CN106634440B - A kind of thixotropy impregnating resin composition and preparation method thereof - Google Patents
A kind of thixotropy impregnating resin composition and preparation method thereof Download PDFInfo
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- CN106634440B CN106634440B CN201611233676.0A CN201611233676A CN106634440B CN 106634440 B CN106634440 B CN 106634440B CN 201611233676 A CN201611233676 A CN 201611233676A CN 106634440 B CN106634440 B CN 106634440B
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
- C08G59/4042—Imines; Imides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4284—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof together with other curing agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Epoxy Resins (AREA)
- Organic Insulating Materials (AREA)
Abstract
A kind of thixotropy impregnating resin composition, includes the following parts by weight: 15~35 parts of epoxy resin；5~20 parts of bismaleimide；10~28 parts of acid anhydrides；15~40 parts of diluent；2~15 parts of thixotropic agent；With 0.1~1 part of drier；Wherein, thixotropic agent is double bond containing non-polar polyolefinic.Preparation method of the invention: first epoxy resin is added in reaction kettle, while being stirred to epoxy resin and it is warming up to 60-80 DEG C, add bismaleimide, it is mixed evenly, it is cooled to room temperature, acid anhydrides, diluent, thixotropic agent and drier is added, is then uniformly dispersed to get thixotropy impregnating resin composition is arrived.The present invention adds double bond containing non-polar polyolefinic thixotropic agent in thixotropy impregnating resin composition, so that impregnating resin composition resist sagging performance is good, dramatically increases the extension paint amount of impregnating resin, improves the mechanical performance and electric property of motor insulation structure.
Description
Technical field
The invention belongs to the impregnating resin field of electric device more particularly to a kind of thixotropy impregnating resin composition and
Preparation method.
Background technique
It impregnates poly- usually using epoxy anhydride in electric coil and casting electric device (such as stator, rotor and transformer)
Object is closed, to provide electrical insulating property, electric coil vibrostability, improvement aging characteristics and prevent chemistry and mechanical influence
Shield property.Since electric device miniaturization is the more and more important project of high-efficient motor, it is exhausted to improve electric device piece electrical
Edge performance and temperature classification become key property in this respect, and about this point, impregnating varnish is key element.
Currently, the impregnating varnish of electric device, it is mainly reflected in that hang paint amount little, manufactures and lack caused by being mostly lost because of paint solution
It falls into, and then reduces weatherability, the water resistance of electric device.For the extension paint amount for solving the problems, such as impregnating varnish, current solution base
This is all addition nano silica to guarantee to hang paint amount, however this method has certain journey to the electric property of impregnating varnish system
The loss of degree, and for the VPI vacuum impregnation for requiring smaller impregnating varnish viscosity, the additional amount of nano silica extremely has
Limit, it is also very small for changing the ability of extension paint amount.Therefore, the extension paint amount problem of impregnating varnish is existing electric device impregnating varnish
Important technology bottleneck in related application field.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one
Kind thixotropy impregnating resin composition and preparation method thereof；The thixotropy impregnating resin composition is providing the same of high extension paint amount
When, assign that the excellent electrical insulation characteristics of dipping system, mechanical performance, the time that dries out is short and the excellent properties such as thermal stability.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of thixotropy impregnating resin composition, in parts by weight, including component below:
Wherein, the thixotropic agent is double bond containing non-polar polyolefinic.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the thixotropic agent is polybutadiene, in polyisoprene
It is one or two kinds of.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the Weight-average molecular of the polybutadiene and polyisoprene
Amount is 2000~8000g/mol；Isosorbide-5-Nitrae-polybutadiene mass content is greater than 75% in the polybutadiene.Applicant passes through
Research finds that Isosorbide-5-Nitrae-polybutadiene is thixotropic in raising system while also having taken into account the electric property of system, and in polybutadiene
Isosorbide-5-Nitrae-polybutadiene mass content will lead to resin thixotropy lower than 75% and do not reach requirement, while if in polybutadiene
1,2- polybutadiene mass content excessively high also will affect resin solidification physical performance.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the epoxy resin is selected from bisphenol A epoxide resin (such as E51
Epoxy resin), bisphenol F epoxy resin, cycloaliphatic epoxy resin, bisphenol-s epoxy resin, one of novolac epoxy resin or several
Kind.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the bismaleimide is selected from bisphenol-A diphenyl ether span
Come acid imide, Bisphenol F Diphenyl Ether Bismaleimide, phenolphthalein Diphenyl Ether Bismaleimide, thymolphthalein diphenyl ether span to come
Acid imide, thymol blue Diphenyl Ether Bismaleimide, o-cresolphthalein Diphenyl Ether Bismaleimide, 1- naphtholphthalein diphenyl ether are double
The one or more of maleimide, thymolphthalein Diphenyl Ether Bismaleimide.
Above-mentioned thixotropy impregnating resin composition, it is preferred that it is adjacent that the acid anhydrides is selected from methyl tetrahydro phthalic anhydride, methyl hexahydro
One or more of phthalate anhydride, methylnadic anhydride, carbic anhydride.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the diluent is selected from phthalic acid 2-glycidyl
Ether, tetrahydrophthalic acid diglycidyl ether, resorcinolformaldehyde resin, neopentylglycol diglycidyl ether, ring
Hexanediol diglycidyl ether, ethylene glycol diglycidylether, glycerin diglycidyl ether, trimethylolpropane glycidol
One or more of ether, isocyanuric acid three-glycidyl ether.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the drier is composition metal complex compound.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the drier is selected from OMG company (Ou Enji company)
One or more of Borchers Dry 0410,0133,0347aqua, Borchi OXYgen-Coat, Coat 1101.
The inventive concept total as one, the present invention also provides a kind of preparations of above-mentioned thixotropy impregnating resin composition
Method, comprising the following steps:
(1) first epoxy resin is added in reaction kettle, while being stirred to epoxy resin and is warming up to 60 DEG C -80
DEG C, bismaleimide is added, is mixed evenly；
(2) mixture after step (1) is cooled to room temperature, acid anhydrides, diluent, thixotropic agent and drier is added, then
With 800~1200r/min Rate Dispersion, 30~40min to get arrive the thixotropy impregnating resin composition.
Compared with the prior art, the advantages of the present invention are as follows:
(1) present invention adds polybutadiene or/and polyisoprene thixotropic agent in thixotropy impregnating resin composition, makes
It is good to obtain impregnating resin composition resist sagging performance, dramatically increases the extension paint amount of impregnating resin, improves the machine of motor insulation structure
Tool performance and electric property.
(2) present invention adds polybutadiene or/and polyisoprene thixotropic agent in thixotropy impregnating resin composition, gathers
The addition of butadiene or/and polyisoprene thixotropic agent can keep that impregnating varnish system long term storage is stable, does not settle
The excellent electric property of dipping system is also ensured simultaneously.
(3) present invention is added in thixotropy impregnating resin composition answers with what thixotropic agent, epoxy-resin systems matched
Metal complex drier is closed, the surface drying time of impregnating resin composition can be shortened, is further conducive to the raising for hanging paint amount.
(4) thixotropy impregnating resin composition viscosity of the invention is suitable for that can cause to hang under paint amount to avoid viscosity is too low
Drop can also be conducive to construction, add low in cost to avoid viscosity is too big and extends dip time.
(5) preparation method of the invention is easy to operate, only need to be uniform by each stock dispersion.
Specific embodiment
To facilitate the understanding of the present invention, invention herein is done below in conjunction with preferred embodiment and more comprehensively, is meticulously retouched
It states, but protection scope of the present invention is not limited to following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, and it is of the invention to be not intended to limitation
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1:
A kind of thixotropy impregnating resin composition of the invention, including following component:
The preparation method of the thixotropy impregnating resin composition of the present embodiment, comprising the following steps:
(1) 30kg E51 epoxy resin is added in reaction kettle, the temperature of reaction kettle is risen to 70 DEG C while stirring, then
16kg bisphenol-A Diphenyl Ether Bismaleimide is added, is mixed evenly, is cooled to room temperature；
(2) add 20kg methyl tetrahydro phthalic anhydride, 27kg low viscosity epoxy reactive diluent glycerin diglycidyl ether,
5kg polyisoprene rubber, 0410 model drier of 0.5kg OMG company, then with 1000r/min high speed dispersion 30~
40min is to get the thixotropy impregnating resin composition for arriving the present embodiment.
Embodiment 2:
A kind of thixotropy impregnating resin composition of the invention, including following component:
The preparation method of the thixotropy impregnating resin composition of the present embodiment, comprising the following steps:
(1) 26kg bisphenol F epoxy resin is added in reaction kettle, the temperature of reaction kettle is risen to 70 DEG C while stirring, so
18kg Bisphenol F Diphenyl Ether Bismaleimide is added afterwards, is mixed evenly, is cooled to room temperature；
(2) add 20kg methylnadic anhydride, 25kg low viscosity epoxy reactive diluent neopentyl glycol two shrink it is sweet
Oily ether, 5kg polybutadiene rubber, 0133 model drier of 0.5kgOMG company, then with 1000r/min high speed dispersion 30~
40min is to get the thixotropy impregnating resin composition for arriving the present embodiment.
Comparative example:
The thixotropy impregnating resin composition of this comparative example, including following component:
The preparation method of the thixotropy impregnating resin composition of this comparative example, comprising the following steps:
(1) 28kg E51 epoxy resin is added in reaction kettle, the temperature of reaction kettle is risen to 70 DEG C while stirring, then
22kg bisphenol-A Diphenyl Ether Bismaleimide is added, is mixed evenly, is cooled to room temperature；
(2) add 23kg methyl tetrahydro phthalic anhydride, 25kg low viscosity epoxy reactive diluent glycerin diglycidyl ether,
5kg Degussa R974 fumed silica, 0410 model drier of 0.5kg OMG company, then with 1000r/min high speed dispersion
30~40min is to get the thixotropy impregnating resin composition for arriving this comparative example.
The correlated performance experimental data of the thixotropy impregnating resin composition of above-mentioned 2 embodiments and this comparative example is shown in Table
Shown in 1: by the experimental data of table 1 it is found that thixotropy impregnating resin composition extension paint amount of the invention is higher, electricity can be significantly improved
The mechanical performance and electric property of machine insulation system；And thixotropy impregnating resin composition of the invention can keep impregnating varnish body
It is that long term storage stabilization also ensures the excellent electric property of impregnating varnish while sedimentation.
The thixotropy impregnating resin composition main performance index of each embodiment and comparative example of table 1 is analyzed
Note: the test condition of paint amount, volume resistance, electrical strength and adhesion strength is hung in table 1 are as follows: sample condition of cure is
150 ± 2 DEG C, 0.5h is heated to 180 DEG C ± 2 DEG C, keeps the temperature 5h；It is transformer oil that electrical strength, which tests medium, using rapid pressure
Mode is tested；Thixotropic index is measured using rotational viscometer, measures adhesive respectively at 25 DEG C in 6r/min and 60r/min
Ratio, be denoted as 6/ η 60 of η.
Claims (8)
1. a kind of thixotropy impregnating resin composition, which is characterized in that in parts by weight, including component below:
Wherein, the thixotropic agent is double bond containing non-polar polyolefinic；
The thixotropic agent is one or both of polybutadiene, polyisoprene；
The weight average molecular weight of the polybutadiene and polyisoprene is 2000~8000g/mol；1 in the polybutadiene,
The mass content of 4- polybutadiene is greater than 75%.
2. thixotropy impregnating resin composition as described in claim 1, which is characterized in that the epoxy resin is selected from bisphenol-A
One of epoxy resin, bisphenol F epoxy resin, cycloaliphatic epoxy resin, bisphenol-s epoxy resin, novolac epoxy resin are several
Kind.
3. thixotropy impregnating resin composition as described in claim 1, which is characterized in that the bismaleimide is selected from double
Phenol A Diphenyl Ether Bismaleimide, Bisphenol F Diphenyl Ether Bismaleimide, phenolphthalein Diphenyl Ether Bismaleimide, thymolphthalein
Diphenyl Ether Bismaleimide, thymol blue Diphenyl Ether Bismaleimide, o-cresolphthalein Diphenyl Ether Bismaleimide, 1- naphthalene
The one or more of phenolphthalein Diphenyl Ether Bismaleimide, thymolphthalein Diphenyl Ether Bismaleimide.
4. thixotropy impregnating resin composition as described in claim 1, which is characterized in that the acid anhydrides is selected from methyl tetrahydro benzene
One or more of acid anhydride, methylhexahydrophthalic anhydride, methylnadic anhydride, carbic anhydride.
5. thixotropy impregnating resin composition as described in claim 1, which is characterized in that the diluent is selected from O-phthalic
Sour diglycidyl ether, tetrahydrophthalic acid diglycidyl ether, resorcinolformaldehyde resin, neopentyl glycol two contract
Water glycerin ether, cylohexanediol diglycidyl ether, ethylene glycol diglycidylether, glycerin diglycidyl ether, trihydroxy methyl
One or more of propane glycidol ether, isocyanuric acid three-glycidyl ether.
6. thixotropy impregnating resin composition as described in any one in claim 1-5, which is characterized in that the drier is multiple
Close metal complex.
7. thixotropy impregnating resin composition as claimed in claim 6, which is characterized in that the drier is selected from OMG company
Borchers Dry 0410,0133,0347aqua, Borchi OXYgen-Coat, one or more of Coat 1101.
8. a kind of preparation method of such as described in any item thixotropy impregnating resin compositions of claim 1-7, which is characterized in that
The following steps are included:
(1) first epoxy resin is added in reaction kettle, while being stirred to epoxy resin and is warming up to 60-80 DEG C, then
Bismaleimide is added, is mixed evenly；
(2) mixture after step (1) is cooled to room temperature, acid anhydrides, diluent, thixotropic agent and drier is added, then with
30~40min of 800-1200r/min Rate Dispersion to get arrive the thixotropy impregnating resin composition.
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| CN115646789A (en) * | 2022-10-27 | 2023-01-31 | 佛山市顺德区伊戈尔电力科技有限公司 | Environment-friendly reactor and preparation process thereof |
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