CN113689983B - Fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable - Google Patents

Fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable Download PDF

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Publication number
CN113689983B
CN113689983B CN202110982077.3A CN202110982077A CN113689983B CN 113689983 B CN113689983 B CN 113689983B CN 202110982077 A CN202110982077 A CN 202110982077A CN 113689983 B CN113689983 B CN 113689983B
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China
Prior art keywords
fluoroplastic
layer
parts
cable
wires
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CN202110982077.3A
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CN113689983A (en
Inventor
卢英斌
卢蛟
黄伟
叶银珠
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Anhui Zhongtong Cable Technology Co ltd
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Anhui Zhongtong Cable Technology Co ltd
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Publication of CN113689983A publication Critical patent/CN113689983A/en
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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
    • H01B7/29—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
    • B65H75/4405—Traversing devices; means for orderly arranging the material on the drum
    • 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
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
    • 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
    • H01B7/1895—Internal space filling-up means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)

Abstract

The invention discloses a fluoroplastic insulating and sheath shielding high-temperature-resistant computer cable, which comprises two groups of wires, wherein alkali-free glass fiber filling ropes are arranged on two sides of the two groups of wires, a cabling polyester tape wrapping layer is wrapped on the outer surfaces of the two groups of wires, a copper wire braiding shielding layer is wrapped on the outer surface of the cabling polyester tape wrapping layer, a fluoroplastic sheath is wrapped on the outer surface of the copper wire braiding shielding layer, the heat bearing capacity of the fluoroplastic sheath can be effectively improved by wrapping a layer of fire resistant layer on the outer surface of a copper conductor, alkali-free glass fiber filling ropes are filled when the two wires are twisted, gaps are prevented from occurring in the cable, the toughness of the cable is improved, the cable is not easy to deform, meanwhile, the copper wire braiding shielding layer can effectively prevent interference caused by external signals, and finally, the fluoroplastic sheath is wrapped on the outer side to protect the inner wire, so that the stability and the service life of the cable are further improved.

Description

Fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable
Technical Field
The invention relates to the technical field of computer cables, in particular to a fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable.
Background
The wire and cable industry is the second largest industry in China, which is second to the automobile industry, and the product variety satisfaction rate and the domestic market share are both over 90 percent. With the high-speed development of the wire and cable industry of various countries, the number of newly-increased enterprises is continuously increased, and the whole technical level of the industry is greatly improved. The computer cable is one of the cables, and the traditional computer cable is unstable in structure, easy to damage and incapable of being normally used at high temperature.
Most of the existing computer cables are single in structure, many are only protected by copper conductors in the cables through jackets, and the stability of use is kept, but under a high-temperature environment, the computer cables not only can influence the service life of the computer cables, but also can influence the stability of data transmission of the computer cables, and the situation that the cables are not orderly paved easily when the computer cables are wound and unwound occurs, so that the labor intensity of workers is high.
Disclosure of Invention
The invention aims to provide a fluoroplastic insulating and sheath shielding high-temperature-resistant computer cable, which can effectively improve the heat-bearing capacity of the cable by winding a layer of fire-resistant layer on the outer surface of a copper conductor, and finally, the fluoroplastic sheath is wrapped on the outer side to protect an internal wire, so that the stability and the service life of the cable in use are further improved, and the cable can be paved on a cable drum or the ground when being wound and unwound by utilizing guide wheels on a guide plate, so that the labor intensity of workers can be effectively reduced.
The aim of the invention can be achieved by the following technical scheme:
the fluoroplastic insulating and sheath shielding high-temperature-resistant computer cable comprises two groups of wires, alkali-free glass fiber filling ropes are arranged on two sides of the two groups of wires, a cabling polyester tape wrapping layer is wrapped on the outer surfaces of the two groups of wires, a copper wire woven shielding layer is wrapped on the outer surface of the cabling polyester tape wrapping layer, and a fluoroplastic sheath is wrapped on the outer surface of the copper wire woven shielding layer;
the wire comprises two copper conductors, wherein the outer surfaces of the two copper conductors are respectively coated with a fire-resistant layer, the outer surfaces of the fire-resistant layers are coated with fluoroplastic insulating layers, and the outer surfaces of the two fluoroplastic insulating layers are coated with twisted polyester tape wrapping layers.
As a further scheme of the invention: the preparation method of the computer cable comprises the following steps:
step one: preparing copper conductors by using a copper rod material and a die, winding a layer of fire resistant layer on the outer surfaces of the copper conductors, extruding a fluoroplastic insulating layer on the outer surfaces of the copper conductors in a cladding mode, and winding twisted polyester belts on the outer surfaces of the two copper conductors in a spiral mode by a wrapping machine so as to form the lead.
Step two: selecting two wires, placing alkali-free glass fiber filling ropes on two sides of the wires, then helically twisting the wires by a twisting machine, and winding a layer of cabling polyester tape on the surface of the wires by a wrapping machine.
Step three: and (3) sleeving a copper wire braided shielding layer on the outer surface of the cable-forming polyurethane belt, introducing the modified fluoroplastic into an extruder, extruding a fluoroplastic sheath on the outer surface of the copper wire braided shielding layer, and winding the fluoroplastic sheath by winding equipment after cooling.
As a further scheme of the invention: in the third step, the preparation method of the modified fluoroplastic comprises the following steps: 30-43 parts of polytetrafluoroethylene, 35-39 parts of poly (perfluoroalkoxy) resin, 12-16 parts of ceramic micropowder, 4-10 parts of aluminate, 1-2 parts of mica powder, 4-10 parts of silicon oxide, 5-8 parts of quartz sand, 3-6 parts of coupling agent, 4-8 parts of preservative, 2-5 parts of lubricant and 1-4 parts of light stabilizer are selected by weight, and are introduced into a reaction kettle for smelting and mixing, so that the modified fluoroplastic can be obtained.
As a further scheme of the invention: the preservative is prepared from phenolic epoxy powder, acrylic acid, N-methyl pyrrolidone, laurinol polyoxyethylene ether, phthalate and borax according to the weight ratio of 8:9:4:3:1: 1.
As a further scheme of the invention: the light stabilizer is any one compound of styrene-methacrylic acid, phosphite triester and phosphite triester.
As a further scheme of the invention: the lubricant is any one compound of polyethylene wax, polypropylene wax and oxidized polyethylene wax.
As a further scheme of the invention: the raw material of the coupling agent is one or a mixture of two raw materials of divinylbenzene and diisocyanate.
The invention has the beneficial effects that:
(1) According to the invention, the heat bearing capacity of the copper conductor can be effectively improved by winding the fire-resistant layer on the outer surface of the copper conductor, and the alkali-free glass fiber filling rope is filled when the two conductors are twisted, so that gaps are prevented from occurring in the cable, the toughness of the cable is improved, the cable is not easy to deform, meanwhile, the copper wire is braided into the shielding layer, the interference of external signals on the cable can be effectively prevented, and finally, the fluoroplastic sheath is wrapped on the outer side to protect the internal conductors, so that the stability and the service life of the cable in use are further improved.
(2) According to the invention, the supporting plate is arranged in the winding equipment, and the threaded rod is driven to rotate by the rotating motor, so that the moving block can move left and right, the cable is placed on the moving block, and the cable can be paved on the cable drum or the ground when being wound and unwound by utilizing the guide wheel on the guide plate, so that the labor intensity of workers can be effectively reduced.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of a computer cable of the present invention;
FIG. 2 is a schematic view of the external structure of the winding apparatus of the present invention;
FIG. 3 is a schematic view of the external structure of the moving block of the present invention;
fig. 4 is a schematic view of the external structure of the cable drum of the present invention.
In the figure: 1. a wire; 11. a copper conductor; 12. a refractory layer; 13. a fluoroplastic insulating layer; 2. alkali-free glass fiber filling ropes; 14. twisted polyester tape wrapping layer; 3. a cabled polyester tape wrapping layer; 4. copper wire braiding shielding layer; 5. a fluoroplastic sheath; 21. a support frame; 22. a cable drum; 23. a support plate; 24. a mounting frame; 25. a thread sleeve; 26. a rotating motor; 27. a threaded rod; 28. a moving block; 29. a threaded hole; 210. a sliding hole; 211. a support rod; 212. a guide plate; 213. a guide wheel; 214. rotating the gear; 215. a sliding shaft; 216. a gear ring; 217. and driving the motor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the invention discloses a fluoroplastic insulation and sheath shielding high temperature resistant computer cable, which comprises two groups of wires 1, wherein each wire 1 comprises two copper conductors 11, the outer surfaces of the two copper conductors 11 are respectively covered with a fire-resistant layer 12, the fire-resistant layer 12 plays a role in heat insulation, the outer surfaces of the fire-resistant layers 12 are covered with fluoroplastic insulation layers 13, the outer surfaces of the two fluoroplastic insulation layers 13 are covered with twisted polyester tape wrapping layers 14, two groups of wires 1 are provided with alkali-free glass fiber filling ropes 2, the outer surfaces of the two groups of wires 1 are covered with a cable-forming polyester tape wrapping layer 3, the outer surfaces of the cable-forming polyester tape wrapping layers 3 are covered with copper wire woven shielding layers 4, the copper wire woven shielding layers 4 are used for shielding interference of external signals, and the outer surfaces of the copper wire woven shielding layers 4 are covered with fluoroplastic sheaths 5.
The preparation method of the computer cable comprises the following steps:
step one: the wire 1 is formed by preparing copper conductors 11 from a copper rod material by using a mold, winding a refractory layer 12 on the outer surfaces of the copper conductors 11, extruding a fluoroplastic insulating layer 13 on the outer surfaces of the copper conductors 11 in a cladding manner, and winding twisted polyester tapes on the outer surfaces of the two copper conductors 11 in a spiral manner by a wrapping machine.
Step two: two wires 1 are selected, alkali-free glass fiber filling ropes 2 are placed on two sides of each wire 1, then the wires are helically stranded through a strander, and a layer of cabling polyester tape is wound on the surface of each wire through a wrapping machine.
Step three: and (3) sleeving a copper wire braided shielding layer 4 on the outer surface of the cable-forming polyurethane belt, introducing the modified fluoroplastic into an extruder, extruding a fluoroplastic sheath 5 on the outer surface of the copper wire braided shielding layer 4, and winding the fluoroplastic sheath by winding equipment after cooling.
In the first step, the refractory layer 12 is formed by wrapping a mica tape at an angle of 10-15 degrees.
The winding device comprises two supporting frames 21 and a cable drum 22, wherein a supporting plate 23 is fixedly connected between one sides of the supporting frames 21, a mounting frame 24 is fixedly connected to one side of the supporting plate 23, two supporting frames 24 are respectively provided with a threaded sleeve 25 in a penetrating mode, one side of the supporting plate 23, which is opposite to the supporting frame 24, is fixedly connected with a rotating motor 26, the output end of the rotating motor 26 is fixedly connected with a threaded rod 27, the outer surface of the threaded rod 27 is in threaded connection with the inner surface of the threaded rod 27, the outer surface of the threaded rod 27 is provided with a moving block 28, one side of the moving block 28 is provided with a threaded hole 29, the inner surface of the threaded hole 29 is in threaded connection with the outer surface of the threaded rod 27, one side of the moving block 28 is provided with a sliding hole 210, two sides of the supporting frames 21 are respectively provided with a supporting rod 211, the outer surface of the supporting rod 211 is in sliding connection with the inner surface of the sliding hole 210, one side of the moving block 28 is provided with three groups of guide plates 212, the guide plates 212 are composed of two mounting plates 215, one side of the mounting plates are fixedly connected with a gear wheel 215, one side of the two mounting plates is in sliding connection with the inner surface of the sliding hole 210, the two sides of the driving wheel 216 is in sliding connection with the left side of the driving wheel 216, and the driving wheel 216 is in sliding connection with the inner surface of the driving wheel 22, and the driving wheel is in sliding connection with the left side of the driving wheel 216, and the driving wheel is in the sliding connection with the inner surface of the driving wheel, and the driving wheel is in the opposite side, and the opposite to the driving wheel, and the driving wheel is.
The using method of the winding device comprises the following steps: firstly, one end of a cable passes through the guide plate 212 in a vertically staggered manner and contacts with the guide wheel 213 on the guide plate 212, and one end of the cable is fixed on the inner surface of the cable drum 22, then the rotating motor 26 and the driving motor 217 are started, the driving motor 217 rotates the outer surface of the sliding shaft 215 through the meshing relationship between the rotating gear 214 and the gear ring 216, so that the cable is wound, at the moment, the rotating motor 26 rotates, so that the threaded rod 27 is driven to rotate, the moving block 28 moves by utilizing the connection relationship between the threaded rod 27 and the threaded hole 29 in the moving block 28, so that the sliding hole 210 on the moving block 28 slides on the outer surface of the supporting rod 211, and then the guide plate 212 drives the guide wheel 213 to move to one side, so that the cable is uniformly wound on the outer surface of the cable drum 22.
In the third step, the preparation method of the modified fluoroplastic comprises the following steps: 30-43 parts of polytetrafluoroethylene, 35-39 parts of poly (perfluoroalkoxy) resin, 12-16 parts of ceramic micropowder, 4-10 parts of aluminate, 1-2 parts of mica powder, 4-10 parts of silicon oxide, 5-8 parts of quartz sand, 3-6 parts of coupling agent, 4-8 parts of preservative, 2-5 parts of lubricant and 1-4 parts of light stabilizer are selected by weight, and are introduced into a reaction kettle for smelting and mixing, so that the modified fluoroplastic can be obtained.
The preservative is prepared from phenolic epoxy powder, acrylic acid, N-methyl pyrrolidone, laurinol polyoxyethylene ether, phthalate and borax according to a weight ratio of 8:9:4:3:1: 1.
The light stabilizer is styrene-methacrylic acid 2, 6-tetramethyl piperidinyl any one compound of tri-2, 6-methyl-4-piperidinazoxy radical phosphite and tri-1, 2, 6-pentamethylpiperidyl phosphite.
The lubricant is any one compound of polyethylene wax, polypropylene wax and oxidized polyethylene wax.
The raw materials of the couplant are one or a mixture of two raw materials of divinylbenzene and diisocyanate.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims (2)

1. The fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable comprises two groups of wires (1), and is characterized in that alkali-free glass fiber filling ropes (2) are arranged on two sides of the two groups of wires (1), a cabling polyester tape wrapping layer (3) is wrapped on the outer surface of the two groups of wires (1), a copper wire woven shielding layer (4) is wrapped on the outer surface of the cabling polyester tape wrapping layer (3), and a fluoroplastic sheath (5) is wrapped on the outer surface of the copper wire woven shielding layer (4);
the wire (1) comprises two copper conductors (11), wherein the outer surfaces of the two copper conductors (11) are respectively coated with a fire-resistant layer (12), the outer surfaces of the fire-resistant layers (12) are coated with fluoroplastic insulating layers (13), and the outer surfaces of the two fluoroplastic insulating layers (13) are coated with twisted polyester tape wrapping layers (14);
the preparation method of the computer cable comprises the following steps:
step one: preparing copper conductors (11) by using copper rods and a die, winding a layer of fire resistant layer (12) on the outer surfaces of the copper conductors (11), extruding a fluoroplastic insulating layer (13) on the outer surfaces of the copper conductors (11) in a cladding mode, and winding twisted polyester tapes on the outer surfaces of the two copper conductors (11) in a spiral mode by a wrapping machine so as to form a wire (1);
step two: selecting two wires (1), placing alkali-free glass fiber filling ropes (2) on two sides of the wires (1), then helically twisting by a twisting machine, and winding a layer of cabling polyester tape on the surface of the wires by a wrapping machine;
step three: a copper wire braided shielding layer (4) is sleeved on the outer surface of the cable-forming polyurethane belt, and finally, the modified fluoroplastic is introduced into an extruding machine, a fluoroplastic sheath (5) is extruded on the outer surface of the copper wire braided shielding layer (4), and the cable-forming polyurethane belt is coiled through coiling equipment after being cooled;
in the third step, the preparation method of the modified fluoroplastic comprises the following steps: 30-43 parts of polytetrafluoroethylene, 35-39 parts of poly (perfluoroalkoxy) resin, 12-16 parts of ceramic micropowder, 4-10 parts of aluminate, 1-2 parts of mica powder, 4-10 parts of silicon oxide, 5-8 parts of quartz sand, 3-6 parts of coupling agent, 4-8 parts of preservative, 2-5 parts of lubricant and 1-4 parts of light stabilizer are selected by weight, and are introduced into a reaction kettle for smelting and mixing to obtain modified fluoroplastic;
the preservative is prepared from phenolic epoxy powder, acrylic acid, N-methyl pyrrolidone, laurinol polyoxyethylene ether, phthalate and borax according to the weight ratio of 8:9:4:3:1:1, the composition is as follows;
the light stabilizer is styrene-methacrylic acid (2, 6-tetramethyl piperidinyl) any one compound of tris (2, 6-methyl-4-piperidinonitroxide) phosphite and tris (1, 2, 6-pentamethylpiperidinyl) phosphite;
the lubricant is any one compound of polyethylene wax, polypropylene wax and oxidized polyethylene wax;
the raw material of the coupling agent is one or a mixture of two raw materials of divinylbenzene and diisocyanate.
2. The fluoroplastic insulated and jacketed shielded high temperature resistant computer cable of claim 1, wherein in step one the refractory layer (12) is formed as a mica tape wrapped at an angle of 10-15 °.
CN202110982077.3A 2021-08-25 2021-08-25 Fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable Active CN113689983B (en)

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CN202110982077.3A CN113689983B (en) 2021-08-25 2021-08-25 Fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable

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Application Number Priority Date Filing Date Title
CN202110982077.3A CN113689983B (en) 2021-08-25 2021-08-25 Fluoroplastic insulation and sheath shielding high-temperature-resistant computer cable

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CN113689983B true CN113689983B (en) 2023-06-06

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010114019A (en) * 2008-11-10 2010-05-20 Hitachi Cable Ltd Cable
CN101494098B (en) * 2008-12-15 2012-06-20 安徽滨江电缆股份有限公司 High temperature resistant compensating cable
CN202487216U (en) * 2012-01-10 2012-10-10 安徽胜华电缆集团有限公司 Reinforced computer flexible cable
CN203351233U (en) * 2013-04-11 2013-12-18 安徽海纳电缆集团有限公司 Environment-friendly type anti-interference instrument cable
CN211670027U (en) * 2020-03-17 2020-10-13 安徽怡和电缆有限公司 Fluoroplastic insulation high-temperature-resistant shielding computer cable

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