PHOTOCURABLE MIXTURE FOR THE MANUFACTURE OF CERAMIC PRODUCTS BY STEREOLITHOGRAPHY WITH HIGH-TEMPERATURE POST-PROCESSING Russian patent published in 2023 - IPC C04B35/01 C04B35/18 C04B35/632 C08F2/46 B33Y10/00 B33Y70/10 

FIELD: stereolithography.

SUBSTANCE: photocurable preceramic mixtures for creating three-dimensional ceramic objects. The mixture includes photocurable organic and organosilicon components, fillers and radical polymerization initiators. Triethylene glycol dimethacrylate and bisphenol A-glycidyl methacrylate are used as photocurable organic components, oligomeric dimethylpolysiloxanes with average molecular weights ranging from 800 to 3000 Da are used as organosilicon components. As a filler, nanoparticles of SiO₂, Al₂O₃ZrO₂, AlN, hydroxyapatite or their mixtures with sizes from 30 to 150 nm are used. Such a composition makes it possible to achieve an improvement in the mechanical characteristics of objects: after annealing, the Vickers hardness is at least 800 HV, the tensile strength is at least 80 MPa.

EFFECT: shrinkage of the obtained objects of no more than 3%.

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