▎ 摘　　要

NOVELTY - Graphene-based elastic flame-retardant electric heating film comprises 100 pts. wt. water-resistant flame-retardant coating resin, 150-200 pts. wt. graphene and carbon nanotube composite dispersion liquid, 1-10 pts. wt. dispersant and 200 pts. wt. solvent. The water-based flame-retardant coating resin includes 100 pts. wt. aqueous acrylic resin and aqueous polyurethane dispersion and aqueous polyurethane emulsion composition, 1-10 pts. wt. silane coupling agent and 1-25 pts. wt. flame retardant. USE - Graphene-based elastic flame-retardant electric heating film. ADVANTAGE - The graphene-based elastic flame-retardant electric heating film contains cover layer formed by the halogen-free flame retardant that synergizes with the sheet shield of graphene to improve the flame retardancy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene-based elastic flame-retardant electric heating film, which involves adding water-based acrylic acid, water-based polyurethane dispersion, and water-based polyurethane emulsion to the stirring container, adding silane coupling agent during the stirring process, stirring, adding flame retardant, stirring the contents, and filtering the material to obtain an aqueous flame retardant resin; adding deionized water and dispersant to the container, stirring and mixing uniformly, adding carbon nanotubes and graphene powder to the stirring container under stirring and mixing the contents uniformly, sonicating the obtained mixture, and transferring it to a horizontal grinder to obtain an aqueous graphene and carbon nanotube dispersion liquid; adding water-based flame retardant resin, water-based graphene and carbon nanotube dispersion into a container, stirring and mixing uniformly, and filtering out the material to obtain water-based graphene flame-retardant conductive paint; uniformly distributing the water-based graphene flame retardant coating on the surface of the substrate by printing or coating to obtain a conductive layer; and performing electrode pressing or electrode printing on the conductive layer to obtain the desired product.