Thermal resistance models of selected fabrics in wet state and their experimental verification

Mangat, Muhammad Mushtaq; Hes, Luboš; Bajzík, Vladimír

doi:10.1177/0040517514545254

Cited by 27 publications

(34 citation statements)

References 10 publications

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“…This parameter indicates the heat conduction capability of the solid materials and is largely dependent on their structure. 37 Analyzing the results obtained, it was observed that there was an increase in the thermal conductivity in all the finished samples. Considering that the basic textile material was the same, before and after the treatment, the changes registered in this property can be directly attributed to the finishes performed.…”

Section: Thermal Conductivitymentioning

confidence: 95%

"Chemical Characterization and Thermal Comfort Properties of Cotton Finished With Phase Change Materials and Antimicrobial Agents"

Scacchetti¹,

Soares²

2019

Cellulose Chem. Technol.

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The expectations regarding the functional characteristics and performance of textile products have been steadily increasing. In this sense, multifunctional materials with thermoregulatory and antimicrobial properties were developed using different finishing strategies. For this purpose, through finishing processes, the application of microcapsules of phase change materials, mPCM, combined with different antimicrobial agents of natural origin, was carried out. Specifically, zeolites doped with silver, composites of chitosan with zeolites doped with silver, and TiO 2 , in different application combinations, were used. The resulting multifunctional cotton materials were characterized and their performance was evaluated in terms of thermal comfort, stationary properties and moisture management. The statistical analysis of the results has indicated that the thermal properties underwent changes related to the introduction of mPCM in the treated samples, but the antimicrobial finishing also had an effect on the results obtained. As expected, the finishes contributed to a decrease in the permeability of the samples studied, however, without compromising the breathability of the materials. It was concluded that the best combination of finishes was achieved with the application of mPCM combined with the chitosan film with silver doped zeolites.

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Section: Thermal Conductivitymentioning

confidence: 95%

"Chemical Characterization and Thermal Comfort Properties of Cotton Finished With Phase Change Materials and Antimicrobial Agents"

Scacchetti¹,

Soares²

2019

Cellulose Chem. Technol.

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“…Equation 13 confi rms that as fabric moisture increases, the thermal resistance of a fabric decreases, which causes an increase in the cooling fl ux conducted away from the skin. Th is explanation can be further simplifi ed: an increase in the moisture content of a fabric will likely be followed by an increase in the mass transfer area, at least to some extent.…”

Section: Water Vapour Permeability Of Wet Fabricsmentioning

confidence: 99%

“…Th is original mathematical model for the thermal resistance of single-layer woven wet fabric presented by Mangat et al [13] includes the thermal resistance of dry fi bre polymer segments:…”

Section: Semi-empirical Model Of the Thermal Resistance Of Fabrics Inmentioning

confidence: 99%

“…Th e described thermal resistance values can be connected in real fabric, either in a series or in parallel, or in any combination of those connections. Th e original idea developed by Mangat et al [13] depends on a comparison of all possible connections with real experimental results, the statistical evaluation of those results and the selection of the resistance connection with the best correlation. For single-layer woven fabrics, this thermal resistance model takes the following form:…”

Section: Semi-empirical Model Of the Thermal Resistance Of Fabrics Inmentioning

confidence: 99%

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Thermophysiological Properties of Dry and Wet Functional Sportswear Made of Synthetic Fibres

–Baczek¹,

Hes²

2017

TEK

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In recent times, knitted fabrics made from synthetic fi bres are being used increasingly for sportswear. This type of clothing should ensure thermal comfort in all weather conditions, regardless of the activity of the wearer. The most important thermal properties include thermal conductivity and resistance, as well as water vapour permeability. Sportswear often becomes wet (from sweat or due to a humid environment), which can have a signifi cant eff ect on thermal properties, while most testing methods only perform measurements in a dry state. This paper therefore presents our study of the thermal properties of diff erent types of knitted fabrics in both dry and wet states. The presented research proved that wet knitwear results in a signifi cant loss of thermal comfort. This phenomenon is exacerbated when the moisture content of a material increases, and depends on the structure and fi lling of tested materials.

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“…It has been shown that moisture accumulation within textile fabric strongly affects its thermal comfort sensation [40][41]. Various investigations indicated that the thermal insulation and water vapour permeability of textile fabrics were influenced by moisture content in the fabric [42][43][44][45][46][47][48][49]. Bearing this in mind, it seems reasonable to expect that moisture content in the fabric affects its liquid transfer properties.…”

Section: Introductionmentioning

confidence: 99%

Liquid transfer properties of textile fabrics as a function of moisture content

Novaković

Milanović

Grujić

et al. 2020

Hem Ind

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Liquid transport in textile fabrics determines thermal comfort during high physical activity of a person when liquid perspiration is produced and needs to be transferred away from the skin to keep the thermal balance. In this investigation, an attempt was made to get some indications of how the combination of the fabric composition, geometry and dimensional stability, and the moisture content influences liquid transfer properties of plain weft knitted fabrics. Therefore, the knitted fabrics made from pure hydrophilic (hemp fibres), pure hydrophobic (acrylic fibres) and a hydrophilic/hydrophobic (hemp/acrylic) fibre blend underwent a trial wear and care period. The Malden Mills water distribution test was performed for the knitted fabrics with different moisture contents (0-30 %) in order to evaluate the effect on liquid transfer properties. Water transfer ability and water holding capacity of the knitted fabrics were also determined after undergoing the wear trial test. The obtained results were analysed with respect to macro and micro scales of porosity of knitted fabrics. It has been shown that the geometric configuration of the complex porous network in knitted fabrics influenced their liquid transfer properties in the whole moisture content range regardless of the composition. Despite the reconfiguration of the pore system in the knits during the trial period, their liquid transfer properties were still dependent on the pore size and distribution.

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Thermal resistance models of selected fabrics in wet state and their experimental verification

Cited by 27 publications

References 10 publications

"Chemical Characterization and Thermal Comfort Properties of Cotton Finished With Phase Change Materials and Antimicrobial Agents"

"Chemical Characterization and Thermal Comfort Properties of Cotton Finished With Phase Change Materials and Antimicrobial Agents"

Thermophysiological Properties of Dry and Wet Functional Sportswear Made of Synthetic Fibres

Liquid transfer properties of textile fabrics as a function of moisture content

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