The Fire Resistance of Transformable Barriers: Influence of the Large-Scale Factor

IF 3 3区农林科学 Q2 ECOLOGY Fire-Switzerland Pub Date : 2023-07-31 DOI:10.3390/fire6080294

M. Gravit, Daria Shabunina, O. Nedryshkin

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Abstract

The paper presents the results of the development of a multi-layer protective product, which is a transformable fire barrier, installed in buildings and structures to limit the spread of flame, heat flow and smoke. Based on the results of the simulation of eight samples of fire curtains, three promising samples of different compositions were selected, demonstrating a fire resistance limit on the loss of thermal insulating capacity (I) of 30 min. During the small-scale tests, it was found that the multilayer fabric of the following composition was promising: heat-treated silica fabric, aluminum foil, mineral fiber heat insulation material, stitched by needle-punching with silica thread, fabric reinforced with fiberglass mesh and stitched through with basalt thread, with seams treated with a fire-resistant elastic sealant. According to the results of a standard large-scale experimental study, a fire curtain with a loss of integrity not less than 60 min, and a loss of thermal insulating ability not less than 15 min were obtained. The results of the study assess the impact of the scale factor on the fire resistance limit of fire curtains in a fire.

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可转换护栏的耐火性能：大尺度因素的影响

本文介绍了多层防护产品的开发结果，这是一种可转换的防火屏障，安装在建筑物和结构中，以限制火焰、热流和烟雾的传播。基于对八个防火幕样品的模拟结果，选择了三个不同成分的有希望的样品，证明了隔热能力损失（I）的耐火极限为30分钟。在小规模测试中，发现以下成分的多层织物是有希望的：热处理的二氧化硅织物、铝箔，矿物纤维隔热材料，用硅胶线针刺缝合，用玻璃纤维网加固的织物，用玄武岩线缝合，接缝用耐火弹性密封剂处理。根据标准大型实验研究的结果，获得了完整性损失不小于60分钟、隔热能力损失不小于15分钟的防火幕。研究结果评估了比例因子对火灾中防火幕耐火极限的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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