Abstract: Disclosed is a method of manufacturing a composite anode material for a lithium secondary battery containing nano-sized silicon and a carbonaceous material through a single process, the method including mixing a carbonaceous material and solid silicon and performing carbothermal shock for rapidly heating the carbonaceous material so that the solid silicon is melted using the heated carbonaceous material and is dispersed and attached in the form of particles to the surface of the carbonaceous material, the size of the silicon particles, which grow on the surface of the carbonaceous material, being adjusted during the carbothermal shock. Accordingly, processing costs can be lower than conventional methods of manufacturing silicon nanoparticles, and manufacturing costs can be further reduced by simultaneously performing formation of the silicon nanoparticles and compounding with the carbonaceous material.

Abstract: Provided is a method of producing a carbon fiber, the method including: a) adding an acrylonitrile-based polymer solution to a solution containing a glycol-based compound having a boiling point of 180 to 210° C. to precipitate an acrylonitrile-based polymer; b) melt spinning the acrylonitrile-based polymer to obtain a spun fiber; and c) performing stabilization and carbonization on the spun fiber to obtain a carbon fiber.

Abstract: Provided is a method of producing a carbon fiber, the method including: a) adding an acrylonitrile-based polymer solution to a solution containing a glycol-based compound having a boiling point of 180 to 210° C. to precipitate an acrylonitrile-based polymer; b) melt spinning the acrylonitrile-based polymer to obtain a spun fiber; and c) performing stabilization and carbonization on the spun fiber to obtain a carbon fiber.

Abstract: Disclosed is a method of manufacturing a composite anode material for a lithium secondary battery containing nano-sized silicon and a carbonaceous material through a single process, the method including mixing a carbonaceous material and solid silicon and performing carbothermal shock for rapidly heating the carbonaceous material so that the solid silicon is melted using the heated carbonaceous material and is dispersed and attached in the form of particles to the surface of the carbonaceous material, the size of the silicon particles, which grow on the surface of the carbonaceous material, being adjusted during the carbothermal shock. Accordingly, processing costs can be lower than conventional methods of manufacturing silicon nanoparticles, and manufacturing costs can be further reduced by simultaneously performing formation of the silicon nanoparticles and compounding with the carbonaceous material.

Abstract: A functional cotton spray composition includes: 100 parts by weight of cotton fibers having a length of 3 mm or less; 0.5 to 5 parts by weight of a phase change material; 0.5 to 1 parts by weight of a titanium dioxide photoactive catalyst; 0.5 to 2 parts by weight of at least one natural pigment selected from the group consisting of a pine needle powder, a green tea powder, a mugwort powder, an indigo plant powder, a gardenia powder, a charcoal powder and a yellow soil powder; 0.5 to 5 parts by weight of a dispersant; 5 to 20 parts by weight of a viscosity improver; 10 to 20 parts by weight of an organic flame retardant; 5 to 15 parts by weight of an inorganic flame retardant; 0.5 to 3 parts by weight of an antimicrobial and antifungal agent; and 300 to 600 parts by weight of viscosity-controlling water.

Abstract: A functional cotton spray composition includes: 100 parts by weight of cotton fibers having a length of 3 mm or less; 0.5 to 5 parts by weight of a phase change material; 0.5 to 1 parts by weight of a titanium dioxide photoactive catalyst; 0.5 to 2 parts by weight of at least one natural pigment selected from the group consisting of a pine needle powder, a green tea powder, a mugwort powder, an indigo plant powder, a gardenia powder, a charcoal powder and a yellow soil powder; 0.5 to 5 parts by weight of a dispersant; 5 to 20 parts by weight of a viscosity improver; 10 to 20 parts by weight of an organic flame retardant; 5 to 15 parts by weight of an inorganic flame retardant; 0.5 to 3 parts by weight of an antimicrobial and antifungal agent; and 300 to 600 parts by weight of viscosity-controlling water.