Carbon nanofibers, method of producing carbon nanofibers, carbon fiber composite material using carbon nanofibers, and method of producing the carbon fiber composite material
US8513348B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Dec 2, 2008 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Oct 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A method of producing carbon nanofibers includes grinding untreated carbon nanofibers produced by a vapor growth method. The untreated carbon nanofibers are ground so that the ground carbon nanofibers have a tap density 1.5 to 10 times higher than that of the untreated carbon nanofibers. A method of producing a carbon fiber composite material includes mixing carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain a carbon fiber composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.