▎ 摘　　要

NOVELTY - Producing carbon nanotube in situ toughened graphene film involves dispersing carbon nanotubes in 0.5-1 g/L solution of surface active agent. The solution is ultrasonicated using ultrasonic power of 60-90 watts for 10-30 minutes to obtain partially-cut carbon nano-tube dispersion which is uniformly supported on the metal foil, and the loading amount of carbon nano-tube dispersion on the metal foil is 0.1-10 mg/cm2. The metal foil carrying carbon nanotubes on the surface is placed in the heating zone of chemical vapor deposition atmosphere furnace which is evacuated to -0.1 megapascals. USE - Method for prepare carbon nanotube in situ toughened graphene film used in transparent film electrode, thin film electronic touch screen, high sensitivity sensor, transistor and flexible thin film electronic device (claimed). ADVANTAGE - The method enables to prepare carbon nanotube in situ toughened graphene film which has high mechanical strength, excellent conductivity, transparency and conductivity. DETAILED DESCRIPTION - Producing carbon nanotube in situ toughened graphene film involves dispersing carbon nanotubes in 0.5-1 g/L solution of surface active agent. The solution is ultrasonicated using ultrasonic power of 60-90 watts for 10-30 minutes to obtain partially-cut carbon nano-tube dispersion which is uniformly supported on the metal foil, and the loading amount of carbon nanotube dispersion on the metal foil is 0.1-10 mg/cm2. The metal foil carrying carbon nanotubes on the surface is placed in the heating zone of chemical vapor deposition atmosphere furnace which is evacuated to -0.1 megapascals. The furnace is heated to 900-1070 degrees C for 10-30 minutes followed by the addition of methane to maintain the chemical vapor phase growth for 5-30 minutes. The metal foil is removed from the constant temperature zone until cooled to room temperature and then an inert gas is introduced into the furnace to remove the metal foil having a carbon nanotube/graphene film on its surface. The etching solution is prepared by mixing ammonium thiosulfate, butyl alcohol and deionized water in mass volume ratio of 1 g:1-10 ml:100-1000 ml. The metal foil having a carbon nanotube/graphene film on its surface is placed on the liquid surface of the etching solution, and the metal foil is completely etched to obtain the carbon nanotubes in-situ toughened graphene film floating on the surface of the etching solution. The carbon nanotubes in-situ toughened graphene film is transferred to aqueous solution of butanol until the etching solution is completely cleaned.