Discover our main brands websites

Arkema worldwide

top

Piezoelectric and Ferroelectric Copolymers & Inks

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.

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)

 

Piezotech® FC Powders

P(VDF-TrFE) powders are available in a variety of VDF/TrFE ratios.

Specific composition or molecular weight can be produced upon request.

 

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 Inks

Solvents and concentrations have been optimized to allow for the use of standard printing conditions. 3 standard formulations adapted for 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

technical_guide_piezotech.png_1644223205.png

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.