Radiative Cooling Fabrics for Indoor Environments by a Porous Nanocomposite Treatment

Korkmaz Memiş N., Kaplan S.

9th International Technical Textile Congress, İzmir, Türkiye, 17 - 18 Ekim 2025, ss.20-23, (Özet Bildiri)

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: İzmir
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.20-23
  • Süleyman Demirel Üniversitesi Adresli: Evet

Özet

Knitted fabrics produced from different materials were treated with polyvinylidene fluoride (PVDF)-zinc oxide (ZnO) porous nanocomposite dispersions for passive cooling performance. Passive cooling by managing natural radiation energy sources show great potential for personal thermoregulation with zero energy consumption and low carbon emission. Therefore, hierarchically porous PVDF-ZnO coatings were developed on the fabrics by a controlled spray-dry procedure. Surface morphologies of the fabrics were evaluated by SEM. Passive cooling performances were evaluated in micro level by a sphere-integrated FT-IR and in macro level by a designed hotplate system simulating an indoor environment and real cloudy weather. Results showed that treated modified polyester and polypropylene exhibited higher mid-infrared emissivity reached up 94% and 92%, respectively. The maximum actual cooling performance (4.7°C) was obtained for bamboo followed by modified polyester fabric with a temperature drop 3.6°C. Findings show the potential of thermal management by managing emissivity of the porous nanocomposite structures