Vinylidene Fluoride HFP, PVDF

Polyvinylidene fluoride (PVDF) is a homopolymer of 1,1-difluoroethene with alternating CH2 and CF2 groups along the polymer chain. These groups impart a unique polarity that influences its solubility and electrical properties. The polymer has the characteristic stability of fluoropolymers when exposed to aggressive thermal, chemical, and ultraviolet conditions. 

In general, PVDF is one of the easiest fluoropolymers to process and can be easily recycled without affecting its physical and chemical properties. As 

PVDF is highly resistant to the effects of sim, weather, and ozone. Its mechanical properties are retained, whereas the percent elongation to break decreases to a lower level and then remains constant. 

In general, PVDF is completely resistant to chlorinated solvents, aliphatic solvents, weak bases and salts, strong acids, halogens, strong oxidants, and aromatic solvents. Strong bases will attack the material. 

The broader molecular weight of PVDF gives it greater resistance to stress cracking than many other materials, but it is subject to stress cracking in the presence of sodium hydroxide. 

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