Laminar carbon member and a method of manufacturing it
US4234650A · kind A · utility
Inventor
Key dates
| Filing date | May 25, 1978 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | May 25, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2959
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A thin, laminar carbon member made of carbon or graphite felt impregnated with a carbonaceous, hardenable, cokable binder is hardened under the action of pressure and temperature and subsequently coked or graphitized in such a way that the carbon or graphite felt is only partially impregnated with the binder, i.e. with a solution of impregnating agent which is at least partially driven out of the cavities in the felt, but so that a thin coating of impregnating agent remains on the felt fibres, whereafter the felt returns to its original shape, is dried and then compressed to the desired thickness, during which the impregnating agent simultaneously condenses, whereafter the carbon member is calcined and graphitized. The such manufactured partially impregnated carbon member has a gross density of 0.1 to 0.8 g/cm.sup.3 and a thickness of 0.1 to 5 mm, the ratio of the area to the thickness of the plate being at least 10.sup.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.