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AssigneeMistubishi Chemical Corporation
InventorsMasao Tomioka, Takahiro Hayashi, Saki Fujita, Takeshi Ishikawa, Keigo Yoshida, Takuya Teranishi, Atsushi Takahashi, Kenichi Watanabe, Morio Katagiri, Akinobu Sasaki, Masahiro Oosuka, Hiroshi Tategaki, Takayuki Kobayashi
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Provided are a carbon fiber thermoplastic resin prepreg which is a carbon fiber prepreg obtained by impregnating a PAN-based carbon fiber in which the average fiber fineness of a single fiber is 1.0 dtex to 2.4 dtex with a thermoplastic resin, wherein the thermoplastic resin satisfies 20≤(FM/FS)≤40 (where FM: flexural modulus (MPa) of a resin sheet comprising only the thermoplastic resin, and FS: flexural strength (MPa) of the resin sheet), a method for manufacturing the same, and a carbon fiber composite material employing the carbon fiber prepreg.
A carbon fiber thermoplastic resin prepreg formed by impregnating a carbon fiber bundle formed from plural carbon fibers having an average single fiber fineness of 1.0 dtex to 2.4 dtex, with a thermoplastic resin composition, wherein a weight per area of the carbon fiber thermoplastic resin prepreg is 75 g/m2 or more, and a single fiber of the carbon fiber that constitutes the carbon fiber bundle has plural surface asperity structures extending over 2 μm or more in the fiber longitudinal direction, and the difference of elevation between the peak and the bottom (Rp−v) in a region having a circumferential length of the single fiber of 2000 nm×a length in the fiber axial direction of 2000 nm is in the range of 60 nm to 200 nm.
A method for producing a carbon fiber thermoplastic resin prepreg, the method comprising a step of impregnating a PAN-based carbon fiber bundle having an average single fiber fineness of from 1.0 dtex to 2.4 dtex, with a thermoplastic resin composition, and thereby obtaining a carbon fiber prepreg,
Dependencies are inferred from the claim text.