High temperature composites and their application
AssigneeOceanit Laboratories, Inc.
InventorsVinod P. Veedu, Ashavani Kumar, Sumil Thapa
Life of this patent
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Abstract
A high temperature composite includes a binder, cement or geopolymer and ceramic filler, negative coefficient of thermal expansion materials of AM2O8 or A2(MO4)3 family or ZrV2O7. The material is compatible with concrete, any ceramics or metals or metal alloy. The material is heat shock resistant and stable in harsh chemical environments and is impermeable to most solvents. The new sealant materials can be used as sealants, heat shock resistant structural materials and coatings.
Claims20
A product comprising a sealant material comprising a binder, a ceramic filler and a family of negative thermal expansion coefficient materials, wherein the family of negative thermal expansion coefficient materials is selected from the group consisting of AM2O8 or A2(MO4)3 wherein (A=Zr or Hf, M=Mo or W), ZrV2O7, and combinations thereof, wherein the binder is selected from cement, geopolymer, polymer, metal, and combinations thereof, and wherein the family of negative thermal expansion coefficient materials is greater than 40% up to 59% of a combination of the binder, the ceramic filler and the family of negative thermal expansion coefficient materials.
A process for making a sealant material, comprising mixing a powdered or liquid binder and a powdered or liquid filler material, further comprising mixing greater than 40% up to 59% of total content of a family of negative thermal expansion coefficient materials selected from the group consisting of AM2O8 or A2(MO4)3 family, wherein (A=Zr or Hf, M=Mo or W), or ZrV2O7, and combinations thereof, mixing the powdered binder and filler, homogenizing the mixed powdered or liquid binder and filler into a paste, liquid or dispersion and applying the paste liquid or dispersion and wherein the binder is selected from cement, geopolymer, polymer, metal, and combinations thereof.
Dependencies are inferred from the claim text.