▎ 摘　　要

NOVELTY - Material with efficient dust removal function, comprises 40-60 pts. wt. modified polystyrene microspheres, 5-8 pts. wt. graphene oxide and 10-12 pts. wt. porous silica. The preparation of material comprises (i) mixing sodium chloride and hydroxymethyl cellulose, adding sodium carboxymethylcellulose and sodium chloride, stirring and mixing; (ii) mixing styrene with divinylbenzene, adding azobisisobutyronitrile and mixed pore-forming agent, stirring; (iii) mixing the mixture-A with mixture-B and ultrasonically dispersing, mixing the mixed dispersion and sulfur dispersion, adding methacryloyloxyethyltrimethylammonium chloride, stirring, reacting, filtering, extracting, filtering, washing and drying; (iv) mixing porous silica with graphene oxide, adding water, mixing, ultrasonically dispersing, mixing the mixed dispersion with mixture-C, ultrasonically dispersing, rotating and condensing, washing the concentrate and drying; and (v) performing index analysis on the product. USE - Used as material with efficient dust removal function. ADVANTAGE - The material has excellent dust-removing effect. DETAILED DESCRIPTION - Material with efficient dust removal function, comprises 40-60 pts. wt. modified polystyrene microspheres, 5-8 pts. wt. graphene oxide and 10-12 pts. wt. porous silica. The preparation of material comprises (i) mixing sodium chloride and hydroxymethyl cellulose in a mass ratio of 1: 1-2: 1, adding 0.1-0.3 times the mass of sodium carboxymethylcellulose and 8-10 times the mass of sodium chloride, stirring and mixing at 40-60 degrees C for 40-60 minutes at a speed of 280-360 revolutions/minute to obtain a mixture-A; (ii) taking 20-30 pts. wt. styrene, 8-12 pts. wt. divinylbenzene, 3-5 pts. wt. azobisisobutyronitrile and 40-60 pts. wt. mixed pore-forming agent, mixing styrene with divinylbenzene, adding azobisisobutyronitrile and mixed pore-forming agent, stirring and mixing at 45-65 degrees C for 30-80 minutes at a rotation speed of 300-360 revolutions/minute to obtain a mixture-B; (iii) mixing the mixture-A with mixture-B in a volume ratio of 3:1 and ultrasonically dispersing at a frequency of 45-55 kHz for 10-20 minutes to obtain mixed dispersion, mixing the mixed dispersion and sulfur dispersion at a mass ratio of 4:1-6:1, adding methacryloyloxyethyltrimethylammonium chloride with a mass of 0.1-0.3 times the mass of the mixed dispersion, stirring at a rotation speed of 300-350 revolutions/minute and reacting at 70-80 degrees C for 8-9 hours and filtering to obtain pretreated polystyrene microspheres, extracting the pretreated polystyrene microspheres by Soxhlet, filtering, washing and drying to obtain mixture-C; (iv) mixing 10-12 pts. wt. porous silica with 5-8 pts. wt. graphene oxide, adding 200-220 pts. wt. water, mixing at a frequency of 45-60 kHz and ultrasonically dispersing for 20-40 minutes to obtain a mixed dispersion, mixing the mixed dispersion with 40-60 pts. wt. mixture-C, ultrasonically dispersing at 60-80 degrees C for 50-100 minutes at a frequency of 45-55 kHz, rotating and condensing to a moisture content of 0.1-0.2% under the conditions of a rotation speed of 120-150 revolutions/minute and a pressure of 500-600 kPa, washing the concentrate and drying to obtain a product; and (v) performing index analysis on the product, where in the step (iii), sulfur dispersion is a mixture of polyvinylpyrrolidone and water in a mass ratio of 1:150-1: 200, adding polyvinylpyrrolidone 2-3 times of sodium thiosulfate, stirring and mixing to obtain a mixed dispersion of sodium thiosulfate, mixing sodium thiosulfate and hydrochloric acid in a volume ratio of 40:1-60:1, stirring, reacting and ultrasonically dispersing to obtain sulfur dispersion, in the step (ii), the mixed pore-foaming agent is prepared by mixing toluene and cyclohexanol in a mass ratio of 1: 2-1: 4, adding 2-3 times the mass of toluene and n-heptane, stirring and mixing and in the step (iv), the porous silica is prepared by mixing polyacrylamide gel and water in a mass ratio of 1:50-1:85, stirring, dissolving and freeze-drying to obtain a polyacrylamide porous gel, mixing polyacrylamide porous gel and ethyl orthosilicate in a mass ratio of 1:9, adding 60-70 times the mass of anhydrous ethanol, water with 3-4 times the mass of polyacrylamide and ammonia with 1-8 times the mass of polyacrylamide, filtering, allowing to stand and calcining to obtain porous silica.