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Title: Magneto-carbonization method for production of carbon fiber, and high performance carbon fibers made thereby

Method for the preparation of carbon fiber from fiber precursor, wherein the fiber precursor is subjected to a magnetic field of at least 3 Tesla during a carbonization process. The carbonization process is generally conducted at a temperature of at least C. and less than C., wherein, in particular embodiments, the carbonization process includes a low temperature carbonization step conducted at a temperature of at least or above C. or C. and less than or up to C., C., or C., followed by a high temperature carbonization step conducted at a temperature of at least or above C. In particular embodiments, particularly in the case of a polyacrylonitrile (PAN) fiber precursor, the resulting carbon fiber may possess a minimum tensile strength of at least 600 ksi, a tensile modulus of at least 30 Msi, and an ultimate elongation of at least 1.5%.
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Resource Relation:
Patent File Date: 2013 Mar 15
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

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journal, September 2002

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