Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing porous ceramic by impregnation combining freeze-drying technology
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.
Method for preparing porous ceramic by impregnation combining freeze-drying technology
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.
Method for preparing porous ceramic by impregnation combining freeze-drying technology
ZHAO KANG (Autor:in) / WU CONG (Autor:in) / TANG YUFEI (Autor:in) / QIU SHA (Autor:in)
11.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Method for preparing porous ceramic by vibration freeze-drying technology
| Europäisches Patentamt | 2024
Method for preparing porous ceramic green body by combining microemulsion with freeze drying
| Europäisches Patentamt | 2020
Preparation method of ceramic core coating based on impregnation and freeze-drying technologies
| Europäisches Patentamt | 2020
Process for preparing porous ceramic by organic foam impregnation method
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2023