METHOD FOR MAKING CARBON FIBRE PREFORMS

The invention concerns a method for making a carbon fibre preform which consists in using at least one yarn or cable formed of continuous fibres derived from carbon precursor fibres previously subjected to an intermediate carbonization such that the fibres have a carbon ratio between 70 % and 90 % a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DUVAL, RENAUD, MARJOLLET, THIERRY, LHERM, ERIC
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS ARTIFICIAL STONE BLASTING BRAIDING BRAKES CEMENTS CERAMICS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY CLUTCHES COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE COTTON-WOOL COUPLINGS FOR TRANSMITTING ROTATION CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS ENGINEERING ELEMENTS AND UNITS FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS,ROPES OR THE LIKE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING KNITTING LACE-MAKING LIGHTING LIME, MAGNESIA LOOMS MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MECHANICAL ENGINEERING MECHANICAL FINISHING OF YARNS OR ROPES METALLURGY METHODS OF WEAVING NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS REFRACTORIES SLAG SPINNING TEXTILES THERMAL INSULATION IN GENERAL TREATMENT OF NATURAL STONE TRIMMINGS WADDING WARPING OR BEAMING WEAPONS WEAVING WOVEN FABRICS YARNS YARNS OR THREADS
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Beschreibung
Zusammenfassung:	The invention concerns a method for making a carbon fibre preform which consists in using at least one yarn or cable formed of continuous fibres derived from carbon precursor fibres previously subjected to an intermediate carbonization such that the fibres have a carbon ratio between 70 % and 90 % and having a tensile failure resistance not less than 3000 MPa's after they have been entirely carbonized without necessarily having been tensioned, and in using the slightly twisted yarn or cable for making the preform, before subjecting it to a thermal treatment to complete the transformation of the continuous fibres into carbon fibres. The yarn or cable can be subjected to a drawing-cracking process to obtain a yarn or cable formed of discontinuous fibres whereof the cohesion is ensured by slight twisting, or by taping.