Method for preparing conductive powder by recoating aluminum-doped nano zinc oxide with aluminum
An aluminum-doped zinc oxide, conductive powder technology, applied in cable/conductor manufacturing, zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problems of high density and easy deposition, powder toxicity, serious particle agglomeration, etc. Achieving the effects of wide source of raw materials, alleviation of agglomeration and simple preparation process
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[0025] Example 1: (1) Add 1.2 kg of sodium lauryl sulfate to 100.0 kg of deionized water, stir and heat to 80°C, then add 518.4 g of aluminum sulfate and 28.8 kg of zinc sulfate to form a mixed solution, and then add to the mixed solution Add 1.0m / L sodium carbonate solution dropwise to it, control the pH of the system to 7 after the addition is complete, form a colloidal precipitation precursor, continue to stir and reflux for 2h, then wash, dry, and calcinate the colloidal precipitation precursor at 500℃ 2h to obtain aluminum-doped zinc oxide powder with an average particle size of 60nm;
[0026] (2) Add the obtained 14.6kg aluminum-doped zinc oxide powder to 146.0kg of deionized water to obtain aluminum-doped zinc oxide slurry with a solid content of 10%. The system is heated to 85°C, and the aluminum-doped zinc oxide is oxidized while stirring. Add 29.2L of 0.1m / L aluminum sulfate solution and 0.5m / L sodium carbonate solution in parallel to the zinc slurry to control the pH o...
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[0028] Example 2: (1) Add 2.0 kg of sodium dodecylbenzene sulfonate to 100.0 kg of deionized water, stir and heat to 45°C, then add 396.1 g of aluminum sulfate and 26.4 kg of zinc chloride to form a mixed solution, and then Add 3.0m / L ammonium bicarbonate solution dropwise to the mixed solution. After the addition, control the pH of the system to 9 to form a colloidal precipitation precursor. Continue stirring and reflux for 10 hours, and then wash, dry, and dry the colloidal precipitation precursor. Calcined at 300℃ for 2h to obtain aluminum-doped zinc oxide powder with an average particle size of 20nm;
[0029] (2) Add the obtained 15.8kg aluminum-doped zinc oxide powder to 79.0kg of deionized water to obtain an aluminum-doped zinc oxide slurry with a solid content of 20%. The system is heated to 50°C, and the aluminum-doped zinc oxide is oxidized while stirring. Add 2.96L 1.0m / L aluminum sulfate solution and 2.0m / L ammonium bicarbonate solution in parallel to the zinc slurry t...
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[0031] Example 3: (1) Add 0.9kg of potassium higher fatty acid to 100.0kg of deionized water, stir and heat to 95°C, then add 519.2g of aluminum acetate and 25.9kg of zinc nitrate to form a mixed solution, and then add dropwise to the mixed solution 4.0m / L ammonia solution, control the pH of the system to 6 after the dropwise addition, form a colloidal precipitation precursor, continue to stir and reflux for 1 hour, then wash, dry, and calcinate the colloidal precipitation precursor at 600°C for 2 hours to obtain an average particle size Aluminum-doped zinc oxide powder with a diameter of 100nm;
[0032] (2) Add the obtained 7.2kg aluminum-doped zinc oxide powder to 48kg of deionized water to obtain an aluminum-doped zinc oxide slurry with a solid content of 15%. The system is heated to 95℃, and the aluminum-doped zinc oxide is added while stirring. Add 2.88L 0.5m / L aluminum sulfate solution and 2.0m / L ammonia solution to the slurry in parallel to control the pH of the system to ...
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