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.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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

Property	Value
Density	0.03 - 0.3 g/cm³ Show Material materials with Density of 0.03 - 0.3 g/cm³

Mechanical

Property	Value	Comment
Elastic modulus	0.035 - 0.39 GPa Show Material materials with Elastic modulus of 0.035 - 0.39 GPa
Elongation	3.0 - 11.0 % Show Material materials with Elongation of 3.0 - 11.0 %
Tensile strength	1.0 - 12.0 MPa Show Material materials with Tensile strength of 1.0 - 12.0 MPa	at 3-11% strain

Thermal

Property	Value
Coefficient of thermal expansion	3e-05 - 4e-05 1/K Show Material materials with Coefficient of thermal expansion of 3e-05 - 4e-05 1/K
Flammability	UL 94 V0

Electrical

Property	Value
Dielectric constant	1 [-] Show Material materials with Dielectric constant of 1 [-]
	1.1 [-] Show Material materials with Dielectric constant of 1.1 [-]

Optical

Property	Value
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

Polymethacrylimide, foam (PMI)

Description

Ashby charts

Applications

Suggested reading

Properties