Preparation method of carbon nanotube/glass fiber cloth flexible film heater

The invention discloses a preparation method of a carbon nanotube/glass fiber cloth flexible film heater, which mainly comprises the following steps of: coating single-walled carbon nanotube dispersion liquid on a glass fiber cloth substrate layer by layer by adopting a Mailey rod coating method, and welding carbon nanotubes through annealing post-treatment so as to reduce the surface resistance of a film and increase the electrical stability of the film. The preparation method is characterized in that (1) glass fiber cloth with high flexibility, high heat resistance and high mechanical strength is used as a substrate, and single-walled carbon nanotubes with high electric conductivity and heat conductivity are used as raw materials, so that a composite film heater with stable structure, high heating rate and super flexibility is prepared; (2) the thin film heater is simple in preparation process and short in period, and the temperature of a thin film with the sheet resistance of 20 omega/sq can be raised to 1