微孔膜防水透湿织物热湿传递中织物表面凝结

Condensation of Water Vapor on Fabrics Surface

试制了一种织物微气候仪,模拟人体和服装之间的微气候,测量其中的温度和相对湿度,研究是否在织物里表面产生凝结,为进一步研究织物的热湿传递提供实验依据。测试装置由计算机控制,操作方便,实验时间短。本装置实验结果与ASTME96-00测试的透湿量相比较,对防水透湿织物的湿传递表征具有明显的优势。此外,本文从水蒸汽凝结和Kelvin公式,分析研究了微孔膜防水透湿织物热湿传递中发生表面凝结的现象。

A complete representation of the skin microclimatefabricenvironment includes the skin layer,fabric and outside environment.Between the skin and fabric is the 'clothing microclimate'.Condensation occurred in the fabric inner surface depends upon the model perspiration escaped from the human body transferring through the clothing wihch is determined by the properties of the fabrics.A new measuring apparatus,which conducts under computer control that is described in this paper can be used to investigate whether condensation occurs on the fabrics.The measuring apparatus can be used to examine,record and display temperature and relative humidity simultaneously and permits rapid testing of small quantities of fabrics in a short amount of time.It is logical to use the apparatus described in this paper rather than the ASTM 96E00 to investigate water vapor permeability of fabrics,especially condensation on the fabrics inner surface.Furthermore,condensation on the waterproof but breathable is explained via Kelvin equation.