Titre :

Flame Retardancy of PA6 Using a Guanidine Sulfamate/Melamine Polyphosphate Mixture

Auteur(s) :

Coquelle, Mathieu [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Duquesne, Sophie [Auteur]
Laboratoire de structures et propriétés de l'état solide - UMR 8008 [LSPES]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Casetta, Mathilde [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Sun, J [Auteur]
University of Chinese Academy of Sciences [Beijing] [UCAS]
Gu, Xiaoyu [Auteur]
Beijing University of Chemical Technology [BUCT]
Zhang, Sheng [Auteur]
Beijing University of Chemical Technology [BUCT]
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Polymers

Numéro :

7

Pagination :

316-332

Éditeur :

MDPI

Date de publication :

2015-02

ISSN :

2073-4360

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

Polyamide 6 (PA6) is a widely-used polymer that could find applications in various sectors, including home textiles, transportation or construction. However, due to its organic nature, PA6 is flammable, and flame-retardant ...
Lire la suite >Polyamide 6 (PA6) is a widely-used polymer that could find applications in various sectors, including home textiles, transportation or construction. However, due to its organic nature, PA6 is flammable, and flame-retardant formulations have to be developed to comply with fire safety standards. Recently, it was proposed to use ammonium sulfamate as an effective flame retardant for PA6, even at low loading content. However, processing issues could occur with this additive considering large-scale production. This paper thus studies the use of another sulfamate salt—guanidine sulfamate (GAS)—and evidences its high efficiency when combined with melamine polyphosphate (MPP) as a flame retardant for PA6. A decrease of the peak of the heat release rate by 30% compared to pure PA6 was obtained using only 5 wt% of a GAS/MPP mixture in a microscale calorimeter. Moreover, PA6 containing the mixture GAS/MPP exhibits a Limiting Oxygen Index (LOI) of 37 vol% and is rated V0 for the UL 94 test (Vertical Burning Test; ASTM D 3801). The mechanisms of degradation were investigated analyzing the gas phase and solid phase when the material degrades. It was proposed that MPP and GAS modify the degradation pathway of PA6, leading to the formation of nitrile end-group-containing molecules. Moreover, the formation of a polyaromatic structure by the reaction of MPP and PA6 was also shown.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2019-05-16T16:45:15Z
2023-01-18T11:04:44Z