▎ 摘　　要

NOVELTY - 3D-printing material comprises 2-6 pts. wt. starch, 15-30 pts. wt. straw, 2-5 pts. wt. coconut shell, 10-24 pts. wt. graphene, 18-34 pts. wt. resin, 3-8 pts. wt. calcium carbonate powder, 1-2 pts. wt. lysine, 4-8 pts. wt. titanium dioxide, 5-12 pts. wt. stearic acid, 2-6 pts. wt. plant oil, 5-10 pts. wt. slag, 0.5-2 pts. wt. antioxidant, and 2-5 pts. wt. coupling agent. USE - 3D-printing material. ADVANTAGE - The material has wide raw material source, simple preparation process, good biological decomposition rate and light degradation of product, and wide market prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of 3D-printing material comprising crushing graphene, adding into sulfuric acid, stirring for 5-8 hours at 60-70 degrees C, diluting with distilled water, treating for 2-4 hours, carrying out dilution, washing with distilled water to neutral, and naturally airing to obtain modified graphene powder; adding straw, coconut shells, resin, titanium dioxide and slag into ball mill, adding ball milling medium to mixture at weight ratio of 5-8:1, and obtaining first mixture; and mixing first mixture, modified graphene powder, starch, calcium carbonate powder, lysine, stearic acid and plant oil, stirring, putting in reaction kettle, reacting at 70-85 degrees C for 6-10 hours, finishing reaction, cooling to 45-55 degrees C, adding antioxidant and coupling agent into extruder, heating, extruding and drying in vacuum.