Method for rapid fabrication of fiber preforms and structural composite materials

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872151

Klett, James W ^[1]; Burchell, Timothy D ^[2]; Bailey, Jeffrey L ^[3]

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1. Knoxville, TN
2. Oak Ridge, TN
3. Clinton, TN

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.degree. C. for 14 hours and hot pressed at 2000 psi at 400.degree. C. for 3 hours. The hot pressed part is carbonized at 650.degree. C. under nitrogen for 3 hours and graphite at 2400.degree. 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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5871838
• OSTI ID: 872151
• Country of Publication: United States
• Language: English

Related Subjects

method
rapid
fabrication
fiber
preforms
structural
composite
materials
densified
carbon
matrix
preform
vacuum
molding
aqueous
slurry
fibers
carbonizable
organic
powder
form
molded
dried
oven
50
degree
14
hours
hot
pressed
2000
psi
400
carbonized
650
nitrogen
graphite
2400
graphitic
structure
density
cc
composite preform
vacuum molding
matrix carbon
hot pressed
carbon fibers
composite materials
carbon fiber
composite material
fiber composite
aqueous slurry
carbon matrix
organic powder
densified carbon
hot press
carbonizable organic
rapid fabrication
structural composite
composite mat
fiber preform
fiber preforms
omposite materials
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