| abstract |
The invention provides a microfiltration membrane, a preparation method and application thereof, and belongs to the technical field of membrane separation. Wherein, the preparation method of the microfiltration membrane includes: mixing and pressing a variety of preset metal powders to obtain a compact, performing multi-stage sintering treatment on the compact, and controlling the sintering heating rate to be at a preset sintering heating rate Within the range, a micron-scale porous support is obtained, and a nano-scale three-dimensional network structure is constructed on the micron-scale porous support to obtain a microfiltration membrane. In the present invention, a micron-level porous support body can be obtained by controlling the sintering process, and a nano-level three-dimensional network structure can be constructed on the micron-level porous support body by chemical vapor deposition, controlled oxidation and chemical reaction, and a micron/nano double-pore size microstructure can be formed. Filter membrane, in order to realize the treatment of particles to be filtered with different particle sizes, and has high temperature resistance, acid and alkali corrosion resistance, high filtration effect and long service life, and can be used under normal or high temperature conditions. |