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《Journal of Donghua University,Natural Science》 1999-02
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Study on the Factors to Influence Dynamic Heat -moisture Comfort of Summer Clothing Fabrics

Jiang Peiqing (College of Textiles, China Textile University, Shanghai, 200051)Tang Shijun , Shen Yuhong (The Quartermaster Equipment Research Institute, Beijing, 100010)  
The factors to influence the dynamic heat - moisture comfort of summer clothing fabrics have been studied. It is pointed out that, when the wind speed outside is high, or the air permeability is very good, the sweat of human body will evaporate mainly through turbulent diffusion. Because of the rapid sweat evaporation, human body will feel cold, and then, the difference in temperature and humidity of the micro - climatic section will be very slight. On the contrary, when the wind speed outside is slow or the air permeability is unsatisfactory, the sweat of human body will evaporate mainly through molecular diffusion, and in this case, the humidity of the micro - climatic section will be depended on the hygro-scopicity of the fabric, that is to say, the better the hygroscopicity, the lower the humidity. For pure polyester fabric, it makes human body fell hot and suffocating because of the high humidity of the micro - climatic section when sweating begins , but cold because of the low temperature when sweating ends. Therefore, the fabrics is not suitable to being used for summer clothing fabric. It is difficult for pure wool fabric to loss heat because of its giving out much heat during the course of moisture - absorption in the initial stages of sweating. For the purpose of summer clothing, the pure cotton fabric, the polyester - cotton fabric, or the wool - polyester fabric should be taken into account as the first selection.
【CateGory Index】: TS101.923
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