摘要
以成纤聚合物PET为纤维基材,添加SrAl2O4∶Eu2+,Dy3+发光材料制备了5种具有不同色相的稀土铝酸锶夜光涤纶纤维样品,采用X射线衍射仪、荧光光谱仪、长余辉测试仪、微机热释光剂量仪表征了纤维的晶相结构、激发发射光谱、余辉衰减规律和热释光性能,着重阐述了纤维余辉衰减规律和陷阱分布情况。结果表明,无机透明色料对纤维的余辉衰减规律影响不大,但样品的余辉初始亮度不同,呈现白色纤维>绿色纤维>黄色纤维>蓝色纤维>红色纤维,添加色料的色相与色光越接近,余辉亮度越高。另外,无机透明色料对热释峰发光强度产生一定的影响,白色、黄色和绿色夜光纤维的E值相对较小,而蓝色和红色夜光纤维的E值相对较大,与纤维余辉曲线结果基本吻合。
Rare-earth aluminate strontium luminous PET fiber samples with five kinds of different hues were prepared by adding the fiber-forming polymers PET chips as base materials and SrA12 04 ： Eu^2＋ , Dy^3＋ luminescent ma- terials. The phase composition, fluorescence spectrum, afterglow decay laws and thermoluminescent characteristics of the fiber were measured by XRD, fluorescence spectrum tester, afterglow tester and TL dosimeter. The afterglow de cay laws and trap distribution were mainly elaborated. The results indicated that inorganic transparent pigments have little impact on the afterglow decay laws, but the afterglow initial brightness of samples were different, which presen- ted the rules of white fiber〉green fiber〉yellow fiber〉blue fiber〉red fiber. The closer the hues of pigments are, the higher the afterglow brightness of samples are. In addition, the inorganic transparent pigments affected the lumine- scent intensity of thermoluminescent peak to some extent. The E values of white, yellow and green luminescent fiber was lower than that of hlue and red luminescent fiber relatively, which coincided with the results of the afterglow curves basically.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第18期14-17,33,共5页
Materials Reports
基金
国家自然科学基金(21171074/B010201)
江苏高等学校优秀科技创新团队
关键词
夜光涤纶纤维
无机透明色料
余辉衰减
热释光
luminous polyester fiber, inorganic transparent pigment, afterglow decay, thermoIuminescence
