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Introduction of composite membrane
- Categories:Plastic Knowledge
- Time of issue:2020-12-22 16:41
(Summary description)The composite membrane is a microporous membrane or ultrafiltration membrane as a branch layer, and its surface is covered with a separation membrane composed of a dense average mode with a thickness of only 0.1-0.25 μm as a barrier layer. This greatly increases the amount of material permeated.
Introduction of composite membrane
(Summary description)The composite membrane is a microporous membrane or ultrafiltration membrane as a branch layer, and its surface is covered with a separation membrane composed of a dense average mode with a thickness of only 0.1-0.25 μm as a barrier layer. This greatly increases the amount of material permeated.
- Categories:Plastic Knowledge
- Time of issue:2020-12-22 16:41
- Views:
The composite membrane is a microporous membrane or ultrafiltration membrane as a branch layer, and its surface is covered with a separation membrane composed of a dense average mode with a thickness of only 0.1-0.25 μm as a barrier layer. This greatly increases the amount of material permeated.
The material of the composite membrane includes any possible combination of materials, such as metal oxide covered with a ceramic membrane or polysulfone microporous membrane covered with an aromatic polyamide film. The flat membrane or roll membrane should be made of nonwovens. It is reinforced to support the pressure resistance of the microporous membrane, which is not required for the hollow fiber membrane.
Composite membranes are mainly used in separation processes such as reverse osmosis, gas separation, and pervaporation.
Two different membrane materials are used to make a membrane composed of a surface active layer with separation function (dense separation layer) and a supporting porous layer.
The composite membrane is a composite geomembrane that is pasted with geotextile on one or both sides of the membrane. Its form has one cloth and one film, and two cloth and one film. The width is 4-6m, the weight is 200-1500g/m2, the physical and mechanical properties such as tensile resistance, tear resistance, and bursting resistance are high. The product has high strength, good elongation, large deformation modulus, acid and alkali resistance, Corrosion resistance, aging resistance, and good anti-seepage performance. It can meet the needs of civil engineering such as water conservancy, municipal administration, construction, transportation, subway, tunnel, and engineering construction for anti-seepage, isolation, reinforcement, crack prevention and reinforcement. Because of its selection of polymer materials and the addition of anti-aging agents in the production process, it can be used in unconventional temperature environments. It is often used for the anti-seepage treatment of dams and drainage ditches, and the anti-fouling treatment of waste material yards.
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