This study presents a novel strategy to construct ceramic structures comprised of microporous filaments using photocurable ceramic/monomer feedstocks containing terpene crystals as sublimable porogens for UV curing-assisted 3D plotting technique. The biphasic calcium phosphate (BCP) feedstock, composed of frozen terpene crystals surrounded by BCP/UDMA walls, could be favorably extruded through a fine nozzle and then effectively photopolymerized by UV light. Thus, green filaments with high shape retention could be obtained. In addition, a number of pores could be created in BCP filaments after removing terpene crystals via freeze-drying and the porosity could be tailored by adjusting terpene content in BCP feedstocks. This approach allowed for the construction of dual-scale porous structures comprising microporous filaments in a periodic pattern, with tailored overall porosities and compressive strengths. Several types of self-supporting structures were also successfully constructed using our approach.

这项研究提出了一种新的策略来构建包含微孔长丝的陶瓷结构，使用含有萜烯晶体的可光固化陶瓷/单体原料作为可升华成孔剂进行UV固化辅助3D绘图技术。双相磷酸钙（BCP）原料由被BCP / UDMA壁包围的冷冻萜烯晶体组成，可以通过细喷嘴挤出，然后通过紫外线有效地光聚合。因此，可以获得具有高形状保持性的生丝。此外，通过冷冻干燥除去萜烯晶体后，在BCP长丝中可能会形成许多孔，并且可以通过调节BCP原料中的萜烯含量来调整孔隙率。这种方法允许构建包含周期性图案的微孔细丝的双尺度多孔结构，具有定制的整体孔隙率和抗压强度。使用我们的方法还成功地构建了几种类型的自支撑结构。