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Fire Behavior of Thermally Thin Materials in Cone Calorimeter

Abstract : In this study, a representative set of thermally thin materials including various lignocellulosic and synthetic fabrics, dense wood, and polypropylene sheets were tested using a cone calorimeter at different heat fluxes. Time-to-ignition, critical heat flux, and peak of heat release rate (pHRR) were the main parameters considered. It appears that the flammability is firstly monitored by the sample weight. Especially, while the burning rate of thermally-thin materials does never reach a steady state in cone calorimeter, their pHRR appears to be mainly driven by the fire load (i.e., the product of sample weight and effective heat of combustion) with no or negligible influence of textile structure. A simple phenomenological model was proposed to calculate the pHRR taking into account only three parameters, namely heat flux, sample weight, and effective heat of combustion. The model allows predicting easily the peak of heat release rate, which is often considered as the main single property informing about the fire hazard. It also allows drawing some conclusions about the flame retardant strategies to reduce the pHRR.
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Submitted on : Tuesday, April 20, 2021 - 1:32:16 PM
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Marouane El Gazi, Rodolphe Sonnier, Stéphane Giraud, Marcos Batistella, Shantanu Basak, et al.. Fire Behavior of Thermally Thin Materials in Cone Calorimeter. Polymers, MDPI, 2021, 13 (8), pp.1297. ⟨10.3390/polym13081297⟩. ⟨hal-03202983⟩



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