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Title:
CARBON FIBER PREPREG, METHOD FOR PRODUCING SAME AND CARBON FIBER REINFORCED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2012/081407
Kind Code:
A1
Abstract:
Provided is a carbon fiber prepreg comprising carbon fiber bundles containing numerous carbon fiber single yarns and a matrix resin impregnated in the carbon fiber bundles, the value of the coefficient of variation, displayed as a percentage, of the number of the carbon fiber single yarns contained per unit area being 10% or less, wherein in each unit area, the width and the depth from the surface of the carbon fiber prepreg in the cutting plane when the carbon fiber prepreg is cut at right angles to the array direction (direction of the fiber axis) of the carbon fiber bundles are 100 μm and 30 μm respectively. Also provided is a carbon fiber prepreg comprising carbon fiber bundles containing numerous carbon fiber single yarns and a matrix resin impregnated in the carbon fiber bundles, wherein a projected area of a carbon fiber single yarn which has a fiber orientation angle of 0°±3° or more is 2% or less of the projected area of all carbon fiber single yarns.

Inventors:
OZEKI YUKI
TAKAGISHI HIROYUKI
KOJITANI GO
Application Number:
PCT/JP2011/077750
Publication Date:
June 21, 2012
Filing Date:
December 01, 2011
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
OZEKI YUKI
TAKAGISHI HIROYUKI
KOJITANI GO
International Classes:
C08J5/24; B29B11/16; B29B15/12; D01F9/14; D06M15/55
Foreign References:
JP2005161797A2005-06-23
JPS61106634A1986-05-24
JPS609962A1985-01-19
JPH03146736A1991-06-21
JPS6183006A1986-04-26
US20090110872A12009-04-30
JP2009292977A2009-12-17
JP2009292976A2009-12-17
JP2004099814A2004-04-02
JP2002069754A2002-03-08
JP2000273224A2000-10-03
JP2000198112A2000-07-18
JP2000086784A2000-03-28
JPH0987359A1997-03-31
JPH0820708A1996-01-23
JPH0820654A1996-01-23
Other References:
See also references of EP 2653493A4
Download PDF:
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Claims:



 
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