基于两种载体合成发光玻璃的实验研究

Study on Luminescent Glasses Based on Two Kinds of Carriers

目的为稀土发光材料寻找良好的玻璃载体，并进一步合成蓄光发光玻璃，使其能在建筑、交通、艺术装潢等方面得到应用．方法实验采用熔融制备法合成掺杂稀土发光材料的长余辉玻璃．以纯硼酸盐体系玻璃B2O3-Na2O-MO和硼硅酸盐体系SiO2-B2O3-Na2O-M2O-MO低熔点玻璃作为载体，掺杂铝酸锶铕镝发光粉，合成了稀土蓄光发光玻璃．结果主要成分B2O3摩尔分数为65％～80％，Na2O为15％～35％，可形成均质透明的硼酸盐系玻璃；主要成分SiO2摩尔分数为25％～35％，助溶剂B2O3为20％～35％，Na2O为15％～35％，可形成均质透明的硼硅酸盐玻璃．根据SEM结果，发光材料粒度减小，发光玻璃的亮度降低，余辉时间减短；发光材料颗粒过大，会造成玻璃表面粗糙，发光分布不均匀．结论两种体系的玻璃载体的熔点比较低，且不与发光粉发生反应，可以利用上述硼酸盐体系玻璃和硼硅酸盐体系玻璃作为载体，合成稀土蓄光发光玻璃．

The experiment is performed to seek the good glass carriers for the rare earth luminescent material and then to synthesize the luminescent glass which can be applied in construction, transportation and artistic decoration. The luminescent glasses were prepared by adopting the luminescent powder SrAL2O4 ： Eu, Dy in the pure borate glass 132O3 - Na2O- MO and borated silicate glass SiO2 - B2O3 - Na2O - M2O - MO with the high temperature melting technology respectively. The results indicate that when the molar fraction of the fundamental ingredient B2O3 is 65 % -80 % and Na2O is 15 % -35 %, the pure borate glass with smooth and transparent surface can be grown. When the SiO2 molar fraction is 25 % - 35 %, B2O3 20 % - 35 % and Na2O 15 % - 35 %, the borated silicate glass with smooth and transparent surface can be grown. According to SEM results, the luminescent intensity of the luminescent glass lessened and the decay time shortened with a diminution of the granularity. The oversize particles exerted an influence on smoothness of the glass surface and uniformity of the luminescence. In addition, the two kinds of glass carriers by no means have the chemical reaction with the luminescent material. The luminescent glasses with good stability and luminescent effect were synthesized.