Modeling heat transfers across a silicone-based intumescent coating

NYAZIKA, Tatenda; Jimenez, Maude; Samyn, Fabienne; Bourbigot, Serge

Document type :

Communication dans un congrès avec actes

DOI :

10.1088/1742-6596/1107/3/032012

Permalink :

http://hdl.handle.net/20.500.12210/2745

Title :

Modeling heat transfers across a silicone-based intumescent coating

Author(s) :

NYAZIKA, Tatenda [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Jimenez, Maude [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Samyn, Fabienne [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Bourbigot, Serge [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]

Conference title :

3rd European Symposium on Fire Safety Science, ESFSS 2018

City :

Nancy

Country :

France

Start date of the conference :

2018-09

Journal title :

Journal of Physics: Conference Series

Abbreviated title :

J. Phys.: Conf. Ser.

Publisher :

IOP Publishing

Publication date :

2018-11

ISSN :

1742-6588
1742-6596

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

Silicone-based intumescent coatings (SIBC) containing expandable graphite (EG) have been designed and studied in our laboratory and good physical barrier properties have been reported for both cellulosic and hydrocarbon ...
Show more >Silicone-based intumescent coatings (SIBC) containing expandable graphite (EG) have been designed and studied in our laboratory and good physical barrier properties have been reported for both cellulosic and hydrocarbon fire scenarios. The aim of this work is to develop a preliminary 2D numerical model of this coating behavior during a fire, which is, to the best of our knowledge, not reported yet in the literature for such coating. The fire performance of SIBC containing EG was evaluated in pure radiative heating conduction using a cone calorimeter heating element at 50kW/m2. The intumescent phenomenon of the SBIC containing EG was considered as a heat transfer problem with a moving boundary. Expansion was assumed to be homogenous and occurring in one dimension and a 2D numerical heat transfer model was developed, taking into account the moving boundary using the Arbitrary Langrangian-Eulerian Method (ALE) implemented in COMSOL Multiphysics V.5.3. A water cooled sample holder with a well-defined temperature condition was used to avoid the assumption of the adiabatic conduction at the backside of the sample. The model was consistent with experimental results and it was able to reasonably predict the temperature profiles. However, it did not capture the temperature increase at times higher than 450s because of cracking in the silicone-based intumescent coating.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

European Project :

MULTI-CONCEPTUAL DESIGN OF FIRE BARRIER: A SYSTEMIC APPROACH

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2019-01-07T11:56:27Z
2019-03-27T10:21:48Z
2019-05-23T09:06:30Z
2019-06-11T13:11:14Z

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Except where otherwise noted, this item's license is described as Attribution 3.0 United States

Version history

Version	Link	Modification date
4	20.500.12210/2745*	2019-06-11T13:10:49Z
3	20.500.12210/2745.3	2019-05-23T09:04:32Z
2	20.500.12210/2745.2	2019-03-27T10:18:56Z
1	20.500.12210/2745.1	2019-01-07T11:56:27Z

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