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Journal cover: International Journal of Clothing Science and Technology

International Journal of Clothing Science and Technology

ISSN: 0955-6222

Online from: 1989

Subject Area: Mechanical & Materials Engineering

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Convection/diffusion test method for porous textiles


Document Information:
Title:Convection/diffusion test method for porous textiles
Author(s):Phillip Gibson, (US Army Natick Research, Development and Engineering Center, Massachusetts, USA), Donald Rivin, (US Army Natick Research, Development and Engineering Center, Massachusetts, USA), Cyrus Kendrick, (US Army Natick Research, Development and Engineering Center, Massachusetts, USA)
Citation:Phillip Gibson, Donald Rivin, Cyrus Kendrick, (2000) "Convection/diffusion test method for porous textiles", International Journal of Clothing Science and Technology, Vol. 12 Iss: 2, pp.96 - 113
Keywords:Convection, Gas, Porous materials, Textiles
Article type:Technical paper
DOI:10.1108/09556220010324803 (Permanent URL)
Publisher:MCB UP Ltd
Abstract:Reports on an automated apparatus and test procedure to determine the convective and diffusive gas and vapor transport properties of small pieces of woven and nonwoven fabrics, membranes, and foams. The apparatus allows measurement of these properties in the very small quantities typical of material development programs, where the largest sample available may only be 1-10cm2 in area. The convection/diffusion test method is useful for determining the gas flow resistance property and water vapor diffusion properties from a single experimental run. This eliminates the need for two separate tests, which is the usual procedure. The apparatus may also be used to perform separate tests for the diffusion property or the air permeability property, which may have some advantages when materials exhibit strongly concentration-dependent transport properties. The convection/diffusion test method is well-suited for rapid screening and comparison of the properties of a large number of materials with widely-varying transport properties.



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