Composite carbonaceous articles and process for making same
AssigneeCarbone USA Corporation
InventorYvon P. Cariou
Life of this patent
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Abstract
Disclosed is a composite carbonaceous article formed of carbon felt fabric intimately linked to vitreous carbon. A carbonizable high carbon resin is cast or centrifuged onto a carbon or precursor felt fabric to form shapes which can then be baked to carbonizing or graphitizing temperatures.
Claims14
A composite multi-layered carbonaceous article comprising:
- a felted fabric member having at least two surfaces and being composed of carbon fibers, a layer of vitreous carbon being bonded to at least one of said surfaces to be completely located only at that surface to form two distinct layers which are bonded together;
- said vitreous carbon having been produced by polymerizing on said fabric a carbonizable, polymerizable resin having a carbon content in the range of 40 to 90 percent,
- said layer having a closed microporosity and being gas impervious;
- only some of said carbon fibers penetrating into said layer of vitreous carbon.
A process for making a shaped composite multi-layered carbonaceous article comprising providing a felted fabric composed of carbon fibers, said fabric having at least two surfaces, bonding a carbonizable, polymerizable resin having a carbon content in the range of 40 to 90% and a polymerization catalyst to at least one of said surfaces under ambient temperature and pressure by polymerizing said resin to carbonizing or graphitizing temperatures so that said carbon is completely located only at the one surface to form two distinct layers which are bonded together.
Dependencies are inferred from the claim text.