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http://dx.doi.org/10.12772/TSE.2018.55.247

Study on Properties of Bio Polyurethane-ePTFE Membrane Fabrics at -20 Degrees Celsius  

Seo, Dae-kyung (Korea Dyeing & Finishing Technology Institute (DYETEC))
Lee, Jang-hun (Korea Dyeing & Finishing Technology Institute (DYETEC))
Hong, Jae-guen (Korea Dyeing & Finishing Technology Institute (DYETEC))
Kweon, Oh-kyung (Department of R&D Center, BSG Co., Ltd.)
Kim, Hyo-jung (Department of R&D Center, BSG Co., Ltd.)
Publication Information
Textile Science and Engineering / v.55, no.4, 2018 , pp. 247-254 More about this Journal
Abstract
This paper intends to study the characteristics of hybrid film fabrics composed of a $5-20{\mu}m$ bio-polyurethane layer and an ePTFE layer in low-temperature conditions. Bio-polyurethane resin was coated on the ePTFE fabric using direct coating methods. The water pressure properties increased with increasing polyurethane layer thickness, while water vapor permeability decreased. In comparison with ePTFE laminated fabric, hybrid film laminated fabrics are effective in enhancing mechanical properties (tensile strength, tear strength) and heat retention. In addition, the decrease in overall properties with respect to the flex resistance under low temperature was offset by the coated bio-polyurethane layer.
Keywords
bio polyurethane; ePTFE membrane; stretchable; hydrostatic pressure; flex resistance under low temperature;
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