Thermal nanocomposites
First Claim
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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; and
a polymer matrix.
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Abstract
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.
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Citations
26 Claims
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1. A method for preparing a thermal nanocomposite comprising:
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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; and a polymer matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 23, 25)
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10. A method for preparing a thermal nanocomposite comprising:
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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; and a polymer matrix. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 26)
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Specification