▎ 摘　　要

NOVELTY - Preparing high-magnetic antibacterial nano-ferric oxide acrylic resin, involves (a) adding water and ferric oxyhydroxide to a reaction kettle, adding poly(diallyldimethylammonium chloride) to obtain poly(diallyldimethylammonium chloride)-treated ferric oxyhydroxide nanoparticle slurry, (b) processing the slurry, (c) spray-embedding the slurry using graphene, and drying to obtain double-layer core-shell embedded ferric oxyhydroxide nanoparticles, (d) adding hydroxyl-containing acrylic monomer, carboxyl acrylate, hydroxy acrylate, hydroxypropyl acrylate, VA-044 initiator and alpha -(t-butylperoxymethyl) styrene chain transfer agent mixture to the reactor, and heat-preserving to prepare an acrylic resin system, (e) adding the double-layer core-shell nanoparticles to resin system, adding VA-044 initiator and alpha -(t-butylperoxymethyl) styrene chain transfer agent, and reacting to obtain an acrylic resin material, and (f) treating the material in a magnetic field, filtering, and cooling. USE - The method is useful for preparing high-magnetic antibacterial nano-ferric oxide acrylic resin used in automotive coatings (claimed). ADVANTAGE - The method effectively prevents the agglomeration of ferric oxide, increases specific surface area, and ensures nano-ferric oxide uniformly distributed on the surface of the acrylic resin coating, and effectively improves the flexibility and adhesion of the acrylic resin during film formation, improves impact resistance, and improves photocatalytic sterilization efficiency. DETAILED DESCRIPTION - Preparing high-magnetic antibacterial nano-ferric oxide acrylic resin, involves (a) adding 90-95 pts. wt. water and 2-3 pts. wt. ferric oxyhydroxide to a reaction kettle at one time, ultrasonically dispersing for 15-20 minutes at 600-800 W, adding 50 pts. wt. poly(diallyldimethylammonium chloride), and continuously stirring for 3 hours to obtain poly(diallyldimethylammonium chloride)-treated ferric oxyhydroxide nanoparticle slurry, (b) processing the nanoparticle slurry by a dynamic ultra-high pressure microjet technology, where the processing pressure is 160-180 MPa, and the number of treatments is 3-4 times, and the temperature is normal temperature to obtain a highly dispersed ferric oxyhydroxide nanoparticle slurry, (c) spray-embedding the prepared slurry using 3 %mass graphene, spraying the graphene in one step, where the spray flow rate is 20 ml/minute, and the concentration of the nanoparticle slurry is 2 %mass, and the spray is 5 %mass amino acid, and has a spray flow rate of 20 ml/minute, drying with hot air at 180 degrees C to obtain ferric oxyhydroxide nanoparticles embedded in a double-layer core-shell, (d) adding 40-50 pts. wt. hydroxyl-containing acrylic monomer, 20-30 pts. wt. carboxyl acrylate, 10-20 pts. wt. hydroxy acrylate, 10-20 pts. wt. hydroxypropyl acrylate, VA-044 initiator and 0.7 pt. wt. alpha -(tbutylperoxymethyl) styrene chain transfer agent mixture to the reactor, heating at 100 degrees C, and heat-preserving for 10-20 minutes at high-speed dispersion state to prepare an acrylic resin system, (e) adding 3-5 pts. wt. double-layer core-shell embedded ferric oxyhydroxide nanoparticles to 95-97 pts. wt. acrylic resin system, adding 0.3 pt. wt. VA-044 initiator and 0.7 pt. wt. alpha -(t-butylperoxymethyl) styrene chain transfer agent, and reacting at 60-75 degrees C for 60-120 minutes to obtain an antibacterial nano-ferric oxide acrylic resin material, and (f) treating the obtained material in a strong magnetic field of 2-3 T for 60-120 minutes, heat-preserving at 40-50 degrees C, filtering the material, and cooling to obtain the acrylic resin.