PBT - Polybutylene terephthalate 

TECADUR / HYDEX Ensinger Plastics

Polybutylene terephthalate, otherwise known as PBT plastic is a semi crystalline thermoplastic within the polyester family of polymers. Like other polyesters, PBT polymer is particularly suited for applications in the food industry because of its excellent resistance to chlorine and caustic cleaning solutions. PBT polyester material is also characterised by high strength, rigidity and thermal deformation resistance, as well as very high dimensional stability and a low tendency to creep. Furthermore, PBT polymers, like all polyesters, have very good friction and wear properties. Compared to PET polyester, PBT has a better impact strength, particularly at low temperatures. Because of this characteristic, PBT is significantly easier to modify with fibres than PET, and is therefore also generally available as a fibre reinforced product.

PBT material properties and specifications

PBT plastics offers:

  • High strength and rigidity
  • Dimensionally stable
  • Low tendency to creep
  • Very good frictional and wear resistance
  • Good impact strength
  • Very low coefficient of thermal expansion
  • Good chemical resistance to acids
  • Excellent resistance to chlorine and caustics
  • Very good electrical characteristics
  • Very low moisture absorption
  • Good adhesion and welding ability

Manufactured PBT Materials

PBT plastics modifications are supplied by Ensinger under the tradename TECADUR PBT and HYDEX. The Ensinger TECADUR PBT and HYDEX families offer the following modifications:

  • TECADUR PBT GF30- PBT with 30% glass fibre reinforcement

Ensinger manufactures PBT shapes such as:

  • PBT rod
  • PBT sheet

Typical PBT applications

    • Connector strips and insulating housing electronic applications
    • Valve parts
    • Pump housing
    • Parts for household applications