▎ 摘　　要

NOVELTY - Rubber tire prepared by single-atom zinc material with ultra-low zinc content comprises sidewalls, treads, agricultural tires, motorcycle tires, automobile tires, semi-steel tires and all-steel tires. The rubber tire is single-atom zinc material, rubber, vulcanizing agent, accelerator, dispersant, softener, anti-aging agent and functional filler. The single-atom zinc material is carrier and transition metal, and the carrier is nano-calcium carbonate. The preparation method of the monoatomic zinc material comprises (1) subjecting the carrier to ball milling treatment to obtain carrier with a particle size ≤ 200 nm, (2) adding the support in the metal hydroxide aqueous solution of 1 mol/l, (3) mixing the carrier with the zinc metal salt solution with zinc ion content of 100-200 g/l, and ball milling the resulting material after drying, and (4) subjecting the solid powder to activation treatment. USE - The rubber tire is useful for vehicle or machine. ADVANTAGE - The rubber tire has excellent heat conducting performance, corrosion resistance, wear-resistant performance and anti-aging, and prolongs the service life, tear resistance performance, tensile strength performance, and durability. The method is simple, convenient for industrial mass production, pushes domestic industrial rubber product industry innovation, so that the industrial production is more environment-friendly and safe. The application of single-atom zinc material replaces 997 superior zinc oxide as rubber vulcanizing active agent in traditional medical rubber industry, the dosage of metal zinc can be reduced by 60-70%, greatly saves nonferrous metal zinc resource, reduces carbon emission caused by related smelting, at the same time, reduces the heavy metal residual pollution to the environment, and is easy to realize industrialization. DETAILED DESCRIPTION - Rubber tire prepared by single-atom zinc material with ultra-low zinc content comprises sidewalls, treads, agricultural tires, motorcycle tires, automobile tires, semi-steel tires and all-steel tires. The rubber tire is single-atom zinc material, rubber, vulcanizing agent, accelerator, dispersant, softener, anti-aging agent and functional filler. The single-atom zinc material is carrier and transition metal, and the carrier is nano-calcium carbonate. The transition metal is zinc. The transition metal is anchored on the defect site on the surface of the carrier in the form of single atom. The mass ratio of the transition metal contained in the monoatomic zinc material to the carrier is 1:5-1:10. The preparation method of the monoatomic zinc material comprises (1) subjecting the carrier to ball milling treatment to obtain carrier with a particle size ≤ 200 nm, (2) adding the support in the metal hydroxide aqueous solution of 1 mol/l, where the mass ratio of 11 mol/l metal hydroxide aqueous solution to the carrier is (1-1.2):1, rotating at 800-1000 revolutions per minute, heating up to 75-85℃, fully reacting for 35-40 hours, building sufficient defect sites on the surface of the carrier, filtering and drying, and grinding, (3) mixing the carrier with the zinc metal salt solution with zinc ion content of 100-200 g/l, where the mass ratio of the zinc metal salt solution and the carrier with zinc ion content of 100-200 g/l is 1:1, raising the temperature to 58-65℃, stirring thoroughly for 16-24 hours, removing the supernatant, centrifuging, and drying in blast drying oven at 100-120℃ for 10-14 hours, and ball milling the resulting material after drying, and (4) subjecting the solid powder to activation treatment, where the calcination temperature is 200-600℃, the heating rate is 2-5℃/minute, and the calcination time is 2-6 hours under argon atmosphere to obtain the target product.