▎ 摘　　要

NOVELTY - Preparation of alumina ceramics by submerged digital light processing light-curing three-dimensional printing involves mixing alumina powder, dispersant (A) and organic solvent, drying, grinding and sieving to obtain modified alumina powder, adding graphene, dispersant (B) and defoamer to acrylic photosensitive resin, adding modified alumina powder, ball milling, and defoaming to obtain alumina ceramic paste, subjecting alumina ceramic paste to submerged digital light processing photo-curing printing method to obtain alumina ceramic blank, subjecting to sectional process degreasing treatment to obtain degreased blank, heating and sintering. USE - Preparation of alumina ceramics by submerged digital light processing light-curing three-dimensional printing used in high-tech and cutting-edge industry such as microelectronic, nuclear reactor, aerospace, magnetic fluid power generation, dentistry and bone-healing applied medicine. ADVANTAGE - The preparation method is simple and produces large-size alumina ceramic component with high printing efficiency, strong adaptability to high viscosity slurry, high product success rate, low deformation, high precision and complex structure, less microscopic defect, high density, and excellent mechanical and physical property, and is suitable for industrial production.