Carbon-carbon composite and method of making
US5418063A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1989 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Jan 18, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Carbon-Carbon composite products comprising laminate plies formed from the carbon fabric having pitch-based carbon strands of relatively high modulus of elasticity in the warp direction. The fill direction carbon strands have a relatively low modulus of elasticity when compared to the warp direction strands and have a substantially lower end count than the higher modulus warp direction strands. A carbonaceous matrix is integrated with the fabric plies in order to bond the plies together. The matrix material may be glassy carbon or more preferably a crystalline graphitized carbon. In forming such carbon-carbon composite products, a layup is established of a plurality of the carbon fabric plies impregnated with a carbon containing matrix material, typically a thermoset resin. The layup is cured or partially cured and then pyrolized to a temperature sufficient to carbonize the matrix material. The carbonized matrix material is then densified by chemical vapor infiltration (CVI) using a gaseous hydrocarbon material as a carbon source. Following the densification step, the layup is heated at an elevated temperature substantially in excess of the pyrolysis temperature which is sufficient…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.