Stability of PVF

Polyvinyl fluoride (PVF) is a highly crystalline polymer formed by the polymerization of vinyl fluoride monomers. (1) PVF is a non-toxic, odorless, tasteless transparent, translucent, or milky white powder or particles with a molecular weight of 60,000 to 180,000. It has the lowest fluorine content, the lowest density, and the lowest cost among fluoroplastics; industrially, it can only be used in film products. (2) PVF is a soft yet strong material with excellent weather resistance, and can be used over long periods at temperatures ranging from 85 to 150°C. The mechanical strength, dielectric constant, dielectric loss tangent, and dielectric strength are all very high. (3) Its chemical resistance is inferior to that of F4, but it can resist most acids, bases, and solvents at room temperature, such as dilute sulfuric acid, phosphoric acid, sodium hydroxide, phenol, and kerosene ； It dissolves in dimethylformamide, dimethylacetamide, and the like at high temperatures. (4) PVF is mainly used in film products, but its processing temperature is very close to its decomposition temperature; therefore, plasticizers must be added in order to enable processing. (5) PVF products are mainly used as transparent materials for skylights and roofs, corrosion-resistant coatings, electrical components with high dielectric constants, submarine cables, and coatings for instrument parts.

Great, I exactly need to know its purpose. Could you provide more details?