玻璃膜基材料的制备及电致变色机理研究

采用溶胶-凝胶技术，以CH3(CH2)3O]4Ti、La2O3、CoCl2·6H2O为前驱体，在ITO（氧化铟锡）玻璃基板上成功制备了Ti、Ti/La、Ti/Co不同摩尔配比的复合膜，确定了电致变色玻璃膜基材料制备的最佳工艺参数。采用XRD、热重-差热分析（TG-DTA）及电化学检测其膜基材料的循环伏安特性，并分析其电致变色特征机理。研究表明：(1) TiO2薄膜试样的烧成温度、镀膜层数、CH3(CH2)3O]4Ti掺量、掺杂类别是影响膜基材料结构和性能的主要因素；(2)使用二乙醇胺作为螯合剂能够有效抑制Ti (OH)4沉淀的生成；(3)掺杂La2O3和CoCl2·6H2O制备的TiO2玻璃膜基溶胶电致变色性能优良；(4)制备的TiO2变色膜基材料透过率好，循环可逆性高，循环伏安特性明显。研究结果为电致变色膜基材料的开发和应用提供了理论和基础实验依据。

Preparation of Glass Film Base Material and Mechanism Study of Electrically Induced Discoloration

Adopting the sol-gel technology, CH3(CH2)3O]4Ti, La2O3, CoCl2·6H2O as the precursor, the composite membranes with different molar ratio of Ti, Ti/La, Ti/Co are prepared on the ITO glass substrate, the optimum technological parameters for preparation of the base material of the electro-induced discoloration glass are determined. The cyclic voltammetry characteristics of the membrane based materials are detected by XRD, TG-DTA and electrochemical detection, analyzing the mechanism of its color changing. The results show as follows: (1) The sintering temperature coating number, CH3(CH2)3O]4Ti content of the TiO2 iflm sample, and the doping category are the main factors that affect the structure and properties of the membrane based material; (2) Using two alcohol amine as chelating agent can effectively inhibit the formation of Ti (OH)4 precipitation; (3) The properties of the TiO2 glass film prepared by La2O3 and CoCl2·6H2O are fine; (4) Materials based on the preparation of a radiochromic film transmittance, high cyclic reversibility, cyclic voltammetry characteristics signiifcantly, the results of the study for the electric induced radiochromic iflm based material development and application provide a theoretical and experimental basis.