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A High-Performance Passive Radiative Cooling Metafabric with Janus Wettability and Thermal Conduction.
Peibo Du1, Xingshun Zhao1, Xiongwei Zhan1
1National Engineering Research Center for Dyeing and Finishing of Textiles, Key Lab of Science & Technology of Eco-Textile, College of Chemistry and Chemical Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|June 28, 2024
Summary
This study introduces a novel cooling metafabric that integrates passive radiation, sweat evaporation, and thermal conduction for enhanced personal cooling. The innovative textile offers significant temperature reduction and energy savings, improving wearable comfort.
Area of Science:
- Materials Science
- Textile Engineering
- Nanotechnology
Background:
- Growing industrialization and global warming necessitate energy-efficient solutions for cooling and heat-related illness prevention.
- Existing cooling textiles often exhibit limitations in sweat management and wearable comfort under practical conditions.
Purpose of the Study:
- To develop a hierarchical cooling metafabric with integrated passive radiation, thermal conduction, and sweat evaporation capabilities.
- To enhance wearable comfort and address limitations of current cooling textiles.
Main Methods:
- Fabrication of a hierarchical cooling metafabric using an electrospinning strategy.
- Characterization of optical properties, including solar reflectivity and infrared radiation selectivity.
- Evaluation of moisture-wicking properties (water vapor transmission and directional water transport) and thermal conduction.
Main Results:
- The metafabric achieved high solar reflectivity (99.7%) and selective infrared radiation (92.4%).
- Demonstrated strong moisture-wicking (2985 g m⁻² d⁻¹ WVT) and heat-conduction capacity.
- Outdoor experiments showed cooling effects of 13.8°C (dry) and 19.3°C (sweating), with potential annual energy savings of ≈19.3%.
Conclusions:
- The developed cooling metafabric effectively integrates multiple cooling mechanisms for superior performance.
- The textile offers excellent breathability, mechanical strength, washability, and cost-effectiveness.
- This high-performance metafabric presents a promising advancement for next-generation personal cooling textiles.
Keywords:
heat conductionjanus wettabilitymetafabricpassive radiative coolingpersonal heat‐moisture managementMore Related Videos
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