Abstract
Fireproof fabrics are commonly used for protection of fireguards. Such materials must be characterized by improved heat resistance, especially to radiation and flame. In this paper, fireproof fabric (NATAN and PROTON—trademark names) was covered with Ti-Si-N nanocomposite reflective coating using magnetron sputtering. The fabrics were subjected to heat radiation of heat flux density from 0.615 to 2.525 kW/m2. A testing stage equipped with a heat source, thermal imaging camera and thermocouples was used. Two variants of the coatings were studied: Ti-Si and (Ti,Si)N considering different thicknesses of layers. The temperature increment and time to reach the pain threshold (60 °C) which corresponds approximately to a 2nd-degree burn according to Henriques criterion were analyzed. In addition, the microstructural analysis of the samples using a scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS) system was performed. The improvement of heat resistance showed for Ti-Si-coated PROTON and NATAN for all tested heat flux densities. Time to reach 60 °C for PROTON fabric increased maximally from 11.23 s (without coating) to 13.13 s (Ti-Si coating) for heat flux density of 0.615 kW/m2 and for NATAN—maximally from 7.76 s (without coating) to 11.30 s (Ti-Si coating) for the same heat flux density.
Highlights
Fireproof fabrics are widely used for constructing fireguards’ clothing
The aim of this study is to investigate the fabrics used for firefighting clothing—NATAN
PROTON produced by ANDROPOL, covered with a nanocomposite layer, subjected to thermal loads resulting from thermal radiation
Summary
Fireproof fabrics are widely used for constructing fireguards’ clothing. The risks to firefighters are external, and the unpredictable nature of their work requires optimally universal solutions. Reflective metallic layers are applied to fabrics intended forstrength, the production of pro- inThe basic features of protective materials are: mechanical good thermal tective clothing, mainly by sticking a thin foil [15]. The effectiveness knitted fabrics with change designed and 30 produced for use under-barevaluation consists in phase comparing thematerials temperature value after s to the Stoll andinChianta rier protective clothing [26], polyurethane-coated knitted fabricsas[27,28], highly durable diagram—Figure. The aim of this study is to investigate the fabrics used for firefighting clothing—NATAN and PROTON (trademark names) produced by ANDROPOL, covered with a nanocomposite layer, subjected to thermal loads resulting from thermal radiation. On the basis of the literature review, it can be concluded that the study is novel in the area the application and testing of Ti-Si-N coating as a reflective barrier to heat radiation
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