Wearable Polyethylene/Polyamide Composite Fabric for Passive Human Body Cooling
Wearable Polyethylene/Polyamide Composite Fabric for Passive Human Body Cooling
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用于人体被动冷却的可穿戴聚乙烯/聚酰胺复合面料
DOI：
10.1021/acsami.8b14140
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发表时间：
2018-12-05
影响因子：
9.5
通讯作者：
Li, Zhong-Ming
中科院分区：
文献类型：
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作者：
Song, Ying-Nan;Ma, Ru-Jun;Li, Zhong-Ming
个人冷却技术（pct）局部控制个人温度，而不是整个建筑物，因此节省能源。然而，大多数pct仍然消耗能量，重量大，限制了它们在人类中的应用。为了在炎热的夏季实现个人热舒适，不消耗能源，我们设计了一种双层结构织物，增加人体热辐射的消散，同时减少太阳能的吸收，具有很高的热舒适性。该织物由两层组成，一层是具有纳米孔（孔径100-1000 nm）的聚乙烯薄膜，另一层是由尼龙6纳米纤维（直径约100 nm）和珠子（直径约230 nm）制成的薄膜，这可以增加可见光反射率，但不影响红外波辐射。因此，所设计的织物具有较高的散热功率，比选用的传统纺织品棉、麻、麻分别高出14.13、17.93和17.93 W/m(2)，具有较好的散热性能。即使在较高的环境温度下，其冷却性能也优于以往的研究成果。同时，织物的透湿性和吸湿性测试结果表明，所设计织物的穿着舒适性达到了所选传统纺织品的水平。
Personal cooling technologies (PCTs) locally control the temperature of an individual instead of a whole building and are thus energy saving. However, most PCTs still consume energy and are heavy in weight, restricting their application among human beings. To achieve personal thermal comfort and no energy consumption on hot summer days, we designed a bilayer structure fabric with high thermal comfort by increasing the dissipation of human thermal radiation and reducing solar energy absorption simultaneously. The fabric consisted of two layers, including a polyethylene film with nanopores (100-1000 nm in pore size) and a film made of nylon 6 nanofibers (ca. 100 nm in diameter) with beads (ca. 230 nm in diameter), which could increase the visible light reflectance but not affect the infrared wave radiation. Therefore, the designed fabric showed a high heat dissipation power, which was 14.13, 17.93, and 17.93 W/m(2) higher than that of the selected traditional textiles of cotton, linen, and odile, respectively, suggesting good cooling capability. Its cooling performance was better than those reported by the previous research works even at a higher ambient temperature. Meanwhile, the moisture penetrability and hygroscopic property results indicated that the wearing comfort of the designed fabric reached the levels of the selected traditional textiles.