CN102557733A - Method for preparing inorganic insulating coating with high current surge resistance - Google Patents
Method for preparing inorganic insulating coating with high current surge resistance Download PDFInfo
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- CN102557733A CN102557733A CN2011103446186A CN201110344618A CN102557733A CN 102557733 A CN102557733 A CN 102557733A CN 2011103446186 A CN2011103446186 A CN 2011103446186A CN 201110344618 A CN201110344618 A CN 201110344618A CN 102557733 A CN102557733 A CN 102557733A
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- Prior art keywords
- coating
- preparation
- insulation coating
- high current
- inorganic insulation
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Links
- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000000498 ball milling Methods 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 27
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 230000008021 deposition Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000001856 Ethyl cellulose Substances 0.000 claims description 5
- 241000080590 Niso Species 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 229920001249 ethyl cellulose Polymers 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 235000011194 food seasoning agent Nutrition 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 abstract 2
- RLJMLMKIBZAXJO-UHFFFAOYSA-N lead nitrate Chemical compound [O-][N+](=O)O[Pb]O[N+]([O-])=O RLJMLMKIBZAXJO-UHFFFAOYSA-N 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000012856 weighed raw material Substances 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 16
- 239000011787 zinc oxide Substances 0.000 description 8
- 229960001296 zinc oxide Drugs 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000000875 high-speed ball milling Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Abstract
The invention relates to a method for preparing an inorganic insulating coating with high current surge resistance, and belongs to the technical field of preparation of insulating coatings for resistance sheets. The method is characterized in that: Pb(NO3)2, Co(NO3)2.H2O, NiSO4.6H2O and MnCl2.4H2O are used as raw materials. The method comprises the following steps of: dissolving the weighed raw materials in a ratio, adding 1mol/L NaOH solution to generate co-precipitate, performing ball milling, crushing, coating and sintering on the precipitate, and thus obtaining the required inorganic insulating coating. The coating has high current surge resistance and strong adhesive force, and is suitable for industrialized production and application.
Description
Technical field
The present invention relates to a kind of preparation method of inorganic insulation coating of anti-heavy current impact, specifically be applicable to the thunder arrester of used for transmission line, belong to thunder arrester with resistor disc insulating coating preparing technical field.
Background technology
Zinc oxide varistor is as the core component of Zinc-Oxide Arrester, and its performance directly influences the level of Zinc-Oxide Arrester.Resistor disc tolerance high current impulse withstanding capability is one of its important characteristic parameter.When time length of pulse high current more in short-term, edge flashing then can occur and destroy.Therefore, improve resistor disc tolerance steep wave high current impulse withstanding capability, must solve the edge flashing problem through the coating side face insulating protective layer.At present, two kinds of side insulation guard methods being arranged roughly both at home and abroad, is respectively cladding process and gas-solid reaction method.Wherein cladding process is that organic insulation (epoxy resin, gather phthalimide etc.) directly is coated on resistor-piece side, through being solidified to form insulating protective layer.And the gas-solid reaction rule is the green body side coating inorganic thing after pre-burning, behind high temperature sintering, forms resistive formation.
Inorganic side insulation layer glaze has firm, the ageing-resistant characteristics of combination, under the prerequisite that does not influence the volt-ampere characteristic of resistor disc own, can improve the shortwave loading capacity, improves moisture resistance, anti-electric arc, corona-resistance property; Inorganic side insulation layer glaze use temperature is high, has enlarged the use range of zinc oxide resistance sheet.Glass glaze has and combines advantages such as good, smooth, resistant with Zinc-oxide resistor-piece side, can give full play to the tolerance of zinc oxide resistance sheet body to big electric current.Inorganic side insulation layer glaze can adopt kinds of processes such as brushing, spraying, coating, and technology is simple, can enhance productivity.
Based on to the requirement of inorganic insulation coating technology, both hoped that insulating coating and base substrate interacted, forms good intermediate layer, hope that again the acquisition glaze is smooth, the surface characteristic of densified sintering product and do not damage the electric property of resistor disc.This just requires the insulating coating glaze is a kind of insulating material.Inorganic insulation coating glaze, must interact with base substrate in the high temperature sintering process attached to the zinc oxide resistance sheet green body side.Results of interaction is to react to each other, interpenetrate, so inorganic insulation coating glaze will use the starting material identical with the zinc oxide resistance sheet blank of material as far as possible, can guarantee that like this coefficient of expansion between the two adapts.In addition, seek out the insulation layer glaze surface of smooth densification, just must make the insulation layer glaze when high temperature, produce a certain amount of mobile vitreous that is easy to, make the surperficial uniform and smooth of glaze.Therefore, inorganic coating mainly contains inorganic crystalline state glass coating, TERNARY GLASS glaze coating and modified coating on this basis at present.
The method of traditional preparation process inorganic coating is coated the resistor disc base substrate with the inorganic powder slurry, then at very high sintering temperature, generally at 1100-1400 ℃, could obtain the comparatively coating structure of even compact.Too high temperature wastes energy on the one hand, raises the cost; The grain growth that also can cause the resistor disc body on the other hand, the over-all properties of reduction resistor disc.The inorganic insulation coating another one major issue of traditional method preparation is that anti-high current surge withstanding capability own is not strong.For improving above problem, the present invention adopts the method for chemical coprecipitation, and ultra-fine through using, uniform former slurry body reduces sintering temperature, thus obtain evenly fine and close, inorganic insulation coating that can anti-heavy current impact.
Summary of the invention
The object of the invention, just provide a kind of under relatively lower temp sintering, obtain compact and uniform structure, the preparation method of inorganic insulation coating that can anti-heavy current impact.
The technical scheme that the present invention adopts, its principal character comprises following step of preparation process:
(1) prescription is by the preparation of mole per-cent, and concrete component comprises: Pb (NO
3)
2: 65-75%, Co (NO
3)
2H
2O:10-17%, NiSO
4.6H
2O:6-12%, MnCl
24H
2O:5-10%.
(2) take by weighing each raw material by above prescription, be put in the container, add an amount of dissolved in distilled water, drip the NaOH solution of 1mol/L then, till no longer generation deposition, with sedimentation and filtration, oven dry;
(3) will go up the deposition that the step prepares; Put into frequency conversion planetary ball mill wet-milling 5-8h; Speed setting is 400rpm; Ball milling uses zirconia ball, Vilaterm jar, absolute ethyl alcohol, zirconia ball: absolute ethyl alcohol: powder quality is than being 15:4:1, and the slurry behind the grinding is placed on and dries 3h in 60 ℃ of baking ovens;
(4) will go up the powder that the step prepares, add alcohol-ethyl cellulose solution of 2-5wt%, mix; Coat resistor-piece side then; The about 0.2-0.4mm of thickness, treat the slurry seasoning after, put into process furnace heating 30-60min; Temperature is controlled to be 800-900 ℃, can make the inorganic insulation coating of anti-heavy current impact.
Raw material used in the present invention prepares through the method for chemical coprecipitation; And then use the high speed ball milling fully to pulverize; Former slurry body is that superfine powder is formed, and each component is very even, and this method is prepared the inorganic insulation coating and had excellent properties such as anti-heavy current impact.
Embodiment
Practical implementation of the present invention is described in down:
Embodiment 1
(1) prescription is by the preparation of mole per-cent, and concrete component comprises: Pb (NO
3)
2: 70%, Co (NO
3)
2H
2O:12%, NiSO
4.6H
2O:10%, MnCl
24H
2O:8%.
(2) take by weighing each raw material by above prescription, be put in the container, add an amount of dissolved in distilled water, drip the NaOH solution of 1mol/L then, till no longer generation deposition, with sedimentation and filtration, oven dry;
(3) will go up the deposition that the step prepares; Put into frequency conversion planetary ball mill wet-milling 6h; Speed setting is 400rpm; Ball milling uses zirconia ball, Vilaterm jar, absolute ethyl alcohol, zirconia ball: absolute ethyl alcohol: powder quality is than being 15:4:1, and the slurry behind the grinding is placed on and dries 3h in 60 ℃ of baking ovens;
(4) will go up the powder that the step prepares, add the alcohol-ethyl cellulose solution of mass percent 3%, mix; Coat resistor-piece side then; The about 0.3mm of thickness, treat the slurry seasoning after, put into process furnace heating 60min; Temperature is controlled to be 850 ℃, can make the inorganic insulation coating of anti-heavy current impact.
The inorganic insulation coating is carried out electrical performance testing, and the result lists in the table 1.
Embodiment 2
(1) prescription is by the preparation of mole per-cent, and concrete component comprises: Pb (NO
3)
2: 70%, Co (NO
3)
2H
2O:12%, NiSO
4.6H
2O:10%, MnCl
24H
2O:8%.
(2) take by weighing each raw material by above prescription, be put in the container, add an amount of dissolved in distilled water, drip the NaOH solution of 1mol/L then, till no longer generation deposition, with sedimentation and filtration, oven dry;
(3) will go up the deposition that the step prepares; Put into frequency conversion planetary ball mill wet-milling 6h; Speed setting is 400rpm; Ball milling uses zirconia ball, Vilaterm jar, absolute ethyl alcohol, zirconia ball: absolute ethyl alcohol: powder quality is than being 15:4:1, and the slurry behind the grinding is placed on and dries 3h in 60 ℃ of baking ovens;
(4) will go up the powder that the step prepares, add the alcohol-ethyl cellulose solution of mass percent 3%, mix; Coat resistor-piece side then; The about 0.3mm of thickness, treat the slurry seasoning after, put into process furnace heating 60min; Temperature is controlled to be 850 ℃, can make the inorganic insulation coating of anti-heavy current impact.
The inorganic insulation coating is carried out electrical performance testing, and the result lists in the table 1.
Embodiment 3
(1) prescription is by the preparation of mole per-cent, and concrete component comprises: Pb (NO
3)
2: 70%, Co (NO
3)
2H
2O:12%, NiSO
4.6H
2O:10%, MnCl
24H
2O:8%.
(2) take by weighing each raw material by above prescription, be put in the container, add an amount of dissolved in distilled water, drip the NaOH solution of 1mol/L then, till no longer generation deposition, with sedimentation and filtration, oven dry;
(3) will go up the deposition that the step prepares; Put into frequency conversion planetary ball mill wet-milling 6h; Speed setting is 400rpm; Ball milling uses zirconia ball, Vilaterm jar, absolute ethyl alcohol, zirconia ball: absolute ethyl alcohol: powder quality is than being 15:4:1, and the slurry behind the grinding is placed on and dries 3h in 60 ℃ of baking ovens;
(4) will go up the powder that the step prepares, add the alcohol-ethyl cellulose solution of mass percent 3%, mix; Coat resistor-piece side then; The about 0.3mm of thickness, treat the slurry seasoning after, put into process furnace heating 60min; Temperature is controlled to be 850 ℃, can make the inorganic insulation coating of anti-heavy current impact.
The inorganic insulation coating is carried out electrical performance testing, and the result lists in the table 1.
The electrical performance testing result of the resistor-piece side inorganic insulation coating of table 1 the present invention preparation:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The maximum tolerance value (kA) of the anti-high current surge withstanding capability of 4/10 μ s | 79 | 78 | 82 |
| Sticking power | 0 | 0 | 0 |
The instance proof is utilized the inorganic insulation coating of the present invention's technology preparation, have very high anti-high current surge withstanding capability, and sticking power is very strong, is suitable for suitability for industrialized production and application.
Claims (1)
1. the preparation method of the inorganic insulation coating of an anti-heavy current impact is characterized in that this method has following process step:
(1) prescription is by the preparation of mole per-cent, and concrete component comprises: Pb (NO
3)
2: 65-75%, Co (NO
3)
2H
2O:10-17%, NiSO
4.6H
2O:6-12%, MnCl
24H
2O:5-10%;
(2) take by weighing each raw material by above prescription, be put in the container, add an amount of dissolved in distilled water, drip the NaOH solution of 1mol/L then, till no longer generation deposition, with sedimentation and filtration, oven dry;
(3) will go up the deposition that the step prepares; Put into frequency conversion planetary ball mill wet-milling 5-8h; Speed setting is 400rpm; Ball milling uses zirconia ball, Vilaterm jar, absolute ethyl alcohol, zirconia ball: absolute ethyl alcohol: powder quality is than being 15:4:1, and the slurry behind the grinding is placed on and dries 3h in 60 ℃ of baking ovens;
(4) will go up the powder that the step prepares, add alcohol-ethyl cellulose solution of 2-5wt%, mix; Coat resistor-piece side then; The about 0.2-0.4mm of thickness, treat the slurry seasoning after, put into process furnace heating 30-60min; Temperature is controlled to be 800-900 ℃, can make the inorganic insulation coating of anti-heavy current impact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110344618 CN102557733B (en) | 2011-11-04 | 2011-11-04 | Method for preparing inorganic insulating coating with high current surge resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110344618 CN102557733B (en) | 2011-11-04 | 2011-11-04 | Method for preparing inorganic insulating coating with high current surge resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102557733A true CN102557733A (en) | 2012-07-11 |
| CN102557733B CN102557733B (en) | 2013-05-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110344618 Expired - Fee Related CN102557733B (en) | 2011-11-04 | 2011-11-04 | Method for preparing inorganic insulating coating with high current surge resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102557733B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177082A (en) * | 2014-07-09 | 2014-12-03 | 广西新未来信息产业股份有限公司 | Security type surge protection device valve plate material and preparation method thereof |
| CN104557139A (en) * | 2015-01-16 | 2015-04-29 | 武汉理工大学 | Electric-insulation ceramic coating material and preparation method thereof |
| CN107221398A (en) * | 2017-04-27 | 2017-09-29 | 辰硕电子(九江)有限公司 | A kind of side multilayer insulation means of defence of Zinc-Oxide Arrester valve block or MOV chips |
| CN108558389A (en) * | 2018-05-04 | 2018-09-21 | 南阳中祥电力电子有限公司 | A kind of Novel piezoresistor piece resistive formation slurry and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571078A (en) * | 2004-05-13 | 2005-01-26 | 上海大学 | Method for preparing high throughflow nanometre composite lightning arrester valve plate |
-
2011
- 2011-11-04 CN CN 201110344618 patent/CN102557733B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571078A (en) * | 2004-05-13 | 2005-01-26 | 上海大学 | Method for preparing high throughflow nanometre composite lightning arrester valve plate |
Non-Patent Citations (2)
| Title |
|---|
| 迟屹君等: "氧化锌电阻片侧面绝缘涂层的研究进展", 《电瓷避雷器》 * |
| 马书蕊等: "添加剂对氧化锌电阻片电学性能影响的研究进展", 《电瓷避雷器》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177082A (en) * | 2014-07-09 | 2014-12-03 | 广西新未来信息产业股份有限公司 | Security type surge protection device valve plate material and preparation method thereof |
| CN104177082B (en) * | 2014-07-09 | 2018-08-07 | 广西新未来信息产业股份有限公司 | A kind of safety electric surge protector valve plate material and preparation method thereof |
| CN104557139A (en) * | 2015-01-16 | 2015-04-29 | 武汉理工大学 | Electric-insulation ceramic coating material and preparation method thereof |
| CN104557139B (en) * | 2015-01-16 | 2016-08-24 | 武汉理工大学 | A kind of electric insulation ceramics coating material and preparation method thereof |
| CN107221398A (en) * | 2017-04-27 | 2017-09-29 | 辰硕电子(九江)有限公司 | A kind of side multilayer insulation means of defence of Zinc-Oxide Arrester valve block or MOV chips |
| CN108558389A (en) * | 2018-05-04 | 2018-09-21 | 南阳中祥电力电子有限公司 | A kind of Novel piezoresistor piece resistive formation slurry and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN102557733B (en) | 2013-05-08 |
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Granted publication date: 20130508 |