Zn2+掺杂CaCu3Ti4O12的颜色及近红外反射性能

Chromatic and Near-infrared Reflective Properties of Zn2+ Doped CaCu3Ti4O12

文中采用固相法制备了一种具有较高近红外反射特性的新型无机颜料CaCu(3-x)ZnxTi4O12.用XRD、色差仪和紫外-可见光-近红外分光光度计等对产物的结构、颜色和反射特性进行研究.结果表明,随着取代程度的增加,晶体的结构由单相变为多相.随着Zn2+离子掺杂量增加(x=0.0~0.6),黄色度从22.35增加到29.62,近红外反射比从52.3%增加到62.3%.CaCu3Ti4O12和CaCu2.4Zn0.6Ti4O12颜料涂层的近红外反射比分别为46.4%和55.2%,该颜料还具有良好的化学稳定性和热稳定性.这些事实表明CaCu(3-x)ZnxTi4O12颜料在冷涂层中有着很大的应用潜力.

A new-type inorganic pigment CaCu(3-x)ZnxTi4O12 with high near-infrared reflective properties was prepared with solid-phase method.The structure,colour and reflective properties were investigated by XRD,Color-Eye automatic differential colorimeter and UV-vis-NIR spectrophotometer.The results show that crystal structure changes from single phase to multi-phase with the increase of substitution degree.With the increasing of doping amount of Zn2+ions(x=0.0~0.6),the yellow hue b*increases from 22.35 to 29.62,and the near infrared reflectance ratio increases from 52.3%to 62.3%.The near-infrared reflectance of CaCu3Ti4O12 and CaCu2.4Zn0.6Ti4O12 pigments coating are 46.4%and 55.2%,respectively.The pigments also have chemical stability and thermal stability.These fact show that the prepared CaCu(3-x)ZnxTi4O12 pigments have great application potential in"cool colorant".