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Radiative Cooling and Protective Clothing Through Lamination of Hierarchically Porous Membrane
Advanced Materials Technologies ( IF 6.8 ) Pub Date : 2024-03-27 , DOI: 10.1002/admt.202301808
Bin Liu 1, 2 , Renyan Zhang 1, 3 , Yingjie Wu 1, 4 , Yingeng Wang 5 , Tao Yu 5 , Xiong Li 1, 2 , Mingbo Pu 1, 2 , Xiaoliang Ma 1, 2 , Xiangang Luo 1, 2
Affiliation  

Personal protective clothing is designed to safeguard medical personnel from highly infectious diseases. However, it often compromises comfort, especially when worn outdoors during epidemics like the global COVID‐19 outbreak. This can lead to discomfort and even heatstroke. To tackle this issue, radiative cooling is incorporated into personal protective clothing by integrating hierarchically porous poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) membranes into the fabric. These membranes possess a remarkable solar reflection rate of 96.9% and a strong mid‐infrared emittance of 95.2%. In practical scenarios, when exposed to clear sunny weather at midday, wearing radiative cooling personal protective clothing has the potential to reduce the temperature by 4.7 °C compared to commercially available personal protective clothing. Moreover, the lamination of porous PVDF‐HFP membranes enhances the protective capacity by increasing the synthetic blood penetration pressure from 7 to 20 kPa. The manufacturing process is straightforward, cost‐effective, and aligns with industry standards, making it suitable for large‐scale implementation in epidemic prevention and control. This technology offers comfortable protection while minimizing the risk of heatstroke.

中文翻译:

分层多孔膜层压的辐射冷却和防护服

个人防护服旨在保护医务人员免受高传染性疾病的侵害。然而,它常常会损害舒适度,尤其是在全球 COVID-19 爆发等流行病期间在户外佩戴时。这可能会导致不适甚至中暑。为了解决这个问题,通过将分层多孔聚(偏二氟乙烯-六氟丙烯)(PVDF-HFP)膜集成到织物中,将辐射冷却纳入个人防护服中。这些膜具有高达 96.9% 的太阳反射率和 95.2% 的强中红外发射率。在实际场景中,当中午暴露在晴朗的晴朗天气时,与市售个人防护服相比,穿着辐射冷却个人防护服有可能降低4.7℃的温度。此外,多孔PVDF-HFP膜的层压通过将合成血液渗透压从7kPa增加到20kPa来增强保护能力。制造工艺简单、成本低、符合行业标准,适合在疫情防控中大规模实施。该技术提供舒适的保护,同时最大限度地降低中暑风险。
更新日期:2024-03-27
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