CN114446517A - Coaxial communication cable with high electromagnetic shielding efficiency and preparation method thereof - Google Patents
Coaxial communication cable with high electromagnetic shielding efficiency and preparation method thereof Download PDFInfo
- Publication number
- CN114446517A CN114446517A CN202210041680.6A CN202210041680A CN114446517A CN 114446517 A CN114446517 A CN 114446517A CN 202210041680 A CN202210041680 A CN 202210041680A CN 114446517 A CN114446517 A CN 114446517A
- Authority
- CN
- China
- Prior art keywords
- layer
- communication cable
- electromagnetic shielding
- coaxial communication
- insulating layer
- 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
Links
Images
Classifications
-
- 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
- H01B7/02—Disposition of insulation
-
- 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
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
-
- 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
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1808—Construction of the conductors
-
- 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
- H01B13/016—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing co-axial cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
-
- 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
-
- 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
-
- 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
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
Abstract
The invention discloses a coaxial communication cable with high electromagnetic shielding efficiency and a preparation method thereof, wherein the coaxial communication cable comprises an inner conductor, an insulating layer, an outer conductor layer and an outer protective sleeve which are sequentially arranged from inside to outside; the insulating layer is wrapped on the inner conductor; the outer conductor layer is wrapped on the insulating layer; the outer protective sleeve is wrapped on the outer conductor layer; the outer conductor layer is an electric shielding-magnetic shielding-electric shielding multi-layer composite structure consisting of a metal composite belt, a high-permeability metal belt and a braided layer. The coaxial communication cable with high electromagnetic shielding efficiency provided by the invention has excellent electromagnetic shielding efficiency and is suitable for being used in a complex interference environment; the cable also has the excellent performances of high mechanical strength, difficult damage during installation and laying, small signal attenuation, long transmission distance, good insulating property and the like.
Description
Technical Field
The invention relates to the technical field of communication cables, in particular to a coaxial communication cable with high electromagnetic shielding efficiency and a preparation method thereof.
Background
The coaxial radio frequency cable is used as an effective transmission mode of high-frequency signals, electromagnetic energy is limited in a medium between an inner conductor and an outer conductor to be transmitted, and therefore the coaxial radio frequency cable has the remarkable advantages of being small in attenuation, high in shielding performance, wide in using frequency band, stable in performance and the like. However, with the development of communication equipment technology, the shielding effectiveness indexes such as signal attenuation, shielding attenuation, noise value and the like of coaxial communication cables connected between equipment are higher and higher, and particularly in the nuclear power field, high temperature, radiation and harsh working conditions exist, and the environment is more severe. Therefore, higher requirements are put on the performance of the cable, but the current cable cannot meet the requirements of service life and electromagnetic interference resistance under the harsh environment.
Disclosure of Invention
The invention aims to provide a coaxial communication cable with high electromagnetic shielding efficiency and a preparation method thereof aiming at the problems of short service life and poor anti-electromagnetic interference capability of the conventional cable under severe conditions so as to solve the problems of service life and electromagnetic interference of the cable under severe environments.
The invention is realized by the following technical scheme:
a coaxial communication cable with high electromagnetic shielding efficiency is characterized by comprising an inner conductor, an insulating layer, an outer conductor layer and an outer protective sleeve which are sequentially arranged from inside to outside; the insulating layer is wrapped on the inner conductor; the outer conductor layer is wrapped on the insulating layer; the outer protective sleeve is wrapped on the outer conductor layer; the outer conductor layer is an electric shielding-magnetic shielding-electric shielding multi-layer composite structure consisting of a metal composite belt, a high-permeability metal belt and a braided layer.
Specifically, in the coaxial communication cable with high electromagnetic shielding effectiveness, the outer conductor layer adopts an electric shielding-magnetic shielding-electric shielding multi-layer composite structure composed of a metal composite belt, a high magnetic conductive metal belt and a braided layer, and the outer conductor layer is also used as a shielding layer while being used as a conductor. The coaxial communication cable with high electromagnetic shielding efficiency provided by the invention has the following advantages: (1) the coaxial communication cable with high electromagnetic shielding efficiency designed by the invention has excellent electromagnetic shielding efficiency and is suitable for being used in a complex interference environment. (2) The coaxial communication cable with high electromagnetic shielding efficiency has high mechanical strength and is not easy to damage when being installed and laid. (3) The coaxial communication cable with high electromagnetic shielding efficiency has the advantages of reduced signal attenuation and long transmission distance. (4) The coaxial communication cable with high electromagnetic shielding efficiency has good insulating property and is suitable for simultaneously transmitting high-frequency signals and high-voltage power supplies.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the inner conductor is a tinned or silvered copper conductor with a solid core or twisted or tubular structure. Specifically, the inner conductor in the cable is of a solid core structure or a conductor structure formed by twisting a plurality of guide wires or a tubular structure, and is made of a tinned or silvered copper conductor.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the insulating layer is made of cross-linked polyethylene irradiated by an electron accelerator. Preferably, the cable insulation material adopted by the invention is a radiation cross-linked polyethylene material, so that the temperature resistance grade of the cable can be improved, and the service life of the cable can be prolonged.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the outer protective sleeve is made of a cross-linked halogen-free low-smoke flame-retardant polyolefin material irradiated by an electron accelerator. The temperature resistance grade of the cable is improved, and the service life is prolonged.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the outer conductor layer is sequentially provided with a metal composite belt, a first high-permeability metal belt, a first woven layer, a second high-permeability metal belt and a second woven layer from inside to outside; the metal composite strip is adhered to the insulating layer through a semi-conductive adhesive. Specifically, the plastic layer surface of the metal composite belt is coated with a semi-conductive adhesive which can be bonded with the insulating layer at normal temperature. Preferably, the metal composite belt is tightly adhered to the insulating layer by adopting the semi-conductive adhesive, so that the relative sliding friction can be reduced, and the noise is low.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the metal composite belt is an aluminum-plastic composite belt or a copper-plastic composite belt.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the first high-permeability metal strip and the second high-permeability metal strip are iron-nickel alloy strips; the thickness of the first high magnetic conductive metal strip and the second high magnetic conductive metal strip is 0.05-0.1 mm.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the nickel content in the iron-nickel alloy strip is 78-81 wt%.
Further, the coaxial communication cable with high electromagnetic shielding effectiveness: the first woven layer and the second woven layer are tinned copper wire or silvered copper wire woven layers, and the weaving density of the woven layers is not less than 90%.
A method for preparing a coaxial communication cable with high electromagnetic shielding effectiveness is characterized by comprising the following steps:
s1, extruding an insulating material on the outer side of the inner conductor, and irradiating by using an electron accelerator to form the insulating layer;
s2, wrapping the metal composite tape outside the insulating layer, and bonding the metal composite tape and the insulating layer through the semi-conductive adhesive;
s3, a horizontal wrapping machine and a horizontal braiding machine are connected in series to form a first high-permeability metal strip and a first braided layer, and the first high-permeability metal strip is wrapped in a gap manner; continuously adopting a horizontal lapping machine and a horizontal braiding machine to carry out serial production to form a second high-permeability metal strip and a second braided layer, wherein the center line of the second high-permeability metal strip is above the gap of the first high-permeability metal strip;
s4, extruding and wrapping the material for forming the outer protective sleeve outside the second woven layer, then vacuumizing and compacting, and irradiating by using an electron accelerator to obtain the outer protective sleeve, so as to obtain the coaxial communication cable with high electromagnetic shielding efficiency.
Specifically, the preparation method of the coaxial communication cable with high electromagnetic shielding effectiveness comprises the following specific steps:
s1, extruding and coating an insulating material (crosslinked polyethylene) on the outer side of the inner conductor by adopting an extruding machine in an extruding mode, and then irradiating by using an electron accelerator to form the insulating layer;
s2, wrapping the metal composite tape outside the insulating layer by using a wrapping machine, coating semi-conductive glue on the metal composite tape, and enabling the metal composite tape to be inwards tightly connected with the insulating layer, wherein the covering rate is 15-25%;
s3, a horizontal wrapping machine and a horizontal braiding machine are connected in series to form a first high-permeability metal strip and a first braided layer, and the first high-permeability metal strip is wrapped in a gap manner; continuously adopting a horizontal lapping machine and a horizontal braiding machine to carry out serial production to form a second high-permeability metal strip and a second braided layer, wherein the center line of the second high-permeability metal strip is above the gap of the first high-permeability metal strip;
s4, extruding and wrapping materials for forming the outer protective sleeve outside the second woven layer in an extruding mode through an extruding machine, then arranging a vacuumizing device at the machine head of the extruding machine, and vacuumizing to enable the outer protective sleeve to be tightly wrapped on the second woven layer (namely an outer conductor layer); and then irradiating by an electron accelerator to obtain the outer protective sleeve, thus obtaining the coaxial communication cable with high electromagnetic shielding efficiency.
The invention has the beneficial effects that:
(1) the coaxial communication cable with high electromagnetic shielding efficiency provided by the invention has excellent electromagnetic shielding efficiency and is suitable for being used in a complex interference environment; the cable also has the excellent performances of high mechanical strength, difficult damage during installation and laying, small signal attenuation, long transmission distance, good insulating property and the like.
(2) The coaxial communication cable with high electromagnetic shielding efficiency adopts irradiation cross-linked polyethylene, has high insulation resistance and strong pressure resistance, and can simultaneously transmit high-frequency signals and a high-voltage power supply.
(3) The coaxial communication cable with high electromagnetic shielding efficiency provided by the invention adopts an electric shielding-magnetic shielding-electric shielding combined shielding type structure, and an interference signal is reflected by eddy current loss and different shielding interfaces in a shielding layer, so that the cable is more suitable for complex electric field and magnetic field interference environments.
(4) The coaxial communication cable with high electromagnetic shielding efficiency also adopts the semi-conductive adhesive to bond the metal composite belt and the insulating layer, so that the metal composite belt and the insulating layer are tightly bonded, the relative sliding friction can be reduced, and the noise is low.
(5) According to the preparation process of the coaxial communication cable with the high electromagnetic shielding efficiency, the first and second high magnetic conductive metal strips and the first and second woven layers are produced in one process, so that the production time is greatly shortened, the gap stability of the high magnetic conductive metal strips is ensured, and the shielding performance of the cable is uniform and consistent in the whole length.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a coaxial communication cable with high electromagnetic shielding performance according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a coaxial communication cable with high electromagnetic shielding performance according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a coaxial communication cable with high electromagnetic shielding performance according to embodiment 3 of the present invention.
The labels in the figure are: 1 inner conductor, 2 insulating layers, 3 outer conductor layers, 3-1 metal composite strips, 3-2 first high-permeability metal strips, 3-3 first woven layers, 3-4 second high-permeability metal strips, 3-5 second woven layers and 4 outer protective sleeves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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 invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Example 1
As shown in fig. 1, a coaxial communication cable with high electromagnetic shielding effectiveness includes a solid-core structure tin-plated copper conductor 1 (inner conductor 1), an insulating layer 2, an outer conductor layer 3 and an outer protective sheath 4, which are sequentially arranged from inside to outside; the insulating layer 2 is wrapped on the inner conductor 1; the outer conductor layer 3 is wrapped on the insulating layer 2; the outer protective sleeve 4 is wrapped on the outer conductor layer 3; the outer conductor layer 3 is an electric shielding-magnetic shielding-electric shielding multi-layer composite structure consisting of a metal composite belt, a high-permeability metal belt and a braid; specifically, the outer conductor layer 3 sequentially comprises a metal composite strip 3-1, a first high-permeability metal strip 3-2, a first woven layer 3-3, a second high-permeability metal strip 3-4 and a second woven layer 3-5 from inside to outside; the metal composite strip 3-1 is adhered to the insulating layer 2 by a semiconductive adhesive.
Specifically, the metal composite tape 3-1 of the above example 1 is an aluminum-plastic composite tape; the first high magnetic permeability metal strip 3-2 is an iron-nickel alloy strip, the content of soft nickel in the iron-nickel alloy strip is 79 wt%, and the thickness of the first high magnetic permeability metal strip 3-2 is 0.05 mm; the second high magnetic permeability metal strip 3-4 is also an iron-nickel alloy strip, the content of soft nickel is 81 wt%, and the thickness of the second high magnetic permeability metal strip 3-4 is 0.08 mm; the first braided layer 3-3 and the second braided layer 3-5 are both tinned copper wire braided layers, and the braiding density is not less than 90%. Preferably, the insulating layer 2 is made of radiation cross-linked polyethylene material; the material of the outer protective sleeve 4 is irradiation cross-linking halogen-free low-smoke flame-retardant polyolefin material.
The preparation method of the coaxial communication cable with high electromagnetic shielding effectiveness in the embodiment 1 includes the following specific steps:
s1, extruding and coating an insulating material (crosslinked polyethylene) on the outer side of the inner conductor 1 by adopting an extruding machine in an extruding mode, and irradiating by using an electron accelerator to form the insulating layer 2;
s2, wrapping a metal composite tape 3-1 (aluminum-plastic composite tape) on the outer side of the insulating layer 2 by using a wrapping machine, and then coating a semi-conductive adhesive on the aluminum-plastic composite tape 3-1 to be tightly connected with the insulating layer 2 inwards;
s3, a horizontal wrapping machine and a horizontal braiding machine are connected in series to produce the aluminum-plastic composite belt, a first high-permeability metal belt (iron-nickel alloy belt) 3-2 and a first braided layer (tinned copper wire braided layer) 3-3 are sequentially wrapped outside the aluminum-plastic composite belt 3-1, and the first high-permeability metal belt 3-2 is wrapped in a clearance manner; then, a horizontal lapping machine and a horizontal braiding machine are continuously connected in series for production, a first braided layer 3-3 is sequentially wrapped to form a second high-permeability metal belt (iron-nickel alloy belt) 3-4 and a second braided layer (tinned copper wire braided layer) 3-5, and the central line of the second high-permeability metal belt 3-4 is positioned above the gap of the first high-permeability metal belt 3-2;
s4, extruding the material of the outer protective sleeve 4 on the outer side of the second woven layer 3-5 in a tube extruding mode through an extruding machine, then arranging a vacuumizing device at the head of the extruding machine, and vacuumizing to enable the outer protective sleeve 4 to be tightly coated on the second woven layer 3-5; then the coaxial communication cable with high electromagnetic shielding effectiveness is obtained after the irradiation of the electron accelerator, and the structure of the prepared coaxial communication cable with high electromagnetic shielding effectiveness is shown in figure 1.
Example 2
As shown in fig. 2, a coaxial communication cable with high electromagnetic shielding effectiveness comprises an inner conductor 1 (the inner conductor 1 is formed by twisting 7 silver-plated copper wires), an insulating layer 2, an outer conductor layer 3 and an outer protective sleeve 4, which are sequentially arranged from inside to outside; the insulating layer 2 is wrapped on the inner conductor 1; the outer conductor layer 3 is wrapped on the insulating layer 2; the outer protective sleeve 4 is wrapped on the outer conductor layer 3; the outer conductor layer 3 is an electric shielding-magnetic shielding-electric shielding multi-layer composite structure consisting of a metal composite belt, a high-permeability metal belt and a braided layer; specifically, the outer conductor layer 3 sequentially comprises a metal composite strip 3-1, a first high-permeability metal strip 3-2, a first woven layer 3-3, a second high-permeability metal strip 3-4 and a second woven layer 3-5 from inside to outside; the metal composite strip 3-1 is adhered to the insulating layer 2 by a semiconductive adhesive.
Specifically, the metal composite tape 3-1 in the above example 2 is a copper-plastic composite tape; the first high-permeability metal strip 3-2 and the second high-permeability metal strip 3-4 are both iron-nickel alloy strips, the soft nickel content in the first high-permeability metal strip 3-2 is 78 wt%, the soft nickel content in the second high-permeability metal strip 3-4 is 80 wt%, and the thicknesses of the first high-permeability metal strip 3-2 and the second high-permeability metal strip 3-4 are 0.08mm and 0.1mm respectively; the first braided layer 3-3 and the second braided layer 3-5 are both silver-plated copper wire braided layers, and the braiding density is not less than 90%. Preferably, the insulating layer 2 in the embodiment 2 is made of irradiation cross-linked polyethylene, and the outer protective sleeve 4 is made of irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin.
Example 2 a coaxial communication cable with high electromagnetic shielding effectiveness was prepared according to the same procedure as in example 1.
Example 3
As shown in fig. 3, a coaxial communication cable with high electromagnetic shielding effectiveness includes an inner conductor 1 (the inner conductor 1 is a tinned copper conductor with a tubular structure), an insulating layer 2, an outer conductor layer 3 and an outer protective sleeve 4, which are sequentially arranged from inside to outside; the insulating layer 2 is wrapped on the inner conductor 1; the outer conductor layer 3 is wrapped on the insulating layer 2; the outer protective sleeve 4 is wrapped on the outer conductor layer 3; the outer conductor layer 3 is an electric shielding-magnetic shielding-electric shielding multi-layer composite structure consisting of a metal composite belt, a high-permeability metal belt and a braided layer; specifically, the outer conductor layer 3 sequentially comprises a metal composite strip 3-1, a first high magnetic permeability metal strip 3-2, a first woven layer 3-3, a second high magnetic permeability metal strip 3-4 and a second woven layer 3-5 from inside to outside; the metal composite strip 3-1 is adhered to the insulating layer 2 by a semiconductive adhesive.
Specifically, the metal composite tape 3-1 in the embodiment 3 is a copper-plastic composite tape; the first high-permeability metal strip 3-2 and the second high-permeability metal strip 3-4 are both iron-nickel alloy strips, the soft-state nickel content in the first high-permeability metal strip 3-2 and the second high-permeability metal strip 3-4 is 80 wt%, and the thicknesses of the first high-permeability metal strip 3-2 and the second high-permeability metal strip 3-4 are both 0.05 mm; the first braided layer 3-3 and the second braided layer 3-5 are both silver-plated copper wire braided layers, and the braiding density is not less than 90%. In the embodiment 3, the insulating layer 2 is made of irradiation cross-linked polyethylene, and the outer protective sleeve 4 is made of irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin.
Example 3 a coaxial communication cable with high electromagnetic shielding effectiveness was prepared according to the same procedure as in example 1.
The above-mentioned preferred embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention. Obvious variations or modifications of the present invention are within the scope of the present invention.
Claims (10)
1. A coaxial communication cable with high electromagnetic shielding efficiency is characterized by comprising an inner conductor (1), an insulating layer (2), an outer conductor layer (3) and an outer protective sleeve (4) which are sequentially arranged from inside to outside; the insulating layer (2) is wrapped on the inner conductor (1); the outer conductor layer (3) is wrapped on the insulating layer (2); the outer protective sleeve (4) is wrapped on the outer conductor layer (3); the outer conductor layer (3) is an electric shielding-magnetic shielding-electric shielding multi-layer composite structure consisting of a metal composite belt, a high-permeability metal belt and a braided layer.
2. A coaxial communication cable with high electromagnetic shielding effectiveness according to claim 1, wherein the inner conductor (1) is a tin-plated or silver-plated copper conductor of solid core or stranded or tubular structure.
3. The coaxial communication cable with high electromagnetic shielding effectiveness according to claim 1, wherein the insulating layer (2) is made of cross-linked polyethylene irradiated by an electron accelerator.
4. The coaxial communication cable with high electromagnetic shielding effectiveness according to claim 1, wherein the outer protective sheath (4) is made of a cross-linked halogen-free low-smoke flame-retardant polyolefin material irradiated by an electron accelerator.
5. The coaxial communication cable with high electromagnetic shielding effectiveness according to claim 1, wherein the outer conductor layer (3) comprises, from inside to outside, a metal composite tape (3-1), a first highly magnetic conductive metal tape (3-2), a first woven layer (3-3), a second highly magnetic conductive metal tape (3-4), and a second woven layer (3-5); the metal composite strip (3-1) is adhered to the insulating layer (2) through a semi-conductive adhesive.
6. The coaxial communication cable with high electromagnetic shielding effectiveness according to claim 5, wherein the metal composite tape (3-1) is an aluminum-plastic composite tape or a copper-plastic composite tape.
7. A high EMI coaxial communication cable according to claim 5 characterized in that said first strip (3-2) and said second strip (3-4) are made of Fe-Ni alloy; the thicknesses of the first high magnetic conductive metal strip (3-2) and the second high magnetic conductive metal strip (3-4) are 0.05-0.1 mm.
8. The coaxial communication cable with high electromagnetic shielding effectiveness according to claim 7, wherein the content of nickel in the iron-nickel alloy ribbon is 78-81 wt%.
9. A coaxial communication cable with high electromagnetic shielding effectiveness according to claim 5, wherein said first braided layer (3-3) and said second braided layer (3-5) are tinned copper wire or silvered copper wire braided layers, and the braiding density of said braided layers is not less than 90%.
10. The method as claimed in claim 5, wherein the method comprises the following steps:
s1, extruding an insulating material on the outer side of the inner conductor (1), and then irradiating by using an electron accelerator to form the insulating layer (2);
s2, wrapping the metal composite tape (3-1) on the outer side of the insulating layer (2), and bonding the metal composite tape and the insulating layer through the semi-conductive adhesive;
s3, a horizontal wrapping machine and a horizontal braiding machine are connected in series to produce the magnetic steel wire mesh, the first high-permeability metal strip (3-2) and the first braided layer (3-3) are formed, and the first high-permeability metal strip (3-2) is wrapped in a gap manner; continuously adopting a horizontal lapping machine and a horizontal braiding machine to carry out serial production, forming a second high-permeability metal strip (3-4) and a second braiding layer (3-5), wherein the central line of the second high-permeability metal strip (3-4) is above the gap of the first high-permeability metal strip (3-2);
s4, extruding and wrapping the material for forming the outer protective sleeve (4) on the outer side of the second woven layer (3-5), then vacuumizing and compacting, and irradiating by using an electron accelerator to obtain the outer protective sleeve (4), so that the coaxial communication cable with high electromagnetic shielding efficiency is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210041680.6A CN114446517A (en) | 2022-01-14 | 2022-01-14 | Coaxial communication cable with high electromagnetic shielding efficiency and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210041680.6A CN114446517A (en) | 2022-01-14 | 2022-01-14 | Coaxial communication cable with high electromagnetic shielding efficiency and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114446517A true CN114446517A (en) | 2022-05-06 |
Family
ID=81368041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210041680.6A Pending CN114446517A (en) | 2022-01-14 | 2022-01-14 | Coaxial communication cable with high electromagnetic shielding efficiency and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114446517A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007059150A (en) * | 2005-08-23 | 2007-03-08 | Auto Network Gijutsu Kenkyusho:Kk | Shield cable and composite strand for shielding |
| CN101783208A (en) * | 2010-03-20 | 2010-07-21 | 深圳市穗榕同轴电缆科技有限公司 | Television coaxial cable concealed in wall |
| US20190304633A1 (en) * | 2018-03-29 | 2019-10-03 | Hitachi Metals, Ltd. | Shielded cable |
| CN214588104U (en) * | 2021-05-06 | 2021-11-02 | 安徽光神航天电子技术有限公司 | Nuclear magnetic pulse resistant CAN cable |
-
2022
- 2022-01-14 CN CN202210041680.6A patent/CN114446517A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007059150A (en) * | 2005-08-23 | 2007-03-08 | Auto Network Gijutsu Kenkyusho:Kk | Shield cable and composite strand for shielding |
| CN101783208A (en) * | 2010-03-20 | 2010-07-21 | 深圳市穗榕同轴电缆科技有限公司 | Television coaxial cable concealed in wall |
| US20190304633A1 (en) * | 2018-03-29 | 2019-10-03 | Hitachi Metals, Ltd. | Shielded cable |
| CN214588104U (en) * | 2021-05-06 | 2021-11-02 | 安徽光神航天电子技术有限公司 | Nuclear magnetic pulse resistant CAN cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114446517A (en) | Coaxial communication cable with high electromagnetic shielding efficiency and preparation method thereof | |
| WO2021128522A1 (en) | Shielding film for cable and method for connecting cable and connector | |
| CN210896757U (en) | High-low temperature resistant vibration-resistant low-noise symmetrical cable | |
| CN210110385U (en) | Network control composite cable for irradiation-resistant video monitoring | |
| CN216697950U (en) | Soft anti-nuclear magnetic pulse control cable | |
| CN219321091U (en) | Anti-interference video coaxial cable | |
| CN212161318U (en) | Electrical connection anti-interference multi-core cable of photovoltaic power generation system | |
| CN214476641U (en) | Bending-resistant multi-core communication cable | |
| CN216084425U (en) | Radio frequency test cable | |
| CN218274064U (en) | Impedance low-attenuation weak radio frequency cable | |
| CN219958614U (en) | Multilayer composite shielding cable | |
| CN215577903U (en) | Special anti-interference communication cable for aerospace | |
| CN217405130U (en) | High-temperature-resistant and soft flame-retardant communication cable | |
| CN216212478U (en) | Electromagnetic compatibility network data transmission cable and assembly | |
| CN220106105U (en) | Coaxial cable for low standing-wave ratio radar | |
| CN217444155U (en) | Composite shielding high-temperature-resistant coaxial cable for nuclear power station instrument | |
| CN220691763U (en) | Attenuation-inhibiting reinforced sealed shielding coaxial cable | |
| CN220456100U (en) | Bending-resistant industrial sensor cable | |
| CN218826262U (en) | Encoder industrial control composite bus | |
| CN210245144U (en) | Full-frequency anti-interference control cable for computer | |
| CN215184477U (en) | Low-loss temperature phase-stable coaxial radio frequency cable | |
| CN217239097U (en) | Bending-resistant anti-breaking coaxial cable | |
| CN219997945U (en) | Electromagnetic pulse resistant comprehensive watertight cable | |
| CN210516250U (en) | Multifunctional signal transmission line | |
| CN209168762U (en) | High interference immunity composite construction drag chain cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |