HIGH-ELASTIC MODULUS POLYBENZAZOLE FIBER AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To produce a polybenzazole fiber having a high strength and a high elastic modulus suitable as an industrial material. SOLUTION: This high-elastic modulus polybenzazole fiber has >=290 GPa elastic modulus and >=5.0 GPa strength without manifesting any of the equatorial st...

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Hauptverfasser:	KITAGAWA SUSUMU, ISHITOBI MICHIO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS MECHANICAL FINISHING OF YARNS OR ROPES NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES WARPING OR BEAMING YARNS YARNS OR THREADS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To produce a polybenzazole fiber having a high strength and a high elastic modulus suitable as an industrial material. SOLUTION: This high-elastic modulus polybenzazole fiber has >=290 GPa elastic modulus and >=5.0 GPa strength without manifesting any of the equatorial streak, two-point interference and four-point interference. The fiber is produced by heat-treating a polybenzazole fiber having