The polymer separation membrane is a semipermeable membrane having a selective permeation function made of a polymer material. The use of such a semipermeable membrane, with a pressure difference, a temperature gradient, a concentration gradient or a potential difference as a power, enables a gas mixture, a liquid mixture or a solution of an organic substance or an inorganic substance to be energy-saving, efficient, clean, etc. Characteristics are thus considered to be major technologies supporting the new technological revolution. The membrane separation process mainly includes reverse osmosis, ultrafiltration, microfiltration, electrodialysis, pressure dialysis, gas separation, pervaporation and liquid membrane separation. Used to prepare separation, pervaporation and liquid membrane separation. There are many types of polymer materials used to prepare the separation membrane. More maples, polyolefins, cellulose esters and silicones are used today. There are also many types of membranes, generally flat membranes and aerial fibers. The promotion of the application of polymer separation membranes can achieve huge economic and social benefits. For example, the use of ion exchange membranes to electrolyze salt can reduce pollution and save energy: seawater desalination and desalination using reverse osmosis is less energy than Other methods; enrichment of oxygen from air by gas separation membrane can greatly improve oxygen recovery. Wait.
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Used in automotive applications, plumbing, and more, flange bolts feature a Washer like flange beneath the Bolt head that speeds production time and distributes the clamping load, offering protection to the mating surface.
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