Polymethacrylimide, foam (PMI)

Alternative and trade names
Rohacell®
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Description

The key features are:


  • Excellent mechanical properties over a wide temperature range, even at low densities
  • High temperature resistance up to 210°C
  • Unique compressive creep behavior for processing up to 180°C and 0.7 MPa
  • Excellent dynamic strength
  • Cell sizes that can be tailored for each processing method
  • 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.

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    Properties

    General

    PropertyValue

    Density

    0.03 - 0.3 g/cm³

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    Mechanical

    PropertyValueComment

    Elastic modulus

    0.035 - 0.39 GPa

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    Elongation

    3.0 - 11.0 %

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    Tensile strength

    1.0 - 12.0 MPa

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    at 3-11% strain

    Thermal

    PropertyValue

    Coefficient of thermal expansion

    3e-05 - 4e-05 1/K

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    Flammability

    UL 94 V0

    Electrical

    PropertyValue

    Dielectric constant

    1 [-]

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    1.1 [-]

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    Optical

    PropertyValue

    Transparency

    no

    Technological properties

    Property
    Application areas

    Core material for aircraft components, core material for wind turbine blades, structural core for radomes

    Processing methods

    Foaming, thermoforming