Carbon/carbon composites and methods of making carbon/carbon composites having increased fiber volume
US12117060B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Sep 18, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/77
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of making a carbonized preform for a carbon-carbon composite brake disk may comprise: stacking a plurality of textile fabric layers, each textile fabric layer in the plurality of textile fabric layers including oxidized polyacrylonitrile (PAN) fibers, each textile fabric layer in the plurality of textile fabric layers being more uniform than a typical fabric layer formed from cross-lapping; each fabric layer being thinner than a typical fabric layer from cross-lapping, needling the plurality of textile fabric layers to form a needled non-woven board; cutting a fibrous preform from the needled non-woven board; and carbonizing the fibrous preform. The resultant non-woven carbonized preform maintains a higher fiber volume and more consistent properties throughout than what would otherwise be achieved using a typical fabric layer from cross-lapping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.