THERMAL DEGRADATION ANALYSIS OF WOOD TREATED WITH FIRERETARDANTS

Authors

  • Igors Urbanovičs Latvijas Valsts Koksnes Ķīmijas Institūts
  • Pēteris Mekšs Latvijas Valsts Universitāte
  • Gaļina Dobele Latvijas Valsts Koksnes Ķīmijas Institūts

DOI:

https://doi.org/10.17770/etr2005vol1.2150

Keywords:

fire-retardants, wood, analytical pyrolysis, fast pyrolysis, products of pyrolisis

Abstract

Fire hazard control in wooden constructions is very important. For this purpose, fire retardants are used, which change the thermodestruction of wood and reduce combustion. The aim of the present research project was to study and compare the fire–protective properties of fire-retardants and to explain the chemical process of pyrolysis, namely, degradation in treated and untreated wood. The influence of fire-retardants on the wood thermal stability and the amount of volatile products was estimated on the basis of thermal analysis results. The volatile products (above 50%) of the pyrolysis process were identified, and the mechanism of the influence of fire-retardants on wood thermodestruction was studied.The presence of toxic compounds, formed by pyrolysis, was evaluated. The results of the study have shown that analytical pyrolysis is a modern, precise method for identifying the toxic compounds of volatile products in processes of both wood pyrolysis and combustion. The application of analytical pyrolysis enables a prompt determination of the fire protection degree of building wood constructions.

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Author Biography

  • Pēteris Mekšs, Latvijas Valsts Universitāte
    Ķīmijas Fakultāte

References

Soburs S.V. Celtniecības materiālu un konstrukciju ugunsaizsardzība. Maskava, Spectehnika, 1999, 106.

Dobele G., Rossinskaja G., Telysheva G., Meier D., O. Faix. Cellulose dehydratation and depolymerizat ion reactions during pyrolysis in the presence of phosphoric acid. J. of analitytical and applied pyrolysis. New York, Elsevier Science B.V., 1999, 307-317.

Thomas P. Wampler Practical applications of analytical pyrolysis. J. of analitytical and applied pyrolysis. New York, Elsevier Science B.V., 2004, 71, 1-12.

Latvijas Standarts. “ Koksnes aizsarg-līd zekļi. Testēšanas metodes. LVS 238, 1999, VSIA Latvijas Standarts, 8.

Dobele G., Dizhbite T., Rossinskaja G., Telysheva G., Meier D., Radtke S., Faix O. Pre-treatment of biomass with phosphoric acid prior to fast pyrolysis A promising method for obtaining 1,6- anhydrosaccharides in high yields. J. of analitytical and applied pyrolysis. New York, Elsevier Science B.V., 2003, 68-69, 197-211.

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Published

2005-06-18

How to Cite

[1]
I. Urbanovičs, P. Mekšs, and G. Dobele, “THERMAL DEGRADATION ANALYSIS OF WOOD TREATED WITH FIRERETARDANTS”, ETR, vol. 1, pp. 295–301, Jun. 2005, doi: 10.17770/etr2005vol1.2150.