Sealing Member and Its Manufacture
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United States of America Patent
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Issued Date -
Jan 24, 2013
app pub date -
Jul 5, 2012
filing date -
Jul 21, 2011
priority date (Note) -
Abandoned
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Abstract
A sealing member is obtained by molding a carbon fiber composite material (50) including a perfluoroelastomer (FFKM), and carbon nanofibers dispersed in the perfluoroelastomer, the carbon nanofibers having an average diameter of 0.4 to 230 nm. The perfluoroelastomer (FFKM) has a TR-10 value of −10° C. or less as measured by a temperature-retraction test (TR test) in accordance with JIS K 6261. The carbon fiber composite material (50) in a crosslinked form has a peak temperature of a loss tangent (tandelta) of −15° C. or less as measured by a dynamic viscoelasticity test.
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