CN220995705U - Flexible mica tape - Google Patents
Flexible mica tape Download PDFInfo
- Publication number
- CN220995705U CN220995705U CN202322771029.7U CN202322771029U CN220995705U CN 220995705 U CN220995705 U CN 220995705U CN 202322771029 U CN202322771029 U CN 202322771029U CN 220995705 U CN220995705 U CN 220995705U
- Authority
- CN
- China
- Prior art keywords
- layer
- holes
- film layer
- mica tape
- mica
- 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.)
- Active
Links
- 239000010445 mica Substances 0.000 title claims abstract description 78
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 78
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 229920001721 polyimide Polymers 0.000 claims abstract description 23
- 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
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 229910052628 phlogopite Inorganic materials 0.000 claims description 4
- 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 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 66
- 238000003892 spreading Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- ICXAPFWGVRTEKV-UHFFFAOYSA-N 2-[4-(1,3-benzoxazol-2-yl)phenyl]-1,3-benzoxazole Chemical compound C1=CC=C2OC(C3=CC=C(C=C3)C=3OC4=CC=CC=C4N=3)=NC2=C1 ICXAPFWGVRTEKV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 230000000704 physical effect Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Insulating Bodies (AREA)
Abstract
The utility model discloses a flexible mica tape, which comprises two mica paper layers, wherein a composite structure layer is formed between the two mica paper layers; the composite structure layer comprises a porous graphene film layer and a porous polyimide film layer; dot matrix holes are formed in the porous graphene film layer, through holes which are arranged in parallel in an array mode are formed in the porous polyimide film layer, and the through holes are wavy strip holes or waist-shaped strip holes; the fiber reinforcement layer is formed between the porous graphene film layer and the porous polyimide film layer; each structural layer of the composite structural layer is adhered and fixed with the mica paper layer through an adhesive. The mica tape disclosed by the utility model can be used for obviously improving the overall structural performance of the mica tape including tensile strength and elongation at break while ensuring the electrical performance of the mica tape.
Description
Technical Field
The utility model relates to the field of insulating mica products, in particular to a flexible mica tape.
Background
Mica is used as a kind of naturally generated lamellar silicate mineral, has excellent physical properties and electrical properties and the characteristic of maintaining the properties at a high temperature, and has wide application in the electrical industry. The mica tape is an insulating material which is formed by baking and drying mica paper, glass fiber cloth and other reinforcing materials matched with proper adhesives and then cutting the mica paper, has the electrical property of the mica paper, and simultaneously has excellent high temperature resistance, combustion resistance, stronger softness and tensile force, and plays a certain role in reinforcing and strengthening wires and cables.
The reinforcing materials adopted by the mica tape in the prior art mainly comprise fiber cloth and film materials, wherein the film materials adopted by the mica tape mainly comprise polyimide film mica tape and polyester film mica tape, but the two film materials cannot meet satisfactory requirements on heat resistance, mechanical property and electric insulation property; along with the development of the power industry, modern power generation equipment and power transmission equipment gradually develop to high voltage and large capacity, higher requirements are provided for certain specific properties of the mica tape, such as high temperature tolerance, strength property, insulating property and the like, and in the preparation process of the existing mica tape, the preparation raw materials are single and can not be mixed with various raw materials, so that the mica tape has certain defects in physical tearing resistance while meeting the insulating property requirements in the insulating application of the electric industry, and the development of related equipment to the directions of high voltage, large capacity and high performance is restricted.
Disclosure of utility model
The technical problem solved by the utility model is to provide a flexible mica tape so as 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 flexible mica tape comprises two mica paper layers, wherein a composite structure layer is formed between the two mica paper layers;
the composite structure layer comprises a porous graphene film layer and a porous polyimide film layer; dot matrix holes with the aperture of 3-5 mm are formed in the porous graphene film layer, through holes which are arranged in parallel in an array shape are formed in the porous polyimide film layer, the through holes are wavy strip holes or waist-shaped strip holes, the hole length of the through holes is 8-15 mm, the length direction of the through holes is parallel to the length direction of the flexible mica tape, and the hole width of the through holes is 0.8-1.2 mm;
the fiber reinforcement layer is formed between the porous graphene film layer and the porous polyimide film layer;
each structural layer of the composite structural layer is adhered and fixed with the mica paper layer through an adhesive.
As a further limitation, the mica paper layer is a white mica paper, a sericite paper, a phlogopite paper or a synthetic mica paper, which is obtained by cutting and molding.
As a further limitation, the flexible mica tape has an overall thickness of 80-200 μm, and the sum of the thicknesses of the two mica paper layers is 45% or more of the thickness of the flexible mica tape.
As a further limitation, the lattice holes formed by the porous graphene film layer are round holes or regular polygon holes, and the area ratio of the lattice holes on the porous graphene film layer is 20-30%.
By way of further limitation, the area of the through holes formed in the perforated polyimide film layer is 25 to 35 percent of the area of the perforated polyimide film layer.
As a further limitation, the fiber reinforcement layer is a fiber-filled layer, and the filled fibers used in the fiber-filled layer are para-aramid copolyfibers or poly-para-phenylene benzobisoxazole fibers.
As a further definition, the fiber reinforcement layer is a fiber mesh or a fiber cloth cover; the fiber web surface is preferably a glass fiber web surface or a ceramic fiber web surface; the fiber cloth cover is preferably a glass fiber cloth cover.
The beneficial effects are that: the flexible mica tape disclosed by the utility model can be adapted to different types of mica paper layers, can bring excellent wrapping performance and mechanical performance to the mica tape through the combination of the graphene film layer, the porous polyimide film layer and the fiber reinforcing layer, can meet the bonding performance of the mica tape under the conditions of continuous bending, external force impact and thermal strain impact of a cable under the condition of meeting the electrical insulation performance of wires, and has better flame retardant and water vapor resistance.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model.
Wherein: 1. a first mica paper layer; 2. a porous graphene film layer; 3. dot matrix holes; 4. a fiber reinforcement layer; 5. a through hole; 6. a polyimide film layer with holes; 7. and a second mica paper layer.
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 fig. 1, the flexible mica tape according to the preferred embodiment of the present utility model includes a first mica paper layer 1 and a second mica paper layer 7 as both side layers, wherein the first mica paper layer 1 and the second mica paper layer 7 may be one of white mica paper, sericite paper, phlogopite paper or synthetic mica paper in different embodiments, and are obtained by post-forming in a cutting manner. In this example, the first mica paper layer 1 and the second mica paper layer 7 were each made of the same batch of phlogopite paper with a basis weight of 120g/m 2.
A composite structure layer is formed between the first mica paper layer 1 and the second mica paper layer 7, and comprises a porous graphene film layer 2, a fiber reinforced layer 4 and a porous polyimide film layer 6.
Dot matrix holes 3 with the aperture of 3mm are formed in the porous graphene film layer 2, the dot matrix holes 3 are regular hexagon holes, and the proportion of the dot matrix holes 3 on the unit area of the porous graphene film layer 2 is 24%; the polyimide film layer 6 with holes is provided with through holes 5 which are arranged in parallel in an array manner, the through holes 5 which are arranged in parallel in an array manner are waist-shaped strip holes, the hole length of the through holes 5 is 8mm, the length direction of the through holes is parallel to the length direction of the belt body of the flexible mica tape, the hole width of the through holes 5 is 10mm, and the area ratio of the through holes 5 on the polyimide film layer 6 with holes is 25%.
The fiber reinforced layer 4 is formed between the porous graphene film layer 2 and the porous polyimide film layer 6, and in different embodiments, the fiber reinforced layer 4 has two formed structural forms, one is formed by directly paving reinforced fiber mica between the porous graphene film layer 2 and the porous polyimide film layer 6, filling fibers adopted by the fiber reinforced layer are para-aramid copolymer fibers or poly-p-phenylene benzobisoxazole fibers, the filament diameter of the corresponding fiber monofilament is below 10 mu m, and the thickness of the single-layer paving is controlled to be 10-15 mu m; and the other is that a fiber net surface or a fiber cloth surface is directly adopted to be attached between the porous graphene film layer 2 and the porous polyimide film layer 6, wherein the available fiber net surface is a glass fiber net surface or a ceramic fiber net surface with the thickness of 10-20 mu m, and the available fiber cloth surface is a glass fiber cloth surface with the thickness of 10-15 mu m.
When the flexible mica tape is formed, firstly spreading a second mica paper layer 7, spreading a porous polyimide film layer 6 on the surface of the second mica paper layer, then applying glue, spreading a fiber reinforced layer 4, sequentially spreading a porous graphene film layer 2 and a first mica paper layer 1 after the surface of the fiber reinforced layer 4 is applied with glue, then carrying out hot-pressing compounding, and carrying out outer edge trimming after forming to obtain the finished flexible mica tape.
The utility model has the technical advantages that the utility model can adapt to different types of mica paper, provides better laminating property and mechanical strength gain for the mica paper, and solves the problems that the traditional high-quality mica paper has higher manufacturing cost as a raw material and the middle-low-quality mica paper is easy to generate structural damage due to bending in the use process; thereby increasing the application range of the medium-low quality mica paper.
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 (7)
1. The flexible mica tape is characterized by comprising two mica paper layers, wherein a composite structure layer is formed between the two mica paper layers;
the composite structure layer comprises a porous graphene film layer and a porous polyimide film layer; dot matrix holes with the aperture of 3-5 mm are formed in the porous graphene film layer, through holes which are arranged in parallel in an array shape are formed in the porous polyimide film layer, the through holes are wavy strip holes or waist-shaped strip holes, the hole length of the through holes is 8-15 mm, the length direction of the through holes is parallel to the length direction of the flexible mica tape, and the hole width of the through holes is 0.8-1.2 mm;
the fiber reinforcement layer is formed between the porous graphene film layer and the porous polyimide film layer;
each structural layer of the composite structural layer is adhered and fixed with the mica paper layer through an adhesive.
2. The flexible mica tape according to claim 1, wherein the mica paper layer is a white mica paper, a sericite paper, a phlogopite paper or a synthetic mica paper, which is obtained by cutting and molding.
3. The flexible mica tape according to claim 1, wherein the flexible mica tape has an overall thickness of 80 to 200 μm, and the sum of the thicknesses of the two mica paper layers is 45% or more of the thickness of the flexible mica tape.
4. The flexible mica tape of claim 1, wherein the lattice holes formed in the perforated graphene film layer are round holes or regular polygon holes, and the area ratio of the lattice holes on the perforated graphene film layer is 20-30%.
5. The flexible mica tape of claim 1, wherein the area of the through holes formed in the perforated polyimide film layer is 25-35% of the area of the perforated polyimide film layer.
6. The flexible mica tape according to claim 1, wherein the fiber reinforcement layer is a fiber-filled layer, and the filled fibers used in the fiber-filled layer are para-aramid co-fibers or poly-para-phenylene benzobisoxazole fibers.
7. The flexible mica tape of claim 1, wherein the fiber reinforcement layer is a fibrous web or a fibrous cloth cover; the fiber net surface is a glass fiber net surface or a ceramic fiber net surface; the fiber cloth cover is a glass fiber cloth cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322771029.7U CN220995705U (en) | 2023-10-17 | 2023-10-17 | Flexible mica tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322771029.7U CN220995705U (en) | 2023-10-17 | 2023-10-17 | Flexible mica tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220995705U true CN220995705U (en) | 2024-05-24 |
Family
ID=91122203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322771029.7U Active CN220995705U (en) | 2023-10-17 | 2023-10-17 | Flexible mica tape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220995705U (en) |
-
2023
- 2023-10-17 CN CN202322771029.7U patent/CN220995705U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4007537B2 (en) | Reinforced structure for rigid composite articles | |
| US5009734A (en) | Method of making an insulating support arm for an electric line pole | |
| CN217373758U (en) | Composite mica plate for thermal runaway management of new energy automobile | |
| CN220995705U (en) | Flexible mica tape | |
| CN205692585U (en) | Flexible new-energy automobile charging pile cable | |
| CN111560794B (en) | Bending-resistant composite mica paper tape and preparation method thereof | |
| KR20110124614A (en) | Carbon fiber heating seat and manufacturing method of heating seat using the same | |
| CN220995704U (en) | Tear-resistant mica tape | |
| CN205364713U (en) | Two paper tinsel self -adhesion aluminium foils of polymer non leak | |
| CN216980700U (en) | Be applied to thermal runaway protection low heat conduction mica composite between electric core | |
| CN218660794U (en) | Fiber reinforced aerogel structure and fiber reinforced aerogel battery heat insulation pad | |
| CN110130571A (en) | Composite sandwich plate, combined wall board and chassis | |
| CN219832324U (en) | Mica paper tape for winding | |
| EP0048760B1 (en) | Insulating paper | |
| JP3597426B2 (en) | Thermal conductive material | |
| CN220456175U (en) | Anti-stripping composite mica tape | |
| CN2814868Y (en) | Heating cushion and product mounted with the same heating cushion | |
| CN116021860B (en) | Mica tape for utilizing slurry with mixed particle size | |
| CN218804550U (en) | Composite mica tape with anti-crack structure | |
| CN214175736U (en) | Pliability enameled wire convenient to use | |
| CN218948600U (en) | Mica tape with reinforced edge wrapping | |
| CN217957639U (en) | Conductive cloth with oxidation resistance and flame retardance | |
| CN221641984U (en) | Flame-retardant glass fiber mat | |
| CN215527281U (en) | High-elasticity flexible shielding cable | |
| CN201511561U (en) | Hard polyurethane foam interlayer fireproof plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |