skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Patent ·
OSTI ID:1374565
; ; ; ; ; ; ;

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 400.degree. C. and less than 2200.degree. C., wherein, in particular embodiments, the carbonization process includes a low temperature carbonization step conducted at a temperature of at least or above 400.degree. C. or 500.degree. C. and less than or up to 1000.degree. C., 1100.degree. C., or 1200.degree. C., followed by a high temperature carbonization step conducted at a temperature of at least or above 1200.degree. 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%.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-BATTELLE, LLC
Patent Number(s):
9,725,829
Application Number:
13/833,834
OSTI ID:
1374565
Resource Relation:
Patent File Date: 2013 Mar 15
Country of Publication:
United States
Language:
English

References (23)

Carbon fiber production patent April 1977
Manufacture of carbon fibres patent April 1980
Apparatus for production of graphite fibers patent March 1982
Carbon fiber manufacturing via plasma technology patent April 2002
Diagnostic monitor for carbon fiber processing patent April 2002
Thermally conductive polymer sheet patent November 2003
Apparatus and method for oxidation and stabilization of polymeric materials patent May 2009
Apparatus and method for stabilization or oxidation of polymeric materials patent January 2010
Apparatus and method for oxidation and stabilization of polymeric materials patent August 2010
System to continuously produce carbon fiber via microwave assisted plasma processing patent November 2010
Method for making carbon fabric and product thereof patent April 2011
Method for making carbon fabric and product thereof patent-application June 2005
Carbon nanotubes and method of manufacturing same, electron emission source, and display patent-application March 2006
Low electric conductivity high heat radiation polymeric composition and molded body patent-application October 2007
Oil Agent for Precursor Fiber of Carbon Fiber, Carbon Fiber and Production Method of the Carbon Fiber patent-application June 2008
Low electric conductivity high heat radiation polymeric composition and molded body patent-application October 2008
Hollow carbon fibres and process for their production patent-application May 2011
Stabilization of polyacrylonitrile precursor yarns patent-application June 2012
Processing and mechanical properties of a porous low carbon steel with a controlled porous structure by imposition of a static magnetic field journal February 2006
Strategies for Post-Synthesis Alignment and Immobilization of Carbon Nanotubes journal December 2010
Magnetization for lower temperature, selective diamond and carbon nanotube formation: A milestone in carbon physicochemical condensation journal March 2004
Application of a high magnetic field in the carbonization process to increase the strength of carbon fibers journal September 2002
Polycarbonate Crystallization by Vapor-Grown Carbon Fiber with and without Magnetic Field journal September 2003

Similar Records

Related Subjects

36 MATERIALS SCIENCE