Thermal driven self-healing infrared and heat shielding composites based on reversible Diels-Alder reaction

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Xin-Yi Ouyang
  • Rui-Fang Wang
  • Qing-Shan Duan
  • Chong-Xing Huang
  • Yang Liu
  • Hui Zhao

Detail(s)

Original languageEnglish
Article number107155
Journal / PublicationProgress in Organic Coatings
Volume172
Online published7 Sept 2022
Publication statusPublished - Nov 2022

Abstract

Infrared and heat shielding materials have a wide range of applications in military infrared invisibility and thermal insulation for energy saving, but mechanical damage during use may reduce the service life. In this study, waterborne polyurethanes/gallium tin oxide (WPU/GTO) composites with good infrared and thermal shielding capabilities were fabricated after the introduction of GTO nanoparticles into the thermal driven self-healing WPU matrix. The results showed that the WPU/GTO composite films can show good healing efficiency through thermally reversible DA reactions, with a self-healing efficiency of 80 % in 30 min at 120 °C. In addition, the presence of GTO gives the composite good thermal shielding properties without affecting its thermal stability. Due to free carrier absorption and plasma reflection, the resulting composite films containing 1 wt% GTO could shield from approximately 95 % of infrared light, with an insulation temperature difference of 15 °C when compared to pure polyurethane. This work provides a feasible solution for the preparation of infrared and heat shielding materials with self-healing capabilities.

Research Area(s)

  • Infrared shielding, Self-healing, Waterborne polyurethane

Citation Format(s)

Thermal driven self-healing infrared and heat shielding composites based on reversible Diels-Alder reaction. / Ouyang, Xin-Yi; Wu, Wei; Wang, Rui-Fang et al.
In: Progress in Organic Coatings, Vol. 172, 107155, 11.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review