Gasifiable carbon-graphite fibers
US4311630A · kind A · utility
9Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1979 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Apr 17, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fine, carbon-graphite fibers do not combust during the combustion of a composite and are expelled into the air as fine conductive particles. Coating of the fibers with a salt of a metal having a work function below 4.2 eV such as an alkaline earth metal salt, e.g., calcium acetate, catalytically enhances combustion of the fibers at temperatures below 1000.degree. C. such that the fibers self-support combustion and burn to produce a non-conductive ash. Fire-polishing the fibers before application of the coating is desirable to remove sizing to expose the carbon surface to the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.