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Gelcasting polymeric precursors for producing net-shaped graphites

Patent ·
OSTI ID:874931

The present invention discloses a method for molding complex and intricately shaped high density monolithic carbon, carbon-carbon, graphite, and thermoplastic composites using gelcasting technology. The method comprising a polymeric carbon precursor, a solvent, a dispersant, an anti-foaming agent, a monomer system, and an initiator system. The components are combined to form a suspension which is poured into a mold and heat-treated to form a thermoplastic part. The thermoplastic part can then be further densified and heat-treated to produce a high density carbon or graphite composite. The present invention also discloses the products derived from this method.

Research Organization:
LOCKHEED MARTIN ENERGY RES COR
DOE Contract Number:
AC05-96OR22464
Assignee:
UT-Battelle, Inc. (Oak Ridge, TN)
Patent Number(s):
US 6491891
OSTI ID:
874931
Country of Publication:
United States
Language:
English

References (7)

Gelcasting of silicon compositions for SRBSN report December 1995
Forming Single-Phase Laminates via the Gelcasting Technique journal November 1997
Gelcasting of Alumina journal March 1991
Theoretical and Practical Aspects of Liquid-Phase Pyrolysis as Basis of the Carbon Matrix of CFRC book January 1990
The Influence of shaping method on the grain size dependence of strength in dense submicrometre alumina journal January 1996
Gelcast Tooling: Net Shape Casting and Green Machining journal May 1998
Carbon-Carbon Matrix Materials book January 1993