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发明授权
CN105036798B 浸渍结合冷冻干燥技术制备多孔陶瓷的方法 有权

浸渍结合冷冻干燥技术制备多孔陶瓷的方法
摘要：
本发明公开了浸渍结合冷冻干燥技术制备多孔陶瓷的方法,具体为：1)制备浸渍用浆料T1和冷冻干燥用浆料T2；2)用浆料T1浸渍海绵制备多孔支架；3)浆料T2浸渍多孔支架结合冷冻制备多孔陶瓷冻结体；4)对多孔陶瓷冻结体冷冻、干燥、烧结，得到多孔陶瓷。本发明在冷冻干燥致孔技术的基础上，将浸渍技术和冷冻干燥工艺相结合，最后经过烧结，得到具有高强度、高通孔孔隙率的多孔陶瓷，且孔尺寸、方向可控，解决了现有技术制备的多孔陶瓷强度不佳，多孔陶瓷孔不可控以及通孔孔隙率不高的问题，对于获得高强度、高通孔孔隙率以及孔可控多孔陶瓷材料具有重要的价值。
摘要（英）：

The invention discloses a method for preparing porous ceramic by impregnation combining a freeze-drying technology, which comprises the following steps: 1) preparing slurry T1 for impregnation and slurry T2 for freeze-drying; 2) using the slurry T1 to impregnate a sponge and to prepare a porous scaffold; 3) using the slurry T2 to impregnate the porous scaffold and combing freezing to prepare a porous ceramic frozen body; 4) freezing, drying and sintering the porous ceramic frozen body to obtain the porous ceramic. According to the method for preparing the porous ceramic by the impregnation combining the freeze-drying technology, the impregnation technology and the freeze-drying process are combined on the basis of a freeze-drying and hole-forming technology, the porous ceramic with high strength and high porosity of through holes is obtained through sintering, and the size and the direction of each through hole are controllable, the problems that the porous ceramic prepared by the existing technology is poor in the ceramic strength, the porous ceramic is not controllable and the porosity of the through holes is low are solved, the method for preparing the porous ceramic has important value for obtaining the porous ceramic material with high strength, high porosity of the through holes and controllable holes.

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