VERFAHREN ZUR HERSTELLUNG VON ANISOTROPEN KOHLENSTOFFASERN

The method for producing anisotropic carbon fibres from carbon-containing isotropic pitch comprises the following steps: a) an isotropic pitch of a size smaller than 0.1mm is released from unmeltable components at a temperature comprised between 150C and 350C, b) the pitch purified with a mononuclea...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ROMEY,INGO,.DR, HEIN,MICHAEL,.DR
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES FUELS INKS LUBRICANTS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL OR ARTIFICIAL THREADS OR FIBRES NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PEAT PETROLEUM, GAS OR COKE INDUSTRIES POLISHES PYROLIGNEOUS ACID SPINNING TECHNICAL GASES CONTAINING CARBON MONOXIDE TEXTILES USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The method for producing anisotropic carbon fibres from carbon-containing isotropic pitch comprises the following steps: a) an isotropic pitch of a size smaller than 0.1mm is released from unmeltable components at a temperature comprised between 150C and 350C, b) the pitch purified with a mononuclear organic solvent amount equal to 4-6 parts by weight of solvent for one part by weight of pitch filtrate is extracted at a temperature comprised between 70 and 90C, c) the extraction residue is dried before its transformation into mesophase pitch, it is heat-treated during a period from 1 to 5 hours at a temperature comprised between 340C and 410C, and the mesophase pitch obtained is woven into fibres, d) the extraction residue is mixed before its heat treatment with 1-15% by weight of purified solvent extract by suction into a water jet. A mixture is obtained wherein the toluene soluble part is 20-40% by weight of the mixture.