▎ 摘　　要

NOVELTY - A surface finishing additive comprises gypsum, activated carbon powder, sericite, jade powder, adsorbing deodorant, carbon nanotube-graphene composite, phosphate, and nano-silica, and is prepared by carbonizing the cut bamboo, oak and pine at 1000-1500 degrees C to obtain activated carbon, screening, separating, pulverizing to obtain activated carbon powder of 50-250 mesh, selecting a particle size in the range, graft-polymerizing the electronic beam and adsorbing deodorant, stirring carbon nanotube and graphene powder at 700 degrees C to obtain carbon nanotube-graphene composite. USE - Environmental-friendly surface finishing additive of surface finishing material composition for building. ADVANTAGE - The environmental-friendly surface finishing additive has excellent crack resistance, and dimensional stability, and high intensity. DETAILED DESCRIPTION - An environmental-friendly surface finishing additive comprises 40-80 pts. wt. gypsum, 5-35 pts. wt. activated carbon powder, 10-20 pts. wt. sericite, 2-10 pts. wt. jade powder having 300-500 mesh, 20-35 pts. wt. adsorbing deodorant, 0.1-2 pts. wt. carbon nanotube-graphene composite, 5-10 pts. wt. phosphate, and 0.1-2 pts. wt. nano-silica, and is prepared by cutting bamboo, oak and pine trees to length of 500-1000 mm, carbonizing the cut bamboo, oak and pine respectively at 1000-1500 degrees C to obtain activated carbon, screening each of the carbonized carbon, separating, pulverizing to obtain activated carbon powder of 50-250 mesh, selecting a particle size in the range, graft-polymerizing the electronic beam and adsorbing deodorant comprising diatomite, zeolite, absorber, light gel and alginic acid, stirring carbon nanotube and graphene powder in a rotary kiln at 700 degrees C to obtain carbon nanotube-graphene composite. The phosphate is potassium phosphate, dipotassium hydrogen phosphate, tripotassium phosphate, phosphate soda, dibasic sodium phosphate, sodium triphosphate, aluminum phosphate, zinc phosphate, ammonium polyphosphate, sodium hexa metaphosphate, calcium phosphate, dibasic calcium phosphate, or tribasic calcium phosphate.