The Effects of Using Some Common White Pigments on Thermal and Aesthetic Performances of Pigmented Coatings
The Effects of Using Some Common White Pigments on Thermal and Aesthetic Performances of Pigmented Coatings
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DOI：
10.1299/jtst.4.131
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发表时间：
2009-01-01
影响因子：
1.2
通讯作者：
Komiya, Atsuki
中科院分区：
文献类型：
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作者：
Baneshi, Mehdi;Maruyama, Shigenao;Komiya, Atsuki
在近红外（NIR）区域具有高反射率和在可见光（VIS）区域具有低反射率的涂层表面既可以在阳光下保持凉爽，又可以通过减少反射阳光的眩光来保持其外观。为了设计这种涂层，介绍了一种兼顾热学和美学效果的优化方法。由于白色颜料对太阳光的反射率较高，因此被广泛用于设计冷涂料。然而，使用白色颜料可能会产生眩光，这可能会导致视觉不适。可以通过控制颜料颗粒的大小、颜料的体积浓度和涂层厚度来控制这些影响。在各种可用的白色颜料中，我们选择了二氧化钛、氧化锌和氧化铝进行本研究。采用射线发射模型（REM2），采用辐射元法分析了各向异性散射单分散色素层的辐射传热。同时考虑了准直和漫射太阳辐射。颜色分析采用CIE（国际照明委员会）比色系统。最后，对三种颜料的最佳粒径、颜料体积分数和涂层厚度进行了比较。
A coated surface with high reflectance in the near infrared (NIR) region and low reflectance in the visible (VIS) region can both stay cool in the sun and retain its appearance by reducing the glare of reflected sunlight. To design such coatings, an optimization method that embraces both thermal and aesthetic effects is introduced. White pigments are widely used in designing cool coatings due to their relatively high reflectance of sunlight. However, using white pigments may produce glare, which can cause visual discomfort. It is possible to control these effects by controlling the size of pigment particles, volume concentration of pigments and coating thickness. Among the various white pigments that are available, we chose titanium dioxide, zinc oxide and alumina for this study. Radiative heat transfer in an anisotropic scattering, monodisperse pigmented layer was analyzed using the radiation element method by ray emission model (REM2). Both collimated and diffuse solar irradiations were considered. The CIE (International Commission on Illumination) colorimetric system was used for color analysis. Finally, the optimum values of particle size, volume fraction of pigment, and coating thickness were obtained and compared for the three mentioned pigments.