About PVdF Film

Needle-heads
Properties of Poled Piezo-electric PVDF Film

The process of turning PVDF from an inert polymer to a poled piezo-electric film is a complicated one involving several changes. Partly due to this, and partly due to the inherent randomness of the semi-amorphous structure of PVDF, there can be considerable variation in the material properties of the final material. Consequently, the material properties listed in the PDF download (below) provide an indication of the typical values, rather than any guarantee of exact data.

How to Use PVdF
  • PVdF is pre shrunk prior to the deposition of electrodes and further “shrinking” is not required.
  • Exposure to temperatures above 80°C will start to irreversibly degrade the performance of PVdF.
  • Do not solder onto PVdF as this can cause local depolarization.
  • To make a connection to the metallised PVdF consider the use of:
    • Mechanical connection via a crimp or fold.
    • Adhesive connection using silver loaded epoxy.
  • To bond PVdF to a substrate use a low viscosity epoxy or nitrile contact adhesive.  In either case make sure sufficient pressure is applied during cure.
  • To cut PVdF use a sharp scalpel.

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