摘要
采用稻壳为碳源,无水四氯化锆(ZrCl_4)为锆源,正硅酸乙酯(TEOS)为硅源,氟化锂(LiF)为矿化剂,聚乙烯醇缩丁醛(PVB)为分散剂,通过非水解溶胶-凝胶法制备了硅酸锆包裹炭黑(C@ZrSiO_4)黑色色料。通过X射线衍射(XRD)、X射线荧光光谱仪(XRF)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对稻壳及色料的组成结构和显微形貌进行了表征,同时采用CIE-L*a*b*色度仪考察了C@ZrSiO_4色料的色度。实验结果表明,以200℃干燥的稻壳为碳源有利于纯相ZrSiO_4的合成。当干燥稻壳含碳量为硅酸锆质量的3.75wt.%时制得的C@ZrSiO_4色料发色效果最佳,色度值为L*=47.25,a*=0.59,b*=1.81。稻壳添加量过少时,原位碳化的炭黑含量不足影响呈色;稻壳添加量过多则不利于致密包裹结构的形成,最终导致L*值增大。
Zircon encapsulated carbon （C@ZrSiO4） black pigment was synthesized via non-hydrolytic sol-gel method, using rice huskpowder as carbon source, anhydrous zirconium tetrachloride as zirconium source, tetraethyl orthosilicate （TEOS） as silicon source, lithiumfluoride （LiF） as mineralizer, polyvinyl butyral （PVB） as dispersant, respectively. The structure and morphology of rice husk powders and thepigments were studied by using X-ray diffraction （XRD）, X-ray fluorescence （XRF）, scanning electron microscope （SEM） and transmissionelectron microscopy （TEM）, while the chromatic value of the pigments was characterized by CIE-L＊a＊b＊ color system. The results showthat pure ZrSiO4 can be prepared by using 200 ℃ dried rice husk as carbon source. The proper weight ratio of carbon to ZrSiO4 is 3.75 wt.%.Therefore, the C@ZrSiO4 pigment exhibits excellent coloring performance with L＊=47.25, a＊=0.59, and b＊=1.81. The deficiency of rice huskcauses the shortage of carbon content, resulting in the poor chromatic performance. However, excessive rice husk hinders the dense coating’sformation, which also causes the high L＊ value.
出处
《陶瓷学报》
CAS
北大核心
2016年第5期525-530,共6页
Journal of Ceramics
基金
国家自然科学基金(51362014
51402135)
江西省优秀科技创新团队建设计划项目(20133BCB24010)
江西省科技厅青年科学基金(20142BAB216006)
江西省教育厅基金(GJJ150887
GJJ150919)
