Process of preparing carbon naotube foam
A technology of carbon nanotubes and foams, applied in nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve problems such as low porosity, impact on electrical and thermal conductivity, etc.
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[0014] Example 1:
[0015] One gram of carbon nanotubes treated with mixed acid was dissolved in 80 ml of gelatin aqueous solution with a concentration of 1%, and the mixture was uniformly stirred and then sonicated with an ultrasonic instrument for about 30 minutes. Add 5ml of ethanol solvent to the mixed solution and stir for 60 minutes. Put the resultant product in a graphite mold and keep it under a pressure of 30Mpa for 15 minutes. Then take out the compressed tablets, put them in a vacuum drying oven at 120°C for 1 hour, and then heat them in N 2 After keeping the temperature at 400°C for 3 hours and cooling to room temperature naturally, a porous carbon nanotube foam with an average pore diameter of 50 nanometers is obtained.
Example Embodiment
[0016] Example 2
[0017] One gram of carbon nanotubes treated with mixed acid was dissolved in 80 ml of gelatin aqueous solution with a concentration of 3%, and the mixture was uniformly stirred and then sonicated with an ultrasonic instrument for about 60 minutes. Add 10 ml of ethanol solvent to the mixed solution and stir for 60 minutes. Put the resultant product in a graphite mold and keep it under a pressure of 30Mpa for 15 minutes. Then take out the compressed tablets, put them in a vacuum drying oven at 120°C for 1 hour, and then heat them in N 2 Keep the temperature at 400°C for 3 hours and cool to room temperature naturally to obtain a porous carbon nanotube foam with an average pore diameter of 80 nanometers.
Example Embodiment
[0018] Example 3
[0019] 1 gram of mixed acid-treated carbon nanotubes was dissolved in a 120ml gelatin aqueous solution with a concentration of 8%, stirred evenly and sonicated with an ultrasonic instrument for about 80 minutes. Add 15ml of butanol solvent to the mixed solution and stir for 60 minutes. The resultant product was put into a graphite mold and kept under a pressure of 50Mpa for 30 minutes. Then take out the compressed tablets, put them in a vacuum drying oven at 120°C for 1 hour, and then heat them in N 2 After keeping the temperature at 600°C for 3 hours and cooling to room temperature naturally, a porous carbon nanotube foam with an average pore diameter of 120 nanometers is obtained.
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