Description
Student Pack of PVdF contains:
- 1 x 110 micron PVdF poled, golded on both surfaces, size 5cm by 5cm.
- 1 x 52 micron PVdF poled, golded on both surfaces, size 5cm by 5cm.
- 1 x 28 micron PVdF poled, golded on both surfaces, size 5cm by 5cm.
The polarity of the film is marked.
Typical Uses
- Pressure or impact sensors.
- Strain gauge.
- Simple microphones.
- Acoustic pickups.
Specifications
General Properties Relevant to all Samples. Quarter and half wave thickness resonance frequencies for PVDF film can be deduced from the acoustic velocity and the thickness of the film.
| Density: | 1780 kg/m3 |
| Longitudinal Acoustic Velocity: | 2260 m/s |
| Melting Temperature: | 175-180 ºC |
| Curie Temperature: | None observed but extrapolates to 205 ºC |
| Max Operating Temperature: | 70 ºC |
28um, 52um and 110um PVDF
| Metallisation: | Approximately 250 nm Gold on top of 40 nm Chrome |
| Film Orientation: | Uni-axially oriented film |
| Poling Method: | Poled as continuous roll via corona discharge |
| Poling Uniformity: | Some small-scale local variation |
| Approximate Piezo Coefficients: | d31 = 22 pC/N, d32 = 3 pC/N, d33 =-28 to -32 pC/N |
| Di-electric Constant (Relative permittivity): | 10-12 |
We can also supply a small sample of 9 micron film at extra cost.
Please contact us for prices.
9um PVDF
| Metallisation: | Approximately 200 nm Gold on top of 50 nm Platinum |
| Film Orientation: | Bi-axially oriented film |
| Poling Method: | Poled as single sheet |
| Poling Uniformity: | Very uniform |
| Approximate Piezo Coefficients: | d31 = 6 pC/N, d32 = 5 pC/N, d33 = -30 pC/N, |
| Di-electric Constant (Relative permittivity): | 10-12 |
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