Optically Transparent Polymer Coating Embedded with IR Reflective Rare Earth Yellow Pigment: - Innovative Strategy for Cool Windows
Year: 2019
Journal: Mater. Today-Proc., Volume 9, page 32–37
Authors: Sheemol, V. N.; Mohamed, Peer A.; Ananthakumar, S.
Country: Palawan, PHILIPPINES
Keywords: IR reflectance; Cool windows; Ceramic dispersoids; Rare earth colorant
The increasing atmospheric temperature due to global warming demands development of coatings for glass windows that permits the light but not the heat. It is documented that the absorption of infrared radiations [IR] in the solar spectrum is the cause of heat build-up. Technologically it's a challenge to have optical transparency and IR reflectance combined in a single-coat for any heat control cool-windows. Polymer coatings embedded with IR reflective ceramic dispersoids offer these stringent requirements, i.e light penetration and heat reflection when the glass panels are exposed to direct sun light. This current study focused on this concept. Here IR reflective rare earth colorant was first prepared and subsequently embedded in polymer resin to develop heat management coatings. The characteristic properties of the pigment as well as the coating were analyzed and were found that the inorganic dispersoids enhance the IR reflectance quality of polymer coats from 10% to 40%. The surface morphology, crystallinity and particle size of the product were also investigated. The inorganic-polymer composite coat offers thermal stability, light fastness and photo-physical properties. (C) 2019 Elsevier Ltd. All rights reserved.
