高近红外反射颜料Y_(6-x)Si_xMoO_(12+σ)的制备及其性能研究  

Preparation and Characterization of Y_(6-x)Si_xMoO_(12+σ) Composite Pigments with High Near-Infrared Reflectance

作　　者：朱洪立[1,2] 于名讯[2] 张玉军[1] 张潇予[3] 李桂群[2] 袁君[2] 

机构地区：[1]山东大学材料液固结构演变与加工教育部重点实验室,山东济南250061 [2]中国兵器工业集团第五三研究所,山东济南250031 [3]烟台大学环境与材料工程学院,山东烟台264005

出　　处：《稀有金属》2014年第4期660-665,共6页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(51072099)资助

摘　　要：采用固相法制备了具有高近红外反射特性的钼酸钇基稀土Y6-xSixMoO12＋σ（0≤x≤1）黄色颜料,借助扫描电镜（SEM）、X射线衍射分析仪（XRD）和分光光度计等测试手段对颜料的微观结构、可见/近红外反射特性、颜色参数等进行了测试和表征,考察了Si4＋掺杂量对颜料的颗粒尺寸、光谱特性以及色相的影响,探讨了颜料的电子结构、晶粒尺寸与颗粒尺寸与近红外反射特性的关系,并考察了其化学稳定性。研究结果表明,颜料的电子结构、晶体结构以及颗粒尺寸均是影响光谱特性的重要因素,当Si4＋掺杂量x=0.6时,球磨时间为30 min时,颜料的颗粒尺寸为1.36μm,颜料表现为菲涅尔反射,且颜料的亮度和黄相均呈最大值,具有最佳的光谱特性（波长范围700～2500 nm）,可达到79.75%;研制的高近红外反射颜料Y5.6Si0.4MoO12＋σ在酸、碱、水等环境下测试,几乎无色差,具有优良的耐酸、碱特性,可应用于超耐久性涂料和塑料制品中,尤其适用于建筑涂料等领域。Novel high near-infrared reflecting inorganic pigments Y6-xSi,MoO12 ＋σ （0 ≤x ≤1 ） were synthesized by doping Si^4＋ in yttrium molybdate through a simple solid-state reaction method. The composites were characterized using scanning electron microscope （SEM）, X-ray diffraction （XRD）, UV-Vis spectrophotometer, and chromaticity analysis. The relations of doping Si^4＋ with yttrium molybdate and pigment＇s particle size, spectral properties and color were analyzed. The correlation between near-infrared spectral reflec- tance and pigment＇s electron structure, crystal size and particle size were studied. Its chemical stability was observed. It showed that when doping Si^4＋ was x = 0.6, the spectral reflectivity in the wavelength range of 700 ～ 2500 nm reached 79.75% ; at the same time, when the ball milling time was 30 min and the particle size of pigments was 1.36μm, pigments had the best brightness, and the pigments showed Fresnel reflection. Chemical stability was tested in the condition of acid, alkali, and water. It was found that the prepared pigments had good chemical stability. It could be used in ultra-enduring coatings, especially in construction coatings.

关 键 词：钼酸钇基 近红外波段 高反射 颜料 稳定性 

分 类 号：TQ622[化学工程—精细化工]