表面活性剂种类在非水解溶胶-凝胶法制备硅酸锆薄膜中的影响

发布时间：2019-03-20 08:04

【摘要】：以无水四氯化锆和正硅酸乙酯为原料,氟化锂为矿化剂,通过调整表面活性剂的种类及添加量,采用非水解溶胶-凝胶法可以制备出表面光滑致密的硅酸锆薄膜。利用X射线衍射仪(XRD)和场发射扫描电子显微镜(FESEM)分析了产物的形貌和晶体结构,通过红外光谱(FT-IR)分析了样品有机官能团变化。实验结果表明相比于非离子表面活性剂聚乙二醇(PEG200)、聚乙烯醇缩丁醛(PVB)和阳离子型表面活性剂十六烷基三甲基溴化铵(CTAB),四丁基溴化铵(TBAB)作为一种低沸点短链结构的阳离子表面活性剂更有利于致密硅酸锆薄膜的制备。在回流后的硅酸锆溶胶中添加3wt.%的TBAB不会影响SiO-Zr异质聚合反应,可以获得致密的纯相硅酸锆薄膜。
[Abstract]:Using anhydrous zirconium tetrachloride and tetraethyl orthosilicate as raw materials and lithium fluoride as mineralizer, the smooth and dense zirconium silicate thin films were prepared by non-hydrolytic sol-gel method by adjusting the type and amount of surfactant. The morphology and crystal structure of the product were analyzed by X-ray diffractometer (XRD) and field emission scanning electron microscope (FESEM), and the changes of organic functional groups of the sample were analyzed by infrared spectroscopy (FT-IR). The experimental results show that compared with non-ionic surfactant polyethylene glycol (PEG200), polyvinyl butyral (PVB) and cationic surfactant cetyltrimethylammonium bromide (CTAB), As a cationic surfactant with low boiling point and short chain structure, tetrabutylammonium bromide (TBAB) is more favorable for the preparation of dense zirconium silicate film. The addition of 3wt.% TBAB to the refluxed zirconium silicate sol has no effect on the heterogeneous polymerization of SiO-Zr, and the dense pure zirconium silicate film can be obtained.
【作者单位】：景德镇陶瓷大学;国家日用及建筑陶瓷工程技术研究中心;
【基金】：国家自然科学基金(51362014,51402135) 江西省优势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)
【分类号】：TB383.2

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