Title :

Flame Retardancy of Lightweight Sandwich Composites

Author(s) :

Samyn, Fabienne [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Adanmenou, Roland [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Duquesne, Sophie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Jimenez, Maude [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Van Marle, Marieke [Auteur]
Weij, Sebastiaan [Auteur]

Journal title :

Journal of Composites Science

Abbreviated title :

J. Compos. Sci.

Volume number :

5

Pages :

274

Publisher :

MDPI AG

Publication date :

2021-10-14

ISSN :

2504-477X

English keyword(s) :

patterned polyester nonwoven
unsaturated polyester resin
sandwich composites
smoke toxicity
heat release

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

This study proposes an innovative solution to flame-retard a sandwich composite made of unsaturated polyester resin, glass fibre skins and polyester nonwoven core material. The strategy uses the core material as flame-retardant ...
Show more >This study proposes an innovative solution to flame-retard a sandwich composite made of unsaturated polyester resin, glass fibre skins and polyester nonwoven core material. The strategy uses the core material as flame-retardant carrier, while the resin is also flame-retarded with aluminum trihydroxide (ATH). A screening of the fire-retardant performances of the core materials, covered with different types of phosphorous flame-retardant additives (phosphate, phosphinate, phosphonate), was performed using cone calorimetry. The best candidate was selected and evaluated in the sandwich panel. Great performances were obtained with ammonium polyphosphate (AP422) at 262 g/m2. The core material, when tested alone, did not ignite, and when used in the laminate, improved the fire behaviour by decreasing the peak of heat release rate (pHRR) and the total heat release (THR): the second peak in HRR observed for the references (full glass monolith and sandwich with the untreated core) was suppressed in this case. This improvement is attributed to the interaction occurring between the two FR additives, which leads to the formation of aluminophosphates, as shown using Electron Probe Micro-Analysis (EPMA), X-ray Diffraction (XRD) and solid-state 31P Nuclear Magnetic Resonance (NMR). The influence of the FR add-on on the core, as well as the ATH loading in the matrix, was studied separately to optimize the material performances in terms of smoke and heat release. The best compromise was obtained using AP422 at 182 g/m2 and 160 phr of ATH.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2022-02-28T09:34:08Z
2022-03-02T09:19:48Z