Virgin PTFE

PTFE is a perfluorinated semi-crystalline polymer that, thanks to its molecular structure, possesses a set of chemical, electrical, mechanical, thermal and surface properties that make it unique and different from any other plastic material.

The uniqueness of ownership and behavior is guaranteed by:

  • The shielding effect of the fluorine atoms positioned outside the linear chain of carbon atoms;
  • The very high molecular weight;
  • The extremely high crystalline fraction.

The high chemical inertness, the high thermal and electrical insulating power, the very low friction coefficient, the low surface tension, the total insolubility in solvents, and the high-temperature resistance, guarantee an extremely wide range of use concerning applications in '' chemical, automotive, aerospace, architectural industries, in paints as well as as an additive in plastics, rubbers, inks, greases, etc.

POLIS post-processes and sells the entire range of PTFE thanks to its knowledge of the polymer and its contacts with all the main manufacturers in the world.

Coeff.Poisson: 0.4
Mod Elastic to tensile: 700MPa
Tensile strength: 10 MPa
Tensile strength at break: 36 MPa
Elongation at break: 380%
Compression deformation (14Mpa, 24h): 15%
Residual deformation (0 Mpa, 24h): 7%

Friction coefficient PTFE vs STEEL
Static: 0.08
Dynamic: 0.06

Dielectric constant1 kHz: 2.1
Loss factor (tg δ) 1 kHz: 5 10-4
Volume resistivity: 1018 Ohm mm
Dielectric strenght (0.125 mm thick): 90-110 kV/mm

Minimum working temperature: -260°C
Linear thermal expansion coefficient 20-100°C: 15 10-5 °C-1

Index of refraction n: 1.35