▎ 摘　　要

NOVELTY - A magnetic adsorption effect glass brick comprises 100 pts. wt. three-dimensional graphene hollow spheres, 70 pts. wt. modified graphene hollow spheres and 84 pts. wt. quartz glass. The magnetic adsorption effect glass brick is prepared by crushing modified glass sand, adding obtained material (M4) to a flask, adding ethylene glycol monomethyl ether, stirring, adding ethanolamine, continuously stirring, aging obtained clear liquid to obtain glass sand gel, adding the three-dimensional graphene hollow spheres to a mold, pouring the glass sand gel, closing the mold, pressurizing the interior, filling the three-dimensional graphene hollow spheres to a saturated state under the action of pressure, curing with hot air to obtain modified graphene hollow spheres, heating and melting the quartz glass, adding the modified graphene hollow spheres to the molten glass, uniformly dispersing, pressing obtained material (M5), shaping, air-cooling, and solidifying. USE - Magnetic adsorption effect glass brick is used for building decorative material. ADVANTAGE - The glass brick with magnetic adsorption effect has excellent anti-pressure ability and service life. DETAILED DESCRIPTION - A magnetic adsorption effect glass brick comprises 100 pts. wt. three-dimensional graphene hollow spheres, 70 pts. wt. modified graphene hollow spheres and 84 pts. wt. quartz glass. The magnetic adsorption effect glass brick is prepared by crushing modified glass sand to 0.01 by a ball mill to obtain a material (M4), adding the material (M4) to a flask, adding ethylene glycol monomethyl ether, stirring at 60℃ for 30 minutes using a constant temperature stirrer, adding ethanolamine, continuously stirring at 500 rpm for 1 hour, aging obtained clear liquid at room temperature for 20 hours to obtain glass sand gel, adding the three-dimensional graphene hollow spheres to a mold, pouring the glass sand gel, closing the mold, pressurizing to 2 MPa, filling the three-dimensional graphene hollow spheres to a saturated state under the action of pressure, curing with hot air at 50℃ to obtain modified graphene hollow spheres, heating and melting the quartz glass at 1600℃, adding the modified graphene hollow spheres to the molten glass, uniformly dispersing the modified graphene hollow spheres by repeatedly kneading to obtain material (M5), pressing the material (M5), shaping, air-cooling at cooling capacity of 770 kW, and solidifying. The mass ratio of modified graphene hollow spheres and quartz glass is 1:1.2. The three-dimensional graphene hollow spheres are prepared by dispersing spherical polymethyl methacrylate in deionized water, adding three-dimensional graphene oxide particles, stirring in a magnetic stirrer for 1 hour, performing suction filtration, drying with warm air at 55℃ for 20 minutes to constant weight to obtain pretreated particles, soaking the pretreated particles in 37 %mass polyaniline-methylpyrrolidone solution, drying with warm air at 55℃ for 20 minutes to a constant weight to obtain material (M1), immersing the material (M1) in 3 mol/L hydrochloric acid solution at 90℃, stirring in the magnetic stirrer for 3 minutes, washing with deionized water until the washing liquid is neutral, drying for 20 minutes to obtain material (M2), dispersing the material (M2) in deionized water, adding hydrazine hydrate under the condition of magnetic stirring, stirring until the upper layer of the reaction system is clear, washing obtained product with deionized water until the washing solution is neutral, and freeze-drying at -35℃. The mass ratio of spherical polymethyl methacrylate, deionized water and three-dimensional graphene oxide particles is 1:4:2.7. The magnetic stirring process is performed at speed of 800 rpm. The mass ratio of pretreated particles and polyaniline-methylpyrrolidone solution is 1:4. The mass ratio of material (M1) and hydrochloric acid solution is 1:4. The mass ratio of material (M2), deionized water and hydrazine hydrate is 1:3:0.6. The three-dimensional graphene oxide particles are prepared by preparing graphene oxide into graphene dispersion liquid (A) with concentration of 20 mg/ml, ultrasonically dispersing, diluting into dispersion liquid (B) with concentration of 10 mg/ml, pouring the dispersion liquid (B) into a freeze-drying mold, adjusting a freeze-drying machine to the freezing mode, cooling, freezing at -45℃ for 4 hours, adjusting the freeze-drying machine to the drying mode, vacuuming, setting vacuum degree to 1 Pa, heating the mold at 1℃/hour to 30℃, heat-preserving for 24 hours, cooling to obtain three-dimensional mesh-type graphene oxide sponge, and ball-milling the three-dimensional mesh-type graphene oxide sponge using 22 %mass acetone solution as grinding additive solvent in a star-shaped ball mill with ball-to-material ratio of 5:3. The mass ratio of three-dimensional mesh-type graphene oxide sponge and acetone solution is 1:0.4. The particle size of three-dimensional graphene oxide particles is 700 nm. The modified glass sand is prepared by sieving glass sand using 0.5 mm sieve, cleaning with deionized water, soaking in 1 mol/L hydrochloric acid solution for 20 hours, washing with deionized water until the washing solution is neutral, drying at 100℃ in an oven, naturally cooling to room temperature to obtain a material (M3), immersing the material (M3) in 45 %mass ferric chloride hexahydrate solution, adding 1.7 mol/L sodium hydroxide solution, heating to 80℃, stirring at 800 rpm, reacting for 10 minutes, carrying out initial precipitation reaction for 3 hours, washing obtained precipitate 3 times with deionized water, drying with warm air at 45℃ for 1 hour to obtain pretreated glass sand, performing secondary precipitation on the pretreated glass sand, washing obtained precipitate 3 times with deionized water, drying to obtain pre-modified glass sand, placing the pre-modified glass sand in a crucible, placing the crucible in a muffle furnace, calcining at 450℃ for 2 hours, and cooling to room temperature by quenching method using -30℃ ethanol solution as coolant. The mass ratio of glass sand and hydrochloric acid solution is 1:3. The mass ratio of material (M3), ferric chloride hexahydrate and sodium hydroxide solution is 1:2.4:0.7. The mass ratio of pretreated glass sand, ferric chloride hexahydrate solution and sodium hydroxide solution is 1:2:0.5. The mass ratio of material (M4), ethylene glycol monomethyl ether and ethanolamine is 1.5:1.2:1.2. The mass ratio of three-dimensional graphene hollow spheres and glass sand gel is 1:2.3.