摘要
将长余辉夜光粉铝酸锶(SrAl2O4∶Eu,Dy)分散到非晶态无机玻璃中制成长余辉发光玻璃是提高夜光粉稳定性的重要途径之一.本文采用低熔点的玻璃体系PbO-SiO2-H3BO3-Na2CO3-Al2O3制备了铝酸锶长余辉发光玻璃,并借助高温显微镜、X射线衍射仪、紫外可见分光光度计、三维数字显微镜等仪器对所制玻璃样品进行分析表征.结果表明:(1)在较低的温度(548℃)即可实现对铝酸锶夜光粉的有效封装;(2)高温焙烧未对铝酸锶夜光粉的组成造成破坏;(3)铝酸锶夜光粉均匀分散在基质玻璃中;(4)夜光粉含量为3％时所得发光玻璃样品具有最高透过率49％,而且余辉性能较理想.
Abstract
Dispersing-long afterglow phosphorescent powders strontium aluminate ( SrAl2O4:Eu,Dy) into amorphous inorganic glass to prepare long afterglow luminescent glass is one of the important ways to improve the stability of SrAl2O4:Eu,Dy. In this paper,the long afterglow luminescent glass of strontium aluminate was prepared by using the glass system of PbO-SiO2-H3BO3-Na2CO3-Al2O3 with low melting point,and the obtained glass samples were characterized via X-ray diffractometer,3D digital microscope,high-temperature microscope,and UV-visible spectrophotometer. The results showed that the effective encapsulation of SrAl2O4:Eu,Dy can be realized at a lower temperature of 548 ℃,the strontium aluminate luminous powders were uniformly dispersed in the glass matrix,and the luminescent glass samples ( 3％SrAl2O4:Eu,Dy) exhibited the best transmittance of 49％,with ideal afterglow performance.
维普
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