湿法研磨制备纳米氧化锌颗粒的工艺条件优化

Study on process condition of nano zinc oxide by wet grinding method

本试验采用单因素试验设计方法,以氧化锌产品的粒径为评价指标,筛选湿法研磨制备纳米氧化锌的最佳工艺条件。经分析得到的最佳工艺条件为:悬浮液浓度为1%,研磨时间为1 h,转轴转速为2600 r/min,在此条件下制备的氧化锌颗粒平均粒径为121 nm。通过扫描电镜和XRD对产品进行形态表征和晶型分析,结果显示产品颗粒大小均一,晶型未发生改变。说明用湿法研磨的方法制备纳米氧化锌是可行的。

In this experiment,using the method of wet grinding,particle size of zinc oxide products as the evaluation index,the best process conditions were selected.The single factor experiment design method was applied to get the best technological conditions.The best condition showed as followed：the slurry concentration was 1%,milling time was 1 h,ro-tation speed was 2600 r/min.Under the condition of the preparation,the average particle size of zinc oxide particles was 121 nm.The product form and type analysis were characterized by scanning electron microscopy （SEM） and XRD and the results showed that the product particle size uniform,crystal structure was not changed.The results indicated that the preparation of nanometer ZnO by wet grinding method was feasible.