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本文分析了纳米超细粉体制备的化学沉淀法中溶液滴加法混合的缺点 :胶粒生成、团聚与陈化等在时间顺序上逐渐发生而严重不同一 ,成为粉体颗粒分散性好、粒径均匀的障碍 .本文将溶液滴加混合改为快速混合 ,发挥各因素同一性和优势 ,通过草酸共沉淀法制备成颗粒分散性好、粒径均匀、只有软团聚的纳米BaTiO3粉体 ,平均粒径达到 2 8nm
In this paper, we analyzed the shortcomings of the mixed solution dropping method in the chemical precipitation method for the preparation of nanometer ultrafine powders: the formation, agglomeration and aging of micelles gradually occur in a time sequence and are seriously different, and become a good dispersion of the powder particles, Diameter uniform obstacles.This paper will drop the solution mixed to rapid mixing, to play the sameness and advantages of various factors, by the oxalate coprecipitation prepared particles dispersed, uniform particle size, only soft agglomeration of nano-BaTiO3 powder, the average The particle size reaches 28 nm