仿人体出汗比例的Walter暖体假人皮肤制备

Preparation of skin of thermal manikin Walter with human sweating ratio

为了使Walter暖体假人各个部位具有与真人类似的相对出汗强度,采用了硅胶涂层的方法制备了非均匀出汗皮肤。通过对不同组分和不同厚度的硅胶涂层透湿率的分析,确定了最佳涂层工艺,以此工艺制备了3种具有自相似结构的硅胶涂层,通过对3种涂层的分形维数的计算和热阻,湿阻的测量,选择出最佳涂层结构。使用此涂层结构制备了整套非均匀出汗皮肤。实验测量了使用非均匀出汗皮肤和均匀出汗皮肤的暖体假人的裸态与着装状态的热阻和湿阻。结果显示:分形维数最接近黄金分割数的涂层方法可使非均匀出汗皮肤具有最佳热湿性能;所制备的非均匀出汗皮肤与原始均匀出汗皮肤对比,假人裸态和着装状态下的热阻、湿阻测量结果均有增加。

In order to make thermal manikin Walter perspiration have the same rate as human body＇s,a non-uniform skin with self-similarity structure was prepared by silicone coating.According to the water vapor permeability of different components and thickness of silicone coatings the optimal coating technology was determined.Fractal dimensions of three self-similarity structure coatings were calculated.The optimal coating structure was determined by analysis of the fractal dimension,thermal insulation and evaporative resistance.The non-uniform skin was made by this optimal coating structure.The evaporative resistance and thermal insulation were measured in the nude mode and clothing mode by using two kinds of skin.The results show that optimal thermal-wet comfort properties are obtained when the coating method has a fractal dimension close to the Golden Mean.The results indicate that the thermal insulation and the evaporative resistance measured by the non-uniform skin are higher than those measured by the uniform skin.