新型钢结构防火涂料的防火性能评价

A. Kovalov, Y. Otrosh, V. Tomenko, O. Vasylyev
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引用次数: 0

摘要

摘要介绍了以国产材料为基础研制阻燃材料,提高阻燃钢结构耐火性能的成果。在国内抗膨胀材料的基础上,研制了新型阻燃剂。通过一系列试验研究,确定了耐火钢结构的加热温度。为此,在加热表面涂上阻燃剂的钢板形式的缩小尺寸的样品被使用。防火试验将研制的阻燃物质涂覆在防火钢板上,在被保护表面形成一层涂层,在其试验条件下采用标准的火灾温度装置来确定阻燃涂层的防火能力。分析了在火灾的标准温度模式下,在火灾影响条件下,用阻燃剂覆盖钢板未受热表面测定温度的实验结果。通过对导热系数反问题的求解,得到了防火涂层的热物理特性(导热系数和比容),可用于阻燃钢结构在任意火灾温度下的热计算加热。通过对形成的防火涂料的热物理特性进行验证,找出新型防火涂料的防火性能特点,保证防火钢结构的耐火性能。试验证明了所研制的防火涂料对钢结构防护的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
EVALUATION OF FIRE-PROTECTIVE ABILITY OF NEWLY CREATED FIRE-PROTECTIVE COATINGS OF STEEL STRUCTURES
Abstract. The results of the development of fire-retardant substances based on domestic materials to increase the fire resistance of fire-retardant steel structures are presented. New compositions of fire-retardant substances on the basis of domestic materials capable of swelling are developed. A series of experimental studies to determine the heating temperature of fire-resistant steel structures. For this purpose, samples of reduced size in the form of a steel plate with a flame retardant applied to the heating surface were used. Fire tests of fire-retardant steel plates coated with the developed fire-retardant substance forming a coating on the protected surface, in the conditions of their tests on the standard temperature of the fire using the installation to determine the fire-retardant ability of fire-retardant coatings. The results of experimental determination of temperature from an unheated surface of steel plates with a fire-retardant covering in the conditions of fire influence at a standard temperature mode of a fire are analyzed. Based on the obtained data (temperature in the furnace and from the unheated surface of steel plates with fire protection system) the solution of the inverse problems of thermal conductivity found thermophysical characteristics of fire protection coating (thermal conductivity and specific volume), which can be used for thermal calculation heating of fire-retardant steel structures at arbitrary fire temperatures. The thermophysical characteristics of the formed fire-retardant coating are substantiated to find the characteristics of the fire-retardant ability of the newly created fire-retardant coating and to ensure the fire resistance of fire-retardant steel structures. The efficiency of the developed fire-retardant coating for protection of steel structures is proved.
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