Polytetrafluorethylene (PTFE)
PTFE is a partially crystallized fluoroplastic with an exceptionally high chemical and thermal resistance (–200 °C to +260 °C, briefly up to 300 °C). In addition, the thermoplastic material has excellent sliding properties, an anti-adhesive surface and excellent insulation properties. However, this is offset by low mechanical strength and a high specific weight compared to other plastics.
To improve the mechanical properties, PTFE can be provided with fillers such as glass fiber, carbon or bronze.
Properties:
- extremely good chemical resistance
- very good temperature resistance
- very low coefficient of friction
- extremely low surface tension
- difficult to bond
- high thermal expansion
- relatively low strength and stiffness
- low dielectric constant
- not flammable
- physiological harmlessness
Application:
- Chemical Plant Engineering
- Transport and conveyor technology
- Medical Technology
- Food Technology
- Mechanical Engineering
- Seals
- Linings
- Guide rails
- Conveyor belts
PTFE Virginal
Without filler
PTFE + Fiber optic
Reduction of cold flow, increase of pressure and wear resistance.
PTFE + Coal
Increase of the pressure and wear resistance. Increase of the thermal conductivity and the degree of hardness.
PTFE + Bronze
Reduction of the cold flow behaviour. Increase of the thermal conductivity.
