織物服裝濕傳遞性能不同測(cè)定方法的對(duì)比外文文獻(xiàn)翻譯-資料下載頁
2025-01-08 10:36本頁面
【正文】 in a graph. After fitting the data with a straight line by linear regression, the slope of the line is then the moisture vapour resistance of a single layer of the fabric sample. . Sweating fabric manikin (Walter) Sweating fabric manikin (Walter) is the first sweating fabric manikin developed by Fan and his coworkers. Figure 4 shows the manikin wearing a Tshirt during the test. The experiment was carried out in a climatic chamber at 177。 ℃ and 177。 2% RH with an air velocity of 177。 m s?1. Figure4 Sweating fabric manikin (Walter) The Tshirts made of the eight fabrics were all in the same size. During the tests, the pants were kept the same for all Tshirt samples. The total moisture vapour resistance was calculated using the following formula: ese asasset RH )HPA (PR = （ 4） where A is the surface area of the manikin, Pss is the saturated vapour pressure at the skin temperature, Psa is the saturated vapour pressure at the ambient temperature and Ha is the ambient relative humidity (%), and Res is the moisture vapour resistance of the fabric skin which was calibrated in advance (Res=, He is the evaporative heat loss. He was calculated from 12 the measurement of evaporative water loss, He = λQ, where λ is the heat of evaporation of water at the skin temperature (λ= at 34 ℃ ), Q is the rate of evaporative water loss per hour. 4. Conclusions In this study, four instruments were used to evaluate the water vapour transmission rate or moisture vapour resistance of air permeable functional Tshirt fabrics/garments. It can be concluded from this investigation that, for typical functional Tshirt fabrics, the test results from the four test methods, namely themoisture transmission test (ModelCS141),ASTM E96 cup method, novel sweating guarded hot plate and the sweating fabric manikin (Walter) correlate well. The results from each of these tests can be pared with those from another test using the correlation trend lines found in this study. Some deviations from the correlation trend lines can be explained by the effect of the different testing conditions on the different types of fabrics. Author： F Kar, J Fan and W Yu Nationality： Hong Kong (Institute of Textiles and Clothing, The Hong Kong Polytechnic University) Originate from： MEASUREMENT SCIENCE AND TECHNOLOGY. 18 (2022) 13
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