抄録
The physical and optical properties of newly synthesized, environmentally friendly, highly reflective green–black (HRGB) pigments (CoO)x(MgO)1−x·n{(Al2O3)y(Fe2O3)1−y} (x = 0.5, y = 0.75, and n = 1) calcined at various temperatures were studied. The pigments were prepared from Fe2O3, Al(OH)3, Mg(OH)2, and CoCO3 by a novel modified solid solution method. The synthesis was performed at a reduced calcination temperature with lower energy consumption than the standard methods. The physical and optical properties (lower magnetization and higher total solar reflectance) of the HRGB pigments were superior to those of related pigments with the same chemical structure. Dependence of physical and spectroscopic properties of the HRGB pigments on the calcination temperature was also studied. Mixed with TiO2, a highly reflective black pigment, synthesized similarly to the HRGB pigment and possessing similar physical properties, exhibited 80% higher reflectivity than a standard black pigment similarly mixed with TiO2.
