CN103496970A - Voltage-sensitive ceramic material and preparation method thereof - Google Patents
Voltage-sensitive ceramic material and preparation method thereof Download PDFInfo
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- CN103496970A CN103496970A CN201310451812.3A CN201310451812A CN103496970A CN 103496970 A CN103496970 A CN 103496970A CN 201310451812 A CN201310451812 A CN 201310451812A CN 103496970 A CN103496970 A CN 103496970A
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Abstract
The invention relates to a voltage-sensitive ceramic material and a preparation method thereof, belonging to the field of ceramic process technologies. The voltage-sensitive ceramic material comprises the following components: 93-95 parts of ZnO, 0.6-0.8 part of Bi2O3, 0.9-1.3 parts of Sb2O3, 1.0-1.3 parts of CoO, 0.5-0.8 part of MnCO3, 0.5-0.8 part of Cr2O3, 0.5-0.8 part of NiO, and 1.0-1.5 parts of Pr6O11. The preparation method comprises the following steps of pouring the components into a stirring ball mill according to proportion, adding pure water of 85-93% of the total weight of additives, ball milling for 2-4 hours till the grain size is less than 1.3mu m, then heating the obtained mixed solution up to 85-100 DEG C, keeping warm and stirring continuously till the solvent is evaporated and becomes paste, drying the paste, keeping warm for 6-8 hours at 500-580 DEG C, finally ball milling, and obtaining the zinc oxide voltage-sensitive ceramic compound powder. The ceramic material has excellent voltage-sensitive property, has a simple preparation method, has no toxicity and no environment contamination, and is beneficial to industrial large scale production.
Description
Technical field
The present invention relates to a kind of stupalith and preparation method thereof, be specifically related to a kind of pressure-sensitive ceramic material and preparation method thereof, belong to ceramic processing technique field.
Background technology
Voltage-sensitive ceramic refers to that resistance value is along with impressed voltage changes the semiconductive ceramic that a significant nonlinearities change is arranged, there is non-linear volt-ampere characteristic, under a certain critical voltage, the based varistor resistance value is very high, almost there is no electric current, but when surpassing this critical voltage, resistance will sharply change, and have electric current to pass through, with a little increase of voltage, electric current can increase very soon.Voltage-sensitive ceramic mainly contains SiC, TiO2, SrTiO3 and the large class of ZnO tetra-at present; surely belong to zinc oxide pressure-sensitive ceramic but application is wide, performance is good; because the ZnO voltage-sensitive ceramic presents pressure-sensitive character preferably; in the various devices such as power system, electronic circuit, household electrical appliance, all be widely used, especially the application aspect high-performance surge absoption, overvoltage protection, superconductivity and gapless arrestyer is the most outstanding.
Zinc oxide pressure-sensitive ceramic is a quasi-resistance with adding voltage thereon and the resistor of sensitive variation, the non-linear volt-ampere characteristic that its principle of work is special based on piezoresistive material used.The piezoresistor of being made by the zinc oxide semi-conductor pottery is due to special performances such as it are cheap, easily manufactured, nonlinear factor is large, the time of response is fast, residual voltage is low, temperature conefficient of voltage is little, leakage current is little; can play the effect of overvoltage protection, anti-lightning, inhibition momentary pulse, and be widely used in the fields such as electric power (AC and DC power transmission and distribution), traffic, communication, industrial protection, electronics, military affairs.Along with the development of electric power and the transformation of electrical network, the development of electronic information, household electric appliances, demand to piezoresistor is increasing, to the requirement of performance, will be more and more higher, the particularly modernization of military equipment, informationization, the performance of piezoresistor is had higher requirement.
At present, the high performance piezoresistor of China also mainly relies on import, therefore studies high performance pressure-sensitive ceramic material, has great economic and social benefit.The good development prospect between voltage dependent resistor, the research and development of voltage dependent resistor are also in development.201210130308.9 disclose a kind of SnO
2-Zn
2snO
4compound voltage-sensitive ceramic and preparation method, technique is simple, can be for large-scale industrial production, but voltage-dependent characteristic is not good.And 201210093569.8 disclose a kind of low-temperature sintering Zinc oxide pressure-sensitive ceramic material and preparation method thereof, its technique is simple, and energy consumption is little, and environmental protection still exists the problem of voltage-dependent characteristic shortcoming.Therefore, the invention provides a kind of high performance pressure-sensitive ceramic material and preparation method thereof, meet preparation technology simple simultaneously, the requirement of environmentally safe, the development trend in adaptation market.
Summary of the invention
The purpose of this invention is to provide a kind of pressure-sensitive ceramic material, this stupalith has good pressure-sensitive character, and preparation technology is simple, nontoxic, and environmentally safe is conducive to industrial scale production.
In order to address the above problem, the technical solution adopted in the present invention is:
A kind of pressure-sensitive ceramic material is comprised of the component of following weight part:
93～95 parts of ZnO, Bi
2o
30.6～0.8 part, Sb
2o
30.9～1.3 parts, 1.0～1.3 parts of CoO, MnCO
30.5～0.8 part, Cr
2o
30.5～0.8 part, 0.5～0.8 part of NiO, Pr
6o
111.0～1.5 parts.
Described zinc oxide adopts the zinc oxide that mass content is 99%.
A kind of preparation method of pressure-sensitive ceramic material, comprise the steps:
Described ZnO raw material particle size is 0.40～0.43 μ m, and loose density is 0.65～0.75g/cm
3, described additive raw material particle diameter is 2.5～5 μ m, loose density is 0.7～1.4g/cm
3; To pour in proportion in agitating ball mill by above-mentioned substance, and add 85～93% the pure water that weight is described additive gross weight, ball milling 2～4 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 85～100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 6～8 hours under 500～580 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder.
Described ZnO raw material particle size is 0.40 μ m, and loose density is 0.65g/cm
3; Described additive raw material particle diameter is 5 μ m, and loose density is 1.4g/cm
3.
The present invention with respect to the beneficial effect of prior art is:
Technique of the present invention is simple, with low cost; Prepared pressure-sensitive ceramic material voltage-dependent characteristic excellence, preparation technology is simple, nontoxic, and environmentally safe is conducive to industrial scale production.
Embodiment
Below by embodiment, the present invention is described in further details, these embodiment only are used for illustrating the present invention, do not limit the scope of the invention.
embodiment 1
A kind of pressure-sensitive ceramic material is comprised of the component of following weight part:
94 parts of ZnO, Bi
2o
30.8 part, Sb
2o
31.2 part, 1.0 parts of CoO, MnCO
30.5 part, Cr
2o
30.5 part, 0.5 part of NiO, Pr
6o
111.5 part.
Its preparation method comprises the steps:
Described ZnO raw material particle size is 0.40 μ m, and loose density is 0.65g/cm
3, described additive raw material particle diameter is 5 μ m, loose density is 1.4g/cm
3; To pour in proportion in agitating ball mill by above-mentioned substance, and add 85% the pure water that weight is described additive gross weight, ball milling 2 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 8 hours under 580 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder.
embodiment 2
A kind of pressure-sensitive ceramic material is comprised of the component of following weight part:
93.7 parts of ZnO, Bi
2o
30.8 part, Sb
2o
31.2 part, 1.0 parts of CoO, MnCO
30.5 part, Cr
2o
30.5 part, 0.8 part of NiO, Pr
6o
111.5 part.
Its preparation method comprises the steps:
Described ZnO raw material particle size is 0.41 μ m, and loose density is 0.75g/cm
3, described additive raw material particle diameter is 5 μ m, loose density is 1.4g/cm
3; To pour in proportion in agitating ball mill by above-mentioned substance, and add 85% the pure water that weight is described additive gross weight, ball milling 2 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 8 hours under 580 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder.
embodiment 3
A kind of pressure-sensitive ceramic material is comprised of the component of following weight part:
94.2 parts of ZnO, Bi
2o
30.6 part, Sb
2o
31.2 part, 1.0 parts of CoO, MnCO
30.5 part, Cr
2o
30.5 part, 0.5 part of NiO, Pr
6o
111.5 part.
Its preparation method comprises the steps:
Described ZnO raw material particle size is 0.41 μ m, and loose density is 0.75g/cm
3, described additive raw material particle diameter is 5 μ m, loose density is 1.4g/cm
3; To pour in proportion in agitating ball mill by above-mentioned substance, and add 85% the pure water that weight is described additive gross weight, ball milling 2 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 7 hours under 500 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder.
embodiment 4
A kind of pressure-sensitive ceramic material is comprised of the component of following weight part:
94.1 parts of ZnO, Bi
2o
30.6 part, Sb
2o
31.3 part, 1.0 parts of CoO, MnCO
30.5 part, Cr
2o
30.5 part, 0.5 part of NiO, Pr
6o
111.5 part.
Its preparation method comprises the steps:
Described ZnO raw material particle size is 0.41 μ m, and loose density is 0.75g/cm
3, described additive raw material particle diameter is 2.5 μ m, loose density is 0.7g/cm
3; To pour in proportion in agitating ball mill by above-mentioned substance, and add 85% the pure water that weight is described additive gross weight, ball milling 2 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 7 hours under 500 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder.
embodiment 5
A kind of pressure-sensitive ceramic material is comprised of the component of following weight part:
94.1 parts of ZnO, Bi
2o
30.6 part, Sb
2o
31 part, 1.3 parts of CoO, MnCO
30.5 part, Cr
2o
30.5 part, 0.5 part of NiO, Pr
6o
111.5 part.
Its preparation method comprises the steps:
Described ZnO raw material particle size is 0.41 μ m, and loose density is 0.75g/cm
3, described additive raw material particle diameter is 2.5 μ m, loose density is 0.7g/cm
3; To pour in proportion in agitating ball mill by above-mentioned substance, and add 95% the pure water that weight is described additive gross weight, ball milling 2 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 8 hours under 540 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder.
Claims (5)
1. a pressure-sensitive ceramic material, it is characterized in that: the component by following weight part forms:
93～95 parts of ZnO, Bi
2o
30.6～0.8 part, Sb
2o
30.9～1.3 parts, 1.0～1.3 parts of CoO, MnCO
30.5～0.8 part, Cr
2o
30.5～0.8 part, 0.5～0.8 part of NiO, Pr
6o
111.0～1.5 parts.
2. a kind of pressure-sensitive ceramic material according to claim 1, is characterized in that: the zinc oxide that described zinc oxide employing mass content is 99%.
3. the preparation method of a pressure-sensitive ceramic material, is characterized in that: comprise the steps:
Get 93～95 parts of ZnO, Bi
2o
30.6～0.8 part, Sb
2o
30.9～1.3 parts, 1.0～1.3 parts of CoO, MnCO
30.5～0.8 part, Cr
2o
30.5～0.8 part, 0.5～0.8 part of NiO, Pr
6o
111.0 pour in agitating ball mill for～1.5 parts, and add 85～93% the pure water that weight is described additive gross weight, ball milling 2～4 hours, be less than 1.3 μ m to particle diameter, then the gained mixing solutions is heated to 85～100 ℃, continue insulation and stirring and make solvent be evaporated to sticky mashed prod, mashed prod is dried, then be incubated 6～8 hours under 500～580 ℃; Finally carry out ball-milling processing, finally obtain zinc oxide varistor ceramic composite powder; This stupalith voltage-dependent characteristic excellence, preparation technology is simple, nontoxic, and environmentally safe is conducive to industrial scale production.
4. the preparation method of a kind of pressure-sensitive ceramic material according to claim 3, it is characterized in that: described ZnO raw material particle size is 0.40 μ m, and loose density is 0.65g/cm
3.
5. the preparation method of a kind of pressure-sensitive ceramic material according to claim 3, it is characterized in that: described additive raw material particle diameter is 5 μ m, and loose density is 1.4g/cm
3.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104230327A (en) * | 2014-09-05 | 2014-12-24 | 佛山市新战略知识产权文化有限公司 | Pressure-sensitive ceramic membrane and preparation method thereof |
| CN108751978A (en) * | 2018-06-19 | 2018-11-06 | 承德伏安电工有限公司 | The preparation method of zinc oxide pressure-sensitive ceramic resistor disc |
| CN111925206A (en) * | 2020-07-01 | 2020-11-13 | 安徽锦华氧化锌有限公司 | Preparation method of lightning arrester zinc oxide pressure-sensitive valve plate ceramic precursor |
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2013
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| CN101265083A (en) * | 2008-04-21 | 2008-09-17 | 上海大学 | Zinc oxide varistor ceramic material doped with rare earth nitrate and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104230327A (en) * | 2014-09-05 | 2014-12-24 | 佛山市新战略知识产权文化有限公司 | Pressure-sensitive ceramic membrane and preparation method thereof |
| CN108751978A (en) * | 2018-06-19 | 2018-11-06 | 承德伏安电工有限公司 | The preparation method of zinc oxide pressure-sensitive ceramic resistor disc |
| CN111925206A (en) * | 2020-07-01 | 2020-11-13 | 安徽锦华氧化锌有限公司 | Preparation method of lightning arrester zinc oxide pressure-sensitive valve plate ceramic precursor |
| CN111925206B (en) * | 2020-07-01 | 2022-05-03 | 安徽锦华氧化锌有限公司 | Preparation method of lightning arrester zinc oxide pressure-sensitive valve plate ceramic precursor |
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Application publication date: 20140108 |