Research On Preparing Of Antimony Trioxide Nano-particle By Using Ball Milling Method

The study of preparation of nanometer antimony trioxide powder, by using Ball Milling Method was inspected.The resulted antimony trioxide nano-powders were characterized and analyzed by X-ray diffraction (XRD),transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR).The mechanism and the optimal process conditions were examined by changing process parameters such as surface active agent,milling time and milling rate in the preparation.It was found that surface active agent played an important role in the purity and dispersion of the ball milled products. When the surfactant was PAAS, the product could be prepared from cohering effectively,however,the content of Sb2O3in product was only92%above,which had broad distribution of particle size (5-60nm) and the average particle size was30nm. When the surfactants of PAAS and stearic acid were used,the content of Sb2O3and the dispersion of nano-powders were the best.The single factor experiment was conducted to investigate the effect of milling time and milling rate on nanometer antimony trioxide powders.With the increase of milling time,the content of Sb2O3in product was more and more high.When milling time was40h, the ball milled product was pure Sb2O3powder.when milling time was longer, the nanoparticles would aggregate.The milling rate had a direct impact on the content and dispersion of antimony trioxide powder products.When the milling rate was300r/min, the ball milled product was pure Sb2O3powder.when the milling rate increased, the nanoparticles would also aggregate.It can be concluded that the produced nanoparticles are uniformly dispersed,and the purity of Sb2O3is99%above, which has a narrow distribution of particle size (10-20nm) and the average particle size of15nm,under the optimal process parameters of0.2g PAAS and0.15g stearic acid,milling time of40h,and milling rate of300r/min.