Title:
MOLDING MATERIAL AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2021/095597
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a resin composition which offers high formability of a member with complicated geometry by injection molding and with which it is possible to obtain a molded article that exhibits excellent bending elastic modulus and impact characteristics. A molding material comprising carbon fibers and a resin composition containing a thermoplastic resin, wherein: the lengths of the carbon fibers is substantially identical with the length of the molding material; the carbon fibers have a twisting angle of 2.0-30.5° at the surface thereof; a cross-sectional surface of the molding material perpendicular to the axial direction of the carbon fibers has a core ratio A/(A+B) of 0.1-0.5, where A represents the area ratio of a core portion including the carbon fibers, while B represents the area ratio of a sheath portion other than the core portion; and the area ratio of voids accounts for 5% or less in a cross-sectional surface of the molding material perpendicular to the axial direction of the carbon fibers.
Inventors:
OKUDA HARUKI (JP)
WATANABE JUN (JP)
TANAKA FUMIHIKO (JP)
WATANABE JUN (JP)
TANAKA FUMIHIKO (JP)
Application Number:
PCT/JP2020/041171
Publication Date:
May 20, 2021
Filing Date:
November 04, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08K7/06; C08L101/00; D01F9/22
Domestic Patent References:
| WO2019172247A1 | 2019-09-12 |
Foreign References:
| JPS5962114A | 1984-04-09 | |||
| JP2012057277A | 2012-03-22 | |||
| JP2010150358A | 2010-07-08 | |||
| JPH06320536A | 1994-11-22 | |||
| JP2000309060A | 2000-11-07 | |||
| JPH05169445A | 1993-07-09 | |||
| JP2017190426A | 2017-10-19 | |||
| JP2018059087A | 2018-04-12 |
Other References:
KOBE STEEL ENGINEERING REPORTS, vol. 67, no. 2, 2018
See also references of EP 4059995A4
See also references of EP 4059995A4
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