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《Journal of Chongqing University(Natural Science Edition)》 2002-07
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Fabrication of Long After-glow Phosphorescent Material and Its Characteristics of Reflective Spectra

ZHANG Yu -qi 1, CHEN Zhong -lin 2, ZHU Wei 3 (1. College of Material Science and Engineering, Chongqing University, Chongqing 400045,China;2.Faculty of Architecture and Urban Planning, Chongqing University, Chongqing 400045,China; 3.College of  
Two methods, which are dry and wet method, nowadays to fabricate long after-glow phosphorescent materials are investigated. Dry method mixes and mills the raw materials thoroughly as per proportion and then sinters the mixture at 1 000-1 600 ℃ for 2-4 hours under a reducing and inert atmosphere, while wet method utilizes the combustion reaction of self-propagating high-temperature synthesis(SHS) of metal nitrates and organic reductant to yield the resultant at one step. The properties and their difference of the samples obtained from two methods are discussed and compared together. UV-VIS reflective spectrophotometer is applied to determine and analyze the characteristics of the samples before and after their absorption of light. The result shows that the properties of the samples fabricated from dry and wet technique are similar except their apparent density, and UV-VIS reflective spectrum states clearly the spectral characteristics of long after-glow phosphorescent materials.
【CateGory Index】: TB34
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