CN108863405A - A kind of ZnO voltage-sensitive ceramic additive and its preparation method and application - Google Patents
A kind of ZnO voltage-sensitive ceramic additive and its preparation method and application Download PDFInfo
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Abstract
The invention belongs to pressure sensitive field, a kind of ZnO voltage-sensitive ceramic additive and its preparation method and application is provided, the preparation method includes the following steps：1）By ZnO and Sb2O3Using solvent as medium ball milling, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be 1 ~ 14：1；2）By step 1）Obtained slurry is dried and is calcined to get the ZnO voltage-sensitive ceramic additive.The present invention furthermore provides the ZnO voltage-sensitive ceramic additive and its application.The ZnO voltage-sensitive ceramic additive is added in the raw material for preparing ZnO voltage-sensitive ceramic, ZnO crystal grain is promoted to grow up, reduce pressure sensitive voltage, keep varistor low-temperature sintering, and the nonlinear factor of voltage-sensitive ceramic can be increased, ZnO voltage-sensitive ceramic sintering temperature is reduced to 850~900 DEG C, and the nonlinear factor α value of material is up to 91, and pressure-sensitive field strength is down to 500 ~ 760V/mm.
Description
Technical field
The invention belongs to pressure sensitive field, it is related to a kind of ZnO voltage-sensitive ceramic additive and its preparation method and application, tool
Body, which is related to one kind, can reduce the ZnO pressure sensitive voltage of varistor and the voltage-sensitive ceramic additive of sintering temperature and preparation method thereof
And application.
Background technique
Piezoresistor is a kind of nonlinear wind vibration electronics of resistance value sensitive variation with the increase of applied voltage
Ceramic component, the absorption of the electrostatic protection and surge current that are widely used in the overvoltage protection and electronic circuit of electric system
Deng being widely used.Piezoresistive material system is numerous, such as SiC, TiO2、SnO2With ZnO voltage-sensitive ceramic etc..Compared to other pressures
Quick resistance material, ZnO semiconductive ceramic have better pressure-sensitive character：Its nonlinear factor is high, the response to abnormal voltage
Speed is fast, and the leakage current under normal operating conditions is small, is affected by temperature small and cheap.It is pressure-sensitive that ZnO was started from 1967
Resistive technologies so far, have been pass by more than 50 years, and as from high-voltage electric power system to the protection of Low-voltage Electronic circuit, ZnO is pressure-sensitive
Resistance almost covers all power equipments and electronic device.
With the development of mechanics of communication and microelectric technique, the volume of electronic equipment is gradually to miniaturization, micromation direction
Development, the integration degree of electronic equipment are also higher and higher.This driving voltage value for resulting in electronic component in circuit gradually drops
Low, the pressure voltage of electronic component also declines therewith, these can all cause by electromagnetic pulse interference, operation over-voltage and static electricity on human body
The probability that electric discharge etc. causes electronic circuit to occur damaging greatly increases.For this purpose, proposing low pressure and small-power to pressure sensitive
The requirement of change.
At present：Zn varistor low pressure approach mainly has：(1) high pressure formula is utilized, the thickness of voltage-sensitive ceramic piece is reduced.
(2) average grain size for increasing ZnO by seed-grain method or is added crystal grain growth regulator and improves sintering temperature, extends heat preservation
The methods of time is realized.Approach (1) is higher to preparation process and its equipment requirement, involves great expense.And approach (2), in seed-grain method,
Time-consuming for the preparation and screening of seed crystal, complex process, and material homogeneity is poor.Improve sintering temperature, extension soaking time can be led
A large amount of volatilizations of zinc oxide and its additive are caused to influence the performances such as its nonlinear factor.In contrast, addition promotes grain growth
Additive be the most simple most efficient method of current low pressureization.However, under normal circumstances, the oxide for promoting crystal grain to grow up adds
Add agent that can reduce to varying degrees the nonlinear factor of varistor or increase its sintering temperature.
Therefore, nonlinear factor will not be reduced by preparing one kind, or even increase nonlinear factor, while sintering temperature is also lower
Promotion grain growth agent, for ZnO varistor low pressureization development be significantly.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of ZnO voltage-sensitive ceramic additives
And its preparation method and application, the preparation process of the additive is simple, and chemical property is stablized, the ZnO voltage-sensitive ceramic additive
It is added in the raw material for preparing ZnO voltage-sensitive ceramic, ZnO crystal grain is promoted to grow up, reduce pressure sensitive voltage, varistor low temperature is kept to burn
Knot, and the nonlinear factor of voltage-sensitive ceramic can be increased, ZnO voltage-sensitive ceramic sintering temperature is reduced to 850~900 DEG C, material
Nonlinear factor α value is up to 91, and pressure-sensitive field strength is down to 500~760V/mm.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of ZnO voltage-sensitive ceramic additive
Preparation method, include the following steps：
1) by ZnO and Sb2O3Using solvent as medium ball milling, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be 1~14：
1, such as 1~6：1 or 6~14：1；
2) slurry for obtaining step 1) is dried and is calcined to get the ZnO voltage-sensitive ceramic additive.
Preferably, in step 1), the solvent is selected from one of dehydrated alcohol and deionized water or a variety of.
Preferably, in step 1), Ball-milling Time is 1~5h, such as 1~3h, 3~4h or 4~5h.
Preferably, in step 2), drying temperature is 80~120 DEG C.
It preferably, further include at least one in following technical characteristic in step 2)：
1) drying time is 5~15h；
2) calcination temperature is 700~900 DEG C, such as 700~750 DEG C, 750~800 DEG C, 800~850 DEG C or 850~900
℃；
3) calcination time is 5~12h, such as 5~10h or 10~12h.
It preferably, further include step 3)：The ZnO voltage-sensitive ceramic additive that step 2) obtains is ground up, sieved.
It is highly preferred that the mesh number of sieve is 60~100 mesh.
Second aspect of the present invention provides a kind of ZnO voltage-sensitive ceramic additive, using preparation method described in any of the above embodiments
It obtains.
Third aspect present invention provides the purposes of above-mentioned ZnO voltage-sensitive ceramic additive, for being added to the preparation pressure-sensitive pottery of ZnO
In the raw material of porcelain.
Preferably, the additive amount of ZnO voltage-sensitive ceramic additive be 0.1~0.6at%, such as 0.1~0.2at%, 0.2~
0.3at%, 0.3~0.4at%, 0.4~0.5at% or 0.5~0.6at%.
The invention discloses a kind of ZnO voltage-sensitive ceramic additive and its preparation method and application, the ZnO voltage-sensitive ceramic adds
Adding the chemical element group of agent becomes Zn, Sb, O, and the preparation method includes the following steps：1) by ZnO and Sb2O3It is to be situated between with solvent
Matter ball milling obtains slurry, wherein ZnO and Sb2O3Molar ratio be 1~14：1；2) slurry for obtaining step 1) carry out drying and
Calcining is to get the ZnO voltage-sensitive ceramic additive.The present invention furthermore provides the ZnO voltage-sensitive ceramic additive and its application.
The ZnO voltage-sensitive ceramic additive is added in the raw material for preparing ZnO voltage-sensitive ceramic, is promoted ZnO crystal grain to grow up, is reduced pressure-sensitive electricity
Pressure keeps varistor low-temperature sintering, and can increase the nonlinear factor of voltage-sensitive ceramic, ZnO voltage-sensitive ceramic sintering temperature drop
Down to 850~900 DEG C, the nonlinear factor α value of material is up to 91, and pressure-sensitive field strength is down to 500~760V/mm.
Detailed description of the invention
Fig. 1 is ZnO voltage-sensitive ceramic additive with molar ratio ZnO：Sb2O3=14：The 1 XRD analysis figure being sintered at 750 DEG C
Spectrum.
Fig. 2 is ZnO voltage-sensitive ceramic additive with molar ratio ZnO：Sb2O3=14：The 1 XRD analysis figure being sintered at 850 DEG C
Spectrum.
Specific embodiment
The present invention is further explained combined with specific embodiments below, it should be appreciated that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be clear that in the following example not specifically dated process equipment or device be all made of conventional equipment in the art or
Device；All pressure values and range all refer to relative pressure, and the raw material used is also conventional use of raw material in the art.
In addition, it should also be understood that, one or more method and step mentioned in the present invention does not repel before and after the combination step
It can also be inserted into other methods step there may also be other methods step or between these explicitly mentioned steps, unless separately
It is described；It should also be understood that the combination connection relationship between one or more equipment/device mentioned in the present invention is not repelled
The two equipment/devices specifically mentioned before and after the unit equipment/device there may also be other equipment/device or at these it
Between can also be inserted into other equipment/device, unless otherwise indicated.Moreover, unless otherwise indicated, the number of various method steps is only
Identify the convenient tool of various method steps, rather than for the arrangement order of limitation various method steps or limits the enforceable model of the present invention
It encloses, relativeness is altered or modified, and without material changes in technical content, when being also considered as, the present invention is enforceable
Scope.
Embodiment 1 ZnO and Sb2O3Molar ratio be 14：1
1) by ZnO and Sb2O3Using dehydrated alcohol as medium ball milling 4h, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be
14：1；
2) grinding is put into calcining in crucible after drying the slurry that step 1) obtains, wherein drying temperature is 80 DEG C, is dried
Time is 8h, and calcination temperature is 750 DEG C, calcination time 10h；
3) calcined powder is ground, is sieved by 60 mesh sieve to get the ZnO voltage-sensitive ceramic additive.
To (97at%-x) ZnO- (1at%) Bi2O3(0.5at%) Sb2O3(0.5at%) MnO2(0.5at%)
Co2O3(0.5at%) Cr2O3Be separately added into the initial powder of system based varistor x (x=0at%, 0.1at%,
0.3at%, 0.5at%) amount ZnO voltage-sensitive ceramic additive.Raw material is weighed by the stoichiometric ratio in the above ingredient general formula：
ZnO、Bi2O3、Sb2O3、MnO2、Co2O3、Cr2O3And additive；By weighed material powder using dehydrated alcohol as medium ball milling 4h,
After slurry obtained by ball milling keeps the temperature 8h drying powder at 80 DEG C, powder is fully ground, the polyethylene of its weight 10wt% is added dropwise
Alcohol (PVA) is granulated.Then by the compression moulding under the opposite pressure of 100MPa of the powder of acquisition, diameter 10mm, thickness are obtained
The disk of 1.5mm；Potsherd is sufficiently arranged after gluing, in air respectively at 850,880,900,920 DEG C of sintering 2h, is obtained
ZBSMCC series pressure-sensitive ceramic.
ZBSMCC series pressure-sensitive ceramic fine grinding processing to acquisition, by silver electrode after ultrasonic cleaning, tests its electric property.Its
In, the performance for the sample that sintering temperature obtains when being 900 DEG C is best, is shown in Table 1.
The electric property of 1 embodiment of table, 1 sample
Fig. 1 is ZnO voltage-sensitive ceramic additive with ZnO and Sb2O3Molar ratio be 14：1 XRD analysis being sintered at 750 DEG C
Map.The additive is by ZnO, ZnSb as seen from Figure 12+5O6、Zn2.33Sb0.67O4And Zn7Sb2O12Four kinds of phase compositions.By table
One can be seen that the addition of the additive can reduce the pressure-sensitive field strength of ZBSMCC system varistor, and with the increasing of additive amount
Add, pressure-sensitive field strength is gradually reduced, while when adding 0.3at%ZnO voltage-sensitive ceramic additive, nonlinear factor reaches
77, sintering temperature is down to 900 DEG C.
Embodiment 2 ZnO and Sb2O3Molar ratio be 14：1
1) by ZnO and Sb2O3Using dehydrated alcohol as medium ball milling 4h, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be
14：1；
2) it will be ground after the drying of slurry that step 1) obtains, then powder is pressed into a sheet is put into crucible and calcine,
In, drying temperature is 120 DEG C, drying time 8h, and calcination temperature is 850 DEG C, calcination time 12h；
3) calcined powder is ground, is sieved by 60 mesh sieve to get the ZnO voltage-sensitive ceramic additive.
To (97.5at%-x) ZnO- (1at%) Bi2O3(0.5at%) Sb2O3(0.5at%) MnO2(0.5at%)
Co2O3X (x=0at%, 0.2at%, 0.4at%, 0.6at%) amount is separately added into the initial powder of system based varistor
ZnO voltage-sensitive ceramic additive.Raw material is weighed by the stoichiometric ratio in the above ingredient general formula：ZnO,Bi2O3、Sb2O3、MnO2、
Co2O3And additive；By weighed material powder using deionized water as medium ball milling 4h, slurry obtained by ball milling is kept the temperature at 120 DEG C
After 8h dries powder, powder is fully ground, the polyvinyl alcohol (PVA) that its weight 10wt% is added dropwise is granulated.Then by acquisition
Powder compression moulding under the opposite pressure of 100MPa obtains diameter 10mm, the disk of thickness 1.5mm；Potsherd is sufficiently arranged
After viscous, in air respectively at 830,850,880,900 DEG C of sintering 2h, ZBSMC series pressure-sensitive ceramic is obtained.
ZBSMC series pressure-sensitive ceramic fine grinding processing to acquisition, by silver electrode after ultrasonic cleaning, tests its electric property.Its
In, the performance for the sample that sintering temperature obtains when being 880 DEG C is best, is shown in Table 2.
The electric property of 2 embodiment of table, 2 sample
Fig. 2 is ZnO voltage-sensitive ceramic additive with ZnO and Sb2O3Molar ratio be 14：1 XRD analysis being sintered at 850 DEG C
Map.The additive and Zn as seen from Figure 27Sb2O12The diffraction maximum of phase meets preferably.ZBSMC system presses as can be seen from Table 2
Quick ceramics its pressure-sensitive field strength after adding additive reduces, pressure-sensitive when adding 0.4at%ZnO voltage-sensitive ceramic additive
Performance is best, nonlinear factor 91, leakage current 0, and sintering temperature is lower, is 880 DEG C.
Embodiment 3 ZnO and Sb2O3Molar ratio be 6：1
1) by ZnO and Sb2O3Using dehydrated alcohol as medium ball milling 4h, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be
6：1；
2) grinding is put into calcining in crucible after drying the slurry that step 1) obtains, wherein drying temperature is 80 DEG C, is dried
Time is 8h, and calcination temperature is 700 DEG C, calcination time 10h；
3) calcined powder is ground, is sieved by 60 mesh sieve to get the ZnO voltage-sensitive ceramic additive, master
It will be by ZnO, Sb2O3、Sb2O4、ZnSb2+5O6、Zn2.33Sb0.67O4Phase composition, wherein using ZnO as principal crystalline phase.
To (97.5at%-x) ZnO- (1at%) Bi2O3(0.5at%) Sb2O3(0.5at%) MnO2(0.5at%)
Co2O3X (x=0at%, 0.2at%, 0.4at%, 0.6at%) amount is separately added into the initial powder of system based varistor
ZnO voltage-sensitive ceramic additive.Raw material is weighed by the stoichiometric ratio in the above ingredient general formula：ZnO,Bi2O3、Sb2O3、MnO2、
Co2O3And additive；By weighed material powder using dehydrated alcohol as medium ball milling 4h, slurry obtained by ball milling is kept the temperature at 80 DEG C
After 8h dries powder, powder is fully ground, the polyvinyl alcohol (PVA) that its weight 10wt% is added dropwise is granulated.Then by acquisition
Powder compression moulding under the opposite pressure of 100MPa obtains diameter 10mm, the disk of thickness 1.5mm；Potsherd is sufficiently arranged
After viscous, in air respectively at 880,900,920,950 DEG C of sintering 2h, ZBSMC series pressure-sensitive ceramic is obtained.
ZBSMC series pressure-sensitive ceramic fine grinding processing to acquisition, by silver electrode after ultrasonic cleaning, tests its electric property.Its
In, the performance for the sample that sintering temperature obtains when being 920 DEG C is best, is shown in Table 3.
The electric property of 3 embodiment of table, 3 sample
By table three it can be seen that the addition of the additive can reduce the pressure-sensitive field strength of ZBSMC system varistor, when adding
When adding 0.4at%ZnO voltage-sensitive ceramic additive, the nonlinear factor of sample is up to 61, and preferable sintering temperature is down to 920
℃。
Embodiment 4 ZnO and Sb2O3Molar ratio be 6：1
1) by ZnO and Sb2O3Using deionized water as medium ball milling 3h, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be
6：1；
2) it will be ground after the drying of slurry that step 1) obtains, then powder is pressed into a sheet is put into crucible and calcine,
In, drying temperature is 120 DEG C, drying time 8h, and calcination temperature is 900 DEG C, calcination time 12h；
3) calcined powder is ground, is sieved by 60 mesh sieve to get the ZnO voltage-sensitive ceramic additive, master
It will be by ZnO, Sb2O3、Sb2O4、Zn7Sb2O12Phase composition, wherein using ZnO as principal crystalline phase.
To (97.5at%-x) ZnO- (1at%) Bi2O3(0.5at%) Sb2O3(0.5at%) MnO2(0.5at%)
Cr2O3It is separately added into x's (x=0at%, 0.2at%, 0.4at%, 0.6at%) in the initial powder of system based varistor
ZnO voltage-sensitive ceramic additive.Raw material is weighed by the stoichiometric ratio in the above ingredient general formula：ZnO,Bi2O3、Sb2O3、MnO2、
Cr2O3And additive；By weighed material powder using deionized water as medium ball milling 4h, slurry obtained by ball milling is kept the temperature at 120 DEG C
After 8h dries powder, powder is fully ground, the polyvinyl alcohol (PVA) that its weight 10wt% is added dropwise is granulated.Then by acquisition
Powder compression moulding under the opposite pressure of 100MPa obtains diameter 10mm, the disk of thickness 1.5mm；Potsherd is sufficiently arranged
After viscous, in air respectively at 880,900,920,950 DEG C of sintering 2h, ZBSMC series pressure-sensitive ceramic is obtained.
ZBSMC series pressure-sensitive ceramic fine grinding processing to acquisition, by silver electrode after ultrasonic cleaning, tests its electric property.Its
In, the performance for the sample that sintering temperature obtains when being 920 DEG C is best, is shown in Table 4.
The electric property of 4 embodiment of table, 4 sample
The addition of the additive can reduce the pressure-sensitive field strength of ZBSMC system varistor as can be seen from Table 4, work as addition
When 0.4at%ZnO voltage-sensitive ceramic additive, nonlinear factor is up to 77, and preferable sintering temperature is 920 DEG C.
Embodiment 5 ZnO and Sb2O3Molar ratio be 1：1
1) by ZnO and Sb2O3Using dehydrated alcohol as medium ball milling 4h, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be
1：1；
2) it is ground after drying the slurry that step 1) obtains, powder is put into crucible and is calcined, wherein drying temperature 80
DEG C, drying time 8h, calcination temperature is 800 DEG C, calcination time 10h；
3) calcined powder is ground, is sieved by 60 mesh sieve to get the ZnO voltage-sensitive ceramic additive, master
It will be by Sb2O3、Sb2O4、Sb2O5、Zn7Sb2O12Phase composition, wherein with Sb2O5For principal crystalline phase.
To (97at%-x) ZnO- (1at%) Bi2O3(0.5at%) Sb2O3(0.5at%) MnO2(0.5at%)
Co2O3(0.5at%) Cr2O3Be separately added into the initial powder of system based varistor x (x=0at%, 0.1at%,
0.3at%, 0.5at%) ZnO voltage-sensitive ceramic additive.Raw material is weighed by the stoichiometric ratio in the above ingredient general formula：ZnO,
Bi2O3、Sb2O3、MnO2、Co2O3、Cr2O3And additive；By weighed material powder using dehydrated alcohol as medium ball milling 4h, ball milling
After gained slurry keeps the temperature 8h drying powder at 80 DEG C, powder is fully ground, the polyvinyl alcohol of its weight 10wt% is added dropwise
(PVA) it is granulated.Then by the compression moulding under the opposite pressure of 100MPa of the powder of acquisition, diameter 10mm, thickness 1.5mm are obtained
Disk；Potsherd is sufficiently arranged after gluing, in air respectively at 880,900,920,950 DEG C of sintering 2h, obtains ZBSMCC system
Voltage-sensitive ceramic.
ZBSMCC series pressure-sensitive ceramic fine grinding processing to acquisition, by silver electrode after ultrasonic cleaning, tests its electric property.Its
In, the performance for the sample that sintering temperature obtains when being 920 DEG C is best, is shown in Table 5.
The electric property of 5 embodiment of table, 5 sample
The addition of the additive can reduce the pressure-sensitive field strength of ZBSMCC system varistor as can be seen from Table 5, when adding
When adding 0.1at%ZnO voltage-sensitive ceramic additive, nonlinear factor is up to 64, and preferable sintering temperature is 920 DEG C.
Embodiment 6 ZnO and Sb2O3Molar ratio be 1：1
1) by ZnO and Sb2O3Using dehydrated alcohol as medium ball milling 4h, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be
1：1；
2) it will be ground after the drying of slurry that step 1) obtains, then powder is pressed into a sheet is put into crucible and calcine,
In, drying temperature is 120 DEG C, drying time 8h, and calcination temperature is 900 DEG C, calcination time 12h；
3) calcined powder is ground, is sieved by 60 mesh sieve to get the ZnO voltage-sensitive ceramic additive, master
It will be by Sb2O3、Sb2O4、Sb2O5、Zn7Sb2O12Phase composition, wherein with Sb2O5For principal crystalline phase.
To (97.5at%-x) ZnO- (1at%) Bi2O3(0.5at%) Sb2O3(0.5at%) MnO2(0.5at%)
Cr2O3It is separately added into x's (x=0at%, 0.2at%, 0.4at%, 0.6at%) in the initial powder of system based varistor
ZnO voltage-sensitive ceramic additive.Raw material is weighed by the stoichiometric ratio in the above ingredient general formula：ZnO,Bi2O3、Sb2O3、MnO2、
Cr2O3And additive；By weighed material powder using deionized water as medium ball milling 4h, slurry obtained by ball milling is kept the temperature at 120 DEG C
After 8h dries powder, powder is fully ground, the polyvinyl alcohol (PVA) that its weight 10wt% is added dropwise is granulated.Then by acquisition
Powder compression moulding under the opposite pressure of 100MPa obtains diameter 10mm, the disk of thickness 1.5mm；Potsherd is sufficiently arranged
After viscous, in air respectively at 880,900,920,950 DEG C of sintering 2h, ZBSMC series pressure-sensitive ceramic is obtained.
ZBSMC series pressure-sensitive ceramic fine grinding processing to acquisition, by silver electrode after ultrasonic cleaning, tests its electric property.Its
In, the performance for the sample that sintering temperature obtains when being 920 DEG C is best, is shown in Table 6.
The electric property of 6 embodiment of table, 6 sample
The addition of the additive can reduce the pressure-sensitive field strength of ZBSMC system varistor as can be seen from Table 6, work as addition
When 0.2at%ZnO voltage-sensitive ceramic additive, nonlinear factor is up to 67, and preferable sintering temperature is 920 DEG C.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of preparation method of ZnO voltage-sensitive ceramic additive, which is characterized in that include the following steps：
1) by ZnO and Sb2O3Using solvent as medium ball milling, slurry is obtained, wherein ZnO and Sb2O3Molar ratio be 1~14：1；
2) slurry for obtaining step 1) is dried and is calcined to get the ZnO voltage-sensitive ceramic additive.
2. the preparation method of ZnO voltage-sensitive ceramic additive as described in claim 1, which is characterized in that described molten in step 1)
Agent is selected from one of dehydrated alcohol and deionized water or a variety of.
3. the preparation method of ZnO voltage-sensitive ceramic additive as described in claim 1, which is characterized in that in step 1), when ball milling
Between be 1~5h.
4. the preparation method of ZnO voltage-sensitive ceramic additive as described in claim 1, which is characterized in that in step 2), drying temperature
Degree is 80~120 DEG C.
5. the preparation method of ZnO voltage-sensitive ceramic additive as described in claim 1, which is characterized in that in step 2), further include
At least one of in following technical characteristic：
1) drying time is 5~15h；
2) calcination temperature is 700~900 DEG C；
3) calcination time is 5~12h.
6. the preparation method of ZnO voltage-sensitive ceramic additive as described in claim 1, which is characterized in that further include step 3)：It will
The ZnO voltage-sensitive ceramic additive that step 2) obtains is ground up, sieved.
7. the preparation method of ZnO voltage-sensitive ceramic additive as claimed in claim 6, which is characterized in that the mesh number of sieve is 60
~100 mesh.
8. a kind of ZnO voltage-sensitive ceramic additive, which is characterized in that use preparation method as described in any one of claim 1 to 7
It obtains.
9. ZnO voltage-sensitive ceramic additive as claimed in claim 8 is for being added in the raw material for preparing ZnO voltage-sensitive ceramic.
10. purposes as claimed in claim 9, which is characterized in that the additive amount of ZnO voltage-sensitive ceramic additive be 0.1~
0.6at%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987933A (en) * | 2019-04-01 | 2019-07-09 | 中国科学院上海硅酸盐研究所 | A kind of high gradient ZnO pressure-sensitive ceramic material of no Bi, Pr, V and preparation method thereof |
| CN112225553A (en) * | 2020-10-08 | 2021-01-15 | 烟台大学 | ZnO-based low-voltage high-nonlinearity pressure-sensitive ceramic co-fired with pure silver inner electrode and preparation method thereof |
| CN115020050A (en) * | 2022-06-08 | 2022-09-06 | 贵州大学 | Zn 7 Sb 2 O 12 Method for preparing ZnO piezoresistor by pre-synthesis |
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| JPH0383846A (en) * | 1989-08-25 | 1991-04-09 | Murata Mfg Co Ltd | Production of varistor |
| CN104150900A (en) * | 2014-07-28 | 2014-11-19 | 聊城大学 | Low-voltage additive for ZnO varistor and preparation method thereof |
| CN105272205A (en) * | 2015-10-12 | 2016-01-27 | 中国科学院上海硅酸盐研究所 | Low-temperature sintering zinc oxide varistor material and preparation method thereof |
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| JPH0383846A (en) * | 1989-08-25 | 1991-04-09 | Murata Mfg Co Ltd | Production of varistor |
| CN104150900A (en) * | 2014-07-28 | 2014-11-19 | 聊城大学 | Low-voltage additive for ZnO varistor and preparation method thereof |
| CN105272205A (en) * | 2015-10-12 | 2016-01-27 | 中国科学院上海硅酸盐研究所 | Low-temperature sintering zinc oxide varistor material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987933A (en) * | 2019-04-01 | 2019-07-09 | 中国科学院上海硅酸盐研究所 | A kind of high gradient ZnO pressure-sensitive ceramic material of no Bi, Pr, V and preparation method thereof |
| CN109987933B (en) * | 2019-04-01 | 2021-11-02 | 中国科学院上海硅酸盐研究所 | Bi, Pr and V-free high-gradient ZnO voltage-sensitive ceramic material and preparation method thereof |
| CN112225553A (en) * | 2020-10-08 | 2021-01-15 | 烟台大学 | ZnO-based low-voltage high-nonlinearity pressure-sensitive ceramic co-fired with pure silver inner electrode and preparation method thereof |
| CN115020050A (en) * | 2022-06-08 | 2022-09-06 | 贵州大学 | Zn 7 Sb 2 O 12 Method for preparing ZnO piezoresistor by pre-synthesis |
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