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FAR-compliant, Epoxy FST Adhesives for Aircrafts by L&L Products

Published on 2017-04-19. Author : SpecialChem

Altorf, France -- L&L Products has worked to develop a new generation of materials dedicated to the construction of aircraft interiors. The main focus has been to dramatically improve the Health & Safety properties of the materials using innovative new components to eliminate REACH classified substances such as borate zinc, trioxide antimony, and phenolic resins while attaining the desired Fire, Smoke and Toxicity (FST) properties.

Epoxy FST Adhesives

New Generation of Aerospace Grade Materials

Amongst these products are five new epoxy FST adhesives which are compliant to the latest FAR 25853 regulation. These products are now available in cartridges or pails, were qualified by major OEMs and are currently used for insert or sandwich panel bonding.

This adhesive product family performs:
  • With a 5 to 90 minute pot life
  • Passes non-sag testing
  • Has rheology suitable for easy injection (such as needed when bonding inserts).


  • These new structural adhesives improve the efficiency of the bonding process and help reduce production costs while improving fire safety.
  • They cure at room temperature and thus avoid the need for a heat source, reducing energy cost.

Additionally, a new generation of FST splice film is now also available and does not need frozen storage. These new products possess a high expansion rate, up to 180%, which can be reached with low curing temperatures (starting at 120°C).

L&L Acoustic

L&L Products has also developed new acoustic materials used to dampen the vibration of sandwich panels (floors, side walls, ceilings, partitions) in order to improve the acoustic comfort in the cabin for a superior passenger experience. The material is embedded in the honeycomb leading to a damping functionalization of the panel and further avoiding additional and costly operations to bond damping patches externally. The product maintains excellent adhesion properties of the prepreg skin (phenolic or epoxy) to the core and is fully compliant to FST regulations.

About L&L Products

L&L Products is a technology driven business-to-business Company that has unique expertise in static sealing, acoustics, vibration reduction, structural reinforcements and composite components for automotive, aerospace, commercial vehicle and other industrial applications.

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Source: L&L Products
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