【摘要】：通過溶膠凝膠法制備Ca_2MgSi_2O_7∶Eu,Dy長余輝熒光材料,利用X射線衍射、熒光分光光度計(jì)和光色性能測試儀對熒光材料的晶型結(jié)構(gòu)、發(fā)光性能、余輝時(shí)間進(jìn)行了表征,同時(shí)以熒光材料和醇酸樹脂為原料制備建筑裝飾用長余輝熒光涂料并評(píng)價(jià)其應(yīng)用性能。通過研究發(fā)現(xiàn)熒光材料在紫光和可見光區(qū)具有寬譜激發(fā)與發(fā)射特性,激發(fā)峰值為389 nm,發(fā)射峰值為518 nm,其晶格結(jié)構(gòu)與標(biāo)準(zhǔn)卡相匹配,同時(shí)在Eu/Dy=1/2時(shí)獲得的熒光材料具有最優(yōu)的余輝時(shí)間,達(dá)到10 h;涂料的熒光強(qiáng)度和黏度與熒光材料質(zhì)量分?jǐn)?shù)成正比,其中熒光強(qiáng)度增幅逐漸降低,吸水率與質(zhì)量分?jǐn)?shù)成反比,有利于提高涂料的耐久性,所制備的Ca_2MgSi_2O_7∶Eu,Dy長余輝熒光材料及相應(yīng)的涂料具有一定的應(yīng)用價(jià)值。
[Abstract]:Ca_2MgSi_2O_7:Eu,Dy long afterglow fluorescent materials were prepared by sol-gel method. The crystal structure, luminescence properties and afterglow time of the fluorescent materials were characterized by X-ray diffraction, fluorescence spectrophotometer and photochromic performance tester. At the same time, fluorescent materials and alkyd resins were used as raw materials to prepare long afterglow fluorescent coatings for architectural decoration and their application properties were evaluated. It is found that the fluorescence material has wide spectrum excitation and emission characteristics in the purple and visible light regions. The excitation peak value is 389 nm, emission peak is 518 nm, and the lattice structure matches the standard card. The fluorescence intensity and viscosity of the coating are proportional to the mass fraction of the fluorescent material, in which the increase of the fluorescence intensity decreases gradually, and the water absorption is inversely proportional to the mass fraction. It is beneficial to improve the durability of the coating. The Ca_2MgSi_2O_7:Eu,Dy long afterglow fluorescent material and the corresponding coating have certain application value.
【作者單位】： 重慶工程職業(yè)技術(shù)學(xué)院藝術(shù)與設(shè)計(jì)學(xué)院;
【分類號(hào)】：TQ637

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