Method of making graphitic carbon-carbon composite
US12077440B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2022 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | May 22, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2387/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods of making a graphitic carbon-carbon composite from thermosetting polymer resin include (a) infusing bis-Schiff base resin into a carbon fiber reinforcement to form an uncured resin embedded composite, (b) positioning the uncured resin embedded composite on a substrate under a vacuum enclosure, (c) curing the bis-Schiff base resin at a first elevated temperature under vacuum to form a polymer matrix composite, (d) heating the polymer matrix composite at a second elevated temperature under inert atmosphere to form a porous carbon-carbon composite, (e) re-infusing bis-Schiff base resin into the porous carbon-carbon composite and curing under vacuum at a third elevated temperature to generate a reinfused porous carbon-carbon composite, and (f) heating the reinfused porous carbon-carbon composite at a fourth elevated temperature under inert gas to form the graphitic carbon-carbon composite. Further, the second elevated temperature and/or at least one instance of the fourth elevated temperature is greater than 1800° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.