燃烧-发泡法制备不球磨SrAl_2O_4∶Eu^(2+),Dy^(3+)长余辉粉体材料  

Preparation of non-grinding SrAl_2O_4∶Eu^(2+),Dy^(3+) Long afterglow powdery material by combustion-frothing method

作　　者：李庚申[1] 孙家跃[1] 杜海燕[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037

出　　处：《化工新型材料》2005年第9期26-28,共3页New Chemical Materials

基　　金：国家自然科学基金(20476002);北京市自然科学基金(2042007)资助项目

摘　　要：向体系内添加分散剂、燃烧剂、发泡剂和矿化剂,于低温下进行燃烧-发泡反应,一步制备了不球磨的SrAl2O4∶Eu2+,Dy3+长余辉粉体材料。XRD分析表明,相纯度较高,晶粒尺寸为约35.2nm。FS结果显示,产品有371.8nm、398.6nm、410.0nm和420.4nm 4个主要激发峰,发射峰位于517.2nm,余辉时间达数小时。该方法具有反应时间短,合成温度低,产物发光亮度好,不用球磨就能得到粉体的优点。Dispersant, comburent, frother and mineralizer were added in the system successively, then it needed several minutes to combust at 600℃ directly, the non-grinding long afterglow powdery material SrAl2O4：Eu^2＋,Dy^3＋ was obtained. XRD analysis showed that the powders were nearly pure SrAl2O4 with very little other phases, the size of the grain was 35. 2nm FS results indicated that there were 4 excitation peaks marked 371.8nm,398. 6nm,410.0nm 和 420. 4nm, and the emission peak located at 517. 2nm, afterglow lasted up to several hours. Combustion-frothing method needs less time, low temperature and no grinding process, and the material has good luminescent property and low rigidity.

关 键 词：燃烧-发泡法 不球磨粉体材料 长余辉 SRAL2O4:EU^2+ DY^3+ SrAl2O4:Eu^2+ DY^3+ 粉体材料 燃烧剂 球磨 制备 反应时间 

分 类 号：TQ422[化学工程]