PVDF
Polyvinylidene Fluoride (PVDF) is the most widespread thermoplastic PTFE. It is also the most durable and the most strudy material among all grades of PTFE, has no cold flow, possesses increased resilience, resistance to abrasive wear, abrasion, cutting, as well as resistance to ultraviolet and ionizing radiation. PVDF is a hardly flammable material. The range of working temperatures is from -40 C to 150 C. PVDF is resistant to acids, alkalis, strong oxidizers, halogens, and to most of organic compounds. Exception is oleum and other sulfiruyuschie agents combined with high temperatures, as well as acetone and other polar solvents (dimethylformamide, dimethylacetamide, dimethyl sulfoxide) and primary amines (butylamine, etc.). Breaking stress in tension PVDF films after storage for a month in concentrated acids, alkalis, hydrogen peroxide, nitrogen tetroxide, chlorine and bromine, triethylamine, isooctane, trichlorethylene and other solvents remains almost the same.
Among the other thermoplastic fluoropolymers PVDF is the cheapest, it is easily welded and processed from the melt all methods usual for thermoplastics at relatively low temperatures (from 180 C to 240 C).
The material is the best option for corrosion protection in chemical, manufacturing industries and for applications in industries such as pharmaceutical, food, semiconductor, nuclear power. It is widely used in industry are sheets of PVDF coatings are used for lining of various, especially bulky, chemical facilities, reactors, tanks, filters, etc.
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