摘要
SrAl2O4∶Eu2+,Dy3+/TPE是一种新型发光材料,用其制备的电缆护套在黑暗条件下可快速检测电缆状态。本研究先将稀土铝酸锶发光材料(SrAl2O4∶Eu2+,Dy3+)与热塑性弹性体(thermoplasticelastomer,TPE)进行混合,再通过双螺杆挤出机共混制备了SrAl2O4∶Eu2+,Dy3+含量分别为5%、7%、10%、15%的发光材料。借助荧光光谱仪、余辉亮度测试仪等表征手段探讨了不同SrAl2O4∶Eu2+,Dy3+含量发光材料的发光性能。对SrAl2O4∶Eu2+,Dy3+/TPE发光材料在水中浸泡后的pH值进行测定,进一步考察了发光材料的耐水性。研究结果表明:发光材料在TPE中分散较为均匀但出现少量团聚现象;发光材料的晶体结构和光谱性质没有因制作工艺而发生破坏或改变,其光学性能得到保证;发光材料的耐水性能较好,随着SrAl2O4∶Eu2+,Dy3+含量的增加,余辉初始亮度有所提高。余辉时长10h以上,使电缆检测更加便利。
SrAl2O4∶Eu2+,Dy3+/TPE is a new type of luminescent material.Cable shield made from SrAl2O4∶Eu2+,Dy3+/TPE can be quickly detected under dark conditions.The rare earth strontium aluminate luminescent material(SrAl2O4∶Eu2+,Dy3+)was mixed with thermoplastic elastomer(TPE),then formed by hot pressing after blending with a twin screw extruder.The concentrations of the luminous materials SrAl2O4∶Eu2+,Dy3+were 5%,7%,10%and 15%.The luminescent properties of the samples were characterized by means of excitation emission spectra and afterglow light curves.Water-resistance of SrAl2O4∶Eu2+,Dy3+/TPE was evaluated by measuring the pH of water in which the SrAl2O4∶Eu2+,Dy3+/TPE was soaked.The results showed that the luminescent materials were evenly distributed in TPE with a small amount of agglomeration.The crystal structure and spectral properties of the luminescent materials were not damaged or changed by the fabrication process,in which the luminous performance of the luminescent materials was guaranteed.The water-resistance of SrAl2O4∶Eu2+,Dy3+/TPE was good.As the content of SrAl2O4∶Eu2+,Dy3+increases,the initial brightness of the afterglow will increase accordingly,and the afterglow time can be more than 10hours,which provides convenience for cable detection.
作者
沈修宇
朱亚楠
葛明桥
SHEN Xiuyu;ZHU Yanan;GE Mingqiao(Key Laboratory of Eco-textiles(Jiangnan University),Ministry of Education,Wuxi 214122,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2021年第1期106-110,123,共6页
Journal of Materials Science and Engineering
基金
中央高校基本科研业务费专项资金资助项目(JUSRP51505和JUSRP116020)。
关键词
稀土
铝酸锶
热塑性弹性体
光学性能
Rare earths
Strontium aluminate
Thermoplastic Elastomer
luminescence property
