CN108531052A - A kind of preparation process of transformer impregnating varnish - Google Patents
A kind of preparation process of transformer impregnating varnish Download PDFInfo
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- CN108531052A CN108531052A CN201810392806.8A CN201810392806A CN108531052A CN 108531052 A CN108531052 A CN 108531052A CN 201810392806 A CN201810392806 A CN 201810392806A CN 108531052 A CN108531052 A CN 108531052A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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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
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
This application discloses a kind of preparation processes of transformer impregnating varnish, include the following steps：Step 1, will unsaturated polyester (UP), epoxy resin, organic siliconresin, vinylite, acrylate, benzoyl peroxide be added reaction kettle in mixed, heating stirring obtains the first mixture；Ceramic powder, nano silicon dioxide, ethylene glycol bisglycidyl ether are added into the first mixture for step 2, continue to heat, stir to get the second mixture；Peroxidating ring the sixth of the twelve Earthly Branches ketone, dimethyl siloxane, trimellitic anhydride is added to the second mixing species in step 3, keeps temperature, stirring, then proceeds by cooling, stirring, obtain transformer impregnating varnish.The preparation process of transformer impregnating varnish of the present invention is reasonable, and the transformer produced impregnating varnish has the advantages that gel time is short, solidification rate is fast, bin stability is high.
Description
Technical field
The present invention relates to transformer technology field more particularly to a kind of preparation processes of transformer impregnating varnish.
Background technology
With China's science and technology and economic rapid development, the demand in Working Life to electric power also rises increasingly, as defeated
Capital equipment transformer in transformer substation system is also required to further be promoted.At home, to adapt to and meeting the market demand,
Many manufacturing firms are to continuously improve product structure to achieve the purpose that enhance product performance；Some producers from foreign countries by introducing
Advanced production equipment and technology are further explored in new process new material etc. and research reach continuous improvement production
The q＆r of product.And just include material, the shape of iron core in the factor for influencing power transformer product performance, winding winding
Mode and insulating materials performance etc..Just there is a kind of impregnating varnish in the insulating materials of transformer, transformer performance is influenced
Very beat.Impregnating varnish fills the gap in insulation system and micropore, impregnated for impregnation motor, electric apparatus coil
Object surface forms continuous paint film, and coil is made to be bonded to a solid entirety.Impregnating varnish divides solvent impregnating varnish and solvent-free
Impregnating varnish two major classes, relatively for solvent impregnating varnish, solvent-free immersion paint mainly has following advantage：Filling rate is high, insulating layer
Air-gap-free, paint film are smooth solid；Solidification fugitive constituent is low, and environmental pollution is small, and process conditions are good；Convenient for automating impregnation technology.
Although the various types of solvent-free insulated impregnating varnish, but still can not meet the requirement of increasing transformer insulated performance.
Currently, the equipment such as transformer, electrical equipment and electrical all develop in the direction towards environmental protection and energy saving, and then require impregnating varnish also towards environmental protection
Energy saving direction develops, therefore proposes increasingly higher demands to the gel and hardening time of impregnating varnish.
Invention content
It is an object of the invention to provide a kind of transformer impregnating varnish, one in above-mentioned prior art problem or more is solved
It is a.
A kind of preparation process of transformer impregnating varnish is provided according to the present invention, wherein
The formula of transformer impregnating varnish include unsaturated polyester (UP), epoxy resin, organic siliconresin, vinylite,
Ceramic powder, nano silicon dioxide, acrylate, ethylene glycol bisglycidyl ether, peroxidating ring the sixth of the twelve Earthly Branches ketone, dimethyl siloxane, partially
Benzenetricarboxylic anhydride, benzoyl peroxide,
The preparation process of the transformer impregnating varnish includes the following steps：
Step 1, by unsaturated polyester (UP), epoxy resin, organic siliconresin, vinylite, acrylate, benzoyl peroxide first
Acyl is added in reaction kettle and is mixed, and then gradually heats, utilizes agitating device with 300-450 revs/min while heating
Rotating speed, after the temperature in reaction kettle reaches 165-170 degrees Celsius, keep it is temperature-resistant, continue to stir using agitating device
1.2-1.5 hour obtains the first mixture；
Step 2, into the first mixture be added ceramic powder, nano silicon dioxide, ethylene glycol bisglycidyl ether, continue into
Row heating, the rotating speed of agitating device is improved to 500-600 revs/min and is stirred, when the temperature in reaction kettle reaches 190-
It after 200 degrees Celsius, keeps temperature-resistant, continues stirring 1.5 hours using agitating device, obtain the second mixture；
Peroxidating ring the sixth of the twelve Earthly Branches ketone, dimethyl siloxane, trimellitic anhydride is added to the second mixing species in step 3, keeps temperature
At 190-200 degrees Celsius, using agitating device with 300-400 revs/min of rotating speed continue rotation 2.5 hours, then start into
Row cooling, until the temperature in reaction kettle is down to room temperature, using agitating device with 60-110 revs/min of turn in temperature-fall period
Speed is mixed slowly, and is cooled to room temperature stopping stirring, is obtained transformer impregnating varnish.
Wherein, the formula of transformer impregnating varnish in parts by weight includes：
70-90 parts of unsaturated polyester (UP)；
10-30 parts of epoxy resin；
20-40 parts of organic siliconresin；
5-15 parts of vinylite；
4-12 parts of ceramic powder；
6-15 parts of nano silicon dioxide；
10-20 parts of acrylate；
5-8 parts of ethylene glycol bisglycidyl ether；
0.2-3 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
7-16 parts of dimethyl siloxane；
12-24 parts of trimellitic anhydride；
2-6 parts of benzoyl peroxide.
Further, the formula of transformer impregnating varnish in parts by weight includes：
75-85 parts of unsaturated polyester (UP)；
15-25 parts of epoxy resin；
25-35 parts of organic siliconresin；
8-12 parts of vinylite；
6-10 parts of ceramic powder；
9-12 parts of nano silicon dioxide；
12-18 parts of acrylate；
6-7 parts of ethylene glycol bisglycidyl ether；
0.8-2 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
9-14 parts of dimethyl siloxane；
15-20 parts of trimellitic anhydride；
3-5 parts of benzoyl peroxide.
Further, the formula of transformer impregnating varnish in parts by weight includes：
80 parts of unsaturated polyester (UP)；
20 parts of epoxy resin；
30 parts of organic siliconresin；
10 parts of vinylite；
8 parts of ceramic powder；
11 parts of nano silicon dioxide；
15 parts of acrylate；
7 parts of ethylene glycol bisglycidyl ether；
1.4 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
12 parts of dimethyl siloxane；
17 parts of trimellitic anhydride；
4 parts of benzoyl peroxide.
Further, the unsaturated polyester (UP) includes that the degree of parts by weight is respectively：
45% phthalic anhydride；
27% propylene glycol；
9% methyl methacrylate；
19% adipic acid.
Further, the unsaturated polyester (UP) is produced by melt-polycondensation.
Further, the preparation method of the nano silicon dioxide includes the following steps：
Step A, silica, water, polyalcohol are mixed, then carries out dispersion grinding operation, obtains mixture 1；
Step B, mixture 1 is heated, when temperature reaches 70-80 DEG C, is kept temperature-resistant so that mixing
Moisture evaporation 45% contained in object obtains mixture 2；
Step C, positive esters of silicon acis is added, is then disperseed, grinding obtains mixture 3；
Step D, water intaking processing is dried to mixture, obtains dry mixture 4；
Step E, mixture 4 is ground using grinding device, is sieved, is less than using the sieve of 80 mesh
In the nano silicon dioxide of 80 mesh.
Further, the ethylene glycol bisglycidyl ether using bicyclic oxygroup ethylene glycol bisglycidyl ether.
The present invention transformer impregnating varnish preparation process it is reasonable, obtained by transformer impregnating varnish can be effective
Shortening gel time so that gel time shortens 62%, improves cured rate, reduces the consumption of the energy, enhances transformation
The stability of the storage of device impregnating varnish.
Specific implementation mode
Embodiment 1
The formula of transformer impregnating varnish in parts by weight includes：
70 parts of unsaturated polyester (UP)；
30 parts of epoxy resin；
40 parts of organic siliconresin；
5 parts of vinylite；
12 parts of ceramic powder；
6 parts of nano silicon dioxide；
10 parts of acrylate；
8 parts of ethylene glycol bisglycidyl ether；
3 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
7 parts of dimethyl siloxane；
24 parts of trimellitic anhydride；
6 parts of benzoyl peroxide.
Embodiment 2
The formula of transformer impregnating varnish in parts by weight includes：
90 parts of unsaturated polyester (UP)；
10 parts of epoxy resin；
20 parts of organic siliconresin；
15 parts of vinylite；
4 parts of ceramic powder；
15 parts of nano silicon dioxide；
20 parts of acrylate；
5 parts of ethylene glycol bisglycidyl ether；
0.2 part of peroxidating ring the sixth of the twelve Earthly Branches ketone；
16 parts of dimethyl siloxane；
12 parts of trimellitic anhydride；
2 parts of benzoyl peroxide.
Embodiment 3
The formula of transformer impregnating varnish in parts by weight includes：75 parts of unsaturated polyester (UP)；
25 parts of epoxy resin；
35 parts of organic siliconresin；
8 parts of vinylite；
10 parts of ceramic powder；
9 parts of nano silicon dioxide；
12 parts of acrylate；
7 parts of ethylene glycol bisglycidyl ether；
2 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
9 parts of dimethyl siloxane；
20 parts of trimellitic anhydride；
5 parts of benzoyl peroxide.
Embodiment 4
The formula of transformer impregnating varnish in parts by weight includes：85 parts of unsaturated polyester (UP)；
15 parts of epoxy resin；
25 parts of organic siliconresin；
12 parts of vinylite；
6 parts of ceramic powder；
12 parts of nano silicon dioxide；
18 parts of acrylate；
6 parts of ethylene glycol bisglycidyl ether；
0.8 part of peroxidating ring the sixth of the twelve Earthly Branches ketone；
14 parts of dimethyl siloxane；
15 parts of trimellitic anhydride；
3 parts of benzoyl peroxide.
Embodiment 5
The formula of transformer impregnating varnish in parts by weight includes：
80 parts of unsaturated polyester (UP)；
20 parts of epoxy resin；
30 parts of organic siliconresin；
10 parts of vinylite；
8 parts of ceramic powder；
11 parts of nano silicon dioxide；
15 parts of acrylate；
7 parts of ethylene glycol bisglycidyl ether；
1.4 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
12 parts of dimethyl siloxane；
17 parts of trimellitic anhydride；
4 parts of benzoyl peroxide.
Unsaturated polyester (UP) described in embodiment 1 to embodiment 5 includes that the degree of parts by weight is respectively：45%
Phthalic anhydride；27% propylene glycol；9% methyl methacrylate；19% adipic acid.Then by melt-polycondensation system
It takes.
The preparation method of nano silicon dioxide described in embodiment 1 to embodiment 5 includes the following steps：
Step A, silica, water, polyalcohol are mixed, then carries out dispersion grinding operation, obtains mixture 1；
Step B, mixture 1 is heated, when temperature reaches 70-80 DEG C, is kept temperature-resistant so that mixing
Moisture evaporation 45% contained in object obtains mixture 2；
Step C, positive esters of silicon acis is added, is then disperseed, grinding obtains mixture 3；
Step D, water intaking processing is dried to mixture, obtains dry mixture 4；
Step E, mixture 4 is ground using grinding device, is sieved, is less than using the sieve of 80 mesh
In the nano silicon dioxide of 80 mesh.
Ethylene glycol bisglycidyl ether described in embodiment 1 to embodiment 5 is double using the ethylene glycol of bicyclic oxygroup
Glycidol ether.
Using the transformer impregnating varnish described in embodiment 1 to embodiment 5 formula according to transformer impregnating varnish system
Standby technique produces the first impregnating varnish, the second impregnating varnish, third impregnating varnish, the 4th impregnating varnish and the 5th impregnating varnish respectively.To
It one impregnating varnish, the second impregnating varnish, third impregnating varnish, the 4th impregnating varnish and the 5th impregnating varnish and can buy on the market general
Logical impregnating varnish carries out the contrast experiment of gel time and bin stability, and the preparation process of wherein transformer impregnating varnish includes
Following steps：
Step 1, by unsaturated polyester (UP), epoxy resin, organic siliconresin, vinylite, acrylate, benzoyl peroxide first
Acyl is added in reaction kettle and is mixed, and then gradually heats, utilizes agitating device with 300-450 revs/min while heating
Rotating speed, after the temperature in reaction kettle reaches 165-170 degrees Celsius, keep it is temperature-resistant, continue to stir using agitating device
1.2-1.5 hour obtains the first mixture；
Step 2, into the first mixture be added ceramic powder, nano silicon dioxide, ethylene glycol bisglycidyl ether, continue into
Row heating, the rotating speed of agitating device is improved to 500-600 revs/min and is stirred, when the temperature in reaction kettle reaches 190-
It after 200 degrees Celsius, keeps temperature-resistant, continues stirring 1.5 hours using agitating device, obtain the second mixture；
Peroxidating ring the sixth of the twelve Earthly Branches ketone, dimethyl siloxane, trimellitic anhydride is added to the second mixing species in step 3, keeps temperature
At 190-200 degrees Celsius, using agitating device with 300-400 revs/min of rotating speed continue rotation 2.5 hours, then start into
Row cooling, until the temperature in reaction kettle is down to room temperature, using agitating device with 60-110 revs/min of turn in temperature-fall period
Speed is mixed slowly, and is cooled to room temperature stopping stirring, is obtained transformer impregnating varnish.
Experimental configuration is as shown in table 1.
Table 1
The above is only five kinds of embodiments of the present invention, it is noted that those skilled in the art,
Without departing from the concept of the premise of the invention, several similar modification and improvement can also be made, these also should be regarded as this
Within the protection domain of invention.
Claims (6)
1. a kind of preparation process of transformer impregnating varnish, which is characterized in that
The formula of transformer impregnating varnish includes unsaturated polyester (UP), epoxy resin, organic siliconresin, vinylite, ceramics
Powder, nano silicon dioxide, acrylate, ethylene glycol bisglycidyl ether, peroxidating ring the sixth of the twelve Earthly Branches ketone, dimethyl siloxane, inclined benzene three
Acid anhydrides, benzoyl peroxide,
The preparation process of the transformer impregnating varnish includes the following steps：
Step 1 adds unsaturated polyester (UP), epoxy resin, organic siliconresin, vinylite, acrylate, benzoyl peroxide
Enter in reaction kettle and mixed, then gradually heated, utilizes agitating device with 300-450 revs/min of turn while heating
Speed keeps temperature-resistant after the temperature in reaction kettle reaches 165-170 degrees Celsius, continues to stir 1.2- using agitating device
1.5 hours, obtain the first mixture；
Ceramic powder, nano silicon dioxide, ethylene glycol bisglycidyl ether are added into the first mixture for step 2, continue to add
The rotating speed of agitating device is improved to 500-600 revs/min and is stirred by heat, is taken the photograph when the temperature in reaction kettle reaches 190-200
It after family name's degree, keeps temperature-resistant, continues stirring 1.5 hours using agitating device, obtain the second mixture；
Peroxidating ring the sixth of the twelve Earthly Branches ketone, dimethyl siloxane, trimellitic anhydride is added to the second mixing species in step 3, maintains the temperature at
190-200 degrees Celsius, rotation 2.5 hours is continued with 300-400 revs/min of rotating speed using agitating device, is then proceeded by
Cooling, until the temperature in reaction kettle is down to room temperature, using agitating device with 60-110 revs/min of rotating speed in temperature-fall period
It is mixed slowly, is cooled to room temperature stopping stirring, obtains transformer impregnating varnish.
2. a kind of preparation process of transformer impregnating varnish according to claim 1, which is characterized in that become in parts by weight
The formula of depressor impregnating varnish includes：
70-90 parts of unsaturated polyester (UP)；
10-30 parts of epoxy resin；
20-40 parts of organic siliconresin；
5-15 parts of vinylite；
4-12 parts of ceramic powder；
6-15 parts of nano silicon dioxide；
10-20 parts of acrylate；
5-8 parts of ethylene glycol bisglycidyl ether；
0.2-3 parts of peroxidating ring the sixth of the twelve Earthly Branches ketone；
7-16 parts of dimethyl siloxane；
12-24 parts of trimellitic anhydride；
2-6 parts of benzoyl peroxide.
3. a kind of preparation process of transformer impregnating varnish according to claim 2, which is characterized in that described unsaturated poly-
Ester includes that the degree of parts by weight is respectively：
45% phthalic anhydride；
27% propylene glycol；
9% methyl methacrylate；
19% adipic acid.
4. a kind of preparation process of transformer impregnating varnish according to claim 3, which is characterized in that described unsaturated poly-
Ester is produced by melt-polycondensation.
5. a kind of preparation process of transformer impregnating varnish according to claim 2, which is characterized in that the nano-silica
The preparation method of SiClx includes the following steps：
Step A, silica, water, polyalcohol are mixed, then carries out dispersion grinding operation, obtains mixture 1；
Step B, mixture 1 is heated, when temperature reaches 70-80 DEG C, is kept temperature-resistant so that in mixture
Contained moisture evaporation 45%, obtains mixture 2；
Step C, positive esters of silicon acis is added, is then disperseed, grinding obtains mixture 3；
Step D, water intaking processing is dried to mixture, obtains dry mixture 4；
Step E, mixture 4 is ground using grinding device, is sieved using the sieve of 80 mesh, obtain being less than or equal to 80
Purpose nano silicon dioxide.
6. a kind of preparation process of transformer impregnating varnish according to claim 2, which is characterized in that the ethylene glycol is double
Glycidol ether using bicyclic oxygroup ethylene glycol bisglycidyl ether.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810392806.8A CN108531052A (en) | 2018-04-27 | 2018-04-27 | A kind of preparation process of transformer impregnating varnish |
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| CN201810392806.8A CN108531052A (en) | 2018-04-27 | 2018-04-27 | A kind of preparation process of transformer impregnating varnish |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897436A (en) * | 2014-03-30 | 2014-07-02 | 苏州奈微纳米科技有限公司 | Method for preparing nano silicon dioxide |
| CN104592870A (en) * | 2015-02-05 | 2015-05-06 | 南通市海王电气有限公司 | Preparation process of impregnating varnish with high storage stability for transformer |
| CN105199453A (en) * | 2015-10-23 | 2015-12-30 | 国网山东省电力公司临沂供电公司 | Insulation coating material for electric power device |
-
2018
- 2018-04-27 CN CN201810392806.8A patent/CN108531052A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897436A (en) * | 2014-03-30 | 2014-07-02 | 苏州奈微纳米科技有限公司 | Method for preparing nano silicon dioxide |
| CN104592870A (en) * | 2015-02-05 | 2015-05-06 | 南通市海王电气有限公司 | Preparation process of impregnating varnish with high storage stability for transformer |
| CN105199453A (en) * | 2015-10-23 | 2015-12-30 | 国网山东省电力公司临沂供电公司 | Insulation coating material for electric power device |
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Application publication date: 20180914 |