The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2017
Filed:
Mar. 15, 2013
Ut-battelle, Llc, Oak Ridge, TN (US);
Amit K. Naskar, Knoxville, TN (US);
Soydan Ozcan, Oak Ridge, TN (US);
Claude C. Eberle, Knoxville, TN (US);
Mohamed Gabr Abdallah, Salt Lake City, UT (US);
Gail Mackiewicz Ludtka, Oak Ridge, TN (US);
Gerard Michael Ludtka, Oak Ridge, TN (US);
Felix Leonard Paulauskas, Knoxville, TN (US);
John Daniel Kennedy Rivard, Washington, DC (US);
UT-BATTELLE, LLC, Oak Ridge, TN (US);
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° C. and less than 2200° C., wherein, in particular embodiments, the carbonization process includes a low temperature carbonization step conducted at a temperature of at least or above 400° C. or 500° C. and less than or up to 1000° C., 1100° C., or 1200° C., followed by a high temperature carbonization step conducted at a temperature of at least or above 1200° 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%.