CN219916754U - Small-diameter lightweight foamed insulating coaxial cable - Google Patents
Small-diameter lightweight foamed insulating coaxial cable Download PDFInfo
- Publication number
- CN219916754U CN219916754U CN202321256295.XU CN202321256295U CN219916754U CN 219916754 U CN219916754 U CN 219916754U CN 202321256295 U CN202321256295 U CN 202321256295U CN 219916754 U CN219916754 U CN 219916754U
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- layer
- coaxial cable
- diameter
- inner conductor
- conductive fiber
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- 239000004020 conductor Substances 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 claims abstract description 12
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000004677 Nylon Substances 0.000 claims abstract description 9
- 229920001778 nylon Polymers 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 125000003118 aryl group Chemical group 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 49
- 238000009413 insulation Methods 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 10
- 238000005187 foaming Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 7
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 6
- 229920006240 drawn fiber Polymers 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a small-diameter lightweight foamed insulating coaxial cable which comprises an inner conductor, a foamed fluororesin insulating layer, a semiconductive nylon resin layer, a conductive fiber shielding layer and a tetrafluoroethylene propylene copolymer fluororubber sheath layer, wherein the inner conductor is formed by twisting a plurality of tin-plated copper wires and para-type wholly aromatic copolyamide stretching fibers together, the outer diameter of the inner conductor is 0.05mm to 0.08mm, the thickness of the semiconductive nylon resin layer is 0.01mm to 0.02mm, the thickness of the conductive fiber shielding layer is 0.02mm to 0.03mm, the outer diameter of the foamed fluororesin insulating layer is 0.15mm to 0.25mm, and the outer diameter of the tetrafluoroethylene propylene copolymer fluororubber sheath layer is 0.22mm to 0.38mm. The coaxial cable realizes the requirements of small-diameter and light-weight preparation, has good mechanical strength and bending resistance, better flexibility and stable high-frequency signal transmission characteristic.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a small-diameter lightweight foamed insulating coaxial cable.
Background
Coaxial cable is one of the main varieties of wire and cable. Coaxial cables are required to have good flexibility and shielding properties. In an automatic industrial production line, electrical connection and control of a small robot, an electronic machine, and the like are required to be applied to a coaxial cable having good flexibility and bending resistance, which is required to have good assurance in long-distance high-frequency signal transmission characteristics. With the trend of reducing the diameter and light weight of the cable, the performance of the coaxial cable needs to consider the mechanical strength, the bending resistance and the stability of high-frequency signal transmission.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the small-diameter lightweight foamed insulating coaxial cable which is required for realizing small-diameter lightweight preparation, has good mechanical strength and bending resistance, better flexibility, prevents wire breakage and core breakage, and has stable high-frequency signal transmission characteristic and better durability.
The utility model solves the technical problems through the following technical proposal.
The utility model provides a thin-diameter lightweight foaming insulation coaxial cable, includes the inner conductor and cladding in proper order the outside foaming fluororesin insulating layer, semiconductive nylon resin layer, conductive fiber shielding layer and tetrafluoroethylene propylene copolymer fluororubber restrictive coating of inner conductor, the inner conductor comprises a plurality of tinned copper wires and the common transposition of the full aromatic copolyamide tensile fiber of counterpoint, the inner conductor external diameter is 0.05mm to 0.08mm, semiconductive nylon resin layer thickness is 0.01mm to 0.02mm, conductive fiber shielding layer thickness is 0.02mm to 0.03mm, foaming fluororesin insulating layer external diameter is 0.15mm to 0.25mm, tetrafluoroethylene propylene copolymer fluororubber restrictive coating external diameter is 0.22mm to 0.38mm.
Preferably, the conductive fiber shielding layer is of a conductive fiber bundle spiral winding structure, and the conductive fiber bundle is formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.
Preferably, the polyacrylonitrile-based carbon fiber has a wire diameter of not more than 25 μm.
Preferably, the foamed fluororesin insulation layer is a foamed fluororesin layer having a foaming ratio of 40% to 60%.
Preferably, the diameter of the tinned copper wire is 0.01mm or 0.02mm.
Preferably, the drawn fiber wire diameter of the para-type wholly aromatic copolyamide is not more than 50% of the diameter of the tin-plated copper wire.
Preferably, the inner conductor lay length is four to ten times the outer diameter of the inner conductor.
Preferably, a thermoplastic polyurethane adhesive layer is arranged on the inner surface of the tetrafluoroethylene propylene copolymer fluororubber sheath layer.
Preferably, the thermoplastic polyurethane adhesive layer has a thickness of 3 μm to 5 μm.
The utility model has the beneficial effects that:
1. and the structure of each layer of the coaxial cable is optimized, the thickness of each layer is thinned and reasonably optimized, and the original metal shielding layer is replaced by the conductive fiber shielding layer, so that the preparation with small diameter and light weight is realized. The foamed fluororesin insulating layer is beneficial to reducing friction between the insulating layer and the inner conductor, improving flexibility, reducing wire breakage and core breakage, enhancing mechanical strength, improving lateral pressure bearing performance of the cable, having better bending resistance, ensuring stability of high-frequency signal transmission characteristics and having better durability.
2. The para-type wholly aromatic copolyamide drawn fiber has large tensile elastic modulus, is beneficial to improving the flexibility and tensile strength of an inner conductor, reduces local stress concentration of the inner conductor, prevents deformation, yarn breakage and core breakage of the inner conductor, ensures the stability of high-frequency signal transmission characteristics, and is durable in use.
3. The conductive fiber bundles of the conductive fiber shielding layer are formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, so that the conductive fiber bundles can effectively replace a metal material shielding layer, effectively inhibit internal signals or noise from leaking to the outside and interference from external signals, lighten the weight of a cable, reduce the cost and realize the requirements of small-diameter light production on the basis of ensuring stable shielding performance.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.
Reference numerals: 1-an inner conductor, a 2-foamed fluororesin insulation layer, a 3-semiconductive nylon resin layer, 4-conductive fiber shielding layer, 5-tetrafluoroethylene propylene copolymer fluororubber sheath layer.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the foamed insulated coaxial cable with reduced diameter and light weight according to the embodiment of the utility model comprises an inner conductor 1, wherein the inner conductor 1 is formed by twisting a plurality of tinned copper wires and para-type wholly aromatic copolyamide drawn fibers together, the outer diameter of the inner conductor 1 is 0.05mm to 0.08mm, specifically, the diameter of the tinned copper wires is 0.01mm or 0.02mm, and further, the diameter of the para-type wholly aromatic copolyamide drawn fibers is not more than 50% of the diameter of the tinned copper wires. The inner conductor 1 has a lay length of four to ten times the outer diameter of the inner conductor 1. The inner conductor 1 is sequentially coated with a foaming fluororesin insulation layer 2, a semiconductive nylon resin layer 3, a conductive fiber shielding layer 4 and a tetrafluoroethylene propylene copolymer fluororubber sheath layer 5, further, the inner surface of the tetrafluoroethylene propylene copolymer fluororubber sheath layer 5 is provided with a thermoplastic polyurethane bonding layer, and the thickness of the thermoplastic polyurethane bonding layer is 3-5 mu m. Specifically, the foamed fluororesin insulation layer 2 is a foamed fluororesin layer having a foaming ratio of 40% to 60%. The outer diameter of the foamed fluororesin insulation layer 2 is 0.15mm to 0.25mm. The thickness of the semiconductive nylon resin layer 3 is 0.01mm to 0.02mm. The thickness of the conductive fiber shielding layer 4 is 0.02mm to 0.03mm, in one embodiment, the conductive fiber shielding layer 4 is in a conductive fiber bundle spiral winding structure, the conductive fiber bundle is formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coating, and the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 mu m. The outer diameter of the tetrafluoroethylene propylene copolymer fluororubber sheath layer 5 is 0.22mm to 0.38mm.
The foregoing is merely illustrative of the present utility model, and the scope of the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a thin diameter lightweight foaming insulation coaxial cable which characterized in that: the novel high-voltage insulation composite material comprises an inner conductor (1) and a foaming fluororesin insulation layer (2), a semiconductive nylon resin layer (3), a conductive fiber shielding layer (4) and a tetrafluoroethylene propylene copolymer fluororubber sheath layer (5) which are sequentially coated outside the inner conductor (1), wherein the inner conductor (1) is formed by twisting a plurality of tin-plated copper wires and para-type wholly aromatic copolyamide stretching fibers together, the outer diameter of the inner conductor (1) is 0.05mm to 0.08mm, the thickness of the semiconductive nylon resin layer (3) is 0.01mm to 0.02mm, the thickness of the conductive fiber shielding layer (4) is 0.02mm to 0.03mm, the outer diameter of the foaming fluororesin insulation layer (2) is 0.15mm to 0.25mm, and the outer diameter of the tetrafluoroethylene propylene copolymer fluororubber sheath layer (5) is 0.22mm to 0.38mm.
2. The reduced diameter lightweight foamed insulated coaxial cable of claim 1, wherein: the conductive fiber shielding layer (4) is of a conductive fiber bundle spiral winding structure, and the conductive fiber bundle is formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.
3. The reduced diameter lightweight foamed insulated coaxial cable of claim 2, wherein: the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 25 mu m.
4. The reduced diameter lightweight foamed insulated coaxial cable of claim 1, wherein: the foamed fluororesin insulation layer (2) is a foamed fluororesin layer having a foaming ratio of 40% to 60%.
5. The reduced diameter lightweight foamed insulated coaxial cable of claim 1, wherein: the diameter of the tinned copper wire is 0.01mm or 0.02mm.
6. The reduced diameter lightweight foamed insulated coaxial cable of claim 5, wherein: the diameter of the para-type wholly aromatic copolyamide drawn fiber is not more than 50% of the diameter of the tinned copper wire.
7. The reduced diameter lightweight foamed insulated coaxial cable of claim 1, wherein: the inner conductor (1) has a lay length of four to ten times the outer diameter of the inner conductor (1).
8. The reduced diameter lightweight foamed insulated coaxial cable of claim 1, wherein: the inner surface of the tetrafluoroethylene propylene copolymer fluororubber sheath layer (5) is provided with a thermoplastic polyurethane bonding layer.
9. The reduced diameter lightweight foamed insulated coaxial cable of claim 8, wherein: the thermoplastic polyurethane adhesive layer has a thickness of 3 μm to 5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321256295.XU CN219916754U (en) | 2023-05-23 | 2023-05-23 | Small-diameter lightweight foamed insulating coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321256295.XU CN219916754U (en) | 2023-05-23 | 2023-05-23 | Small-diameter lightweight foamed insulating coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219916754U true CN219916754U (en) | 2023-10-27 |
Family
ID=88425457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321256295.XU Active CN219916754U (en) | 2023-05-23 | 2023-05-23 | Small-diameter lightweight foamed insulating coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219916754U (en) |
-
2023
- 2023-05-23 CN CN202321256295.XU patent/CN219916754U/en active Active
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