FIRE RETARDANT EPOXY PREPREGS

Fire Retardant Epoxy Prepregs

Notus EPFR-609

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Notus EPFR-609

Notus EPFR-609 is a market leading fire-retardant epoxy prepreg system that combines exceptional FST performance with user-friendly handling characteristics and a long out life.

EPFR-609 is ideal for small to very large structural parts that require a Tg in the range of 100 to 120°C. It can be cured at temperatures from 85 to 120°C and is suitable for low pressure/vacuum curing processes. Notus EPFR-609 has a very long out life at room temperature (60 days at 21-23°C) and can be kept frozen for up to 18 months @-18°C.

EPFR-609 is the perfect choice for Architecture, Aerospace, Rail and other Industrial sectors where reaction to fire and low smoke toxicity are required. Notus has carried out extensive testing, with EPFR-609 complying with FAR 25.853 and NFPA 285 as well as ASTM E84 Class A and UL94 V0.

Controlled resin flow and high peel strength on honeycomb cores mean EPFR-609 is well suited to sandwich structures as well as monolithic laminates. EPFR-609 is available in all prepreg and N1-Preg formats and can also be supplied as a supported resin film.

Features and Benefits

  • Exceptional fire performance.
  • Low exotherm risk, even for thick laminates.
  • Long out-life & shelf-life.
  • High strength bonding with honeycomb and foam cores.

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Fire Retardant Epoxy Prepregs

Notus NE11FR - Fire Retardant Intumescent Epoxy Film

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Notus NE11FR - Fire Retardant Intumescent Epoxy Film

NE11FR is an intumescent epoxy resin film formulated to meet the most stringent fire standards.

This thin film epoxy system provides exceptional fire protection in architectural applications such as wall assemblies, roof or ceiling assemblies and individual structural members as well as being suitable for any other components with a fire retardant requirement. Notus recommends the use of NE11FR films with the EPFR 609 prepreg system as this combination has successfully passed both the ASTM E84 and NFPA 285 tests.

NE11FR film can be used directly against an appropriately release treated mould surface with prepreg layers laid up behind it, or as a last layer in the mould. It is cured under vacuum (at temperatures of 80-120˚C) with the prepreg laminate in a single step, removing the need for secondary process steps and FR coatings.

In a fire situation, the NE11FR film reacts to form a stable, insulating char of 5-25mm thickness which protects the laminate substrate from ignition and reduces the generation of any toxic gasses.

Features and Benefits

  • Passes NFPA 285 and Class A at ASTM E84 (with EPFR-609 prepreg).
  • Stable insulating char provides fire barrier to laminate substrate.
  • Flexible Curing temperature (80 to 120°C).
  • Low pressure moulding capability (0.85 to 3.5 Bar).
  • Long out life and shelf life (60 days at 21°C and 18 months at -18°C).
  • Cured finish is smooth and easy to paint for architectural components. Easy to handle and lay up in the mould.

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