Zhang Yinjia, Natsuki Jun, Weng Chengwu, Trung Vuong Dinh, Wang Yiwen, Cui Lina, Natsuki Toshiaki
College of Textiles and Apparel, Quanzhou Normal University, Quanzhou 362000, China.
Interdisciplinary Graduate School of Science and Technology, Shinshu University, Ueda 386-8567, Nagano, Japan.
Polymers (Basel). 2025 May 21;17(10):1420. doi: 10.3390/polym17101420.
Outdoor structures, such as vehicles, buildings, and outdoor equipment, are prone to overheat due to prolonged exposure to solar irradiation, which could affect their service life or user experience. To address this urgent issue, we developed a climate-adaptive thermal management solution using zinc oxide (ZnO)/low-density polyethylene (LDPE) hybrid membranes. The cooling performance of the membrane was examined across different seasons, achieving maximum temperature reductions (∆T) of 12.55 °C in summer, 8.02 °C in autumn, and 2.90 °C in winter. Our results demonstrated that the material's cooling efficiency varied with seasonal solar irradiance, showing quicker responsiveness in summer and reduced in winter, effectively preventing overcooling. Moreover, the enclosed specific volume () was identified as another critical parameter affecting cooling performance. We established an empirical correlation between ∆T and to quantify passive cooling performance across different seasons. This standardized method for assessing the cooling effect enables comparison between different materials, which is essential for determining climate-adaptive thermal management. Notably, the ZnO/LDPE membranes exhibited stable and balanced performance year-round, highlighting their potential for substantial energy savings in outdoor applications. This research provided valuable insights for designing climate-adaptive passive cooling materials that optimize thermal management across seasonal variations while contributing to sustainable energy conservation.
诸如车辆、建筑物和户外设备等户外结构，由于长时间暴露在太阳辐射下容易过热，这可能会影响它们的使用寿命或用户体验。为了解决这一紧迫问题，我们开发了一种使用氧化锌（ZnO）/低密度聚乙烯（LDPE）混合膜的气候适应性热管理解决方案。在不同季节对该膜的冷却性能进行了测试，夏季实现了最大降温幅度（∆T）为12.55℃，秋季为8.02℃，冬季为2.90℃。我们的结果表明，该材料的冷却效率随季节太阳辐照度而变化，在夏季响应更快，在冬季降低，有效防止了过度冷却。此外，封闭比容（）被确定为影响冷却性能的另一个关键参数。我们建立了∆T与之间的经验相关性，以量化不同季节的被动冷却性能。这种评估冷却效果的标准化方法能够对不同材料进行比较，这对于确定气候适应性热管理至关重要。值得注意的是，ZnO/LDPE膜全年表现出稳定且平衡的性能，凸显了它们在户外应用中实现大幅节能的潜力。这项研究为设计气候适应性被动冷却材料提供了有价值的见解，这些材料可在季节变化中优化热管理，同时有助于可持续节能。
