Preparation And Characterization Of ATO Nano-functional Conductive Materials

ATO (Antimony doped tin dioxide) ultrafine conductive powders, which have perfect properties such as electrical conductivity and transparence, are investigated widely in the field of antistatic coating and promising in extensive market applications. In this dissertation,SnCl₄·5H₂O and SbCl₃ were used as raw materials. ATO nano-functional powders have been prepared by chemical co-precipitation method. Diferent measurements such as TG-DTA, XRD and TEM were applied to characterize the properties of ATO powders. Based on the results of those measurements, the efects of antimony doping content, reaction temperature, pH value and heat treatment on particle size and conductive properties of ATO powders were systematically investigated. What's more, the mechanism of those efects was discussed and the best conditions were drawn from the results.In addition, conglomeration is an insurmountability difficulty for the nano-material, which restricts its industrialization. The paper discussed the effects of the ultrasonic distribution, times of washing and stuff adding for the particle size and conductive properties, and the best conditions were also obtained.In the mean time, the properties of our production sample are compared with the same kind of production in domenstic market, and the result demonstrates that the electrical conductivity of our production sample whose resistance is about ten ?, have the advantage over the same kind of production in domestic market. In addition, the diameter of the ATO powders which is only about 6nm is smaller than the same kind of production in domenstic market.Finally, the experimental preparation is magnified, and the intermediate experiment is basically successful.