纺织纤维在环境湿度变化过程中的放热效应——ISO:16533与动态热板试验方法的比较

IF 4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Fibers Pub Date : 2023-05-22 DOI:10.3390/fib11050047
Faisal Abedin, E. DenHartog
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引用次数: 1

摘要

高回潮率纤维类型的放热效应已经在前面描述过;然而,还没有可靠的测试来证明这些对人体的影响。大多数测试方法侧重于稳态测量;因此,在环境湿度变化期间的这些放热效应通常不被分析或量化。我们进行了一组织物测试,显示了水蒸气吸收的放热效应与其在瞬态条件下通过织物的热损失之间的联系。我们进行了ISO:16533标准测试,这是Naylor开发的一种动态热板测试,用于测量织物的放热性能,并进行了动态回潮测试,以连接这些测试与水蒸气吸收现象之间的点。尽管ISO:16533测试方法倾向于显示纤维的温度升高,但它无法区分吸湿纤维(羊毛、粘胶、棉花)类型(p>0.001)。此外,传感器尺寸和样品折叠技术可能会影响温度升高。另一方面,Naylor热板测试显示,不同纤维类型的热释放差异更大(羊毛的热释放比粘胶高20%,比棉花高50%),尽管室内的相对湿度变化需要时间,这可能无法反映湿度的逐步变化。到目前为止,这些测试方法已被证明是测定纺织纤维放热行为的最可靠方法。然而,考虑到环境的瞬时变化,这些测试方法仍然有局限性,无法模拟现实的环境条件。本文反映了两种测试方法之间的比较,并建议了在动态条件下准确解决水蒸气吸收理论的方向。
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The Exothermic Effects of Textile Fibers during Changes in Environmental Humidity: A Comparison between ISO:16533 and Dynamic Hot Plate Test Method
The exothermic effects of high regain fiber types have been described before; yet, there have not been reliable tests to demonstrate these effects on the human body. Most test methods focus on steady-state measurements; therefore, these exothermic effects during changes in environmental humidity are typically not analyzed or quantified. We have conducted a set of fabric tests that shows the connection between the exothermic effect of water vapor uptake and its consequence for heat loss through the fabric in transient conditions. We have performed the ISO:16533 standard test, a dynamic hot plate test developed by Naylor to measure the exothermic property of the fabric, and dynamic regain tests to connect the dots between these tests and the water vapor uptake phenomenon. Although the ISO:16533 test method tends to show the temperature increase in fibers, it cannot differentiate between the hygroscopic fiber (wool, viscose, cotton) types (p > 0.001). In addition, sensor size and sample folding techniques could impact the temperature increase. On the other hand, the Naylor hot plate test showed a greater difference in heat release among the fiber types (wool showed 20% higher heat release than viscose, 50% more than cotton), although the relative humidity changes in the chamber take time, which might not reflect a step-wise change in humidity. So far, these test methods have proven to be the most reliable for determining the exothermic behavior of textile fiber. However, these test methods still have limitations and cannot simulate realistic environmental conditions considering an instantaneous change in the environment. This paper reflects the comparison between the two test methods and recommends directions to accurately address the theory of water vapor uptake under dynamic conditions.
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来源期刊
Fibers
Fibers Engineering-Civil and Structural Engineering
CiteScore
7.00
自引率
7.70%
发文量
92
审稿时长
11 weeks
期刊介绍: Fibers (ISSN 2079-6439) is a peer-reviewed scientific journal that publishes original articles, critical reviews, research notes and short communications on the materials science and all other empirical and theoretical studies of fibers, providing a forum for integrating fiber research across many disciplines. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. The following topics are relevant and within the scope of this journal: -textile fibers -natural fibers and biological microfibrils -metallic fibers -optic fibers -carbon fibers -silicon carbide fibers -fiberglass -mineral fibers -cellulose fibers -polymer fibers -microfibers, nanofibers and nanotubes -new processing methods for fibers -chemistry of fiber materials -physical properties of fibers -exposure to and toxicology of fibers -biokinetics of fibers -the diversity of fiber origins
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