Structure and luminescent properties of luminous polypropylene fiber based on Sr2MgSi2OT:EU^2+,Dy^3+ |
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引用本文: | 罗军,高强,张开砚,葛明桥,刘佳林.Structure and luminescent properties of luminous polypropylene fiber based on Sr2MgSi2OT:EU^2+,Dy^3+[J].中国稀土学报(英文版),2014,32(8):696-701. |
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作者姓名: | 罗军 高强 张开砚 葛明桥 刘佳林 |
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作者单位: | Key Laboratory of Science and Technology of Eco- Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China |
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基金项目: | Project supported by National Natural Science Foundation of China (21171074) and Fundamental Research Funds for the Central Universities of China (JUSRP21003) and the National Undergraduate Training Programs for Innovation (201310295046) |
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摘 要: | The luminous polypropylene fiber based on long afterglow luminescent material Sr2MgSi2O7:Eu^2+,Dy^3+was prepared by melt-spinning process. Micro-morphology, phase composition, crystal structure, spectral features and afterglow properties of the lu-minescent fiber were tested and analyzed. The results indicated that the fiber had independent superposition phase features of both Sr2MgSi2O7:Eu2+,Dy3+and polypropylene. The range of its excitation wavelength was located between 250-450 nm;therefore, the luminescent fiber could be excited by ultraviolet or visible light. It could emit blue light of 460 nm wavelength after excitation, which was caused by the 5d-4f transition of Eu^2+ions within the host lattice. The initial luminescent intensity was more than 0.8 cd/m^2, and afterglow life lasted 7 h. The afterglow decay was composed of rapid-decaying and slow-decaying processes, and the decay charac-teristics depended on the depth and concentration of trap level in the Sr2MgSi2O7:Eu^2+,Dy^3+.
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关 键 词: | 聚丙烯纤维 发光特性 晶体结构 长余辉发光材料 镝 欧盟 基础 夜光 |
收稿时间: | 7 January 2014 |
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