Method for synthesizing titanate series electronic ceramic nano-crystalline materials
A synthesis method and technology of electronic ceramics, which is applied in the field of synthesis of titanate electronic ceramic nanocrystals, can solve the problems of high-end titanate products such as high price and unbalanced market supply, and achieve low cost, small number of crystals, and low energy consumption Effect
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[0034] Example 1
[0035] 1. Ingredients ball mill: accurately weigh 1001.695g BaCO respectively 3 And 498.305g TiO 2 .H 2 O, the high-energy ball mill is activated for 60 minutes, the ball-to-material ratio is 20:1, and the mill speed is 1500r / min. Then weigh the total amount of 2750g NaOH and 2250g KOH, add the above-mentioned ball mill filled with reactants to continue ball milling for 30 minutes, the mill speed is 800r / min, and finally all are moved into a 2L Teflon reaction vessel.
[0036] 2. Heating reaction: Seal the above Teflon reaction vessel and heat it in a sand bath at 180°C for a total heating time of 240 minutes, and then naturally cool to room temperature.
[0037] 3. Washing and drying: The reaction product collected in step 2 is washed twice with 90℃ deionized water, then transferred to a ball mill, added with deionized water to make a 2:1 slurry, ball milled again for 30 minutes, centrifuged, and vacuum After drying, barium titanate ceramic powder is obtained.
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Example Embodiment
[0042] Example 2
[0043] 1. Ingredients and ball mill: accurately weigh 590.520g SrCO respectively 3 And 391.600g TiO 2 .H 2 O, the high-energy ball mill is activated for 60 minutes, the ball-to-material ratio is 20:1, and the mill speed is 1600r / min. Then weigh the total amount of 2156g NaOH and 1764g KOH, add the above-mentioned ball mill filled with reactants to continue ball milling for 30 minutes, the mill speed is 800r / min, and finally all are transferred into a 2L Teflon reaction vessel.
[0044] 2. Heating reaction: The above Teflon reaction vessel is sealed, heated with a muffle furnace, heated to 170°C, kept for 2 hours, and then naturally cooled to room temperature.
[0045] 3. Washing and drying: mix the reaction product collected in step 2 into a slurry with 90°C deionized water, dissolve and age for 30 minutes, and centrifuge. After separation, the product repeats the above washing step twice. Vacuum drying, strontium titanate ceramic powder A is obtained.
[0046] SE...
Example Embodiment
[0047] Example 3
[0048] 1. Ingredients and ball mill: accurately weigh 590.520g SrCO respectively 3 And 319.200g commercial TiO 2 , High-energy ball mill is activated for 60 minutes, the ball-to-material ratio is 20:1, and the mill speed is 1600r / min. Then weigh the total amount of 2156g NaOH and 1764g KOH, add the above-mentioned ball mill filled with reactants to continue ball milling for 30 minutes, the mill speed is 800r / min, and finally all are moved into a 2L Teflon reaction vessel.
[0049] 2. Heating reaction: The above Teflon reaction vessel is sealed, heated with a muffle furnace, heated to 170°C, kept for 2 hours, and then naturally cooled to room temperature.
[0050] 3. Washing and drying: mix the reaction product collected in step 2 into a slurry with deionized water at 90°C, dissolve and age for 30 minutes, and centrifuge. After separation, the product repeats the above washing step twice. Vacuum drying, strontium titanate ceramic powder B is obtained.
[0051] Fig...
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