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Article Dans Une Revue Journal of Thermal Analysis and Calorimetry Année : 2017

Thermal degradation and flammability of polyamide 11 filled with nanoboehmite

Laurent Ferry
Rodolphe Sonnier
Sylvain Petigny
  • Fonction : Auteur
Christophe Bert
  • Fonction : Auteur

Résumé

The flame-retardant effect of rod-like nanoboehmite was evaluated in biobased polyamide 11. Thermal analysis reveals that hydrated nanofillers modify the degradation pathway of polyamide 11 turning from a two-step to a single-step mechanism. The polymer thermal stability is increased due to interactions between polar groups and filler surface hydroxyl groups. Despite this improved thermal stability, polyamide 11/nanoboehmite composites exhibit shorter times to ignition in cone calorimeter. The phenomenon was attributed to changes in thermoradiative properties leading to a faster heating of the polymer surface. The most significant flame-retardant action is a reduction in heat release rate that was related to a barrier effect while endothermic water release seems to play a minor role.
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Dates et versions

hal-02892733 , version 1 (26-05-2021)

Identifiants

Citer

Laurent Ferry, Rodolphe Sonnier, José-Marie Lopez-Cuesta, Sylvain Petigny, Christophe Bert. Thermal degradation and flammability of polyamide 11 filled with nanoboehmite. Journal of Thermal Analysis and Calorimetry, 2017, 129 (2), pp.1029-1037. ⟨10.1007/s10973-017-6244-1⟩. ⟨hal-02892733⟩
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