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Evonik Rohacell® 71 A Aircraft 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® 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.

Evonik Industries is the successor company to Degussa.

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
  • 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

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