| 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® XT (= Extended Temperature) is a closed-cell rigid foam plastic based on PMI (polymethacrylimide) which does not contain any CFCs. ROHACELL® XT serves as a core material in advanced BMI-sandwich parts used in aircraft and space construction. Curing temperature up to 190C (374F). Curing pressure up to 0.7 Mpa (100 psi) and post-curing temperature (free-standing) up to 230C (446 F). Sandwich components using ROHACELL® XT as a 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® XT is easy to shape. Thermoformability is another advantage of the core material. Information provided by degussa. Evonik Industries is the successor company to Degussa. |
