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Condensation of Water Vapor on Waterproof Breathable Fabrics
引用本文:周小红,王善元,袁观洛. Condensation of Water Vapor on Waterproof Breathable Fabrics[J]. 东华大学学报(英文版), 2003, 20(2)
作者姓名:周小红  王善元  袁观洛
作者单位:Textiles Institute,Donghua University,Shanghai 200051,Textiles Institute,Donghua University,Shanghai 200051,Zhejiang Technology and Science Institute,Hangzhou 310014
摘    要:Condensation occurs when the local vapor pressure rises above the saturation vapor pressure at the local temperature in theory. A new measuring apparatus were made to obtain temperature and relative humidity simultaneously for the purpose of investigating the mechanism of condensation occurred on the fabrics. The experiment conducted at the standard condition of temperature of 20℃ and relative humidity of 65%. The result obtained from experiment showed that condensation could occur under the situation closed to saturation line as the temperature on fabric may be lower than dew point of water vapor in the measuring box depending on the experiment conducted at an ambient environment temperature of 20℃ The range of fabrics studied showed that PTFE laminated fabrics except nylon gingham PTFE laminated fabric facilitates the loss of water vapor and therefore prevent condensation. It is necessary to develop studies from a wide range of fabrics, especially breathable fabrics and under bad experiment conditio


Condensation of Water Vapor on Waterproof Breathable Fabrics
ZHOU Xiao-hong WANG Shan-yuan Textiles Institute,Donghua University,Shanghai YUAN Guan-luo Zhejiang Technology and Science Institute,Hangzhou. Condensation of Water Vapor on Waterproof Breathable Fabrics[J]. Journal of Donghua University, 2003, 20(2)
Authors:ZHOU Xiao-hong WANG Shan-yuan Textiles Institute  Donghua University  Shanghai YUAN Guan-luo Zhejiang Technology  Science Institute  Hangzhou
Affiliation:1. Textiles Institute,Donghta University,Shanghai 200051
2. Zhejiang Technology and Science Institute, Haagzhou 310014
Abstract:Condensation occurs when the local vapor pressure rises above the saturation vapor pressure at the local temperature in theory. A new measuring apparatus were made to obtain temperature and relative humidity simultaneously for the purpose of investigating the mechanism of condensation occurred on the fabrics. The experiment conducted at the standard condition of temperature of 20°C and relative humidity of 65%. The result obtained from experiment showed that condensation could occur under the situation closed to saturation line as the temperature on fabric may be lower than dew point of water vapor in the measuring box depending on the experiment conducted at an ambient environment temperature of 20℃. The range of fabrics studied showed that PTFE laminated fabrics except nylon gingham PTFE laminated fabric facilitates the loss of water vapor and therefore prevent condensation. It is necessary to develop studies from a wide range of fabrics, especially breathable fabrics and under bad experiment condition in order to develop fabrics,which could eliminate condensation, or transport water vapor through the fabric while remaining waterproof.
Keywords:condensation   waterproof breathable fabrics   saturation
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