【摘要】 使用一种低温下织物热湿传递试验装置,在-20℃和20℃模拟环境温度下,测试了防水透湿织物两侧的温度与湿度的分布和透过织物的水气量,比较织物在低温下和常温下的湿传递特性。结果显示:水浴的水气蒸发量(模拟人体出汗)、织物表面水凝结量和透过织物的水气蒸发量随时间的变化均呈近似线性增长,说明了织物湿阻与表面水凝结是无关的。在低温环境下(-20℃),水浴的水气蒸发率(模拟人体出汗)、织物水凝结率和透过织物的水气蒸发率大,织物湿阻小,表明了织物表面湿阻与环境湿度是相关的。更多还原

【Abstract】 In this paper, a novel apparatus is repord on, which is used to measure the moisture transport through fabrics under a conventional and subzero climatic condition. Experimental results show that, under both conventional (20℃) and subzero (-20℃) climate, the accumulation of condensates on fabric surfaces increases almost linearly with time and the rate of moisture transfer through fabrics is little affected by the accumulation of condensates on fabric surfaces. Nevertheless, the water evaporation from the water bath, condensation on fabric surface and vapor transmission through the fabric is greater and the moisture vapor resistance smaller under the subzero (-20℃) climate than those under the conventional (20℃) climate.更多还原