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金红石型MgxFeyTi1-x-yO2无机颜料的制备及其性能研
作者：张少丹，包维维，邓志峰，郝晓丽，蒋鹏
（陕西理工大学，材料科学与工程学院，陕西 汉中 723000）
摘要：采用高温固相法制备了一系列新型的MgxFeyTi1-x-yO2（x=0~0.05，y=0~0.05）无机颜料。利用X-射线衍射仪（XRD）、紫外/可见/近红外分光光度计、Color CIE 1976 L*a*b*色度分析软件和TG-DSC等对颜料样品的结构、近红外反射性能、颜色及热稳定性等进行了测试表征。结果表明，所合成的颜料样品均为金红石型结构。Mg2+、Fe3+共掺杂的无机颜料具有高的近红外反射率，其随着Mg2+掺杂量的增加反射率逐渐增大，在700~2500 nm波长范围内的近红外反射率达80%以上。同时，合成的颜料样品还表现出良好的色度及优异的热稳定性。因此，该MgxFeyTi1-x-yO2颜料粉体可作为冷颜料应用于热反射建筑涂料。
关键词：MgxFeyTi1-x-yO2颜料；共掺杂；近红外；高反射；冷颜料
中图分类号：TU56+2；TQ622 文献标识码：A 文章编号：1001-702X（2019）02-0049-04
Preparation and performance of rutile MgxFeyTi1-x-yO2 inorganic pigments
ZHANG Shaodan，BAO Weiwei，DENG Zhifeng，HAO Xiaoli，JIANG Peng
（School of Materials Science and Engineering，Shaanxi University of Technology，Hanzhong 723000，China）
Abstract：A novel class of inorganic pigments with general formula MgxFeyTi1-x-yO2（x=0~0.05，y=0~0.05） have been successfully prepared by the high temperature solid-state method. The phase structure， near-infrared reflectance，color parameters and thermal stability were tested and characterized by X-ray diffraction（XRD），UV/vis/NIR spectroscopy，color CIE 1976 chromaticity analysis
software and thermogravimetry and differential scanning calorimetry（TG-DSC）. The results show that all synthesized pigments have
rutile structure. Mg2+，Fe3+ co-doped pigments possess high near-infrared reflectance. It can be seen that the NIR reflectance increases with increase of Mg2+ concentration. The near-infrared reflectance is up to 80% in the wavelengths ranging from 700~2500 nm. Meanwhile，the current synthesized pigments also possess good chromatic properties and thermal stability. Therefore，these MgxFeyTi1-x-yO2 pigment powders have great potential in serving as cool pigment for building coatings.
Key words：MgxFeyTi1-x-yO2 pigments，co-doping，near-infrared，high reflectance，cool pigment