Epoxy resin prepreg E721-FR

thermosetting resinfor aeronautics

E721-FR is a 120°C (248°F) cure modified epoxy prepreg of medium viscosity. E721-FR offers excellent structural properties, flame retardancy and exceptional toughness allowing direct lamination to honeycomb without the use of a film adhesive. E721-FR is designed for structural applications. If fire retardant properties are not required, refer to Toray E720. Product benefits/features Direct lamination to honeycomb without the use of resin film Fire resistant under FAR 25.853 Appendix F material test criteria (ii) Market segments Sport & Recreation Motorsport & Formula 1 Automotive Energy Medical Consumer Electronics Aircraft Interiors Industrial Details Product category - Thermoset Prepreg Processing - Out of Autoclave / Vacuum bag Press forming Autoclave Resin type - Epoxy Tg (Dry, onset) - 120 °C / 248 °F Cure temperature (Optimal) - 120 °C / 248 °F Cure temperature (Lowest) - 120 °C / 248 °F Cure temperature (Highest) - 120 °C / 248 °F Out life - 60 days