Physiological Effects of a Modification of the Construction of Impermeable Protective Clothing

Marszałek, Anna; Bartkowiak, Grażyna; Łężak, Krzysztof

doi:10.1080/10803548.2009.11076789

Cited by 19 publications

(4 citation statements)

References 14 publications

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“…In this study, we investigated the advantage of incorporating super-absorbent materials (super-absorbent fiber -SAF) into the structure of the inner layer that has high-performance fibers in the matrix. [9][10][11] The idea was to maintain a certain degree of thermal resistance while still improving physiological comfort. The newly developed fabric absorbed sweat and so kept it away from the skin even under the pressure of the outer garment layers.…”

mentioning

confidence: 99%

The impact of super-absorbent materials on the thermo-physiological properties of textiles

Houshyar

Padhye

Vijayan

et al. 2014

Textile Research Journal

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The use of appropriate protective clothing systems in high-risk environments is absolutely essential. Such protective clothing may not provide the desired wearer comfort due to the complexities associated with the system. These constraints are largely due to the multiple layers involved in the protective ensemble. Firefighters’ protective clothing systems, in particular, have limited or no water vapor permeability. This prevents evaporative heat loss and leads to thermal strain and sweat accumulation. This accumulated sweat on the skin and on the internal layer close to the body causes considerable discomfort to the user due to the sensation of wetness. Extensive research has been done to improve the comfort properties of such protective clothing. This research adds yet another dimension where a new inner-layer construction has been developed with high liquid and vapor-absorption capacity that could assist in keeping the moisture and vapor away from the skin and, in addition, retain a dry microclimate close to the skin. The developed materials were tested for their biophysical properties that included tests such as thermal and water vapor resistance, air permeability and moisture management properties. Experimental results in this study indicated that super-absorbent materials, when incorporated into a woven textile material, showed enhanced wearer comfort. It was observed that these super-absorbent materials have the capability to quickly wick the moisture away from the body and, in doing so, have the tendency to keep the skin dry.

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mentioning

confidence: 99%

The impact of super-absorbent materials on the thermo-physiological properties of textiles

Houshyar

Padhye

Vijayan

et al. 2014

Textile Research Journal

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“…They found that the participants walked on the treadmill for 30 min at a speed of 5.6 km/h and a slope of 4% under the environmental conditions of 23°C, 30% RH, and 1.2 m/s wind speed in an impermeable CPC, causing the core temperature to rise by 0.7°C. MARZALEK [47] also found that core temperature increased by 1.1°C after 30 min on a treadmill at a speed of 3 km/h with an air temperature of 40°C, 30% RH and wind speed of 0.2 m/s, for an impermeable CPC. In this study, comparing with Scenario C, the slope of Scenario D was higher and the intensity of activity was greater.…”

Section: Discussionmentioning

confidence: 88%

Heat strain in chemical protective clothing in hot-humid environment: Effects of clothing thermal properties

Zhang¹,

Chen

Liang³

et al. 2021

J. Cent. South Univ.

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Heat strain experienced by individuals wearing chemical protective clothing (CPC) is severe and dangerous especially in hot-humid environment. The development of material science and interdisciplinary studies including ergonomics, physiology and heat transfer is urgently required for the reduction of heat strain. The aim of this paper was to study the relationship among clothing thermal properties, physiological responses and environmental conditions. Three kinds of CPC were selected. Eight participants wore CPC and walked (4 km/h, two slopes with 5% and 10%) on a treadmill in an environment with (35±0.5) °C and RH of (60±5)%. Core temperature, mean skin temperature, heart rate, heat storage and tolerance time were recorded and analyzed. Physiological responses were significantly affected by the clothing thermal properties and activity intensity in hot-humid environment. The obtained results can help further development of heat strain model. New materials with lower evaporative resistance and less weight are necessary to release the heat strain in hot-humid environments.

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“…As for the intensity of effort, the differences between the test involving the use of S clothing and the test involving the use of B clothing were more minor than those at the lower air temperature (by approximately 10 W•m −2 ), indicating that physical effort under such temperature conditions exerts great load on the body, even when light clothing is used [22][23][24][25]. While in the tests involving the use of B clothing, the average intensity of physical effort was assigned to the third metabolic class, in the tests involving the use of S clothing it was assigned to the fourth metabolic class (very high metabolic rate, >260 W•m −2 ).…”

Section: Air Temperature Of 30°cmentioning

confidence: 99%

Physiological tests on firefighters whilst using protective clothing

Marszałek

Młynarczyk

2020

International Journal of Occupational Safety and Ergonomics

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In addition to the intense effort of firefighters during rescue operations and an adverse thermal environment, the properties of clothing can also hinder the performance of occupational activities. The heat load of firefighters during diversified effort in a climate chamber was compared for two types of protective clothing (barrack [B] clothing and barrack under specialpurpose [S] clothing) at two levels of air temperature (20 and 30°C). During testing, physiological parameters of heat strain were measured and subjective ratings were collected. There was a small increase in physiological parameters and subjective ratings at 20°C in S clothing compared to the results in B clothing, whereas those differences were substantial at 30°C. So, the structure of S clothing, which ensures protection of firefighters against high temperatures and flames, and its watertight layer make it significantly more difficult for the body to give off heat.

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Physiological Effects of a Modification of the Construction of Impermeable Protective Clothing

Cited by 19 publications

References 14 publications

The impact of super-absorbent materials on the thermo-physiological properties of textiles

The impact of super-absorbent materials on the thermo-physiological properties of textiles

Heat strain in chemical protective clothing in hot-humid environment: Effects of clothing thermal properties

Physiological tests on firefighters whilst using protective clothing

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