Super-compressible carbon nanotube films and micro-bundles
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United States of America Patent
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Jun 1, 2010
Grant Date -
Sep 13, 2007
app pub date -
Nov 21, 2006
filing date -
Nov 22, 2005
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Abstract
An open-cell carbon nanotube foam is made of a plurality of separated carbon nanotubes. The foam exhibits a Poisson's ratio substantially equal to zero, a compressibility of at least 85%, a recovery rate of at least 120 mm/min, a compressive strength of at least 12 MPa, a sag factor of at least 4, a fatigue resistance to no more than 15% permanent deformation when subjected to at least 1,000 compressive cycles at a strain of 85%, and/or a resilience of between 25% and 30%. The carbon nanotubes may be multiwalled carbon nanotubes that are aligned parallel to a thickness of a film comprising the foam.
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