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Mechanically Durable Double-Sided Textile Composites Integrating Radiative Cooling and Dual-Function Heating for

Qi Gao1, A Jun Chang1, Chao-Hua Xue1

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This study presents a durable textile composite for year-round thermal management. It offers radiative cooling and on-demand solar or Joule heating, enhancing material adaptability and application potential.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Thermal Engineering

Background:

  • Current thermal management materials are often monofunctional and mechanically fragile.
  • This limits their application scope and lifespan.
  • There is a need for adaptable, durable materials for year-round thermal control.

Purpose of the Study:

  • To develop a mechanically robust, double-sided textile composite for integrated radiative cooling and on-demand heating.
  • To enable year-round thermal management under diverse environmental conditions.
  • To overcome the limitations of current monofunctional and vulnerable thermal materials.

Main Methods:

  • Fabrication of a textile composite using a two-step coating process with porous TPU/SiO2 and TPU/CNTs.
  • Characterization of the radiative properties (reflectance, emittance, absorptance) of the composite.
  • Evaluation of solar heating and electrical Joule heating performance.
  • Assessment of mechanical properties, including tensile strength and durability.

Main Results:

  • The TPU/SiO2 side achieved significant radiative cooling (8.1 °C day, 9 °C night) due to high reflectance (92%) and emittance (95%).
  • The TPU/CNTs side provided solar heating (12.5 °C increase) and Joule heating (14 °C increase) with high solar absorptance (96%) and electrical conductivity (65 S/cm).
  • The composite demonstrated excellent mechanical strength and durability.

Conclusions:

  • The developed textile composite offers flexible, year-round thermal management through combined radiative cooling and dual-function heating.
  • Its mechanical robustness supports long-term outdoor applications.
  • This material represents a significant advancement over conventional, monofunctional thermal management solutions.