CN112820447A - Tensile 4-core communication cable and preparation method thereof - Google Patents
Tensile 4-core communication cable and preparation method thereof Download PDFInfo
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- CN112820447A CN112820447A CN202110224819.6A CN202110224819A CN112820447A CN 112820447 A CN112820447 A CN 112820447A CN 202110224819 A CN202110224819 A CN 202110224819A CN 112820447 A CN112820447 A CN 112820447A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/005—Quad constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0045—Cable-harnesses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/186—Sheaths comprising longitudinal lapped non-metallic layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1865—Sheaths comprising braided non-metallic layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a stretch-resistant 4-core communication cable and a preparation method thereof, wherein the cable comprises four insulating twisted-pair cable cores, a twisted-pair wholly aromatic copolyamide tensile fiber rope surrounds the four insulating twisted-pair cable cores and is twisted together with four polypropylene resin core rods to form a cable core, a shielding mesh conductor layer, a polyester fiber plain weave lapping layer, an AFRP (atomic frequency resonance) braid layer, a foamed polyvinyl chloride inner sheath and a polyvinyl chloride outer sheath are sequentially coated outside the cable core, each insulating twisted-pair cable core comprises two twisted-pair cable cores which are twisted to form a twisted-pair core, at least 1.2 circles of copper-plastic composite tape lapping layers are longitudinally lapped outside the twisted-pair core, the lapping terminal part of each copper-plastic composite tape lapping layer is arranged close to the shielding mesh conductor layer, each twisted-pair cable core comprises an inner conductor, a foamed polypropylene resin insulating layer and a. The cable has better tensile strength, less signal transmission attenuation and better shielding effect stability.
Description
Technical Field
The application belongs to the technical field of communication cables, and particularly relates to a stretch-resistant 4-core communication cable and a preparation method thereof.
Background
The communication cable is used for forming a channel for transmitting information to form a four-way and eight-way communication network. The method can be distinguished according to the aspects of laying, operating conditions, transmission frequency spectrum, cable core structure, insulating materials and the like. Due to rapid development of transmission technology, maintenance testing technology, and the like, communication cables are gradually becoming smaller in diameter and lighter in weight, and at the same time, the communication cables are also required to have good impedance characteristics, electrical insulation properties, and chemical stability. However, a common communication cable has general tensile strength and poor core flexibility, is easily extruded and deformed when being subjected to external pressure in the installation and use process, cannot normally maintain the circular section of the cable, is easy to break the core and the wire, has poor signal transmission characteristics, has unstable shielding effect and affects electrical characteristics.
Disclosure of Invention
This application is not enough to prior art, and the technical problem that solve provides a stretch-proofing 4 core communication cable, has better tensile strength, and resistant extrusion is difficult for disconnected core broken string, and signal transmission decay reduces, and shielding effect stability is better. Meanwhile, a preparation method of the stretch-resistant 4-core communication cable is also provided.
The present application solves the above-mentioned problems by the following technical solutions.
The tensile 4-core communication cable comprises four insulated twisted-pair wire cores, a para-type wholly aromatic copolyamide tensile fiber rope surrounds the insulated twisted-pair wire cores and is twisted with four polypropylene resin core rods together to form a cable core, the cable core is coated with a shielding mesh conductor layer, a polyester fiber plain weave lapping layer, an AFRP weaving layer, a foaming polyvinyl chloride inner sheath and a polyvinyl chloride outer sheath in sequence, the insulated twisted pair wire core comprises two twisted pair wire cores which are twisted to form a twisted pair core body, at least 1.2 circles of copper-plastic composite tape wrapping layers are longitudinally wrapped outside the twisted pair core body, the winding terminal part of the copper-plastic composite tape winding layer is close to the shielding mesh-shaped conductor layer, the pair-twisted wire core comprises an inner conductor, and a foamed polypropylene resin insulating layer and a polypropylene resin insulating layer which are sequentially coated outside the inner conductor, and the cable core lay length is larger than the pair-twisted wire core lay length.
Preferably, the inner conductor comprises three stranded wires, the stranded wires are formed by stranding a plurality of tin-plated copper monofilaments with the wire diameter of 0.02mm to 0.05mm and a plurality of para-type wholly aromatic copolyamide drawn fibers, and the lay length of the stranded wires is 15 to 30 times of the outer diameter of the inner conductor.
Preferably, the thickness ratio of the foamed polypropylene resin insulation layer to the polypropylene resin insulation layer is 1:1 to 1: 1.5.
Preferably, the copper-plastic composite tape wrapping layer is formed by longitudinally wrapping a copper-plastic composite tape, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer.
Preferably, the shielding mesh-shaped conductor layer is formed by spirally winding an inner layer of tinned copper wire and an outer layer of tinned copper wire in the same direction, the winding distance and the spiral angle of the inner layer of tinned copper wire and the outer layer of tinned copper wire are the same, the spiral angle is 50-70 degrees, the wire diameter of the inner layer of tinned copper wire is smaller than the wire diameter of the outer layer of tinned copper wire, the wire diameter of the inner layer of tinned copper wire is 0.05-0.12 mm, and the wire diameter of the outer layer of tinned copper wire is 0.08-0.18.
Preferably, the polyester fiber plain weave lapping layer is of a polyester fiber plain weave one-way spiral lapping and covering lapping structure, and the thickness of the polyester fiber plain weave lapping layer is 0.1mm to 0.5 mm.
Preferably, the AFRP woven layer is formed by weaving an inner aramid twisted yarn layer and an outer aramid twisted yarn layer in a mutually reverse spiral winding manner, and the thickness of the AFRP woven layer is 0.25mm to 0.5 mm.
Preferably, the thickness of the inner foamed polyvinyl chloride sheath is 0.3mm to 0.8mm, and the thickness of the outer polyvinyl chloride sheath is 0.3mm to 0.7 mm.
Preferably, the cable core lay length is 70mm to 120mm, and the cable core lay length is at least five times of the twisted pair core lay length.
The preparation method of the stretch-resistant 4-core communication cable comprises the following specific steps:
the method comprises the following steps: obtaining an inner conductor through a stranding process;
step two: coating a foamed polypropylene resin insulating layer and a polypropylene resin insulating layer on the inner conductor by an extrusion coating process to obtain a twisted pair wire core;
step three: twisting the two twisted wire cores through a twisting process to obtain a twisted wire core body;
step four: longitudinally wrapping at least 1.2 circles of copper-plastic composite tape wrapping layers outside the twisted pair core body through a winding process to obtain an insulated twisted pair core, wherein the copper-plastic composite tape is prepared from the outer layer of the copper foil tape and the inner layer of PTFE resin through a heat sealing process;
step five: the four insulated twisted-pair wire cores, the one para-type wholly aromatic copolyamide tensile fiber rope and the four polypropylene resin core rods are jointly twisted through a twisting process to obtain a cable core, wherein the wrapping terminal part of the copper-plastic composite tape wrapping layer is positioned on one side far away from the center of the cable core;
step six: sequentially forming a shielding mesh conductor layer, a polyester fiber plain weave lapping layer and an AFRP (atomic layer Per fiber) woven layer outside the cable core through a winding process;
step seven: and forming a foamed polyvinyl chloride inner sheath and a polyvinyl chloride outer sheath on the AFRP woven layer by an extrusion coating process to prepare the 4-core communication cable.
The beneficial effect of this application:
1. the para-type wholly aromatic copolyamide tensile fiber rope and the four polypropylene resin core rods are added in the cable core, so that the cable core can better bear lateral pressure in states of bending, extrusion and the like, the cable core is prevented from being easily extruded and deformed, the circular section of the cable under normal working conditions is kept, the tensile elastic modulus of the para-type wholly aromatic copolyamide tensile fiber rope is large, the tensile resistance of the cable core is favorably improved, the bending resistance of the cable is enhanced, the polypropylene resin core rods are favorable for reducing the local stress concentration of the insulating twisted pair wire core, the torque force is reduced, the flexibility is improved, the extrusion deformation is resisted, the occurrence of core breakage and wire breakage is favorably prevented, the electrical performance of the cable is ensured, and the durability is better.
2. The composite band is moulded to copper takes place to reveal easily around the package terminal part of covering and causes the signal transmission decay big, through will be close to the cable core structural design that the netted conductive layer of shielding set up around the package terminal part, can effectual reduction reveal, reduce the signal transmission decay, improve the signal transmission characteristic, the composite band is moulded to copper is formed for the longitudinal package of the composite band is moulded to copper around the covering, the composite band is moulded to copper includes copper foil tape skin and PET film inlayer, make this shielding layer be difficult for appearing the phenomenon of rupture, the outer and the netted conductive layer contact of shielding of copper foil tape form with the electric potential.
3. Through reasonable design cable core lay length is 70mm to 120mm, and cable core lay length is five times of twisted pair line core lay length at least, helps preventing that copper-plastic composite belt from wrinkling around the covering, ensures signal transmission characteristic, improves the stability of shielding effect.
The AFRP woven layer has high strength and modulus, is excellent in ageing resistance, improves the flexibility of the cable, reduces the torque force of the cable during bending, is not easy to break, improves the overall tensile strength of the cable, and enhances the adaptability of installation and operation under different working conditions.
5. The inner conductor is formed by twisting tin-plated copper monofilaments with the diameter of 0.02mm to 0.05mm and the para-type wholly aromatic copolyamide drawn fibers, and the para-type wholly aromatic copolyamide drawn fibers are high in tensile elastic modulus and beneficial to improvement of tensile strength of the inner conductor.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
Description of reference numerals:
1-insulating twisted-pair wire core, 2-para-type wholly aromatic copolyamide drawn fiber rope, 21-twisted-pair wire core, 211-inner conductor, 212-foamed polypropylene resin insulating layer, 213-polypropylene resin insulating layer, 22-copper plastic composite tape wrapping layer, 23-wrapping terminal part, 3-polypropylene resin core rod, 4-shielding mesh conductor layer, 5-polyester fiber plain weave cloth wrapping layer, 6-AFRP weaving layer, 7-foamed polyvinyl chloride inner sheath and 8-polyvinyl chloride outer sheath.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, the stretch-resistant 4-core communication cable according to the embodiment of the present application includes four insulated twisted-pair cable cores 1, which are twisted together with four polypropylene resin core rods 3 to form a cable core, and a para-type wholly aromatic copolyamide stretched fiber rope 2. Preferably, the lay length of the cable core is 70mm to 120 mm. The cable core lay length is greater than the pair-stranded wire core lay length, further, the cable core lay length is at least five times of the pair-stranded wire core lay length, for example, the insulation pair-stranded wire core 1 lay length is 14mm to 20 mm.
The cable core outside cladding has shielding netted conductor layer 4, polyester fiber plain weave in proper order around covering 5, AFRP weaving layer 6, foaming polyvinyl chloride inner sheath 7 and polyvinyl chloride oversheath 8. In one embodiment, the copper-plastic composite tape wrapping layer 22 is formed by longitudinally wrapping a copper-plastic composite tape, and the copper-plastic composite tape comprises an outer copper foil tape layer and an inner PET film layer. In one embodiment, the shielding mesh conductor layer 4 is formed by spirally winding an inner layer and an outer layer of tinned copper wires in the same direction, the winding distance and the spiral angle of the inner layer tinned copper wires and the outer layer tinned copper wires are the same, the spiral angle is 50-70 degrees, the wire diameter of the inner layer tinned copper wires is smaller than that of the outer layer tinned copper wires, the wire diameter of the inner layer tinned copper wires is 0.05-0.12 mm, and the wire diameter of the outer layer tinned copper wires is 0.08-0.18 mm. In one embodiment, the polyester fiber plain weave lapping layer 5 is a polyester fiber plain weave unidirectional spiral lapping and lapping structure, and the thickness of the polyester fiber plain weave lapping layer 5 is 0.1mm to 0.5 mm. In one embodiment, the AFRP woven layer 6 is formed by weaving inner and outer aramid twisted threads in a reverse spiral winding manner, and the thickness of the AFRP woven layer 6 is 0.25mm to 0.5 mm. Preferably, the thickness of the inner foamed polyvinyl chloride sheath 7 is 0.3mm to 0.8mm, and the thickness of the outer polyvinyl chloride sheath 8 is 0.3mm to 0.7 mm.
The insulated twisted-pair wire core 1 comprises two twisted-pair wire cores 21 twisted to form a twisted-pair wire core body, at least 1.2 circles of copper-plastic composite tape wrapping layer 22 are longitudinally wrapped outside the twisted-pair wire core body, and less than 1.2 circles of copper-plastic composite tape wrapping layer easily cause signal transmission leakage. The wrapping terminal part 23 of the copper-plastic composite tape wrapping layer 22 is arranged close to the shielding mesh-shaped conductor layer 4, so that compared with the arrangement close to the central part of the cable core, the leakage is favorably reduced, the signal transmission attenuation is reduced, and the signal transmission characteristic is further improved. The twisted pair wire core 21 comprises an inner conductor 211, and a foamed polypropylene resin insulating layer 212 and a polypropylene resin insulating layer 213 which are sequentially coated outside the inner conductor 211, specifically, the inner conductor 211 is formed by twisting three twisted bundle wires, the twisted bundle wires are formed by twisting a plurality of tin-plated copper monofilaments with the wire diameter of 0.02mm to 0.05mm and a plurality of para-type wholly aromatic copolyamide drawn fiber yarns, and the twisting distance of the twisted bundle wires is 15 times to 30 times of the outer diameter of the inner conductor 211. Preferably, the thickness ratio of the foamed polypropylene resin insulation layer 212 to the polypropylene resin insulation layer 213 is 1:1 to 1: 1.5.
The preparation method of the stretch-resistant 4-core communication cable comprises the following specific steps:
the method comprises the following steps: obtaining an inner conductor through a stranding process;
step two: coating a foamed polypropylene resin insulating layer and a polypropylene resin insulating layer on the inner conductor by an extrusion coating process to obtain a twisted pair wire core;
step three: twisting the two twisted wire cores through a twisting process to obtain a twisted wire core body;
step four: longitudinally wrapping at least 1.2 circles of copper-plastic composite tape wrapping layers outside the twisted pair core body through a winding process to obtain an insulated twisted pair core, wherein the copper-plastic composite tape is prepared from the outer layer of the copper foil tape and the inner layer of PTFE resin through a heat sealing process;
step five: the four insulated twisted-pair wire cores, the one para-type wholly aromatic copolyamide tensile fiber rope and the four polypropylene resin core rods are jointly twisted through a twisting process to obtain a cable core, wherein the wrapping terminal part of the copper-plastic composite tape wrapping layer is positioned on one side far away from the center of the cable core;
step six: sequentially forming a shielding mesh conductor layer, a polyester fiber plain weave lapping layer and an AFRP (atomic layer Per fiber) woven layer outside the cable core through a winding process;
step seven: and forming a foamed polyvinyl chloride inner sheath and a polyvinyl chloride outer sheath on the AFRP woven layer by an extrusion coating process to prepare the 4-core communication cable.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. Stretch-proofing 4 core communication cable, characterized by: the cable comprises four insulating twisted-pair wire cores (1), a twisted-pair cable core is formed by surrounding a twisted-pair wholly aromatic copolyamide tensile fiber rope (2) and twisting the same with four polypropylene resin core rods (3), the outer portion of the cable core is sequentially coated with a shielding mesh conductor layer (4), polyester fiber plain woven cloth wrapping layer (5), AFRP woven layer (6), foamed polyvinyl chloride inner sheath (7) and polyvinyl chloride outer sheath (8), the insulating twisted-pair wire cores (1) comprise two twisted-pair wire cores (21) which are twisted to form a twisted-pair wire core, at least 1.2 circles of copper-plastic composite tape wrapping layer (22) are longitudinally wrapped outside the twisted-pair wire core, the copper-plastic composite tape wrapping end portion (23) of the wrapping layer (22) is close to the shielding mesh conductor layer (4), the twisted-pair wire cores (21) comprise inner conductors (211) and foamed polypropylene resin insulating layers (212) and polypropylene resin insulating layers (213) which are sequentially coated outside the inner conductors (211), the cable core lay length is larger than the twisted pair core lay length.
2. The stretch resistant 4-core communications cable of claim 1, wherein: the inner conductor (211) is formed by twisting three bunched stranded wires, the bunched stranded wires are formed by twisting a plurality of tinned copper monofilaments with the wire diameter of 0.02mm to 0.05mm and a plurality of para-type wholly aromatic copolyamide drawn fibers, and the twisting pitch of the bunched stranded wires is 15 times to 30 times of the outer diameter of the inner conductor (211).
3. The stretch resistant 4-core communications cable of claim 1, wherein: the thickness ratio of the foamed polypropylene resin insulation layer (212) to the polypropylene resin insulation layer (213) is 1:1 to 1: 1.5.
4. The stretch resistant 4-core communications cable of claim 1, wherein: the copper-plastic composite tape wrapping layer (22) is formed by longitudinally wrapping a copper-plastic composite tape, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer.
5. The stretch resistant 4-core communications cable of claim 1, wherein: the shielding mesh-shaped conductor layer (4) is formed by spirally winding an inner layer of tinned copper wire and an outer layer of tinned copper wire in the same direction, the winding distance and the spiral angle of the inner layer of tinned copper wire and the outer layer of tinned copper wire are the same, the spiral angle is 50-70 degrees, the wire diameter of the inner layer of tinned copper wire is smaller than the wire diameter of the outer layer of tinned copper wire, the wire diameter of the inner layer of tinned copper wire is 0.05-0.12 mm, and the wire diameter of the outer layer of tinned copper wire is 0.08-0..
6. The stretch resistant 4-core communications cable of claim 1, wherein: the polyester fiber plain weave lapping layer (5) is of a polyester fiber plain weave one-way spiral lapping cover lapping structure, and the thickness of the polyester fiber plain weave lapping layer (5) is 0.1mm to 0.5 mm.
7. The stretch resistant 4-core communications cable of claim 1, wherein: the AFRP woven layer (6) is formed by weaving an inner aramid twisted wire layer and an outer aramid twisted wire layer in a mutually reverse spiral winding mode, and the thickness of the AFRP woven layer (6) is 0.25 mm-0.5 mm.
8. The stretch resistant 4-core communications cable of claim 1, wherein: the thickness of the inner foamed polyvinyl chloride sheath (7) is 0.3mm to 0.8mm, and the thickness of the outer polyvinyl chloride sheath (8) is 0.3mm to 0.7 mm.
9. The stretch resistant 4-core communications cable of claim 1, wherein: the cable core lay length is 70mm to 120mm, and the cable core lay length is at least five times of the pair stranded wire core lay length.
10. The preparation method of the stretch-proofing 4-core communication cable is characterized by comprising the following steps: the method comprises the following specific steps:
the method comprises the following steps: obtaining an inner conductor through a stranding process;
step two: coating a foamed polypropylene resin insulating layer and a polypropylene resin insulating layer on the inner conductor by an extrusion coating process to obtain a twisted pair wire core;
step three: twisting the two twisted wire cores through a twisting process to obtain a twisted wire core body;
step four: longitudinally wrapping at least 1.2 circles of copper-plastic composite tape wrapping layers outside the twisted pair core body through a winding process to obtain an insulated twisted pair core, wherein the copper-plastic composite tape is prepared from the outer layer of the copper foil tape and the inner layer of PTFE resin through a heat sealing process;
step five: the four insulated twisted-pair wire cores, the one para-type wholly aromatic copolyamide tensile fiber rope and the four polypropylene resin core rods are jointly twisted through a twisting process to obtain a cable core, wherein the wrapping terminal part of the copper-plastic composite tape wrapping layer is positioned on one side far away from the center of the cable core;
step six: sequentially forming a shielding mesh conductor layer, a polyester fiber plain weave lapping layer and an AFRP (atomic layer Per fiber) woven layer outside the cable core through a winding process;
step seven: and forming a foamed polyvinyl chloride inner sheath and a polyvinyl chloride outer sheath on the AFRP woven layer by an extrusion coating process to prepare the 4-core communication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224819.6A CN112820447A (en) | 2021-03-01 | 2021-03-01 | Tensile 4-core communication cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224819.6A CN112820447A (en) | 2021-03-01 | 2021-03-01 | Tensile 4-core communication cable and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112820447A true CN112820447A (en) | 2021-05-18 |
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| CN202110224819.6A Withdrawn CN112820447A (en) | 2021-03-01 | 2021-03-01 | Tensile 4-core communication cable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114300185A (en) * | 2022-02-14 | 2022-04-08 | 浙江物产中大线缆有限公司 | High elastic recovery type anti-signal crosstalk multi-core cable |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114300185A (en) * | 2022-02-14 | 2022-04-08 | 浙江物产中大线缆有限公司 | High elastic recovery type anti-signal crosstalk multi-core cable |
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Application publication date: 20210518 |