Carbonization shape forming of oxidized PAN fiber preform
US11993031B2 · kind B2 · utility
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23References
9Claims
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Key dates
| Filing date | Jun 3, 2022 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Jun 3, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/614
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A single stage OPF-to-carbon preform shape forming method includes positioning an oxidized PAN fiber preform with a female forming tool, positioning a vacuum bag over the oxidized PAN fiber preform, and vacuum forming the oxidized PAN fiber preform into a shaped body. The vacuum formed shaped body (while still in the shape forming fixture) may be loaded into a carbonization furnace and carbonized. The vacuum bag may be burned away in the carbonization furnace during carbonization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.