Evaluating the performance of the outer layer of extreme heat protective clothing using different woven structures.

IF 1.6 4区医学 Q3 ERGONOMICS International Journal of Occupational Safety and Ergonomics Pub Date : 2025-12-01 Epub Date: 2025-03-06 DOI:10.1080/10803548.2025.2468156

Rochak Rathour, Md Jawad Ibn Amin, Md Azharul Islam, Apurba Das, Ramasamy Alagirusamy

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Abstract

This study examines the interplay of weave patterns, picks per inch (PPI) and key performance metrics including heat protective performance (HPP), air permeability, thermal resistance and water vapor transmission rate (WVTR). Three weave structures (twill, sateen and honeycomb) using Nomex-IIIA yarn were tested. Heat flux of 80 ± 2 kW/m² was applied, combining flame and radiative heat. The honeycomb weave exhibited superior heat protection compared to twill and sateen. HPP increased by approximately 24% with the PPI rising from 40 to 64. Air permeability and thermal conductivity decreased by roughly 50% and 38%, respectively, with increasing PPI. Sateen and twill showed similar trends. WVTR increased with PPI up to 52, then declined. Overall, higher PPI enhanced HPP for all weave structures, with the honeycomb structure showing the best performance. Thermal conductivity and air permeability decreased as PPI increased due to the greater compactness in these three fabrics.

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评价不同编织结构的极热防护服外层的性能。

本研究考察了编织模式、每英寸拣纱量（PPI）和关键性能指标的相互作用，包括热防护性能（HPP）、透气性、热阻和水蒸气透过率（WVTR）。采用Nomex-IIIA纱线对三种织物结构（斜纹、缎纹和蜂窝）进行了测试。火焰和辐射热相结合，热流密度为80±2 kW/m2。与斜纹和缎相比，蜂窝织物表现出优越的热保护。随着PPI从40上升到64，HPP增加了约24%。随着PPI的增加，透气性和导热系数分别下降了约50%和38%。棉缎和斜纹也有类似的趋势。WVTR随PPI上升至52后下降。总体而言，较高的PPI增强了所有编织结构的HPP，其中蜂窝结构表现出最好的性能。热传导率和透气性随着PPI的增加而下降，这是由于这三种织物的致密性更大。

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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