Waterproof breathable film of the main role

Gas permeable membrane is an application of membrane separation. It is a new separation method to separate and filter the mixture under the action of external pushing force by using a specially made membrane with selective permeability. The membrane has the property of making certain substances passable and making certain substances impassable. Since the 1960s Kai, membrane separation technology has developed rapidly. At present, it mainly includes PTFE , Nylon, PES, PVDF, PP, NC, MCE, Pete and so on. PTFE is used in the field of gas permeability because of its excellent chemical stability and natural hydrophobicity. Breathable film is mainly reflected in waterproof breathable, dust-proof breathable and prevent bacteria breathable. It is widely used in automotive, medical, Environmental monitoring, packaging, electronic sensor protection and other fields. Waterproof breathable film is mainly used for clothing waterproof breathable. It is called“Respirable material” in foreign countries. Microfiltration membrane is the main gas permeable membrane, the pore size is between 0.1-10μm. For the membrane, there are two important numerical values of water pressure and permeability. In general, the two are competitive, high permeability means that the low inlet pressure. Gas permeable film mainly uses hydrophobic film and oil-repellent film, and in most cases, oil-repellent film is used. Although ePTFE has a natural hydrophobic, oil-repellent, but encounter some low surface energy alcohol, cleaning agents, lubricants and other liquids, will be wetted through. The oil-repellent film surface can be lower, can resist the infiltration of these liquids. At present, EPTFE breathable film is mainly used in automotive breathable, medical breathable, electronic sensor breathable, packaging breathable, which includes home packaging, agricultural packaging and industrial packaging and other fields. The article content comes from the network, if has the question please to contact with me to delete!