Development of a Device for Measuring Heat-Moisture Transfer Properties of Apparel Fabrics
Development of a Device for Measuring Heat-Moisture Transfer Properties of Apparel Fabrics
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服装面料热湿传递性能测量装置的研制
DOI：
10.4188/transjtmsj.37.8_t130
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
S. Kawabata
中科院分区：
文献类型：
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作者：
S. Kawabata
本文介绍了一种新型的服装织物传热性能测试装置，并给出了该装置的应用实例。该装置的基本功能如下：（1）检测织物的热吸收：在织物表面接触含有一定量热量的薄铜板后，这种吸收开始。与该吸收相关联的热流信号通过低通滤波器，然后定义为qmax的热流峰值出现在约0.2秒处。并记录以评价与织物触感的暖/凉感觉相关的织物性能。用这种瞬态法测量了织物的导热系数和热扩散系数。(2)用稳态法快速测定织物导热系数用薄铝热板作为平行板法的两块热板之一。通过高速响应精确控制板温。板温度在10秒内跟随。以2°C的步进命令。这种快速响应使得能够在不对织物状态造成任何干扰的情况下测量热导率，例如在测量期间织物回潮率变化。(3)通过各种模式进行隔热测量;连续测量并记录通过织物进入空气的热损失。该装置可在几分钟内完成织物的常规隔热性能测试，本文称之为“干法”。作为一种试验方法，提出了蒙皮法。该系统在热板上放置含有大量水分的纸张来模拟人体皮肤，并将织物样品放置在纸张上或织物与纸张之间留有适当的间隙，该系统的热损失测量提供了大量关于织物热湿传递行为的信息。例如，它清楚地表明，羊毛夏季西装比涤纶夏季西装凉爽得多，其中一些结果进行了详细描述。
A new device has been developed to measure the heat transfer properties of apparel fabrics and is reported in this paper with some examples of an application of this device. The basic functions of this device are as follows : (1) Detection of the heat absorption by a fabric ; This absorption starts just after the touching of a thin copper plate containing an amount of heat on the surface of fabric. The signal of the heat flow associated with this absorption passes a low pass filter, then the peak value of the heat flow which is defined as qmax appears at about 0.2 sec. after the touching and recorded to evaluate the fabric properties relating with warm/cool feeling of fabric touch. The thermal conductivity and diffusivity of fabric are also measured by this transient method.(2) Quick measurement of the fabric thermal conductivity by a steady method ; A thin aluminium heat plate is used as one of two plates of the parallel plates method. The plate temperature is controlled precisely with the high-speed response. The plate temperature follows within 10 sec. with a stepwise command of 2°C. This quick response enables the measurement of the thermal conductivity without making any disturbance on the state of fabric such as fabric moisture-regain change during measurement.(3) Thermal insulation measurement by various modes ; The heat loss through fabric into the air is measured and recorded continuously. The ordinary method of the fabric thermal-insulation testing, referred to “dry method”in this paper, is completed within a few minutes by this new device. As one of the testing variation, the skin method is presented. A paper containing a lot of water is placed on the heat plate to simulate human skin and a fabric sample is put on this paper or with a moderate space of gap between a fabric and the paper.The heat loss measurement of this system provides much information about heat-moisture transfer behavior of fabrics. For example, it is clearly shown that wool summer suitings are much cooler than polyester summer suitings.Some of these results are described in detail.