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Polymer-Encapsulated TiO2 for the Improvement of NIR Reflectance and Total Solar Reflectance of Cool Coatings
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2020-09-17 , DOI: 10.1021/acs.iecr.0c03412
Siming Dong , Jing Yang Quek 1 , Alexander M. Van Herk , Satyasankar Jana
Affiliation  

Cool coatings are solar reflective coatings and are applied on roofs, facades, and other exterior surfaces. In this work, the effect of polymer encapsulation was investigated aiming to improve near-infrared (NIR) reflectance of cool coatings. Cool coatings formulated using polymer-encapsulated TiO2 resulted in improvement (up to 10%) of NIR reflectance and, therefore, total solar reflectance in comparison to the coatings formulated using bare TiO2, especially in a high pigment volume concentration system. This is mainly due to the TiO2–TiO2 spacing and improved light scattering from the coating films. Enhanced cooling (2.5–11.2 °C) was also observed during heat buildup measurement tests conducted both in the lab under an artificial IR light source and at outdoor conditions under natural light.

中文翻译:

聚合物包裹的TiO 2用于改善冷涂层的近红外反射率和总太阳反射率

冷涂层是太阳光反射涂层,可应用于屋顶,外墙和其他外表面。在这项工作中,研究了聚合物封装的效果,旨在提高冷涂层的近红外(NIR)反射率。与使用裸露的TiO 2配制的涂料相比,使用聚合物封装的TiO 2配制的冷涂料可提高(高达10%)的NIR反射率,因此可提高总太阳反射率,尤其是在高颜料体积浓度的系统中。这主要是由于TiO 2 -TiO 2涂层之间的间距和改善的光散射。在实验室中在人造红外光源下以及在室外自然光条件下进行的热量积累测量测试期间,还观察到了增强的冷却(2.5–11.2°C)。
更新日期:2020-10-07
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