POLYBENZAZOLE FIBERS WITH ULTRA-HIGH PHYSICAL PROPERTIES AND METHOD FOR MAKING THEM

• Main Authors: BUBECK, ROBERT, A, SERRANO, MYRNA, CHAU, CHIEHUN, NOLAN, STEPHEN, J, ROSENBERG, STEVEN, NEWSHAM, MARK, D
• Format: Patent
• Language: English; French
• Published: 09.06.1994
• Edition: 5
• Subjects: 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; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP

A process for making PBZ fibers of ultra-high physical properties is given. Polybenzoxazole fibers made by the process of this invention have tensile strengths nearly double in value from what has been reported previously. L'invention se rapporte à un procédé pour fabriquer des fibres de polybenzazole ayant des propriétés physiques extrêmement élevées. Les fibres de PBZ fabriquées par ce procédé possèdent des résistances à la rupture par traction qui sont à peu près le double en valeur de ce qui est connu à ce jour.