Study of the fire resistance of coatings for wood with the addition of mineral fillers
Keywords:
wood, mass loss, charring, intumescent coatings for wood, surface treatment, protection efficiencyAbstract
Description of the behavior of
fire retardant coatings, at the time of formation
of the thermal insulation structure, is a separate and difficult task. In general, covers all the
stages of the process of thermal protection: as
the separation of gases, heat transfer, and further ‒ the swelling of the coating, which is
formed during fire protection. To determine
the fire protection efficiency in the coatings
developed, studies have been carried out on
determining the combustibility of wood in
terms of mass loss and increase in the temperature of flue gases, and it has been established
that when coating the coatings, the mass loss
of wood does not exceed 3% and the temperature does not exceed 160 °C. The results of the
determination of the coverage efficiency for
the system have shown that under the influence of the high-temperature flame of burning
of the material and the loss of the mass of the
coating is reduced due to the formation of
high-temperature compounds, while the time
to reach the limiting temperature increases.
Studies on determining the quality of fire protection wood treatment by coating showed that
the rate of cooking for a rough sample of wood
was more than 2 mm/min, for fire-proof samples ‒ did not exceed 0.5 mm/min, which
makes it possible to conclude that it is advisable to use them.
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