【作者】 周立娟；

【导师】 雷家珩； 陈永熙；

【作者基本信息】 武汉理工大学 ， 材料工程， 2002， 硕士

【摘要】 本论文的主要工作是研究铬锡红色料的低温合成和光谱性能，实验中采 用了化学共沉淀法、溶胶凝胶法合成了铬锡红色料，并与固相合成法进行了比 较。 在固相法中，主要研究了铬锡红色料的矿物组成对呈色的影响，确定了 较为适宜的配方组成。首先得到了采用预先合成锡榍石制备色料效果要好于 一次性合成色料的结论，为化学共沉淀前驱体合成法找到了理论依据。 在化学共沉淀法中，得到的铬锡红色料合成温度明显低于固相法。本工 作采用SnCl2·2H2O、K2Cr2O7、Na2SiO3、CaCO3为原料，对色料的前驱物进行 了化学计算和理论设计。实验表明，实验结果和理论计算结果相吻合，且得 到的产物在较低的温度即可得到铬锡红（低于固相法100℃），较好地解决了 高档铬锡红色料的低温合成问题。 在溶胶凝胶法中，得到的锡铬红色料的合成温度明显低于固相法的（降 低150℃），也低于化学共沉淀法的。本工作采用正硅酸乙酯（TEOS）、乙醇 （EtOH）、SnCl2·2H2O、CaCO3、CrCl3·6H2O为原料，对TEOS的水解条件进 行了探索，并通过水解粘度、光谱性能的测试对TEOS的水解过程进行了表征。 借助TG-DTA、XRD等测试手段，对三种合成方法进行了比较，初步分析 了铬锡红色料低温合成机理及反应过程；测试了铬锡红色料的反射光谱，结 合载色体锡榍石的结构特点，用晶体场理论较好的解释了铬锡红色料的呈色 机理。更多还原

【Abstract】 In this paper,chrome-tin pink pigments was synthesized by chemical cosedimentation and sol-gel method which were contrasted with solid phase reaction.In the solid phase method, the effect of composition on colour generation was mainly studied. Firstly, the pigment prepared by presynthesized tin sphene was obtained and has a good colour development. Theorical evidence was found by coprecipitation method.Using SnCl22H2CK K2Cr2O7, Na2SiO3 and CaCO, as materials, synthesized temperature of liquid phase method was lower than that of solid phase method. In addtion, the preparation of pigment precursor was proved by chemical calculation and designed theorically. Synthesized temperature of chrome-tin pink by coprecipitation was lower 100 than solid method.Using TEOSx EtOFK SnCl2 2H2O CaCO and CrCl36HO as materials, synthesized temperature of sol-gel was the lowest in three methods. It is declined 150. Water solution of TEOS was expressed by hydrolysis concentration and reflection spectrum curve.By TG-DTA and XRD , three methods was constrasted , synthetic mechanism of low temperature and reaction processing were analysed and reflection spectrum of pigments was tested. From the crystallize chemistry angle, colour gegeration mechnism of chrome-tin pink was claimed by crystalline field theory.更多还原