CN108611048A - Dry-type transformer dealcoholized type organic silicon potting adhesive and preparation method thereof - Google Patents
Dry-type transformer dealcoholized type organic silicon potting adhesive and preparation method thereof Download PDFInfo
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- CN108611048A CN108611048A CN201611142240.0A CN201611142240A CN108611048A CN 108611048 A CN108611048 A CN 108611048A CN 201611142240 A CN201611142240 A CN 201611142240A CN 108611048 A CN108611048 A CN 108611048A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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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Abstract
The present invention provides a kind of dry-type transformer dealcoholized type organic silicon potting adhesive and preparation method thereof, and organic silicon potting adhesive includes component A, B component and component C, and three constituent mass ratios are 100:3:3~100:10:10, component A includes 100 parts of hydroxy-terminated polysiloxanes, 50~300 parts of fillers, 0~80 part of plasticizer, 1~8 part of color, 0.2~5 part of surfactant and 0.1~1 part of curing accelerator in parts by mass；B component includes 100 parts of plasticizer, 5~100 parts of crosslinking agents, 0.01~3 part of catalyst and 0~100 part of coupling agent in parts by mass；Component C includes 100 parts of plasticizer, 0~3 part of catalyst and 0~100 part of another coupling agent in parts by mass.Low-temperature curable of the present invention, adhering speed be fast, easily synchronous solidification, shrinking percentage is small and adhesive force is good, plays more preferable waterproof, moisture-proof, heat dissipation, fire-retardant and insulating effect to dry-type transformer, extends its use reliability.
Description
Technical field
The invention belongs to casting glue technical fields, more particularly, to a kind of dry-type transformer dealcoholized type organic silicon potting adhesive
And preparation method thereof.
Background technology
Dry-type transformer has fire safety, and pollution-free, energy saving low-loss, low noise, adapts to high humility and other are severe
The features such as being run in environment, therefore it is widely used in local lighting, skyscraper, airport, the places such as harbour CNC mechanical equipments.
The service life of the safe operation of dry-type transformer and it is heavily dependent on the peace of transformer winding insulation
Full reliability.At present pouring dry transformer using epoxy resin or organic silicon potting adhesive as the embedding of major insulation material extremely
In device, the effects that insulating, is moisture-proof, radiating is acted, reliability is promoted.
Current existing organic silicon potting adhesive has a defect that：1, when environment temperature is less than 15 DEG C, curing rate is slow, glues
Connect the slow even non-binding of speed；2, the operating time is short, makes troubles to production and processing；3, to dry-type transformer inner assembly adhesive force
Difference, is easy infiltration, and humidity resistance is low.
Invention content
The dry-type transformer that the present invention provides a kind of low-temperature curable, the operating time is long, adhering speed is fast, adhesive force is good is used
Dealcoholized type organic silicon potting adhesive and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
According to the first aspect of the invention, the present invention provides a kind of dry-type transformer dealcoholized type organic silicon potting adhesive, packet
Include component A, B component and component C, the mass ratio of component A and B component, component C is 100:3:3~100:10:10；
Component A includes in parts by mass：100 parts of hydroxy-terminated polysiloxanes, 50~300 parts of fillers, 0~80 part of plasticizer, 1
~8 parts of colors, 0.2~5 part of surfactant and 0.1~1 part of curing accelerator；；
B component includes in parts by mass：100 parts of plasticizer, 5~100 parts of crosslinking agents, 0.01~3 part of catalyst and 0~
100 parts of coupling agents；
Component C includes in parts by mass：100 parts of plasticizer, 0~3 part of catalyst, 0~100 part of coupling agent；
Wherein, curing accelerator is deionized water；Surfactant is sorbester p17, sorbester p18, Tween 80, polysorbate60 and ten
One kind in dialkyl benzene sulfonic acids sodium or arbitrary several mixture.
According to an embodiment of the present invention, the viscosity of hydroxy-terminated polysiloxane is 350~20000mPas.
According to an embodiment of the present invention, filler is silicon powder, silica flour, kaolin, powdered whiting, lightweight carbonic acid
Calcium, nano-calcium carbonate, barium sulfate, calcium sulfate, magnesium sulfate, precipitated silica, Meteorological Act white carbon, mica powder, flake asbestos, oxygen
Change aluminium, aluminium hydroxide and one kind in magnesium hydroxide or arbitrary several mixture.
According to an embodiment of the present invention, every 100 parts of uses, 0~30 part of inorganic agent of filler is handled, and inorganic agent is
Hexamethyldisilazane.
According to an embodiment of the present invention, plasticizer is dimethicone, and the viscosity of plasticizer is 30~1000mPa
s。
According to an embodiment of the present invention, color is any one in carbon black, titanium dioxide, iron oxide red and iron oxide black.
According to an embodiment of the present invention, crosslinking agent is methyl orthosilicate, ethyl orthosilicate, positive silicic acid propyl ester, gathers just
Silester, methyltrimethoxysilane, methyltriethoxysilane, poly- methyltriethoxysilane, vinyl trimethoxy
In silane, vinyltriethoxysilane, propyl trimethoxy silicane, propyl-triethoxysilicane and octyltri-ethoxysilane
One kind or arbitrary several mixture.
According to an embodiment of the present invention, catalyst be dibutyl tin laurate, stannous octoate, butyl titanate,
One kind in isopropyl titanate, Organo-Titanate Chelates and organic bismuth catalyst or arbitrary several mixture.
According to an embodiment of the present invention, the coupling agent in the coupling agent and component C in B component is respectively 3- aminopropyls
Triethoxysilane, 3- aminopropyl trimethoxysilanes, 3- aminopropyltriethoxies dimethoxysilane, 3- aminopropyltriethoxy diethoxies
Base silane, N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane, N- (β-aminoethyl)-gamma-aminopropyl-triethoxy-silane,
γ-methacryloxypropyl trimethoxy silane, 3- (the third oxygen of 2,3- epoxies) propyl trimethoxy silicane, 3- (2,3- rings
The third oxygen of oxygen) propyl-triethoxysilicane, 2- (3,4- 7-oxa-bicyclo[4.1.0s base) ethyl trimethoxy silane, 3- (the third oxygen of 2,3- epoxies)
Hydroxypropyl methyl dimethoxysilane, 3- (the third oxygen of 2,3- epoxies) hydroxypropyl methyl diethoxy silane, diethylin are for methyl trimethoxy
Oxysilane, anilinomethyl triethoxysilane, one kind in dichloromethyl triethoxysilane or arbitrary several mixture,
Coupling agent in B component is different from the coupling agent in component C.
According to the second aspect of the invention, the present invention provides a kind of system of dry-type transformer dealcoholized type organic silicon potting adhesive
Preparation Method, the preparation method include the preparation process of component A, the preparation process of the preparation process of B component and component C；
The preparation process of component A includes：
1) processing filler is prepared：100 parts of hydroxy-terminated polysiloxanes and 50~300 parts of fillers are stirred, are heated up, vacuum
Low, cooling treatment is taken off, the first processing filler is obtained；By 100 parts of plasticizer, 10~50 parts of inorganic agents and 0~4 part of deionized water into
Row stirs, and 50~150 parts of fillers are gradually added in whipping process, is heated up later, the de- reduction process of vacuum, and addition 30 later~
150 parts of hydroxy-terminated polysiloxanes stir evenly, and second processing filler is obtained after cooling treatment；
2) emulsifier is prepared：By 100 parts of surfactants, 50~200 parts of hydroxy-terminated polysiloxanes and 50~200 parts of plasticising
Agent stirs evenly, and 10~100 parts of curing accelerators are gradually added in whipping process, obtain emulsifier；
3) processing color is prepared：100 parts of plasticizer or hydroxy-terminated polysiloxane, 10~200 parts of color masterbatch are stirred evenly, are passed through
Cross grinding or high-temperature vacuum take off it is low after obtain color；
4) by above-mentioned steps 1) to 100 part of first processing filler, 20~50 parts of second processing fillers, 0.5 obtained in 3)
~3 parts of emulsifiers, 0.5~5 part of color and 10~80 parts of hydroxy-terminated polysiloxanes, 0~40 part of plasticizer stir evenly, filtering
Vacuum defoamation processing is carried out afterwards, obtains component A；
The preparation process of B component includes：
Each ingredient in B component is rocked in the case where sealing completely cuts off air conditions, stirs evenly processing, obtains B component.
The preparation process of component C includes：
Each ingredient in component C is rocked in the case where sealing completely cuts off air conditions, stirs evenly processing, obtains component C；
Wherein, each ingredient in component A, B component and component C is in terms of mass parts.
The invention has the advantages and positive effects that：
1, the present invention uses and separates epoxy group type silane coupling agent and amine type silane coupling agent to B component and C
Method in component, when sizing material component A, B component and component C after mixing, amino silicane coupling agent can be with epoxy radicals silicone hydride
Coupling agent combines so that colloid is stronger to transformer inner assembly adhesive force, much stronger than exclusive use amine type silane coupling agent
Or epoxy group type silane coupling agent, making colloid, (main material is fiber glass epoxy, ABS plastic to dry-type transformer inner assembly
And epoxy resin etc.) adhesive force reaches cohesional failure, play outstanding waterproof, dampproof effect；
If epoxy group type silane coupling agent and amine type silane coupling agent are mixed into a component, room temperature in advance
After storage 7 days, resample with glue embedding, since epoxy group type silane coupling agent and amine type silane coupling agent have filled
Point reaction, casting glue is unable to reach cohesional failure to dry-type transformer inner assembly adhesive force, can not play preferable waterproof, moisture-proof
Effect；
If silane coupling agent is added in component A, due to containing deionized water in component A, silane coupling agent can shift to an earlier date
Hydrolyzing causes to fail, and with glue, casting glue is still unable to reach dry-type transformer inner assembly adhesive force interior for sampling after storage 7 days
It is poly- to destroy, preferable waterproofing protection effect can not be played.
The present invention is more preferable compared with common two-component dealcoholized type organic silicon potting adhesive adhesive force in the market, prepared by the present invention
Casting glue can reach cohesional failure, same batten in 24 hours when 25 DEG C of room temperature after embedding for dry-type transformer inner assembly adhesive force
Adhesive force reaches cohesional failure and needs 150 hours or more or nothing after traditional two-component dealcoholized type organic silicon potting adhesive embedding under part
Method reaches cohesional failure, improves the production efficiency that casting glue uses producer.
2, the present invention is using the side for emulsifying deionized water, surfactant, plasticizer and hydroxy-terminated polysiloxane jointly
Emulsifier is made in method, introduces deionized water by way of emulsifier is added when producing component A, the deionized water after emulsification passes through
High-speed stirred can be evenly distributed in component A.When with glue embedding, a certain proportion of deionized water can promote B groups in component A
Dividing, the hydrolysis of the crosslinking agent in component C, silane coupling agent, accelerates reaction speed and adhering speed so that colloid curing rate is fast,
Adhering speed is fast, at the same can deep cure, low temperature curing properties are good.
3, the adhesive force and adhesive strength for reinforcing dealcoholized type organic silicon potting adhesive according to other methods, generally take
There are two ways to：(1) coupling agent of synthesis special construction reinforces the adhesive force to special base material, this scheme production technology is more multiple
The coupling agent storage stability of miscellaneous and bad control, special construction is poor；(2) colloid after curing is placed in baking oven with embedding device
In 60 DEG C baking 2 hours more than so that adhesive force is further promoted, this scheme reduce casting glue use producer production efficiency, need
Increase the equipment such as baking oven.
The method that the present invention takes compares both the above scheme, has simple for process, easy to operate, stable storage excellent
Point.
4, the dealcoholized type organic silicon potting adhesive for preparing of the present invention have low-temperature curable, operating time are long, adhering speed is fast,
The good advantage of adhesive force plays the role of better waterproof, insulation, heat radiation protection to dry-type transformer, extends dry type transformation
The reliability and service life of device.
Specific implementation mode
It elaborates below to specific embodiments of the present invention.
Embodiment 1
Prepare component A
Prepare coarse whiting semi-finished product sizing material：In parts by mass (similarly hereinafter), by the hydroxy-terminated polysiloxane of 100 parts of 2000mPas
It is put into planetary mixer with 100 part of 800 mesh powdered whiting, warming while stirring, temperature reaches 120 DEG C -150 DEG C and opens pumping
Vacuum stops vacuumizing after maintaining temperature to vacuumize 2 hours, and coarse whiting semi-finished product sizing material is obtained after cooling.
Prepare precipitated silica semi-finished product sizing material：It is the dimethicone of 350mPas and 40 part six by 100 parts of viscosity
It is stirred evenly in methyl disilazane and 1 part of deionized water input kneader, 150 parts of precipitation method hard charcoals is put into while stirring
It is black, it adds 80 DEG C of heating after expecting and maintains 2 hours, heat up later 180 DEG C and simultaneously the temperature is maintained to vacuumize 2 hours, vacuumize knot
The hydroxy-terminated polysiloxane that 100 parts of viscosity are 2000mPas is added after beam quickly to stir evenly, is quickly cooled down to obtain the precipitation method
White carbon semi-finished product sizing material.
Prepare emulsifier：It is by dimethicone that 5 parts of Tween 80s, 20 parts of viscosity are 50mPas, 20 parts of viscosity
The hydroxy-terminated polysiloxane of 20000mPas stirs evenly, and 0.8 part of deionized water is added while stirring, after the completion of charging
Obtain emulsifier.
Prepare black cream：The dimethicone that 50 parts of viscosity are 1000mPas is stirred evenly with 5 parts of carbon blacks, with three rollers
Machine is ground 3 times, obtains black cream.
Prepare grey component A：Take 100 parts of above-mentioned coarse whiting semi-finished product sizing materials, 20 parts of precipitated silica semi-finished product sizing materials,
Dimethicone that hydroxy-terminated polysiloxane that 60 parts of viscosity are 1500mPas, 5 parts of viscosity are 50mPas, 2 parts of emulsifiers,
0.5 part of black cream stirs evenly, vacuum defoamation after filtering, and obtained grey working fluid is grey component A, and 25 DEG C of room temperature is viscous
Degree is about 3500mPas.
Prepare B component：It is dimethicone, 30 parts of 3- (the third oxygen of the 2,3- epoxies) propyl of 350mPas to take 100 parts of viscosity
Trimethoxy silane, 0.5 part of dibutyl tin laurate, 6 parts of poly- methyltriethoxysilane, 34 parts of ethyl orthosilicates are in osculum
It in glue bucket, is shaken up after sealing, stands 2 hours and can be obtained B component.
Prepare component C：It is dimethicone, 60 parts of N- (β-aminoethyl)-γ-ammonia third of 350mPas to take 100 parts of viscosity
Base trimethoxy silane, 0.2 part of butyl titanate shake up in small chewing-gum bucket after sealing, stand 2 hours and can be obtained component C.
Grey component A is stirred evenly using preceding, with B component, component C in mass ratio 100:5:5 take, after stirring evenly
Vacuum defoamation, in embedding to dry-type transformer.Dry-type transformer after encapsulating is placed in vacuum defoamation 2 minutes in vacuum degasing machine,
Wait for that colloid primary solidification can move.
70 minutes colloid operating times when 25 DEG C of room temperature, surface drying time 3 hours, in 5 hours, 24 hours primary solidification time
Outer uniform synchronization solidification, hardness 23 ° (Shore A durometers).Sizing material is to the materials base such as fiber glass epoxy, ABS plastic, epoxy resin
Material has good adhesion, and adhesive force reaches cohesional failure after 24 hours, does not fall off, does not crack after aging, not shrinking, no
It is fuel-displaced.Waterproof, insulation, the heat radiation protection demand that dry-type transformer embedding can be met, can promote the safe and reliable of dry-type transformer
Property.
Embodiment 2
Prepare component A
Prepare silicon powder semi-finished product sizing material：In parts by mass (similarly hereinafter), by the poly- silica of the terminal hydroxy group of 100 parts of 1500mPas
Alkane and 150 part of 400 mesh silicon powder warming while stirring, temperature reach 120 DEG C of -150 DEG C of unlatchings and vacuumize, and temperature is maintained to vacuumize
Stop vacuumizing after 2 hours, cooling obtains silicon powder semi-finished product sizing material.
Prepare Meteorological Act white carbon semi-finished product sizing material：It is the dimethicone of 1000mPas and 10 part six by 80 parts of viscosity
It is stirred evenly in methyl disilazane and 0.5 part of deionized water input kneader, it is white that 50 parts of Meteorological Acts is put into while stirring
Carbon black adds 80 DEG C of heating after expecting and maintains 2 hours, heats up later 180 DEG C and simultaneously the temperature is maintained to vacuumize 2 hours, vacuumize
After the hydroxy-terminated polysiloxane that 100 parts of viscosity are 2000mPas be added quickly stir evenly, obtain gas after being quickly cooled down
As method white carbon semi-finished product sizing material.
Prepare emulsifier：It is the dimethicone of 350mPas, 20 by 10 parts of sorbester p17s, 2 parts of polysorbate60s, 15 parts of viscosity
The hydroxy-terminated polysiloxane that part viscosity is 5000mPas stirs evenly, and 1 part of deionized water is added while stirring, has fed
Emulsifier is obtained after.
Prepare red cream：30 parts of viscosity are equal for the hydroxy-terminated polysiloxane of 1500mPas and 60 parts of iron oxide reds stirrings
It is even, it heats up 120 DEG C -150 DEG C, stops vacuumizing after vacuumizing 1 hour, red cream is obtained after cooling.
Prepare red component A：Take 100 parts of above-mentioned silicon powder semi-finished product sizing materials, 20 parts of Meteorological Act white carbon semi-finished product glue
Material, 20 parts of viscosity are the hydroxy-terminated polysiloxane of 10000mPas, 1 part of emulsifier, 2 parts of red cream stir evenly, true after filtering
Empty deaeration, obtained red working fluid are red component A, and 25 DEG C of viscosity of room temperature are about 7000mPas.
Prepare B component：Take 100 parts of viscosity be the dimethicone of 50mPas, 40 parts of 3- aminopropyl triethoxysilanes,
0.5 part of dibutyl tin laurate, 100 parts of positive silicic acid propyl esters shake up in small chewing-gum bucket after sealing, and standing 2 hours can obtain
To B component.
Prepare component C：It is the dimethicone of 50mPas, 50 parts of 2- (3,4- 7-oxa-bicyclo[4.1.0s base) to take 100 parts of viscosity
Ethyl trimethoxy silane shakes up in small chewing-gum bucket after sealing, stands 2 hours and can be obtained component C.
Red component A is stirred evenly using preceding, with B component, component C in mass ratio 100:7:7 take, after stirring evenly
Vacuum defoamation, in embedding to dry-type transformer.Dry-type transformer after encapsulating is placed in vacuum defoamation 2 minutes in vacuum degasing machine,
Wait for that colloid primary solidification can move.
40 minutes colloid operating times when 25 DEG C of room temperature, surface drying time 2 hours, in 4 hours, 24 hours primary solidification time
Outer uniform synchronization solidification, hardness 28 ° (Shore A durometers).Sizing material is to the materials base such as fiber glass epoxy, ABS plastic, epoxy resin
Material has good adhesion, and adhesive force reaches cohesional failure after 24 hours, does not fall off, does not crack after aging, not shrinking, no
It is fuel-displaced.Waterproof, insulation, the heat radiation protection demand that dry-type transformer embedding can be met, can promote the safe and reliable of dry-type transformer
Property.
Embodiment 3
Prepare component A
Prepare aluminium oxide semi-finished product sizing material：In parts by mass (similarly hereinafter), by the poly- silica of the terminal hydroxy group of 100 parts of 5000mPas
Alkane and 200 part of 500 mesh alumina powder warming while stirring, temperature reach 120 DEG C of -150 DEG C of unlatchings and vacuumize, and maintain temperature to take out true
Stop vacuumizing after 2 hours empty, aluminium oxide semi-finished product sizing material is obtained after cooling.
Prepare precipitated silica semi-finished product sizing material：It is the dimethicone of 250mPas and 25 part six by 100 parts of viscosity
It is stirred evenly in methyl disilazane and 2 parts of deionized water input kneaders, 150 parts of precipitation method hard charcoals is put into while stirring
It is black, it adds 80 DEG C of heating after expecting and maintains 2 hours, heat up later 180 DEG C and simultaneously the temperature is maintained to vacuumize 2 hours, vacuumize knot
The hydroxy-terminated polysiloxane that 100 parts of viscosity are 2000mPas is added after beam quickly to stir evenly, is precipitated after being quickly cooled down
Method white carbon semi-finished product sizing material.
Prepare emulsifier：It is the dimethicone of 500mPas, 30 by 10 parts of sorbester p18s, 2 parts of Tween 80s, 20 parts of viscosity
The hydroxy-terminated polysiloxane that part viscosity is 20000mPas stirs evenly, and 1.5 parts of deionized waters are added while stirring, add
Emulsifier is obtained after the completion of material.
Prepare white cream：30 parts of viscosity are equal for the hydroxy-terminated polysiloxane of 1500mPas and 20 parts of titanium dioxides stirrings
It is even, it heats up 120 DEG C -150 DEG C, stops vacuumizing after vacuumizing 1 hour, white cream is obtained after cooling.
Prepare white component A：Take 100 parts of above-mentioned aluminium oxide semi-finished product sizing materials, 10 parts of precipitated silica semi-finished product glue
Material, 20 parts of viscosity are the hydroxy-terminated polysiloxane of 10000mPas, 0.5 part of emulsifier, 3 parts of white cream stir evenly, after filtering
Vacuum defoamation, obtained white working fluid are white component A, and 15 DEG C of viscosity of room temperature are about 9000mPas.
Prepare B component：It is dimethicone, the 40 parts of 3- aminopropyl trimethoxy silicon of 100mPas to take 100 parts of viscosity
Alkane, 0.3 part of dibutyl tin laurate, 60 parts of ethyl orthosilicates shake up in small chewing-gum bucket after sealing, stand 2 hours
Obtain B component.
Prepare component C：It is dimethicone, 80 parts of 3- (the third oxygen of the 2,3- epoxies) propyl of 100mPas to take 100 parts of viscosity
Trimethoxy silane shakes up in small chewing-gum bucket after sealing, stands 2 hours and can be obtained component C.
White component A is stirred evenly using preceding, with B component, component C in mass ratio 100:7:5 take, after stirring evenly
Vacuum defoamation, in embedding to dry-type transformer.Dry-type transformer after encapsulating is placed in vacuum defoamation 2 minutes in vacuum degasing machine,
Wait for that colloid primary solidification can move.
120 minutes colloid operating times when 15 DEG C of room temperature, surface drying time 4 hours, 6 hours, 48 hours primary solidification time
Inside and outside uniform synchronization solidification, hardness 32 ° (Shore A durometers).Sizing material is to materials such as fiber glass epoxy, ABS plastic, epoxy resin
Base material has good adhesion, and adhesive force reaches cohesional failure after 48 hours, do not fall off, do not crack after aging, not shrinking,
It is not fuel-displaced.Waterproof, insulation, the heat radiation protection demand of dry-type transformer embedding can be met, the safety that can promote dry-type transformer can
By property.
It illustrates：The aging condition is constant temperature and humidity machine (85 ± 5 DEG C of temperature in the above embodiments；Humidity
RH85 ± 5%) 1000 hours, cold-hot impact tester -40~100 degree Celsius thermal shock 300 times, 130 DEG C of bakings of constant temperature oven
500 hours roasting, open air, which is exposed to the sun, to drench with rain 6 months or more.
The other components of the present invention dry-type transformer constituted with proportioning is with dealcoholized type organic silicon potting adhesive in this hair
In bright protection domain, explanation is no longer described one by one herein.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be construed as limiting the practical range of the present invention.Any changes and modifications in accordance with the scope of the present application,
It should all still fall within the scope of the patent of the present invention.
Claims (10)
1. a kind of dry-type transformer dealcoholized type organic silicon potting adhesive, which is characterized in that including component A, B component and component C, A
The mass ratio of component and B component, component C is 100:3:3~100:10:10；
Component A includes in parts by mass：100 parts of hydroxy-terminated polysiloxanes, 50~300 parts of fillers, 0~80 part of plasticizer, 1~8
Part color, 0.2~5 part of surfactant and 0.1~1 part of curing accelerator；
B component includes in parts by mass：100 parts of plasticizer, 5~100 parts of crosslinking agents, 0.01~3 part of catalyst and 0~100 part
Coupling agent；
Component C includes in parts by mass：100 parts of plasticizer, 0~3 part of catalyst and 0~100 part of coupling agent；
Wherein, the curing accelerator is deionized water；The surfactant is sorbester p17, sorbester p18, Tween 80, polysorbate60
And one kind in neopelex or arbitrary several mixture；In coupling agent and the component C in the B component
Coupling agent it is different.
2. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the terminal hydroxy group
The viscosity of polysiloxanes is 350~20000mPas.
3. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the filler is
Silicon powder, kaolin, powdered whiting, precipitated calcium carbonate, nano-calcium carbonate, barium sulfate, calcium sulfate, magnesium sulfate, sinks at silica flour
Shallow lake method white carbon, Meteorological Act white carbon, mica powder, flake asbestos, aluminium oxide, aluminium hydroxide and one kind or arbitrary in magnesium hydroxide
Several mixtures.
4. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the filler is every
100 parts of uses, 0~30 part of inorganic agent is handled, and the inorganic agent is hexamethyldisilazane.
5. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the plasticizer
Viscosity for dimethicone, the plasticizer is 30~1000mPas.
6. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the color is
Any one in carbon black, titanium dioxide, iron oxide red and iron oxide black.
7. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the crosslinking agent
For methyl orthosilicate, ethyl orthosilicate, positive silicic acid propyl ester, poly- ethyl orthosilicate, methyltrimethoxysilane, methyl triethoxy
Silane, poly- methyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, propyl trimethoxy silicon
One kind in alkane, propyl-triethoxysilicane and octyltri-ethoxysilane or arbitrary several mixture.
8. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the catalyst
For dibutyl tin laurate, stannous octoate, butyl titanate, isopropyl titanate, Organo-Titanate Chelates and organic bismuth catalyst
In one kind or arbitrary several mixture.
9. dry-type transformer according to claim 1 dealcoholized type organic silicon potting adhesive, which is characterized in that the B component
In coupling agent and the component C in coupling agent be respectively 3- aminopropyl triethoxysilanes, 3- aminopropyl trimethoxy silicon
Alkane, 3- aminopropyltriethoxies dimethoxysilane, 3- aminopropyltriethoxies diethoxy silane, N- (β-aminoethyl)-γ-aminopropyls three
Methoxy silane, N- (β-aminoethyl)-gamma-aminopropyl-triethoxy-silane, γ-methacryloxypropyl trimethoxy silicon
Alkane, 3- (the third oxygen of 2,3- epoxies) propyl trimethoxy silicane, 3- (the third oxygen of 2,3- epoxies) propyl-triethoxysilicane, 2- (3,4-
7-oxa-bicyclo[4.1.0 base) ethyl trimethoxy silane, 3- (the third oxygen of 2,3- epoxies) hydroxypropyl methyl dimethoxysilane, 3- (2,3- rings
The third oxygen of oxygen) hydroxypropyl methyl diethoxy silane, diethylin for methyltrimethoxysilane, anilinomethyl triethoxysilane and
One kind in dichloromethyl triethoxysilane or arbitrary several mixture.
10. the dry-type transformer according to any one of claims 1 to 9 preparation method of dealcoholized type organic silicon potting adhesive,
It is characterized in that, which includes the preparation process of component A, the preparation process of the preparation process of B component and component C；
The preparation process of component A includes：
1) processing filler is prepared：100 parts of hydroxy-terminated polysiloxanes are stirred with 50~300 parts of fillers, are heated up, vacuum takes off
Low, cooling treatment obtains the first processing filler；100 parts of plasticizer, 10~50 parts of inorganic agents and 0~4 part of deionized water are carried out
It stirs, 50~150 parts of fillers is gradually added in whipping process, heated up later, the de- reduction process of vacuum, addition 30 later~
150 parts of hydroxy-terminated polysiloxanes stir evenly, and second processing filler is obtained after cooling treatment；
2) emulsifier is prepared：100 parts of surfactants, 50~200 parts of hydroxy-terminated polysiloxanes and 50~200 parts of plasticizer are stirred
It mixes uniformly, 10~100 parts of curing accelerators is gradually added in whipping process, obtain emulsifier；
3) processing color is prepared：100 parts of plasticizer or hydroxy-terminated polysiloxane, 10~200 parts of color masterbatch are stirred evenly, by grinding
Mill or high-temperature vacuum take off it is low after obtain color；
4) by above-mentioned steps 1) to obtain in 3) 100 part of first processing filler, 20~50 parts of second processing fillers, 0.5~3 part
Emulsifier, 0.5~5 part of color and 10~80 parts of hydroxy-terminated polysiloxanes, 0~40 part of plasticizer stir evenly, and filtering is laggard
Row vacuum defoamation is handled, and obtains component A；
The preparation process of B component includes：
Each ingredient in B component is rocked in the case where sealing completely cuts off air conditions, stirs evenly processing, obtains B component.
The preparation process of component C includes：
Each ingredient in component C is rocked in the case where sealing completely cuts off air conditions, stirs evenly processing, obtains component C；
Wherein, each ingredient in the component A, B component and component C is in terms of mass parts.
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| CN111410931A (en) * | 2020-04-26 | 2020-07-14 | 湖北回天新材料股份有限公司 | Curable silicone sealant and preparation method and application thereof |
| CN112917782A (en) * | 2021-01-28 | 2021-06-08 | 中国航发长春控制科技有限公司 | Precision valve control coil encapsulation mold and encapsulation process method |
| CN113249057A (en) * | 2021-04-15 | 2021-08-13 | 镇江博慎新材料有限公司 | High-flash-point two-component dealcoholized organic silicon sealing material curing agent |
| CN115029100A (en) * | 2022-05-27 | 2022-09-09 | 湖北平安电工科技股份公司 | Thermosetting hard mica plate repairing agent and preparation method thereof |
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