▎ 摘　　要

NOVELTY - Electric heating plate includes a high-temperature heat conduction plate (1), graphene heating coating (4) and conductive electrode coating (5). The high-temperature heat-conducting plate is coated with a graphene heat-generating coating, and the graphene heat-generating coating is sequentially coated with a conductive electrode coating and a high-temperature-resistant heat-conducting insulating protective coating. The graphene heating coating is electrically connected to the conductive electrode coating, and the high temperature resistant thermal conductive insulating protective coating (3) covers the graphene heating coating and the connecting portion of the conductive electrode coating and the graphene heating coating. USE - Electric heating plate. ADVANTAGE - The electric heating plate prevents the oxidation and attenuation of the graphene heating coating and prolong the life of the graphene heating coating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing paint for high temperature resistant thermal conductive insulating protective coating of electric heating plate, which involves: (A) mixing 15 wt.% water and 85 wt.% phosphorus pentoxide powder and heating to 50-60 degrees C, and stirring uniformly to obtain phosphoric acid solution; (B) stirring and mixing 18 wt.% magnesium hydroxide powder with 82 wt.% phosphoric acid solution, and heating to a boiling state until it becomes transparent, and then lowering the temperature to 15-25 degrees C to obtain magnesium phosphate solution; and (C) mixing 26 wt.% magnesium phosphate solution, 5 wt.% silica powder, 18 wt.% alumina powder, 24 wt.% silica sol, 25 wt.% ethanol solution (75 wt.% industrial alcohol), 1 wt.% of cross-linking agent powder, 0.3 wt.% of defoamer and 0.7 wt.% of boric acid powder are mixed by ball milling to produce high temperature thermally conductive insulating coating. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of electric heating plate. Heat conduction plate (1) Elastic conductive terminal (2) High temperature resistant thermal conductive insulating protective coating (3) Graphene heating coating (4) Conductive electrode coating (5)