PRODUCTION OF MESO-PHASE PITCH-BASED CARBON FIBER

PURPOSE:To obtain the subject carbon fiber having improved tensile strength in high efficiency by melt-spinning a carbonaceous meso-phase pitch, infusibilizing the spun fiber in a specific oxidizing atmosphere at a specific temperature and subjecting the product to carbonization treatment or graphit...

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Bibliographic Details
Main Authors SANAO YASUNORI, FURUYAMA MASATOSHI, TOMIOKA NORIO, HAMADA TAKESHI
Format Patent
LanguageEnglish
Published 10.01.1990
Subjects
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
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Summary:PURPOSE:To obtain the subject carbon fiber having improved tensile strength in high efficiency by melt-spinning a carbonaceous meso-phase pitch, infusibilizing the spun fiber in a specific oxidizing atmosphere at a specific temperature and subjecting the product to carbonization treatment or graphitization treatment. CONSTITUTION:A pitch fiber is produced by the melt-spinning of a carbonaceous meso-phase pitch such as coal tar pitch or petroleum pitch. The pitch fiber is infusibilized by heating at 100-400 deg.C in an oxidizing atmosphere containing 0.1-40vol.% of nitrogen dioxide and 4-40vol.% of water. The infusibilized fiber is carbonized or graphitized at 1000-2000 deg.C in an atmosphere of an inert gas such as nitrogen or argon to obtain the objective carbon fiber.
Bibliography:Application Number: JP19880127107