POLYFILAMENTARY CARBON FIBERS AND A FLASH SPINNING PROCESSOR PRODUCING THE FIBERS

• Main Authors: ADAMS, WILL, G, GONG, XIAOYI, CHAHAR, BHARAT, S, SHIN, HYUNKOOK
• Format: Patent
• Language: English; French
• Published: 03.01.2003
• Edition: 7
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SPINNING; TEXTILES; TRANSPORTING

A process for preparing the fibers, including: (a) providing a spinning mixture including a dispersion of a flashing agent and an excess of a carbonaceous pitch; and (b) passing the spinning mixture from a high pressure region through an orifice to a low pressure region to form polyfilamentary pitch fibers. The pitch fibers may optionally be further treated to form polyfilamentary carbon fibers or graphite fibers, which may be incorporated into a resin to form a lightweight, conductive composite. L'invention concerne un procédé de préparation de fibres, consistant à (a) engendrer un mélange de filage renfermant une dispersion d'un agent de placage et un excès d'une poix carbonée, et à (b) passer le mélange de filage à travers un orifice d'une zone de haute pression à une zone de basse pression pour former des fibres polyfilamentaires de la poix. Facultativement, on peut traiter les fibres de la poix pour former des fibres de carbone ou des fibres de graphite polyfilamentaires, qu'on peut incorporer dans une résine pour constituer un composite conducteur, léger.