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首页> 外文会议>Second International Conference on Safety amp; Protective Fabrics, Apr 26-28, 2000, Arlington, VA >THE USE OF WATER-RETAINING POLYMER STRANDS IN PROTECTIVE CLOTHING COMPOSITES FOR ENHANCED WEARING COMFORT AND THERMAL PROTECTION
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THE USE OF WATER-RETAINING POLYMER STRANDS IN PROTECTIVE CLOTHING COMPOSITES FOR ENHANCED WEARING COMFORT AND THERMAL PROTECTION

机译：在保护性服装复合材料中使用保水聚合物链条，以提高穿着舒适感和热防护性能

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摘要

In hot environments, protective clothing can become wet from wearer perspiration inside the garment and possibly from exterior water sources. The role of wet clothing in affecting wearer comfort and thermal protection is not well characterized. Under some circumstances, water-laden clothing assists in evaporative cooling and adds extra heat absorbing capacity in high heat conditions. Under different circumstances, wet clothing can become heavy, impede moisture transfer, and more easily conduct heat from the outside environment. This paper describes special radiant testing of a composite fabric technology that has been designed to incorporate water-retaining polymer strands into a fibrous batting. This polymer evenly suspends water throughout the material construction in a manner that provides for evenly distributed cooling performance and heat absorption. The batting is combined with an exterior woven fabric shell and a conductive, microporous based lining that helps transfer heat away from the body and permit water vapor transfer. Early testing also indicated improvements in thermal insulation for high heat environments. In order to attain the enhanced performance, the material must be prewetted before wearing. Since the addition of water to material systems is known to have varying effects on heat transfer and protection offered by clothing, the study described in this paper was undertaken to investigate the role of moisture in the clothing in providing thermal protection. The study compared the performance of one clothing material composite incorporating the water-retaining polymer strands against a standard composite using conventional material technology. On the basis of radiant testing with the measurement of calorimeter temperature rise, thermocouple temperature response and moisture transfer (by weight gain), improved thermal insulation was found for the new material technology when wetted (to provide activation of its principally intended cooling capacity). In contrast, the standard composite showed lower thermal insulation performance at various levels of moisture compared to testing when dry. This study helps to demonstrate the benefits for the combination of increased thermal protection with improved thermal comfort. This combination affords possible improvements in worker protection and productivity. As such the technical can overcome the limitation of many current material technologies where there is usually a significant tradeoff between wearer comfort and protection.
机译：在炎热的环境中，防护服会因穿着者内部的汗水（可能是外部水源）而变湿。湿衣服在影响穿着者舒适性和热保护方面的作用尚不十分清楚。在某些情况下，盛水的衣服有助于蒸发冷却，并在高温条件下增加额外的吸热能力。在不同的情况下，湿衣服可能会变重，阻碍水分传递，并且更容易传导外部环境的热量。本文介绍了一种复合面料技术的特殊辐射测试，该技术旨在将保水聚合物股线掺入纤维棉絮中。该聚合物以提供均匀分布的冷却性能和吸热的方式将水均匀地悬浮在整个材料结构中。棉絮与外部机织织物外壳和基于微孔的导电衬里相结合，可帮助将热量从身体传递出去并允许水蒸气传递。早期测试还表明，在高温环境下，隔热性能得到了改善。为了获得增强的性能，必须在穿着之前对材料进行预润湿。由于已知在材料系统中加水会对衣物的传热和防护产生不同的影响，因此本文进行的研究旨在研究衣物中水分在提供热防护方面的作用。这项研究比较了使用常规材料技术将掺入保水聚合物股线的一种服装材料复合材料与标准复合材料的性能。在测量热量计温度升高，热电偶温度响应和水分传递（按重量增加）的辐射测试的基础上，发现新材料技术在润湿时具有更好的隔热性（以激活其主要预期的冷却能力）。相反，与干燥时的测试相比，标准复合材料在各种湿度下显示出较低的隔热性能。这项研究有助于证明增加热保护和改善热舒适性相结合的好处。这种结合可以提高工人的保护水平和生产率。这样，该技术可以克服许多当前材料技术的局限性，在这些技术中，通常在穿着者的舒适性和保护之间存在重大折衷。

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