Polyvinylidene fluoride

Update:14 Dec 2018
Summary:

Normally, it is a semi-crystalline polymer with a cryst […]

Normally, it is a semi-crystalline polymer with a crystallinity of about 50%. Five crystal forms such as α, β, γ, δ, and ε have been reported so far, which are formed under different conditions and can be converted into each other under certain conditions (heat, electric field, mechanical, and radiant energy). Of these five crystal forms, the β crystal form is the most important, and PVDF, which is used for piezoelectric and pyroelectric applications, mainly contains the β crystal form.
Uses: Used to press chemical machinery parts, sealing materials, electrical insulation and anti-corrosion coatings.