• PT Youtube
  • CW Facebook
  • CW Linkedin
  • CW Twitter
11/28/2016 | 1 MINUTE READ

Sicomin epoxy, 3A foam receive fire classification

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Sicomin’s SR1125 infusion epoxy, combined with 3A’s AIREX T90 structural PET foam, has been certified to the EN45545-2 standard.


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Sicomin (Marseille, France), a formulator and supplier of high-performance epoxy systems, and 3A Composites Core Materials (Sims, Switzerland) reported on Nov. 22 that their epoxy resin PET foam sandwich panel tested to fire classification EN45545-2. This unified European fire protection standard assesses the performance of components through rigorous flammability, toxicity and smoke density tests and is recognized as the benchmark standard for the rail industry.

Sicomin’s SR1125 infusion epoxy, combined with the SGi128 gel coat system and 3A’s AIREX T90 structural PET foam was used to manufacture a 23-mm thick GRFP sandwich panel using a vacuum infusion process at 25°C. The component was then tested to evaluate its performance according to the EN45545-2 standard.

The panel tested comprised of:

  • Biaxial glass (1600g)/Sicomin’s SR1125 resin with SGi 128 white gelcoat (0.7 mm)
  • AIREX T90.100, 20 mm
  • Quadriaxial glass (1240g)/Sicomin SR1125 resin with SGi 128 white gelcoat (0.7 mm)

The combination of Sicomin and 3A Composites products were tested for Class R1 for the manufacture of rail interiors such as ceilings, window frames and side walls, and Class R7 for external parts such as body shell, walls and underframes. The foam sandwich panel achieved an overall fire hazard protection level of HL2.

“This is a significant accomplishment for Sicomin and our long standing supply partner, 3A Composites. It is very rewarding to receive verification that our high performance products perform successfully together to achieve exceptional standards in the rail industry,” says Philippe Marcovich, president of Sicomin.

Sicomin and 3A Composites emphasize that both companies can now offer rail customers a complete epoxy and core material infusion package with the EN45545-2 fire safety certification.

Panel test results are available on request; contact marc.denjean@sicomin.com or luana.cavalli@3acomposites.com


  • Composites: Materials and processes

    High strength at low weight remain the winning combination that propels composite materials into new arenas, but other properties are equally important. This article outlines the case for composites and introduces SourceBook's overview of the materials and processes used to make them.

  • A350 XWB update: Smart manufacturing

    Spirit AeroSystems actualizes Airbus’ intelligent design for the A350’s center fuselage and front wing spar in Kinston, N.C.

  • Tooling for composites: Evolutionary trajectory

    New technologies and improved methods keep up as tools get bigger and more complex and toolmaking gets ever more challenging.