Abstract
Nanocrystalline cesium tungsten bronze (CsxWO3) exhibits high transparency and near-infrared blocking effect caused by localized surface plasmon resonance and small-polaron absorption, making it a promising transparent heat insulation material. CsxWO3 has certain application in energy-saving coated glass for building, but its application in laminated glass, another widely used building glass, has rarely been studied. The research on laminated glass mainly focuses on safety, but it also has high energy-saving potential, and the research in this area is relatively backward. Compared with the glass coating whose thickness limits the application of thermal insulation materials, the interlayer of laminated glass can introduce both infrared shielding materials and low thermal conductivity materials by virtue of its larger thickness, so as to achieve better thermal insulation effect. Herein, a new type of thermal insulation laminated glass was proposed. For this purpose, two types of thermal insulation nanomaterials, nanocrystalline CsxWO3 and SiO2 aerogel, were incorporated into polyvinyl butyral (PVB) to prepare PVB/CsxWO3/ SiO2-aerogel composite for the preparation of laminated glass. The materials containing CsxWO3 exhibited high visible light transmittance (75%) and NIR shielding rate (77%). In addition, when appropriate content of SiO2 aerogel was added, the thermal insulation was further improved with minimal change in the transmittance spectrum. The PVB/CsxWO3/SiO2-aerogel achieved both good visible light transmittance and excellent thermal insulation performance, making it a composite material for laminated glass in line with contemporary green energy-saving concepts.
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Acknowledgements
This work was partly supported by Hebei Construction Group Corporation Limited, PR China in terms of funding and equipment, and partly supported by Tsinghua University and Beijing University of Science and Technology in terms of equipment and materials.
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YM (Co-first author 1) contributed to methodology, formal analysis, validation, writing—original draft. YL (Co-first author 2) contributed to conceptualization, project administration, investigation, writing—review and editing, and supervision. XY done data curation and validation. ZY done resources and supervision. ZZ cone resources and funding acquisition. JX helped in investigation, resources, and supervision. KN (Co-corresponding author 1) contributed to conceptualization, supervision, project administration, and funding acquisition. YW (Co-corresponding author 2) contributed to conceptualization, supervision, project administration, and resources.
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Mu, Y., Liu, Y., Yang, X. et al. Preparation and characterization of PVB/CsxWO3/SiO2(aerogel) nanocomposites for laminated glass with high visible light transmission and excellent thermal insulation. J Mater Sci 59, 6322–6333 (2024). https://doi.org/10.1007/s10853-024-09557-w
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DOI: https://doi.org/10.1007/s10853-024-09557-w