PROCESSES FOR PREPARING CARBON FIBERS USING SULFUR TRIOXIDE IN A HALOGENATED SOLVENT

Disclosed here are processes for preparing carbonized polymers (preferably carbon fibers), comprising sulfonating a polymer with a sulfonating agent that comprises SO3 dissolved in a solvent to form a sulfonated polymer; treating the sulfonated polymer with a heated solvent, wherein the temperature...

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Bibliographische Detailangaben
Hauptverfasser:	PATTON, JASSON T, RHOTON, CHRISTINA A, LYSENKO, ZENON, BARTON, BRYAN E, CHEN, XIAOYUN, HUKKANEN, ERIC J, BERNIUS, MARK T
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Beschreibung
Zusammenfassung:	Disclosed here are processes for preparing carbonized polymers (preferably carbon fibers), comprising sulfonating a polymer with a sulfonating agent that comprises SO3 dissolved in a solvent to form a sulfonated polymer; treating the sulfonated polymer with a heated solvent, wherein the temperature of the solvent is at least 95 °C; and carbonizing the resulting product by heating it to a temperature of 500-3000 °C. Carbon fibers made according to these methods are also disclosed herein. L'invention concerne des procédés de préparation de polymères carbonisés (de préférence des fibres de carbone), comprenant une sulfonation d'un polymère par un agent de sulfonation qui comprend SO3 dissous dans un solvant pour former un polymère sulfoné ; un traitement du polymère sulfoné par un solvant chauffé, la température du solvant étant au moins 95°C ; et une carbonisation du produit résultant par chauffage de celui-ci à une température de 500-3 000°C. L'invention concerne également des fibres de carbone obtenues conformément à ces procédés.