Microporous filtration membrane is the use of polymer chemical materials, pore-causing additives after special treatment coated in the support layer made. In the application of membrane separation technology, microporous filtration membrane is one of the most widely used varieties of membranes, which is simple, fast, and widely used in many fields such as scientific research, food testing, chemical industry, nanotechnology, energy and environmental protection. Microporous filter membrane is mainly made of refined nitrocellulose, add appropriate amount of cellulose acetate, acetone, n-butanol, ethanol, etc., hydrophilic, with non-toxic hygiene, is a kind of porous membrane filtration materials, pore size distribution is relatively uniform penetrating microporous, microporous rate of up to 80 ‰ absolute pore size. Mainly used for aqueous solution filtration, so also known as aqueous membrane.
Flat Sheet Membrane (Flat Sheet Membrane), Hollow Fiber Membrane (Hollow Fiber Membrane) and Tubular Membrane (Tubular Membrane). Among them, the flat paper-type filter membrane can be further subdivided into "unsupported flat paper-type filter membrane" (Unsupported) and "supported flat paper-type filter membrane" (Supported) according to its structural differences. Depending on the technology required for the manufacture of both, the production process of "Unsupported" is more sophisticated and complex than that of "Supported".
Microporous filtration is a sieving process, which belongs to precision filtration. Microporous precision filtration refers to the filtration technology that removes particles from 0.1μm to 10μm. Generally speaking, the filtration mechanism is divided into two categories: surface-type and deep-type. Microporous filtration is a sieving process and belongs to precision filtration. The filtration mechanism of MF membrane manufactured by advanced technology is surface type filtration. Because the filter pore size is fixed, it can ensure the precision and reliability of filtration. Deep filtration is divided into non-fixed irregular aperture and fixed irregular aperture, the former, such as chemical fiber wire-wound cartridge, generally only as a relatively rough pre-filtration.