A freeze-formed high porosity ceramic membrane support and a method of making the same
By simplifying the preparation process of ceramic membrane supports through freeze-forming and utilizing the sublimation drying of water to form pores, the problems of complex processes and low porosity in existing technologies are solved, and high porosity and high performance ceramic membrane supports are achieved.
CN118047592BActive Publication Date: 2026-07-24ZINGKE (CHONGQING) ADVANCED MATERIALS RES INST CO LTD
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Patent Information
- Application Number
- CN202311715488.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2026-07-24
- Estimated Expiration
- 2043-12-14
AI Technical Summary
Technical Problem
Existing ceramic membrane support preparation processes are complex, have low porosity, and the addition of pore-forming agents increases the difficulty of the process and leads to substandard performance.
Method used
A high-porosity ceramic membrane support was prepared by cryogenic molding. The simplified process of slurry preparation, cryogenic molding, vacuum drying and high-temperature sintering utilizes the sublimation drying of water to form pores, avoiding the use of large amounts of binders and pore-forming agents.
Benefits of technology
A simplified preparation process for ceramic membrane supports was achieved, increasing the porosity to over 50%, shortening the sintering cycle, and improving the strength and flux performance of the supports.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a kind of frozen forming high porosity ceramic membrane support and preparation method thereof, it is related to ceramic membrane technical field, slurry raw material is placed into ball mill, ball milling is passed 100 mesh screen, obtain slurry, again slurry is introduced into prepared polytetrafluoroethylene mould, again mould is directly placed into liquid nitrogen pool and frozen forming, then demolding, obtain wet blank, again wet blank is placed into vacuum environment, vacuum freeze-drying, obtain dry blank, then dry blank is placed into kiln, high-temperature sintering, then natural cooling, ceramic membrane support is obtained.The application ceramic membrane support preparation is only 4 process steps, whole process is simple, and raw material component is simple, it is not necessary to add a large number of binder, pore-forming agent to increase porosity, 1-5min can be completed forming, greatly reduce forming time, greatly shorten the sintering cycle of whole support, simultaneously using vacuum freeze-drying, utilize water sublimation drying, the position where water is located can form interstice, greatly improve the porosity of support.
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