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Title:
MULTILAYER BODY, METHOD FOR PRODUCING SAME AND PREPREG
Document Type and Number:
WIPO Patent Application WO/2022/154041
Kind Code:
A1
Abstract:
A multilayer body according to the present invention comprises fibers, a matrix resin and a flame retardant filler. With respect to a cross-section of this multilayer body at an angle of 45° to the fiber direction, if the area occupied by the flame retardant filler in the entire cross-section at 45° is taken as 100%, the area occupied by the flame retardant filler in a range from one outermost surface of the multilayer body to the depth of 400 μm is 70% or more; and if A is the area of the flame retardant filler and B is the area of the matrix resin in the range from the outermost surface of the cross-section at 45° to the depth of 400 μm, the relational expression 0.01 < A/B < 0.15 is satisfied. A prepreg according to the present invention comprises fibers, a matrix resin and a flame retardant filler. With respect to a cross-section of this prepreg at an angle of 45° to the fiber direction, the uneven distribution rate of the flame retardant filler is 66% or more, and if A is the area of the flame retardant filler and B is the area of the matrix resin in the cross-section, the relational expression 0.01 < A/B < 0.15 is satisfied.

Inventors:
SADO YUKI (JP)
SAKATA HIROAKI (JP)
Application Number:
PCT/JP2022/000869
Publication Date:
July 21, 2022
Filing Date:
January 13, 2022
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B29B11/16; B32B5/28; B32B7/02; B32B27/12; B32B27/18; C08J5/10; D06M11/69; B29K105/06
Domestic Patent References:
WO2005082982A12005-09-09
WO2012133096A12012-10-04
WO2012039456A12012-03-29
Foreign References:
JP2008214547A2008-09-18
JPH11105196A1999-04-20
JP2007016121A2007-01-25
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