CN106883647A - A kind of environment friendly insulating coating for transformer and preparation method thereof - Google Patents
A kind of environment friendly insulating coating for transformer and preparation method thereof Download PDFInfo
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- CN106883647A CN106883647A CN201710180945.XA CN201710180945A CN106883647A CN 106883647 A CN106883647 A CN 106883647A CN 201710180945 A CN201710180945 A CN 201710180945A CN 106883647 A CN106883647 A CN 106883647A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
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Abstract
The invention discloses a kind of environment friendly insulating coating for transformer and preparation method thereof, the insulating coating includes the raw material of following weight portion：20 45 parts of ferromagnetic oxide powder, 6 15 parts of hollow glass microballoon, 18 parts of hydroxypropyl methyl cellulose, 3 10 parts of aluminium-hydroxide powder, 0.6 2.5 parts of bentonite, 25 parts of sodium alginate, 0.3 1.8 parts of thermoplastic resin, 60 80 parts of solvent.Preparation method is modified using sodium alginate with ferromagnetic oxide powder as main component to it, hollow glass microballoon combination hydroxypropyl methyl cellulose, and bentonite and thermoplastic resin are filled.Insulating coating anticorrosion of the invention, high temperature resistant, good insulation preformance reduce low frequency magnetic field radiation, are suitable as the coating of transformer.
Description
Technical field
The present invention relates to transformer coatings art, and in particular to a kind of environment friendly insulating coating and its preparation for transformer
Method.
Background technology
When transformer leads to upper alternating current, alternating magnetic field can be produced on electric steel disc, this alternating magnetic field can be in electric steel disc week
Generation alternating electric field is enclosed, the electric field of this alternation can produce alternating current inside electric steel disc, that is, be vortexed.In order to avoid or
Vortex is reduced, aborning, very thin and mutual insulating electrical sheet is superimposed, form an electricity for intensive insulation
Steel disc.When transformer is using certain time limit is reached, the insulating barrier on electric steel disc surface can be gradually aging, the insulating properties between electric steel disc
Can be gradually reduced, be to employ a monoblock equivalent to iron core if the insulation on electric steel disc surface is destroyed completely, eddy-current loss meeting
What is become is very big, occurs larger eddy current in iron core, can not only cause eddy-current loss to waste electric power, and causes iron core to generate heat,
Serious may burn red, or even melt, it follows that the electric current increase of coil, so that burning.Whole transformer temperature
Rise, transformer because above-mentioned overtemperature failure and caused by explode.
The traditional insulator materials for using at present mainly have chromate and phosphatic inorganic material, also use inorganic material
The mixed coating material of material, organic material composition.Although the heat resistance of these materials has reached the intensification requirement of transformer,
As transformer is long-term when oepration at full load even short-term overload operation, the coil in transformer is always maintained at height
Temperature, the insulating barrier of steel disc is influenceed by high temperature in iron core, can slowly peel off burn, cause insulation effect to decline, burn electric wire and
Transformer.Therefore, transformer industry needs a kind of new coating of environmentally friendly good insulation preformance to extend the service life of transformer.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of environmental protection insulation for transformer is applied
Layer and preparation method thereof, each composition safety and environmental protection of the insulating coating, anticorrosion, high temperature resistant, not only good insulation preformance, also reduces
Low frequency magnetic field is radiated.
The present invention solves technical problem and adopts the following technical scheme that：
The invention provides a kind of environment friendly insulating coating for transformer, including following weight portion raw material：Ferromagnetic oxide powder
20-45 parts, hollow glass microballoon 6-15 parts, hydroxypropyl methyl cellulose 1-8 parts, aluminium-hydroxide powder 3-10 parts, bentonite
0.6-2.5 parts, sodium alginate 2-5 parts, thermoplastic resin 0.3-1.8 parts, solvent 60-80 parts.
Preferably, including following weight portion raw material：36 parts of ferromagnetic oxide powder, 8 parts of hollow glass microballoon, hydroxypropyl methyl
5 parts of cellulose, 8 parts of aluminium-hydroxide powder, 1.6 parts of bentonite, 5 parts of sodium alginate, 0.8 part of thermoplastic resin, 72 parts of solvent.
Preferably, the thermoplastic resin is selected from Corvic, vinyl acetate resin, ABS resin, acryl tree
One kind or any two or more combination in fat, polyvinyl resin, acrylic resin.
Preferably, the solvent is selected from one kind or any two or more group in ethanol, methyl alcohol, acetonitrile, ethyl acetate
Close.
The preparation method of the above-mentioned environment friendly insulating coating for transformer, comprises the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 80-90 DEG C, with the speed of 400-600r/min
Degree stirring, is slowly added to the solution that sodium alginate and solvent are pre-mixed, and 20-25min is reacted after completion of dropping, moves into ultrasound
Ultrasound 10-15min in ripple cleaning device, then filtration under diminished pressure takes filter cake, and filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 150-160 DEG C makes it be in thick slurry shape, is warming up to 250-260 DEG C, after high-speed stirred is reacted 1-2 hours
Obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 260-
280 DEG C of coolings that discharge after banburying 4-6 hours obtain the insulating coating.
Preferably, the step（1）The solution that sodium alginate and solvent are pre-mixed ensures to be dripped in 10-15min
Finish.
Preferably, the step（1）The frequency range of ultrasound is 40-60KHz.
Preferably, the step（2）The rotating speed of high-speed stirred is 1200-1300r/min.
Compared with prior art, the present invention has following beneficial effect：
（1）Environment friendly insulating coating of the invention uses polymolecularity, the alginic acid of stability with ferromagnetic oxide powder as main component
Sodium is modified to it, improves magnetic screening action, reduces low frequency magnetic field radiation；Hollow glass microballoon be a kind of light weight, absolutely
The packing material of edge, is well combined the hydroxypropyl methyl cellulose of adhesion, heat-resistant fireproof, to bentonite and thermoplastic resin
The fire retardant insulating function admirable of coating is caused after being filled.
（2）The preparation of environment friendly insulating coating of the present invention is generated using various safety and environmental protection compositions by chemical method, coating
Anticorrosion, high temperature resistant, good insulation preformance reduce the insulating coating of low frequency magnetic field radiation, are suitable as the coating of transformer.
Specific embodiment
Invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1.
The environment friendly insulating coating for transformer of the present embodiment, including following weight portion raw material：
36 parts of ferromagnetic oxide powder；
8 parts of hollow glass microballoon；
5 parts of hydroxypropyl methyl cellulose；
8 parts of aluminium-hydroxide powder；
1.6 parts of bentonite；
5 parts of sodium alginate；
0.8 part of vinyl acetate resin；
72 parts of ethanol.
The preparation method of the above-mentioned environment friendly insulating coating for transformer, comprises the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 80 DEG C, stirred with the speed of 600r/min,
It is slowly added to the solution that sodium alginate and solvent are pre-mixed, it is ensured that in 10-15min completion of dropping, is reacted after completion of dropping
20-25min, moves into ultrasound 10-15min in ultrasonic washing instrument, and the frequency range of ultrasound is 40-60KHz, then filtration under diminished pressure takes
Filter cake, filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 150 DEG C makes it be in thick slurry shape, is warming up to 250 DEG C, and the reaction 2 of 1200-1300r/min high-speed stirreds is small
When after obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 260
DEG C banburying cooling that discharged after 6 hours obtains the insulating coating.
Embodiment 2.
The environment friendly insulating coating for transformer of the present embodiment, including following weight portion raw material：
20 parts of ferromagnetic oxide powder；
12 parts of hollow glass microballoon；
3 parts of hydroxypropyl methyl cellulose；
6 parts of aluminium-hydroxide powder；
0.9 part of bentonite；
3 parts of sodium alginate；
1 part of Corvic；
65 parts of methyl alcohol.
The preparation method of the above-mentioned environment friendly insulating coating for transformer, comprises the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 85 DEG C, stirred with the speed of 600r/min,
It is slowly added to the solution that sodium alginate and solvent are pre-mixed, it is ensured that in 10-15min completion of dropping, is reacted after completion of dropping
20-25min, moves into ultrasound 10-15min in ultrasonic washing instrument, and the frequency range of ultrasound is 40-60KHz, then filtration under diminished pressure takes
Filter cake, filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 155 DEG C makes it be in thick slurry shape, is warming up to 252 DEG C, and the reaction 2 of 1200-1300r/min high-speed stirreds is small
When after obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 280
DEG C banburying cooling that discharged after 4 hours obtains the insulating coating.
Embodiment 3.
The environment friendly insulating coating for transformer of the present embodiment, including following weight portion raw material：
35 parts of ferromagnetic oxide powder；
10 parts of hollow glass microballoon；
1 part of hydroxypropyl methyl cellulose；
5 parts of aluminium-hydroxide powder；
0.9 part of bentonite；
3 parts of sodium alginate；
1 part of acryl resin；
65 parts of acetonitrile.
The preparation method of the above-mentioned environment friendly insulating coating for transformer, comprises the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 90 DEG C, stirred with the speed of 500r/min,
It is slowly added to the solution that sodium alginate and solvent are pre-mixed, it is ensured that in 10-15min completion of dropping, is reacted after completion of dropping
20-25min, moves into ultrasound 10-15min in ultrasonic washing instrument, and the frequency range of ultrasound is 40-60KHz, then filtration under diminished pressure takes
Filter cake, filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 160 DEG C makes it be in thick slurry shape, is warming up to 255 DEG C, and the reaction 2 of 1200-1300r/min high-speed stirreds is small
When after obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 280
DEG C banburying cooling that discharged after 4 hours obtains the insulating coating.
Embodiment 4.
The environment friendly insulating coating for transformer of the present embodiment, including following weight portion raw material：
40 parts of ferromagnetic oxide powder；
12 parts of hollow glass microballoon；
6 parts of hydroxypropyl methyl cellulose；
6 parts of aluminium-hydroxide powder；
1.8 parts of bentonite；
4 parts of sodium alginate；
1.2 parts of polyvinyl resin；
80 parts of ethyl acetate.
The preparation method of the above-mentioned environment friendly insulating coating for transformer, comprises the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 80 DEG C, stirred with the speed of 600r/min,
It is slowly added to the solution that sodium alginate and solvent are pre-mixed, it is ensured that in 10-15min completion of dropping, is reacted after completion of dropping
20-25min, moves into ultrasound 10-15min in ultrasonic washing instrument, and the frequency range of ultrasound is 40-60KHz, then filtration under diminished pressure takes
Filter cake, filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 150 DEG C makes it be in thick slurry shape, is warming up to 260 DEG C, and the reaction 2 of 1200-1300r/min high-speed stirreds is small
When after obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 260
DEG C banburying cooling that discharged after 6 hours obtains the insulating coating.
Embodiment 5.
The environment friendly insulating coating for transformer of the present embodiment, including following weight portion raw material：
45 parts of ferromagnetic oxide powder；
15 parts of hollow glass microballoon；
8 parts of hydroxypropyl methyl cellulose；
10 parts of aluminium-hydroxide powder；
2.5 parts of bentonite；
5 parts of sodium alginate；
1.8 parts of acrylic resin；
72 parts of ethanol.
The preparation method of the above-mentioned environment friendly insulating coating for transformer, comprises the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 85 DEG C, stirred with the speed of 600r/min,
It is slowly added to the solution that sodium alginate and solvent are pre-mixed, it is ensured that in 10-15min completion of dropping, is reacted after completion of dropping
20-25min, moves into ultrasound 10-15min in ultrasonic washing instrument, and the frequency range of ultrasound is 40-60KHz, then filtration under diminished pressure takes
Filter cake, filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 155 DEG C makes it be in thick slurry shape, is warming up to 252 DEG C, and the reaction 2 of 1200-1300r/min high-speed stirreds is small
When after obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 270
DEG C banburying cooling that discharged after 5 hours obtains the insulating coating.
Insulating coating of the invention generates anticorrosion, high temperature resistant by various safety and environmental protection compositions by chemical method, absolutely
Edge performance is good, reduces the insulating coating of low frequency magnetic field radiation, is suitable as the coating of transformer.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of environment friendly insulating coating for transformer, it is characterised in that the raw material including following weight portion：Ferromagnetic oxide powder
20-45 parts, hollow glass microballoon 6-15 parts, hydroxypropyl methyl cellulose 1-8 parts, aluminium-hydroxide powder 3-10 parts, bentonite
0.6-2.5 parts, sodium alginate 2-5 parts, thermoplastic resin 0.3-1.8 parts, solvent 60-80 parts.
2. the environment friendly insulating coating for transformer according to claim 1, it is characterised in that including following weight portion
Raw material：36 parts of ferromagnetic oxide powder, 8 parts of hollow glass microballoon, 5 parts of hydroxypropyl methyl cellulose, 8 parts of aluminium-hydroxide powder, swelling
1.6 parts of soil, 5 parts of sodium alginate, 0.8 part of thermoplastic resin, 72 parts of solvent.
3. the environment friendly insulating coating for transformer according to claim 1, it is characterised in that the thermoplastic resin choosing
From in Corvic, vinyl acetate resin, ABS resin, acryl resin, polyvinyl resin, acrylic resin one
Plant or any two or more combination.
4. the environment friendly insulating coating for transformer according to claim 1, it is characterised in that the solvent is selected from second
One kind or any two or more combination in alcohol, methyl alcohol, acetonitrile, ethyl acetate.
5. the preparation method of the environment friendly insulating coating for transformer according to claim 1-4 any one, its feature
It is to comprise the following steps：
（1）Ferromagnetic oxide powder is added in reactor according to weight portion, is warming up to 80-90 DEG C, with the speed of 400-600r/min
Degree stirring, is slowly added to the solution that sodium alginate and solvent are pre-mixed, and 20-25min is reacted after completion of dropping, moves into ultrasound
Ultrasound 10-15min in ripple cleaning device, then filtration under diminished pressure takes filter cake, and filter cake is the ferromagnetic oxide powder by being modified；
（2）Take hollow glass microballoon, hydroxypropyl methyl cellulose, aluminium-hydroxide powder, bentonite, thermoplastic resin and be added to height
In pressure kettle, being warming up to 150-160 DEG C makes it be in thick slurry shape, is warming up to 250-260 DEG C, after high-speed stirred is reacted 1-2 hours
Obtain reaction solution A；
（3）Modified ferromagnetic oxide powder, reaction solution A mixing and stirring at normal temperatures are added in banbury, be warming up to 260-
280 DEG C of coolings that discharge after banburying 4-6 hours obtain the insulating coating.
6. the preparation method of the environment friendly insulating coating for transformer according to claim 5, it is characterised in that the step
Suddenly（1）The solution that sodium alginate and solvent are pre-mixed is ensured in 10-15min completion of dropping.
7. the preparation method of the environment friendly insulating coating for transformer according to claim 5, it is characterised in that the step
Suddenly（1）The frequency range of ultrasound is 40-60KHz.
8. the preparation method of the environment friendly insulating coating for transformer according to claim 5, it is characterised in that the step
Suddenly（2）The rotating speed of high-speed stirred is 1200-1300r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710180945.XA CN106883647A (en) | 2017-03-24 | 2017-03-24 | A kind of environment friendly insulating coating for transformer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710180945.XA CN106883647A (en) | 2017-03-24 | 2017-03-24 | A kind of environment friendly insulating coating for transformer and preparation method thereof |
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| CN106883647A true CN106883647A (en) | 2017-06-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254236A (en) * | 2017-06-29 | 2017-10-17 | 合肥达户电线电缆科技有限公司 | Cable insulation coating and its production technology are frozen in a kind of anti-freezing |
| CN108641556A (en) * | 2018-05-07 | 2018-10-12 | 合肥羿振电力设备有限公司 | A kind of power equipment protective paint of heat-resisting crack resistence |
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| JP2002249987A (en) * | 2001-02-20 | 2002-09-06 | Nicca Chemical Co Ltd | Method for producing porous structure |
| CN101707124A (en) * | 2009-11-27 | 2010-05-12 | 蔡建林 | Shielding coating of low-frequency transformer |
| CN103275591A (en) * | 2013-05-23 | 2013-09-04 | 浙江原邦材料科技有限公司 | 0.6-18GHz-frequency-band microwave-absorbing/epoxy anti-electromagnetic interference coating material and preparation method thereof |
| CN105199486A (en) * | 2015-10-13 | 2015-12-30 | 谢军 | Domestic fireproof and environment-friendly coating and preparation method thereof |
| CN105655091A (en) * | 2014-10-23 | 2016-06-08 | 国家电网公司 | Low frequency transformer shielding layer |
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2017
- 2017-03-24 CN CN201710180945.XA patent/CN106883647A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002249987A (en) * | 2001-02-20 | 2002-09-06 | Nicca Chemical Co Ltd | Method for producing porous structure |
| CN101707124A (en) * | 2009-11-27 | 2010-05-12 | 蔡建林 | Shielding coating of low-frequency transformer |
| CN103275591A (en) * | 2013-05-23 | 2013-09-04 | 浙江原邦材料科技有限公司 | 0.6-18GHz-frequency-band microwave-absorbing/epoxy anti-electromagnetic interference coating material and preparation method thereof |
| CN105655091A (en) * | 2014-10-23 | 2016-06-08 | 国家电网公司 | Low frequency transformer shielding layer |
| CN105199486A (en) * | 2015-10-13 | 2015-12-30 | 谢军 | Domestic fireproof and environment-friendly coating and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254236A (en) * | 2017-06-29 | 2017-10-17 | 合肥达户电线电缆科技有限公司 | Cable insulation coating and its production technology are frozen in a kind of anti-freezing |
| CN108641556A (en) * | 2018-05-07 | 2018-10-12 | 合肥羿振电力设备有限公司 | A kind of power equipment protective paint of heat-resisting crack resistence |
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Application publication date: 20170623 |
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