▎ 摘　　要

NOVELTY - Graphene-modified mosquito-repellent non-luminous three dimentional printing magnetic material comprises 40-50 pts. wt. polylactic acid, 20-25 pts. wt. bulk acrylonitrile butadiene styrene (ABS), 10-20 pts. wt. ABS emulsion, 5-10 pts. wt. styrene-acrylonitrile-glycidylmethacrylate copolymer, 0.01-0.05 pts. wt. butyltriphenylphosphonium bromide, 5-10 pts. wt. compound filler, 15-30 pts. wt. magnetic composite material, 1-3 pts. wt. functional materials, graphene quantum dots and porous graphene. USE - Used as graphene-modified mosquito-repellent non-luminous three dimentional printing magnetic material. ADVANTAGE - The magnetic material has excellent mechanical and magnetic properties of electrical properties, and mosquito repellent effect and luminous performance. DETAILED DESCRIPTION - Graphene-modified mosquito-repellent non-luminous three dimentional printing magnetic material comprises 40-50 pts. wt. polylactic acid, 20-25 pts. wt. bulk acrylonitrile butadiene styrene (ABS), 10-20 pts. wt. ABS emulsion, 5-10 pts. wt. of styrene-acrylonitrile-glycidylmethacrylate copolymer, 0.01-0.05 pts. wt. butyltriphenylphosphonium bromide, 5-10 pts. wt. of compound filler, 15-30 pts. wt. of magnetic composite material, 1-3 Z functional materials, graphene quantum dots and porous graphene, the magnetic composite material is composed of graphene/iron oxide powder and multi-walled carbon nanotube/neodymium iron boron powder in a weight ratio of 3:2, the composite filler is composed of graphene/silicon dioxide composite filler and graphene/calcium carbonate composite filler in a weight ratio of 3:1, the functional material is composed of graphene/silicon dioxide/phosphor composite material and insect repellent particles in a weight ratio of 2:1, the graphene quantum dots comprise 0.5-1 wt.% polylactic acid, the porous graphene is 0.1-2 wt.% the total weight of the ABS. The preparation of graphene-modified mosquito-repellent non-luminous three dimentional printing magnetic material comprising (i) pulverizing polylactic acid raw material into a 300 mesh powder, dispersing in pure water, ultrasonicating for 1 hour, then microwave irradiating for 1 hour under ultrasound, washing, discharge, and drying to obtain pre-polylactic acid, (ii) dispersing composite filler by ultrasonic stirring in pure water to obtain composite filler solution, heating, dissolving half of the pretreated polylactic acid in organic solvent to obtain polylactic acid solution, one divided into two parts, the second part of polylactic acid solution, mixing polylactic acid solution using high-speed ultrasonic, dropwise adding compound filler solution, agitating for 30-60 minutes by ultrasonic, then dropwise adding the second part of polylactic acid solution, and ultrasonic stirring for 30-60 minutes, dropwise adding graphene quantum dots solution, stirring the mixture for 30-60 minutes to obtain filler polylactic acid mixture liquid, adding filler polylactic acid mixture into storage tank of the spray dryer, spraying the filler polylactic acid mixture liquid using a spray drier at speed of 200-300 ml/minute, and drying to obtain poly(lactic acid) (PLA)/filler masterbatch, (iii) ultrasonically stirring magnetic composite material and dispersing in pure water to obtain magnetic composite solution, dissolving the other half of pretreated polylactic acid in organic solvent by heating to obtain polylactic acid solution, the third part is divided into two parts, taking the fourth part of polylactic acid solution, high-speed ultrasonic mixing third part of polylactic acid solution, dropwise adding the magnetic composite solution, and agitating the mixture for 30-60 minutes, then dropwise adding the fourth part of polylactic acid solution, and ultrasonic stirring for 30-60 minutes, then dropwise adding graphene quantum dots solution, stirring the mixture for 30-60 minutes to obtain magnetic powder polylactic acid mixture liquid, passing the magnetic powder polylactic acid mixture liquid into the storage tank, spraying the magnetic powder polylactic acid mixture liquid using spray dryer at speed of 200-300 ml/minute, and drying to obtain poly(lactic acid)/magnetic powder masterbatch, (iv) at room temperature under speed of 1000-1500 revolution/minute, adding bulk of ABS into the container, then adding emulsion ABS, functional materials and porous graphene, high-speed mixing for 30-60 minutes, adding the resulting mixture into a rotary nozzle spray drier for spray drying, where inlet temperature is 185 degrees C, and rapidly cooling spray-dried outlet to obtain graphene-modified ABS/ unctional masterbatch, and (v) adding PLA/filler masterbatch, PLA/magnetic powder masterbatch and graphene modified ABS/functional masterbatch, styrene-acrylonitrile-glycidylmethacrylate copolymer, butyltriphenylphosphonium bromide, melt-blending by a twin-screw extruder at 185 degrees C, adding continuous ABS/PLA alloy with magnetic properties to obtain final product.