Maze running into intumescence: mechanistic aspects in polypropylene

Bourbigot, Serge; Sarazin, Johan; Solarski, Fabienne; Jimenez, Maude

Document type :

Communication dans un congrès avec actes

DOI :

10.1088/1742-6596/1107/3/032001

Permalink :

http://hdl.handle.net/20.500.12210/2744

Title :

Maze running into intumescence: mechanistic aspects in polypropylene

Author(s) :

Bourbigot, Serge [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Sarazin, Johan [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Solarski, Fabienne [Auteur]

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

The concept of intumescence was applied to make flame retarded polypropylene (PP). This paper examines two types of intumescence in PP) based on expandable graphite (EG, physical expansion) and on modified ammonium ...
Show more >The concept of intumescence was applied to make flame retarded polypropylene (PP). This paper examines two types of intumescence in PP) based on expandable graphite (EG, physical expansion) and on modified ammonium polyphosphate (AP760, chemical expansion). Reaction to fire of PP containing EG and AP760 was first evaluated by cone calorimetry. The incorporation of intumescent additives at relatively low loading (10 wt%) in PP permits the reduction by 70% of pHRR. The mode of action occurs via the formation of an expanded carbonaceous layer in all cases. The protective coating acts mainly as heat barrier in the case of the formulations containing AP760 or as heat dissipater with EG. The incorporation of small amount of EG in PP-AP760 modifies heat transfer in the coating creating a strong anisotropy. Upon expansion graphite worms align normal to the surface increasing the transverse heat conductivity (lower efficiency of the heat barrier) and hence, decreasing the fire performance (decrease by only 30% of pHRR). Kinetic analysis was then performed to quantify the thermal stability of the intumescent systems. It reveals that the intumescent additives do not modify the reactional scheme of the PP thermal decomposition but they increase slightly the thermal stability of the intumescent systems.Show less >

Language :

Anglais

Audience :

Internationale

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 :

2019-01-07T11:53:17Z
2019-03-27T10:28:11Z

Files

Bourbigot_2018_J._Phys.__Conf._Ser._1107_032001.pdf
Version éditeur
Open access
Access the document

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

Version	Link	Modification date
2	20.500.12210/2744*	2019-03-27T10:26:01Z
1	20.500.12210/2744.1	2019-01-07T11:53:17Z

Maze running into intumescence: mechanistic ...

BibTeX

CSV

Excel

RIS

Files

Version history

Maze running into intumescence: mechanistic ... BibTeX CSV Excel RIS

Files

Version history

Maze running into intumescence: mechanistic ...

BibTeX

CSV

Excel

RIS