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首页> 外文期刊>Journal of Applied Polymer Science >Permeability properties of a pressure induced compacted polymer liner in gas cylinder
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Permeability properties of a pressure induced compacted polymer liner in gas cylinder

机译：气缸中压力诱导的压实聚合物衬里的渗透性能

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摘要

The permeability properties of composite gas cylinders for breathing gas with polymer inner-liner are investigated. The cylinder wall can be described as a composite membrane consisting of two layers. The permeability properties of the cylinder are presented as permeability coefficient and permselectivity. Deviation from the expected gas components might lead to incidents and potentially harmful situations when breathing gas from a compressed gas cylinder. Hence, gas permeability and potential changes in gas composition, must be considered when choosing cylinder materials. Cases of decompression sickness initiated this study. Experimental data show that pressure and oxygen fraction in the gas cylinder drops and that the permeability coefficient varies depending on the inner pressure. Permeability coefficients of 0.62-0.90 Barrer for oxygen and 0.44-0.56 Barrer for nitrogen are measured. Cracks in the inner-liner have caused an accentuated drop in of oxygen fraction and pressure.
机译：研究了聚合物内衬复合气瓶的透气性能。圆筒壁可以描述为由两层组成的复合膜。圆筒的渗透性能表现为渗透系数和渗透选择性。当从压缩气瓶中吸入气体时，偏离预期气体成分可能会导致事故和潜在的有害情况。因此，在选择气瓶材料时，必须考虑气体渗透性和气体成分的潜在变化。减压病病例引发了这项研究。实验数据表明，气瓶内的压力和氧含量下降，渗透系数随内压的变化而变化。测得氧气的渗透系数为0.62-0.90巴，氮气的渗透系数为0.44-0.56巴。内衬上的裂纹导致氧气含量和压力的急剧下降。

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