超细氢氧化镁粉体的制备研究

以氨水为沉淀剂与氯化镁反应,直接沉淀法制备氢氧化镁,研究反应温度、反应时间、Mg2+的初始浓度、原料配比对产品粒径与形貌的影响,产品使用粒度分析仪、XRD、红外与透射电镜表征,在最佳反应条件(温度35℃,时间30 min,Mg2+浓度1.0 mol/L,摩尔比1∶6)下,制备得到片状,粒径150 nm超细氢氧化镁粉体。

Research on manufacturing of super fine magnesium hydroxide

Using ammonia and magnesium chloride as raw material,super fine magnesium hydroxide was prepared by direct precipitation.The influences of temperature,reaction time,concentration of Mg2+ and mole ratio on the size and morphology of final product were investigated.The powder of magnesium hydroxide was characterized by laser granularity analyzer,XRD,FT-IR and SEM.Under the optimal reaction condition of temperature 35 ℃,time 30 min,concentration of Mg2+ 1.0 mol/L and mole ratio 1 ∶6,super fine magnesium hydroxide of plate form was manufactured,the size of which was approximately 150 nm.