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Convection/diffusion test method for porous textiles

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)

International Journal of Clothing Science and Technology

ISSN: 0955-6222

Article publication date: 1 May 2000

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.

Keywords

Citation

Gibson, P., Rivin, D. and Kendrick, C. (2000), "Convection/diffusion test method for porous textiles", International Journal of Clothing Science and Technology, Vol. 12 No. 2, pp. 96-113. https://doi.org/10.1108/09556220010324803

Publisher

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MCB UP Ltd

Copyright © 2000, Authors