CN1011839B - Production method of zinc oxide resistor chip - Google Patents
Production method of zinc oxide resistor chipInfo
- Publication number
- CN1011839B CN1011839B CN 88100513 CN88100513A CN1011839B CN 1011839 B CN1011839 B CN 1011839B CN 88100513 CN88100513 CN 88100513 CN 88100513 A CN88100513 A CN 88100513A CN 1011839 B CN1011839 B CN 1011839B
- Authority
- CN
- China
- Prior art keywords
- zinc oxide
- solution
- nitrate
- ball milling
- additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention discloses an improved manufacturing method of a zinc oxide resistor chip, which is suitable for manufacturing the valve sheets of zinc oxide arresters in a large size, a middle size and a small size, and elements with good overvoltage protection property and good surge absorption property. The present invention adopts ZnO powdery material as a main body material, and additives, such as Bi2O3, Cr2O3, MnO2, Co2O3, etc. (except Sb2O3) are replaced by corresponding nitrate solutions; the resistor chip is manufactured in the steps of thorough mixing, drying, shaping by pressure and sintering at 1100 to 1300 DEG C. The zinc oxide resistor chip manufactured by the method has strong surge resistance, good nonlinearity and high potential gradient.
Description
The present invention relates to the method for a kind of improved manufacturing non-linear to voltage zinc oxide resistance sheet or resistive element, be specially adapted to make the bigger zinc oxide resistance sheet of diameter.This zinc oxide resistance sheet is in order to the valve block of making lightning arrester and overvoltage protection, surge absorbing element.
The uniformity of improving zinc oxide resistance sheet is vital for the ability of making large-scale zinc oxide resistance sheet, improving its withstand surge current and surge energy.The clear 59-92504 of Japanese Patent Laid-Open and examined patent publication 60-926 have introduced with the solution state mixing method and have made zinc oxide resistance sheet.This solution state mixing method is different with another kind of pulverulence mixing method, and various additives all give and are prepared into several solns earlier, can make various additives and material of main part ZnO obtain all even good mixing.Concrete method is: take the ZnO powder as material of main part, with additive Cr
2O
3, MnO
2, CO
2O
3Substitute additive Sb Deng with its corresponding nitrate solution
2O
3Substitute additive Bi with its corresponding salting liquid
2O
3Also substitute (with bismuth chloride or with Bi with corresponding bismuth salting liquid
2O
3Be dissolved in the method preparation bismuth salting liquid of nitric acid).ZnO material of main part and these solution fully mix, sintering under dry, pressure forming and the final high temperature.
The Japan Patent spy opens the alcoholic solution that clear 59-92504 has adopted bismuth chloride, the shortcoming of bringing is that the alcoholic solution of bismuth chloride can precipitate when mixing with the nitrate solution of other additive (solution such as cobalt nitrate, chromic nitrate, manganese nitrate), thereby must divide secondary to add, promptly the alcoholic solution of bismuth chloride to be mixed with the ZnO powder earlier, could add remaining additive solution after the drying, mixing again, dry has again increased operation like this.Another Japan Patent examined patent publication 60-926 adopts Bi
2O
3Be dissolved in the method preparation bismuth salting liquid of nitric acid, its shortcoming is to have excessive nitric acid that solution is not precipitated, and these excessive nitric acid are difficult to remove, and need to add precipitating reagent and make bismuth generate insoluble bismuth hydroxide precipitation as Bi
2O
3Substitute, this has just deviated from the original idea of this solution mixed method, because the bismuth salting liquid reverts back to again powder.Consider that from manufacturing cost additive adopts bismuth chloride worthwhile not as bismuth nitrate, but bismuth nitrate is water insoluble, so above two Japan Patents all do not adopt bismuth nitrate.
The main purpose of above-mentioned two Japan Patents only limits to improve the density of the zinc oxide resistance sheet that makes and non-linear.Purpose of the present invention is then mainly being improved uniformity, improves its anti-surge capacity, makes it have more actual application value.So the present invention is improved the solution state mixing method of above-mentioned two Japan Patents, make various additives mix more evenly with ZnO, and technology can be simplified, subsidiary the dispersiveness of the ZnO resistors piece performance that makes can be reduced.
Task of the present invention is finished as follows: take the ZnO powder as material of main part, with additive Cr
2O
3, MnO
2, Co
2O
3Substitute additive Bi in this method Deng with its corresponding nitrate solution (hereinafter referred to as solution 2)
2O
3The solution (hereinafter referred to as solution 1) that is dissolved in acetone with bismuth nitrate substitutes, and does not adopt the alcoholic solution of bismuth chloride, though because bismuth nitrate is water insoluble, can be dissolved in acetone.Sb
2O
3Then substitute without its corresponding saline solution.Direct and the Sb of ZnO powder
2O
3Mix mutually, after fully mixing with solution 1, solution 2 again, drying, 600 °-800 ℃ lower calcinings 3 hours, ball milling again added 1% adhesive polyethylene alcohol, and dry, granulation are at 800kg/cm
2Extrusion forming and 1100 ° of-1300 ℃ of lower sintering 2 hours under the pressure.
Sb among the clear 59-92504 of Japanese Patent Laid-Open
2O
3Substitute with antimony chloride solution, it is considered herein that Sb in this permittivity of zinc
2O
3Content is more, adds Sb
2O
3Fusing point own is lower, substitutes with its esters solution to have little significance, so directly adopted Sb among the present invention
2O
3With example the present invention is illustrated below.
Example 1
Table 1 has been listed raw materials used and has been formed.Earlier with ZnO, Sb
2O
3Mixing and ball milling 12 hours adds ZnO and Sb with solution 1
2O
3Mixing and ball milling is 1 hour in the material, adds then solution 2 mixing and ball milling 10 hours.Mix slurry 100 ℃ of oven dry, calcined 3 hours down at 600 °-800 ℃.Material after the calcining is ball milling 12 hours again.The polyvinyl alcohol of adding 1%, dry, granulation are at 800kg/cm
2Make the base substrate of φ 55 * 8mm under the pressure.Base substrate is removed polyvinyl alcohol under 400 ℃, then 1300 ℃ of following sintering 1.5 hours.The performance of the zinc oxide resistance sheet that burns till is as table 2(a) shown in.
Example 2
Raw material, composition, batching, compressing tablet process are identical with example 1.The base substrate diameter is φ 65mm and φ 80mm.Also under 400 ℃, remove polyvinyl alcohol, then 1250 ℃ of following sintering 2 hours.The performance of the zinc oxide resistance sheet that burns till as the table 2(b) and (c) shown in.
Table 1
The component of zinc oxide resistance sheet
ZnO Sb
2O
3Solution 1 solution 2
Chromic nitrate 24 grams
813 grams, 58 gram bismuth nitrates, 72 gram cobalt nitrates, 17 grams
Be dissolved in acetone manganese nitrate 16 grams
Water-soluble
Table 2
The performance of zinc oxide resistance sheet
Resistor disc size nonlinear system electric potential gradient 2ms square wave 2ms square wave
NO. through-current capacity current density
(mm) count (A) (A/cm of α (KV/cm)
2)
a φ43.7×5.6 80-100 1.80 500 36
b φ53.4×8.0 60-100 1.80-2.10 600-700 34
c φ64.0×12.0 60-100 1.70-1.90 800 30
Characteristics of the present invention and advantage are:
(1) the inventive method technology is simpler, is applicable to other various prescriptions of similar zinc oxide resistance sheet.
(2) as seen from Table 2, the zinc oxide resistance sheet that the present invention makes has that anti-surge capacity is strong, electric potential gradient is high and non-linear good advantage, is suitable for making the valve block and the overvoltage protection of large-scale and small-sized zinc oxide arrester, the element that the surge absorbability is strong.
(3) the present invention can reduce cost of material, and the performance dispersiveness of gained zinc oxide resistance sheet is minimum.
Claims (2)
1, a kind of manufacture method of zinc oxide resistance sheet is comprising take the ZnO powder as material of main part, with additive Cr
2O
3, MnO
3, Co
2O
3Substitute additive Bi with its corresponding nitrate solution
2O
3Also substitute with its bismuth salting liquid, through fully mixing, doing bath, calcining, ball milling, extrusion forming and final high temperature sintering, feature of the present invention is additive Bi
2O
3The solution that is dissolved in acetone with bismuth nitrate substitutes additive Sb
2O
3Directly mix mutually with the ZnO powder.
2, by the manufacture method of the described zinc oxide resistance sheet of claim 1, it is characterized in that ZnO813 gram and Sb
2O
3Add solution 1(bismuth nitrate 72 grams after during 58 gram mixing and ball milling 12 and be dissolved in acetone), ball milling is 1 hour again, it is water-soluble to add then solution 2(chromic nitrate 24 grams, cobalt nitrate 17 grams and manganese nitrate 16 grams), ball milling was 10 hours again, mixes slurry 100 ℃ of oven dry, 600 °-800 ℃ lower calcinings 3 hours, the calcining honest material is ball milling 12 hours again, add 1% polyvinyl alcohol, dry, granulation are at 800kg/cm
2Make base substrate under the pressure, base substrate was 1100 ° of-1300 ℃ of lower sintering 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100513 CN1011839B (en) | 1988-02-02 | 1988-02-02 | Production method of zinc oxide resistor chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100513 CN1011839B (en) | 1988-02-02 | 1988-02-02 | Production method of zinc oxide resistor chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1034822A CN1034822A (en) | 1989-08-16 |
| CN1011839B true CN1011839B (en) | 1991-02-27 |
Family
ID=4831384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88100513 Expired CN1011839B (en) | 1988-02-02 | 1988-02-02 | Production method of zinc oxide resistor chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011839B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046172C (en) * | 1996-12-31 | 1999-11-03 | 中国科学院等离子体物理研究所 | Zinc oxide ceramic linear resistor and its producing method |
| CN1046053C (en) * | 1997-06-18 | 1999-10-27 | 中国科学院新疆物理研究所 | Chip material for microvaristor and its preparation |
| CN100426425C (en) * | 2003-11-11 | 2008-10-15 | 郑琛 | Process for producing modified zinc oxide nonlinear resonance eliminator |
| CN101436456B (en) * | 2008-12-11 | 2011-03-23 | 中国西电电气股份有限公司 | Method for preparing zinc oxide resistance card |
| CN102510054B (en) * | 2011-11-07 | 2016-02-03 | 靳力 | Rc absorber and preparation method thereof |
| CN103030171B (en) * | 2012-12-17 | 2014-05-28 | 湖南丰日电源电气股份有限公司 | Method for preparing modified zinc oxide |
| CN106747406A (en) * | 2017-02-14 | 2017-05-31 | 爱普科斯电子元器件(珠海保税区)有限公司 | Unleaded insulative ceramic coatings Zinc-Oxide Arrester valve block high and preparation method thereof |
| CN108503392B (en) * | 2018-04-10 | 2020-01-21 | 清华大学 | Liquid high-resistance layer for zinc oxide piezoresistor |
-
1988
- 1988-02-02 CN CN 88100513 patent/CN1011839B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034822A (en) | 1989-08-16 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |