Impact of hygrothermal ageing on the fire behavior of flame retarded epoxy/flax composites - IMT Mines Alès Access content directly
Conference Papers Year : 2022

Impact of hygrothermal ageing on the fire behavior of flame retarded epoxy/flax composites

Abstract

Natural fibre reinforced composites arouse a growing interest in many applications due to their low carbon footprint and their interesting mechanical performance. In some sectors, fire specifications are also required and lead to the use of flame retardant additives. Due to the hydrophilic nature of the reinforcement, biocomposites are sensitive to humid ageing [1]. Therefore the question arises: what is the influence of flame retardants on ageing behavior and the final fire performance of these materials? In this study, flax fibre reinforced epoxy composites flame retarded by Aluminium diethyl phosphinate or DOPO were submitted to ageing in different humid atmospheres or by immersion in liquid water. Water sorption kinetics of FR biocomposites were studied and discussed with regard to Fick absorption model [2]. Their fire properties were also studied using cone calorimeter. The influence of ageing is only noticeable at high water content. The effect on the HRR curve depends on the nature of FR and is mainly governed by the way water molecules are absorbed into the materials.
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Dates and versions

hal-03683560 , version 1 (31-05-2022)

Identifiers

  • HAL Id : hal-03683560 , version 1

Cite

Laurent Ferry, Charlotte Campana, Rodolphe Sonnier, Romain Léger, Patrick Ienny. Impact of hygrothermal ageing on the fire behavior of flame retarded epoxy/flax composites. ECOFRAM 2022 - 3e conférence internationale sur les additifs et matériaux ignifuges respectueux de l'environnement, IMT Mines Alès; Université de Montpellier; École d'ingénieurs de chimie de Montpellier (ENSCM); Société Chimique de France (SCF), May 2022, Alès, France. ⟨hal-03683560⟩
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