La2O3-SnO2-Zn2SnO4 varistor-capacitor bifunctional ceramic material and preparation method thereof
A ceramic material and dual-function technology, applied in the field of ceramic materials, can solve the problems of complex process and high cost of pressure-sensitive-capacitance dual-function ceramics, and achieve good pressure-sensitive properties, easy to obtain or prepare, and simple process
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[0024] A La 2 o 3 -SnO 2 -Zn 2 SnO 4 A method for preparing a pressure-sensitive-capacitance dual-function ceramic material, comprising the following steps:
[0025] Step 1: Zn 2 SnO 4 Preparation of powder
[0026] The analytically pure chemical reagent SnO 2 Mix with ZnO in a molar ratio of 1:2, and put it into a nylon ball mill tank, then add alcohol and ball mill for 12 hours at a speed of 120 rpm to obtain a slurry;
[0027] After the ball milled slurry is dried at 21°C~150°C, it is sent into a powder tablet press, and pressed into a disc with a diameter of 25-30mm under the condition of 80-120MPa. Put it into the muffle furnace, calcined at 1000°C for 2 hours, then cool it down to 20°C naturally, and crush the calcined disc to get Zn 2 SnO 4 Powder, spare;
[0028] Step 2: Weigh the analytically pure chemical reagent La respectively 2 o 3 , SnO 2 and the Zn prepared in step one 2 SnO 4 Dry-mix the powder, then put it into a nylon ball mill tank, and add a...
Embodiment 1
[0034] A La 2 o 3 -SnO 2 -Zn 2 SnO 4 Varistor-capacitance bifunctional ceramic material, the ceramic material is made of La 2 o 3 Powder, Zn 2 SnO 4 Powder and SnO 2 The powder is mixed and pressed, and sintered, and the molar ratio of each component is La 2 o 3 : SnO 2 : Zn 2 SnO 4 It is 0.1:85:15.
[0035] A La 2 o 3 -SnO 2 -Zn 2 SnO 4 Varistor-capacitance dual-function ceramic material, the preparation method of which is as follows:
[0036] Step 1: Zn 2 SnO 4 Preparation of powder
[0037] The analytically pure chemical reagent SnO 2 Mix with ZnO in a molar ratio of 1:2, and put it into a nylon ball mill tank, then add alcohol and ball mill for 12 hours at a speed of 120 rpm to obtain a slurry;
[0038] After the ball milled slurry is dried at 21°C~150°C, it is sent into a powder tablet press, and pressed into a disc with a diameter of 25mm under the condition of 80MPa, and the pressed disc is sent into a muffle In the furnace, calcined at 1000°C fo...
Embodiment 2
[0043] A La 2 o 3 -SnO 2 -Zn 2 SnO 4 Varistor-capacitance bifunctional ceramic material, the ceramic material is made of La 2 o 3 Powder, Zn 2 SnO 4 Powder and SnO 2 The powder is mixed and pressed, and sintered, and the molar ratio of each component is La 2 o 3 : SnO 2 : Zn 2 SnO 4 It is 0.4:85:15.
[0044] A La 2 o 3 -SnO 2 -Zn 2 SnO 4 Varistor-capacitance dual-function ceramic material, the preparation method of which is as follows:
[0045] Step 1: Zn 2 SnO 4 Preparation of powder
[0046] The analytically pure chemical reagent SnO 2 Mix with ZnO in a molar ratio of 1:2, and put it into a nylon ball mill tank, then add alcohol and ball mill for 12 hours at a speed of 120 rpm to obtain a slurry;
[0047] After the milled slurry is dried at 21°C~150°C, it is sent into a powder tablet press, and pressed into a disc with a diameter of 30mm under the condition of 100MPa, and then the prepared disc is sent to the horse In the furnace, calcined at 1000°C f...
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