Characterization of the thermal degradation and heat of combustion of Pinus halepensis needles treated with ammonium-polyphosphate-based retardants |
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| Authors: | A àgueda S Liodakis E Pastor and E Planas |
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| Institution: | (1) Centre d’Estudis del Risc Tecnol?gic (CERTEC), Universitat Polit?cnica de Catalunya, ETSEIB, Diagonal 647, pav. G, planta 2, 08028 Barcelona, Catalonia, Spain;(2) Laboratory of Inorganic and Analytical Chemistry, Department of Chemical Engineering, National Technical University of Athens (NTUA), 9 Iroon Polytechniou Street, 157-80 Athens, Greece; |
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| Abstract: | The thermal degradation behavior of P. halepensis needles treated with two ammonium-polyphosphate-based commercial retardants was studied using thermal analysis (DTG) under
nitrogen atmosphere. Moreover, for the same experimental material, the heat of combustion of the volatiles was estimated based
on the difference between the heat of combustion of the fuel and the heat contribution of the charred residue left after pyrolysis.
The heat of combustion of the volatiles was exponentially related to the retardant concentration of the samples. In the range
of retardant concentrations from 10 to 20% w/w the mean reduction percentage of the heat of combustion of the volatiles, with
respect to untreated samples, was 18%. |
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