Piezoelectric ceramic chip for electronic cigarette and method for manufacturing the same

Abstract

The application discloses a piezoelectric ceramic chip for electronic cigarettes and a preparation method thereof, and belongs to the technical field of piezoelectric ceramic chips and preparation methods. 1 / 2 Nb 1 / 2 )O3‑yPb(Ni 1 / 3 Nb 2 / 3 )O3‑0.01Pb(Sb 1 / 3 Nb 2 / 3 )O3+0.2wt%Li2CO3+zwt%Co2O3;Zr / Ti=1.02~1.06,x=0.01~0.02,y=0.01~0.02,z=0.1~0.3.The method comprises the following steps: mixing Pb3O4, ZrO2, TiO2, Yb2O3, Sb2O3, Co2O3, Nb2O5, NiO and Li2CO3, wet ball milling, drying, and sieving; pre-sintering the abrasive material; wet ball milling the pre-sintered abrasive material, drying, sieving, and obtaining ceramic powder; spray granulating and pressing the ceramic powder into a ceramic blank; sintering the ceramic blank to obtain a ceramic sheet; silverizing the ceramic sheet; and polarizing the silverized ceramic sheet.The piezoelectric ceramic material has excellent piezoelectric and electromechanical properties, low dielectric loss and high Curie temperature, and can meet the use requirements of the electronic cigarette chip.

Description

Technical Field

[0001] This invention relates to a piezoelectric ceramic chip and its preparation method, and more particularly to a piezoelectric ceramic chip for electronic cigarettes and its preparation method. Background Technology

[0002] Electronic cigarettes work by heating a resistance wire wound around a thin cotton filament to produce vapor. A drawback is that the cotton filament is also carbonized during the heating of the e-liquid, and this carbonized carbon can then enter the respiratory tract and lungs with the vapor, potentially causing respiratory and lung infections. Therefore, electronic cigarette manufacturers aim to achieve this through atomization. However, current atomization products have poor atomization effects and poor resistance to dry burning, severely impacting the quality of electronic cigarettes. The root cause is the low electromechanical conversion efficiency (d) of the piezoelectric materials used in atomization. 33 The temperature is ≥300pC / N, Kp≥0.5) and the Curie temperature is low (Tc≤330℃), which cannot meet the application requirements of electronic cigarettes. Summary of the Invention

[0003] In view of the above-mentioned defects in the prior art, the present invention aims to provide a piezoelectric ceramic chip for electronic cigarettes with high electromechanical conversion efficiency and Curie temperature. Another objective of the present invention is to provide a method for preparing the piezoelectric ceramic chip.

[0004] To achieve the above objectives, the piezoelectric ceramic chip for electronic cigarettes provided by this invention has the following composition formula: (1-xy)Pb(Zr,Ti)O3-xPb(Yb 1 / 2 Nb 1 / 2 )O3-yPb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb-0.01Pb(Sb) 1 / 3 Nb 2 / 3 )O3+0.2wt% Li2CO3+zwt%Co2O3; where Zr / Ti=1.02~1.06, x=0.01~0.02, y=0.01~0.02, z=0.1~0.3.

[0005] In the above technical solution, the preferred Zr / Ti ratio is 1.04, x = 0.015, y = 0.015, and z = 0.2.

[0006] The preparation method provided by this invention adopts the following technical solution:

[0007] 1) According to the proportions in the composition formula, Pb3O4, ZrO2, TiO2, Yb2O3, Sb2O3, Co2O3, Nb2O5, NiO, Li2CO3 and deionized water are mixed, ball-milled for 4-6 hours, dried, and passed through a 20-40 mesh sieve to obtain primary abrasive.

[0008] 2) Place the primary abrasive material in a sintering furnace, heat it to 950-1000℃ at a rate of 2.5-3℃ / min, and hold it at that temperature for 2 hours to obtain pre-burned material;

[0009] 3) After crushing the pre-fired material, add deionized water, ball mill for 3-5 hours, dry, and pass through a 40-mesh sieve to obtain ceramic powder;

[0010] 4) The ceramic powder is spray-granulated and pressed to a density of 5-5.1 g / cm³. 3 Flake-shaped porcelain blanks;

[0011] 5) Place the ceramic blank in a sintering furnace, heat it to 500°C at a rate of 0.3-0.5°C / min, then heat it to 1250-1300°C at a rate of 1.5-2°C / min and hold it for 2 hours to obtain ceramic slabs;

[0012] 6) Grind, clean, and dry the front and back sides of the ceramic tile;

[0013] 7) Print silver paste on the front and back of the ground ceramic sheet, then place it in a sintering furnace, heat it to 750℃ and hold it for 1.5 hours to obtain silver-coated ceramic sheets.

[0014] 8) The silver-coated ceramic sheet is placed in an environment with a temperature of 400℃ and an electric field strength of 600~800V / mm for a polarization time of 5~10min.

[0015] Compared with existing technologies, the piezoelectric ceramic chip d provided by this invention... 33 ≥400pC / N, ε 33 T With ε0≥1400, tanδ≤0.6%, Kp≥0.7, and Tc≥360℃, it fully meets the performance requirements of piezoelectric ceramics for electronic cigarettes. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments:

[0017] Example 1: The prepared component has the following formula: 0.96Pb(Zr,Ti)O3-0.015Pb(Yb) 1 / 2 Nb 1 / 2 O3

[0018] -0.015Pb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb(Sb) 1 / 3 Nb 2 / 3 A piezoelectric ceramic chip for electronic cigarettes is prepared by mixing O3 + 0.2wt% Li2CO3 + zwt% Co2O3; Zr / Ti = 1.06, z = 0.2. The steps are as follows:

[0019] 1) According to the proportions in the above-mentioned component formula, Pb3O4, ZrO2, TiO2, Yb2O3, Sb2O3, Co2O3, Nb2O5, NiO, Li2CO3 and deionized water are mixed, ball-milled for 4 hours, dried, and passed through a 20-mesh sieve to obtain primary abrasive; wherein, the weight ratio of zirconia balls, raw materials and deionized water is 2:1:1, and the ball mill speed is 360 r / min;

[0020] 2) Place the primary abrasive material in a sintering furnace, heat it to 980°C at a rate of 3°C / min, hold it at that temperature for 2 hours, and then cool it with the furnace to obtain the pre-burned material;

[0021] 3) After crushing the pre-fired material, add deionized water, ball mill for 4 hours, dry, and pass through a 40-mesh sieve to obtain ceramic powder; wherein, the weight ratio of zirconia balls, raw materials, and deionized water is 2:1:1, and the speed of the ball mill is 360 r / min.

[0022] 4) The ceramic powder is spray-granulated and pressed to a density of 5.05 g / cm³. 3 Flake-shaped porcelain blanks;

[0023] 5) Place the ceramic blank in a sintering furnace, heat it to 500°C at a rate of 0.5°C / min, then heat it to 1270°C at a rate of 1.5°C / min and hold it for 2 hours. Cool it in the furnace to obtain ceramic slabs.

[0024] 6) Grind, clean, and dry the front and back sides of the ceramic tile;

[0025] 7) Print silver paste on the front and back of the ground ceramic sheet, then place it in a sintering furnace, heat it to 750℃ and hold it for 1.5 hours to obtain silver-coated ceramic sheets.

[0026] 8) The silver-coated ceramic sheet was placed in an environment with a temperature of 400℃ and an electric field strength of 700V / mm for 10 minutes for polarization. After polarization, it was left to stand for 24 hours, and then the performance of the ceramic sheet was tested. The results are shown in Table 1.

[0027] Example 2, the prepared component has the following formula: 0.96Pb(Zr,Ti)O3-0.015Pb(Yb 1 / 2 Nb 1 / 2 O3

[0028] -0.015Pb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb(Sb) 1 / 3 Nb 2 / 3 A piezoelectric ceramic chip for electronic cigarettes is prepared using a mixture of O3 + 0.2 wt% Li2CO3 + z wt% Co2O3; Zr / Ti = 1.04, z = 0.3. The steps are as follows:

[0029] 1) According to the proportions in the above-mentioned component formula, Pb3O4, ZrO2, TiO2, Yb2O3, Sb2O3, Co2O3, Nb2O5, NiO, Li2CO3 and deionized water are mixed, ball-milled for 4 hours, dried, and passed through a 20-mesh sieve to obtain primary abrasive; wherein, the weight ratio of zirconia balls, raw materials and deionized water is 2.0:1:0.6, and the ball mill speed is 360 r / min;

[0030] 2) Place the primary abrasive material in a sintering furnace, heat it to 1000℃ at a rate of 2.5℃ / min, hold it at that temperature for 2 hours, and then cool it with the furnace to obtain the pre-burned material;

[0031] 3) After crushing the pre-fired material, add deionized water, ball mill for 5 hours, dry, and pass through a 40-mesh sieve to obtain ceramic powder; wherein, the weight ratio of zirconia balls, raw materials, and deionized water is 2.0:1:0.6, and the speed of the ball mill is 360 r / min;

[0032] 4) The ceramic powder is spray-granulated and pressed to a density of 5.1 g / cm³. 3 Flake-shaped porcelain blanks;

[0033] 5) Place the ceramic blank in a sintering furnace, heat it to 500°C at a rate of 0.4°C / min, then heat it to 1300°C at a rate of 2°C / min and hold it for 2 hours. Cool it with the furnace to obtain ceramic slabs.

[0034] 6) Grind, clean, and dry the front and back sides of the ceramic tile;

[0035] 7) Print silver paste on the front and back of the ground ceramic sheet, then place it in a sintering furnace, heat it to 750℃ and hold it for 1.5 hours to obtain silver-coated ceramic sheets.

[0036] 8) The silver-coated ceramic sheet was placed in an environment with a temperature of 400℃ and an electric field strength of 800V / mm for 5 minutes for polarization. After polarization, it was left to stand for 24 hours, and then the performance of the ceramic sheet was tested. The results are shown in Table 1.

[0037] Example 3, the prepared component has the following formula: 0.96Pb(Zr,Ti)O3-0.015Pb(Yb 1 / 2 Nb 1 / 2 O3

[0038] -0.015Pb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb(Sb) 1 / 3 Nb 2 / 3 A piezoelectric ceramic chip for electronic cigarettes is prepared by mixing O3 + 0.2wt% Li2CO3 + zwt% Co2O3; Zr / Ti = 1.02, z = 0.1. The steps are as follows:

[0039] 1) According to the proportions in the above component formula, Pb3O4, ZrO2, TiO2, Yb2O3, Sb2O3, Co2O3, Nb2O5, NiO, Li2CO3 and deionized water are mixed, ball-milled for 4 hours, dried, and passed through a 40-mesh sieve to obtain primary abrasive; wherein, the weight ratio of zirconia balls, raw materials and deionized water is 2:1:0.8, and the ball mill speed is 360 r / min;

[0040] 2) Place the primary abrasive material in a sintering furnace, heat it to 950°C at a rate of 2.5°C / min, hold it at that temperature for 2 hours, and then cool it with the furnace to obtain the pre-burned material;

[0041] 3) After crushing the pre-fired material, add deionized water, ball mill for 4 hours, dry, and pass through a 40-mesh sieve to obtain ceramic powder; wherein, the weight ratio of zirconia balls, raw materials, and deionized water is 2:1:0.8, and the speed of the ball mill is 360 r / min.

[0042] 4) The ceramic powder is spray-granulated and pressed to a density of 5 g / cm³. 3 Flake-shaped porcelain blanks;

[0043] 5) Place the ceramic blank in a sintering furnace, heat it to 500°C at a rate of 0.3°C / min, then heat it to 1250°C at a rate of 1.8°C / min and hold it for 2 hours. Cool it with the furnace to obtain ceramic slabs.

[0044] 6) Grind, clean, and dry the front and back sides of the ceramic tile;

[0045] 7) Print silver paste on the front and back of the ground ceramic sheet, then place it in a sintering furnace, heat it to 750℃ and hold it for 1.5 hours to obtain silver-coated ceramic sheets.

[0046] 8) The silver-coated ceramic sheet was placed in an environment with a temperature of 400℃ and an electric field strength of 600V / mm for 10 minutes for polarization. After polarization, it was left to stand for 24 hours, and then the performance of the ceramic sheet was tested. The results are shown in Table 1.

[0047] Example 4, the prepared component has the following formula: 0.96Pb(Zr,Ti)O3-0.015Pb(Yb 1 / 2 Nb 1 / 2 O3

[0048] -0.015Pb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb(Sb) 1 / 3 Nb 2 / 3 Piezoelectric ceramic chip for electronic cigarettes containing 0.2wt% Li2CO3 and zwt% Co2O3; Zr / Ti = 1.04, z = 0.2.

[0049] Each step is the same as in Example 1. After polarization, the ceramic sheet is left to stand for 24 hours, and then its performance is tested. The results are shown in Table 1.

[0050] Example 5, the prepared component has the following formula: 0.96Pb(Zr,Ti)O3-0.015Pb(Yb 1 / 2 Nb 1 / 2 O3

[0051] -0.015Pb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb(Sb) 1 / 3 Nb 2 / 3 Piezoelectric ceramic chip for electronic cigarettes containing 0.2wt% Li2CO3 and zwt% Co2O3; Zr / Ti = 1.04, z = 0.2.

[0052] Each step is the same as in Example 2. After polarization, the ceramic sheet is left to stand for 24 hours, and then the performance of the ceramic sheet is tested. The results are shown in Table 1.

[0053] Example 6, the prepared component has the following formula: 0.96Pb(Zr,Ti)O3-0.015Pb(Yb 1 / 2 Nb 1 / 2 O3

[0054] -0.015Pb(Ni 1 / 3 Nb 2 / 3 O3-0.01Pb(Sb) 1 / 3 Nb 2 / 3 Piezoelectric ceramic chip for electronic cigarettes containing 0.2wt% Li2CO3 and zwt% Co2O3; Zr / Ti = 1.04, z = 0.2.

[0055] Each step is the same as in Example 3. After polarization, the ceramic sheet is left to stand for 24 hours, and then its performance is tested. The results are shown in Table 1.

[0056] Table 1 Performance indicators of the piezoelectric ceramic material of the present invention

[0057]

[0058] As can be seen from Table 1, the piezoelectric ceramic material d prepared according to the formulation of this invention... 33 ≥400pC / N, ε 33 T / ε0≥1400, tanδ≤0.6%, Kp≥0.7, Tc≥360℃; Excellent piezoelectric and electromechanical properties, low dielectric loss, and high Curie temperature, fully meeting the requirements for use in electronic cigarette chips.

Claims

1. A piezoelectric ceramic chip for electronic cigarettes, characterized in that... The piezoelectric ceramic chip has a composition of: (1-x-y)Pb(Zr,Ti)O3-xPb(Yb 1 / 2 Nb 1 / 2 )O3-yPb(Ni 1 / 3 Nb 2 / 3 )O3-0.01Pb(Sb 1 / 3 Nb 2 / 3 )O3+0.2wt%Li2CO3+zwt%Co2O3)including Zr / Ti=1.02~1.06,x=0.01~0.02,y=0.01~0.02,3.1=0.0 2. The piezoelectric ceramic chip according to claim 1, characterized in that: Zr / Ti = 1.

04.

3. The piezoelectric ceramic chip according to claim 1, characterized in that: x＝0.015。 4. The piezoelectric ceramic chip according to claim 1, characterized in that: y＝0.015。 5. The piezoelectric ceramic chip according to claim 1, characterized in that: z＝0.2。 6. A method for preparing a piezoelectric ceramic chip for electronic cigarettes according to any one of claims 1 to 5, characterized in that... The specific steps are as follows: 1) According to the proportions in the composition formula, Pb3O4, ZrO2, TiO2, Yb2O3, Sb2O3, Co2O3, Nb2O5, NiO, Li2CO3 and deionized water are mixed, ball-milled for 4-6 hours, dried, and passed through a 20-40 mesh sieve to obtain primary abrasive. 2) Place the primary abrasive material in a sintering furnace, heat it to 950-1000℃ at a rate of 2.5-3℃ / min, and hold it at that temperature for 2 hours to obtain pre-burned material; 3) After crushing the pre-fired material, add deionized water, ball mill for 3-5 hours, dry, and pass through a 40-mesh sieve to obtain ceramic powder; 4) The ceramic powder is spray-granulated and pressed to a density of 5-5.1 g / cm³. 3 Flake-shaped porcelain blanks; 5) Place the ceramic blank in a sintering furnace, heat it to 500°C at a rate of 0.3-0.5°C / min, then heat it to 1250-1300°C at a rate of 1.5-2°C / min and hold it for 2 hours to obtain ceramic slabs; 6) Grind, clean, and dry the front and back sides of the ceramic tile; 7) Print silver paste on the front and back of the ground ceramic sheet, then place it in a sintering furnace, heat it to 750℃ and hold it for 1.5 hours to obtain silver-coated ceramic sheets. 8) The silver-coated ceramic sheet is placed in an environment with a temperature of 400℃ and an electric field strength of 600~800V / mm for a polarization time of 5~10min.

Images