Method of producing carbon fibers, and methods of making protective clothing and a filter module
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United States of America Patent
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May 4, 2010
Grant Date -
Jun 14, 2007
app pub date -
Jan 22, 2007
filing date -
Jun 17, 2002
priority date (Note) -
Expired
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Abstract
, and also a method for the production thereof. First, a spinning mixture containing polyacrylonitrile-based polymer A and an organic or metallo-organic polymer B is produced. Next, the spinning mixture is spun to form mixed fibers of polymer A and polymer B. The mixed fiber is stabilized by oxidation. This is followed by carbonization or graphitization of the mixed fiber under non-oxidizing conditions in such a way that the polymer B forms a carbon and/or metal and/or metal carbide residue of at least 22 wt %, the residue forming active centers.
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