Evonik Rohacell® 71 WF High Heat Grade Polymethacrylimide (PMI) Foam

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Evonik Rohacell® 71 WF High Heat 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® WF (= grade with increased heat distortion resistance) is a closed-cell rigid foam plastic based on PMI (polymethacrylimide) which does not contain any CFCs. ROHACELL® WF serves as a core material in advanced sandwich components used in aircraft and spacecraft construction. Curing temperature up to 180C (356F). Curing pressure up to 0.70 MPa (100 psi). Sandwich components using ROHACELL® WF 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® WF is easy to shape. Thermoformability is another advantage of the core material. Information provided by degussa. Evonik Industries is the successor company to Degussa.
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Available Properties

Density, DIN 53420, ISO 845, ASTM D 1622
Tensile Strength at Break, DIN 53455, ISO 527-2, ASTM D 638
Elongation at Break, DIN 53455, ISO 527-2, ASTM D 638
Modulus of Elasticity, ISO 527-2, ASTM D 638
Flexural Strength, DIN 53423, ISO 1209, ASTM D 790
Compressive Strength, DIN 53421, ISO 844, ASTM D 1621
Poissons Ratio, Calculated
Shear Modulus, DIN 53294, ASTM C 273
Shear Strength, DIN 53294, ASTM C 273
Maximum Service Temperature, Air, DIN 53424, Heat Distortion Resistance

Property Data

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Manufacturer Notes:
Evonik Corporation (Former Evonik Degussa GmbH)

Category Notes
Plastic

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