Epsomite as flame retardant treatment for wood: preliminary study

The effect of epsomite as flame retardant for wood has been investigated and compared with a commercial boron salt. Both flame retardants have been introduced into wood samples by vacuum impregnation. Epsomite is a hydrated sulphate salt with a water solubility of 731 g¿L-1 at room temperature. Than...

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Bibliographic Details
Published in:Construction & building materials 2016-09
Main Authors: Elvira-León, J.C, Chimenos Ribera, Josep Ma, Isábal, C, Monton, J, Formosa Mitjans, Joan, Haurie, Laia
Format: Article
Language:English
Subjects:
Fireproofing agents
Fusta
Magnesi
Magnesium
Retardants de flama
Wood
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Summary:The effect of epsomite as flame retardant for wood has been investigated and compared with a commercial boron salt. Both flame retardants have been introduced into wood samples by vacuum impregnation. Epsomite is a hydrated sulphate salt with a water solubility of 731 g¿L-1 at room temperature. Thanks to this high solubility it was possible to obtain elevated epsomite loadings in comparison with the borax salt. Flame retardancy was evaluated by means of the limiting oxygen index, the dripping test and the exposition to a direct flame (Bunsen test). The results showed that the addition of epsomite increases the limiting oxygen index, delays the time to ignition and the evolution of the temperatures trough the wood.
ISSN:0950-0618