The preparation of ultrafine PbWO4 by soft template synthesis requires strict experimental conditions to ensure an important way to obtain ultrafine and uniform lead tungstate, which is superior to other physical and chemical preparation methods. Ultrafine PbWO4 was successfully synthesized in the W/O microemulsion zone of S.60 water system using surfactant as soft template. The ultra-fine PbWO4 prepared by the soft template with S60 as the dispersant has a uniform particle size distribution, and the orthogonal experiment method is used to create the best experimental conditions: S60 is used as the surfactant, the concentration of the dispersant is 30 times diluted, and the pH value of the solution is 9 , the reactant concentration is 0,01MOL/L, the stirring rate is 1300rpm, the Pb(Ach solution is slowly added dropwise to the Na2WO4 solution, and the ultrafine target product is obtained, which is used as a filler for radiation protection.
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