CN101891992B - Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof - Google Patents
Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof Download PDFInfo
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- CN101891992B CN101891992B CN201010238043A CN201010238043A CN101891992B CN 101891992 B CN101891992 B CN 101891992B CN 201010238043 A CN201010238043 A CN 201010238043A CN 201010238043 A CN201010238043 A CN 201010238043A CN 101891992 B CN101891992 B CN 101891992B
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- valve block
- zinc
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- oxide arrester
- arrester valve
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Abstract
The invention relates to an insulating coating on the side face of a zinc oxide lightning arrester valve plate and a coating method thereof. The insulating coating comprises the following components in percentage by weight: 65-70% of fluorocarbon resin, 15-20% of temperature-resistant insulating filler, 15-20% of curing agent, 1-3% of dispersant, 2.8-3.3% of modifier and 3-8% of solvent. The coating method comprises the following steps: mixing the components, milling with a sand mill, dispersing and filtering to obtain a paint with high flowability, evenness and stability; cleaning the side face of the zinc oxide lightning arrester valve plate with an ultrasonic cleaner, and baking at 120 DEG C for 2-3 hours; and coating the paint on the side face of the valve plate, and curing at room temperature for 8-16 hours or curing by baking in a baking oven. The coating has favorable heat resistance and insulating property, and strong toughness and hydrophobicity.
Description
[technical field]
The present invention relates to the coating composition of macromolecular compound, refer to Zinc-Oxide Arrester valve block side insulation coating and coating method thereof especially.
[background technology]
Zinc-Oxide Arrester is a kind of overvoltage protection, is installed in by near the protection equipment, with parallelly connected by protection equipment.The thunder arrester of excellent property can be with the overvoltage Limiting in the power system to the harmless level that insulate.Improve the protective value of thunder arrester, can not only improve the serviceability of electrical power trans mission/distribution system, and can reduce the insulation of electrical installation level, thereby alleviate weight of equipment, reduce cost.Along with domestic electrical network to extreme high voltage grade development, pressing for provides parameter advanced person, excellent property, ultra-high voltage thunder arrester product that safety is high.As the core component of Zinc-Oxide Arrester, its performance directly influences the result of use of thunder arrester to zinc oxide valve plate (or claiming the zinc oxide nonlinear valve block); And the quality of valve block side insulation coating has determined the height of thunder arrester tolerance lightning surge impact-level.Chinese patent 88100513.4 has been introduced a kind of method of manufacture of zinc oxide valve plate, and it is to be material of main part with the ZnO powder, with each addition material Bi
2O
3, Cr
2O
3, MnO
2, Co
2O
3Substitute Deng with its corresponding nitrate soln,, sinter valve block in 1100～1300 ℃ again through thorough mixing, drying, pressure forming.Japanese Patent JP2003119074 has introduced a kind of high-performance zinc oxide valve block method of manufacture; Characteristics are on the traditional raw material basis; Added the scandium oxide compound of molar percentage 0.001%～1.5%, the zinc oxide valve plate that makes has high nonlinear coefficient and excellent shock resistance.But these valve blocks are compared as yet with conventional oxidation zinc valve block aspect through-current capability and side insulation and are not significantly improved.
Aspect the valve block side insulation; Pertinent literature such as Chinese patent 96116258.9 have been introduced a kind of arrester valve piece made of metallic oxide method of manufacture; Be characterized in that valve block insulation selects good insulation preformance and resistant to elevated temperatures silastic material for use; Increased the valve block lateral creepage distance that insulate, can tolerate the impact of big electric current and do not have to burst to dodge and iron phenomenon.European patent EP 0620566 has been introduced a kind of zinc oxide valve plate side insulation with inorganic crystalline state glass coating, and staple is PbO, ZnO, B
2O
3, SiO
2, WO
3With the NiO powder.Also have the U.S. and more Japanese patents to introduce the unorganic glass coating, staple is PbO, is aided with ZnO, B
2O
3, SiO
2, Mo
2O
3, TiO
2And Fe
2O
3Deng powder additive.
Zinc oxide valve plate side insulation material can be divided into two types of organic insulation and inorganic insulating materials; Wherein organic materials is main with epoxy coating and organosilicon coating mainly; Inorganic materials can be divided into inorganic resistive formation glaze and glass glaze again, and table 1 is the concrete characteristics of above customary insulation layer.
The side insulation layer that table 1 zinc oxide valve plate is dissimilar
Above-mentioned inorganic side insulation coating; Not only cost an arm and a leg; And inorganic side glaze is prone to the shortcoming of moisture absorption in actual method of use, and the organic side insulation coating that relates in addition adopts the high bake curing process mostly, is prone in filming, form hole or pin hole in the curing; Be unfavorable for forming the insulation film of complete continuous densification, thereby conventional insulating coating is difficult to resist the super-large current impact.Its side insulation performance can't reach the relevant national standard prescribed value.
[summary of the invention]
The objective of the invention is to overcome the shortcoming and defect of traditional insulating material, provide that a kind of thermotolerance and insulating property are good, toughness and strong Zinc-Oxide Arrester valve block side insulation coating and the coating method thereof of hydrophobic nature.
The present invention adopts fluorocarbon resin as base material, is equipped with functional filler, solidifying agent, dispersion agent, properties-correcting agent and solvent etc., grinds through specific equipment and disperses, and makes the insulating coating material of excellent performance.Concrete measure of the present invention and scheme are following:
Zinc-Oxide Arrester valve block side insulation coating each component of the present invention is formed as follows by weight percentage:
Fluorocarbon resin 65-70; High temperature insulation filler 15-20; Solidifying agent 10-15; Dispersion agent 1-3; Properties-correcting agent 2-4; Solvent 2-7.
Said high temperature insulation filler can be SiO
2Or Al
2O
3, said solidifying agent can be that isocyanic ester, said properties-correcting agent can be that methyltrimethoxy silane or carboxy nitrile rubber, said dispersion agent can be that tetradecyl ammonium acetate or PEG2000, said solvent can be sec-butyl acetates.The C-F key bond distance of fluorocarbon resin is little, bond energy is big, chemicalstability is high; Filler SiO
2, Al
2O
3The adding of ultrafine powder can improve the thermotolerance and insulation ability of coating; Toughness and hydrophobic nature that can enhancement coating after properties-correcting agent adds.
The coating method of Zinc-Oxide Arrester valve block side insulation coating of the present invention comprises the steps:
A. all components with said Zinc-Oxide Arrester valve block side insulation coating mix, grind, disperse, and filter through the 100-140 eye mesh screen;
B. Zinc-Oxide Arrester valve block side is cleaned, and carried out drying treatment;
C. the coating that makes with a step is coated on Zinc-Oxide Arrester valve block side, solidifies the coating that Zinc-Oxide Arrester valve block side insulation coating is accomplished in the back.
[embodiment]
Combine embodiment that the present invention is described further at present.
Embodiment one: Zinc-Oxide Arrester valve block side insulation coated material is by weight percentage: fluorocarbon resin: SiO
2Or Al
2O
3: isocyanic ester: tetradecyl ammonium acetate or PEG2000: methyltrimethoxy silane or carboxy nitrile rubber: sec-butyl acetate=65: 15: 10: 3: 3: 4.
The coating method of Zinc-Oxide Arrester valve block side insulation coating comprises the steps:
A. all components with said Zinc-Oxide Arrester valve block side insulation coating mix with sand mill grinding dispersion 3 hours, filter through 120 eye mesh screens;
B. the Zinc-Oxide Arrester valve block is ground the valve block upper and lower surfaces with the diamond double-ended grinding machine; Clean with Ultrasonic Cleaners then, put into baking oven again through 120 ℃ of temperature bakings 2～3 hours, vertically stack after the valve block upper and lower surfaces is aluminium-plated, aluminium-plated thickness is 70-90 μ m;
C. it is 0.45～0.55Mpa at air pressure that the coating that a step is made uses air spray finishing, to Zinc-Oxide Arrester valve block surface spraying 3 times, makes coat-thickness reach 80～120 μ m; The valve block that coats was at room temperature placed 8 hours, accomplished the coating of Zinc-Oxide Arrester valve block side insulation coating.
Embodiment two: Zinc-Oxide Arrester valve block side insulation coated material is by weight percentage: fluorocarbon resin: SiO
2: isocyanic ester: tetradecyl ammonium acetate: methyltrimethoxy silane: sec-butyl acetate=70: 10: 10: 3: 3: 4.
The coating method of Zinc-Oxide Arrester valve block side insulation coating comprises the steps:
A. all components of said Zinc-Oxide Arrester valve block side insulation coating are mixed to grind with sand mill and disperseed 3 hours, obtain good fluidity, uniform and stable coating through 120 order stainless steel sift net filtrations;
B. the Zinc-Oxide Arrester valve block is ground the valve block upper and lower surfaces with the diamond double-ended grinding machine; Clean with Ultrasonic Cleaners then, put into baking oven again through 120 ℃ of bakings 2～3 hours, vertically stack after the valve block upper and lower surfaces is aluminium-plated, aluminium-plated thickness is 70-90 μ m;
C. it is 0.45～0.55Mpa at air pressure that the coating that a step is made uses air spray finishing, to Zinc-Oxide Arrester valve block surface spraying 3 times, makes coat-thickness reach 80～120 μ m; The valve block that coats was at room temperature placed 8 hours, accomplished the coating of Zinc-Oxide Arrester valve block side insulation coating.
Valve block by the foregoing description applies is tested by GB11032-2000, and compares with the conventional coatings valve block, and data are seen table 2:
Table 2 ZnO Zinc-Oxide Arrester valve block performance comparison
It is thus clear that the more traditional valve block of valve block performance that the present invention makes significantly improves, the square wave through-current capability improves more than 30%, and big electric current tolerance improves more than 20%, and this shows that new insulating coating has significantly improved the electric property of valve block.
The invention has the beneficial effects as follows: overcome the shortcoming and defect of traditional insulating material, the thermotolerance of coating and insulating property are good, the toughness and the hydrophobic nature of coating are strong.
Claims (7)
1. Zinc-Oxide Arrester valve block side insulation coating, it is characterized in that: each component is formed as follows by weight percentage:
Fluorocarbon resin 65-70; High temperature insulation filler 15-20; Solidifying agent 10-15; Dispersion agent 1-3; Properties-correcting agent 2-4; Solvent 2-7;
Said high temperature insulation filler is SiO
2Or Al
2O
3, said solidifying agent is that isocyanic ester, said properties-correcting agent are that methyltrimethoxy silane or carboxy nitrile rubber, said dispersion agent are that tetradecyl ammonium acetate or PEG2000, said solvent are sec-butyl acetates.
2. according to the Zinc-Oxide Arrester valve block side insulation coating of claim 1, it is characterized in that: each component is formed as follows by weight percentage: fluorocarbon resin: SiO
2Or Al
2O
3: isocyanic ester: tetradecyl ammonium acetate or PEG2000: methyltrimethoxy silane or carboxy nitrile rubber: sec-butyl acetate=65: 15: 10: 3: 3: 4.
3. Zinc-Oxide Arrester valve block side insulation coating, it is characterized in that: each component is formed as follows by weight percentage: fluorocarbon resin: SiO
2: isocyanic ester: tetradecyl ammonium acetate: methyltrimethoxy silane: sec-butyl acetate=70: 10: 10: 3: 3: 4.
4. according to the coating method of the Zinc-Oxide Arrester valve block side insulation coating of claim 1, it is characterized in that comprising the steps:
A. all components with said Zinc-Oxide Arrester valve block side insulation coating mix, grind, disperse, and filter through the 100-140 eye mesh screen;
B. Zinc-Oxide Arrester valve block side is cleaned, and carried out drying treatment;
C. the coating that makes with a step is coated on Zinc-Oxide Arrester valve block side, solidifies the coating that Zinc-Oxide Arrester valve block side insulation coating is accomplished in the back.
5. according to the coating method of the Zinc-Oxide Arrester valve block side insulation coating of claim 1, it is characterized in that comprising the steps:
A. all components with said Zinc-Oxide Arrester valve block side insulation coating mix with sand mill grinding dispersion 3～5 hours, filter subsequent use through 120 eye mesh screens;
B. the Zinc-Oxide Arrester valve block is cleaned the side through Ultrasonic Cleaners, and 120 ℃ of bakings 2～3 hours;
C. the coating that a step is made under air pressure 0.45～0.55Mpa with air spray finishing is coated on Zinc-Oxide Arrester valve block side; Coat-thickness 80～120 μ m; At room temperature solidified or put into baking oven through 8～16 hours; Solidified in 2～3 hours through 60～95 ℃ of bakings, accomplish the coating of Zinc-Oxide Arrester valve block side insulation coating.
6. according to the coating method of the Zinc-Oxide Arrester valve block side insulation coating of claim 2, it is characterized in that comprising the steps:
A. all components of said Zinc-Oxide Arrester valve block side insulation coating are mixed to grind with sand mill and disperseed 3 hours, obtain good fluidity, uniform and stable coating through 120 order stainless steel sift net filtrations;
B. the Zinc-Oxide Arrester valve block is ground the valve block upper and lower surfaces with the diamond double-ended grinding machine; The good back of mill is cleaned with Ultrasonic Cleaners, puts into baking oven afterwards through 120 ℃ of bakings 2～3 hours, vertically stacks after the valve block upper and lower surfaces is aluminium-plated, and aluminium-plated thickness is 70-90 μ m;
C. it is 0.45～0.55Mpa at air pressure that the coating that a step is made uses air spray finishing, to Zinc-Oxide Arrester valve block surface spraying 3 times, makes coat-thickness reach 80～120 μ m; The valve block that coats was at room temperature placed 8 hours, accomplished the coating of Zinc-Oxide Arrester valve block side insulation coating.
7. according to the coating method of the Zinc-Oxide Arrester valve block side insulation coating of claim 3, it is characterized in that comprising the steps:
A. all components of said Zinc-Oxide Arrester valve block side insulation coating are mixed to grind with sand mill and disperseed 3 hours, obtain good fluidity, uniform and stable coating through 120 order stainless steel sift net filtrations;
B. the Zinc-Oxide Arrester valve block is ground the valve block upper and lower surfaces with the diamond double-ended grinding machine; The good back of mill is cleaned with Ultrasonic Cleaners, puts into baking oven afterwards through 120 ℃ of bakings 2～3 hours, vertically stacks after the valve block upper and lower surfaces is aluminium-plated, and aluminium-plated thickness is 70-90 μ m;
C. it is 0.45～0.55Mpa at air pressure that the coating that a step is made uses air spray finishing, to Zinc-Oxide Arrester valve block surface spraying 3 times, makes coat-thickness reach 80～120 μ m; The valve block that coats was at room temperature placed 8 hours, accomplished the coating of Zinc-Oxide Arrester valve block side insulation coating.
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|---|---|---|---|
| CN201010238043A CN101891992B (en) | 2010-07-26 | 2010-07-26 | Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof |
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| CN201010238043A CN101891992B (en) | 2010-07-26 | 2010-07-26 | Insulating coating on side face of zinc oxide lightning arrester valve plate and coating method thereof |
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| CN101891992A CN101891992A (en) | 2010-11-24 |
| CN101891992B true CN101891992B (en) | 2012-10-17 |
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Families Citing this family (9)
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|---|---|---|---|---|
| CN102503582B (en) * | 2011-11-04 | 2013-05-08 | 上海大学 | Preparation method of inorganic-organic composite insulation coating resistant to large current impact |
| CN102732107B (en) * | 2012-07-13 | 2014-08-13 | 上海电缆研究所 | Coating and method for improving weathering resistance of resin matrix composite mandril |
| CN103773137A (en) * | 2014-01-20 | 2014-05-07 | 南通耀华机电有限公司 | Insulating film of electrical appliance switch |
| CN105588652A (en) * | 2015-12-15 | 2016-05-18 | 中国燃气涡轮研究院 | Air spraying-based turbine blade temperature measurement method |
| CN105427981A (en) * | 2015-12-25 | 2016-03-23 | 清华大学 | Preparation methods for voltage-sensitive ceramic valve block resistant to large impact current and insulation layer material of voltage-sensitive ceramic valve block |
| 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 |
| 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 |
| CN109256237A (en) * | 2018-09-10 | 2019-01-22 | 镇江朝阳机电科技有限公司 | A kind of high pressure corrosion resistant erosion bus and coating process |
| CN109449763B (en) * | 2018-09-18 | 2020-09-11 | 武汉水院电气有限责任公司 | Manufacturing method of multi-cavity gap lightning arrester |
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| US5447892A (en) * | 1989-11-08 | 1995-09-05 | Matsushita Electric Industrial Co., Ltd. | Crystallized glass compositions for coating oxide-based ceramics |
| CN101195724A (en) * | 2007-12-29 | 2008-06-11 | 株洲时代新材料科技股份有限公司 | Surface insulation varnish paint for wind power generation and method for producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5371191B2 (en) * | 2007-01-05 | 2013-12-18 | 日本特殊塗料株式会社 | Two-component room-temperature curing coating type vibration-damping coating composition |
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|---|---|---|---|---|
| US5447892A (en) * | 1989-11-08 | 1995-09-05 | Matsushita Electric Industrial Co., Ltd. | Crystallized glass compositions for coating oxide-based ceramics |
| CN101195724A (en) * | 2007-12-29 | 2008-06-11 | 株洲时代新材料科技股份有限公司 | Surface insulation varnish paint for wind power generation and method for producing the same |
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Owner name: SHENZHEN ABB SILVER STAR SURGE ARRESTER CO., LTD. Free format text: FORMER OWNER: SHENZHEN SILVER STAR POWER ELECTRONIC CO., LTD. Effective date: 20120605 |
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Effective date of registration: 20120605 Address after: 518000 Guangdong city of Shenzhen province Baoan District Guanlan Street Community Tourism Da BU Xiang Road Building 1301-101301-121301-141301-16A Applicant after: Shenzhen Silver Star Power Electronic Co., Ltd. Address before: Baoan District Guanlan street Shenzhen Guangdong province 518000 city sightseeing road star high tech Industrial Park Applicant before: Shenzhen Silver Star Electric Co., Ltd. |
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Address after: No. 851, Fangshan Second Road, industrial zone, Xiamen Torch High tech Zone (Xiang'an), Xiamen, Fujian Province Patentee after: Xiamen ABB arrester Co., Ltd Address before: 518000 Guangdong city of Shenzhen province Baoan District Guanlan Street Community Tourism Da BU Xiang Road Building 1301-101301-121301-141301-16A Patentee before: SHENZHEN ABB SILVER STAR ARRESTER Co.,Ltd. |