非标准条件下夏季服装面料的透湿性能研究

A Study on Water Vapor Permeability of Summer Clothing Fabrics under Non-standard Conditions

当环境温度和人体活动水平提高时,人体的不感知蒸发量(非显汗量)增大,在标准条件下测得的织物透湿性不能充分解释服装穿着中的湿舒适性问题。本文选用7种常用的夏季面料,利用蒸发法,在透湿杯水温分别为30℃、35℃和40℃的条件下对面料的透湿性能进行测试,以模拟不同环境温度和人体活动水平下的不感知蒸发和服装穿着情况。结果表明:随着水温的提高,水分蒸发量("不感知蒸发量")增加,织物的透湿率也随之增加,但水汽透过织物的百分比逐渐减小,这将导致衣下微气候湿度增大,使服装湿舒适性降低;织物结构对透湿性有较大影响,稀疏轻薄的面料透湿性好。

With the rising of ambient temperature and human body activity levels, the amount of insensible evaporation increases. The wet comfort of clothing cannot be well explained by the water vapor permeability （WVP） of fabrics measured under standard conditions. In this paper, 7 common summer clothing fabrics have been selected and their water vapor permeability has been measured at the temperatures of 30℃, 35℃and 40℃ respectively by using evaporation method to simulate the insensible evaporation and wearing status at different ambient temperature and human body activity levels. The result shows that with the rising of water temperature, the amount of water evaporation--- ＂the amount of insensible evaporation＂ increases, so does the value of fabric WVP, while the percentage of water vapor transmitting through the fabrics decreases. This will cause the increase of humidity of the under clothing microclimate and lead to the decrease of clothing wet comfort. Fabric structure has great influence on water vapor permeability and the loose and thin fabrics have good water vapor permeability.