Polymethylmethyacrylimide (PMMI)

Alternative and trade names
Acrymid®, Pleximid®

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Description

Its key features include:

excellent transmission and clarity

Very high mechanical strength and rigidity

Good weather resistance

High stability of the optical characteristics at long-lasting thermal load.

Highest heat deflection temperature under load.

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	1.21 - 1.22 g/cm³ Show Material materials with Density of 1.21 - 1.22 g/cm³

Mechanical

Property	Value	Comment
Elastic modulus	4.0 - 4.1 GPa Show Material materials with Elastic modulus of 4.0 - 4.1 GPa
Elongation	3 % Show Material materials with Elongation of 3 %
Impact strength, Charpy notched	1.4 kJ/m² Show Material materials with Impact strength, Charpy notched of 1.4 kJ/m²
Impact strength, Charpy unnotched	20 kJ/m² Show Material materials with Impact strength, Charpy unnotched of 20 kJ/m²
Tensile strength	80.0 - 90.0 MPa Show Material materials with Tensile strength of 80.0 - 90.0 MPa	at 3% strain

Thermal

Property	Value
Coefficient of thermal expansion	4.5e-05 - 8e-05 1/K Show Material materials with Coefficient of thermal expansion of 4.5e-05 - 8e-05 1/K
Flammability	UL 94 HB

Optical

Property	Value
Transparency	yes

Technological properties

Property

Application areas

automotive head- and rear lights, optical fibres, sun roofs, packaging for cosmetics

Processing methods

Injection molding, extrusion

Polymethylmethyacrylimide (PMMI)

Description

Ashby charts

Applications

Suggested reading

Properties