Thermal Absorptivity Model of Knitted Rib Fabric and its Experimental Verification

Mangat, Asif Elahi; Hes, Luboš; Bajzík, Vladimír; Mazari, Adnan

doi:10.1515/aut-2017-0003

Cited by 17 publications

(25 citation statements)

References 12 publications

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“…However, thermal contact feelings disappear within several seconds, and when these transient feelings are measured on thin fabrics, then even fabrics with a warm feeling practically cannot provide significant thermal insulation. 12 Contrary to thermal absorptivity, thermal resistance, R [m 2 K/W] is a commonly known steady state parameter of thermal insulation and it depends on fabric thickness h and its thermal conductivity λ [W/m/K], as follows:…”

Section: What Is the Difference Between Thermal Resistance And Thermal Absorptivity Of Fabrics?mentioning

confidence: 99%

Some open questions of evaluation of comfort properties of functional clothing

Hes¹

2020

JTEFT

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In the paper, several relatively new aspects of testing of functional clothing are discussed, such as the effect of moisture and testing time on water vapour permeability of fabrics as well as the effect of the testing time on thermal resistance value of fabrics tested in Skin Model type testers. Also the difference between thermal resistance and thermal absorptivity of fabrics was explained. It was concluded, that there are still some unsolved problems in the above areas, which should attract the attention of textile scientists and technologists.

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Section: What Is the Difference Between Thermal Resistance And Thermal Absorptivity Of Fabrics?mentioning

confidence: 99%

Some open questions of evaluation of comfort properties of functional clothing

Hes¹

2020

JTEFT

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“…Besides, thermal insulation properties are important factors in assessing the comfort of clothing for users. The Alambeta testing device (Sensora, Liberec, Czech Republic) was used to determine the thermal insulation properties of the basic and modified basalt fabrics [25,26] when they are the clothing components. The performed test relies on measuring the amount of heat penetrating the tested sample-the fabric, which is placed between the upper plate with a temperature of 35 • C (it should more or less correspond to the human skin temperature) and the lower plate reaching the ambient temperature.…”

Section: Comfort Thermal Propertiesmentioning

confidence: 99%

Study on Some Thermal and Electrical Properties of Basalt Fabric Modified with Metal and Ceramics as a Result of Magnetron Sputtering

et al. 2019

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The main aim of the research was to compare the values of some thermal and electrical parameters obtained for a basalt fabric modified with the metal and ceramics coatings. The surface modification of basalt fabric was made by using a magnetron sputtering technique. Chrome and zirconium(IV) oxide coatings were deposited on the fabric surface. The thermal and electrical properties of selected fabrics were determined. In order to assess the comfort properties of fabrics, the thermal resistance of materials was analyzed. Instrumental color measurement was used for an assessment of the surface of modified and unmodified basalt fabric. Using a non-contact digital color imaging system, DigiEye, an original method of samples surface analysis was presented. As a result of research, the modification of basalt fabric surface for applications in a hot work environment enabled the improvement of thermal properties in relation to the references samples. The first level of protection against contact heat for a contact temperature of 100 °C was obtained for the zirconium(IV) oxide-modified basalt fabric. The first level of protection against radiant heat was obtained for all samples. The highest value for the heat radiant resistance was obtained for the chrome-modified basalt fabric.

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“…Thermal absorptivity is the parameter that allows to draw conclusions about the sensation of heat/cold provided upon first contact with the materials. 7,40 Thus, high values of thermal absorptivity mean that the fabrics may suggest a fresh touch feeling. Nevertheless, this property is also related to the structure and composition of the fabric.…”

Section: Thermal Absorptivitymentioning

confidence: 99%

“…The increase in the contact area, in turn, allows a greater amount of heat to pass through the fabric, producing, consequently, a greater sensation of freshness when the contact with its surface occurs. 40 Therefore, the regularity of the surface of the functionalized material will influence its thermal properties. The finished samples, when compared with the untreated cotton samples, presented higher conductivity and absorptivity and lower thermal resistance, modifying their properties.…”

Section: Thermal Absorptivitymentioning

confidence: 99%

"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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Thermal Absorptivity Model of Knitted Rib Fabric and its Experimental Verification

Cited by 17 publications

References 12 publications

Some open questions of evaluation of comfort properties of functional clothing

Some open questions of evaluation of comfort properties of functional clothing

Study on Some Thermal and Electrical Properties of Basalt Fabric Modified with Metal and Ceramics as a Result of Magnetron Sputtering

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

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