Preparation method of a wide dielectric temperature stable fine-grained barium zirconate titanate ceramic dielectric material
A technology of crystalline barium zirconate titanate and ceramic medium, which is applied in the field of preparation of wide dielectric temperature stability fine-grained barium zirconate titanate ceramic medium material, can solve the problem of large average particle size of ceramics, many components of ceramic materials, zirconium titanium Barium oxide-based ceramics have problems such as narrow application range, and achieve the effect of environmental friendliness and controllable preparation process.
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Embodiment 1
[0035] Example 1 Preparation of fine-grained barium zirconate titanate ceramic dielectric material with wide dielectric temperature stability:
[0036] Step 1: Take 5.2 mL of TiCl with a concentration of 2.178 mol / L according to the stoichiometric ratio in an ice-water bath at 15°C 4 Solution, after being diluted with 56.6ml of distilled water cooled after boiling, join in the NaOH solution with a drop rate of 0.6ml / min, then add 40ml of 0.0257mol / L Zr(NO 3 ) 4 ·5H 2 O solution was added to the above solution at a rate of 0.4ml / min, and stirred for 30min after the dropwise addition, and then 51ml of 0.311mol / L Ba(CH 3 COO) 2 The solution was slowly added dropwise into the above system at a rate of 0.4ml / min, and continued to stir for 30min after the dropwise addition was completed.
[0037] Step 2: Heat the above system at a heating rate of 3°C / min to 60-80°C for 4 hours, age the reaction solution for 24 hours and filter it with suction, wash the precipitate with boiled di...
Embodiment 2
[0042] Example 2 Preparation of fine-grained barium zirconate titanate ceramic dielectric material with wide dielectric temperature stability:
[0043] Step 1: Take 4.8 mL of TiCl with a concentration of 2.178 mol / L according to the stoichiometric ratio in an ice-water bath at 18°C 4 Solution, after being diluted with 52.3ml of distilled water cooled after boiling, join in the NaOH solution with a drop rate of 0.4ml / min, then add 45.2ml of 0.0257mol / L Zr(NO 3 ) 4 ·5H 2 O solution was added to the above solution at a rate of 0.4ml / min, and stirred for 30min after the addition was completed, then 40.3ml of 0.311mol / L Ba(CH 3 COO) 2 The solution was slowly added dropwise to the above system at a rate of 0.2ml / min, and continued to stir for 25min after the dropwise addition was completed.
[0044] Step 2: Heat the above system to 60°C at a heating rate of 1°C / min to react for 1h, age the reaction solution for 12h, then filter it with suction, wash the precipitate with boiled d...
Embodiment 3
[0048] Example 3 Preparation of fine-grained barium zirconate titanate ceramic dielectric material with wide dielectric temperature stability:
[0049] Step 1: Take 5.0 mL of TiCl with a concentration of 2.178 mol / L according to the stoichiometric ratio in an ice-water bath at 18°C 4 Solution, after being diluted with 54.5ml of distilled water cooled after boiling, join in the NaOH solution with the drop rate of 0.2ml / min, then add 56.5ml of 0.0257mol / L Zr(NO 3 ) 4 ·5H 2 O solution was added to the above solution at a rate of 0.2ml / min, and stirred for 30min after the addition was completed, then 38.5ml of 0.311mol / L Ba(CH 3 COO) 2 The solution was slowly added dropwise to the above system at a rate of 0.3ml / min, and continued stirring for 20 minutes after the dropwise addition was completed.
[0050] Step 2: Heat the above system at a heating rate of 2°C / min to 70°C and react for 2.5 hours, age the reaction liquid for 18 hours and then filter it with suction, wash the pre...
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