▎ 摘　　要

NOVELTY - A nano-carbon material electro-thermal film comprises raw materials of carbon nanotubes, graphene and nano cellulose, where the raw materials further comprises a flame retardant, and the flame retardant is a reactive phosphorus-nitrogen flame retardant. USE - Nano-carbon material electro-thermal film for composite electro thermal wood products. ADVANTAGE - The nano-carbon material electro-thermal film has low-pressure high-efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a nano-carbon material electro thermal film, which involves providing an aqueous solution containing carbon nanotubes, grapheme and nanocellulose, performing a vacuum filtration treatment on the aqueous solution containing carbon nanotubes, graphene and nanocellulose to obtain an electric heating film of nano carbon material on a filter membrane, separating the nanocarbon material electrothermal film from the filter film to obtain the finished product, where the preparation method further comprises immersing the prepared nano carbon material electrothermal film with a flame retardant solution.