Anisotropy of expandable graphite to explain its behavior as a flame-retardant

Bensabath, Tsilla; Sarazin, Johan; Bourbigot, Serge

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1177/0734904120969639

URL permanente :

http://hdl.handle.net/20.500.12210/60443

Titre :

Anisotropy of expandable graphite to explain its behavior as a flame-retardant

Auteur(s) :

Bensabath, Tsilla [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Sarazin, Johan [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bourbigot, Serge [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Journal of Fire Sciences

Nom court de la revue :

Journal of Fire Sciences

Numéro :

Pagination :

109-118

Éditeur :

SAGE Publications

Date de publication :

2020-11-25

ISSN :

0734-9041

Mot(s)-clé(s) en anglais :

Flame-retardant
expandable graphite
graphite worms
anisotropy
heat conductivity
thermal barrier

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

Expandable graphite is used as a flame-retardant in polymers. Its expansion on heating leads to a network of graphite worms which acts as a thermal barrier. However, mechanisms of action of worms are not yet well known. ...
Lire la suite >Expandable graphite is used as a flame-retardant in polymers. Its expansion on heating leads to a network of graphite worms which acts as a thermal barrier. However, mechanisms of action of worms are not yet well known. An original experimental approach is performed to study the heat dissipation in the network of worms. The network is made by the burning of polypropylene with 10 wt% expandable graphite during cone calorimeter experiment. After the burning, a hot spot is applied on the char. Temperature is monitored at different locations of sample during the combustion and after the application of the hot spot. During cone calorimetry, the char develops homogeneously over the whole sample. The hot spot test evidences the anisotropy of the entangled network of graphite worms. This anisotropy of heat conductivity allows the dissipation of heat in-plane and poorly out of plane, which explains the thermal barrier effect made by entangled worms.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet Européen :

MULTI-CONCEPTUAL DESIGN OF FIRE BARRIER: A SYSTEMIC APPROACH

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2022-02-28T10:37:17Z
2022-03-01T14:05:59Z
2023-01-04T12:05:53Z

Fichiers

JFS 2021 - Anisotropy of expandable graphite to explain its behavior as a flame-retardant.pdf
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Historique des modifications

Numéro de version	Lien	Date de modification
3	20.500.12210/60443*	2023-01-04T12:02:51Z
2	20.500.12210/60443.2	2022-03-01T13:37:09Z
1	20.500.12210/60443.1	2022-02-28T10:37:17Z

*Version sélectionnée

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