▎ 摘　　要

NOVELTY - Graphene 3D printing material comprises e.g. 5-8 pts. wt. graphite, 26-32 pts. wt. waste plastic, 32-42 pts. wt. polylactic acid, 16-25 pts. wt. trimeric sodium phosphate, 20-26 pts. wt. butyl acetate, 12-20 pts. wt. special synthesized agent, 5-10 pts. wt. starch synthetic agent, where specific synthetic agent comprises 15-22 pts. wt. regulator, 12-18 pts. wt. generating agent, 10-15 pts. wt. a 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 - Used as graphene 3D printing material. ADVANTAGE - The material has large tensile strength, bending strength and notch impact strength, heat distortion temperature and high melt index, printed out by 3D printing technology, high impact resistance, high strength, and has wide market prospect. DETAILED DESCRIPTION - Graphene 3D printing material comprises 5-8 pts. wt. graphite, 26-32 pts. wt. waste plastic, 32-42 pts. wt. polylactic acid, 16-25 pts. wt. trimeric sodium phosphate, 20-26 pts. wt. butyl acetate, 12-20 pts. wt. special synthesized agent, 5-10 pts. wt. starch synthetic agent, where specific synthetic agent comprises 15-22 pts. wt. regulator, 12-18 pts. wt. generating agent, 10-15 pts. wt. a 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, 2-4 pts. wt. stabilizer, the starch synthesis agent comprises 80-130 pts. wt. starch, 10-16 pts. wt. dimethyl glutaric acid, 8-13 pts. wt. N, N-dimethyl acetamide, 2-5 pts. wt. epoxy chloropropane, 1.5-3.5 pts. wt. butane, 1-2 pts. wt. urea, gelatinizing agent, 0.2-0.6 pts. wt. coupling agent b, 0.1-0.2 pts. wt. initiator, 0.1-0.2 pts. wt. catalyst, 0.1-0.3 pts. wt. stabilizing agent, b, 0.3-0.8 pts. wt. antifoaming agent, 0.4 to -0.9 pts. wt. plasticizer b, 0.3-0.7 pts. wt. toughening agent, 0.3-0.6 pts. wt. tackifier, 0.2-0.4 pts. wt. waterproof agent, 0.1-0.2 pts. wt. antibacterial agent, coupling agent b is 2,5-dimethyl-2,5-bis (benzoylperoxy) -hexane, the initiator is azo di-iso butyric acid (ethylene glycol) ester, the catalyst is platinum catalyst, the stabilizing agent b is organic tin stabilizing agent, the antifoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether, the plasticizer b is citrate, the toughener is poly-propylene rubber, the tackifier is aminopropyl trimethoxy silane, the waterproof agent is boric acid, antibacterial agent is lithium carbonate, where the preparation method of the graphene 3D of printing material comprises (i) buying two-dimensional graphene material on the market, specially to obtain primary graphene powder, (ii) using hard plastic crusher for primarily crushing the waste plastic, using the waste plastic batch mixing plastic washer has broken to clean thoroughly, removing dirt on surface, drying naturally after selecting, selecting plastic, (iii) obtaining the selected plastic under nitrogen or dry ice low temperature crusher in, the temperature is - 90 to 110 degrees C, crushing the plastic 2-3 hours, sieving to obtain 400-600 meshes of plastic granules,(iv) adding primary alkene powder prepared by step (i), step (iii) to obtain the plastic granules adding polylactic acid, trimeric sodium phosphate, butyl acetate, specific synthesis agent, raising the temperature to 192-212 degrees C, at the rotating speed of 200-400 rotations/minute stirring for 2.5-3.5 hours, cooling to room temperature to obtain the modified graphene 3D print second-rate material, where the preparation method of the specific synthetic agent comprises (a) taking the generating agent, coupling agent a, compatibilizer, antioxidant are mixed heating up to 117-128 degrees C, at the rotating speed of 100- 200 rotations/minute and reacting for 68-82 minutes to obtain material A, (b) adding regulator to material A, mixing coagulant after heating up to 143-156 degrees C, rotating speed of 300-400 rotations/minute and reacting for 145-232 minute to obtain material B, (c) adding plasticizer to material B, terminating agent, stabilizing a mixing, reducing temperature to 108-125 degrees C, reacting for 62-135 minutes at the rotating speed of 200-300 rotations/minutes, preparing the special synthetic agent, (v) taking the step (iv) to obtain the modified graphene 3D printing secondary material temperature is -90 to 110 degrees C, crushing, adding starch synthesis agent uniformly, placing the uniformly mixed mixture into a screw extrusion molding machine, the temperature is 180-200 degrees C and the rotating speed is 110-130 rotations/minute, extruding strip to obtain graphene 3D printing material, preparation method of the starch synthesis agent comprises (a) preparing concentration is 18-25Be, pH value of 3.1-3.8 of starch slurry, (b) adding starch slurry to the step (a) , adding concentration is 4 -8 % of dimethyl glutarate, N, N-dimethyl acetamide, b of coupling agent, catalyst, temperature is 42-58 degrees C, stirring speed is 70-100 rotations/minute for cross linking and grafting reaction for 2.5-3.5 hours to obtain slurry b, (c) adding pasting agent slurry prepared in the step (b), adjusting pH value to 9.1-9.8, adding epoxy butane, urea, initiator, plasticizer b, plasticizer, tackifier, waterproof agent, antibacterial agent, temperature is 55-61 degrees C, stirring speed is 80-120 rotations/minute, linking reaction 1.2-1.8 hours, obtain slurry c, (d) adding to obtain slurry c stabilizing agent b, adjusting the pH value to 8.3-8.5, raising temperature to 73-77 degrees C and pasting for 50-55 minutes, reduced to 30-33 degrees C after pasting, adding de-foaming agent, stirring at rotating speed of 90-130 rotations/minute for 8-12 minutes to obtain the starch synthesis agent.