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Shortcomings of polytetrafluoroethylene lining technology
- May 17, 2018 -

Shortcomings of polytetrafluoroethylene lining technology

China's oil, chemical, pharmaceutical, pesticide, dyes and other industrial industries have caused economic losses of about 400 billion RMB every year because of equipment corrosion, and about 15 million tons of steel loss.

However, to enhance polyethylene (PE), polypropylene (PP), polyolefin (PO), polyvinylidene fluoropropene copolymer (F46), soluble polyfluoroethylene (PFA), poly (F3), polyvinylidene fluoride (F2) as anticorrosion lining of chemical equipment, it should be limited: one is low temperature (less than 120 degrees C, more than 100 degrees centigrade, easy to cause lining. " The material is softened and melted, causing seal leakage. The two is in corrosive corrosive acid, alkali and other media, lining is easy to be corroded and damaged. Three is the liquid medium impact wear, causing seal leakage. Four, it is difficult to form the inner lining of equipment with complicated structure. The lining is deformed and deformed.