CN108864794A - A kind of coatings of electrical equipment and preparation method thereof - Google Patents
A kind of coatings of electrical equipment and preparation method thereof Download PDFInfo
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- CN108864794A CN108864794A CN201810759507.3A CN201810759507A CN108864794A CN 108864794 A CN108864794 A CN 108864794A CN 201810759507 A CN201810759507 A CN 201810759507A CN 108864794 A CN108864794 A CN 108864794A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- 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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- 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
- C09D5/24—Electrically-conducting 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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- 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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- 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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- 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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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention provides a kind of coatings and preparation method thereof for electrical equipment, is prepared by following component：Organic resin, acrylic acid ester emulsion, calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl, sepiolite, acetone, ethylene glycol, phosphate modified acrylic acid levelling agent, dispersing agent, curing agent, titanate coupling agent and water.Of the invention preparation method is simple, and preparation process is pollution-free, and the coatings of preparation have good adhesion, corrosion resistance, also has good anti-flammability and insulating properties, and environmentally protective, improves safety, extend the service life of electrical equipment.
Description
Technical field
The invention belongs to insulating materials technical fields, and in particular to a kind of coatings and its preparation for electrical equipment
Method.
Background technique
Coatings are the coating with good electrical insulation, there is good electrical property, hot property, mechanical performance and chemistry
Performance.Coatings are divided into 600 DEG C of heatproof or less solvent types and 600-1700 DEG C aqueous two kinds.The coating can be in coated object
Surface, which forms one layer, has higher volume resistivity, can bear strong electric without breakdown ceramic coating.The coating has
Higher mechanical strength and good chemical stability, can be ageing-resistant, water-fast, resistant to chemical etching；Also there is mechanical resistant punching simultaneously
It hits and thermal shock resistance properties, the coating can descend continuous work in corresponding operating temperature.
Publication No. CN104341828A, discloses a kind of coatings, the coating by following each component raw material group
At：1.5 parts of cobalt naphthenate, 6 parts of butanol, 38 parts of linoleic acid, 26 parts of ethanedioic acid polyester.The present invention generates beneficial effect：The present invention
Coatings, can satisfy the deficiency of general coatings, the production raw material of coating is simple, and coating has the function of insulation,
Raw material production cost is low.Publication No. CN103275603A discloses a kind of electrical sheet high insulate water paint and its preparation
Method belongs to aqueous coatings technical field.By the water alcohol acid modified resin of 10~40wt%, 2~20wt% it is aqueous
Amino resins, the powder of 30~60wt%, the auxiliary agent of 0~10wt%, the catalyst of 0.1~5wt% and 5~30wt% go from
The mixing of sub- water, wherein powder be one of perovskite-like, silicon nitride, titanium nitride, boron carbide, silicon carbide and mica powder and with
On.Coating prepared by instant component be coated on electrical sheet surface thickness only 2 μm hereinafter, after high-temperature baking solidifies, in table
Face forms one layer of coating with very high surface resistivity, and coating electrical sheet has biggish pile pieces coefficient.Publication No.
CN1569988 discloses acrylate water paint and preparation method thereof, and the ingredient and proportion (weight) that it includes are：Emulsification
Oily 50-70%, adhesive 10-30%, initiator 1-10%, stabilizer 1-10%.Its preparation method is to be put into oil emulsion instead
It answers in kettle and emulsifies, then release a part；Stabilizer, initiator, adhesive and the oil emulsion of releasing are poured into a high position respectively
In slot；In emulsified oil temperature elevation process in reaction kettle, initiator and adhesive is first successively added dropwise, is then added dropwise simultaneously again
Oil emulsion, adhesive and initiator are until dripping off only；Then it is kept the temperature, and stabilizer is added dropwise until dripping off；Heat preservation knot
Start to cool down after beam, finally discharge；The beneficial effect is that：Acrylate water paint of the present invention complies fully with environmental protection and wants
It asks, is green product, coats glass fiber insulating sleeve with it, pollution-free, adhesive force is good to glass for coating, and feel is soft
It is tough, low-temperature-resistant, oil resistant, resistance to benzene, and have certain water-resistance, it insulate heat-resisting.Coating provided by the above prior art, ingredient
Simply, insulation performance can only meet general requirement, be unable to satisfy higher insulating requirements.
In summary, it is therefore desirable to a kind of better coatings, to improve the deficiencies in the prior art, to push the row
The development of industry.
Summary of the invention
The coatings and preparation method thereof that the object of the present invention is to provide a kind of for electrical equipment, preparation of the invention
Method is simple and easy, and preparation process is pollution-free, and the coatings of preparation have good adhesion, corrosion resistance, also has good
Good anti-flammability and insulating properties, and it is environmentally protective, safety is improved, the service life of electrical equipment is extended.
The present invention provides the following technical solutions：
A kind of coatings for electrical equipment, the raw material including following parts by weight：25-33 parts of organic resin, acrylate
18-24 parts of lotion, 11-15 parts of calcium carbonate, 7-12 parts of silicon nitride, 6-10 parts of titanium dioxide, 8-12 parts of hollow glass micropearl, Hai Pao
7-12 parts of stone, 5-9 parts of acetone, 4-8 parts of ethylene glycol, 3-7 parts of phosphate modified acrylic acid levelling agent, 4-8 parts of dispersing agent, curing agent
3-6 parts, 4-8 parts of titanate coupling agent and 9-14 parts of water.
Preferably, the coatings include the raw material of following parts by weight：29-33 parts of organic resin, acrylic acid ester emulsion
19-24 parts, 13-15 parts of calcium carbonate, 7-11 parts of silicon nitride, 7-10 parts of titanium dioxide, 9-12 parts of hollow glass micropearl, sepiolite 8-
12 parts, 5-7 parts of acetone, 4-6 parts of ethylene glycol, 5-7 parts of phosphate modified acrylic acid levelling agent, 4-6 parts of dispersing agent, curing agent 4-6
Part, 5-8 parts of titanate coupling agent and 12-14 parts of water.
Preferably, the coatings include the raw material of following parts by weight：31 parts of organic resin, acrylic acid ester emulsion 22
Part, 14 parts of calcium carbonate, 9 parts of silicon nitride, 8 parts of titanium dioxide, 11 parts of hollow glass micropearl, 10 parts of sepiolite, 6 parts of acetone, second two
5 parts of alcohol, 6 parts of phosphate modified acrylic acid levelling agent, 4 parts of dispersing agent, 4 parts of curing agent, 7 parts of titanate coupling agent and 12 parts of water.
A kind of preparation method of the coatings for electrical equipment, including following preparation step：
A, organic resin is imported in reaction kettle, is heated to 120-135 DEG C, reacted 22-24min, then be cooled to 68-72 DEG C, add
Enter phosphate modified acrylic acid levelling agent, acetone and water, be stirred to react 0.6-0.8h, after reaction, is cooled to room temperature, obtains
Material one；
B, calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl and sepiolite are mixed, imports in grinder, was ground to
1000 meshes, obtain powder；
C, powder is imported in ethylene glycol and is uniformly dispersed, be then added in material one, be warming up to 55-58 DEG C, with 420-450r/
The revolving speed of min is stirred to react 10-15min, obtains material two；
D, material two is added in acrylic acid ester emulsion, dispersing agent, curing agent and titanate coupling agent is added, in 78-80
At DEG C, it is dispersed with stirring to solid content with the revolving speed of 200-240r/min as 75-80%, stops reaction, finished product can be obtained.
Preferably, the organic resin of the step a be epoxy resin and waterborne polyurethane modified epoxy resin in mass ratio
1:3 mix.
Preferably, the preparation method of the waterborne polyurethane modified epoxy resin is：Polypropylene glycol, isophorone two is different
Cyanate and epoxy resin are uniformly mixed, and are added in reaction kettle, at 78-82 DEG C, with the revolving speed stirring of 260-280r/min instead
1.7-1.8h is answered, is then cooled to 64-68 DEG C, acetone, butyl tin dilaurate, dihydromethyl propionic acid and Isosorbide-5-Nitrae-fourth two is added
Alcohol reacts 2.2-2.5h, then is down to room temperature, and triethylamine, deionized water is added, and high-speed stirred makes its emulsification, adds ethylenediamine
Chain extension is carried out, acetone is evaporated under reduced pressure away, waterborne polyurethane modified epoxy resin can be obtained.
Preferably, the preparation method of the waterborne polyurethane modified epoxy resin is：Polypropylene glycol, isophorone two is different
Cyanate and epoxy resin are uniformly mixed, and are added in reaction kettle, are stirred to react 1.8h at 80 DEG C, with the revolving speed of 260r/min,
Then 65 DEG C are cooled to, acetone, butyl tin dilaurate, dihydromethyl propionic acid and 1,4-butanediol is added, reacts 2.4h, then drop
To room temperature, triethylamine, deionized water is added, high-speed stirred makes its emulsification, adds ethylenediamine and carries out chain extension, is evaporated under reduced pressure out
Acetone is removed, waterborne polyurethane modified epoxy resin can be obtained.
Preferably, the preparation method of the acrylic acid ester emulsion of the step d is：By n-butyl acrylate, ethyl acrylate,
Methyl methacrylate, styrene, butyl acetate and dimethylbenzene mixing, are warming up to 118 DEG C, are stirred to react 1.2h, add and draw
Agent and chain-transferring agent are sent out, is cooled to 96 DEG C, copolyreaction is carried out, adds emulsifier, acrylate can be obtained in stirring and emulsifying
Lotion.
Preferably, the dispersing agent of the step d be fatty glyceride, fatty acid sorbitan and polysorbate in mass ratio
2:1:3 mix.
Preferably, the curing agent of the step d is antifungin, zinc borate and Boratex in mass ratio 2:2:1 mixes.
The beneficial effects of the invention are as follows：
Of the invention preparation method is simple, and preparation process is pollution-free, and the coatings of preparation have good adhesion, resistance to
Corrosivity also has good anti-flammability and insulating properties, and environmentally protective, improves safety, extends making for electrical equipment
Use the service life.
Organic resin in the present invention is the cooperation of epoxy resin and waterborne polyurethane modified epoxy resin, may make preparation
Coating have good glossiness, good antistatic effect, preferable mechanical property, ageing-resistant performance and wear-resisting property.
Waterborne polyurethane modified epoxy resin in the present invention, epoxy resin inherently have good physics, chemically
Can, by a series of modified, it has excellent adhesive strength to the surface of metal and nonmetallic materials, and dielectric properties are good
Well, set yield is small, product size stability is good, hardness is high, flexibility is preferable, to alkali and most of solvent-stable, then and ring
Under oxygen resin synergistic effect, so that the coating of preparation has the property such as extremely strong adhesive force, weatherability, water resistance, durability, insulation
Energy.
Acrylic acid ester emulsion in the present invention has good compatibility, and it is compatible to can be used as the good mixture of the present invention
System so that each ingredient is not susceptible to agglomeration in favorable dispersibility wherein, so that the coating of preparation equally divides
It dissipates uniformly, and the insulation performance of acrylic acid ester emulsion itself is just good, then after adding a series of ingredient, under synergistic effect,
Insulation performance is then more excellent.
Calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl, sepiolite in the present invention, tool can effectively promote painting
Expect anti-oxidant and fire retardancy, but also there is price and environment-friendly advantage, adhesive force is strong, ductility is good, high temperature resistant, service life
Long, hollow glass micropearl therein, sepiolite also have certain adsorptivity, can reduce the peculiar smell in electrical equipment, reduce
The radiation hazradial bundle of electrical equipment.
Specific embodiment
Embodiment 1
A kind of coatings for electrical equipment, the raw material including following parts by weight：25 parts of organic resin, acrylic acid ester emulsion
18 parts, 11 parts of calcium carbonate, 7 parts of silicon nitride, 6 parts of titanium dioxide, 12 parts of hollow glass micropearl, 12 parts of sepiolite, 5 parts of acetone, second
8 parts of glycol, 7 parts of phosphate modified acrylic acid levelling agent, 8 parts of dispersing agent, 3 parts of curing agent, 8 parts of titanate coupling agent and 9 parts of water.
A kind of preparation method of the coatings for electrical equipment, including following preparation step：
A, organic resin is imported in reaction kettle, is heated to 120 DEG C, react 24min, then be cooled to 72 DEG C, phosphate is added and changes
Property acrylic acid levelling agent, acetone and water, are stirred to react 0.6h, after reaction, are cooled to room temperature, obtain material one；
B, calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl and sepiolite are mixed, imports in grinder, was ground to
1000 meshes, obtain powder；
C, powder is imported in ethylene glycol and is uniformly dispersed, be then added in material one, be warming up to 55 DEG C, with the revolving speed of 450r/min
It is stirred to react 10min, obtains material two；
D, material two is added in acrylic acid ester emulsion, adds dispersing agent, curing agent and titanate coupling agent, at 78 DEG C
Under, it is dispersed with stirring to solid content with the revolving speed of 200r/min as 80%, stops reaction, finished product can be obtained.
The organic resin of step a is epoxy resin and waterborne polyurethane modified epoxy resin in mass ratio 1:3 mix.
The preparation method of waterborne polyurethane modified epoxy resin is：By polypropylene glycol, isoflurane chalcone diisocyanate and ring
Oxygen resin is uniformly mixed, and is added in reaction kettle, is stirred to react 1.7h at 82 DEG C, with the revolving speed of 260r/min, is then cooled to
68 DEG C, acetone, butyl tin dilaurate, dihydromethyl propionic acid and 1,4-butanediol is added, reacts 2.5h, then be down to room temperature, adds
Enter triethylamine, deionized water, high-speed stirred makes its emulsification, adds ethylenediamine and carries out chain extension, is evaporated under reduced pressure away acetone, i.e.,
Waterborne polyurethane modified epoxy resin can be obtained.
The preparation method of the acrylic acid ester emulsion of step d is：By n-butyl acrylate, ethyl acrylate, methacrylic acid
Methyl esters, styrene, butyl acetate and dimethylbenzene mixing, are warming up to 118 DEG C, are stirred to react 1.2h, add initiator and chain turns
Agent is moved, is cooled to 96 DEG C, copolyreaction is carried out, adds emulsifier, acrylic acid ester emulsion can be obtained in stirring and emulsifying.
The dispersing agent of step d is fatty glyceride, fatty acid sorbitan and polysorbate in mass ratio 2:1:3 mixing and
At.
The curing agent of step d is antifungin, zinc borate and Boratex in mass ratio 2:2:1 mixes.
Embodiment 2
A kind of coatings for electrical equipment, the raw material including following parts by weight：33 parts of organic resin, acrylic acid ester emulsion
24 parts, 13 parts of calcium carbonate, 11 parts of silicon nitride, 10 parts of titanium dioxide, 9 parts of hollow glass micropearl, 12 parts of sepiolite, 7 parts of acetone, second
4 parts of glycol, 5 parts of phosphate modified acrylic acid levelling agent, 4 parts of dispersing agent, 4 parts of curing agent, 8 parts of titanate coupling agent and water 12
Part.
A kind of preparation method of the coatings for electrical equipment, including following preparation step：
A, organic resin is imported in reaction kettle, is heated to 120 DEG C, react 24min, then be cooled to 72 DEG C, phosphate is added and changes
Property acrylic acid levelling agent, acetone and water, are stirred to react 0.6h, after reaction, are cooled to room temperature, obtain material one；
B, calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl and sepiolite are mixed, imports in grinder, was ground to
1000 meshes, obtain powder；
C, powder is imported in ethylene glycol and is uniformly dispersed, be then added in material one, be warming up to 58 DEG C, with the revolving speed of 450r/min
It is stirred to react 10min, obtains material two；
D, material two is added in acrylic acid ester emulsion, adds dispersing agent, curing agent and titanate coupling agent, at 78 DEG C
Under, it is dispersed with stirring to solid content with the revolving speed of 200r/min as 80%, stops reaction, finished product can be obtained.
The organic resin of step a is epoxy resin and waterborne polyurethane modified epoxy resin in mass ratio 1:3 mix.
The preparation method of waterborne polyurethane modified epoxy resin is：By polypropylene glycol, isoflurane chalcone diisocyanate and ring
Oxygen resin is uniformly mixed, and is added in reaction kettle, is stirred to react 1.7h at 82 DEG C, with the revolving speed of 280r/min, is then cooled to
64 DEG C, acetone, butyl tin dilaurate, dihydromethyl propionic acid and 1,4-butanediol is added, reacts 2.5h, then be down to room temperature, adds
Enter triethylamine, deionized water, high-speed stirred makes its emulsification, adds ethylenediamine and carries out chain extension, is evaporated under reduced pressure away acetone, i.e.,
Waterborne polyurethane modified epoxy resin can be obtained.
The preparation method of the acrylic acid ester emulsion of step d is：By n-butyl acrylate, ethyl acrylate, methacrylic acid
Methyl esters, styrene, butyl acetate and dimethylbenzene mixing, are warming up to 118 DEG C, are stirred to react 1.2h, add initiator and chain turns
Agent is moved, is cooled to 96 DEG C, copolyreaction is carried out, adds emulsifier, acrylic acid ester emulsion can be obtained in stirring and emulsifying.
The dispersing agent of step d is fatty glyceride, fatty acid sorbitan and polysorbate in mass ratio 2:1:3 mixing and
At.
The curing agent of step d is antifungin, zinc borate and Boratex in mass ratio 2:2:1 mixes.
Embodiment 3
A kind of coatings for electrical equipment, the raw material including following parts by weight：31 parts of organic resin, acrylic acid ester emulsion
22 parts, 14 parts of calcium carbonate, 9 parts of silicon nitride, 8 parts of titanium dioxide, 11 parts of hollow glass micropearl, 10 parts of sepiolite, 6 parts of acetone, second
5 parts of glycol, 6 parts of phosphate modified acrylic acid levelling agent, 4 parts of dispersing agent, 4 parts of curing agent, 7 parts of titanate coupling agent and water 12
Part.
A kind of preparation method of the coatings for electrical equipment, including following preparation step：
A, organic resin is imported in reaction kettle, is heated to 120 DEG C, react 24min, then be cooled to 72 DEG C, phosphate is added and changes
Property acrylic acid levelling agent, acetone and water, are stirred to react 0.6h, after reaction, are cooled to room temperature, obtain material one；
B, calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl and sepiolite are mixed, imports in grinder, was ground to
1000 meshes, obtain powder；
C, powder is imported in ethylene glycol and is uniformly dispersed, be then added in material one, be warming up to 58 DEG C, with the revolving speed of 450r/min
It is stirred to react 10min, obtains material two；
D, material two is added in acrylic acid ester emulsion, adds dispersing agent, curing agent and titanate coupling agent, at 78 DEG C
Under, it is dispersed with stirring to solid content with the revolving speed of 240r/min as 78%, stops reaction, finished product can be obtained.
The organic resin of step a is epoxy resin and waterborne polyurethane modified epoxy resin in mass ratio 1:3 mix.
The preparation method of waterborne polyurethane modified epoxy resin is：By polypropylene glycol, isoflurane chalcone diisocyanate and ring
Oxygen resin is uniformly mixed, and is added in reaction kettle, is stirred to react 1.8h at 80 DEG C, with the revolving speed of 260r/min, is then cooled to
65 DEG C, acetone, butyl tin dilaurate, dihydromethyl propionic acid and 1,4-butanediol is added, reacts 2.4h, then be down to room temperature, adds
Enter triethylamine, deionized water, high-speed stirred makes its emulsification, adds ethylenediamine and carries out chain extension, is evaporated under reduced pressure away acetone, i.e.,
Waterborne polyurethane modified epoxy resin can be obtained.
The preparation method of the acrylic acid ester emulsion of step d is：By n-butyl acrylate, ethyl acrylate, methacrylic acid
Methyl esters, styrene, butyl acetate and dimethylbenzene mixing, are warming up to 118 DEG C, are stirred to react 1.2h, add initiator and chain turns
Agent is moved, is cooled to 96 DEG C, copolyreaction is carried out, adds emulsifier, acrylic acid ester emulsion can be obtained in stirring and emulsifying.
The dispersing agent of step d is fatty glyceride, fatty acid sorbitan and polysorbate in mass ratio 2:1:3 mixing and
At.
The curing agent of step d is antifungin, zinc borate and Boratex in mass ratio 2:2:1 mixes.
Comparative example 1
Detection comparison is carried out using common coatings in the prior art.
The finished product for detecting above embodiments and comparative example preparation, obtains following detection data：
Table one：
By the resulting experimental data of table one, it can be deduced that, the properties of the finished product of preparation method preparation of the invention are significantly excellent
Different from common product in the prior art, and the preferred preparation method in the embodiment of the present invention 3, obtain at moral character
It can be the most excellent.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of coatings for electrical equipment, which is characterized in that the raw material including following parts by weight：Organic resin 25-
33 parts, 18-24 parts of acrylic acid ester emulsion, 11-15 parts of calcium carbonate, 7-12 parts of silicon nitride, 6-10 parts of titanium dioxide, hollow glass it is micro-
8-12 parts of pearl, 7-12 parts of sepiolite, 5-9 parts of acetone, 4-8 parts of ethylene glycol, 3-7 parts of phosphate modified acrylic acid levelling agent, dispersion
4-8 parts of agent, 3-6 parts of curing agent, 4-8 parts of titanate coupling agent and 9-14 parts of water.
2. a kind of coatings for electrical equipment according to claim 1, which is characterized in that the coatings packet
Include the raw material of following parts by weight：29-33 parts of organic resin, 19-24 parts of acrylic acid ester emulsion, 13-15 parts of calcium carbonate, silicon nitride 7-
11 parts, 7-10 parts of titanium dioxide, 9-12 parts of hollow glass micropearl, 8-12 parts of sepiolite, 5-7 parts of acetone, 4-6 parts of ethylene glycol, phosphorus
5-7 parts of acid esters modified acroleic acid levelling agent, 4-6 parts of dispersing agent, 4-6 parts of curing agent, 5-8 parts of titanate coupling agent and water 12-14
Part.
3. a kind of coatings for electrical equipment according to claim 1, which is characterized in that the coatings packet
Include the raw material of following parts by weight：31 parts of organic resin, 22 parts of acrylic acid ester emulsion, 14 parts of calcium carbonate, 9 parts of silicon nitride, titanium dioxide
8 parts of titanium, 11 parts of hollow glass micropearl, 10 parts of sepiolite, 6 parts of acetone, 5 parts of ethylene glycol, phosphate modified acrylic acid levelling agent 6
Part, 4 parts of dispersing agent, 4 parts of curing agent, 7 parts of titanate coupling agent and 12 parts of water.
4. a kind of described in any item preparation methods of the coatings for electrical equipment of claim 1-3, which is characterized in that
Including following preparation step：
A, organic resin is imported in reaction kettle, is heated to 120-135 DEG C, reacted 22-24min, then be cooled to 68-72 DEG C, add
Enter phosphate modified acrylic acid levelling agent, acetone and water, be stirred to react 0.6-0.8h, after reaction, is cooled to room temperature, obtains
Material one；
B, calcium carbonate, silicon nitride, titanium dioxide, hollow glass micropearl and sepiolite are mixed, imports in grinder, was ground to
1000 meshes, obtain powder；
C, powder is imported in ethylene glycol and is uniformly dispersed, be then added in material one, be warming up to 55-58 DEG C, with 420-450r/
The revolving speed of min is stirred to react 10-15min, obtains material two；
D, material two is added in acrylic acid ester emulsion, dispersing agent, curing agent and titanate coupling agent is added, in 78-80
At DEG C, it is dispersed with stirring to solid content with the revolving speed of 200-240r/min as 75-80%, stops reaction, finished product can be obtained.
5. a kind of preparation method of coatings for electrical equipment according to claim 4, which is characterized in that described
The organic resin of step a is epoxy resin and waterborne polyurethane modified epoxy resin in mass ratio 1:3 mix.
6. a kind of preparation method of coatings for electrical equipment according to claim 5, which is characterized in that described
The preparation method of waterborne polyurethane modified epoxy resin is：Polypropylene glycol, isoflurane chalcone diisocyanate and epoxy resin are mixed
It closes uniformly, is added in reaction kettle, is stirred to react 1.7-1.8h at 78-82 DEG C, with the revolving speed of 260-280r/min, then cools down
To 64-68 DEG C, acetone, butyl tin dilaurate, dihydromethyl propionic acid and 1,4-butanediol is added, reacts 2.2-2.5h, then drop
To room temperature, triethylamine, deionized water is added, high-speed stirred makes its emulsification, adds ethylenediamine and carries out chain extension, is evaporated under reduced pressure out
Acetone is removed, waterborne polyurethane modified epoxy resin can be obtained.
7. a kind of preparation method of coatings for electrical equipment according to claim 6, which is characterized in that described
The preparation method of waterborne polyurethane modified epoxy resin is：Polypropylene glycol, isoflurane chalcone diisocyanate and epoxy resin are mixed
It closes uniformly, is added in reaction kettle, is stirred to react 1.8h at 80 DEG C, with the revolving speed of 260r/min, be then cooled to 65 DEG C, be added
Acetone, butyl tin dilaurate, dihydromethyl propionic acid and 1,4-butanediol react 2.4h, then are down to room temperature, addition triethylamine,
Deionized water, high-speed stirred make its emulsification, add ethylenediamine and carry out chain extension, are evaporated under reduced pressure away acetone, water can be obtained
Property polyurethane modified epoxy resin.
8. a kind of preparation method of coatings for electrical equipment according to claim 4, which is characterized in that described
The preparation method of the acrylic acid ester emulsion of step d is：By n-butyl acrylate, ethyl acrylate, methyl methacrylate, benzene second
Alkene, butyl acetate and dimethylbenzene mixing, are warming up to 118 DEG C, are stirred to react 1.2h, add initiator and chain-transferring agent, cool down
To 96 DEG C, copolyreaction is carried out, adds emulsifier, acrylic acid ester emulsion can be obtained in stirring and emulsifying.
9. a kind of preparation method of coatings for electrical equipment according to claim 4, which is characterized in that described
The dispersing agent of step d is fatty glyceride, fatty acid sorbitan and polysorbate in mass ratio 2:1:3 mix.
10. a kind of preparation method of coatings for electrical equipment according to claim 4, which is characterized in that institute
The curing agent for stating step d is antifungin, zinc borate and Boratex in mass ratio 2:2:1 mixes.
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| CN110982409A (en) * | 2019-12-27 | 2020-04-10 | 广东电网有限责任公司电力科学研究院 | Heat-dissipation insulating coating and preparation method and application thereof |
| CN111440507A (en) * | 2020-04-17 | 2020-07-24 | 童孝俊 | Insulating coating and preparation method thereof, metal substrate and semiconductor device |
| CN114196306A (en) * | 2021-12-06 | 2022-03-18 | 广东福德电子有限公司 | High-tolerance insulating coating for spraying and preparation method thereof |
| CN115011203A (en) * | 2022-06-21 | 2022-09-06 | 佛山市顺德区博宜防腐涂料科技有限公司 | Epoxy modified polyurethane low-crosslinking-temperature water-based insulating paint and preparation method thereof |
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| CN114196306A (en) * | 2021-12-06 | 2022-03-18 | 广东福德电子有限公司 | High-tolerance insulating coating for spraying and preparation method thereof |
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Application publication date: 20181123 |