Apparatus and method for forming densified, carbon-carbon composites
US7332112B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2004 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | May 24, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/83
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus and method for forming a densified carbon-carbon composite. The apparatus includes: a green part molding station for forming a green part; a carbonization station for carbonizing the green part; and an impregnation station for impregnating the carbonized part with a substantially curing by-product free, high carbon yield resin. The impregnation station includes a mold forming a sealed enclosure configured in the shape of the carbonized part for receiving the carbonized part and a vacuum source for evacuating the mold. At least one resin injection port is in the mold and a supply of substantially curing by-product free, high carbon yield resin is connected to the resin injection port for injection into the mold. In the preferred embodiment, the substantially curing by-product free, high carbon yield resin is a cyanate ester having a viscosity of less than about 100 cps at 250° F. and a carbon yield value of greater than about 60 wt. %. The combination of a high carbon yield resin and a pressurized impregnation station configured to the shape of the composite part for use with a curing by-product free resin provides for a substantial reduction in the number of carbonizat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.