▎ 摘　　要

NOVELTY - High tensile strength material comprises 96-158 pts. wt. banana straw, 28-36 pts. wt. kaolin, 62-78 pts. wt. polylactic acid, 24-35 pts. wt. potassium tripolyphosphate, 1.2-2 pts. wt. graphene, 6-10 pts. wt. fatty alcohol polyoxyethylene ether ammonium sulfate, 0.5-0.8 pts. wt. triethanolamine oleate, 4.5-8.7 pts. wt. complex I and 3.6-6.2 pts. wt. complex II. The complex I comprises e.g. 1.6-3.5 pts. wt. glycidyl methacrylate, 4.5-6.2 pts. wt. modified polyacrylate, 2.2-4 pts. wt. di (2-ethylhexyl) phthalate, 2-4 pts. wt. antioxidant 1076 and 3.2-5.6 pts. wt. coupling agent kh-550. USE - The high tensile strength material is useful in the 3d printing (claimed). ADVANTAGE - The material: can fully recycles the banana stalk and kaolin, and improves added value of banana stalks and kaolin. DETAILED DESCRIPTION - High tensile strength material comprises 96-158 pts. wt. banana straw, 28-36 pts. wt. kaolin, 62-78 pts. wt. polylactic acid, 24-35 pts. wt. potassium tripolyphosphate, 1.2-2 pts. wt. graphene, 6-10 pts. wt. fatty alcohol polyoxyethylene ether ammonium sulfate, 0.5-0.8 pts. wt. triethanolamine oleate, 4.5-8.7 pts. wt. complex I and 3.6-6.2 pts. wt. complex II. The complex I comprises 1.6-3.5 pts. wt. glycidyl methacrylate, 4.5-6.2 pts. wt. modified polyacrylate, 2.2-4 pts. wt. di (2-ethylhexyl) phthalate, 2-4 pts. wt. antioxidant 1076, 4.3-6.3 pts. wt. polyaluminum chloride, 3-5 pts. wt. ACR foam regulator, 2-4 pts. wt. aerosol generating agent and 3.2-5.6 pts. wt. coupling agent kh-550. The complex II comprises 150-182 pts. wt. tapioca starch, 18-22 pts. wt. dimethyl phosphite, 6-10 pts. wt. N-ethyl-5-methyl-2-(1-methylethyl) cyclohexanecarboxamide, 7-10 pts. wt. epibromohydrin, 1.8-4.2 pts. wt. carbamide, 1.6-3 pts. wt. potassium hydroxide, 1.6-3 pts. wt. potassium hydroxide, 0.7-0.9 pts. wt. aluminum titanium composite coupling agent, 0.2-0.3 pts. wt. azobisisobutyric acid (ethylene glycol) acrylate, 0.3-0.5 pts. wt. vanadium pentoxide, 0.4-0.6 pts. wt. stearic acid file, 0.4-0.7 pts. wt. polydimethylsiloxane, 0.8-1.2 pts. wt. dibutyl phthalate, 0.8-1 pts. wt. methyl methacrylate-butadiene-styrene terpolymer, 0.6-0.8 modified rosin resin, 0.5-0.7 pts. wt. boric acid and 0.2-0.4 pts. wt. ammonium dihydrogen phosphate. The high tensile strength material is prepared by (i) taking banana straw, crushing and sieving through 200-300 mesh sieve to obtain powder, drying the powder at 100-105 degrees C for 2.23.5 hours, controlling the moisture content below 1% to obtain banana stalk powder, (ii) using the pH of 8.7-10.8, grinding the kaolin with moisture content below 3% through 200-300 meshes sieve to obtain kaolin powder, using fatty alcohol polyoxyethylene ether sulfate modified to obtain modified kaolin, (iii) using graphene in the magnetic field strength of 5200-6800 GS, ultrasonic power is 240-600 W, temperature at 40-55 degrees C, speed is 200-300/minutes and stirring for 16-40 minutes to obtain graphene, (iv) adding triethanolamine oleate into the energy graphene obtained in the step (iii) for modification, at temperature of 52-76 degrees C, speed is 60-150 revolution/minute (rpm) and activating for 0.8-1.7 hours to obtain activated graphene energy powder, (v) taking the banana stalk powder obtained in the step (i) and modified kaolin obtained in the step (ii), taking the activated graphene energy powder obtained in the step (iv), adding polylactic acid, potassium tripolyphosphate, complex I, heating at 180-225 degrees C, stirring at speed of 200-300 rpm for 2.8-3.3 hours and cooling to room temperature to obtain 3D printed primary material, (vi) taking the 3D printed primary material obtained in the step (v), pulverizing at temperature of -92 degrees C to -155 degrees C, adding complex II, mixing the mixture into a screw extruder, at temperature of 168-205 degrees C, speed is 108-115 rpm and extruding strip to obtain high tensile strength material.