▎ 摘　　要

NOVELTY - Manufacture of a powder coating composition involves dispersing a polyester resin containing a carboxyl group, and a curing agent into a grinder to obtain a dispersion treatment material, hydrolyzing jute using hydrochloric acid, treating the hydrolyzed product with a mixed treatment agent comprising ammonium hydroxide and calcium sulfite at 110° C, bleaching, obtaining a primary treated product by catalyzing and drying the bleaching product using cobalt nitrate, heat-treating the jute-derived primary treated material for 3 three times in an oxygen-free environment and cooling to obtain a jute-derived secondary treated product, washing and drying the jute-derived secondary treated product to obtain a jute-derived graphene, performing additional dispersion treatment by adding jute-derived graphene, dispersion treatment material, 2-isopropylimidazole, and an additive, melting and processing the secondary dispersion treated material, cooling, and pulverizing the melted material. USE - Manufacture of powder coating composition used for electrostatic powder coating. ADVANTAGE - The method produces powder coating composition having minimized risk of ignition due to electrostatic discharge of the powder coating composition during the electrostatic powder coating process, and risk of fire or explosion accidents due to ignition of the powder coating composition in the powder coating working environment. The powder coating composition forms a coating film has excellent basic physical properties related to the electrostatic adhesion of the powder coating composition to a to-be-coated article, such as impact resistance, boiling water resistance, cathode peelability, and weather resistance. DETAILED DESCRIPTION - Manufacture of a powder coating composition involves mixing 10 pts. wt. dimethyl trans-1,4-cyclohexanedicarboxylate, 15 pts. wt. diethanolamine, and 1.1 pts. wt. sodium hydroxide, stirring and treating for 60 minutes at 80° C, cooling the stirring mixture to less than 20° C, preparing a curing agent having an average particle size of 10-20 μ m by pulverizing the cooled product with a mixer and filtering it with a mesh sieve, dispersing a polyester resin containing a carboxyl group, and the curing agent into a grinder to obtain a dispersion treatment material, hydrolyzing jute using hydrochloric acid at 90° C for 5-6 minutes, treating the hydrolyzed product with a mixed treatment agent comprising ammonium hydroxide and calcium sulfite at 110° C, bleaching using hydrogen peroxide for 6 hours at 100° C, obtaining a primary treated product derived from the jute by catalyzing and drying the bleaching product using cobalt nitrate, heat-treating the jute-derived primary treated material for 3 three times in an oxygen-free environment and cooling to obtain a jute-derived secondary treated product, washing and drying the jute-derived secondary treated product to obtain a jute-derived graphene, performing additional dispersion treatment by adding 2.5-2.8 pts. wt. jute-derived graphene, 64-66 pts. wt. dispersion treatment material, 1.4 pts. wt. 2-isopropylimidazole, and an additive, melting and processing the secondary dispersion treated material at 100-120° C, cooling, and pulverizing the melted material.