▎ 摘　　要

NOVELTY - Composite material comprises banana straw, waste plastic, polylactic acid, potassium tripolyphosphate, graphene, triethanolamine soap, complexing agent (I) and complexing agent (II). The complexing agent (I) comprises ACR foam regulator, aerosol generating agent, KH-550 (RTM: gamma -Aminopropyltriethoxysilane), fatty acid triglyceride, modified polyacrylate, di(2-ethylhexyl)phthalate, pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) and polyaluminum chloride. USE - Composite material is useful for three-dimension printing application (claimed). ADVANTAGE - The composite material is environmentally-friendly, and has high performance. DETAILED DESCRIPTION - Composite material comprises 175 pts. wt. banana straw, 40 pts. wt. waste plastic, 74 pts. wt. polylactic acid, 52 pts. wt. potassium tripolyphosphate, 2 pts. wt. graphene, 0.6 pt. wt. triethanolamine soap, 8.4 pts. wt. complexing agent (I) and 5.6 pts. wt. complexing agent (II). The complexing agent (I) comprises 9 pts. wt. ACR foam regulator, 5 pts. wt. aerosol generating agent, 4 pts. wt. KH-550 (RTM: gamma -Aminopropyltriethoxysilane), 3 pts. wt. fatty acid triglyceride, 5.2 pts. wt. modified polyacrylate, 3 pts. wt. di(2-ethylhexyl)phthalate, 4 pts. wt. pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) and 5 pts. wt. polyaluminum chloride. The composite material is prepared by crushing the banana straw, sieving by a 300-mesh sieve to obtain powder, drying the powder at 103 degrees C for 2.8 hours until the moisture content is controlled to be 0.9% to obtain the banana straw powder, preliminarily crushing waste plastic using a hard plastic crusher, thoroughly cleaning the broken waste plastic using an intermittent stirring plastic cleaning machine for removing dirt on the surface, selecting plastic, naturally drying, placing the selected plastic in a low-temperature pulverizer under nitrogen or dry ice condition, crushing the plastic at -110 degrees C for 2 hours, sieving to obtain 200-mesh fine plastic particles, ultrasonically stirring graphene at a magnetic field of 5800 Gs, a power of 420 W, a temperature of 48 degrees C and a speed of 300 rpm for 28 minutes to obtain an energy graphene, adding triethanolamine soap to the energy graphene to carry out modification, activating at a temperature of 64 degrees C and a speed of 120 rpm for 1.2 hours to obtain activated graphene energy powder, adding fine plastic particles, activated graphene energy powder, polylactic acid, potassium tripolyphosphate and complexing agent (I) to the banana straw powder, heating the mixture at a temperature of 200 degrees C under stirring condition at 300 rpm for 4.3 hours, cooling to room temperature to obtain a three-dimensional printed primary material, crushing the three-dimensional printed primary material at -100 degrees C, adding the complexing agent (II), uniformly mixing, putting the mixed materials to a screw extrusion forming machine, and extruding at a temperature of 185 degrees C and a speed of 108 rpm to obtain the composite material. The complexing agent (I) is prepared by mixing aerosol generating agent, KH-550 (RTM: gamma -Aminopropyltriethoxysilane), fatty acid triglyceride, modified polyacrylate and pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate), heating the mixture at a temperature of 122 degrees C and a speed of 200 rpm for 65 minutes to obtain a material (i), adding ACR foam regulator and polyaluminum chloride to the material (i), heating the mixture at a temperature of 150 degrees C and a speed of 400 rpm for 180 minutes to obtain a material (ii), adding di(2-ethylhexyl)phthalate into the material (ii), mixing, cooling the mixture is cooled to 112 degrees C, and reacting at 300 rpm for 100 minutes to obtain the complexing agent (I).