Refractory foam
AssigneeZYP Coatings, Inc.
InventorsCressie E. Holcombe, JR., Patrick J. Ritt, William Brent Webb
Life of this patent
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Abstract
A porous refractory in the K2O—SiO2—B2O3 system is formed by chemical direct foaming by heating to over 600° C., resulting in adherent black or white foam. The foam can function as highly porous thermal insulation, a high or low thermal emissivity surface, as a sealant for deteriorated refractory surfaces, as a filler for pockmarks/holes/gaps or as a bonding agent for parts with large gaps between them.
Claims10
A coating composition being comprised of a mixture of potassium tetraborate tetrahydrate, ammonium pentaborate tetrahydrate, colloidal silica aqueous dispersion, and water, which forms a black refractory foam when applied, dried, and heated to a temperature above 600° C.
A coating composition being comprised of a mixture of potassium tetraborate tetrahydrate, potassium hydroxide solution, and colloidal silica aqueous dispersion, which forms a white refractory foam when applied, dried, and heated to a temperature above 600° C.
A coating composition being comprised of a mixture of potassium tetraborate tetrahydrate, potassium silicate powder, and colloidal silica aqueous dispersion, which forms a white refractory foam when applied, dried, and heated to a temperature above 600° C.
Dependencies are inferred from the claim text.