Evonik Rohacell® 71 IG-F Industrial Grade Polymethacrylimide (PMI) Foam

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Evonik Rohacell® 71 IG-F Industrial Grade Polymethacrylimide (PMI) Foam
Categories:	Other Engineering Material; Composite Core Material; Polymer; Thermoset; Polymethacrylimide
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® IG (=Industrial Grade) is a closed-cell rigid foam plastic based on PMI (polymethacrylimide) which does not contain any CFCs. The fields of application for ROHACELL® IG are model building, vehicle construction and shipbuilding, as well as the manufacture of sports articles and X-ray tables. Information provided by degussa. Evonik Industries is the successor company to Degussa.
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Physical Properties	Original Value	Comments

Density	4.68 lb/ft³	DIN 53420, ISO 845, ASTM D 1622

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	2.80 MPa	DIN 53455, ISO 527-2, ASTM D 638
Elongation at Break	4.5 %	DIN 53455, ISO 527-2, ASTM D 638
Modulus of Elasticity	0.0920 GPa	ISO 527-2, ASTM D 638
Flexural Strength	2.50 MPa	DIN 53423, ISO 1209, ASTM D 790
Compressive Strength	1.50 MPa	DIN 53421, ISO 844, ASTM D 1621
Shear Modulus	0.0290 GPa	DIN 53294, ASTM C 273
Shear Strength	1.30 MPa	DIN 53294, ASTM C 273

Thermal Properties	Original Value	Comments
CTE, linear	38.1 µm/m-°C
Maximum Service Temperature, Air	180 °C	Heat Distortion Resistance; DIN 53424

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