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Preparation and characterization of PVC / Cs x WO 3 composite film with excellent near‐infrared light shielding and high visible light transmission
Author(s) -
Su Keshun,
Mao Zepeng,
Yang Zhangbin,
Zhang Jun
Publication year - 2021
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.21811
Subject(s) - materials science , composite number , transmittance , composite material , tin oxide , visible spectrum , indium tin oxide , nanoparticle , electromagnetic shielding , tin , optoelectronics , oxide , nanotechnology , metallurgy , layer (electronics)
Abstract Near‐infrared (NIR) shielding is essential not only in the building and automobile glass films but also in achieving energy conservation. However, effectively shielding NIR and maintaining high transmittance in the visible light region have been great challenges in the past decade. Recently, hexagonal cesium tungsten bronze (Cs x WO 3 ) nanoparticles have been widely studied due to the excellent transparency in the visible light region and strong heat‐shielding ability in the NIR region. Herein, a design concept of transparent polyvinyl chloride (PVC)/Cs x WO 3 composite film, as a heat insulation material for glasses, was proposed. To achieve this purpose, the PVC/Cs x WO 3 composite film was prepared by incorporating Cs x WO 3 slurry with better dispersion than traditional Cs x WO 3 nanoparticles powder into a transparent PVC matrix. By the UV‐Vis‐NIR spectrophotometer characterization, the PVC/Cs x WO 3 composite film containing 2.1 phr Cs x WO 3 slurry displays high blocking of NIR (78%) and high transmittance of visible light (76%). In order to further understand the actual heat insulation effect from the PVC/Cs x WO 3 composite films, the indoor sunlight simulation test and outdoor cooling experiment with solar illumination variations were carried out, which both showed heat insulation that is superior to the antimony tin oxide and indium tin oxide thin films prepared in our previous work. In addition, the mechanical property of PVC/Cs x WO 3 composite films shows almost no change with the increase of Cs x WO 3 slurry. The PVC/Cs x WO 3 composite films simultaneously achieve excellent shielding of NIR and high transmittance of visible light, which makes it an ideal material to alleviate the current building energy consumption issues.