≥ 330. The present invention provides: a carbon fiber bundle having an excellent tensile elastic modulus and compressive strength in a carbon-fiber-reinforced composite material; and a manufacturing method therefor.
Inventors:
OKUDA HARUKI (JP)
MATSUMOTO NAOHIRO (JP)
SADO YUKI (JP)
TANAKA FUMIHIKO (JP)
MATSUMOTO NAOHIRO (JP)
SADO YUKI (JP)
TANAKA FUMIHIKO (JP)
Application Number:
PCT/JP2019/015620
Publication Date:
October 24, 2019
Filing Date:
April 10, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D01F9/22; C08J5/24
Domestic Patent References:
| WO2017204026A1 | 2017-11-30 |
Foreign References:
| JP2002054031A | 2002-02-19 | |||
| JP2015010290A | 2015-01-19 | |||
| JP2014159665A | 2014-09-04 | |||
| JP2015067910A | 2015-04-13 | |||
| JPH03180514A | 1991-08-06 | |||
| JP2014141761A | 2014-08-07 | |||
| JP2014159665A | 2014-09-04 | |||
| JP2008308776A | 2008-12-25 | |||
| JP2015010290A | 2015-01-19 |
Other References:
See also references of EP 3783136A4
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