▎ 摘　　要

NOVELTY - Composition comprises 60-78 wt.% ceramic mixture, 20-35 wt.% curing agent and 1-10 wt.% graphene compound to prevent cracking of coating film. The graphene compound is produced by oxidizing graphite with sulfuric acid and potassium permanganate to obtain graphene oxide, mixing the graphene oxide with phenylhydrazine at room temperature, reducing the graphene oxide, and uniformly dispersing particles in the composition. The ceramic mixture includes 100 pts. wt. silica sol, 10-100 pts. wt. filler, 1-25 pts. wt. copper, 1-10 pts. wt. cerium or platinum and 1-20 pts. wt. rare earth. USE - The composition is useful for coating far-infrared heat radiation panel (claimed). ADVANTAGE - The composition enhances cracks or color deterioration, and has uniform heat radiation characteristic. DETAILED DESCRIPTION - Composition comprises 60-78 wt.% ceramic mixture, 20-35 wt.% curing agent and 1-10 wt.% graphene compound to prevent cracking of coating film. The graphene compound is produced by oxidizing graphite with sulfuric acid and potassium permanganate to obtain graphene oxide, mixing the graphene oxide with phenylhydrazine at room temperature, reducing the graphene oxide, and uniformly dispersing particles in the composition. The ceramic mixture includes 100 pts. wt. silica sol, 10-100 pts. wt. filler containing silicon carbide, iron(II) oxide and manganese(II) oxide in weight ratio of 1:0.2-0.4:0.1-0.3, 1-25 pts. wt. copper, 1-10 pts. wt. cerium or platinum and 1-20 pts. wt. rare earth. An INDEPENDENT CLAIM is also included for far-infrared heat radiation panel comprising a heat releasing unit disposed on front surface to emit far-infrared rays, provided with a coating layer by coating the coating composition on surface, and a heater attaching unit providing on back surface of the heat releasing unit. The heater attaching unit is provided with an engaging groove which is open in back direction of the heater attaching unit, provided with a support piece which is protrudes from back side of the heater attaching unit. The engaging groove is providing at least two in numbers at regular intervals, and spaced apart on the heat releasing unit. The heater is formed in U shape curve for coupling on the heater attaching unit.