CN220447373U - Corona-resistant mica paper - Google Patents
Corona-resistant mica paper Download PDFInfo
- Publication number
- CN220447373U CN220447373U CN202321801596.6U CN202321801596U CN220447373U CN 220447373 U CN220447373 U CN 220447373U CN 202321801596 U CN202321801596 U CN 202321801596U CN 220447373 U CN220447373 U CN 220447373U
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- China
- Prior art keywords
- layer
- mica paper
- corona
- film layer
- monolayer
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- 239000010445 mica Substances 0.000 title claims abstract description 72
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 72
- 239000010410 layer Substances 0.000 claims abstract description 94
- 239000002356 single layer Substances 0.000 claims abstract description 39
- 239000000835 fiber Substances 0.000 claims abstract description 30
- 229920000642 polymer Polymers 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 239000012790 adhesive layer Substances 0.000 claims abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 238000007747 plating Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 9
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 150000001408 amides Chemical class 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052628 phlogopite Inorganic materials 0.000 claims description 3
- 229920002492 poly(sulfone) Polymers 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 2
- 229920002312 polyamide-imide Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 229920006335 epoxy glue Polymers 0.000 claims 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000004513 sizing Methods 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Laminated Bodies (AREA)
- Insulating Bodies (AREA)
Abstract
The utility model discloses corona-resistant mica paper, which comprises a second mica paper monolayer serving as a substrate and a first mica paper monolayer serving as a surface layer; a corona-resistant reinforcing layer is formed between the second mica paper single layer and the first mica paper single layer; the corona-resistant enhancement layer comprises a high polymer insulation film layer attached to the surface of the second mica paper monolayer, array holes are formed in the surface of the high polymer insulation film layer, an insulation fiber layer is formed in the surface of the high polymer insulation film layer, and the surface of the insulation fiber layer is sealed by an adhesive layer; and a graphene layer is formed between the polymer insulating film layer and the first mica paper monolayer, and the single-side surface of the graphene layer is plated with nickel and is attached to the outer surface of the adhesive layer at the nickel plating side. The mica paper has the advantage of good corona resistance, and can be used for meeting the corona resistance insulation requirement of a motor and prolonging the service life of the motor.
Description
Technical Field
The utility model relates to the technical field of electronic materials, in particular to corona-resistant mica paper mainly applied to electronic products.
Background
Along with the development of power electronic technology, the variable frequency speed regulation technology of the motor is rapidly promoted, in the field of variable frequency motors, pulse waves generated by the IGBT and PWM speed regulation device for frequency conversion have high voltage peaks, corresponding peaks have steep rising voltage, and the corresponding peaks have extremely high frequency, so that the insulation materials have certain damage effects, turn-to-turn breakdown easily occurs in a coil area of the variable frequency motor, the service life of the motor is greatly reduced, and the insulation materials capable of resisting corona must be used.
Mica paper is used as a type of insulating material, is a secondary processed product of mica, has the main performance of mica, has excellent electrical performance such as high electrical strength, low dielectric loss, high surface resistance and volume resistance, heat resistance, water resistance, chemical stability, elasticity, shearing resistance and tensile strength, and is commonly used as an insulating wrapping material of wires; with the improvement of technical indexes of motors in the prior art, the technical indexes of the motors are higher in requirements on insulating materials, so that the existing single-material mica paper on the market is difficult to meet higher and higher use requirements, and therefore, the insulating materials with high heat resistance level, high voltage breakdown resistance, high insulating property, excellent high-frequency pulse resistance and corona resistance are developed, and the technical requirements of related fields can be better met.
Disclosure of Invention
The utility model solves the technical problem of providing corona-resistant mica paper to solve the defects in the background technology.
The technical problems solved by the utility model are realized by adopting the following technical scheme:
a corona resistant mica paper comprising a second mica paper monolayer as a substrate and a first mica paper monolayer as a topcoat; a corona-resistant reinforcing layer is formed between the second mica paper single layer and the first mica paper single layer; the corona-resistant enhancement layer comprises a high polymer insulation film layer attached to the surface of the second mica paper monolayer, array holes are formed in the surface of the high polymer insulation film layer, an insulation fiber layer is formed in the surface of the high polymer insulation film layer, and the surface of the insulation fiber layer is sealed by an adhesive layer; and a graphene layer is formed between the polymer insulating film layer and the first mica paper monolayer, and the single-side surface of the graphene layer is plated with nickel and is attached to the outer surface of the adhesive layer at the nickel plating side.
As a further limitation, the thickness of the second mica paper monolayer is 0.08 to 0.12mm, preferably phlogopite paper or synthetic mica paper; the thickness of the first mica paper monolayer is 0.05-0.08 mm, and preferably synthetic mica paper.
As a further limitation, the polymer insulating film layer is a polyamide imide film layer or a polyimide film layer.
By way of further limitation, the thickness of the polymer insulating film layer is 0.02 to 0.03mm, the aperture of the array holes formed in the polymer insulating film layer is 1 to 3mm, and the ratio of the sum of the areas of the array holes per unit area to the unit area of the polymer insulating film layer is 25 to 35%.
By way of further limitation, the insulating fiber filled in the insulating fiber layer is one of alkali-free glass fiber, ceramic fiber, aromatic polyamide fiber, aromatic polysulfone amide fiber, and oxadiazole fiber.
As a further limitation, the adhesive layer is preferably an epoxy adhesive layer, and the thickness of the adhesive layer is controlled to be 0.03-0.06 mm.
As a further limitation, the first mica paper monolayer and the graphene layer are bonded through an outer adhesive layer in a pressing mode, and the thickness of the outer adhesive layer is 0.02-0.03 mm.
By way of further limitation, the graphene layer is a single layer graphene or a bilayer graphene.
The beneficial effects are that: the corona-resistant mica paper can keep the physical and electrical properties of the mica paper, improves corona resistance of the mica paper through the combination of the polymer insulating film layer and the insulating fiber layer, can also resist thermal shock for the mica paper tape, is convenient for secondary processing, and can effectively improve the heat resistance grade, high voltage breakdown resistance and high-frequency pulse corona resistance of corresponding windings or binding surfaces when the mica paper is used as an insulating material, so as to meet the insulating use requirements in corresponding motor products.
Drawings
FIG. 1 is a schematic view of a peeling structure according to a preferred embodiment of the present utility model.
Wherein: 1. a first monolayer of mica paper; 2. an outer adhesive layer; 3. a graphene layer; 4. a glue layer; 5. an insulating fiber layer; 6. a polymer insulating film layer; 7. an array hole; 8. a second mica paper monolayer.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
Referring to a preferred embodiment of the corona resistant mica paper of fig. 1, in this embodiment, the corona resistant mica paper has two mica paper monolayers, namely a second mica paper monolayer 8 as a substrate and a first mica paper monolayer 1 as a facing layer, wherein the second mica paper monolayer 8 is used to maintain the main properties of the mica paper, in this embodiment, a synthetic mica paper layer with a thickness of 0.1mm, and in other embodiments, a phlogopite paper with better service properties may also be used for the second mica paper monolayer 8; the first mica paper single layer 1 is positioned to assist in maintaining the main properties of the mica paper and to close the insulating surface of the whole mica paper, which is a layer of synthetic mica paper with a thickness of 0.1 mm.
A corona-resistant enhancement layer is formed between the second mica paper monolayer 8 and the first mica paper monolayer 1, the main body of the corona-resistant enhancement layer is a layer of polymer insulation film layer 6, the polymer insulation film layer 6 is a polyimide film layer with the thickness of 0.03mm in the embodiment, an array hole 7 is formed on the surface of the polyimide film layer in a surface punching mode, the polymer insulation film layer 6 is attached to the second mica paper monolayer 8 on one side surface, and an insulation fiber layer 5 and a graphene layer 3 are formed on the other side surface in sequence.
The single pore diameter of the array pores 7 on the polymer insulating film layer 6 is 2-3 mm, and the sum of the areas of the array pores 7 on the unit area is 25% of the unit area of the polymer insulating film layer. The arrangement of the array holes 7 enables the mica paper obtained through final forming to have better air permeability on the high-molecular insulating film layer 6, and meanwhile, when the surface of the high-molecular insulating film layer 6 is sized, sizing materials in the sizing material 4 applied to the surface of the high-molecular insulating film layer 6 sequentially permeate the insulating fiber layer 5 and the array holes 7 on the high-molecular insulating film layer 6 and are adhered to the second mica paper single layer 8 for forming, and in order to enable the sizing material 4 to realize sizing in the hot pressing process on the basis of considering mica quantification in the mica paper, the thickness of the sizing material 4 is controlled to be 0.05mm, and the sizing material viscosity adopted in the sizing material 4 is controlled to be below 600 mPa.s.
The corresponding insulating fiber layer 5 is mainly used for combining with the polymer insulating film layer 6 and the graphene layer 3 to form a single-side effective corona-resistant composite structure layer, and in order to achieve the above effect, the insulating fiber filled in the insulating fiber layer 5 may be one of alkali-free glass fiber, ceramic fiber, aromatic polyamide fiber, aromatic polysulfone amide fiber and oxadiazole fiber, and in this embodiment, alkali-free glass fiber with lower use cost is adopted.
The other side of the adhesive layer 4 is a graphene layer 3 formed by a layer of single-layer graphene, and the graphene layer 3, the insulating fiber layer 5 and the high-polymer insulating film layer 6 can be formed into a whole through pressure sizing.
In this embodiment, an outer glue layer 2 with a thickness of 0.02mm is formed on the outer side of the graphene layer 3, the outer glue layer 2 and the glue layer 4 are formed by modified epoxy resin glue powder in this embodiment, and corresponding glue powder is uniformly coated on a corresponding surface in an electrostatic spraying manner during forming, and then hot-pressing composite forming is performed. The graphene layer 3 is adhered with the first mica paper single layer 1 into a whole by taking the outer adhesive layer 2 as an adhesive structure; thus, the formed mica paper is obtained, and the mica paper also has a thinner thickness.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (9)
1. A corona resistant mica paper, comprising a second mica paper monolayer as a substrate and a first mica paper monolayer as a topcoat; a corona-resistant reinforcing layer is formed between the second mica paper single layer and the first mica paper single layer; the corona-resistant enhancement layer comprises a high polymer insulation film layer attached to the surface of the second mica paper monolayer, array holes are formed in the surface of the high polymer insulation film layer, an insulation fiber layer is formed in the surface of the high polymer insulation film layer, and the surface of the insulation fiber layer is sealed by an adhesive layer; and a graphene layer is formed between the polymer insulating film layer and the first mica paper monolayer, and the single-side surface of the graphene layer is plated with nickel and is attached to the outer surface of the adhesive layer at the nickel plating side.
2. The corona resistant mica paper according to claim 1, wherein the second mica paper monolayer is made of phlogopite paper or synthetic mica paper with a thickness of 0.08-0.12 mm.
3. The corona resistant mica paper of claim 1, wherein the first mica paper monolayer is a synthetic mica paper having a thickness of 0.05 to 0.08 mm.
4. The corona resistant mica paper of claim 1, wherein the polymeric insulating film layer is a polyamide imide film layer or a polyimide film layer.
5. The corona resistant mica paper according to claim 1, wherein the thickness of the polymer insulating film layer is 0.02-0.03 mm, the aperture of the array holes formed on the polymer insulating film layer is 1-3 mm, and the ratio of the sum of the areas of the array holes per unit area to the unit area of the polymer insulating film layer is 25-35%.
6. The corona resistant mica paper of claim 1, wherein the insulating fiber filled in the insulating fiber layer is one of alkali free glass fiber, ceramic fiber, aromatic polyamide fiber, aromatic polysulfone amide fiber, and oxadiazole fiber.
7. The corona resistant mica paper according to claim 1, wherein the glue layer is an epoxy glue layer with a thickness of 0.03-0.06 mm.
8. The corona resistant mica paper according to claim 1, wherein the first mica paper monolayer is bonded with the graphene layer through an outer glue layer in a pressing manner, and the thickness of the outer glue layer is 0.02-0.03 mm.
9. The corona resistant mica paper of claim 1, wherein the graphene layer is a single layer graphene or a double layer graphene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801596.6U CN220447373U (en) | 2023-07-11 | 2023-07-11 | Corona-resistant mica paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801596.6U CN220447373U (en) | 2023-07-11 | 2023-07-11 | Corona-resistant mica paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220447373U true CN220447373U (en) | 2024-02-06 |
Family
ID=89739076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321801596.6U Active CN220447373U (en) | 2023-07-11 | 2023-07-11 | Corona-resistant mica paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220447373U (en) |
-
2023
- 2023-07-11 CN CN202321801596.6U patent/CN220447373U/en active Active
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