Abstract: To get a warm tone luminous fiber with good afterglow performance, a novel bicompoenet luminous polyacrylonitrile (PAN) fiber was prepared, in which SrAl2O4 and rhodamine B were spun into core and shell respectively by wet coaxial spinning method. Crystal structure was analyzed based on X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) measurement. The elements distribution and valence were studied by energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS) test. The morphology and size distribution of phosphor were researched by scanning electron microscopy (SEM) and laser particle size instrument. Photoluminescence (PL) spectroscopy and afterglow intensity were obtained to research the luminous performance of the phosphor and fiber. The fiber can emit green-red mixture light emits for a long time after exposure to ultraviolet-blue light. The light energy absorption and green luminous performance of inner part attributed to Eu2+ ion characteristic electronic transition, meanwhile, long persistent green light can continuously stimulate rhodamine B and thus long lasting warm light obtained. The luminous efficiency of fiber decrease with the increase of rhodamine B content, meanwhile the color shifts to red gradually. Besides, the bicomponent coaxial fiber has a better color purity than traditional luminous fiber.

中文翻译：

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一种基于SrAl2O4磷光体的暖色调发光聚丙烯腈同轴纤维的制备及性能研究

摘要：为获得具有良好余辉性能的暖色调夜光纤维，采用湿法同轴纺丝法分别将SrAl2O4和罗丹明B纺成核壳型的新型双复合发光聚丙烯腈（PAN）纤维。基于 X 射线衍射 (XRD) 和高分辨率透射电子显微镜 (HRTEM) 测量分析晶体结构。通过能谱仪（EDS）和X射线光电子能谱（XPS）测试研究元素分布和价态。通过扫描电子显微镜(SEM)和激光粒度仪研究了荧光粉的形貌和粒径分布。获得了光致发光（PL）光谱和余辉强度来研究荧光粉和光纤的发光性能。该光纤可发出绿红混合光，经紫外蓝光照射后可长时间发射。内部的光能吸收和绿色发光性能归因于Eu2+离子特征电子跃迁，同时长余辉绿光可以不断激发罗丹明B，从而获得长余辉暖光。纤维的发光效率随着罗丹明B含量的增加而降低，同时颜色逐渐向红色偏移。此外，双组份同轴光纤比传统的发光光纤具有更好的色纯度。长效绿光能不断刺激罗丹明B，从而获得长效暖光。纤维的发光效率随着罗丹明B含量的增加而降低，同时颜色逐渐向红色偏移。此外，双组份同轴光纤比传统的发光光纤具有更好的色纯度。长效绿光可不断刺激罗丹明B，从而获得长效暖光。纤维的发光效率随着罗丹明B含量的增加而降低，同时颜色逐渐向红色偏移。此外，双组份同轴光纤比传统的发光光纤具有更好的色纯度。