CARBON-FIBER-PRECURSOR FIBER BUNDLE, CARBON FIBER BUNDLE, AND USES THEREOF

Provided are: a carbon fiber bundle which has a large value of single-fiber fineness and excellent productivity and which, despite this, contains few interlaced single fibers therein and has excellent spreadability; and precursor fibers which are suitable for use in producing the carbon fiber bundle...

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Bibliographische Detailangaben
Hauptverfasser:	SHINMEN YUUSUKE, MATSUDA HARUMI, NII TAKESHI, AOYAMA NAOKI, IRIE YOSHIKO, NAKAO HIROYUKI, ICHINO MASAHIRO, FUJII YASUYUKI, MORI SHOUHEI, KANEKO MANABU, MIURA TEPPEI, TERANISHI TAKUYA, NUMATA KIHARU, KOBAYASHI TAKAYUKI, MATSUYAMA NAOMASA, KOGAME AKIYOSHI, KIRIYAMA TAKAYUKI, TAKEDA SHIGEKAZU, WATANABE KENICHI, HIROTA NORIFUMI, NAKAJIMA ATSUSHI, ITOU TOSHIYUKI, HATA MASAHIRO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Provided are: a carbon fiber bundle which has a large value of single-fiber fineness and excellent productivity and which, despite this, contains few interlaced single fibers therein and has excellent spreadability; and precursor fibers which are suitable for use in producing the carbon fiber bundle. The precursor fibers are a carbon-fiber-precursor acrylic fiber bundle which comprises a polyacrylonitrile copolymer comprising 95-99 mol% acrylonitrile units and 1-5 mol% hydroxyalkyl (meth)acrylate units and which has a single-fiber fineness of 1.5-5.0 dtex. In the acrylic fiber bundle, the cross-section of each single fiber which is perpendicular to the fiber axis has a shape that has a roundness of 0.9 or less. The roundness is a value determined using equation (1) where S and L are the cross-sectional area and the circumferential length, respectively, of a single fiber which are obtained by examining, with an SEM, the cross-section of the single fiber which is perpendicular to the fiber axis and analyzing the obtained image. Roundness = 4pS/L 2 (1)