用于夜光纤维的稀土长余辉材料的耐水性研究

Study on water resistance of rare- earth long afterglow material for luminescent fibers

夜光纤维是一种添加了稀土长余辉发光材料、光致发光的高科技功能纤维,在纤维用长余辉发光材料中,以SrAl2O4:Eu2+,Dy3+发光性能最佳。通过改变水处理发光材料的测试条件,阐明了其对材料的发光性能所产生的影响,采用X射线衍射仪、荧光光谱仪、长余辉测试仪对材料的晶相结构、荧光发射光谱、余辉衰减规律进行表征。结果表明,经过水处理后的样品晶相发生了变化,主发射峰发生了蓝移,发光强度比未经过水处理的前发光强度小得多,经过水处理样品的初始发光亮度远低于原样品,未呈现原样品的快衰减过程。

Luminescent fiber is a photolumineseent high-tech functional fiber and made by adding rare-earth long afterglow material, in which the luminous property of SrA1204 ：Eu2＋ , Dy3＋ is the best. In this research, the test conditions of luminescent material water treatment was changed, which affected the luminous property of the material. The crystal phase structure, fluorescence emission spectrum and afterglow decay laws were measured by XRD, fluorescence spectrum tester and long afterglow tester. The results indicate that the crystal phase of the water treatmented samples is changed, and the main emission peaks occurred with blue shift. The luminescent intensity is much lower than that of the original SrA1204 ：Eu2＋ , Dy3＋. The initial brightness of treated samples is lower than that of the original samples as well, not showing a rapid decay process phenomenon.