▎ 摘　　要

NOVELTY - Infrared reflecting cobalt green pigment comprises No.1 cobalt green pigment comprising hollow glass microspheres and cobalt green pigment layer loaded on the surface of the hollow glass microspheres, and No.2 cobalt green pigment comprising graphene oxide and cobalt green pigment layer loaded between the graphene oxide layers. The D50 of the hollow glass microspheres is 10-15 µm. The D50 of the graphene oxide is 1-3 µm. The mass ratio of the No.1 cobalt green pigment to the No.2 cobalt green pigment is 1:3-1:5. USE - Used as infrared reflecting cobalt green pigment. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the pigment, comprising preparing cobalt sulfate solution, zinc sulfate solution and chromium nitrate solution according to the molar ratio of cobalt, zinc and chromium is 0.5-1:0.1-0.3:1.5-2, uniformly mixing the three to obtain mixed solution, mixing the mixed solution and polyethylene glycol in mass ratio of 5:1-10:1 and pouring into the reactor, adding the mass fraction of 30-50% of the mixed solution quality again and be 10-20% sodium carbonate solution and the hollow glass microspheres of 1-1.5 times of the mixed solution quality, filtering after the hydrothermal reaction, washing and drying, calcining at high temperature, cooling, discharging to obtain No.1 cobalt green pigment, mixing the mixed solution and nano-styrene-acrylic emulsion in a mass ratio of 5:1-10:1 and pouring into the reaction kettle, adding graphene oxide with mass ratio of 60-80% of the mixed solution, adding the sodium carbonate solution with mass fraction of 30-50% of the mixed solution mass fraction of 10-20% after the ultrasonic dispersion is uniform, suction filtering after the hydrothermal reaction, washing and drying, calcining at high temperature under the protection of inert gas, cooling, discharging to obtain No.2 cobalt green pigment, uniformly mixing the obtained No.1 cobalt green pigment and No.2 cobalt green pigment according to the mass ratio of 1:3-1:5 to obtain the product.