Belonging to the field of additive manufacturing, the invention discloses a kaolin
slurry for
stereolithography apparatus and a preparation method thereof. The kaolin
slurry consists of the followingcomponents by
mass percentage: 40%-55% of kaolin
powder, 45%-60% of photosensitive resin and 0.4%-2% of a dispersant. The preparation method of the kaolin
slurry includes: (a) selecting calcined
coal-series kaolin
powder, the dispersant and photosensitive resin as the raw materials, pretreating the kaolin
powder to obtain
dry powder, dissolving the dispersant in the photosensitive resin to obtaina photosensitive premixed solution; and (b) dissolving the
dry powder in the photosensitive premixed solution, performing ball milling and mixing the substances evenly, and then conducting vacuum degassing to obtain the needed kaolin slurry. According to the invention, the obtained slurry has high
solid content and good stability, can be stored for a long term without deterioration after preparation, can be used for manufacturing complex and fine
ceramic parts, and has good application prospects in automobiles,
chemical industry,
sewage treatment and other industries.