PVDF
Polyvinylidene Fluoride
Glass Transition (Tg)
-40 to -35 °C
Melting Point (Tm)
170–175 °C
Density
1.75–1.78 g/cm³
CAS Number
24937-79-9
Recycling Code
♺ 7
Category
High-Performance
Repeat Unit
–[CH₂–CF₂]ₙ–
The repeating unit is the smallest structural fragment whose repetition builds the whole chain. Subscripts show the relative share of each unit in copolymers.
Key Properties
Melt-processable fluoropolymer; the β-phase is strongly piezoelectric and ferroelectric; excellent UV and chemical resistance.
Applications
Li-ion battery binders, piezoelectric sensors, architectural coatings, membranes.