Influence of different fire-fighting resistants on thermo-oxidative decomposition wood
DOI:
https://doi.org/10.18321/cpc21(1)3-16Keywords:
wooden structures, thermal analysis, thermal-oxidative decomposition, fire resistance, fire protection, flame retardants, catalytic dehydration, coke formation, coal, charring, oxidation.Abstract
Thermal analysis methods (TG, DTG) in air were used to study the effect of flame retardants, which implement various mechanisms of fire retardant action including catalytic dehydration, coke formation, on the features of thermal-oxidative decomposition of wood. Fundamental differences have been established in the ability of fire retardants, which have different chemical nature of their components and mechanisms of fire retardant action, to change individual stages of thermooxidative decomposition of wood. The effect of a flame retardant on the reactive-oxidizing ability of the carbon residue is shown. The characteristic stages of formation of the coal layer and its oxidation undergo the greatest changes. Different effectiveness of flame retardants in reducing the intensity of the process of oxidation of the coal substrate and heat release has been established. During the thermal analysis of the studied samples, characteristics were established that can be used in the development of fire protection means to reduce the fire hazard and increase the fire resistance of wooden structures.
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