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Evonik Corporation Rohacell® 71 A Aircraft Grade Polymethacrylimide (PMI) Foam

Category Other Engineering Material , Composite Core Material , Polymer , Thermoset , Polymethacrylimide
Manufacturer Evonik Corporation
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Evonik Corporation Rohacell® 71 A Aircraft Grade Polymethacrylimide (PMI) Foam.pdf
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Material Notes:
Description: ROHACELL® is produced by thermal expansion of a co-polymer sheet of methacrylic acid and methacrylonitrile. During the foaming process the copolymer sheet is converted to PMI - PolyMethacrylImide. Alcohol is used as a blowing agent, thus ROHACELL® contains no fluorinated carbon hydrates and is halogen free. It has a very homogeneous cell structure and isotropic properties.Specific Notes for this Material: ROHACELL® A (Aircraft grade) is a closed-cell rigid foam plastic based on PMI (polymethacrylimide) which does not contain any CFCs. The field of application for ROHACELL® A is aircraft construction. Curing temperature up to 130C (266F). Curing pressure up to 0.35 MPa (50 psi). Sandwich components using ROHACELL® A as core material can be realized in a single work step (= cocuring).The structural components can be manufactured in an autoclave and by means of RTM. ROHACELL® A is easy to shape. Thermoformability is another advantage of the core material.Information provided by degussa.
Physical Properties Metric English Comments
Density 0.0750 g/cc
0.00271 lb/in³
DIN 53420, ISO 845, ASTM D 1622
Mechanical Properties Metric English Comments
Tensile Strength at Break 2.80 MPa
406 psi
DIN 53455, ISO 527-2, ASTM D 638
Elongation at Break 4.5 %
4.5 %
DIN 53455, ISO 527-2, ASTM D 638
Modulus of Elasticity 0.0920 GPa
13.3 ksi
ISO 527-2, ASTM D 638
Flexural Strength 2.50 MPa
363 psi
DIN 53423, ISO 1209, ASTM D 790
Compressive Strength 1.50 MPa
218 psi
DIN 53421, ISO 844, ASTM D 1621
Shear Modulus 0.0290 GPa
4.21 ksi
DIN 53294, ASTM C 273
Shear Strength 1.30 MPa
189 psi
DIN 53294, ASTM C 273
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 180 °C
356 °F
Heat Distortion Resistance; DIN 53424
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