RANDOM MAT, FIBER-REINFORCED COMPOSITE MATERIAL MOLDED ARTICLE, AND CARBON FIBER MAT

RANDOM MAT, FIBER-REINFORCED COMPOSITE MATERIAL MOLDED ARTICLE, AND CARBON FIBER MAT

A random mat including carbon fibers and a thermoplastic resin, wherein a pressure applied when molding can be reduced and high mechanical strength is obtained when a shaped product of fiber reinforced composite material is formed, is provided. A random mat including carbon fibers having an average...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SONODA NAOAKI, HAGIHARA KATSUYUKI, OHKI TAKERU
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
BRAIDING
CHEMISTRY
COMPOSITIONS BASED THEREON
COTTON-WOOL
FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS
GENERAL PROCESSES OF COMPOUNDING
KNITTING
LACE-MAKING
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL
METALLURGY
NON-WOVEN FABRICS
ORGANIC MACROMOLECULAR COMPOUNDS
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRIMMINGS
WADDING
WORKING-UP
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Beschreibung
Zusammenfassung:A random mat including carbon fibers and a thermoplastic resin, wherein a pressure applied when molding can be reduced and high mechanical strength is obtained when a shaped product of fiber reinforced composite material is formed, is provided. A random mat including carbon fibers having an average fiber length of from 3 mm to 100 mm and a thermoplastic resin, wherein a fiber areal weight of the carbon fibers is from 25 to 10,000 g/m 2 , a proportion of carbon fiber bundles (A) constituted by single carbon filaments of a critical single fiber number or more defined by the formula (1) to the total amount of fibers in the random mat is from 40 to 99 Vol%, and an average number (N) of fibers in the carbon fiber bundles (A) satisfies the formula (2): Critical single fiber number = 600 / D 2.0 × 10 5 / D 2 ‰¤ N < 8.0 × 10 5 / D 2 wherein D is an average fiber diameter (µm) of carbon fibers.