Abstract: The present invention relates to a method for preparing a graphene-containing inorganic coating composition for coating non-ferrous metal objects and a graphene-containing inorganic coating composition prepared thereby, in which the inorganic coating composition contains liquid silica sol that emits far-infrared rays and powdery graphene that has very excellent thermal conductivity, and thus it emits far-infrared rays beneficial to the human body while having excellent durability and thermal conductivity. The method comprises: adding isopropyl alcohol as a solvent to liquid silica sol and a liquid sealant, followed by uniform stirring for 2-3 hours, thereby preparing a first liquid binder; adding powdery graphene, filler and pigment to the first liquid binder, followed by stirring for 8-10 hours, thereby preparing a second binder; and adding a predetermined amount of an adhesion-enhancing agent to the second binder, followed by aging at a temperature of 25 to 32° C. for 9 to 11 hours.

Abstract: The present invention relates to a method for preparing a graphene-containing inorganic coating composition for coating non-ferrous metal objects and a graphene-containing inorganic coating composition prepared thereby, in which the inorganic coating composition contains liquid silica sol that emits far-infrared rays and powdery graphene that has very excellent thermal conductivity, and thus it emits far-infrared rays beneficial to the human body while having excellent durability and thermal conductivity. The method comprises: adding isopropyl alcohol as a solvent to liquid silica sol and a liquid sealant, followed by uniform stirring for 2-3 hours, thereby preparing a first liquid binder; adding powdery graphene, filler and pigment to the first liquid binder, followed by stirring for 8-10 hours, thereby preparing a second binder; and adding a predetermined amount of an adhesion-enhancing agent to the second binder, followed by aging at a temperature of 25 to 32° C. for 9 to 11 hours.

Abstract: A hair curling apparatus in which comb teeth protrude and retract includes an electro thermal line heater mounted within a cylindrical body to provide heat, comb teeth configured to protrude from the body to comb and wind hair, a cap and a handle in a front portion and a rear portion of the body, a shaft installed substantially at a center inside the body, a lever coupled to the handle, wherein the shaft is moved forward or backward when the lever is pushed or pulled, a link connected to the shaft through a pin, and a support connected to the link through the pin, wherein the support is raised or lowered in an upper or lower portion of the shaft, and the comb teeth protrudes or retracts through holes formed by perforating the cylindrical body.

Abstract: A hair curling apparatus in which comb teeth protrude and retract includes an electro thermal line heater mounted within a cylindrical body to provide heat, comb teeth configured to protrude from the body to comb and wind hair, a cap and a handle in a front portion and a rear portion of the body, a shaft installed substantially at a center inside the body, a lever coupled to the handle, wherein the shaft is moved forward or backward when the lever is pushed or pulled, a link connected to the shaft through a pin, and a support connected to the link through the pin, wherein the support is raised or lowered in an upper or lower portion of the shaft, and the comb teeth protrudes or retracts through holes formed by perforating the cylindrical body.