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Title: Moisture and thermal transport properties of different polyester warp-knitted spacer fabric for protective application
Authors: Chen, Q
Shou, D 
Zheng, R
Tang, KPM
Fu, B
Zhang, X
Ma, P
Issue Date: 2020
Source: Autex research journal, 2020
Autex research journal, 2020, v. 21, no. 2, p. 182-191
Abstract: Warp-knitted spacer fabrics are generally used for sportswear, functional clothing, protective clothing, and other applications. This article studied the heat and mass transfer properties of polyester warp-knitted spacer fabrics from low thickness (2 mm) to high thickness (20 mm), from low mass (247.34 g/m2) to high mass (1,585.9 g/m2), and surface structure in plain or mesh construction. Water vapor permeability, air permeability, water absorption, and thermal insulation property were conducted to evaluate the spacer fabrics. The results revealed that with increasing volume density the water vapor permeability of spacer fabrics decreased, but the water absorption ratio increased. The water vapor permeability of fabrics increased when thickness decreased and volume density increased. It was further found that spacer fabrics with mesh worn nearby the skin and plain structure worn far from the skin could facilitate water vapor and air transmission. The difference of 8.82% for water vapor permeability and 14.19% for air permeability were found between testing mesh side up and down for the spacers (2.56 and 3.37 mm), respectively. Thermal insulation ratio was highly and significantly correlated with heat transfer coefficient at -0.958 and with thickness at 0.917. Thermal insulation ratio is highly and significantly correlated with air permeability at 0.941.
Keywords: Air permeability
Thermal insulation
Warp-knitted spacer fabrics
Water absorption
Water vapor permeability
Publisher: Politechnika Lodzka, Wydzial Technologii Materialowych i Wzornictwa Tekstyliow
Journal: Autex research journal 
ISSN: 1470-9589
DOI: 10.2478/aut-2020-0013
Rights: © 2021 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The following publication Chen, Qing, Shou, Dahua, Zheng, Rong, Tang, Ka-Po Maggie, Fu, Bailu, Zhang, Xiaoting and Ma, Pibo. "Moisture and Thermal Transport Properties of Different Polyester Warp-Knitted Spacer Fabric for Protective Application" Autex Research Journal, vol.21, no.2, 2021, pp.182-191, is available at https://doi.org/10.2478/aut-2020-0013
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