Thermoplastic rubber vulcanisate (TPV)

Alternative and trade names
Santoprene™, Dryflex®, Forprene®, PHOENIX™
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Description

Thermoplastic Vulcanisate (TPV) compounds are high performance materials designed for demanding applications where improved durability, heat or fluid resistance are required. They are composed of a highly vulcanised rubber phase dispersed throughout a thermoplastic matrix and combine the processing ease, efficiency and recyclability of a thermoplastic with the improved flexibility, low compression set and resistance to aggressive fluids of a vulcanised rubber. They have seen strong growth in automotive seals, pipe seals, and other applications where a heat resistance of up to 135°C is required. Hardness values range typically from 45 Shore A to 50 Shore D. TPVs also lend themselves to underbonnet automotive applications where improved temperature and oil resistance is required. The main features are:


  • Service temperatures of -60°C to 135°C
  • Low compression set
  • Low flex fatigue
  • The Dryflex XL grades are easier to colour
  • Lightweight parts
  • Design flexibility
  • Recyclability
  • Excellent weathering and environmental resistance
  • Adhesion to PP and PE in multi-component applications
  • This material data has been provided by M-Base.

    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

    Ashby charts

    Properties

    General

    PropertyValue

    Density

    0.89 - 1.04 g/cm³

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    Mechanical

    PropertyValue

    Elongation

    200.0 - 750.0 %

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    Thermal

    PropertyValueComment

    Coefficient of thermal expansion

    5e-05 - 8e-05 1/K

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    Max service temperature

    130.0 - 135.0 °C

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    Short

    130.0 - 135.0 °C

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    Long

    Melting point

    220 °C

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    Flammability

    UL 94 HB

    Electrical

    PropertyValue

    Dielectric constant

    3.5 [-]

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    4 [-]

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    Electrical resistivity

    50000000000000.0 - 5000000000000000.0 Ω·m

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    Optical

    PropertyValue

    Transparency

    no

    Technological properties

    Property
    Application areas

    Gaskets, air induction system ducts, bumpers, automotive plugs, speaker surrounds

    Other

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    Processing methods

    Injection molding, blow molding, extrusion, thermoforming, calandering