Methods for preparing nanocomposites with thermal properties modified by powder size below 100 nanometers. Both low-loaded and highly-loaded nanocomposites are included. Nanoscale coated, un-coated, whisker type fillers are taught. Thermal nanocomposite layers may be prepared on substrates.
대표청구항▼
1. A method for preparing a thermal nanocomposite comprising: processing a nanocomposite mixture to form a thermal nanocomposite comprising less than or equal to 80% nanofillers by volume in a solid polymer matrix, having a connectivity of nanofillers in 1, 2, and/or 3 dimensions, and having a therm
1. A method for preparing a thermal nanocomposite comprising: processing a nanocomposite mixture to form a thermal nanocomposite comprising less than or equal to 80% nanofillers by volume in a solid polymer matrix, having a connectivity of nanofillers in 1, 2, and/or 3 dimensions, and having a thermal conductivity that differs by more than 20% as compared with the thermal conductivity exhibited by a composite material of a similar composition with filler particles having a domain size of 1 micron,the nanocomposite mixture comprising: nanofillers comprising surface treated nanoparticles and having a domain size equal to or less than the mean free path of phonons, wherein the nanofillers comprise a composition selected from the group consisting of carbides, nitrides, borides, phosphides, and silicides, with the proviso that the nanofillers do not comprise oxygen; anda polymer matrix. 2. The method of claim 1 further comprising mixing the nanofillers, the polymer matrix, and a secondary species material selected from the group consisting of: solvents, dispersants, binders, modifiers, detergents, and additives. 3. The method of claim 1 wherein the solid thermal nanocomposite comprises heterogeneous loading of the nanofillers. 4. The method of claim 1 further comprising depositing the nanocomposite on a substrate. 5. The method of claim 1 further comprising applying the nanocomposite as a layer over another substance. 6. The method of claim 1 wherein the nanofillers comprise a surface consisting of a thin layer of a phase that is compatible with the matrix composition or a surface wherein a precursor has been reacted with the surface of the nanofillers. 7. The method of claim 1 wherein the nanofillers comprise one or more elements selected from the group consisting of: aluminum, barium, bismuth, cadmium, calcium, cerium, cesium, cobalt, copper, europium, gallium, gold, indium, iron, lanthanum, lithium, magnesium, manganese, molybdenum, neodymium, nickel, niobium, palladium, platinum, potassium, praseodymium, scandium, silver, sodium, strontium, tantalum, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. 8. The method of claim 1 wherein the nanofillers comprise one or more elements selected from the group consisting of: antimony, boron, bromine, carbon, fluorine, germanium, hydrogen, iodine, nitrogen, phosphorus, and silicon. 9. The method of claim 1 wherein the nanofillers comprise whiskers. 10. A method for preparing a thermal nanocomposite comprising: processing a nanocomposite mixture to form a solid thermal nanocomposite comprising less than or equal to 80% nanofillers by volume in a solid polymer matrix, having a connectivity of nanofillers in 1, 2, and/or 3 dimensions, and having a thermal conductivity that differs by more than 20% as compared with the thermal conductivity exhibited by a composite material of a similar composition with filler particles having a domain size of 1 micron,the nanocomposite mixture comprising: nanofillers comprising coated nanoparticles and having a domain size equal to or less than the mean free path of phonons, wherein the nanofillers comprise a composition selected from the group consisting of carbides, nitrides, borides, phosphides, and silicides, with the proviso that the nanofillers do not comprise oxygen; anda polymer matrix. 11. The method of claim 10 further comprising mixing the nanofillers, the polymer matrix, and a secondary species material selected from the group consisting of: solvents, dispersants, binders, modifiers, detergents, and additives. 12. The method of claim 10 wherein the solid thermal nanocomposite comprises heterogeneous loading of the nanofillers. 13. The method of claim 10 further comprising depositing the nanocomposite on a substrate. 14. The method of claim 10 further comprising depositing the nanocomposite as a layer over another substance. 15. The method of claim 10 wherein the nanofillers comprise a surface consisting of a thin layer of a phase that is compatible with the matrix composition or a surface wherein a precursor has been reacted with the surface of the nanofillers. 16. The method of claim 10 wherein the nanofillers comprise one or more elements selected from the group consisting of: aluminum, barium, bismuth, cadmium, calcium, cerium, cesium, cobalt, copper, europium, gallium, gold, indium, iron, lanthanum, lithium, magnesium, manganese, molybdenum, neodymium, nickel, niobium, palladium, platinum, potassium, praseodymium, scandium, silver, sodium, strontium, tantalum, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. 17. The method of claim 10 wherein the nanofillers comprise one or more elements selected from the group consisting of: antimony, boron, bromine, carbon, fluorine, germanium, hydrogen, iodine, nitrogen, phosphorus, and silicon. 18. The method of claim 10 wherein the nanofillers comprise whiskers. 19. The method of claim 10 wherein the nanofillers comprise nanoparticles comprising a polymer coating or a monomer coating. 20. The method of claim 10 wherein the nanofillers comprise surface treated particles. 21. The method of claim 10 wherein the nanofillers comprise two or more elements selected from the group consisting of: aluminum, barium, bismuth, cadmium, calcium, cerium, cesium, cobalt, copper, europium, gallium, gold, indium, iron, lanthanum, lithium, magnesium, manganese, molybdenum, neodymium, nickel, niobium, palladium, platinum, potassium, praseodymium, scandium, silver, sodium, strontium, tantalum, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. 22. The method of claim 10 wherein the nanofillers comprise two or more elements selected from the group consisting of: antimony, boron, bromine, carbon, fluorine, germanium, hydrogen, iodine, nitrogen, phosphorus, and silicon. 23. The method of claim 1, wherein the polymer matrix is dissolved in the solvent and the processing removes the solvent. 24. The method of claim 10, wherein the polymer matrix is dissolved in the solvent and the processing removes the solvent. 25. The method of claim 1, wherein the nanocomposite comprises 20% to 80% nanofillers by volume. 26. The method of claim 10, wherein the nanocomposite comprises 20% to 80% nanofillers by volume.
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