A kind of aluminum-based copper clad laminate with graphene/carbon nanotube composite heat dissipation coating and coating method thereof
A technology of carbon nanotube composite and heat-dissipating coating, which is applied in coatings, circuit heating devices, printed circuits, etc., can solve problems such as limiting the heat dissipation space of electronic devices, affecting product quality, and crashing, so as to reduce maintenance costs and manpower. Accelerates the effect of fast dissipating, lowering and internal temperature
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Embodiment 1
[0021] (1) The mixed solvent of graphene / carbon nanotubes (mass ratio 1:1) and deionized water, ethanol, acetone (mass ratio of deionized water, ethanol, acetone is 1:2:3) according to 15 : The mass ratio of 85 was mixed and ultrasonically dispersed for 30min under the condition of 30KHz frequency and 2000W power to obtain the graphene / carbon nanotube composite heat dissipation coating dispersion;
[0022] (2) Spray the graphene / carbon nanotube composite heat dissipation coating dispersion liquid obtained in step (1) on the surface of the aluminum profile substrate of the radiator, and then undergo a curing treatment at 160°C for 1.2 hours to obtain a graphene / carbon nanotube composite Heat dissipation coating, the thickness of the heat dissipation coating after curing is controlled to be 100 μm.
[0023] After testing: the thermal conductivity of the graphene / carbon nanotube composite heat dissipation coating prepared in this example is 780w / m·k;
[0024] Then use the scratc...
Embodiment 2
[0026] Compared with Example 1, before spraying the graphene / carbon nanotube composite heat dissipation coating dispersion, the reduced glutathione dispersion was coated on the surface of the radiator aluminum profile substrate, and the rest of the operations were the same as in Example 1 :
[0027] (1) The mixed solvent of graphene / carbon nanotubes (mass ratio 1:1) and deionized water, ethanol, acetone (mass ratio of deionized water, ethanol, acetone is 1:2:3) according to 15 : The mass ratio of 85 was mixed and ultrasonically dispersed for 30min under the condition of 30KHz frequency and 2000W power to obtain the graphene / carbon nanotube composite heat dissipation coating dispersion;
[0028] (2) Disperse the reduced glutathione with deionized water to a concentration of 42g / L and then quickly coat the surface of the aluminum profile substrate of the radiator, and then quickly spray the graphene / carbon obtained in step (1) The nanotube composite heat dissipation coating dis...
Embodiment 3
[0032] Compared with Example 1, only a certain amount of binding agent is added in the dispersion liquid of step (1), and all the other operations are the same as Example 1:
[0033] (1) the mixed solvent of graphene / carbon nanotube (mass ratio 1:1), epoxy resin binder and deionized water, ethanol, acetone (the mass ratio of deionized water, ethanol, acetone is 1 : 2: 3) mixed according to the mass ratio of 15: 8: 77 and ultrasonically dispersed for 30 min under the condition of frequency 30KHz and power 2000W to obtain graphene / carbon nanotube composite heat dissipation coating dispersion;
[0034] (2) Spray the graphene / carbon nanotube composite heat dissipation coating dispersion liquid obtained in step (1) on the surface of the aluminum profile substrate of the radiator, and then undergo a curing treatment at 160°C for 1.2 hours to obtain a graphene / carbon nanotube composite Heat dissipation coating, the thickness of the heat dissipation coating after curing is controlled ...
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