Carbon Fiber Bundle, Method for Producing The Same, and Molded Article Made Thereof
AssigneeTeijin Limited
InventorsKaori Nagakura, Takeshi Naita, Masaru Sato, Toru Kaneko, Katsuyuki Hagihara, Takashi Ito, Jirou Sadanobu
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Abstract
A carbon fiber bundle includes carbon fibers and a copolymerized polyolefin attached to the surface of the carbon fibers. The copolymerized polyolefin contains an aromatic vinyl compound and an acid and/or acid anhydride as copolymerization components. The amount of the copolymerized polyolefin attached is 0.01 to 10 parts by mass per 100 parts by mass of the carbon fiber bundle. The carbon fiber bundle may be used or contained in a random mat, a composite material, and various molded articles.
Claims20
A carbon fiber bundle comprising carbon fibers and a copolymerized polyolefin attached to a surface of the carbon fibers, the copolymerized polyolefin containing an aromatic vinyl compound and at least one of acid and acid anhydride as copolymerization components,
- the copolymerized polyolefin being obtainable by a graft copolymerization of at least one member selected from the group consisting of propylene-aromatic vinyl compound copolymers and propylene-α-olefin-aromatic vinyl compound copolymers with at least one member selected from the group consisting of unsaturated dicarboxylic acids and acid anhydrides thereof,
- a copolymerization ratio between the olefin and the aromatic vinyl compound in the copolymerized polyolefin being such that a molar ratio of the aromatic vinyl compound is 0.1 to 5 per 100 of the olefin,
- an amount of the copolymerized polyolefin attached being 0.01 to 10 parts by mass per 100 parts by mass of the carbon fiber bundle.
Dependencies are inferred from the claim text.