Basic Research on the Characteristics of Cloths to Keep Warmth and Moisture Permeability

服装保暖透湿特性的基础研究

• 批准号: 03650174
• 负责人: SAITO Akio
• 金额: $ 1.28万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650174/
• 关键词: Thermophysical Properties; Textile Fabrics; Keeping Warmth

Experiments and analyses were done concerning the measurement of thermophysical properties of a textile fabrics, which were necessary for the basic discussions of the characteristics of cloths, such as keeping warmth and moisture permeability. Concerning a textile fabrics, the real thermal conductivity in a vacuum, the permeability, the porosity and the apparent thickness were measured precisely. On the bases of the above properties, the physical meaning of the thermal transmittance of the textile fabrics determined by the ASTM standard were discussed. Then, the possibility and the directions to improve the ASTM standard were suggested.The following results were obtained in the financial year 1991.1. On the bases of the transient flat-plate measuring method by O. Krischer, the apparatus to measure simultaneously the thermal penetration factor, the specific heat and the thermal conductivity of a textile fabrics both in a vacuum and in an air was constructed. And the measurements were done using the standard textile sample made of polyester.2. An apparatus to measure precisely the permeability of a textile sample was proposed and constructed under the measuring condition of low stable fluid velocity, where the Darcy's law can be applied. Measurements were done using the standard textile sample.3. An apparatus to measure the thermal transmittance was prepared on the instructions of the ASTM standard test method, and the measurements were done on the above textile sample. It was pointed out, as the problems of the test method, that the control of the guard heater to ensure the amount of heat supplied to the sample was impossibly difficult and that the modification of the natural convection effects over the textile sample was not adequate.In the financial year 1992, the results obtained through the former year were discussed precisely and the contents were filled up.

关于测量纺织织物的热物理特性的实验和分析是对布料特征的基本讨论所必需的，例如保持温暖和水分渗透性。关于纺织织物，真空中的实际热导率，渗透率，孔隙率和明显的厚度被精确测量。在上述属性的基础上，讨论了由ASTM标准确定的纺织织物的热透射率的物理含义。然后，提出了提高ASTM标准的可能性和指示。在1991.1财政年度获得以下结果。在O. Krischer的瞬态平板测量方法的基础上，该设备同时测量了热渗透因子，在真空中和空气中构建了纺织织物的特定热和热导率。并使用聚酯制成的标准纺织品样品进行测量。2。提出并在低稳定的流体速度的测量条件下提出并构建了一种精确测量纺织品样品渗透性的设备，并在其中应用达西定律。使用标准纺织品样品进行测量3。根据ASTM标准测试方法的说明制备了测量热透射率的设备，并在上述纺织品样品上进行了测量。有人指出，作为测试方法的问题，防护加热器以确保提供给样品的热量的量非常困难，并且对纺织品样本的自然对流效应的修改不足。在1992年财政年度，精确地讨论了通过前一年获得的结果，并填充了内容。

项目成果

A. Saito, S. Okawa and C. Liou: "Measurement of Air Permeability of Textile Material" 30th National Heat Transfer Symposium of Japan. (1993)

A. Saito、S. Okawa 和 C. Liou：“纺织材料透气率的测量”第 30 届日本全国传热研讨会。

斎藤 彬夫: "布の透過率・測定法に関する研究" 第30回日本伝熱シンポジウム講演論文集. (1993)

Akio Saito：《织物透过率及其测量方法的研究》第 30 届日本传热研讨会论文集（1993 年）。

斎藤 彬夫: "布の透過率測定法に関する研究" 第30回日本伝熱シンポジウム講演論文集. (1993)

Akio Saito：“织物透射率测量方法的研究”第30届日本传热研讨会论文集（1993）。