High temperature compressed non-asbestos sheet
US4859526A · kind A · utility
14Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Feb 3, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/697
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high temperature compressed non-asbestos sheet is provided which is effective for gasketing applications in temperatures up to at least 900.degree. F. The sheet is formed from carbon fibers having a high percentage of carbonization and a low modulus of elasticity. The carbon content of the fibers is above 90% while the modulus of elasticity is less than 10,000,000 psi., and such fibers form at least 75% of the fiber content of the sheet. The carbon fibers may be blended with small portions of organic fibers to enhance the physical properties of the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.