CN108359222A - A kind of preparation method of the insulating materials of for transformer - Google Patents
A kind of preparation method of the insulating materials of for transformer Download PDFInfo
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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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
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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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
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/04—Alginic acid; Derivatives thereof
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
Abstract
The present invention provides a kind of preparation method of the insulating materials of for transformer, includes the following steps：A, modified montmorillonoid, titanium dioxide, modified micaceous powder and titanium dioxide are mixed, dry, ball milling, obtains powder；B, lubricant and antioxidant are added into powder, heats and stirs, be uniformly dispersed, obtain mixture one；C, modified epoxy resin emulsion, propylene glycol alginate, polyaminoester emulsion, cellulose base-material and toughener are mixed, re-ultrasonic dispersion obtains mixture two；D, mixture one, mixture two, sodium carboxymethylcellulose and sodium metasilicate are mixed, is imported in vulcanizing press, heating extrusion forming.The preparation method of the present invention is simple, and the performances such as heat conduction, weather-proof, high temperature resistant are good, and for transformer has a good application prospect.
Description
Technical field
The invention belongs to insulating materials technical fields, and in particular to a kind of preparation side of the insulating materials of for transformer
Method.
Background technology
Insulating materials is also known as dielectric, is the material that resistivity is high, conductive capability is low.Insulating materials can be used for that electrification is isolated
Or the conductor of different potentials, so that electric current is circulated in certain direction.In power transformer product, insulating materials also play heat dissipation, cooling,
Support, arc extinguishing, improves the effects that electric potential gradient, moisture-proof, mould proof and protection conductor at fixation.
Insulating materials is widely used as the insulating materials of the equipment such as motor, cable, capacitor and transformer, and lamination system
The main composition material of the insulating materials such as product, composite material and preimpregnation material.Due to the specific use of insulating materials, it is desirable that it must
Must have some characteristics for being different from other materials, include mainly mechanical performance, electric property and thermal stability.And due to each
The difference of class electrical equipment use environment, as run under wet heat condition motor, chemical plant often in contact with high concentration corrosivity
The motor of chemical mediator, the motor etc. run in the case where there is radioactive radiation, it is desirable that insulating materials will also have preferable physical chemistry
Performance and environmental suitability.
In recent years, with the fast development of the industries such as China's electric power, electrical, electronics, household electrical appliances and communication, people are to transformer
Requirement it is higher and higher.The quality of the mechanical performance of insulating materials directly decides the service life of transformer.Real transformer
In, insulating materials is acted on by high electrical-field stressing for a long time, once breakdown, which occurs, will lead to transformer fault.As being promoted
The electric property of insulating materials can save the usage amount of insulating materials, extend the working life of insulating materials, and then limit and become
The volume and core loss of depressor, therefore, it is necessary to study a kind of better insulating materials, to improve the deficiencies in the prior art.
Invention content
The object of the present invention is to provide a kind of preparation method of the insulating materials of for transformer, preparation methods of the invention
Simply, the performances such as heat conduction, weather-proof, high temperature resistant are good, and for transformer has a good application prospect.
The present invention provides the following technical solutions：
A kind of preparation method of the insulating materials of for transformer, including following preparation process：
A, modified montmorillonoid, titanium dioxide, modified micaceous powder and titanium dioxide are mixed, the dry 10-15min at 60-80 DEG C, then
It imports in ball mill, ball milling 3-5h obtains powder；
B, lubricant and antioxidant are added into powder, is placed in reaction kettle, is heated at 220-260 DEG C and stir 20-
30min after being uniformly dispersed, is cooled to 100-120 DEG C, obtains mixture one；
C, modified epoxy resin emulsion, propylene glycol alginate, polyaminoester emulsion, cellulose base-material and toughener are mixed, is led
Enter in batch mixer, 20-35min is stirred under the rotating speed of 350-460r/min, reuses ultrasonic disperse 10-15min, mixed
Object two；
D, mixture one, mixture two, sodium carboxymethylcellulose and sodium metasilicate are mixed, is imported in vulcanizing press, heating adds
It is molded, you can to obtain finished product.
Preferably, the preparation method of the modified montmorillonoid of the step a is：Nanometer sodium-based montmorillonite is added to quality point
Number is to stir 15-25min, filtering in the sulfuric acid solution of 5-10%, and be washed with deionized to neutrality, is filtered, drying, then set
It is to stir 2-4h under 60-70 DEG C of heating water bath in 30-40% ethanol solutions, be then added dropwise to metatitanic acid fourth in mass fraction
Ester, insulation reaction 1-2h, after dry, you can obtain modified montmorillonoid.
Preferably, the preparation method of the modified micaceous powder of the step a is：Silane coupling agent is added to ethanol solution
In, for heating water bath to 55-70 DEG C, it is 5-6 that ethanedioic acid, which is added dropwise, and adjusts pH value, hydrolyzes 1-1.5h, mica sheet is added and impregnates 1-2h, so
Supersound washing mica sheet 10-15min afterwards, then mica sheet 20-30min is impregnated with deionized water, mica sheet is finally placed in baking oven
In, dry 1-2h, grinding, you can obtain modified micaceous powder at 80-90 DEG C.
Preferably, the lubricant of the step b is that the double stearoylketene amine of ethylene group, glyceryl monostearate and three stearic acid are sweet
The mixing of grease.
Preferably, the antioxidant of the step b is any in antioxidant 1010, antioxidant 2246 and triphenyl phosphite
Kind or several mixing.
Preferably, the preparation method of the modified epoxy resin emulsion of the step c is：Glycine is watered dissolving, is added
Silane coupling agent, emulsifier, dodecyl sodium sulfate and epoxy resin are placed at 80-90 DEG C and are slowly stirred reaction 2-3h, then adds
Enter stalk fibre and hollow glass microbead continues to stir 10-15min, sodium hydroxide solution adjusting pH value is added and is in neutrality, then uses
High-shearing dispersion emulsifying machine is emulsified, you can obtains modified epoxy resin emulsion.
Preferably, the preparation method of the cellulose base-material of the step c is：Cellulose fibre is added to carboxymethyl cellulose
It in the aqueous solution of plain sodium, heated at 50-65 DEG C, stir 15-20min, obtain mixed liquor, nanometer diatom is added into mixed liquor
Soil, nano-titanium dioxide, sodium metasilicate and melamine are uniformly mixed, and are beaten and are dehydrated, you can obtain cellulosic-based material.
Preferably, the toughener of the step c be Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer,
Any one of Methyl Methacrylate-Butadiene-Styrene Copolymer and ABS- maleic anhydride graft copolymers are several
Mixing.
The beneficial effects of the invention are as follows：
The preparation method of the present invention is simple, and the performances such as heat conduction, weather-proof, high temperature resistant are good, before for transformer has good application
Scape, the present invention in modified montmorillonoid material, compatibility is good, and binding force is strong.
The present invention is significantly improved, be can be applied to due to being added to mica, electrical insulation capability and flame retardant property
The occasions such as the control panel of the various electric appliances such as automobile, electric switch, transformer case.
Cellulosic-based material in the present invention is added with heat stabilizer composite parts, to protect insulating materials to make its degradation
Slow down, the heat stabilizer ingredient nano-titanium dioxide and nano diatomite in cellulosic-based material of the invention have big ratio table
Area, can play the role of the insulation performance of insulating materials preferable, and cellulosic-based material also improves the high-strength, high of insulating paper
It is tough, wear-resisting, the performances such as not easy to crack.
Specific implementation mode
Embodiment 1
A kind of preparation method of the insulating materials of for transformer, including following preparation process：
A, modified montmorillonoid, titanium dioxide, modified micaceous powder and titanium dioxide are mixed, the dry 15min at 60 DEG C, then imports ball
In grinding machine, ball milling 3h obtains powder；
B, lubricant and antioxidant are added into powder, is placed in reaction kettle, 20min is heated and stirred at 260 DEG C, dispersion is equal
After even, 120 DEG C are cooled to, obtains mixture one；
C, modified epoxy resin emulsion, propylene glycol alginate, polyaminoester emulsion, cellulose base-material and toughener are mixed, is led
Enter in batch mixer, 25min is stirred under the rotating speed of 350r/min, reuse ultrasonic disperse 15min, obtains mixture two；
D, mixture one, mixture two, sodium carboxymethylcellulose and sodium metasilicate are mixed, is imported in vulcanizing press, heating adds
It is molded, you can to obtain finished product.
The preparation method of the modified montmorillonoid of step a is：Nanometer sodium-based montmorillonite is added to the sulphur that mass fraction is 10%
In acid solution, 25min, filtering are stirred, and is washed with deionized to neutrality, is filtered, drying, then it is 30% to be placed in mass fraction
In ethanol solution, 2h is stirred under 60 DEG C of heating water bath, is then added dropwise to butyl titanate, insulation reaction 2h, after dry, you can
Obtain modified montmorillonoid.
The preparation method of the modified micaceous powder of step a is：Silane coupling agent is added in ethanol solution, heating water bath is extremely
70 DEG C, it is 5 that ethanedioic acid, which is added dropwise, and adjusts pH value, hydrolyzes 1h, mica sheet is added and impregnates 2h, then supersound washing mica sheet 10min, then
Mica sheet 30min is impregnated with deionized water, finally mica sheet is placed in baking oven, dry 1h, grinding, you can obtain at 90 DEG C
Modified micaceous powder.
The lubricant of step b is the mixing of ethylene group double stearoylketene amine, glyceryl monostearate and glyceryl tristearate.
The antioxidant of step b is the mixing of antioxidant 1010, antioxidant 2246 and triphenyl phosphite.
The preparation method of the modified epoxy resin emulsion of step c is：Glycine is watered dissolving, be added silane coupling agent,
Emulsifier, dodecyl sodium sulfate and epoxy resin are placed at 80 DEG C and are slowly stirred reaction 3h, adds stalk fibre and hollow
Glass microballoon continue stir 15min, be added sodium hydroxide solution adjust pH value be in neutrality, then with high-shearing dispersion emulsifying machine by its
Emulsification, you can obtain modified epoxy resin emulsion.
The preparation method of the cellulose base-material of step c is：Cellulose fibre is added to the water-soluble of sodium carboxymethylcellulose
In liquid, at 55 DEG C heat, stir 15min, obtain mixed liquor, into mixed liquor be added nano diatomite, nano-titanium dioxide,
Sodium metasilicate and melamine are uniformly mixed, and are beaten and are dehydrated, you can obtain cellulosic-based material.
The toughener of step c is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer, methacrylic acid
The mixing of methyl esters-butadiene-styrene copolymer and ABS- maleic anhydride graft copolymers.
Embodiment 2
A kind of preparation method of the insulating materials of for transformer, including following preparation process：
A, modified montmorillonoid, titanium dioxide, modified micaceous powder and titanium dioxide are mixed, the dry 10min at 60 DEG C, then imports ball
In grinding machine, ball milling 3h obtains powder；
B, lubricant and antioxidant are added into powder, is placed in reaction kettle, 20min is heated and stirred at 220 DEG C, dispersion is equal
After even, 100 DEG C are cooled to, obtains mixture one；
C, modified epoxy resin emulsion, propylene glycol alginate, polyaminoester emulsion, cellulose base-material and toughener are mixed, is led
Enter in batch mixer, 20min is stirred under the rotating speed of 350r/min, reuse ultrasonic disperse 10min, obtains mixture two；
D, mixture one, mixture two, sodium carboxymethylcellulose and sodium metasilicate are mixed, is imported in vulcanizing press, heating adds
It is molded, you can to obtain finished product.
The preparation method of the modified montmorillonoid of step a is：Nanometer sodium-based montmorillonite is added to the sulphur that mass fraction is 5%
In acid solution, 15min, filtering are stirred, and is washed with deionized to neutrality, is filtered, drying, then it is 30% to be placed in mass fraction
In ethanol solution, 2h is stirred under 60 DEG C of heating water bath, is then added dropwise to butyl titanate, insulation reaction 1h, after dry, you can
Obtain modified montmorillonoid.
The preparation method of the modified micaceous powder of step a is：Silane coupling agent is added in ethanol solution, heating water bath is extremely
55 DEG C, it is 5 that ethanedioic acid, which is added dropwise, and adjusts pH value, hydrolyzes 1h, mica sheet is added and impregnates 1h, then supersound washing mica sheet 15min, then
Mica sheet 20min is impregnated with deionized water, finally mica sheet is placed in baking oven, dry 1h, grinding, you can obtain at 80 DEG C
Modified micaceous powder.
The lubricant of step b is the mixing of ethylene group double stearoylketene amine, glyceryl monostearate and glyceryl tristearate.
The antioxidant of step b is the mixing of antioxidant 1010, antioxidant 2246 and triphenyl phosphite.
The preparation method of the modified epoxy resin emulsion of step c is：Glycine is watered dissolving, be added silane coupling agent,
Emulsifier, dodecyl sodium sulfate and epoxy resin are placed at 80 DEG C and are slowly stirred reaction 2h, adds stalk fibre and hollow
Glass microballoon continue stir 10min, be added sodium hydroxide solution adjust pH value be in neutrality, then with high-shearing dispersion emulsifying machine by its
Emulsification, you can obtain modified epoxy resin emulsion.
The preparation method of the cellulose base-material of step c is：Cellulose fibre is added to the water-soluble of sodium carboxymethylcellulose
In liquid, at 50 DEG C heat, stir 15min, obtain mixed liquor, into mixed liquor be added nano diatomite, nano-titanium dioxide,
Sodium metasilicate and melamine are uniformly mixed, and are beaten and are dehydrated, you can obtain cellulosic-based material.
The toughener of step c is Methyl Methacrylate-Butadiene-Styrene Copolymer.
Embodiment 3
A kind of preparation method of the insulating materials of for transformer, including following preparation process：
A, modified montmorillonoid, titanium dioxide, modified micaceous powder and titanium dioxide are mixed, the dry 15min at 80 DEG C, then imports ball
In grinding machine, ball milling 5h obtains powder；
B, lubricant and antioxidant are added into powder, is placed in reaction kettle, 30min is heated and stirred at 260 DEG C, dispersion is equal
After even, 120 DEG C are cooled to, obtains mixture one；
C, modified epoxy resin emulsion, propylene glycol alginate, polyaminoester emulsion, cellulose base-material and toughener are mixed, is led
Enter in batch mixer, 35min is stirred under the rotating speed of 460r/min, reuse ultrasonic disperse 15min, obtains mixture two；
D, mixture one, mixture two, sodium carboxymethylcellulose and sodium metasilicate are mixed, is imported in vulcanizing press, heating adds
It is molded, you can to obtain finished product.
The preparation method of the modified montmorillonoid of step a is：Nanometer sodium-based montmorillonite is added to the sulphur that mass fraction is 10%
In acid solution, 25min, filtering are stirred, and is washed with deionized to neutrality, is filtered, drying, then it is 40% to be placed in mass fraction
In ethanol solution, 4h is stirred under 70 DEG C of heating water bath, is then added dropwise to butyl titanate, insulation reaction 2h, after dry, you can
Obtain modified montmorillonoid.
The preparation method of the modified micaceous powder of step a is：Silane coupling agent is added in ethanol solution, heating water bath is extremely
70 DEG C, it is 6 that ethanedioic acid, which is added dropwise, and adjusts pH value, hydrolyzes 1.5h, mica sheet is added and impregnates 2h, then supersound washing mica sheet 15min,
Mica sheet 30min is impregnated with deionized water again, finally mica sheet is placed in baking oven, dry 2h, grinding at 90 DEG C, you can
To modified micaceous powder.
The lubricant of step b is the mixing of ethylene group double stearoylketene amine, glyceryl monostearate and glyceryl tristearate.
The antioxidant of step b is the mixing of antioxidant 1010, antioxidant 2246 and triphenyl phosphite.
The preparation method of the modified epoxy resin emulsion of step c is：Glycine is watered dissolving, be added silane coupling agent,
Emulsifier, dodecyl sodium sulfate and epoxy resin are placed at 90 DEG C and are slowly stirred reaction 3h, adds stalk fibre and hollow
Glass microballoon continue stir 15min, be added sodium hydroxide solution adjust pH value be in neutrality, then with high-shearing dispersion emulsifying machine by its
Emulsification, you can obtain modified epoxy resin emulsion.
The preparation method of the cellulose base-material of step c is：Cellulose fibre is added to the water-soluble of sodium carboxymethylcellulose
In liquid, at 65 DEG C heat, stir 20min, obtain mixed liquor, into mixed liquor be added nano diatomite, nano-titanium dioxide,
Sodium metasilicate and melamine are uniformly mixed, and are beaten and are dehydrated, you can obtain cellulosic-based material.
The toughener of step c is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer, methacrylic acid
The mixing of methyl esters-butadiene-styrene copolymer and ABS- maleic anhydride graft copolymers.
Finished product prepared by above example is detected, following detection data is obtained：
Table one：
| Project | Density（g/cm3） | Tensile strength（MPa） | Shrinking percentage（%） | Elongation percentage（%） | Dielectric constant |
| Embodiment 1 | 1.12 | 98 | 0.2 | 13 | 1.12 |
| Embodiment 2 | 1.11 | 102 | 0.15 | 12 | 1.15 |
| Embodiment 3 | 1.12 | 103 | 0.12 | 12 | 1.11 |
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to the foregoing embodiments
Invention is explained in detail, for those skilled in the art, still can be to foregoing embodiments institute
The technical solution of record is modified or equivalent replacement of some of the technical features.It is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of preparation method of the insulating materials of for transformer, which is characterized in that including following preparation process：
A, modified montmorillonoid, titanium dioxide, modified micaceous powder and titanium dioxide are mixed, the dry 10-15min at 60-80 DEG C, then
It imports in ball mill, ball milling 3-5h obtains powder；
B, lubricant and antioxidant are added into powder, is placed in reaction kettle, is heated at 220-260 DEG C and stir 20-
30min after being uniformly dispersed, is cooled to 100-120 DEG C, obtains mixture one；
C, modified epoxy resin emulsion, propylene glycol alginate, polyaminoester emulsion, cellulose base-material and toughener are mixed, is led
Enter in batch mixer, 20-35min is stirred under the rotating speed of 350-460r/min, reuses ultrasonic disperse 10-15min, mixed
Object two；
D, mixture one, mixture two, sodium carboxymethylcellulose and sodium metasilicate are mixed, is imported in vulcanizing press, heating adds
It is molded, you can to obtain finished product.
2. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
Suddenly the preparation method of the modified montmorillonoid of a is：Nanometer sodium-based montmorillonite is added to the sulfuric acid solution that mass fraction is 5-10%
In, 15-25min, filtering are stirred, and be washed with deionized to neutrality, filtered, drying, then it is 30-40% to be placed in mass fraction
In ethanol solution, 2-4h is stirred under 60-70 DEG C of heating water bath, is then added dropwise to butyl titanate, and insulation reaction 1-2h is dry
Afterwards, you can obtain modified montmorillonoid.
3. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
Suddenly the preparation method of the modified micaceous powder of a is：Silane coupling agent is added in ethanol solution, heating water bath is to 55-70 DEG C, drop
It is 5-6 to add ethanedioic acid to adjust pH value, hydrolyzes 1-1.5h, mica sheet is added and impregnates 1-2h, then supersound washing mica sheet 10-
15min, then mica sheet 20-30min is impregnated with deionized water, finally mica sheet is placed in baking oven, the dry 1- at 80-90 DEG C
2h, grinding, you can obtain modified micaceous powder.
4. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
The lubricant of rapid b is the mixing of ethylene group double stearoylketene amine, glyceryl monostearate and glyceryl tristearate.
5. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
The antioxidant of rapid b is any one of antioxidant 1010, antioxidant 2246 and triphenyl phosphite or several mixing.
6. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
Suddenly the preparation method of the modified epoxy resin emulsion of c is：Glycine is watered dissolving, silane coupling agent, emulsifier, 12 are added
Sodium alkyl sulfonate and epoxy resin are placed at 80-90 DEG C and are slowly stirred reaction 2-3h, adds stalk fibre and hollow glass is micro-
Pearl continues to stir 10-15min, and sodium hydroxide solution adjusting pH value is added and is in neutrality, then with high-shearing dispersion emulsifying machine that it is newborn
Change, you can obtain modified epoxy resin emulsion.
7. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
Suddenly the preparation method of the cellulose base-material of c is：Cellulose fibre is added in the aqueous solution of sodium carboxymethylcellulose, in 50-
It heated at 65 DEG C, stir 15-20min, obtain mixed liquor, nano diatomite, nano-titanium dioxide, silicic acid are added into mixed liquor
Sodium and melamine are uniformly mixed, and are beaten and are dehydrated, you can obtain cellulosic-based material.
8. a kind of preparation method of the insulating materials of for transformer according to claim 1, which is characterized in that the step
The toughener of rapid c is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer, methyl methacrylate-fourth two
Any one of alkene-styrol copolymer and ABS- maleic anhydride graft copolymers or several mixing.
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| CN201810318337.5A CN108359222A (en) | 2018-04-11 | 2018-04-11 | A kind of preparation method of the insulating materials of for transformer |
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| CN201810318337.5A CN108359222A (en) | 2018-04-11 | 2018-04-11 | A kind of preparation method of the insulating materials of for transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111145936A (en) * | 2019-11-12 | 2020-05-12 | 南通中菱电力科技股份有限公司 | High-performance high-temperature-resistant insulating paper |
| CN112796151A (en) * | 2021-02-04 | 2021-05-14 | 通城县云水云母科技有限公司 | Preparation method of active mica paper and related products thereof |
| CN115584660A (en) * | 2022-10-20 | 2023-01-10 | 天蔚蓝电驱动科技(江苏)有限公司 | Corona-resistant mica/aramid fiber mixed papermaking paper for new energy automobile and preparation method thereof |
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|---|---|---|---|---|
| CN105336396A (en) * | 2015-11-04 | 2016-02-17 | 铜陵三佳变压器有限责任公司 | Transformer insulating material with good heat conduction effect |
| CN105336397A (en) * | 2015-11-04 | 2016-02-17 | 铜陵三佳变压器有限责任公司 | Non-deformable dimension high-stability insulation paper for transformer |
| CN105350388A (en) * | 2015-11-04 | 2016-02-24 | 铜陵三佳变压器有限责任公司 | Transformer insulation paper with high heatproof grade |
| CN107034738A (en) * | 2017-05-02 | 2017-08-11 | 南通中菱绝缘材料有限公司 | A kind of high-temperature resistance insulation paper |
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| CN111145936A (en) * | 2019-11-12 | 2020-05-12 | 南通中菱电力科技股份有限公司 | High-performance high-temperature-resistant insulating paper |
| CN112796151A (en) * | 2021-02-04 | 2021-05-14 | 通城县云水云母科技有限公司 | Preparation method of active mica paper and related products thereof |
| CN115584660A (en) * | 2022-10-20 | 2023-01-10 | 天蔚蓝电驱动科技(江苏)有限公司 | Corona-resistant mica/aramid fiber mixed papermaking paper for new energy automobile and preparation method thereof |
| CN115584660B (en) * | 2022-10-20 | 2023-09-22 | 天蔚蓝电驱动科技(江苏)有限公司 | Corona-resistant mica/aramid fiber mixed paper for new energy automobile and preparation method thereof |
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