CN110993159A - Waterproofing type intercity track traffic cable - Google Patents

Waterproofing type intercity track traffic cable Download PDF

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Publication number
CN110993159A
CN110993159A CN201911221118.6A CN201911221118A CN110993159A CN 110993159 A CN110993159 A CN 110993159A CN 201911221118 A CN201911221118 A CN 201911221118A CN 110993159 A CN110993159 A CN 110993159A
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CN
China
Prior art keywords
water
layer
blocking
cable
city rail
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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
Application number
CN201911221118.6A
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Chinese (zh)
Inventor
沈小平
周江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongding Interconnection Information Co Ltd
Jiangsu Tongding Optic Electronic Stock Co Ltd
Original Assignee
Tongding Interconnection Information Co Ltd
Jiangsu Tongding Optic Electronic Stock Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tongding Interconnection Information Co Ltd, Jiangsu Tongding Optic Electronic Stock Co Ltd filed Critical Tongding Interconnection Information Co Ltd
Priority to CN201911221118.6A priority Critical patent/CN110993159A/en
Publication of CN110993159A publication Critical patent/CN110993159A/en
Pending legal-status Critical Current

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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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • 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
    • H01B7/02—Disposition of insulation
    • 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
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • 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
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/226—Helicoidally wound metal wires or tapes
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)

Abstract

The invention provides a water-blocking type intercity rail transit cable which comprises a cable core, a third water-blocking layer, a halogen-free glass fiber tape wrapping layer, a metal shielding layer, an inner lining layer, a steel tape armor layer, a fourth water-blocking layer and an outer sheath, wherein the third water-blocking layer, the halogen-free glass fiber tape wrapping layer, the metal shielding layer, the inner lining layer, the steel tape armor layer, the fourth water-blocking layer and the outer; the cable core comprises at least one four-wire set, the four-wire set is composed of four conductors coated with a first water-resistant layer, insulators coated on the outer sides of the conductors coated with the first water-resistant layer and a second water-resistant layer coated on the outer sides of the insulators, the conductors coated with the first water-resistant layer are uniformly distributed and embedded in the insulators, and the conductors are arranged at intervals. The water-blocking type intercity rail transit cable conductor is directly embedded in a tightly compacted insulator, the structure is stable, the production is simple, the cable has excellent transverse water-blocking and longitudinal water-blocking functions, the cable has excellent temperature-resistant, flame-retardant, moisture-proof, pressure-resistant and animal tooth bite-preventing functions, and the requirements of intercity rail transit on the cable are completely met.

Description

Waterproofing type intercity track traffic cable
Technical Field
The invention belongs to the technical field of cables, and particularly relates to a water-blocking type intercity rail transit cable.
Background
Subways, light rails, trams and maglev trains are usually one of the largest infrastructures of cities, and are also the main arteries and city lifelines of urban passenger traffic. As a public transport means with larger capacity, the safety of the public transport means is directly related to the life safety of the majority of passengers.
Traditional intercity track traffic cable, because design defect, the cable is intake the back, rivers can constantly stretch in the cable core, cause cable insulation resistance to descend, the electric capacity exceeds standard, conductor oxidation, serious quality problems such as metal level corrosion, ordinary intercity track traffic cable water resistance and vapor permeability are poor, shielding effect is poor to mechanical strength is lower, if signal cable breaks down, then lead to the fact train temporary stop, then lead to the fact the system confusion heavily, the consequence can't imagine.
Based on the above reasons, a water-blocking traffic cable appears on the basis of a common traffic cable, namely, a water-blocking layer is added in a traffic cable structure, however, the water-blocking traffic cable in the prior art is relatively complex in structure, in order to enhance the water-blocking effect, a conductor, a wire group and a cable core are all coated with a multilayer structure, the required production processes are multiple, the process is complex, and the water-blocking traffic cable is not suitable for rapid development of intercity rail transit, so that the technical innovation of the intercity rail transit cable structure is urgent.
Disclosure of Invention
The invention aims to provide a waterproof type intercity rail transit cable which has excellent waterproof and waterproof performances, can reduce production processes and simplifies the production process.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a water-blocking type intercity rail transit cable comprises a cable core, wherein the cable core comprises at least one lead group, and the lead group comprises a plurality of conductors coated with a first water-blocking layer; the conductors are uniformly embedded in the insulator, and the conductors are arranged at intervals; a second waterproof layer is coated outside the insulator; and the outer side of the cable core is sequentially coated with a fourth water-resistant layer, a halogen-free glass fiber tape winding layer, a metal shielding layer, an inner liner, a steel tape armor layer, a fifth water-resistant layer and an outer sheath from inside to outside.
Further, when the cable core comprises more than two lead groups, a third waterproof layer is arranged in a gap between each lead group.
Furthermore, the third waterproof layer is formed by mixing epoxy rubber oil, fiber yarns, epoxy resin and asphalt materials.
Further, the insulator is a tightly compacted polyethylene insulator.
Furthermore, the first waterproof layer is formed by soaking and curing a base fabric made of real silk cotton cloth in a glue solution, removing the redundant glue solution, drying and cutting.
Further, the second, fourth and fifth waterproof layers are woven tapes woven by waterproof yarns composed of a base layer of polyester fabric and expanded particles bonded to the base layer.
Further, the conductor is a TR type soft round copper wire conforming to GB/T3953.
Further, the metal shielding layer is an aluminum sheath or a comprehensive sheath or a copper strip shield.
Further, the outer sheath is a high flame retardant outer sheath.
Further, the inner liner is a low-smoke halogen-free flame-retardant polyolefin inner liner.
Compared with the prior art, the invention has the following beneficial effects:
1. the cable conductor has set up first water-blocking layer outward, and the conductor directly inlays to be put in inseparable compaction's polyethylene is insulating, has set up the second water-blocking layer outward of insulating layer, and the cable meets water the back, because there is the protection of first water-blocking layer and second water-blocking layer, can effectively block rivers or moisture and flow into inside the heart yearn through the clearance between conductor and the insulating layer. In addition, the conductor is directly embedded in the tightly compacted polyethylene insulator, no gap exists between core wires, and the risk of water inflow of the cable is reduced;
2. the conductor is directly embedded in the tightly compacted insulator, so that the structure is stable, the production is simple, a stranding process is omitted, and the manufacturing cost is low;
3. the conductor is only coated with the first waterproof layer, the wire group is only coated with the second waterproof layer, the production process is less, the process is simple, and the performance of the waterproof cable is not affected;
4. a third water-blocking layer is arranged in the gaps among the center line groups of the cable core, so that water flow or moisture can be effectively blocked from flowing into the core wires through the gaps among the four line groups, the defects of insulation aging, insulation resistance reduction and the like are caused, and the construction process of the third water-blocking layer is simple;
5. the fourth water-resistant layer and the fifth water-resistant layer are arranged outside the cable core, so that water flow or moisture can be effectively prevented from entering the cable core. The fifth waterproof layer is arranged outside the armor layer, so that various defects that the outer sheath is cut by the edge of a steel belt in the bending process of the traditional cable are overcome, and the safety coefficient is high;
6. the cable core is externally provided with a fourth water-blocking layer, a halogen-free glass fiber tape winding layer, a metal shielding layer, an inner liner layer, a steel tape armor layer, a fifth water-blocking layer and an outer sheath, the cable has excellent transverse water-blocking and longitudinal water-blocking functions, and the cable has excellent temperature-resistant, flame-retardant, moisture-proof, pressure-resistant, animal tooth bite-resistant and other functions, so that the requirements of intercity rail transit on the cable are completely met.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
wherein:
1. a four-wire set; 2. A conductor;
3. a first water resistant layer; 4. An insulator;
5. a second water resistant layer; 6. A third water resistant layer;
7. a fourth water resistant layer; 8. A halogen-free glass fiber tape-wound cladding;
9. a metal shielding layer; 10. An inner liner layer;
11. a steel tape armor layer; 12. A fifth water resistant layer;
13. an outer sheath.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and 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 thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
In the description of the present invention, when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A water-blocking type intercity rail transit cable is shown in figure 1 and comprises a cable core, a fourth water-blocking layer 7, a halogen-free glass fiber tape winding layer 8, a metal shielding layer 9, an inner lining layer 10, a steel tape armor layer 11, a fifth water-blocking layer 12 and an outer sheath 13, wherein the fourth water-blocking layer 7, the halogen-free glass fiber tape winding layer, the metal shielding layer 9, the inner lining layer 10, the steel tape armor layer 11, the fifth water-; wherein the outer sheath 13 is a high flame retardant outer sheath; the cable core comprises at least one four-wire set 1, and when the cable core comprises more than two four-wire sets 1, a third water-blocking layer 6 is arranged in a gap between each four-wire set and the corresponding four-wire set;
the four-wire group 1 consists of four conductors 2 coated with a first waterproof layer 3, insulators 4 coated on the outer sides of the conductors 2 coated with the first waterproof layer 3 and second waterproof layers 5 coated on the outer sides of the insulators 4, the conductors 2 coated with the first waterproof layers 3 are uniformly embedded in the insulators 4, and the conductors 2 are arranged at intervals; the conductor 2 adopts a TR type soft round copper wire conforming to the GB/T3953 specification, and the insulator 4 is made of a tightly compacted polyethylene insulating material.
The first waterproof layer 3 is formed by soaking and curing a base fabric made of real silk cotton cloth in a glue solution, removing redundant glue solution, drying and cutting. Because the base cloth of the real silk cotton cloth is a high-temperature resistant material and is soaked in the glue solution, the water absorption is good, the expansion speed is high, the expansion height is large, the water resistance is good, the fire resistance of the cable is enhanced, and the service life of the cable is prolonged.
The second waterproof layer 5, the fourth waterproof layer 7 and the fifth waterproof layer 12 are woven tapes woven by waterproof yarns formed by a base layer of polyester fabric and expanded particles bonded on the base layer. It should be noted that the material of the expanded particles is cellulose, acrylamide and acrylic acid polymer, so that the prepared woven belt has good water resistance, tensile strength and flexibility.
The third water-resistant layer 6 is formed by mixing epoxy-based rubber oil, fiber yarns, epoxy resin and asphalt materials, can effectively provide very uniform protection for water migration, can replace the traditional water-resistant factice, avoids buffering of the factice, reduces the weight of the cable, and is convenient to construct and maintain.
The metal shielding layer 9 is one of an aluminum sheath layer, a comprehensive sheath layer or a copper strip shield, the aluminum sheath shielding layer is preferably selected, so that the cable has excellent shielding performance, and the cable is not interfered by other external factors in the using process, so that the stability of signal transmission is ensured, the transmitted signal is not distorted or deformed, and the safety and reliability of the cable are improved.
The inner liner layer 10 is made of low-smoke halogen-free flame-retardant polyolefin material, and can be made of thermoplastic low-smoke halogen-free flame-retardant polyolefin oxygen-insulating layer cable material with the model specification of FZD 1502 of new material ltd. The inner liner 10 in this embodiment has not only a high oxygen index but also excellent heat insulation and oxygen isolation, and has no emission of halogen acid gas during combustion, a very small amount of toxic corrosive gas release, a low concentration of generated smoke, and excellent flame retardancy and processability. The thickness of the lining layer is 1.0-1.5 mm.
When the cable is manufactured:
(1) the method comprises the steps of wrapping a copper conductor 2 prepared in advance with a first water-resistant layer 3 wrapped outside the copper conductor 2 by a wrapping process, wherein the covering rate is not less than 20%, then enabling four copper conductors 2 wrapped with the first water-resistant layer 3 to sequentially pass through a wire arranging plate and enter a die sleeve of a die core of an extruding machine to be extruded by an insulator 4, enabling polyethylene to be wrapped outside the conductors 2 in an insulating mode, separating the conductors 2, and ensuring mutual independence among the conductors 2 and avoiding mutual interference due to brand-new structural arrangement. It should be noted that before the wire pair enters the extrusion molding machine head, the conductor 2 must be controlled by a wire pressing plate to jump so as to avoid quality problems such as insulation eccentricity and conductor 2 scratch;
(2) and a second water-resistant layer 5 is coated outside the insulator 4 by adopting a weaving process. Stranding the cable core and filling the third water-resistant layer 6 by adopting a cabling stranding process and a filling process for the four wire groups 1 according to process requirements;
(3) a fourth water-resistant layer 7 is coated outside the stranded cable core by adopting a weaving process, a layer of halogen-free glass fiber tape wrapping layer 8 is lapped outside the fourth water-resistant layer 7 in an overlapping manner by adopting a wrapping process, and the overlapping rate is higher than or equal to 20%; and then, wrapping an aluminum sheath shielding layer outside the halogen-free glass fiber tape wrapping layer 8 by adopting an argon arc welding continuous welding process, wrapping a lining layer 10 outside the aluminum sheath shielding layer by adopting an extrusion molding process, wrapping two layers of galvanized steel strips outside the extruded lining layer 10 in a leftward spiral gap by adopting an armoring process to serve as a cable steel strip armoring layer 11, wherein the wrapping gap is not more than 45% of the bandwidth, wrapping a fifth water-resistant layer 12 outside the armoring layer by adopting a weaving process, and finally, extruding and wrapping an outer sheath 13 outside the fifth water-resistant layer 12 to finish the manufacturing method of the invention.
The water-blocking type intercity rail transit cable conductor is directly embedded in the tightly compacted insulator, the structure is stable, the production is simple, the cable has excellent transverse water-blocking and longitudinal water-blocking functions, and the cable has excellent temperature resistance, flame retardance, moisture resistance, pressure resistance, animal tooth bite resistance and other functions, thereby completely meeting the requirements of intercity rail transit on the cable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A water-blocking type inter-city rail transit cable is characterized by comprising a cable core, wherein the cable core comprises at least one lead group, and the lead group comprises a plurality of conductors coated with a first water-blocking layer; the conductors are uniformly embedded in the insulator, and the conductors are arranged at intervals; a second waterproof layer is coated outside the insulator; and the outer side of the cable core is sequentially coated with a fourth water-resistant layer, a halogen-free glass fiber tape winding layer, a metal shielding layer, an inner liner, a steel tape armor layer, a fifth water-resistant layer and an outer sheath from inside to outside.
2. The water-blocking type inter-city rail traffic cable according to claim 1, wherein when the cable core includes more than two wire groups, a third water-blocking layer is provided in a gap between the wire groups.
3. The water-blocking type inter-city rail transit cable according to claim 2, wherein the third water-blocking layer is formed by mixing epoxy-based rubber oil, fiber yarn, epoxy resin and asphalt material.
4. The water-blocking type inter-city rail traffic cable according to claim 1, wherein the insulator is a tightly-compacted polyethylene insulator.
5. The water-blocking type inter-city rail transit cable according to claim 1, wherein the first water-blocking layer is formed by using a base fabric of silk cotton cloth, soaking the base fabric with glue solution through a dip-coating curing process, removing the excess glue solution, drying and slitting.
6. The water blocking type inter-city rail transit cable of claim 1, wherein the second, fourth and fifth water blocking layers are woven tapes woven by water blocking yarns composed of a base layer of polyester fabric and expanded particles adhered to the base layer.
7. The water-blocking type inter-city rail traffic cable according to claim 1, wherein the conductor is a TR type soft round copper wire in accordance with GB/T3953.
8. The water blocking type inter-city rail traffic cable according to claim 1, wherein the metal shielding layer is an aluminum sheath or a composite sheath or a copper tape shield.
9. The water-blocking type inter-city rail traffic cable according to claim 1, wherein the outer sheath is a high flame-retardant outer sheath.
10. The water-blocking type inter-city rail transit cable according to claim 1, wherein the inner liner is a low smoke zero halogen flame retardant polyolefin inner liner.
CN201911221118.6A 2019-12-03 2019-12-03 Waterproofing type intercity track traffic cable Pending CN110993159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911221118.6A CN110993159A (en) 2019-12-03 2019-12-03 Waterproofing type intercity track traffic cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911221118.6A CN110993159A (en) 2019-12-03 2019-12-03 Waterproofing type intercity track traffic cable

Publications (1)

Publication Number Publication Date
CN110993159A true CN110993159A (en) 2020-04-10

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CN201911221118.6A Pending CN110993159A (en) 2019-12-03 2019-12-03 Waterproofing type intercity track traffic cable

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112164505A (en) * 2020-09-30 2021-01-01 钟杰 Cross-linked polyethylene insulation low-smoke halogen-free flame-retardant power cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112164505A (en) * 2020-09-30 2021-01-01 钟杰 Cross-linked polyethylene insulation low-smoke halogen-free flame-retardant power cable

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