Hu Xin, Zhang Yingbo, Cai Wei, Ming Yang, Yu Rujun, Chen Daming, Qiu Shuang, Jiang Cancheng, Kan Chi-Wai, Hu Jinlian, Noor Nuruzzaman, Fei Bin
Materials Synthesis and Processing Lab, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, P. R. China.
Research Centre for Resources Engineering Toward Carbon Neutrality, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, P. R. China.
Small. 2025 Aug 5:e04951. doi: 10.1002/smll.202504951.
Effective manipulation of radiative cooling power is crucial for thermal management systems. However, the potential for radiative cooling regulation through emissivity modulation in textiles remains unexplored. As a proof-of-concept, a self-adaptive radiative cooling fabric (SARCF) is presented, exhibiting high solar reflectance and variable infrared emissivity. The SARCF is created by depositing tungsten doped vanadium dioxide (W-VO) nanoparticles on low-emissivity (low-e) fabrics, followed by welding with nanoporous polyethylene (NanoPE). SARCF demonstrates significant solar reflectance (85.19%) and a promising emissivity contrast (Δɛ, 34.82%) for radiative cooling regulation, driven by the temperature-induced phase transition of W-VO. Indoor and outdoor tests reveal that SARCF outperforms low-emissivity fabrics and white cotton, providing better warming (3 °C higher than low-emissivity fabrics) and cooling (4.67 °C lower than cotton) performance. The coated low-e fabrics also demonstrated exceptional robustness-accelerated washing (10 cycles) retains >96% Δɛ, while abrasion test (2000 cycles) preserves 94.8% Δɛ, confirming mechanical integrity under operational stresses. In summary, this study introduces a novel fabric prototype that achieves temperature-induced emissivity variation and high solar reflectance, marking a significant advancement in personal thermal management through radiative cooling modulation.
有效控制辐射冷却功率对于热管理系统至关重要。然而，通过调节纺织品的发射率来实现辐射冷却调节的潜力仍未得到探索。作为概念验证，本文展示了一种自适应辐射冷却织物（SARCF），它具有高太阳反射率和可变红外发射率。通过在低发射率（low-e）织物上沉积钨掺杂二氧化钒（W-VO）纳米颗粒，然后与纳米多孔聚乙烯（NanoPE）焊接，制成了SARCF。由于W-VO的温度诱导相变，SARCF在辐射冷却调节方面表现出显著的太阳反射率（85.19%）和可观的发射率对比度（Δɛ，34.82%）。室内和室外测试表明，SARCF的性能优于低发射率织物和白色棉布，具有更好的保暖性能（比低发射率织物高3°C）和冷却性能（比棉布低4.67°C）。涂覆的low-e织物还表现出出色的耐用性——加速洗涤（10次循环）后仍保留>96%的Δɛ，而磨损测试（2000次循环）后保留94.8%的Δɛ，证实了其在运行应力下的机械完整性。总之，本研究引入了一种新型织物原型，实现了温度诱导的发射率变化和高太阳反射率，标志着通过辐射冷却调制在个人热管理方面取得了重大进展。
