基于钇钼黄色陶瓷色料的制备及性能研究

发布时间：2018-03-20 16:42

  本文选题：固相球磨法　切入点：钇钼黄色色料　出处：《华东理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：耐高温的无机环保黄色色料一直是材料领域的研究热点,可广泛应用于陶瓷、玻璃、建筑外墙等着色与装饰领域。目前,国内市场的陶瓷色料生产已经从成长期和高速发展期逐渐步入稳定发展和成熟期,以后的主要任务是要提高产品的质量以及开发新产品。近年来报导的无机黄色色料大多存在着耐温性差、含有重金属元素、呈色较弱、制备成本高昂等缺点,限制了它们的应用。本课题首先研究了球磨法中粉末细化的最佳工艺条件,并通过高温烧结法来制备Y_4MoO_9黄色色料。然后分别选用Zr/Ta/Tb/Bi元素对Y_4MoO_9色料进行掺杂,确定最佳工艺条件,采用XRD、XPS、EDS、SEM、UV-vis-NIR、CIE等测试手段对无机色料的结构与性能进行表征。结果表明新型的钇钼黄色色料具有较好的色饱和度、颜色鲜艳,是一种较好的耐高温黄色无机环保色料。(1)球磨法细化钇钼黄色料的原料的最佳工艺条件为:采用去离子水为球磨溶剂,球磨速率为300rpm/min,原料、锆珠、去离子水的质量比为1:2:1,球磨时间为6h。(2)采用马弗炉在1400℃下高温烧结,能够制备晶相完整的Y_4MoO_9黄色色料,其色度值分别为:L*= 95.1,a*=-8.3,b*= 48.4。(3)采用锆(Zr)元素对Y_4MoO_9进行掺杂,在1400℃烧结制备Y4_xZrxMo09+δ(0≤X≤0.8),色料 Y_(3.8)Zr_(0.2)MoO_(9+δ)黄色色度值最佳(L*= 93.1,a*=-4.8,b*= 57.5),主晶相为Y_4MoO_9,具有较强的耐酸耐碱性能,近红外光谱漫反射率约90%,可作为节约能源的着色剂,应用于建筑外墙和屋顶上。(4)采用钽(Ta)元素对Y_4MoO_9进行掺杂,在1400℃烧结制备的Y3.9Ta0.1MoO9+δ(L*=91.7,a*=-3.8,b*= 59.8)具有较好的黄色色度值,主晶相为Y_4MoO_9。(5)采用铽(Tb)元素对Y_4MoO_9进行掺杂,在1400℃烧结制备Y4_xTbxMo09+δ(0≤X≤0.05),随着铽掺杂量的增加,由绿相黄转变为正黄、桔黄色,但其主晶相均为Y_4MoO_9。(6)采用铋(Bi)元素对Y_4MoO_9进行掺杂,制备Y4-xBixMoO9+δ(0≤X≤1.6)色料,其最佳烧结温度是1200℃。当x = 0.8,能获得较好的桔黄色色料(L*= 78.1,a*= 10.2,b*=45.6),色料晶相为Bi2MoO6和Y6MoO12的复合晶相。(7)利用水作为溶剂,制备了粒径大小为0.923μm,粘度为0.381Pa.s,表面张力约为40 mN.m-1的Y_(3.8)Zr_(0.2)MoO_(9+δ)黄色陶瓷墨水。
[Abstract]:High temperature resistant inorganic environmentally friendly yellow pigment has been the research hotspot in the field of materials. It can be widely used in the fields of ceramic, glass, building exterior wall and other coloring and decoration fields. At present, The production of ceramic pigments in the domestic market has gradually stepped into a stable and mature stage from the period of growth and the period of high speed development. The main tasks in the future are to improve the quality of the products and to develop new ones. In recent years, most of the inorganic yellow pigments reported in recent years have some disadvantages, such as poor temperature resistance, heavy metal elements, weak color, high cost of preparation, etc. The application of Y4MoO9 is limited. In this paper, the optimum technological conditions of powder refinement in ball milling are studied, and Y4MoO9 yellow pigment is prepared by high temperature sintering. Then the Y4MoO9 pigment is doped with Zr/Ta/Tb/Bi element, and the optimum technological conditions are determined. The structure and properties of inorganic pigments were characterized by means of XRDX, XRDP, EDSX, SEMX, UV-vis-NIR, CIE, etc. The results showed that the new yttrium molybdenum yellow color had better color saturation and bright color. The optimum technological conditions for refining yttrium molybdenum yellow material by ball milling are as follows: deionized water is used as ball milling solvent, milling rate is 300rpm / min, raw material, zirconium bead, The mass ratio of deionized water is 1: 2: 1 and the milling time is 6 h. 2) Y4MoO9 yellow color with intact crystal phase can be prepared by marover furnace sintering at 1400 鈩，

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