Breathability and dynamic evaporative cooling heat flow of a ripstop defence fabric

Benltoufa, Sofien (author), Algamdy, Hind (author)

This study investigated the breathability and dynamics of evaporative cooling heat flow through a defence fabric. Two ripstop fabrics were developed by changing the floats in the delimiting plain grid. The influence of fibre kinds was studied using weft threads made of 100% cotton, 65% polyester/35% cotton and 100% polyester. First, the breathability of used materials was evaluated using relative water vapour permeability (RWVP), resistance (Ret) and air permeability. Second, a more in-depth examination was conducted using evaporative cooling heat flow kinetics, and certain distinguishing variables that describe the various evaporative cooling heat flow phases were found. Those parameters consider the evaporative heat flow at 0 seconds, defining the skin’s first contact and the time spent to reach equilibrium. The results demonstrated that adding polyester to a fabric makes it more breathable, cooler, faster drying, and provides a more refreshing sensation on initial contact with the skin. Adding floats to the delimiting plain grid reduces the fabric's porosity and breathability.

• Language: English
• Keywords: ripstop, breathability, evaporative cooling heat flow, refreshing sensation
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: Str. 70-81
• Numbering: Vol. 68, no. 1
• PID: 20.500.12556/RUL-176818
• ISSN on article: 0351-3386
• DOI: 10.14502/tekstilec.68.2024115
• COBISS.SI-ID: 262199811
• Publication date in RUL: 11.12.2025

Record is a part of a journal

• Title: Tekstilec : glasilo slovenskih tekstilcev
• Shortened title: Tekstilec
• Publisher: Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Društvo inženirjev in tehnikov tekstilcev, Univerza v Ljubljani, Naravoslovnotehniška fakulteta, Oddelek za tekstilstvo, Založba Univerze v Ljubljani
• ISSN: 0351-3386
• COBISS.SI-ID: 763396

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Dihalnost in hladilni dinamični izparilni toplotni tok zaščitne tkanine ripstop

Abstract

V raziskavi sta bila proučevana dihalnost in dinamični izparilni toplotni tok zaščitne tkanine. Z vključitvijo različnih dolžin flotirajočih niti v ojačitveno mrežo osnovne tkanine v vezavi platno sta bili razviti dve tkanini ripstop. Vpliv različne vrste vlaken je bil proučevan z uporabo različnih niti v votku, ki so bile iz 100 % bombaža, 65 % poliestra/35 % bombaža in 100 % poliestra. Najprej je bila ocenjena dihalnost tkanin na podlagi relativne prepustnosti vodne pare, izparilnega toplotnega upora (Riz) in zračne prepustnosti. Sledila je podrobnejša analiza kinetike hladilnega izparilnega toplotnega toka, pri čemer so bile uvedene spremenljivke za opis ugotovljenih različnih faz izparilnega toplotnega toka. Parametri, ki se nanašajo na izparilni toplotni tok v času nič sekund, opredelijo prvi stik s kožo in čas, potreben za doseganje ravnotežja. Rezultati so pokazali, da dodajanje poliestra tkanini omogoči večjo zračnost in hladnejši otip, ki se hitreje suši in zagotavlja hladen občutek ob prvem stiku s kožo. Dodajanje flotirajočih niti v ojačitveno mrežno strukturo zmanjša poroznost in zračnost tkanine.

• Keywords: tkanina ripstop, zračnost, izparilni toplotni tok, hladni občutek

Projects

• Funder: Taif University, Deanship of Graduate Studies and Scientific Research