Thermal comfort properties of 3-Dimensional knitted spacer fabrics have been studied in order to replace the existing polyurethane foams in the car seat and back supports. The influence of different characteristics of spacer fabrics, like structure, areal density, thickness and density on thermo-physiological performance has been studied. The potential thermal behavior is identified with the support of the thermal conductivity and resistance evaluation. The air and water vapor permeability have been measured and analyzed in-order to study the breathable performance of spacer fabrics. Advance statistical evaluation and two-way analysis of variance is used to analyze the significance of various factors on required properties. The result shows that spacer fabric with a hexagonal net structure has more open structure on surface than lock knit fabrics, which results in highly permeable to air with good thermal conductivity. It is also observed that, the hexagonal net fabrics have the ability to pass more water vapor than the fabrics with lock knit structure on the surface. These findings are the important requirements for designing the car seats with required thermal comfort properties using 3D spacer fabrics.

中文翻译：

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汽车座椅用3D经编间隔织物的热生理特性

为了替代汽车座椅和靠背支撑中的现有聚氨酯泡沫，已对3维针织间隔织物的热舒适性进行了研究。研究了间隔织物的不同特性，如结构，面密度，厚度和密度对热生理性能的影响。在热导率和电阻评估的支持下识别潜在的热行为。已测量并分析了空气和水蒸气的渗透性，以研究间隔织物的透气性能。使用高级统计评估和方差的双向分析来分析各种因素对所需属性的重要性。结果表明，具有六边形网状结构的间隔织物在表面上比锁编织物具有更多的开放结构，这导致具有良好导热性的空气具有高渗透性。还观察到，六边形网状织物比表面具有锁织结构的织物具有更多的水蒸气通过能力。这些发现是使用3D间隔织物设计具有所需热舒适性的汽车座椅的重要要求。