▎ 摘　　要

NOVELTY - Manufacturing planar heating element involves using mixing water with pulp formed by heating and decomposing chemical pulp or heat treatment mechanical pulp in a disintegrator. The surface treatment of carbon fibers is performed with an acid solution selected from nitric acid and sulfuric acid to form hydroxyl or carboxylate functional groups on the surface of the carbon fibers. A crosslinking agent containing an amine group is added and reacted to the surface-treated carbon fiber. A graphene oxide is added to the carbon fiber reacted with the crosslinking agent containing the amine group and reacting to coat the graphene oxide on the carbon fiber. The carbon fiber and graphene are mixed in the pulp and remixed to prepare a graphene carbon fiber heating paper. The graphene carbon fiber heating paper is completed, and then attached metal electrode to one or both sides of both edges of the graphene carbon fiber heating paper. USE - Method for manufacturing planar heating element using graphene carbon fiber heating paper. ADVANTAGE - The method manufactures the planar heating element in a simple, cost-effective and eco-friendly manner with excellent electrical and thermal conductivity. DETAILED DESCRIPTION - Manufacturing planar heating element involves using mixing water with pulp formed by heating and decomposing chemical pulp or heat treatment mechanical pulp in a disintegrator. The surface treatment of carbon fibers is performed with an acid solution selected from nitric acid and sulfuric acid to form hydroxyl or carboxylate functional groups on the surface of the carbon fibers. A crosslinking agent containing an amine group is added and reacted to the surface-treated carbon fiber. A graphene oxide is added to the carbon fiber reacted with the crosslinking agent containing the amine group and reacting to coat the graphene oxide on the carbon fiber. The carbon fiber and graphene are mixed in the pulp and remixed to prepare a graphene carbon fiber heating paper. The graphene carbon fiber heating paper is completed, and then attached metal electrode to one or both sides of both edges of the graphene carbon fiber heating paper. An insulating coating layer is formed by compression coating a resin made of synthetic rubber or silicon on upper and lower surfaces of the graphene carbon fiber heating paper to which the metal electrode is attached, respectively.