摘要被动式辐射制冷/保暖技术可以有效减少能源消耗,在个人热管理中具有极大的应用潜力。采用层压法设计制备了一种三明治结构的非对称发射极的PTFE-PVDF/SiO2。导电织物,仅需调整其正反面即可实现制冷和保暖的双重功能,并分析了双功能纺织品的形貌结构、光学性能、日间辐射制冷/保暖性能和热稳定性能。实验结果表明，当SiO2。质量分数为30%时,复合织物日间辐射制冷效果最佳,比模拟皮肤温度低3.3~8.9℃;当SiO2。质量分数为20%时,复合织物日间辐射保暖效果最佳,比模拟皮肤温度高5.7~15.2℃。此外,随着SiO2。含量的升高,复合织物的热稳定性能基本不变。
Abstract Passive radiative cooling/heating technology can effectively reduce energy consumption and maintainecological balance, and has great potential for application in personal thermal management.A sandwich structure ofPTFE-PVDF/SiO2。conductive fabric with asymmetric emitter was designed and fabricated by lamination, which couldachieve the dual function of cooling and heating by simply adjusting its front and the back side.The morphologicalstructure optical properties,daytime radiative cooling/heating properties and thermal stability properties were analyzed.The results showed that when the SiO2。mass fraction was 30% , the composite fabric had the best daytime radiativcooling effect , which was 3.3~8.9℃ lower than the simulated skin temperature;The composite fabric had the bestdaytime radiative heating effect when the SiOmass fraction was 20%, which was 5.7~ 15.2℃ higher than thcsimulated skin temperature. In addition, as the SiO2。content increased, the thermal stability of the composite fabricremained basically unchanged.
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基金资助
2020国家重点研发计划固废资源化专项(2020YFC1910305)
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