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Controllable-morphology high-porosity porous ceramic membrane supporting body and preparation method thereof
The invention relates to a controllable-morphology high-porosity porous ceramic membrane supporting body and a preparation method thereof. Electrostatic spinning is used for preparation of a ceramic material/polymer micro/nano composite fiber, and a new method for directly sintering a composite fibrofelt into ceramics is used for preparation of the controllable-morphology high-porosity porous ceramic membrane supporting body. Compared with a method for construction and preparation of high-penetration ceramic supporting body by using a ceramic fiber, the preparation method has no need of secondary sintering, the process flow can be simplified, energy consumption can be saved, and moreover, the shape and micro-morphology of the supporting body can be controlled. By regulating electrostatic spinning parameters, the diameter of the composite fiber can be controlled to be nano or micron level and the fiber stacking density can be controlled, so as to control the microstructure of the ceramic membrane supporting body, and thus the pore size and porosity of the supporting body can be controlled. With use of the new preparation route, the high-porosity porous ceramic membrane supporting body having the pore size of 0.1-10 [mu]m, the porosity of 50-85% and the pure water flux of 1700-2500 L/m<2>.h under the pressure of 0.5 bar is obtained.
Controllable-morphology high-porosity porous ceramic membrane supporting body and preparation method thereof
The invention relates to a controllable-morphology high-porosity porous ceramic membrane supporting body and a preparation method thereof. Electrostatic spinning is used for preparation of a ceramic material/polymer micro/nano composite fiber, and a new method for directly sintering a composite fibrofelt into ceramics is used for preparation of the controllable-morphology high-porosity porous ceramic membrane supporting body. Compared with a method for construction and preparation of high-penetration ceramic supporting body by using a ceramic fiber, the preparation method has no need of secondary sintering, the process flow can be simplified, energy consumption can be saved, and moreover, the shape and micro-morphology of the supporting body can be controlled. By regulating electrostatic spinning parameters, the diameter of the composite fiber can be controlled to be nano or micron level and the fiber stacking density can be controlled, so as to control the microstructure of the ceramic membrane supporting body, and thus the pore size and porosity of the supporting body can be controlled. With use of the new preparation route, the high-porosity porous ceramic membrane supporting body having the pore size of 0.1-10 [mu]m, the porosity of 50-85% and the pure water flux of 1700-2500 L/m<2>.h under the pressure of 0.5 bar is obtained.
Controllable-morphology high-porosity porous ceramic membrane supporting body and preparation method thereof
ZHANG LI (author) / ZHANG ZHEMING (author) / WU JINGSHEN (author) / ZENG JIAYING (author) / CHEN HAIBIN (author)
2015-07-15
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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