热处理对掺锑二氧化锡纳米导电粉粒度和性能的影响

Influences of Heat-Treatment on the Particle Size and Properties of Conductive Nanometer-Sized Antimony-Doped Tin Dioxide Powders

ＳｎＯ２超细粉用作透明导电膜和导电涂料具有广阔的应用前景．以ＳｎＣｌ４·５Ｈ２Ｏ和ＳｂＣｌ３为原料,在掺杂浓度Ｓｂ２Ｏ３∶ＳｎＯ２＝９∶１００(重量比)的条件下,采用共沉淀法制得了纳米级的ＳｎＯ２超细粉．运用差示扫描量热法－失重分析(ＤＳＣ－ＴＧ)、Ｘ射线衍射(ＸＲＤ)、透射电镜(ＴＥＭ)和紫外可见光光谱分析(ＵＶ)等观测手段对微粉末进行了表征,比较系统地研究了热处理工艺(温度、时间)对粉末颗粒度和电阻的影响规律,探讨了掺锑ＳｎＯ２导电粉的显色特性．

Tin dioxide ultrafine powders used as transparent conductive films and conductive paints have extensive application prospects. Antimony-doped tin dioxide ultrafine powders in size of nanometers were prepared by chemical coprecipitation by using SnCl(4)(.)5H(2)O and SbCl3 as precursors with the doped concentration of Sb2O3:SnO2 =9:100(weight rate). The characteristics of the powders were investigated by differential scanning calorimetry and thermogravimetric analysis (DSC-TG), X-ray diffraction (XRD), transmission electron microscope (TEM) and ultraviolet spectrum analysis (UV). The influences of heating temperature and heating time on the particle size and powders resistance were researched. The reason of the powders emerging light blue was also derived.