Title:
A METHOD AND APPARATUS FOR EXTRUDING PITCH BASED FOAM
Document Type and Number:
WIPO Patent Application WO2001021551
Kind Code:
A9
Abstract:
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.
Inventors:
KLETT JAMES W
Application Number:
PCT/US2000/040964
Publication Date:
August 01, 2002
Filing Date:
September 20, 2000
Export Citation:
Assignee:
UT BATTELLE LLC (US)
International Classes:
C08J9/00; B28B3/20; C04B35/52; C04B38/00; (IPC1-7): C04B38/00; C04B35/52
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