UDC 614.849
The article discusses a new approach to quality control of flame-retardant coating of metal structures using a portable high-temperature heating device. A critical analysis of the problem of increasing the fire resistance of metal structures using bulging flame-retardant coatings has been carried out. Five samples of flame retardants seized from the protection facilities were tested. The analysis by IR spectroscopy showed that all the samples belong to flame-retardant bulging acrylic-based coatings of complex composition. As part of the assessment of the reliability of the results, the tests were carried out using the existing laboratory method in accordance with GOST R 59637-2021, as well as using a new technique based on the use of a developed portable device. Both methods showed similar results. To numerically evaluate and compare the results obtained and confirm the operability of the developed methodology, the results were analyzed using the statistical criteria of Kohren and Grubbs. The values of the calculated criteria confirmed the comparability of the obtained results in terms of uniformity and absence of gross errors with the methodology of GOST R 59637-2021. The results obtained confirm the operability of a new technique based on the use of a portable device for high-temperature heating of thin flame-retardant bulging coatings applied to a metal substrate. The practical significance of the results obtained is described, as well as the prospects for further development of the topic
vspuchivayuschiesya ognezaschitnye pokrytiya, metod proverki kachestva ognezaschitnoy obrabotki, pozharnaya bezopasnost' metallokonstrukciy
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