Ultrafiltration membrane is the core component of Under Sink Slim Design UF Purifler, and its performance directly affects the filtration effect and durability of the purifier. Ultrafiltration membranes are mainly made of polymer materials, such as cellulose acetate, polysulfone, polyacrylonitrile, polyamide, polyvinylidene fluoride (PVDF), etc. These materials have good chemical stability, thermal stability and mechanical strength, and can meet the use requirements of ultrafiltration membranes. Different polymer materials have different properties. For example, PVDF material has excellent chemical corrosion resistance, high temperature resistance and radiation resistance, so it is widely used in ultrafiltration membrane manufacturing.
The structure of ultrafiltration membrane is usually a hollow fiber structure, which has the advantages of high filling density, large effective membrane area and high pure water flux. The pore size of hollow fiber ultrafiltration membrane is between 0.01 and 0.1 microns, which can effectively intercept impurities such as macromolecules and microorganisms in water, while allowing small molecules such as water and inorganic salts to pass through. The pore size control of ultrafiltration membrane is the key to ensuring the filtration effect. A pore size that is too large may allow impurities to pass through, while a pore size that is too small may increase the filtration resistance and reduce the flux. The control of the pore size can be achieved by adjusting the membrane making process parameters, such as the type and concentration of the solution, evaporation and condensation conditions, etc.
In addition to the ultrafiltration membrane, the UF purifier also includes other components such as the housing, connecting pipes, and valves. The purifier will be exposed to various water qualities during use, including sewage containing corrosive substances. Therefore, components such as the housing and connecting pipes need to have good corrosion resistance to prevent leakage or damage caused by corrosion. In some applications, the purifier needs to work in a high temperature environment. Therefore, components such as the housing and connecting pipes need to have good high temperature resistance to prevent deformation or damage caused by high temperature.
The purifier needs to be used for a long time, so components such as the housing and connecting pipes need to have the characteristics of not being easy to age in order to extend the service life of the purifier. The various components of the purifier need to have good sealing to prevent leakage. Therefore, when selecting the sealing material, it is necessary to ensure that it has good elasticity and corrosion resistance.