▎ 摘　　要

NOVELTY - An environmentally-friendly banana stalk three dimensional printing material comprises banana stalk, polylactic acid, sodium tripolyphosphate, graphene, fatty alcohol polyoxyethylene ether ammonium sulfate, compound (A) and compound (B). The compound (A) contains KH550 (RTM: 3-aminopropyltriethoxysilane) coupling agent, fatty acid glyceride, modified polyacrylate, di (2-ethylhexyl) phthalate, pentaerythritol-tetrakis-( beta )-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate (antioxidant 1010) and polyaluminum chloride. USE - Environmentally-friendly banana stalk three dimensional printing material. ADVANTAGE - The environmentally-friendly banana stalk three dimensional printing material has excellent tensile strength and excellent breaking elongation rate. DETAILED DESCRIPTION - Environmentally-friendly banana stalk three dimensional printing material comprises 200 pts. wt. banana stalk, 71 pts. wt. polylactic acid, 50 pts. wt. sodium tripolyphosphate, 2 pts. wt. graphene, 0.6 pt. wt. fatty alcohol polyoxyethylene ether ammonium sulfate, 8 pts. wt. compound (A) and 5 pts. wt. compound (B). The compound (A) is composed of 10 pts. wt. acrylonitrile foam regulating agent, 6 pts. wt. aerosol generating agent, 5 pts. wt. KH550 (RTM: 3-aminopropyltriethoxysilane) coupling agent, 4 pts. wt. fatty acid glyceride, 6 pts. wt. modified polyacrylate, 4 pts. wt. di (2-ethylhexyl) phthalate, 5 pts. wt. pentaerythritol-tetrakis-( beta )-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate (antioxidant 1010) and 6 pts. wt. polyaluminum chloride. An INDEPENDENT CLAIM is included for preparation of environmentally-friendly banana stalk three dimensional printing material, which involves (S1) crushing selected banana straw, crushing, passing over 300 mesh sieve to obtain powder, drying at 105 degrees C for 2.2 hours, controlling water content at 0.7%, preparing banana stalk powder, (S2) adjusting magnetic field intensity of graphene at 6800 GS, ultrasonically processing at 600 W, heating at 55 degrees C, stirring at 300 rpm for 16 minutes, obtaining graphene material, (S3) adding grafted fatty alcohol polyoxyethylene ether sulfate to graphene material, heating at 76 degrees C, stirring at 150 rpm for 0.8 hour to obtain activated graphene powder, (S4) adding activated graphene powder to banana stalk powder, adding polylactic acid, sodium tripolyphosphate and compound (A), heating at 224 degrees C, stirring at 300 rpm for 2.5 hours, cooling to room temperature, obtaining banana stalk three dimensional printing primary material, adding acrylonitrile foam regulating agent to compound (A), mixing polyaluminum chloride, heating at 160 degrees C, stirring at 400 rpm for 142 minutes to obtain compound (B), mixing compound (B) with di (2-ethylhexyl) phthalate, cooling to 122 degrees C, stirring at 300 rpm for 60 minutes, (S5) pulverizing banana stalk three dimensional printed primary material at -115 degrees C, adding compound (B), mixing in screw extruder, heating at 205 degrees C, stirring at 115 rpm and squeezing to obtain final product. The preparation of compound (A) is carried out by adding aerosol generating agent, KH550 (RTM: 3-aminopropyltriethoxysilane) coupling agent, fatty acid glyceride, modified polyacrylate and pentaerythritol-tetrakis-( beta )-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate (antioxidant 1010), mixing at 130 degrees C, stirring at 200 rpm for 65 minutes.