Piezoelectric and Ferroelectric Copolymers Piezotech® FC
Well-ordered polymer chains with strong dipoles from carbon-fluoride bonds, lead to the very special piezoelectric and ferroelectric properties of these P(VDF-TrFE) copolymers.
We produce and markets electroactive copolymers P(VDF-TrFE), in the form of powders, inks or films.
Piezotech® FC
P(VDF-TrFE) copolymers, named Piezotech® FC, exhibit high piezoelectric responses over a wide range of temperatures in their poled ferroelectric phase:
- High thermal stability of the piezoelectric properties
- Low power consumption: external power source unnecessary
- Good mechanical properties
- High coupling factor
- Wide frequency range
- Transparency
- Chemical resistance
- High dielectric strength
Compared to PVDF homopolymer, these materials display several advantages:
- Upper thermal stability (80 °C for PVDF versus 130°C for Piezotech® FC20)
- Improved coupling factor (0.15 for PVDF versus 0.3 for P(VDF-TrFE))
- Printable
- Enhanced piezoelectric properties (higher d33)
Typical properties:
Given as indicative values, not specifications.
|
Product name |
Typical TrFE content (mol%) |
Curie Temperature (°C) |
Typical remnant polarization at 150 V/µm (mC/m²) |
Typical d33 (pC/N) |
|---|---|---|---|---|
|
Piezotech® FC20 |
20 | 136 | 85 |
-24 to -30 |
|
Piezotech® FC25 |
25 | 115 | 70 | |
|
Piezotech® FC30 |
30 | 100 | 65 |
-18 to -22 |
|
Piezotech® FC45 |
45 | 60 | 45 |
Piezotech® FC Powders
P(VDF-TrFE) powders are available in a variety of VDF/TrFE ratios: FC20 (20% TrFE), FC25 (25% TrFE), FC30 (30% TrFE) and FC45 (45% TrFE).
Specific composition or molecular weight can be produced upon request.
Piezotech® FC Inks
Solvents and concentrations have been optimized to allow for the use of standard printing conditions. 3 standard formulations (ink L, ink P, ink H) adapted to conventional techniques are available.
Standard Piezotech® FC Inks are formulated with Piezotech® FC20 polymer powder.
Specific inks can be formulated upon request.
| Grade | Technology |
Viscosity (mPa.s at 32 °c) |
Thickness range (µm) |
Indicative dry content (wt%) |
|---|---|---|---|---|
| Ink L |
Spin-coating Slot-die |
< 1000 | 0.1 - 2 | 7 |
| Ink H |
Spin-coating Solvent-casting |
1500 - 3000 |
Spin-coat: 0.5 – 2 Solvent-cast: 2 - 80 |
20 |
| Ink P | Screen-printing | 12000 - 24000 | 1-10 | 17.5 |
Download our Technical Guide
The different technical guides support the use of the different Piezotech® products:
- Piezotech® FC
- Piezotech® RT
- Piezotech® FC Ink P
- Piezotech® PVDF Shock Gauges
- TDS Piezotech® FC Films
These documents summarize some typical properties, the general processing rules and advices and the integration into electrical devices and signal processing guidelines.