Aluminum matrix directional carbon nano tube copper plating composite radiating material and preparation method
A technology of composite heat dissipation materials and carbon nanotubes, which is applied in metal material coating process, gaseous chemical plating, plating of superimposed layers, etc., can solve the problems of difficult heat dissipation materials and low thermal conductivity, and solve the problem of heavy weight Effect
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Embodiment 1
[0030] The preparation method of aluminum-based oriented carbon nanotube copper-plated composite heat dissipation material, the steps are as follows:
[0031] Oriented carbon nanotube arrays were grown on aluminum sheets by chemical vapor deposition, the aluminum sheets were immersed in ethanol for 5 minutes, and then placed in a tube furnace after drying, and ferrocene solids were placed in the tube furnace to make 0.1 g of catalyst. Heating to 630°C in an argon atmosphere for 60 min, feeding hydrogen to maintain a reducing atmosphere, feeding ethylene as a carbon source, and obtaining an array of aluminum-based oriented carbon nanotubes. like figure 1 As shown, the carbon nanotubes in the composite are grown vertically on the aluminum substrate, and the carbon nanotubes are aligned in parallel. After testing, the thermal conductivity of this material is 372 W / mK, which is higher than that of the aluminum material, which is 237 W / mK.
[0032] The aluminum-based oriented car...
Embodiment 2
[0035] The preparation method of aluminum-based oriented carbon nanotube copper-plated composite heat dissipation material, the steps are as follows:
[0036] Oriented carbon nanotube arrays were grown on aluminum sheets by chemical vapor deposition, the aluminum sheets were immersed in ethanol for 5 minutes, and then placed in a tube furnace after drying, and ferrocene solids were placed in the tube furnace to make 0.1 g of catalyst. Heating to 640°C in an argon atmosphere for 60 min, feeding hydrogen to maintain a reducing atmosphere, feeding ethylene as a carbon source, and obtaining an array of aluminum-based oriented carbon nanotubes.
[0037] The aluminum-based oriented carbon nanotube array is used as the cathode, and the copper plate is used as the anode for copper electroplating. Electroplating solution composition: copper pyrophosphate 50 g / L, potassium pyrophosphate 200 g / L, ammonium citrate 20 g / L, PEG1500 0.4 g / L, 2-mercaptobenzimidazole 0.5%, 2-mercaptobenzothiaz...
Embodiment 3
[0040] The preparation method of aluminum-based oriented carbon nanotube copper-plated composite heat dissipation material, the steps are as follows:
[0041] Oriented carbon nanotube arrays were grown on aluminum sheets by chemical vapor deposition. The aluminum sheets were immersed in ethanol and ultrasonicated for 5 minutes. After drying, they were placed in a tube furnace. The ferrocene solid was placed in the tube furnace as a catalyst. Heating to 640°C in a gas atmosphere for 60 min, feeding hydrogen to maintain a reducing atmosphere, feeding acetylene as a carbon source, and obtaining an array of aluminum-based oriented carbon nanotubes.
[0042]The aluminum-based oriented carbon nanotube array is used as the cathode, and the copper plate is used as the anode for copper electroplating. Electroplating solution composition: copper pyrophosphate 60 g / L, potassium pyrophosphate 300 g / L, ammonium citrate 30 g / L, PEG2000 0.8 g / L, 2-mercaptobenzimidazole 1.2%, 2-mercaptobenzot...
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