METHOD FOR THE PRODUCTION OF LIGNIN-CONTAINING PRECURSOR FIBRES AND ALSO CARBON FIBRES

Producing a lignin-containing precursor fiber for producing carbon fibers and/or activated carbon fibers, comprises (a) providing a solution comprising at least one kind of lignin and at least one fiber-forming polymer in at least one solvent, and (b) introducing the solution into a coagulation bath...

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Bibliographische Detailangaben
Hauptverfasser:	LEHMANN, Andre, FINK, Hans-Peter, Ebeling, Horst
Format:	Patent
Sprache:	eng ; hun
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPINNING TEXTILES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Producing a lignin-containing precursor fiber for producing carbon fibers and/or activated carbon fibers, comprises (a) providing a solution comprising at least one kind of lignin and at least one fiber-forming polymer in at least one solvent, and (b) introducing the solution into a coagulation bath by extruding through a spinneret, where the lignin precursor fiber precipitates. Independent claims are also included for: (1) the precursor fiber for producing carbon fibers comprising (in wt.%) at least one kind of lignin (10, 20-60), at least one kind of fiber-forming polymer (90, preferably 40-80), optionally a strength of at least 10 cN/tex, preferably at least 20 cN/tex, and/or optionally an modulus of elasticity of at least 1000 cN/tex, preferably at least 1300 cN/tex; (2) producing the carbon fiber, comprising stabilizing the precursor fiber at 100-400[deg] C, and carbonizing at greater than 800[deg] C under inert conditions; and (3) the carbon fiber produced by the above method.