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

Abstract

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%.

Inventors:

Naskar, Amit K.; Ozcan, Soydan; Eberle, Claude C.; Abdallah, Mohamed Gabr; Mackiewicz, Ludtka Gail; Ludtka, Gerard Michael; Paulauskas, Felix Leonard; Rivard, John Daniel Kennedy

Issue Date:

Tue Aug 08 00:00:00 EDT 2017

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1374565

Patent Number(s):

9725829

Application Number:

13/833,834

Assignee:

UT-BATTELLE, LLC

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C48/05 - Filamentary, e.g. strands

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B32/05 - Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
C01B32/16 - Preparation
C01B32/164 - involving continuous processes
C01B32/318 - characterised by the starting materials

D - TEXTILES D01 - NATURAL OR MAN-MADE THREADS OR FIBRES D01F - CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS

D01F9/12 - Carbon filaments
D01F9/127 - by thermal decomposition of hydrocarbon gases or vapours {or other carbon-containing compounds in the form of gas or vapour, e.g. carbon monoxide, alcohols}
D01F9/14 - by decomposition of organic filaments
D01F9/145 - from pitch or distillation residues
D01F9/225 - {from stabilised polyacrylonitriles}

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Mar 15

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE