All-Weather 3D Self-Folding Fabric for Adaptive Personal Thermoregulation

Area of Science:

• Materials Science
• Textile Engineering
• Wearable Technology

Background:

• Personal thermoregulation is crucial for comfort, health, and efficiency, especially with global climate change.
• Existing thermal fabrics often have static properties, limiting their adaptability to dynamic environmental conditions.
• There is a growing need for advanced textiles that can actively manage thermal comfort.

Purpose of the Study:

• To develop an innovative three-dimensional (3D) self-folding knitted fabric with dual thermal regulation capabilities.
• To investigate the fabric's performance in both warming and cooling modes.
• To assess the fabric's durability, comfort, and potential applications in personal thermal management.

Main Methods:

• Fabrication of a 3D self-folding knitted textile using scalable knitting techniques.
• Characterization of thermal properties in warming mode (trapping air for high thermal resistance).
• Evaluation of cooling mode performance using titanium dioxide (TiO2) and polydimethylsiloxane (PDMS) coatings for enhanced solar reflectivity and infrared emissivity.

Main Results:

• The fabric achieves high thermal resistance (0.06 m² K W⁻¹) in its 3D state for warming.
• In the 2D state, coatings provide high solar reflectivity (89.5%) and infrared emissivity (93.5%), resulting in a 4.3 °C cooling effect under sunlight.
• The fabric demonstrates excellent durability (>1000 folding cycles), washability, breathability, and flexibility.

Conclusions:

• The developed 3D self-folding fabric offers an innovative solution for adaptive personal thermal management.
• This textile addresses limitations of static thermal fabrics, providing dual-mode regulation for enhanced comfort and efficiency.
• Potential applications include wearable technology, extreme environment gear, and sustainable fashion.