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采用超声波-沉淀法制备PDP小颗粒蓝色荧光粉BaMgAl10O17:0.1Eu,实验最佳条件为:前驱液PH=8～9,热预温度为650℃,灼烧温度1370℃,超声波作用时间为2h。产物经粉晶衍射仪检测为BaMgAl10O17,其厚度约为80nm的六方晶颗粒,平均粒度为360nm的小颗粒蓝色荧光粉,相对发光强度有明显提高。实验通过在制备样品的分散介质中加适量硝酸来调节样品表面的ζ电位,其样品原来ζ电位的负值可调控为正值,可以改善蓝粉在后续PDP涂屏工艺浆料中的流变行为,有利于提高PDP制屏的质量。
The experimental results show that the precursor of PH = 8 ~ 9, the preheating temperature is 650 ℃, the burning temperature is 1370 ℃, and the ultrasonic action time is 2h . The product was detected by the powder diffraction of BaMgAl10O17, the thickness of about 80nm hexagonal particles, the average particle size of the small blue particles of 360nm phosphors, the relative luminous intensity was significantly improved. Experiments by adjusting the sample surface ζ potential by adding appropriate amount of nitric acid in the preparation of the sample dispersion medium, the original value of the sample zeta potential can be adjusted to a positive value, can improve the blue powder in the subsequent PDP coating process flow in the slurry Behavior, help to improve the quality of PDP screen.