Ceramic foam precursor resin composition
AssigneeNorthrop Grumman Corporation
InventorsDavid Eric Daws, Nicholas T. Castellucci, Harry Wellington Carpenter, Mary Wagner Colby
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Abstract
The present invention is embodied in a ceramic foam made by mixing a liquid pre-ceramic resin and a liquid phenolic resin, allowing the resultant mixture to chemically foam, curing the mixture for a time and at a temperature sufficiently to convert the mixture to a polymeric foam, and then heating the resultant polymeric foam for a time and at a temperature sufficient to break-down polymers of the polymeric foam and convert the polymeric foam to a ceramic foam. The ceramic foam of the present invention contains residual decomposed components of the liquid phenolic resin and/or liquid pre-ceramic resin.
Claims5
A ceramic foam precursor resin composition comprising pre-ceramic resin, phenolic resin, and electrically conductive strengthening fibers mixed therein, wherein the respective resins comprise in relation to each other greater than about 50 wt. % up to 90 wt. % pre-ceramic resin, and greater than about 10 wt. % and less than 50 wt. % phenolic resin.
Dependencies are inferred from the claim text.