论文部分内容阅读
复合导电粉具有良好的导电性、稳定性和分散性,广泛用于防静电、电磁屏蔽等诸多领域。采用共沉淀法在硫酸钙晶须表面包覆一层ATO来制备ATO/CaSO4复合导电粉,并研究制备条件对导电粉电阻率的影响。结果表明,最佳制备条件为:Sb/Sn摩尔比1:10,硫酸钙晶须浓度7.5%,水解温度35℃,水解pH6,煅烧温度650℃,煅烧时间2h。
Composite conductive powder has good conductivity, stability and dispersion, widely used in anti-static, electromagnetic shielding and many other fields. The ATO / CaSO4 composite conductive powder was prepared by coprecipitation method by coating a layer of ATO on the surface of calcium sulfate whiskers. The influence of preparation conditions on the resistivity of conductive powder was also studied. The results show that the optimal preparation conditions are as follows: Sb / Sn molar ratio 1:10, calcium sulfate whisker concentration 7.5%, hydrolysis temperature 35 ℃, hydrolysis pH6, calcination temperature 650 ℃, calcination time 2h.