Influence of dry mixtures in a coating on the effectiveness of wood protection from the action of a magnesium flame

Authors

  • Yuriy Tsapko National University of Life and Environmental Sciences of Ukraine Heroiv Oborony str., 15, Kyiv, Ukraine, 03041 Kyiv National University of Construction and Architecture Povitroflotsky ave., 31, Kyiv, Ukraine, 03037, Ukraine https://orcid.org/0000-0003-0625-0783
  • Аleksii Tsapko National University of Life and Environmental Sciences of Ukraine Heroiv Oborony str., 15, Kyiv, Ukraine, 03041, Ukraine https://orcid.org/0000-0003-2298-068X

DOI:

https://doi.org/10.15587/1729-4061.2017.111106

Keywords:

metallic combustion, mass loss, charring, protective means for wood, extinguishing powders

Abstract

We carried out an analysis of the occurrence of fires and explosions on objects of storage of explosive products and established that one of the greatest risks is a fire hazard. Since the storage of such products involves the use of wood, both in building structures and packaging products, it is important to establish effectiveness of fire protection at high temperatures and influence of components that are part of the composition, and their role in ensuring fire resistance and fire protection mechanisms. This makes it possible to develop effective methods and means for extinguishing fires in such classes and take into account their peculiarities. We proposed a composition to counteract a high temperature. The basis of its mixture consisted of fire retardants (ammonium polyphosphate), gas formers (melamine), carbohydrates (pentaerythritol), and high-temperature fillers based on mineral substances. Studies showed that charring depth under the action of magnesium flame for untreated wood samples was larger than 16÷20 mm. Instead, after the fire protection treatment of wood with dry mixtures coating, the charcoal depth did not exceed 5÷6 mm. This allows us to conclude that the fire protection of wooden structures and the use of dry mixtures for the localization of magnesium flame is appropriate.

Extinguishing of the magnesium flame with samples of dry mixtures coating with the addition of aluminosilicate microspheres, perlite, basalt scales, metallurgical sludge and ashes in the amount of 10 % showed the intensity of the supply of powder in the extinguishing of magnesium flame in the range of 0.034÷0.041 g/(cm2·s), which is significantly lower than the sodium chloride supply rate. The results of determination of the efficiency of extinguishing magnesium flame with dry mixtures coating indicate the ambiguous effect of fillers on the change in supply rate during flame extinguishing. The greatest effect is demonstrated by the mixture with the addition of basaltic scales, its supply rate is the lowest when extinguishing the magnesium flame and is 0.034 g/(cm2·s)

Author Biographies

Yuriy Tsapko, National University of Life and Environmental Sciences of Ukraine Heroiv Oborony str., 15, Kyiv, Ukraine, 03041 Kyiv National University of Construction and Architecture Povitroflotsky ave., 31, Kyiv, Ukraine, 03037

Doctor of Technical Sciences

V. D. Glukhovsky Scientific Research Institute for Binders and Materials

Аleksii Tsapko, National University of Life and Environmental Sciences of Ukraine Heroiv Oborony str., 15, Kyiv, Ukraine, 03041

Posgraduate student

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Published

2017-10-24

How to Cite

Tsapko, Y., & Tsapko А. (2017). Influence of dry mixtures in a coating on the effectiveness of wood protection from the action of a magnesium flame. Eastern-European Journal of Enterprise Technologies, 5(10 (89), 55–60. https://doi.org/10.15587/1729-4061.2017.111106

Issue

Vol. 5 No. 10 (89) (2017): Ecology

Section

Ecology

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Copyright (c) 2017 Yuriy Tsapko, Аleksii Tsapko

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