Relaxor-ferroelectric and High-k Terpolymers & Inks

Additional CTFE or CFE monomer units, in the well-organized VDF-TrFE chains, improve dipole mobility, thus inducing unique relaxor ferroelectric properties.

Piezotech® RT

P(VDF-TrFE-CTFE) or P(VDF-TrFE-CFE) are unique relaxor ferroelectric polymers that exhibit high electrostrictive strain and high dielectric constants. 

  • High deformation (directly proportionnal to the applied electric field squared, E²)
  • High elastic energy
  • High stress

Piezotech® RT Terpolymer Powders

Piezotech® RT terpolymer powders are available with either CFE or CTFE as the termonomer. 

 

Specific composition or molecular weight can be produced upon request.

Product Name Termonomer

Typical termonomer content

(mol%)

Typical melting point

(°C)

Typical relative dielectric constant

(1 kHz)

Piezotech® RT-TS CTFE 8.5 122 40
Piezotech® RT-FS CFE 8.5 127 55
Electroactive ink 2

Piezotech® RT Inks

Solvents and concentrations have been defined to allow for the use of standard printing conditions. 4 standard formulations adapted for conventional techniques are available.

 

Standard Piezotech® RT Inks are formulated with Piezotech® RT-TS 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 I Ink-jet < 20 0.05 - 2 0.6
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

 

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