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US 8,080,499 B2Granted
Nanodiamond thermal grease
AssigneeKunshan Nano New Material Technology Co., Ltd.
InventorsHung-Tu Lu, Sergey Uvarov
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Abstract
The present invention discloses a nanodiamond thermal grease, which comprises a nanodiamond powder, a thermal powder and a substrate. The nanodiamond powder has volume percentage of 5% to 30%, the thermal powder has volume percentage of 40% to 90%, and the substrate has volume percentage of 5% to 30%. The nanodiamond powder and the thermal powder are distributed uniformly in the substrate to form the nanodiamond thermal grease having high thermal conductivity.
Claims5
A method of manufacturing a nanodiamond thermal grease, comprising the steps of:
- heating a substrate;
- putting a nanodiamond powder into the heated substrate;
- using a disperser to disperse the nanodiamond powder in the substrate;
- and
- putting a thermal powder into the mixture of the substrate and the nanodiamond powder, and blending the mixture to form the nanodiamond thermal grease;
- wherein the nanodiamond powder is present in a volume percentage of 5% to 30% of the grease;
- the thermal powder is present in a volume percentage of 40% to 90% of the grease, and comprises a first thermal powder and a second thermal powder, and the particle diameter of the first thermal powder is bigger than the particle diameter of the second thermal powder;
- the first thermal powder is powder having a diameter of 15 μm to 50 μm;
- the second thermal powder is powder having a diameter of 1 μm to 10 μm;
- the substrate is present in a volume percentage of 5% to 30% of the grease;
- the first and second thermal powders are selected from the group consisting of nickel boron, titanium dioxide, carbon black, carbon soot, aluminum carbide and combinations thereof;
- and the substrate is selected from the group consisting of polyvinyl acetate, polyethylene, acrylate, polypropylene, polyformaldehyde, polyvinyl alcohol, olive oil, paraffin oil, stearic acid and combinations thereof.
9 more elements
Dependencies are inferred from the claim text.