▎ 摘　　要

NOVELTY - Preparing copper metal glaze using graphene comprises e.g. (i) weighing copper oxide, potassium nitrate, and quartz, and removing impurities from the above raw materials, (ii) placing quartz in kiln for calcination and then finely grinding, and then mixing with water and potassium nitrate powder according to the ratio of raw materials, and wet-grinded using wet mill, and screening, (iii) placing the copper oxide powder in suitable container, adding water and mixing, (iv) adding specific amount of graphite powder into container containing concentrated sulfuric acid, concentrating potassium permanganate in sulfuric acid and oxidizing graphite powder to obtain brown carboxylic acid group at the edge and in a plane graphite flake mainly comprising phenolic hydroxy group and epoxy group, and (v) ultrasonically oscillating the solution to obtain stable light brownish yellow single layer graphene oxide suspension. USE - The method is useful for preparing copper metal glaze using graphene. ADVANTAGE - The method: reduces copper oxide to copper; and improves strength of ceramic products and anti-cracking ability. DETAILED DESCRIPTION - Preparing copper metal glaze using graphene comprises (i) weighing 16.06 wt.% copper oxide, 45.82 wt.% potassium nitrate, and 38.12 wt.% quartz, and removing impurities from the above raw materials, (ii) placing quartz in a kiln for calcination and then finely grinding, and then mixing with water and potassium nitrate powder according to the ratio of raw materials, and wet-grinded using wet mill, and screening, (iii) placing the copper oxide powder in suitable container, adding water and mixing, (iv) adding specific amount of graphite powder into container containing concentrated sulfuric acid, concentrating potassium permanganate in sulfuric acid and oxidizing graphite powder to obtain brown carboxylic acid group at the edge and in a plane graphite flake mainly comprising phenolic hydroxy group and epoxy group, (v) ultrasonically oscillating the solution to obtain stable light brownish yellow single layer graphene oxide suspension, (vi) thoroughly mixing the copper oxide dispersion and the graphene oxide suspension, and then placing in ultrasonic oscillator for shaking, and sufficiently irradiating the mixture with far infrared rays for 24 hours to reduce graphene oxide to graphene and adhering on the surface of the copper oxide, and fully combining with copper oxide, (vii) adding potassium nitrate and quartz powder to the mixture, stirring and mixing, and adjusting the water content in the process to obtain glaze water, (viii) measuring the expansion coefficient of the glaze water using an expansion coefficient measuring instrument, (ix) appropriately adjusting the expansion coefficient of the glaze water according to the expansion coefficient of the blank, so that the expansion coefficient of the glaze water is less than the expansion coefficient of the green body, causing the glaze layer to peel off during cooling, or the expansion coefficient of the glaze water is larger than the expansion coefficient of the green body, resulting in cracking of the glaze layer during cooling, (x) testing and appropriately adjusting the pH of the glaze slurry and (xi) allowing to stand glaze water for a while.