HEAT-TREATED FLAME-RESISTANT FIBER, HEAT-TREATED FLAME-RESISTANT FIBER SHEET AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING GRAPHITE FIBER AND GRAPHITE FIBER SHEET

To provide heat-treated flame-resistant fiber, that is a precursor of graphite fiber, that can produce graphite fiber with high molecular chain rigidity and high crystallinity even when graphitized at low temperatures.SOLUTION: Heat-treated flame-resistant fiber to be manufactured satisfies a follow...

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Hauptverfasser:	YAMANO MASATO, SUZUKI YOSHINOBU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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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Zusammenfassung:	To provide heat-treated flame-resistant fiber, that is a precursor of graphite fiber, that can produce graphite fiber with high molecular chain rigidity and high crystallinity even when graphitized at low temperatures.SOLUTION: Heat-treated flame-resistant fiber to be manufactured satisfies a following formula (1) (x-1.3)×(y-65.7)-1.5>0 by heat-treating flame-resistant fiber under predetermined conditions (however, in the formula (1), x is density of the heat-treated flame-resistant fiber (g/cm3), and y is a crystal orientation degree Π002 (%) of the heat-treated flame-resistant fiber).SELECTED DRAWING: None 【課題】分子鎖の剛直性が高く、低温で黒鉛化しても結晶性の高い黒鉛繊維を製造できる黒鉛繊維の前駆体たる熱処理耐炎繊維を提供する。【解決手段】耐炎繊維に対して所定条件で熱処理を行うことにより、下記数式（１）（ｘ－１．３）×（ｙ－６５．７）－１．５＞０・・・数式（１）（但し、数式（１）中、ｘは熱処理耐炎繊維の密度（ｇ／ｃｍ３）、ｙは熱処理耐炎繊維の結晶配向度Π００２（％）である）を満たす熱処理耐炎繊維を製造する。【選択図】なし