Materials Today Communications, Journal Year: 2024, Volume and Issue: unknown, P. 111376 - 111376
Published: Dec. 1, 2024
Language: Английский
Polymer Composites, Journal Year: 2025, Volume and Issue: unknown
Published: May 7, 2025
Abstract The development of high‐performance protective clothing is essential for ensuring the safety and comfort healthcare workers. Traditional materials often face challenges in breathability, waterproofing, thermal management. In this study, we fabricated polylactic acid/silicon dioxide–polyvinylidene fluoride /alumina (PLA/SiO 2 –PVDF/Al O 3 ) composite fabrics by coating PLA/SiO microfibers with PVDF/Al . resulting composites exhibited a microfibrous structure 82.1% porosity fiber diameters 10 μm, leading to enhanced air permeability (115.1 mm/s) water vapor (1686.4 g/m ·24 h). incorporation PVDF Al improved waterproofing properties significantly, increasing contact angle 138.1° hydrostatic pressure resistance 2382.2 Pa. Furthermore, radiative cooling efficiency was markedly enhanced, temperature reduction 9.0°C compared uncoated microfibers, achieving 87.4% reflectance 98.4% emissivity. These results demonstrate that fabrics, through simple process, exhibit excellent efficient daytime cooling, making them highly suitable applications. Highlights breathable acid were developed. fabric demonstrates μm microfibers. coated specimen hydrophobicity, robust protection. High emissivity (98.4%) indicates cooling.
Language: Английский
Citations
0
Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: 343, P. 122482 - 122482
Published: July 16, 2024
Language: Английский
Citations
3
Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 28, 2024
Abstract Maintaining the stability of human body temperature is basis ensuring normal life activities witness, and emergence various functional clothing committed to assisting in thermal comfort range changeable environment. However, achieve dual‐mode regulation for cooling insulation on an integrated material without energy input addition particles has thus far been a huge challenge. Herein, biomimetic camel‐fur designed micro‐extruded physically foamed porous elastic fiber (MEPF) using thermoplastic polyurethane (TPU) elastomer as raw reported, its dual‐layered fabric (MEPFT‐d) effective personal comfortable management at extreme differences. Benefit from micro‐nano‐pores structure, MEPFT‐d represents radiate capacity by high solar reflectance emissivity, behaves low conductivity delaying heat scattering, promotes evaporative unidirectional water transport. These excellent properties ensure that reduces loss cold weather (7.2 °C higher than cotton) blocks outside hot (10.2 lower cotton), which suitable complex outdoor scenes. The cost‐effectiveness superior wearing this work provide innovative pathways sustainable energy, smart textiles, applications.
Language: Английский
Citations
3
EcoMat, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 12, 2024
ABSTRACT The temperature of metal‐based facilities rises significantly under high outdoor solar irradiation, leading to serious safety accidents. application active cooling technology poses challenges due its energy consumption, especially in complex environments. Passive devices with reflection and thermal emission can continuously cool objects sunlight. However, the white or silvery passive do not meet need for aesthetics specific demands. Here, we present a hierarchical metapaint that simultaneously achieve vibrant color ability. top layer selectively absorbs visible wavelengths display desired colors, while underlayer boosts near‐to‐short wavelength infrared (NSWIR) light prevent heating. metapaint‐coated metal is resistant low temperatures, acidic alkaline environments, simulated seawater. It also has satisfactory anti‐fouling properties. When compared coated without commercial paint, paint (metapaint) up 9.7°C 17.1°C. excellent performance, attributed broad‐spectrum selective regulation function. Our work offers simple, inexpensive, scalable approach reduce usage promote low‐carbon lifestyle. image
Language: Английский
Citations
2
International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 292, P. 139239 - 139239
Published: Dec. 28, 2024
Language: Английский
Citations
2
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(51), P. 70737 - 70745
Published: Dec. 13, 2024
Passive daytime radiative cooling is receiving more and attention as a method that does not consume energy to cool objects. However, most materials require the mixing of multiple particles, which increases manufacturing process requirements. Most are susceptible outdoor abrasion, pollution, UV exposure, leads decreased performance. In this paper, biomimetic film with both self-cleaning functions was prepared by simple evaporation-induced self-assembly spraying using Al2O3 main radiatively raw material, poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] additive, polydimethylsiloxane binder. Therefore, we can get biomimetic-Al2O3–P(VDF-HFP)-PDMS (BAPPF). The BAPPF spectrally selective. Specifically, reflectance in solar spectrum (0.45–0.89 μm) exceeded 100%, average thermal effect (0.78–1.10 99.92%. addition, had 96.97% (0.3–2.5 90.55% mid-infrared emissivity atmospheric window (8–13 μm). combined performance enabled reduce temperature up 8.4 °C over air tests. What's more, excellent superhydrophobic properties, water contact angle 159°. prevented contamination maintained even when working outdoors for long periods time. Furthermore, high after mechanical friction, chemical corrosion, aging, impact, has broad reference value application prospects.
Language: Английский
Citations
1
Materials Today Communications, Journal Year: 2024, Volume and Issue: unknown, P. 111376 - 111376
Published: Dec. 1, 2024
Language: Английский
Citations
1