▎ 摘　　要

NOVELTY - A graphene printing material comprises 5.5-7.6 pts. wt. graphene, 24.6-30.4 pts. wt. waste plastics, 34.2-38.2 pts. wt. polylactic acid, 11.6-22.7 pts. wt. potassium tripolyphosphat, 18.3-24.5 pts. wt. adipate, 9.2-17.3 pts. wt. specific synthetic agent, and 5.2-9.5 pts. wt. starch synthesis agent. The specific synthetic agent comprises 15-22 pts. wt. adjusting agent, 12-18 pts. wt. propellant, 10-15 pts. wt. coupling agent, 12-16 pts. wt. compatibilizer, 9-12 pts. wt. plasticizer, 6-10 pts. wt. antioxidant, 5-9 pts. wt. coagulant, 3-5 pts. wt. terminating agent and 2-4 pts. wt. stabilizer. USE - Graphene printing material used for three-dimensional printing. ADVANTAGE - The material has high quality, large tensile strength, bending strength and notch impact strength, heat distortion temperature, and high melt index. DETAILED DESCRIPTION - A graphene printing material comprises 5.5-7.6 pts. wt. graphene, 24.6-30.4 pts. wt. waste plastics, 34.2-38.2 pts. wt. polylactic acid, 11.6-22.7 pts. wt. potassium tripolyphosphat, 18.3-24.5 pts. wt. adipate, 9.2-17.3 pts. wt. specific synthetic agent, and 5.2-9.5 pts. wt. starch synthesis agent. The specific synthetic agent comprises 15-22 pts. wt. adjusting agent, 12-18 pts. wt. propellant, 10-15 pts. wt. coupling agent, 12-16 pts. wt. compatibilizer, 9-12 pts. wt. plasticizer, 6-10 pts. wt. antioxidant, 5-9 pts. wt. coagulant, 3-5 pts. wt. terminating agent and 2-4 pts. wt. stabilizer. The starch synthesis agent comprises 80-130 pts. wt. starch, 10-16 pts. wt.dimethyl glutarate, 8-13 pts. wt. N,N-dimethylacetamide, 2-5 pts. wt. epichlorohydrin, 1.5-3.5 pts. wt. urea, 1-2 pts. wt. pasteurizing agent, 0.2-0.6 pt. wt. coupling agent, 0.1-0.2 pt. wt. initiator, 0.1-0.2 pt. wt. catalyst, 0.1-0.3 pt. wt. stabilizer b, 0.3-0.8 pt. wt. defoamer, 0.4-0.9 pt. wt. plasticizer b, 0.3-0.7 pt. wt. toughening agent, 0.3-0.6 pt. wt. tackifier, 0.2-0.4 pt. wt. water resistant agent and 0.1-0.2 pt. wt. antibacterial agent. The coupling agent b is titanate coupling agent. The initiator is azobisisobutyric acid(ethyleneglycol)ester. The catalyst is platinum catalyst. The stabilizer b is organotin stabilizer. The defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether. The plasticizer b is bis(2-ethylhexyl) phthalate. The toughening agent is polypropylene rubber. The tackifier is propyltrimethoxysilane. The water-resistant agent is boric acid. The antimicrobial agent is lithium carbonate. The graphene printing material is prepared by purchasing two-dimensional graphene raw materials on market, and performing special treatment to obtain primary graphene powder; crushing waste plastic using hard plastic crusher after cleaning and removing dirt on surface, and naturally drying; placing selected plastic in low-temperature pulverizer with nitrogen or dry ice, and pulverizing at - 90-110 degrees C for 2-3 hours, and sieving to get 400-600 mesh plastic fine particles; mixing primary graphene powder and plastic fine particles, adding polylactic acid, potassium tripolyphosphate, adipate and specific synthetic agent, heating to 196-225 degrees C, stirring at 200-400 revolutions/minute for 2-3.3 hours, and cooling to room temperature; and pulverizing at - 90-110 degrees C, adding starch synthesis agent to mixture, mixing and homogenizing, placing in screw extruder, and extruding at 180-200 degrees C and 110-130 revolutions/minute.