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首页> 外文期刊>Fibres & textiles in Eastern Europe >Alternate Basic I/b-model of Effective Porosity Created for Hydrophilic (I) andlor Hydrophobic (b) Moist Textile Materials
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Alternate Basic I/b-model of Effective Porosity Created for Hydrophilic (I) andlor Hydrophobic (b) Moist Textile Materials

机译：为亲水性（I）和/或疏水性（b）湿润纺织材料创建的有效孔隙率的基本I / b模型

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摘要

There are several standard test methods (based on different construction mechanisms) and the respective experimental conditions (relative humidimy, air velocity, test temperature) which lead to essentially different estimates of water vapour permeability as well as the effective transport coefficients for the same textile materials. To develop objective comparative methodology within a set of similar materials, one needs either to eliminate completely the effect of both factors above or to take into consideration their combined influence on the textile transport characteristics in a self-consistent manner. The latter a more promising strategy of comparison, requires, first of all, a correct definition ofproperties related just to the textile materials, but not to the specific test-methods or to their experimental conditions and peculiarities. This work is an attempt to create a physically-plausible alternate model of hydrophilic (1) and/or hydrophobic (b) textile materials by the special concept of effective porosity dependent on the moisture content and, as a result, on the bulk density offabric. We consider the permeability in the generalized Darcy's-Fick's law as the function of effective porosity, which controls all main transport coefficients of textile material. Any adjustable coefficients are absent in the alternate basic 1/b-model proposed.
机译：有几种标准测试方法（基于不同的构造机理）和相应的实验条件（相对湿度，空气速度，测试温度），导致对相同纺织材料的水蒸气透过率以及有效传输系数的估计大不相同。 。为了在一组相似的材料中开发客观的比较方法，需要要么完全消除上述两个因素的影响，要么以自洽的方式考虑它们对纺织品运输特性的综合影响。后者是一种比较有希望的比较策略，首先需要正确定义仅与纺织材料相关的属性，而不与特定的测试方法或其实验条件和特性有关。这项工作是通过有效孔隙率的特殊概念（取决于水分含量，进而取决于织物的堆积密度）来创建亲水性（1）和/或疏水性（b）纺织材料在物理上可行的替代模型的尝试。 。我们认为广义达西-菲克定律中的渗透率是有效孔隙率的函数，有效孔隙率控制着纺织材料的所有主要传输系数。建议的替代基本1 / b模型中不存在任何可调系数。

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