Abstract

The ceramic-based porous structures and components have received considerable attention in biomedical and biological fields. This paper presents a method by using digital light processing (DLP) 3D printing technology to fabricate polymer-derived SiC ceramic components with triply period minimal surface (TPMS) porous structure. The photosensitive preceramic polymer resin with low viscosity was prepared by dissolving polycarbosilane (PCS) into photosensitive resin and organic solvent, and its optimal resin composition are studied to print the TPMS structural green bodies. Then, five different types of TPMS structural SiC ceramic components with high porosity of 80% were successfully designed, printed and pyrolyzed at 600–1400 °C with uniform shrinkage. The fabricated porous SiC ceramic components almost have no deformation, damage, or obvious cracks on the surface. The weight loss, linear shrinkage, density, and mechanical properties of the TPMS SiC ceramic components with different pyrolysis temperatures were characterized. The results showed that the prepared TPMS SiC ceramic components exhibited high-resolution microstructure and excellent mechanical properties, which would have great application prospects in future tissue engineering and biological scaffolds.

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