CN102615913A - Preparation method for novel large-current-resistant arrester valve plate glaze - Google Patents
Preparation method for novel large-current-resistant arrester valve plate glaze Download PDFInfo
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- CN102615913A CN102615913A CN2012100442648A CN201210044264A CN102615913A CN 102615913 A CN102615913 A CN 102615913A CN 2012100442648 A CN2012100442648 A CN 2012100442648A CN 201210044264 A CN201210044264 A CN 201210044264A CN 102615913 A CN102615913 A CN 102615913A
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- coating
- modified organic
- silicone resin
- glaze
- silicon resin
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Abstract
The invention relates to coating type large-current-resistant arrester valve plate glaze and a preparation method thereof. The coating type large-current-resistant arrester valve plate glaze has the characteristic of single-layer double-component coating structure. According to the coating type large-current-resistant arrester valve plate glaze, the coating substrate is a boron type microcrystalline glass doped zinc oxide sintering sheet; the coating component A consists of modified silicon resin of epoxide group; and the component B consists of amine modified organic silicon resin such as diethylenetriamine modified organic silicon resin, triethylenetetramine modified organic silicon resin, polyene polyamine modified organic silicon resin, diethylamine modified organic silicon resin, triethylamine modified organic silicon resin, dimethylamine modified organic silicon resin and ethylenediamine modified organic silicon resin, propylamine modified silicon resin, polyamide #650, gamma amino propyl triethoxysilane (KH550) or mixture thereof. The preparation method comprises the following steps: mixing the component A and the component B according to the ratio of A to B of (80-100):(1-4); coating; and heating (the temperature is from room temperature to 600 DEG C) so as to solidify the mixture to obtain a glaze-coated large-current-resistant arrester valve plate.
Description
Technical field:
The present invention relates to a kind of preparation method of novel anti-big electric current arrester valve piece made glaze.
Background technology:
Anti-big electric current arrester, parts as a whole, each part is all very high to insulating requirements.In use and electric performance test, valve block, glaze layer, " glaze-valve block " each several part need have the identical insulation order of magnitude, as long as there is a part electric leakage can become " short slab " of integral member, cause breakdown accident.When valve block, glaze layer are the different materials composition; Two kinds of different materials at first have outside good every electrical property; Be faced with the uniformity of compatibility (interpenetrating adhesiveness), hot expansibility simultaneously, be easy to process with coating, use in many difficult problems such as consistent of property.
The passed by technology path of " inorganic coating---organic coating---organic and inorganic mixed coating---organically-modified coating " of traditional anti-big electric current arrester valve piece made glaze.We are with pure organic coating, and particularly pure organic siliconresin exists: problems such as to the poor adhesive force of matrix, treatment temperature is higher and coating machine intensity is not high, and hardening time is long.
The present invention solves the problems referred to above through homemade epoxy resin modified organosilicon resin.Epoxy resin has the valve block matrix adhesive force strong, solidification temperature can from room temperature to temperature regulate, curing rate also can be near slow free adjustment, the mechanical advantages of high strength of filming.
During the present invention adopts, low-molecular-weight epoxy resin (E42) is the material modification organic siliconresin.Ethyoxyl on the organosilicon oligomer and the hydroxyl reaction on the epoxy resin are sloughed alcohol, carry out graft reaction, and simultaneously, the organosilicon oligomer is sloughed moisture under the catalytic action of aphthenic acids cutting edge of a knife or a sword, and molecular weight increases; Wherein dealcoholization can be illustrated with following formula:
The hear resistance of silicones depends on the organic group that silicon atom connected on the polysiloxanes (Si-R key) when R is methyl, and high temperature (＞300 ℃) can be decomposed into CO down
2And H
2O when R is phenyl, then needs (>=400 ℃) just to decompose, but phenyl content greater than after 60%, the condensation rates of resin is very slow, it also is worthless that product is thermoplasticity.Therefore this project adopts R/Si (promptly a silicon atom on the average organic radix that connects)=1.5-1.7, and phenyl content is 40-55%, and silicones drying property, condensation reaction speed and the film forming of synthesizing thus are all more satisfactory.
The selection of curing agent.Epoxy modified silicone resin is with thermoplasticity, solubility give aggressiveness to the insoluble thermosetting that does not burn, experienced the process of network cross-linked polymerization, become three-dimensional netted macromolecule at last.Curing agent is as the part of network polymers, and it is not only to service life, curing rate, and the hear resistance and the mechanical strength of final cured product played an important role.
From the hear resistance of epoxy resin cured product, electric oxygen insulating properties, it is only selecting acid anhydride type curing agent for use, but its curing rate is slow.Though and amine curing agent is inferior slightly at electrical insulating property, flow regime is unobvious through solidifying the B stage, helps the resistor-piece side glaze application of plumbness.Amine modified organic silicone resin structure such as figure below that the present invention adopts:
(wherein X, Y, Z are non-zero positive integer)
The mixed proportion of A component and B component
The present invention adopts " secondary brushing " technology at the mixed coating process of glaze.Its technology is embodied in: after the application for the first time, room temperature kept 0-2 hour, then through 150-180 ℃/high-temperature process, and cooling in 0.5-2 hour; Application for the second time applies identical A after for the surface of application for the first time again, the rete that the B bi-component is mixed, and room temperature was placed 1-5 hour, through temperature 120-150 ℃ high-temperature process, was cooled to room temperature in 0.5-2 hour.Through the secondary application, the valve block glaze film maintenance that secondary baking is handled is smooth, smooth, thickness even, adhesive force is arranged.
The mixing of bi-component epoxy modified silicone resin, coating and the secondary baking technology that the present invention relates to have:
1. painting method is easy to be understandable.
2. curing easy (secondary baking).
3. between coating and the matrix, be connected with chemical bond between coating and the coating, form tridimensional network, have intensity, glossy, thickness is even, hear resistance is high.
4. component is respectively epoxide modified silicones and amine modified organic silicone resin in the coating, and rare accessory substance produces environmental friendliness in ingredients and the coating.
5. coating layer damages, and can reclaim coating again.
Domestic and international report CN101383208 about anti-big electric current arrester valve piece made glaze, US20110061891A1, US00601828A,
US00547907A through self check and the retrieval of service center of patent office searching, does not find to influence the patent of the trendy property of the present invention.
Summary of the invention:
Content of the present invention such as following technical scheme:
One .A component raw material is formed proportioning
| Little molecule epoxide | 1～4 part (weight portion, down together) |
| Silicones | 80～100 parts |
| Solvent | 2～8 parts |
| Dispersant | 1～5 part |
Two .B component raw material are formed proportioning
| Organic amine | 50～80 parts |
| Silicones | 80～100 parts |
| Solvent | 1～15 part |
Three. performance test
1. adhesive force is tested the ASTMD3359-2009e2A method
On film appearance coating, mark 10X10 grid with blade, every lattice 2x5mm can not scratch substrate when noting drawing.Adhere on the grid with a slice pressure sensitive adhesive tape, then with peeling off by about 200mm/min speed with 180 ° of angles on the adhesive tape.Continue and get the coating stripping number of squares, be decided to be the rate of peeling off.To get 8 appearance average at every turn.
2. hardness test
GB6739-86 hardness of film pencil determination method
3. electrical strength test
GB/T 1408.1-2006 " insulating materials electrical strength test method first: test under the power frequency "
4. specific insulation
GB/T 1410-2006 " solid insulating material specific insulation and surface resistivity assay method "
6. heavy impulse current and square wave current
GB/T 16927-1997 " high-voltage test techniques first: ordinary test requires "
The specific embodiment
Embodiment one
The preparation of A component: the epoxy agent of 5ml dissolve with ethanol " E42 " 20 grams, silicon oligomer 80 grams slowly drip, and keep temperature to be no more than 50 ℃, stir, and continue to stir 1 hour to dropwising.
The preparation of B component: organic amine 25 grams are dissolved in the little solvent, and the silicones that drips 100 grams stirs, and maintains the temperature at room temperature.
A, B mix: B slowly adds among the A, stirs, and keeps temperature below 50 ℃, adds and continues to stir 3～5 hours, uses immediately.
In the zinc oxide valve plate side that is mixed with the boron microcrystalline glass in series, precoating has silane coupler KH-560, divides the secondary application: be coated with the back room temperature for the first time and left standstill 1 hour.180 ℃ of high-temperature process of warp 1.5 hours, cooling; Apply for the second time and left standstill 2 hours, 120 ℃ of high-temperature process 2 hours.The coating finished product.
Embodiment two
The preparation of A component, B component is with " embodiment one "
In the zinc oxide valve plate side, pre-coating silane resin acceptor kh-550, three applications then.First is coated with A, B blending ingredients room temperature and left standstill 3 hours, through 180 ℃ of high-temperature process 1 hour, is cooled to room temperature.Left standstill 2 hours 150 ℃ of high-temperature process 0.5 hour, cooling after being coated with for the second time.Left standstill after being coated with for the third time 1 hour, and handled 2.5 hours for 120 ℃.Cooling gets finished product.
Through being filmed, said method carries out anti-high-current test result such as following table
Claims (8)
1. an anti-big electric current arrester valve piece made is used the glaze film, and this film is the individual layer bicomponent structure, and its substrate is a boron microcrystalline glass in series valve block.On valve block, be coated with glaze, be heating and curing.Obtain anti-big electric current arrester valve piece made glaze coating.
2. the desired anti-big electric current arrester valve piece made glaze of claim 1 is characterized in that the valve block matrix is the zinc oxide that is mixed with the boron microcrystalline glass in series, and it mainly consists of ZnO-SiO
2-B
2O
3Principal crystalline phase is 2ZnOSi0
2Thermal expansivity (20-400 ℃, 30-3510-7/ ℃).Boron microcrystalline glass in series incorporation efficiency is the 5%-3% of basal point amount.
3. the desired matrix material of claim 2; It is characterized in that compact dimensions meets international arrester valve piece made size; We select two types of diameters
for use, and high unity is 25mm.
4. the described anti-big electric current arrester valve piece made glaze of claim 1 is coated with component A; It is characterized in that modified silicone resin by epoxide group; Particularly monocycle oxidative ethane modified silicone resin, bisoxirane modified silicone resin, monocycle Ethylene Oxide modified silicone resin, many epoxy pronane modifications silicones, oxirane epoxy pronane modification silicones wherein their mixture of any one or two kinds form; Its epoxide group consumption is 1～10 part, wherein reaction equation and chemical constitution such as figure below:
5. the described arrester valve piece made glaze of claim 1 coating B component is characterized by that wherein any one or two kinds and above mixture are formed by amine modified organic silicone resin diethylenetriamine modified organic silicone resin, triethylene tetramine modified organic silicone resin, polyamines polyene modified organic silicone resin, diethylamine modified organic silicone resin, triethylamine modified organic silicone resin, dimethylamine modified organic silicone resin, ethylenediamine modified organic silicone resin, propylamine modified silicone resin, polyamide #650, γ aminopropyltriethoxywerene werene (KH550).Its structure is:
6. the coating of the described arrester valve piece made glaze of claim 1 is two parts, and its characteristic is as for the ratio A of A component and B component: B=80～100: 1～4 add little solvent and dispersant composition.
7. the said arrester valve piece made glaze of claim 1 coating process is characterized in that the boron microcrystalline glass in series valve block cylinder scapus external coating technology in claim 2, is the secondary brushing:
One. coating for the first time, placed 0-2 hour, heat treatment 0.5-2 hour, temperature 150-180 ℃/hour.
Two. coating for the second time, placed 1-5 hour, heat treatment 0.5-2 hour, temperature 120-150 ℃/hour; Heat treatment 0.5-3 hour, temperature 150-200 ℃/hour.
8. the described anti-big electric current arrester valve piece made glaze of claim 1; It is characterized by 1 through coating and heat treatment claim 7, respectively through naturally cooling to the annealing process of room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100442648A CN102615913A (en) | 2012-02-24 | 2012-02-24 | Preparation method for novel large-current-resistant arrester valve plate glaze |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100442648A CN102615913A (en) | 2012-02-24 | 2012-02-24 | Preparation method for novel large-current-resistant arrester valve plate glaze |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299741A (en) * | 2014-11-03 | 2015-01-21 | 贵州振华红云电子有限公司 | Method for improving insulation quality of side surface of zinc oxide arrester resistor disc |
| CN110436785A (en) * | 2019-07-06 | 2019-11-12 | 宁波华灏电子商务有限公司 | A kind of preparation method for the glass ceramics that thermal conductivity is good |
-
2012
- 2012-02-24 CN CN2012100442648A patent/CN102615913A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299741A (en) * | 2014-11-03 | 2015-01-21 | 贵州振华红云电子有限公司 | Method for improving insulation quality of side surface of zinc oxide arrester resistor disc |
| CN104299741B (en) * | 2014-11-03 | 2017-05-24 | 贵阳峰荟财智信息咨询有限公司 | Method for improving insulation quality of side surface of zinc oxide arrester resistor disc |
| CN110436785A (en) * | 2019-07-06 | 2019-11-12 | 宁波华灏电子商务有限公司 | A kind of preparation method for the glass ceramics that thermal conductivity is good |
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Application publication date: 20120801 |