CN108987072A - The insulating film of transformer coil - Google Patents
The insulating film of transformer coil Download PDFInfo
- Publication number
- CN108987072A CN108987072A CN201810637623.8A CN201810637623A CN108987072A CN 108987072 A CN108987072 A CN 108987072A CN 201810637623 A CN201810637623 A CN 201810637623A CN 108987072 A CN108987072 A CN 108987072A
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- CN
- China
- Prior art keywords
- weight
- insulating film
- parts
- transformer coil
- insulating coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
- C09D5/22—Luminous paints
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Insulating Materials (AREA)
Abstract
This case is related to a kind of insulating film of transformer coil, is successively arranged the first insulating coating, aramid fiber, the first adhesive layer, substrate layer, the second adhesive layer, vinylon and the second insulating coating from top to bottom；First insulating coating and the second insulating coating include the material of following parts by weight: 100 parts by weight of polybutylene terephthalate；22~24 parts by weight of polyamide；14~18 parts by weight of fluororesin；6~12 parts by weight of boron oxide；2~3 parts by weight of fluorinated ethylene carbonate.The present invention is by introducing the polymer of polyamide and fluororesin come the tensile strength of regulation system entirety, can obtain good balance under the premise of guaranteeing that insulating film has high-electric breakdown performance and high heat resistance；Meanwhile the inorganic additive composition of compounding and resin system have compatible with property, and protective film can be made to obtain higher insulating properties, heat resistance and electric breakdown strength.
Description
Technical field
The present invention relates to a kind of insulating films, and in particular to a kind of insulating film of transformer coil.
Background technique
The coil of transformer is the electric loop that transformer outputs and inputs electric energy, it is formed by copper, aluminum conductor coiling, line
Circle must have enough electrical strengths and mechanical strength, to guarantee that transformer can reliably be run.Therefore in coil winding
Turn-to-turn and interlayer must apply enough insulating materials, to guarantee interlayer and turn-to-turn insulation without breakdown.With transformer
Development, more stringent requirements are proposed for interlayer dielectic wrapped for coil therein, and material property in the prior art is
The needs of transformer development cannot be fully met.Specific defect is main are as follows: the high temperature resistant and high-electric breakdown strength of material surface are not
Foot, limited mechanical strength etc..
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of insulating film of transformer coil,
High temperature resistant, high-electric breakdown strength are excellent, service life with higher.
To achieve the goals above, technical solution of the present invention is summarized as follows:
A kind of insulating film of transformer coil, wherein it is fine that it is successively arranged the first insulating coating, fragrant amide from top to bottom
Dimension, the first adhesive layer, substrate layer, the second adhesive layer, vinylon and the second insulating coating；
Wherein, first insulating coating and the second insulating coating include the material of following parts by weight:
Preferably, the insulating film of the transformer coil, wherein further include the silicon carbide of 2~3 parts by weight.
Preferably, the insulating film of the transformer coil, wherein further include the aluminium nitride of 2~3 parts by weight.
Preferably, the insulating film of the transformer coil, wherein further include the Ca (Ti of 1~2 parts by weightxZr1-x)
O3。
Preferably, the insulating film of the transformer coil, wherein in the Ca (TixZr1-x)O3In, 0.5≤x≤
0.7。
Preferably, the insulating film of the transformer coil, wherein the fluororesin includes the poly- trifluoro of 30~40wt%
Vinyl chloride and 60~70wt% ethylene-tetrafluoroethylene-hexafluoropropylene copolymer.
Preferably, the insulating film of the transformer coil, wherein the ethylene-tetrafluoroethylene-hexafluoropropene copolymerization
In object, ethylene contents are 20~22wt%, and hexafluoropropene content is 8~10wt%, remaining is tetrafluoroethene.
Preferably, the insulating film of the transformer coil, wherein the number of the polybutylene terephthalate is divided equally
Son amount is 15000~16000g/mol, and the number-average molecular weight of the polyamide is 3000~3200g/mol.
The beneficial effects of the present invention are: the present invention is by introducing the polymer of polyamide and fluororesin come regulation system
Whole tensile strength, can be obtained under the premise of guaranteeing that insulating film has high-electric breakdown performance and high heat resistance
Balance well；Meanwhile the inorganic additive composition of compounding and resin system have compatible with property, can make protective film
Obtain higher insulating properties, heat resistance and electric breakdown strength.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
This case propose an embodiment transformer coil insulating film, be successively arranged from top to bottom the first insulating coating,
Aramid fiber, the first adhesive layer, substrate layer, the second adhesive layer, vinylon and the second insulating coating；
Substrate layer can be selected from polyamide film, and the first adhesive layer and the second adhesive layer can choose span and carry out amide modifications polyurethane
Adhesive.
Wherein, the first insulating coating and the second insulating coating include the material of following parts by weight:
Polybutylene terephthalate has excellent obdurability, fatigue durability, wearability, but intolerant to strong acid, highly basic, receives
Shrinkage is big；Its resistance to strong acid and strong basicity resisting energy are improved by the way that fluororesin is added；Its mechanicalness is improved by the way that polyamide is added
Energy, heat resistance, wear resistance and chemical resistance；Its ageing-resistant performance is improved by the way that boron oxide is added；By the way that fluoro is added
Ethylene carbonate improves its thermal stability.
It further include the silicon carbide of 2~3 parts by weight as the another embodiment of this case.Its electric shock is improved by the way that silicon carbide is added
Wear intensity and high temperature resistance.
It further include the aluminium nitride of 2~3 parts by weight as the another embodiment of this case.By the way that aluminium nitride and silicon carbide association is added
It is same to improve its electric breakdown strength and high temperature resistance.
It further include the Ca (Ti of 1~2 parts by weight as the another embodiment of this casexZr1-x)O3.By the way that Ca (Ti is addedxZr1-x)
O3Its electric breakdown strength is improved, and improves its electrical insulation capability with aluminium nitride, silicon carbide collaboration.
As the another embodiment of this case, in Ca (TixZr1-x)O3In, 0.5≤x≤0.7.
As the another embodiment of this case, fluororesin includes 30~40wt% polytrifluorochloroethylene and 60~70wt% ethylene-
Tetrafluoraoethylene-hexafluoropropylene copolymer.It is mentioned by polytrifluorochloroethylene and ethylene-tetrafluoroethylene-hexafluoropropylene copolymer collaboration
The strong alkali-acid resistance ability of high insulating film and adhesion strength with aramid fiber, vinylon.
As the another embodiment of this case, in ethylene-tetrafluoroethylene-hexafluoropropylene copolymer, ethylene contents are 20~
22wt%, hexafluoropropene content are 8~10wt%, remaining is tetrafluoroethene.By the study found that when to ethylene-tetrafluoroethylene-
After the proportion of ethylene, tetrafluoroethene and hexafluoropropene is defined in hexafluoropropylene copolymer, more preferably acid and alkali-resistance energy can get
Power and adhesion strength, therefore the ratio of three should be restricted.
As the another embodiment of this case, the number-average molecular weight of polybutylene terephthalate is 15000~16000g/mol,
The number-average molecular weight of polyamide is 3000~3200g/mol.
Table one lists the concrete composition and its performance ginseng of the insulating film containing different formulations of embodiment 1-3 and comparative example 1-5
Number:
Table one
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details.
Claims (8)
1. a kind of insulating film of transformer coil, which is characterized in that it is successively arranged the first insulating coating, fragrant amide from top to bottom
Fiber, the first adhesive layer, substrate layer, the second adhesive layer, vinylon and the second insulating coating；
Wherein, first insulating coating and the second insulating coating include the material of following parts by weight:
2. the insulating film of transformer coil according to claim 1, which is characterized in that further include the carbonization of 2~3 parts by weight
Silicon.
3. the insulating film of transformer coil according to claim 1, which is characterized in that further include the nitridation of 2~3 parts by weight
Aluminium.
4. the insulating film of transformer coil according to claim 1, which is characterized in that further include the Ca of 1~2 parts by weight
(TixZr1-x)O3。
5. the insulating film of transformer coil according to claim 4, which is characterized in that in the Ca (TixZr1-x)O3In,
0.5≤x≤0.7。
6. the insulating film of transformer coil according to claim 1, which is characterized in that the fluororesin include 30~
40wt% polytrifluorochloroethylene and 60~70wt% ethylene-tetrafluoroethylene-hexafluoropropylene copolymer.
7. the insulating film of transformer coil according to claim 6, which is characterized in that the ethylene-tetrafluoroethylene-hexafluoro
In propylene copolymer, ethylene contents are 20~22wt%, and hexafluoropropene content is 8~10wt%, remaining is tetrafluoroethene.
8. the insulating film of transformer coil according to claim 1, which is characterized in that the polybutylene terephthalate
Number-average molecular weight be 15000~16000g/mol, the number-average molecular weight of the polyamide is 3000~3200g/mol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637623.8A CN108987072A (en) | 2018-06-20 | 2018-06-20 | The insulating film of transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637623.8A CN108987072A (en) | 2018-06-20 | 2018-06-20 | The insulating film of transformer coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108987072A true CN108987072A (en) | 2018-12-11 |
Family
ID=64541516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810637623.8A Pending CN108987072A (en) | 2018-06-20 | 2018-06-20 | The insulating film of transformer coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108987072A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160798A (en) * | 2017-06-16 | 2017-09-15 | 国网江苏省电力公司盐城供电公司 | The dielectric film wrapped for dry-type transformer coil |
| CN107611356A (en) * | 2017-07-18 | 2018-01-19 | 深圳市沃特玛电池有限公司 | A kind of silicon-carbon cathode lithium ion battery |
-
2018
- 2018-06-20 CN CN201810637623.8A patent/CN108987072A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160798A (en) * | 2017-06-16 | 2017-09-15 | 国网江苏省电力公司盐城供电公司 | The dielectric film wrapped for dry-type transformer coil |
| CN107611356A (en) * | 2017-07-18 | 2018-01-19 | 深圳市沃特玛电池有限公司 | A kind of silicon-carbon cathode lithium ion battery |
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Application publication date: 20181211 |