金红石型Mg_xFe_yTi_(1-x-y)O_2无机颜料的制备及其性能研究
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摘要
采用高温固相法制备了一系列新型的Mg_xFe_yTi_(1-x-y)O_2(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。Mg~(2+)、Fe~(3+)共掺杂的无机颜料具有高的近红外反射率,其随着Mg~(2+)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Mg_xFe_yTi_(1-x-y)O_2颜料粉体可作为冷颜料应用于热反射建筑涂料。
A novel class of inorganic pigments with general formula Mg_xFe_yTi_(1-x-y)O_2(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. Mg~(2+),Fe~(3+) co-doped pigments possess high near-infrared reflectance. It can be seen that the NIR reflectance increases with increase of Mg~(2+) 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 Mg_xFe_yTi_(1-x-y)O_2 pigment powders have great potential in serving as cool pigment for building coatings.
A novel class of inorganic pigments with general formula Mg_xFe_yTi_(1-x-y)O_2(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. Mg~(2+),Fe~(3+) co-doped pigments possess high near-infrared reflectance. It can be seen that the NIR reflectance increases with increase of Mg~(2+) 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 Mg_xFe_yTi_(1-x-y)O_2 pigment powders have great potential in serving as cool pigment for building coatings.
引文
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[7] Wang J L,Li Y Q,Byon Y J,et al.Synthesis and characterization of NiTiO3yellow nano pigment with high solar radiation reflection efficiency[J].Powder Technology,2013,235(5):303-306.
[8] Li Y Q,Mei S G,Byon Y J,et al.Highly Solar Radia tion Reflective Cr2O3—3TiO2Orange Nanopigment Prepared by a Polymer-Pyrolysis Method[J].Acs Sustainable Chemistry&Engineering,2013,2(2):318-321.
[9] Zou J,Zhang P,Liu C,et al.Highly dispersed(Cr,Sb)-co-doped rutile pigments of cool color with high near-infrared reflectance[J].Dyes&Pigments,2014,109(5):113-119.
[10] Biswas S K,Dhak D,Pathak A,et al.C hemical synthesis of environment-friendly nanosized yellow titanate pigments[J].Materials Research Bulletin,2008,43(3):665-675.
[11] Raj A K V,Rao P P,Divya S,et al.Terbium doped Sr2MO4[M=Sn and Zr] yellow pigments with high infrared reflectance for energy saving applications[J].Powder Technology,2017,311:52-58.
[12]张捷,魏子栋,王春辉,等.掺杂氧化铬颜料的红外反射特性研究[J].无机材料学报,2010,25(12):1303-1306.
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