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Постійне посилання на фондhttps://repositary.knuba.edu.ua/handle/987654321/30

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  • Документ
    Increase of fire resistance of coating wood with adding mineral fillers
    (Transbud-2018, 2018) Tsapko, Y.; Kyrycyok, V.; Tsapko, A.; Bondarenko, O.; Guzii, S.
    The article covers all the stages of the process of fire protection: as the separation of gases, heat transfer, the swelling of the coating, which is formed during by the action of fire. 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 mass loss of coated wood does not exceed 3% and the temperature does not exceed 160°C. The results of the determination of the protection efficiency for the system have shown that under the influence of the hightemperature 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.
  • Документ
    Research of Mechanism of Fire Protection With Wood Lacquer
    (2020) Tsapko, Yuriy; Lomaha, Vasyl; Bondarenko, Olga; Sukhanevych, Maryna
    The effect of the composition on the weight loss of wood protected by a coating based on inorganic and organic substances in the process of thermal exposure, which is a feature of the study of the flame retardant effectiveness of the composition, is investigated. The solution of this problem is carried out by specially developed methods. The influence of fire protection under the influence of high-temperature heat flux on the change in the process of loss of mass of fire-protected wood is determined and the mechanism of kinetics of action of the composition is characterized, which is characterized by a decrease in the speed of flame propagation and mass loss. The results of thermogravimetric studies determined the weight loss of the coatings as a function of temperature, the results of which investigated the activation energy at the temperature decomposition of the coatings and found that for wood it was 36.56 kJ / mol, and in the case of fire protection it increased 2.3 times. which makes it possible to conclude that it is advisable to use lacquer varnish to improve the fire retardant efficiency of wood. Thus, for the specimen of fire-retardant lacquer wood, there is a gradual decrease in temperature, ie, the work of the coating is fixed, and, accordingly, the activation energy is increased during the decomposition of the wood. In order to establish the flame retardant efficiency in the application of high-temperature blowing lacquer, studies were conducted to determine the combustibility index of wood by mass loss, flame spread and temperature increase of flue gases and found that when processing wood goes to the group of combustible materials with a burning index.
  • Документ
    Modeling the process of moisture diffusion by a flameretardant coating for wood
    (Eastern-European Journal of Enterprise Technologies, 2020) Tsapko, Yu.; Tsapko, A.; Bondarenko, O.
    At present, among the most common building materials is wood, which, in terms of its flammability group, belongs to the group of combustible materials of medium flammability. To reduce these deficiencies, fire-retardant treatment provides wood with the capability to withstand the effects of flame and its propagation. One of the ways to protect wood from fire is to apply a fireproof coating on its surface, which for some time prevents heat from accessing the wood.