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PTFE (polytetrafluoroethylene)

PTFE is a partially crystallized fluoroplastic with exceptionally high chemical and thermal resistance (-200 to + 260 ° C, short-term up to 300 ° C).

In addition, the thermoplastic material has excellent sliding properties, an anti-adhesive surface and best insulation properties. However, this is offset by low mechanical strengths and a high specific weight compared to other plastics. To improve the mechanical properties of PTFE, it can be provided as a compound with fillers such as glass fibre, carbon or bronze. Due to the structure of this material, it is formed by compression moulding into semi-finished and then machined.

Properties

The properties of PTFE are:
  • Very good sliding properties (the lowest friction coefficient of all solid materials)
  • Can be used over a very wide temperature range (-200 ° C to + 260 ° C)
  • Very good chemical resistance
  • Resistant to hydrolysis and hot steam
  • No moisture absorption
  • Physiologically harmless (BGA and FDA approval)
  • Very good UV resistance
  • Very good damping properties
  • Good electrical insulation capacity (unfilled type)
  • Moderate mechanical strength

Applications

PTFE can be used in the following areas:
  • Chemical industry: pipes, valves, gaskets, linings, membranes
  • Mechanical engineering: wipers, scrapers, piston rings, seals, plain bearings
  • Electrical engineering: bobbins, components for insulation

Availability

Applies to pure PTFE and the modifications PTFE + GF, PTFE + carbon and PTFE + conductive pigment
  • Pressed plates 1200 x 1200 x 1-100
  • Ram-extruded rods 8 - 150 x 2000 (not for PTFE + conductive pigment)
  • Pressed blanks in many different dimensions and material mixtures, maximum length of 330 mm (please send us your request)

Modification options

  • PTEE + glass fibre = increasing creep strength
  • PTEE + coal = wear reduction, antistatic
  • PTFE + conductive pigment = static dissipative, approved by food laws
  • PTFE + mica (Fluorosint® 207) = higher mechanical load capacity and lower coefficient of linear expansion, FDA approval
  • PTFE + mica (Fluorosint® 500) = higher mechanical load capacity and lower coefficient of linear expansion
  • PTFE + antistatic agent (Semitron® ESd 500HR) = static dissipative
  • PTFE + bronze = increasing the creep rupture strength, wear resistance and thermal conductivity
  • PTFE + graphite = increase of the abrasion resistance and emergency running properties of plain bearings
  • PTFE + V2A = improvement of mechanical properties

Your personal contact

  • Thomas Kuhn

    Thomas Kuhn

    Managing Director Contact for application consulting and costing
  • Christian Hillebrand

    Christian Hillebrand

    Authorized officer Contact for costing and purchasing
Enquiry
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