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Characterization of thermo-physical properties of EVA/ATH: Application to gasification experiments and pyrolysis modeling
R2Fire Group/UMET-UMR CNRS 8207, Ecole Nationale Supérieure de Chimie de Lille, Unité Matériaux et Transformations (UMET), École Nationale Supérieure de Chimie de Lille, University of Lille.
R2Fire / UMET – UMR CNRS 8207, ENSCL, Avenue Dimitri Mendeleïev – Bât. C7a, CS 90108, 59652 Villeneuve d’Ascq, Unité Matériaux et Transformations (UMET), École Nationale Supérieure de Chimie de Lille, University of Lille.
R2Fire / UMET – UMR CNRS 8207, ENSCL, Avenue Dimitri Mendeleïev – Bât. C7a, CS 90108, 59652 Villeneuve d’Ascq, Unité Matériaux et Transformations (UMET), École Nationale Supérieure de Chimie de Lille, University of Lille.
R2Fire / UMET – UMR CNRS 8207, ENSCL, Avenue Dimitri Mendeleïev – Bât. C7a, CS 90108, 59652 Villeneuve d’Ascq, Unité Matériaux et Transformations (UMET), École Nationale Supérieure de Chimie de Lille, University of Lille.
Vise andre og tillknytning
2015 (engelsk)Inngår i: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 8, nr 11, s. 7837-7863Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [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 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 material

sted, utgiver, år, opplag, sider
2015. Vol. 8, nr 11, s. 7837-7863
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URN: urn:nbn:se:ltu:diva-3356DOI: 10.3390/ma8115428ISI: 000365924500051PubMedID: 28793682Scopus ID: 2-s2.0-84949654422Lokal ID: 12c3edaf-4bfd-4bec-b75e-56616a116bceOAI: oai:DiVA.org:ltu-3356DiVA, id: diva2:976214
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Validerad; 2016; Nivå 2; 20151222 (andbra)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2020-01-28bibliografisk kontrollert

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