A method and apparatus for extruding pitch based foam

Details A method and apparatus for extruding pitch based foam A method and apparatus for extruding pitch based foam

C - Chemistry, Metallurgy

04

B

C04B 38/00 (2006.01) C04B 35/52 (2006.01)

Patent

CA 2385056

A method and apparatus for extruding pitch based foam is disclosed. The method includes the steps of: forming a viscous pitch foam; passing the precursor through an extrusion tube; and subjecting the precursor in said extrusion tube to a temperature gradient which varies along the length of the extrusion tube to form an extruded carbon foam. The apparatus includes an extrusion tube having a passageway communicatively connected to a chamber in which a viscous pitch foam formed in the chamber passes through the extrusion tube, and a heating mechanism in thermal communication with the tube for heating the viscous pitch foam along the length of the tube in accordance with a predetermined temperature gradient.

Procédé et appareil pour l'extrusion de mousse à base de brai. Ledit procédé consiste à: former une mousse de brai visqueuse; passer le précurseur dans un tube d'extrusion; soumettre le précurseur dans ledit tube d'extrusion à un gradient de température qui varie sur la longueur dudit tube, de sorte qu'une mousse de carbone extrudée. Ledit appareil comporte un tube d'extrusion doté d'une voie de passage communiquant avec une chambre dans laquelle une mousse de brai visqueuse formée dans la chambre passe dans le tube d'extrusion, et un mécanisme de chauffage en communication thermique avec le tube de chauffage de la mousse de brai visqueuse, en fonction d'un gradient de température prédéterminée.

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