CN106634440A - Thixotropic impregnating resin composition, and preparation method thereof - Google Patents
Thixotropic impregnating resin composition, and preparation method thereof Download PDFInfo
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- CN106634440A CN106634440A CN201611233676.0A CN201611233676A CN106634440A CN 106634440 A CN106634440 A CN 106634440A CN 201611233676 A CN201611233676 A CN 201611233676A CN 106634440 A CN106634440 A CN 106634440A
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- resin composition
- thixotropy
- impregnating resin
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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
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Epoxy Resins (AREA)
Abstract
The invention discloses a thixotropic impregnating resin composition. The thixotropic impregnating resin composition comprises, by weight, 15 to 35 parts of epoxy resin, 5 to 20 parts of bismaleimide, 10 to 28 parts of an anhydride, 15 to 40 parts of a diluent, 2 to 15 parts of a thixotropic agent, and 0.1 to 1 part of a drier; wherein the thixotropic agent is a nonpolar polyolefin containing double bonds. A preparation method comprises following steps: epoxy resin is delivered into a reaction kettle, is stirred, and is heated at the same time to 60 to 80 DEG C, bismaleimide is added, an obtained mixture is stirred to be uniform, and is cooled to room temperature; and the anhydride, the diluent, the thixotropic agent, and the drier are added; and uniform dispersing is realized so as to obtain the thixotropic impregnating resin composition. According to the preparation method, the nonpolar polyolefin containing double bonds is added into the thixotropic impregnating resin composition, so that thixotropic impregnating resin composition is excellent in sagging resistance, adhered lacuquer quantity is increased obviously, and mechanical properties and electrical properties of motor insulation structures are improved.
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
Its preparation method.
Background technology
Epoxy anhydride is usually used in dipping electric coil and casting electric device (such as stator, rotor and transformer) to gather
Compound providing electrical insulating property, electric coil vibrostability, improve aging characteristics and chemistry and mechanical influence prevented
Shield property.Because electric device miniaturization is the more and more important problem of high-efficient motor, therefore it is exhausted to improve electric device piece electrical
Edge performance and temperature classification become key property in this respect, and with regard to this point, impregnating varnish is key element.
At present, the impregnating varnish of electric device, is mainly reflected in extension paint amount less, causes manufacture to lack because painting liquid loss more
Fall into, and then reduce weatherability, the resistance to water of electric device.To solve the problems, such as the extension paint amount of impregnating varnish, current solution base
This is all to add nano silicon to ensure to hang paint amount, but this method has certain journey to the electric property of impregnating varnish system
The loss of degree, and for requiring the VPI vacuum impregnations of less impregnating varnish viscosity, the addition of nano silicon extremely has
Limit, the ability for changing extension paint amount is also very little.Therefore, the extension paint amount problem of impregnating varnish is existing electric device impregnating varnish
In the important technology bottleneck in related application field.
The content of the invention
The technical problem to be solved is to overcome the shortcomings of to be mentioned and defect in background above technology, there is provided one
Plant thixotropy impregnating resin composition and preparation method thereof；The thixotropy impregnating resin composition is providing the same of high extension paint amount
When, give that the excellent electrical insulation characteristics of dipping system, mechanical performance, the time that is dried is short and the excellent properties such as heat endurance.
To solve above-mentioned technical problem, technical scheme proposed by the present invention is：
A kind of thixotropy impregnating resin composition, in parts by weight, including following component：
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 in polybutadiene, polyisoprene
One or two.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the Weight-average molecular of the polybutadiene and polyisoprene
Amount is 2000～8000g/mol；The mass content of Isosorbide-5-Nitrae-polybutadiene is more than 75% in the polybutadiene.Applicant passes through
Research finds that Isosorbide-5-Nitrae-polybutadiene is thixotropic in raising system while also taken into account the electric property of system, and in polybutadiene
Isosorbide-5-Nitrae-polybutadiene mass content may result in resin thixotropy less than 75% and do not reach requirement, if while in polybutadiene
1,2- polybutadiene mass contents too high can also 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, the one kind or several in novolac epoxy resin
Kind.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the BMI is selected from bisphenol-A diphenyl ether span
Come acid imide, Bisphenol F Diphenyl Ether Bismaleimide, phenolphthalein Diphenyl Ether Bismaleimide, thymolphthalein diphenyl ether span
Acid imide, thymol blue Diphenyl Ether Bismaleimide, o-cresolphthalein Diphenyl Ether Bismaleimide, 1- naphtholphthaleins diphenyl ether are double
One or more of maleimide, thymolphthalein Diphenyl Ether Bismaleimide.
Above-mentioned thixotropy impregnating resin composition, it is preferred that the acid anhydrides is adjacent selected from methyl tetrahydro phthalic anhydride, methyl hexahydro
One or more in 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 in 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 companies (Ou Enji companies)
Borchers Dry 0410,0133, one or more in 0347aqua, Borchi OXYgen-Coat, Coat 1101.
Used as a total inventive concept, the present invention also provides a kind of preparation of above-mentioned thixotropy impregnating resin composition
Method, comprises the following steps：
(1) first epoxy resin added in reactor, while being stirred to epoxy resin and is warming up to 60 DEG C -80
DEG C, add BMI, mixing and stirring；
(2) mixture after step (1) is cooled into room temperature, adds acid anhydrides, diluent, thixotropic agent and drier, then
With 800～1200r/min, 30～40min of Rate Dispersion, that is, obtain the thixotropy impregnating resin composition.
Compared with prior art, it is an advantage of the current invention that：
(1) present invention adds polybutadiene or/and polyisoprene thixotropic agent in thixotropy impregnating resin composition, makes
Obtain impregnating resin composition resist sagging performance good, dramatically increase the extension paint amount of impregnating resin, improve 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 the long term storage of impregnating varnish system to stablize, not occur what is settled
Also ensure that the excellent electric property of dipping system simultaneously.
(3) present invention is added and answering that thixotropic agent, epoxy-resin systems match in thixotropy impregnating resin composition
Metal complex drier is closed, the surface drying time of impregnating resin composition can be shortened, be further conducive to hanging the raising of paint amount.
(4) thixotropy impregnating resin composition viscosity of the invention is suitable, can avoid that viscosity is too low to be caused to hang under paint amount
Drop, it is also possible to avoid viscosity too big and extend dip time, beneficial to construction, add with low cost.
(5) preparation method of the invention is simple to operate, only need to be uniform by each stock dispersion.
Specific embodiment
For the ease of understanding the present invention, more comprehensively, meticulously retouch to inventing to do herein below in conjunction with preferred embodiment
State, but protection scope of the present invention is not limited to specific examples below.
Unless otherwise defined, all technical terms used hereinafter are generally understood that implication phase with those skilled in the art
Together.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limit the present invention's
Protection domain.
Unless otherwise specified, various raw material, reagent, instrument and equipment used in the present invention etc. 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 present invention, including following component：
The preparation method of the thixotropy impregnating resin composition of the present embodiment, comprises the following steps：
(1) 30kg E51 epoxy resin is added in reactor, while stirring the temperature of reactor is risen into 70 DEG C, then
16kg bisphenol-A Diphenyl Ether Bismaleimides, mixing and stirring is added to be cooled to room temperature；
(2) add 20kg methyl tetrahydro phthalic anhydrides, 27kg low viscosity epoxy reactive diluent glycerin diglycidyl ethers,
5kg polyisoprene rubbers, the model drier of 0.5kg OMG companies 0410, then with 1000r/min at a high speed dispersion 30～
40min, that is, obtain the thixotropy impregnating resin composition of the present embodiment.
Embodiment 2：
A kind of thixotropy impregnating resin composition of the present invention, including following component：
The preparation method of the thixotropy impregnating resin composition of the present embodiment, comprises the following steps：
(1) 26kg bisphenol F epoxy resins are added in reactor, while stirring the temperature of reactor is risen into 70 DEG C, so
18kg Bisphenol F Diphenyl Ether Bismaleimides, mixing and stirring is added to be cooled to room temperature afterwards；
(2) 20kg methylnadic anhydrides, 25kg low viscosity epoxy reactive diluents neopentyl glycol two are added and shrinks sweet
Oily ether, 5kg polybutadiene rubbers, the model drier of 0.5kgOMG companies 0133, then with 1000r/min at a high speed dispersion 30～
40min, that is, obtain the thixotropy impregnating resin composition of 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, comprises the following steps：
(1) 28kg E51 epoxy resin is added in reactor, while stirring the temperature of reactor is risen into 70 DEG C, then
22kg bisphenol-A Diphenyl Ether Bismaleimides, mixing and stirring is added to be cooled to room temperature；
(2) add 23kg methyl tetrahydro phthalic anhydrides, 25kg low viscosity epoxy reactive diluent glycerin diglycidyl ethers,
5kg Degussa R974 aerosils, the model drier of 0.5kg OMG companies 0410, are then disperseed at a high speed with 1000r/min
30～40min, that is, obtain the thixotropy impregnating resin composition of 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：From the experimental data of table 1, the thixotropy impregnating resin composition extension paint amount of the present invention is higher, can significantly improve electricity
The mechanical performance and electric property of machine insulation system；And the thixotropy impregnating resin composition of the present invention can keep impregnating varnish body
It is that impregnating varnish excellent electric property is also ensured that while long term storage is not stably settled.
The thixotropy impregnating resin composition main performance index analysis of each embodiment of table 1 and comparative example
Note：The test condition of extension paint amount, volume resistance, electrical strength and adhesion strength is in table 1：Sample condition of cure is
150 ± 2 DEG C, 0.5h is heated to 180 DEG C ± 2 DEG C, is incubated 5h；Electrical strength test medium is transformer oil, using rapid pressure
Mode is tested；Thixotropic index, is measured using rotational viscometer, when adhesive is determined in 6r/min and 60r/min respectively for 25 DEG C
Ratio, be designated as the η 60 of η 6/.
Claims (10)
1. a kind of thixotropy impregnating resin composition, it is characterised in that in parts by weight, including following component：
Wherein, the thixotropic agent is double bond containing non-polar polyolefinic.
2. thixotropy impregnating resin composition as claimed in claim 1, it is characterised in that the thixotropic agent be polybutadiene,
One or two in polyisoprene.
3. thixotropy impregnating resin composition as claimed in claim 2, it is characterised in that the polybutadiene and poly- isoamyl two
The weight average molecular weight of alkene is 2000～8000g/mol；The mass content of Isosorbide-5-Nitrae-polybutadiene is more than in the polybutadiene
75%.
4. thixotropy impregnating resin composition as claimed in claim 1, it is characterised in that the epoxy resin is selected from bisphenol-A
One kind or several in epoxy resin, bisphenol F epoxy resin, cycloaliphatic epoxy resin, bisphenol-s epoxy resin, novolac epoxy resin
Kind.
5. thixotropy impregnating resin composition as claimed in claim 1, it is characterised in that the BMI is selected from double
Phenol A Diphenyl Ether Bismaleimides, Bisphenol F Diphenyl Ether Bismaleimide, phenolphthalein Diphenyl Ether Bismaleimide, thymolphthalein
Diphenyl Ether Bismaleimide, thymol blue Diphenyl Ether Bismaleimide, o-cresolphthalein Diphenyl Ether Bismaleimide, 1- naphthalenes
One or more of phenolphthalein Diphenyl Ether Bismaleimide, thymolphthalein Diphenyl Ether Bismaleimide.
6. thixotropy impregnating resin composition as claimed in claim 1, it is characterised in that the acid anhydrides is selected from methyl tetrahydrochysene benzene
One or more in acid anhydride, methylhexahydrophthalic anhydride, methylnadic anhydride, carbic anhydride.
7. thixotropy impregnating resin composition as claimed in claim 1, it is characterised 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 in propane glycidol ether, isocyanuric acid three-glycidyl ether.
8. the thixotropy impregnating resin composition as described in any one of claim 1-7, it is characterised in that the drier is multiple
Close metal complex.
9. thixotropy impregnating resin composition as claimed in claim 8, it is characterised in that the drier is selected from OMG companies
Borchers Dry 0410,0133, one or more in 0347aqua, Borchi OXYgen-Coat, Coat 1101.
10. a kind of preparation method of the thixotropy impregnating resin composition as described in any one of claim 1-9, its feature exists
In comprising the following steps：
(1) first epoxy resin added in reactor, while being stirred to epoxy resin and is warming up to 60-80 DEG C, then
Add BMI, mixing and stirring；
(2) mixture after step (1) is cooled into room temperature, adds acid anhydrides, diluent, thixotropic agent and drier, then with
800-1200r/min 30～40min of Rate Dispersion, that is, obtain the thixotropy impregnating resin composition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611233676.0A CN106634440B (en) | 2016-12-28 | 2016-12-28 | A kind of thixotropy impregnating resin composition and preparation method thereof |
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| CN201611233676.0A CN106634440B (en) | 2016-12-28 | 2016-12-28 | A kind of thixotropy impregnating resin composition and preparation method thereof |
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| CN106634440A true CN106634440A (en) | 2017-05-10 |
| CN106634440B CN106634440B (en) | 2019-04-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448898A (en) * | 2022-09-26 | 2022-12-09 | 常州大学 | Aromatic diamine monomer simultaneously containing phenolphthalein Cardo and alkyl structure and preparation method and application of polyimide thereof |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090124751A1 (en) * | 2007-11-14 | 2009-05-14 | Momentive Performance Materials Inc. | Two-part moisture-curable resin composition and adhesive, sealant and coating compositions based thereon |
| CN102533059A (en) * | 2011-12-21 | 2012-07-04 | 株洲时代新材料科技股份有限公司 | Solvent-free impregnating varnish and preparation and use methods thereof |
-
2016
- 2016-12-28 CN CN201611233676.0A patent/CN106634440B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090124751A1 (en) * | 2007-11-14 | 2009-05-14 | Momentive Performance Materials Inc. | Two-part moisture-curable resin composition and adhesive, sealant and coating compositions based thereon |
| CN102533059A (en) * | 2011-12-21 | 2012-07-04 | 株洲时代新材料科技股份有限公司 | Solvent-free impregnating varnish and preparation and use methods thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448898A (en) * | 2022-09-26 | 2022-12-09 | 常州大学 | Aromatic diamine monomer simultaneously containing phenolphthalein Cardo and alkyl structure and preparation method and application of polyimide thereof |
| 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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| CN106634440B (en) | 2019-04-26 |
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Effective date of registration: 20180726 Address after: 412199 Industrial Park, Lukou Economic Development Zone, Zhuzhou County, Zhuzhou, Hunan Applicant after: Zhuzhou Times Electric Insulation Co., Ltd. Address before: 412000 Haitian Road, Tianyuan District, Zhuzhou, Hunan Province, No. 18 Applicant before: Zhuzhou Shidai New Material Sci-Tech Co., Ltd. |
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