Title:
CARBON FIBER SIZING AGENT, AQUEOUS DISPERSION THEREOF, CARBON FIBER BUNDLE HAVING ADSORBED SIZING AGENT, SHEET-SHAPED ARTICLE, AND CARBON FIBER REINFORCED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2013/027708
Kind Code:
A1
Abstract:
The present invention provides: a carbon fiber sizing agent that can obtain a carbon fiber bundle having a superior effect of improving mechanical properties when composited using a resin; an aqueous dispersion thereof; a carbon fiber bundle; a sheet-shaped article having a carbon fiber bundle; and a composite material. The carbon fiber sizing agent contains: a compound (A) that is an ester of an unsaturated monobasic acid and an epoxy compound having a plurality of epoxy groups in the molecule, and that has at least one epoxy group in the molecule; a urethane acrylate oligomer (B) that is bifunctional and that has a tensile elongation rate of the cured product of at least 40%; and a polyurethane resin (C) having a tensile elongation rate of a dried coating film of 350-900% inclusive. The amounts of A-C contained satisfy the conditions described in the description. The aqueous dispersion disperses the sizing agent. The carbon fiber bundle contains 0.6-3.0 mass% inclusive of the sizing agent. The sheet-shaped article and a pultruded composite material contain the carbon fiber bundle. The composite material contains the sheet-shaped article.
Inventors:
WAKABAYASHI KOUKI (JP)
SUGIURA NAOKI (JP)
HATA MASAHIRO (JP)
TAKEDA SHIGEKAZU (JP)
YOSHIDA KEIGO (JP)
NAKAMURA SHUUICHI (JP)
SUGIURA NAOKI (JP)
HATA MASAHIRO (JP)
TAKEDA SHIGEKAZU (JP)
YOSHIDA KEIGO (JP)
NAKAMURA SHUUICHI (JP)
Application Number:
PCT/JP2012/071018
Publication Date:
February 28, 2013
Filing Date:
August 21, 2012
Export Citation:
Assignee:
MITSUBISHI RAYON CO (JP)
WAKABAYASHI KOUKI (JP)
SUGIURA NAOKI (JP)
HATA MASAHIRO (JP)
TAKEDA SHIGEKAZU (JP)
YOSHIDA KEIGO (JP)
NAKAMURA SHUUICHI (JP)
WAKABAYASHI KOUKI (JP)
SUGIURA NAOKI (JP)
HATA MASAHIRO (JP)
TAKEDA SHIGEKAZU (JP)
YOSHIDA KEIGO (JP)
NAKAMURA SHUUICHI (JP)
International Classes:
D06M15/55; C08L63/00; C08L67/02; C08L75/04; D06M15/564; D06M101/40
Domestic Patent References:
WO2011092962A1 | 2011-08-04 |
Foreign References:
JP2005320641A | 2005-11-17 | |||
JP2002506414A | 2002-02-26 | |||
JPH09250087A | 1997-09-22 | |||
JPH0441779A | 1992-02-12 | |||
JPS5715229B2 | 1982-03-29 | |||
JPS5352796A | 1978-05-13 | |||
JPH07197381A | 1995-08-01 | |||
JP2008095241A | 2008-04-24 | |||
JP2007231441A | 2007-09-13 | |||
JP2007131959A | 2007-05-31 |
Other References:
See also references of EP 2749690A4
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
Akio Miyazaki (JP)
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Claims: