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Title: Apparatus and method for carbon fiber surface treatment

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.
Inventors:
;
Issue Date:
OSTI Identifier:
1133655
Assignee:
UT-Battelle, LLC (Oak Ridge, TN); Remaxco Technologies, LLC (Knoxville, TN) ORO
Patent Number(s):
8,741,395
Application Number:
13/555,476
Contract Number:
AC05-00OR22725
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Works referenced in this record:

Oxygen plasma modification of pitch-based isotropic carbon fibres
journal, January 2003

Surface characterization of PVP-sized and oxygen plasma-treated carbon fibers
journal, January 1998