Heat conducting insulating film material and method for manufacturing same
A thin film material, heat conduction and insulation technology, applied in organic insulators, plastic/resin/wax insulators, cooling/ventilation/heating transformation, etc., can solve the problems of low heat conduction efficiency and affect the heat dissipation effect of electronic and electrical systems, and achieve low cost , easy processing and forming, simple process effect
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[0021] Example one
[0022] Weigh 20kg cubic boron nitride, 10kg nano-zirconia, 10kg nano-molybdenum disulfide, and 60kg polyisobutylene, put them into the twin-screw extruder gradually, mix them at 150-170℃ for 3 hours, and extrude them in FEBOPP type three Stretching is carried out on the biaxially oriented film production line of layer co-extrusion. The thickness of the material obtained is 0.2mm, the thermal conductivity is 18W / m·K, and the volume resistance at 20°C is 1.0×10 5 m.
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[0023] Example two
[0024] Weigh 15kg cubic boron nitride, 4kg nano-zirconia, 6kg nano-molybdenum disulfide, and 75kg polyisobutylene, gradually put them into the reactor, and mix them at 150-170℃ for 3 hours to obtain a thick, high-temperature mixed carbon mixing liquid . Then, the thick carbon mixed liquid is rolled into a sheet at a temperature of 200° C. and a pressure of 180 MPa. The thickness of the material obtained is 1.0mm, the thermal conductivity of the material obtained is 10W / m·K, and the volume resistance at 20°C is 0.6×10 5 m.
Example Embodiment
[0025] Example three
[0026] Weigh 10kg cubic boron nitride, 6kg nano-zirconia, 4kg nano-molybdenum disulfide, and 80kg polyisobutylene, put them into the reactor gradually, and mix at 150-170℃ for 3 hours to obtain a thick, high-temperature mixed carbon-making mixed liquid . Then, the thick carbon mixed liquid is rolled into a sheet at a temperature of 200° C. and a pressure of 200 MPa. The thickness of the material obtained is 0.8mm, the thermal conductivity is 6W / m·K, and the volume resistance at 20°C is 0.2×10 5 m.
[0027] The thickness of the thermally conductive insulating film material of the present invention is 0.01-3mm, the thermal conductivity is 5-20W / mK, and the volume resistance is 0.1×10 when the insulation performance is 20°C. 5 m~1.7×10 5 m. The specific volume resistance of cubic boron nitride is 1.7×10 at 20°C 5 m, 2.3×10 at 500℃ 12 m; The thermal conductivity is quite high, about 12.3-28.9W / (m·K). The described nano-zirconia D50 is 0.1-3 microns, and the spec...
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