Composite foams
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsJoel M. Williams, Jr., Alice M. Nyitray, Mark H. Wilkerson
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Abstract
Composite foams are provided comprising a first rigid, microcellular, open-celled organic polymer foam having a density of from about 0.015 g/cm.sup.3 to about 0.20 g/cm.sup.3 and a pore size of from about 1 micron to about 30 microns, said first foam containing a second polymer having a density of from about 0.015 g/cm.sup.3 to about 0.20 g/cm.sup.3 or a second polymer foam having a density of from about 0.015 g/cm.sup.3 to about 0.20 g/cm.sup.3 and a pore size of from about 0.01 microns to about 1.0 micron within the open cells of said first foam.
Claims6
A method of making a composite foam comprising:
- a. forming a first rigid, microcellular, open-celled selected from the group consisting of a polystyrene foam and a carbon foam having a density from about 0.015 g/cm.sup.3 to about 0.10 g/cm.sup.3 and a pore size of from about 1 micron to about 30 microns;
- and
- b. filling the open cells of said first foam with a second material selected from the group consisting of a silicon aerogel foam, a resorcinol-formaldehyde foam a phlorogluecinol-formaldehyde foam, or a polystyrene foam having a density of from about 0.01 g/cm.sup.3 to about 0.60 g/cm.sup.3.
Dependencies are inferred from the claim text.