Titre :

Characterization of thermo-physical properties of EVA/ATH: Application to gasification experiments and pyrolysis modeling

Auteur(s) :

Girardin, Bertrand [Auteur]
Fontaine, Gaelle [Auteur]
Laboratoire de structures et propriétés de l'état solide - UMR 8008 [LSPES]
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]
Försth, Michael [Auteur]
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Materials

Numéro :

8

Pagination :

7837-7863

Éditeur :

MDPI

Date de publication :

2015-11-20

ISSN :

1996-1944

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]

The pyrolysis of solid polymeric materials is a complex process that involves both chemical and physical phenomena such as phase transitions, chemical reactions, heat transfer, and mass transport of gaseous components. For ...
Lire la suite >The pyrolysis of solid polymeric materials is a complex process that involves both chemical and physical phenomena such as phase transitions, chemical reactions, heat transfer, and mass transport of gaseous components. For modeling purposes, it is important to characterize and to quantify the properties driving those phenomena, especially in the case of flame-retarded materials. In this study, protocols have been developed to characterize the thermal conductivity and the heat capacity of an ethylene-vinyl acetate copolymer (EVA) flame retarded with aluminum tri-hydroxide (ATH). These properties were measured for the various species identified across the decomposition of the material. Namely, the thermal conductivity was found to decrease as a function of temperature before decomposition whereas the ceramic residue obtained after the decomposition at the steady state exhibits a thermal conductivity as low as 0.2 W/m/K. The heat capacity of the material was also investigated using both isothermal modulated Differential Scanning Calorimetry (DSC) and the standard method (ASTM E1269). It was shown that the final residue exhibits a similar behavior to alumina, which is consistent with the decomposition pathway of EVA/ATH. Besides, the two experimental approaches give similar results over the whole range of temperatures. Moreover, the optical properties before decomposition and the heat capacity of the decomposition gases were also analyzed. Those properties were then used as input data for a pyrolysis model in order to predict gasification experiments. Mass losses of gasification experiments were well predicted, thus validating the characterization of the thermo-physical properties of the materialLire 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 :

2019-05-16T17:08:28Z
2023-01-11T10:45:46Z