Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Freeze-molded high-porosity ceramic membrane support and preparation method thereof
The invention discloses a freeze-formed high-porosity ceramic membrane support and a preparation method thereof, and relates to the technical field of ceramic membranes, slurry raw materials are put into a ball mill for ball milling and pass through a 100-mesh sieve to obtain slurry, then the slurry is guided into a prepared polytetrafluoroethylene mold, then the mold is directly put into a liquid nitrogen pool for freeze forming, then demolding is performed to obtain a wet blank, and the wet blank is dried to obtain the freeze-formed high-porosity ceramic membrane support. And putting the wet blank into a vacuum environment, carrying out vacuum freeze drying to obtain a dry blank, putting the dry blank into a kiln, carrying out high-temperature sintering, and naturally cooling to obtain the ceramic membrane support. The preparation method of the ceramic membrane support only comprises four process steps, the whole process is simple, raw material components are simple, the porosity can be increased without adding a large number of binders and pore-forming agents, forming can be completed within 1-5 min, the forming time is greatly shortened, the sintering period of the whole support is greatly shortened, meanwhile, vacuum freeze drying and sublimation drying with water are used, and the production cost is reduced. A gap can be formed at the position of water, so that the porosity of the support body is greatly improved.
本发明公开了一种冷冻成型高孔隙率陶瓷膜支撑体及其制备方法，涉及陶瓷膜技术领域，将浆液原料放入球磨机中球磨，过100目筛，得到浆液，再将浆液导入制备好的聚四氟乙烯模具中，再将模具直接放入液氮池中冷冻成型，然后脱模，得到湿坯，再湿坯放入真空环境中，真空冷冻干燥，得到干坯，然后将干坯放入窑炉中，高温烧结，然后自然冷却，即得到陶瓷膜支撑体。本发明陶瓷膜支撑体制备的仅4个工艺步骤，整个工艺简单，且原料组分简单，不需要添加大量粘结剂、造孔剂来增加孔隙率，1‑5min即可完成成型，大大降低成型时间，大大缩短了整个支撑体的烧结周期，同时使用真空冷冻干燥，利用水的升华干燥，水所在的位置能够形成空隙，大大提升了支撑体孔隙率。
Freeze-molded high-porosity ceramic membrane support and preparation method thereof
The invention discloses a freeze-formed high-porosity ceramic membrane support and a preparation method thereof, and relates to the technical field of ceramic membranes, slurry raw materials are put into a ball mill for ball milling and pass through a 100-mesh sieve to obtain slurry, then the slurry is guided into a prepared polytetrafluoroethylene mold, then the mold is directly put into a liquid nitrogen pool for freeze forming, then demolding is performed to obtain a wet blank, and the wet blank is dried to obtain the freeze-formed high-porosity ceramic membrane support. And putting the wet blank into a vacuum environment, carrying out vacuum freeze drying to obtain a dry blank, putting the dry blank into a kiln, carrying out high-temperature sintering, and naturally cooling to obtain the ceramic membrane support. The preparation method of the ceramic membrane support only comprises four process steps, the whole process is simple, raw material components are simple, the porosity can be increased without adding a large number of binders and pore-forming agents, forming can be completed within 1-5 min, the forming time is greatly shortened, the sintering period of the whole support is greatly shortened, meanwhile, vacuum freeze drying and sublimation drying with water are used, and the production cost is reduced. A gap can be formed at the position of water, so that the porosity of the support body is greatly improved.
本发明公开了一种冷冻成型高孔隙率陶瓷膜支撑体及其制备方法，涉及陶瓷膜技术领域，将浆液原料放入球磨机中球磨，过100目筛，得到浆液，再将浆液导入制备好的聚四氟乙烯模具中，再将模具直接放入液氮池中冷冻成型，然后脱模，得到湿坯，再湿坯放入真空环境中，真空冷冻干燥，得到干坯，然后将干坯放入窑炉中，高温烧结，然后自然冷却，即得到陶瓷膜支撑体。本发明陶瓷膜支撑体制备的仅4个工艺步骤，整个工艺简单，且原料组分简单，不需要添加大量粘结剂、造孔剂来增加孔隙率，1‑5min即可完成成型，大大降低成型时间，大大缩短了整个支撑体的烧结周期，同时使用真空冷冻干燥，利用水的升华干燥，水所在的位置能够形成空隙，大大提升了支撑体孔隙率。
Freeze-molded high-porosity ceramic membrane support and preparation method thereof
一种冷冻成型高孔隙率陶瓷膜支撑体及其制备方法
HUANG FEI (Autor:in) / YU LIANG (Autor:in) / YUAN MING (Autor:in) / YU QINGHAI (Autor:in) / WANG YU (Autor:in) / DING BAISUO (Autor:in)
17.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B01D
SEPARATION
,
Trennen
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
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