Method for rapid fabrication of fiber preforms and structural composite materials
Patent
·
OSTI ID:321239
A densified carbon matrix carbon fiber composite preform is made by vacuum molding an aqueous slurry of carbon fibers and carbonizable organic powder to form a molded part. The molded part is dried in an oven at 50 C for 14 hours and hot pressed at 2000 psi at 400 C for 3 hours. The hot pressed part is carbonized at 650 C under nitrogen for 3 hours and graphitized at 2400 C to form a graphitic structure in the matrix of the densified carbon matrix carbon fiber composite preform. The densified preform has a density greater than 1.1 g/cc. 12 figs.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- US 5,871,838/A/
- Application Number:
- PAN: 8-774,748
- OSTI ID:
- 321239
- Resource Relation:
- Other Information: PBD: 16 Feb 1999
- Country of Publication:
- United States
- Language:
- English
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