Super-compressible carbon nanotube films and micro-bundles
US7727624B2 · kind B2 · utility
19Cited by
1References
12Claims
0Family size
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Key dates
| Filing date | Nov 21, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249979
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.