▎ 摘　　要

NOVELTY - The utility model claims a new-type non-combustible ground heating system, comprising a temperature controller and a flame-retardant insulating layer orderly set on the ground from bottom to top, PTC graphene electric heating film, thermal-conductive flame-retardant cement mortar layer and a ground decorative layer, flame-retardant cable is buried between the flame-retardant insulating layer and the thermal-conductive flame-retardant cement mortar layer; the PTC graphene electric heating film comprises a lower layer inflaming retarding insulating heat conducting layer and an upper layer inflaming retarding insulating heat conducting layer compounded with each other; the lower layer inflaming retarding insulating heat conducting layer is printed with a PTC graphene heating ink layer; two ends of the PTC graphene heating ink layer are respectively provided with a conductive sheet; The conductive sheet of the PTC graphene electric heating film is electrically connected with the temperature controller through the flame-retardant cable; the temperature controller is connected with the commercial power. Because the PTC graphene electric heating film has uniform heat conduction, and PTC graphene electric heating film of self-limiting temperature characteristic, not continuously heating, high safety performance; At the same time, the flame-retardant insulating layer and the flame-retardant property of the heat-conductive flame-retardant cement mortar layer are self-flame-retardant, and the fire safety hazard is avoided.