The breathable fabric and membrane application in protective clothing designed for protection against flame, radiation, hot liquid and steam are vital in thermal protective performance and thermal comfort. Four kinds of laminated membrane-fabrics were selected to investigate the influence of configuration and properties of the fabric on thermal protective performance under a pressurized steam hazard simulation. Surface morphology, water repellency, air permeability, water vapor permeability and other characteristics were evaluated to explore their impact on the mechanism of heat and moisture transfer in laminated fabric. It is found that the configuration critically affects the thermal protective performance. The thickness, mass and moisture regain of laminated fabric exhibit different levels of positive correlation with thermal protective performance of two configurations. Additionally, absorptive and porous membranes have different modes of water vapor transmission, while heat conduction and steam condensation in two kinds of membranes are both key influential factors in producing skin burn under steam hazard. Therefore, effective protection against steam hazard is achieved by decreasing the penetration and storage of steam within protective clothing.

中文翻译：

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层压膜织物的传输性能对蒸汽危害的热防护性能的影响

防护服中的透气织物和膜的应用旨在防止火焰，辐射，热液体和蒸汽，这对热防护性能和热舒适性至关重要。选择了四种层压膜织物，以研究在加压蒸汽危害模拟下织物的构型和性能对热防护性能的影响。评价了表面形态，防水性，透气性，水蒸气透过性等特性，以探讨它们对层压织物中的湿热传递机理的影响。发现该配置严重影响热防护性能。厚度 层压织物的质量和回潮率与两种配置的热防护性能表现出不同程度的正相关。另外，吸收性和多孔性膜具有不同的水蒸气传输模式，而两种膜中的热传导和蒸汽凝结都是在蒸汽危害下引起皮肤灼伤的关键影响因素。因此，通过减少防护服内蒸汽的渗透和存储，可以有效地防止蒸汽危害。