Zn2+ 掺杂 Y2Cu2O5 高近红外反射颜料的制备与性能研究.

In this paper, a series of environment-friendly inorganic pigments with a general formula Y2Cu2-x, ZnxO5 (x=0,0.25, 0.5, 0.75, 1.0) with high near-infrared reflectance are prepared by sol-gel method. The phase structure, reflective properties, color characteristic and thermal stability of the synthesized pigments are studied by X-ray diffractometer (XRD), ultraviolet-visible-near infrared diffuse reflectance spectroscopy (UV-VIS-NIR), CIE-L *a*b* 1976 chromaticity analysis software and thermogravimetry and differential scanning calorimetry (TG-DSC). The results show that the obtained pigment samples mainly exhibit orthogonal crystal structure, and the optimal calcination temperature is 900°C. With the increase of the doping amount of zinc ions, the color of the pigments becomes lighter and the near-infrared solar reflectance of the pigments gradually increases. The highest near-infrared reflectance of the pigments obtained reaches 76.81% in the wavelength range of 780-2500 nm. Therefore, these Y2Cu2-xZnxO5 powder pigments have a great potential in serving as a kind of cool pigments for construct ion, transportation and other fields. [ABSTRACT FROM AUTHOR]