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Apparatus and method for carbon fiber surface treatment

United States Patent

June 3, 2014
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
An apparatus and method for enhancing the surface energy and/or surface chemistry of carbon fibers involves exposing the fibers to direct or indirect contact with atmospheric pressure plasma generated using a background gas containing at least some oxygen or other reactive species. The fiber may be exposed directly to the plasma, provided that the plasma is nonfilamentary, or the fiber may be exposed indirectly through contact with gases exhausting from a plasma discharge maintained in a separate volume. In either case, the process is carried out at or near atmospheric pressure, thereby eliminating the need for vacuum equipment. The process may be further modified by moistening the fibers with selected oxygen-containing liquids before exposure to the plasma.
Paulauskas; Felix L. (Knoxville, TN), Sherman; Daniel M. (Knoxville, TN)
UT-Battelle, LLC (Oak Ridge, TN), Remaxco Technologies, LLC (Knoxville, TN)
13/ 555,476
July 23, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with Government support under Contract No. DE-AC05-00OR22725 awarded by the U. S. Department of Energy to UT-Battelle, LLC, and the Government has certain rights in this invention.