WO2018133423A1 - 绝缘芯线、cmp级高阻燃数据电缆及两者的制作工艺 - Google Patents

绝缘芯线、cmp级高阻燃数据电缆及两者的制作工艺 Download PDF

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Publication number
WO2018133423A1
WO2018133423A1 PCT/CN2017/100111 CN2017100111W WO2018133423A1 WO 2018133423 A1 WO2018133423 A1 WO 2018133423A1 CN 2017100111 W CN2017100111 W CN 2017100111W WO 2018133423 A1 WO2018133423 A1 WO 2018133423A1
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Prior art keywords
insulating layer
core wire
insulated core
conductor
cmp
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PCT/CN2017/100111
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English (en)
French (fr)
Inventor
吴士杰
王国权
谭言秦
张博
冯成
宋志斌
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江苏亨通线缆科技有限公司
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Publication of WO2018133423A1 publication Critical patent/WO2018133423A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • 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
    • 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
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • 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
    • H01B13/02—Stranding-up
    • 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
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers
    • 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
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/148—Selection of the insulating material therefor
    • 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
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • 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
    • H01B3/441—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 from alkenes
    • 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
    • H01B3/443—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 from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445—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 from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • 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
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0216—Two layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • 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
    • 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
    • H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation
    • H01B7/385—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation comprising a rip cord or wire
    • 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

Definitions

  • the invention relates to the technical field of wire and cable, in particular to an insulated core wire, a CMP grade high flame-retardant data cable and a manufacturing process thereof.
  • a cable is usually a cable-like cable that is twisted from several or several sets of wires (at least two in each set). Each set of wires is insulated from each other and often twisted around a center. The entire outer bread has a height. Insulating cover, the cable has the characteristics of internal and external insulation. Commonly used wire and cable are divided into the following categories: bare wires, insulated wires, heat-resistant wires, shielded wires, power cables, control cables, data cables, and RF cables. Among them, the data cable is mainly used for network wiring of residential areas, business buildings, and the like.
  • the data cable Since the data cable is the most used in the building's integrated wiring and is distributed directly in every corner of the building, it has the greatest combustion-supporting effect in the fire. According to the relevant introduction, a 40-story building is about 600,000 meters of ordinary data cable. If the coating material is converted into gasoline, it is equivalent to three thousand liters. Once these data cables are burned, even if there are no other combustion-supporting materials, it is more than enough to burn a building.
  • the flame-retardant data cable is made of polyethylene insulation and PVC sheath.
  • Different grades of PVC sheathing material can meet the requirements of GB/T 18380.12 "Single insulated wire and cable vertical flame propagation test” and GB/T 18380.35 "Vertically installed bundled wire and cable flame vertical propagation test class C" standard Tested, but could not meet the UL910 test for large-scale combustion of pressurized-grade ventilation ducts.
  • a first object of the present invention is to provide an insulated core wire to solve the technical problem of the temperature resistance grade of the insulated core wire and the low flame retardant grade existing in the prior art.
  • the insulated core wire provided by the present invention comprises a conductor, and the outer peripheral side of the conductor is sequentially coated with an inner insulating layer and an outer insulating layer along a radial direction thereof; the inner insulating layer is an HDPE insulating layer, and the outer insulating layer is a FEP insulating layer.
  • the conductor (1) is a single crystal copper conductor.
  • the outer diameter deviation of the insulated core wire is controlled within ⁇ 0.003 mm, and the concentricity is ⁇ 98%.
  • the insulated core wire provided by the present invention comprises a conductor, and the outer peripheral side of the conductor is coated with an HDPE (High Density Polyethylene) insulating layer and a FEP (Fluorinated ethylene propylene) insulating layer in sequence;
  • the insulating layer is disposed on the outer side of the HDPE insulating layer, and the FEP insulating layer has a maximum working environment temperature of up to 200 ° C and below, and has a high temperature resistance level; in addition, the FEP insulating layer is used as the outer insulating layer, since the FEP material has no It can ignite and prevent the spread of flame.
  • the insulated core wire effectively improves the temperature resistance grade and flame retardant characteristics of the cable (which can meet the UL910 CMP grade flame retardant requirements), and achieves the effect of extending the service life and safety level of the cable, and has high practicability. And promote value.
  • the tensile strength and elongation at break of the insulated core wire are better than the existing products, and the minimum tensile strength of the insulated core wire can reach 21 MPa (industry standard is 16.5 MPa), and the minimum elongation at break can reach 510. % (industry standard is 300%), which are superior to the requirements of industry standards.
  • the FEP dielectric loss factor is small, and the attenuation value of the data cable per 100m length is 1dB smaller; under the same receiving condition, the transmission distance of the product using the insulated core wire is 4.5% longer than the existing product.
  • a second object of the present invention is to provide a CMP-grade high-flame-retardant data cable to solve the technical problems of the data cable having a low temperature resistance level and a low flame-retardant rating.
  • the CMP grade high flame-retardant data cable provided by the present invention comprises a sheath layer and the above-mentioned insulated core wire, and the sheath layer is coated on the outer peripheral side of the insulated core wire.
  • the insulating core wires are arranged in plurality, and each of the insulated core wires is respectively paired and twisted, and the two pairs form a twisted pair, and the twisted pair is a plurality of groups.
  • the sheath layer is coated on the outer peripheral side of the plurality of sets of twisted pairs.
  • the twisted pairs are set to four groups.
  • a tear line is disposed in the sheath layer, and the tear line extends in the same direction as the conductor extends.
  • the tear line is a polyester tear line.
  • the sheath layer is a PVC sheath layer.
  • the CMP level high flame-retardant data cable provided by the present invention can produce the beneficial effects of the above-mentioned insulated core wire, and details are not described herein again.
  • a third object of the present invention is to provide a process for fabricating an insulated core wire, comprising the steps of: (A) drawing a metal for forming an insulated core wire, and annealing and softening the drawn metal to form a conductor;
  • the step of extruding the HDPE insulating layer on the outer peripheral side of the conductor (1) includes:
  • the HDPE insulating layer raw material is subjected to mastication and opening to form a HDPE insulating layer, and the HDPE insulating layer is added to an extruder, and the HDPE insulating layer is extruded on the outer peripheral side of the conductor (1) by an extruder. on.
  • the FEP insulating layer raw material is subjected to mastication and opening to form a FEP insulating layer, the FEP insulating layer is added to the extruder, and the FEP insulating layer is extruded on the outer surface of the HDPE insulating layer by an extruder. on.
  • the manufacturing process of the insulating core wire further includes the following steps:
  • the production process adopts the combination type (the combined structure of the HDPE insulating layer and the FEP insulating layer) to insulate the production process very strictly, and the insulation outer diameter deviation is controlled to ⁇ 0.003 mm by the extrusion die (see the specific embodiment).
  • the concentricity requirement is ⁇ 98%, which can meet the electrical transmission performance requirements of cable products.
  • using this kind of combined insulation structure on the basis of satisfying the electrical transmission performance of the product, the temperature resistance grade, flame retardant grade and mechanical physical strength of the insulation layer are greatly improved, thereby ensuring the high resistance of the product.
  • the burning characteristics extend its service life.
  • a fourth object of the present invention is to provide a CMP high flame-retardant data cable Art, including the following steps:
  • the insulated core wire is paired and twisted, the two pairs form a twisted pair, the twisted pair is a plurality of groups, and the plurality of sets of twisted pairs are arranged, and the cable core is evenly twisted;
  • the metal is single crystal copper.
  • the manufacturing process of the CMP level high flame-retardant data cable provided by the invention can produce the same beneficial effects as the above-mentioned insulated core wire manufacturing process, and details are not described herein again.
  • FIG. 1 is a schematic structural view of an insulated core wire according to Embodiment 1 of the present invention.
  • FIG. 2 is a flow chart showing a manufacturing process of an insulated core wire according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic structural diagram of a CMP-level high flame-retardant data cable according to Embodiment 2 of the present invention.
  • FIG. 4 is a flow chart of a process for fabricating a CMP-level high flame-retardant data cable according to Embodiment 2 of the present invention.
  • Icons 1-conductor; 2-inner insulating layer; 3-outer insulating layer; 4-sheath layer; 5-twisted wire; 6-tear line; 7-color marking line.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the first embodiment is an insulated core wire, as shown in FIG. 1, the insulated core wire includes a conductor 1, the outer peripheral side of the conductor 1 is sequentially coated with an inner insulating layer 2 and an outer insulating layer 3 along a radial direction thereof;
  • the inner insulating layer 2 is a HDPE insulating layer, and the outer insulating layer 3 is a FEP insulating layer.
  • the conductor 1, the insulating layer 2, and the outer insulating layer 3 are arranged concentrically.
  • HDPE is obtained by copolymerization of tetrafluoroethylene and hexafluoropropylene.
  • the conductor 1 is a single crystal copper conductor, and the single crystal copper is a high-purity oxygen-free copper, the whole copper rod is composed of only one crystal grain, and there is no "grain boundary" between the crystal grains ("grain boundary It will reflect and refract the transmitted signal, causing signal distortion and attenuation, and thus has extremely high signal transmission performance.
  • the conductor 1 is single or plural, that is, one or more conductors 1 are disposed in a single inner insulating layer 2.
  • the insulated core wire in this embodiment includes the conductor 1, and the outer peripheral side of the conductor 1 is sequentially coated with the HDPE insulating layer and the FEP insulating layer; since the FEP insulating layer is disposed outside the HDPE insulating layer, and the highest working ambient temperature of the FEP insulating layer Up to 200 ° C and below, with a high temperature resistance.
  • the use of the FEP insulating layer as the outer insulating layer because the FEP material has the characteristics of not igniting and preventing the flame from diffusing, thus ensuring that the insulated core wire can realize the safe and effective transmission of communication data, even in the event of a fire, After the flame is in contact with the FEP insulation layer, it is not self-igniting and has no dripping, which has a good flame retardant effect, so that the flame does not spread along the cable.
  • the insulated core wire effectively improves the temperature resistance grade and flame retardant characteristics of the cable (which can meet the UL910 CMP flame retardant requirements), and achieves the effect of extending the service life and safety level of the cable, and has a high Practicality and promotion value.
  • the tensile strength and elongation at break of the insulated core wire are better than the existing products, and the minimum tensile strength of the insulated core wire can reach 21 MPa (industry standard is 16.5 MPa), and the minimum elongation at break can reach 510. % (industry standard is 300%), which are superior to the requirements of industry standards.
  • the FEP dielectric loss factor is small, and the attenuation value of the data cable per 100m length is 1dB smaller; under the same receiving condition, the transmission distance of the product using the insulated core wire is 4.5% longer than the existing product.
  • the embodiment further provides a manufacturing process for fabricating the above-mentioned insulated core wire. Referring to FIG. 2, the following steps are included:
  • the insulating layer raw material needs to be disposed.
  • the insulating layer raw materials include HDPE and FEP.
  • the prepared HDPE insulating layer raw material is subjected to mixing, smelting, and adding to an extruder, and the insulating layer is extruded on the outer surface of the conductor 1 by an extruder; after that, similarly, the configuration is performed.
  • the raw material of the good FEP insulating layer is refined, opened and added to the extruder, and the insulating layer is extruded on the outer surface of the HDPE insulating layer by an extruder to complete the fabrication of the insulated core wire.
  • the metal is a single crystal copper in the form of a copper rod.
  • Single crystal copper is a kind of high-purity oxygen-free copper.
  • the whole copper rod consists of only one crystal grain, and there is no "grain boundary" between the crystal grains ("grain boundary" will reflect and refract the passing signal. , causing signal distortion and attenuation), thus having extremely high signal transmission performance.
  • the manufacturing process of the insulated core wire adopts the production process of the combination type (the combined structure of the HDPE insulating layer and the FEP insulating layer), and the outer diameter deviation of the insulated core wire is controlled by the extrusion die to be controlled to ⁇ 0.003 mm, and the concentricity requirement is required. ⁇ 98% to meet the electrical transmission performance requirements of data cable products.
  • the key parameters of the extrusion die used for fabricating the above-mentioned insulated core wire are: inner layer U7 free of core: 0.510 mm; die sleeve: 0.64 mm, high speed extrusion type insulation extrusion; outer core core 1.5/ 4.5mm; die sleeve: 7.5mm; using high compression ratio DDR is 120, drop balance ratio
  • the production process route of DRB is 1.2, which makes the HDPE and FEP combined insulation production line speed reach 500m/min, ensuring the high-quality requirements of the combined insulation outer diameter tolerance of ⁇ 0.003mm and concentricity ⁇ 98%.
  • Adopting this kind of combined insulation structure on the basis of satisfying the electrical transmission performance of the product, the temperature resistance grade, the flame retardant grade and the mechanical physical strength of the insulation layer are greatly improved, thereby ensuring the high flame retardant property of the product. And prolonged its service life.
  • the second embodiment is a CMP-level high-flame-retardant data cable. As shown in FIG. 3, the sheath layer 4 and the insulating core wire in the first embodiment are included, and the sheath layer 4 is coated on the outer peripheral side of the insulating core wire.
  • the CMP level high flame-retardant data cable in this embodiment can produce the beneficial effects of the insulated core wire in the first embodiment, and details are not described herein again.
  • the insulating core wires are disposed in plurality, and the insulated core wires are respectively paired and twisted, the two pairs form a twisted pair 5, and the twisted pair 5 is a plurality of groups; the sheath layer 4 is coated in a plurality of pairs of twisted pairs The outer peripheral side of the line 5.
  • the twisted pairs 5 are set to four groups, each of the twisted pairs 5 has an elliptical shape, and the four sets of twisted pairs 5 are sequentially arranged to form a sealed space, and four sets of twisted pairs 5 The center is symmetrically distributed, and the adjacent two pairs of twisted pairs 5 are attached.
  • the sheath layer 4 is provided with a tear line 6 extending in the same direction as the conductor 1 extending, and the tear line 6 is located on the twisted pair 5 and the sheath layer 4. between.
  • the addition of the tear line 6 in the data cable has the following advantages: first, the tensile performance of the data cable can be improved; and second, the heat radiated by the data cable during use is absorbed.
  • the tear line 6 in this embodiment may be selected from a polyester tear line.
  • polyester yarn has the characteristics of high toughness, strong tensile strength and high fireproof performance, which can ensure the data cable has good tensile strength and temperature resistance.
  • the sheath layer 4 is a polyvinyl chloride (PVC) sheath layer.
  • PVC polyvinyl chloride
  • the sheath layer of this material has a certain flame retardant effect, so that the flame can be slowed down or prevented from spreading along the cable to some extent.
  • This embodiment further provides a manufacturing process for fabricating the above CMP-level high flame-retardant data cable. Referring to FIG. 4, the method includes the following steps:
  • At least one tear line 6 is provided, and the sheath layer 4 is coated on the outer peripheral side of the core so that the tear line 6 is located between the core and the sheath layer 4.
  • the above-mentioned stranding is to twist a plurality of insulated wires of the same diameter or different diameters in a certain direction and regularity.
  • Cable-forming is the process of stranding a number of insulated core wires into a cable core according to certain rules.
  • the insulating layer raw material needs to be disposed.
  • the insulating layer raw materials include HDPE and FEP.
  • the prepared HDPE insulating layer raw material is subjected to mixing, smelting, and adding to an extruder, and the insulating layer is extruded on the outer surface of the conductor 1 by an extruder; after that, similarly, the configuration is performed.
  • the raw material of the good FEP insulating layer is refined, opened and added to the extruder, and the insulating layer is extruded on the outer surface of the HDPE insulating layer by an extruder to complete the fabrication of the insulated core wire.
  • the CMP grade high flame retardant data cable comprises four pairs of high purity oxygen free copper wire pairs, both of which are covered with a HDPE insulating layer and a FEP insulating layer.
  • the insulated core wires are respectively paired and twisted according to the color, and the two pairs form a twisted pair 5.
  • the four pairs of twisted pairs 5 are arranged in a sequence of color sequences (blue, orange, green, and brown), and are uniformly twisted into a core.
  • a layer of polyvinyl chloride sheath is coated on the outside of the core, and a polyester filament is added to the core as the tear line 6.
  • the inner insulating layer 2 of one of the insulated core wires is provided with a color indicating line 7 (color strip line) for distinguishing and recognizing, which facilitates the paired stranding of the insulated core wires.
  • the insulated core wire and the CMP grade high flame-retardant data cable provided by the invention include the conductor, and in the case that the insulated core wire can realize the safe and effective transmission of the communication data, even if the fire occurs, the flame cannot spontaneously ignite after being in contact with the FEP insulating layer. No dripping, good flame retardant effect, so that the flame will not spread along the cable.
  • the insulated core wire effectively improves the temperature resistance grade and flame retardant characteristics of the cable (which can meet the UL910 CMP flame retardant requirements), and achieves the effect of extending the service life and safety level of the cable, and has a high Practicality and promotion value.
  • the tensile strength and elongation at break of the insulated core wire are better than those of existing products. Under the same receiving conditions, the transmission distance of the product using the insulated core wire is 4.5% longer than the existing product.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Thermal Sciences (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

本发明提供了一种绝缘芯线、CMP级高阻燃数据电缆及两者的制作工艺，涉及电线电缆技术领域，该绝缘芯线包括导体，导体的外周侧沿其径向向外依次包覆有内绝缘层和外绝缘层；内绝缘层为HDPE绝缘层，外绝缘层为FEP绝缘层，解决了现有技术中存在的绝缘芯线耐温等级以及阻燃等级较低的技术问题，能够大大提高数据电缆的耐温等级和阻燃等级，该数据电缆具有较高的安全传输性能和防火性能的技术效果。

Description

绝缘芯线、CMP级高阻燃数据电缆及两者的制作工艺
相关申请的交叉引用
本申请要求于2017年01月20日提交中国专利局的申请号为2017100453132、名称为“绝缘芯线、高阻燃数据电缆及两者的制作工艺”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电线电缆技术领域，尤其是涉及一种绝缘芯线、CMP级高阻燃数据电缆及两者的制作工艺。
背景技术
电缆通常是由几根或几组导线(每组至少两根)绞合而成的类似绳索的电缆，每组导线之间相互绝缘，并常围绕着一根中心扭成，整个外面包有高度绝缘的覆盖层，电缆具有内通电、外绝缘的特征。常用的电线电缆分为以下几类：裸导线、绝缘电线、耐热电线、屏蔽电线、电力电缆、控制电缆、数据电缆和射频电缆等。其中，数据电缆主要应用于小区、商务大楼等的网络布线。
由于数据电缆是大楼综合布线中用量最多，并直接分布在大楼的每个角落，在火灾中，它的助燃作用最大。据相关介绍，一栋四十层的大楼约铺设六十万米普通数据电缆，其包覆材料如果换算成汽油，则相当于三千升。这些数据电缆一旦燃烧起来，就算没有其他助燃材料，焚毁一栋大厦也是绰绰有余。
目前在通信数据电缆行业内，阻燃数据缆均采用聚乙烯绝缘和聚氯乙烯护套。采用不同等级的聚氯乙烯护套料，分别能满足GB/T 18380.12《单根绝缘电线电缆火焰垂直蔓延试验》和GB/T 18380.35《垂直安装的成束电线电缆火焰垂直蔓延试验C类》标准测试，但不能满足增压级通风管道的大规模燃烧UL910测试。
现有数据电缆产品存在以下缺点：一方面，聚乙烯绝缘材料安全使 用的温度等级为75℃；另一方面，聚乙烯绝缘护材料在燃烧时有很多滴落物，会加速火势的蔓延。因此，开发具备CMP级高温度等级、高阻燃效果的数据电缆对于数据的安全有效传输以及防火安全具有十分重要的意义。
发明内容
本发明的第一目的在于提供一种绝缘芯线，以解决现有技术中存在的绝缘芯线耐温等级以及阻燃等级较低的技术问题。
本发明提供的绝缘芯线包括导体，导体的外周侧沿其径向向外依次包覆有内绝缘层和外绝缘层；内绝缘层为HDPE绝缘层，外绝缘层为FEP绝缘层。
进一步地，导体(1)为单晶铜导体。
进一步地，绝缘芯线的外径偏差控制在±0.003mm以内、同心度≥98％。
本发明提供的绝缘芯线包括导体，导体的外周侧依次包覆有HDPE(High Density Polyethylene，高密度聚乙烯)绝缘层和FEP(Fluorinated ethylene propylene，聚四氟乙烯共聚物)绝缘层；由于FEP绝缘层设置于HDPE绝缘层的外侧，且FEP绝缘层的最高工作环境温度可达200℃及以下，具有较高的耐温等级；加之，使用FEP绝缘层作为外绝缘层，由于FEP材料具有不引燃、可阻止火焰扩散的特点，因而，在保证该绝缘芯线能够实现通信数据安全有效传输的情况下，即使火灾发生时，火焰与FEP绝缘层接触后也无法自燃更无滴落物，起到较好的阻燃效果，从而使火焰不会沿电缆蔓延。综上，该绝缘芯线有效地提高了电缆的耐温等级和阻燃特性(可以满足UL910 CMP级阻燃要求)，达到了延长电缆的使用寿命和安全等级的效果，具有较高的实用性和推广价值。
另外，该绝缘芯线的抗拉强度和断裂伸长率均好于现有产品，该绝缘芯线的最小抗拉强度可达到21MPa(行业标准为16.5MPa)，最小断裂伸长率可达到510％(行业标准为300％)，均优于行业内标准的要求。
此外，FEP绝缘介质损耗系数小，每100m长度的数据电缆衰减值会小1dB；在同样的接收条件下，采用该绝缘芯线的产品传输距离比现有产品长4.5％。
本发明的第二目的在于提供一种CMP级高阻燃数据电缆，以解决现有技术中存在的数据电缆耐温等级以及阻燃等级较低的技术问题。
本发明提供的CMP级高阻燃数据电缆包括护套层和上述的绝缘芯线，护套层包覆在绝缘芯线的外周侧。
进一步的，绝缘芯线设置为多个，各绝缘芯线分别进行配对绞合，两两组成对绞线，对绞线为多组。
护套层包覆在多组对绞线的外周侧。
进一步的，对绞线设置为四组。
进一步的，护套层内设有撕裂线，撕裂线的延伸方向与导体的延伸方向相同。
进一步的，撕裂线为涤纶撕裂线。
进一步的，护套层为聚氯乙烯护套层。
本发明提供的CMP级高阻燃数据电缆能够产生上述绝缘芯线的有益效果，在此不再赘述。
本发明的第三目的在于提供一种绝缘芯线的制作工艺，包括以下步骤：(A)对制作绝缘芯线所用的金属进行拉丝，对拉丝后的金属进行退火软化，制成导体；
(B)将HDPE绝缘层挤包在导体的外周侧上；
(C)将FEP绝缘层挤包在HDPE绝缘层的外周侧上，制成绝缘芯线。
进一步地，将HDPE绝缘层挤包在导体(1)的外周侧上的步骤包括：
将配置好的HDPE绝缘层原料经过密炼、开炼形成HDPE绝缘层，并将HDPE绝缘层加入到一挤出机上，采用挤出机将该HDPE绝缘层挤包在导体(1)的外周侧上。
进一步地，将配置好的FEP绝缘层原料经过密炼、开炼形成FEP绝缘层，将FEP绝缘层加入到挤出机上，采用挤出机将该FEP绝缘层挤包在HDPE绝缘层的外表面上。
进一步地，在将所述FEP绝缘层挤包在所述HDPE绝缘层的外周侧上，制成绝缘芯线的步骤之后，绝缘芯线的制作工艺还包括以下步骤：
(D)对绝缘芯线进行冷却；
(E)对冷却后的绝缘芯线进行在线检测；
(F)对检测合格后的绝缘芯线装盘、包装。
本发明提供的制作上述绝缘芯线的制作工艺能够产生如下有益效果：
本制作工艺采用该种组合型(HDPE绝缘层与FEP绝缘层的组合结构)绝缘的生产工艺要求非常严格，通过挤出模具(见具体实施方式)来保证绝缘外径偏差控制在±0.003mm、同心度要求≥98％，能够满足电缆产品电气传输性能要求。同时，采用该种组合型绝缘结构，在满足产品电气传输性能的基础上，又很大程度的提升了绝缘层的耐温等级、阻燃等级和机械物理强度，从而保证了该产品的高阻燃特性、延长了其使用寿命。
本发明的第四目的在于提供一种CMP级高阻燃数据电缆的制作工 艺，包括以下步骤：
(A)对制作绝缘芯线所用的金属进行拉丝，对拉丝后的金属进行退火软化，制成导体；
(B)将HDPE绝缘层挤包在导体的外周侧上；
(C)将FEP绝缘层挤包在HDPE绝缘层的外周侧上，制成绝缘芯线；
(D)绝缘芯线进行配对绞合，两两组成对绞线，对绞线为多组，多组对绞线进行排列，均匀绞合成缆芯；
(E)设置至少一根撕裂线，并在缆芯的外周侧包覆护套层，使撕裂线位于缆芯与护套层之间。
进一步的，金属为单晶铜。
本发明提供的CMP级高阻燃数据电缆的制作工艺能够产生和上述绝缘芯线制作工艺相同的有益效果，在此不再赘述。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例一提供的绝缘芯线的结构示意图；
图2为本发明实施例一提供的绝缘芯线的制作工艺流程图；
图3为本发明实施例二提供的CMP级高阻燃数据电缆的结构示意图；
图4为本发明实施例二提供的CMP级高阻燃数据电缆的制作工艺流程图。
图标：1－导体；2－内绝缘层；3－外绝缘层；4－护套层；5－对绞线；6－撕裂线；7－颜色标示线。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例一
本实施例一是一种绝缘芯线，参照图1所示，该绝缘芯线包括导体1，导体1的外周侧沿其径向向外依次包覆有内绝缘层2和外绝缘层3；内绝缘层2为HDPE绝缘层，外绝缘层3为FEP绝缘层。且导体1、绝缘层2以及外绝缘层3同心设置。
其中，优选地，HDPE为四氟乙烯和六氟丙烯共聚而成的。
其中，导体1为单晶铜导体，单晶铜是一种高纯度无氧铜，其整根铜杆仅由一个晶粒组成，不存在晶粒之间产生的“晶界”(“晶界”会对通过的信号产生反射和折射，造成信号失真和衰减)，因而具有极高的信号传输性能。导体1为单根或多根，即单个内绝缘层2内设置一根或多根导体1。
本实施例中的绝缘芯线包括导体1，导体1的外周侧依次包覆有HDPE绝缘层和FEP绝缘层；由于FEP绝缘层设置于HDPE绝缘层的外侧，且FEP绝缘层的最高工作环境温度可达200℃及以下，具有较高的耐温等级。
加之，使用FEP绝缘层作为外绝缘层，由于FEP材料具有不引燃、可阻止火焰扩散的特点，因而，在保证该绝缘芯线能够实现通信数据安全有效传输的情况下，即使火灾发生时，火焰与FEP绝缘层接触后也无法自燃更无滴落物，起到较好的阻燃效果，从而使火焰不会沿电缆蔓延。综上所述，该绝缘芯线有效地提高了电缆的耐温等级和阻燃特性(可以满足UL910 CMP级阻燃要求)，达到了延长电缆的使用寿命和安全等级的效果，具有较高的实用性和推广价值。
另外，该绝缘芯线的抗拉强度和断裂伸长率均好于现有产品，该绝缘芯线的最小抗拉强度可达到21MPa(行业标准为16.5MPa)，最小断裂伸长率可达到510％(行业标准为300％)，均优于行业内标准的要求。
此外，FEP绝缘介质损耗系数小，每100m长度的数据电缆衰减值会小1dB；在同样的接收条件下，采用该绝缘芯线的产品传输距离比现有产品长4.5％。
本实施例还提供一种制作上述绝缘芯线的制作工艺，参照图2所示，包括以下步骤：
(A1)对制作绝缘芯线所用的金属进行拉丝，对拉丝后的金属进行退火软化，制成导体1；
(B1)将HDPE绝缘层挤包在导体1的外周侧上；
(C1)将FEP绝缘层挤包在所述HDPE绝缘层的外周侧上，制成绝缘芯线；
(D1)对绝缘芯线进行冷却；
(E1)对冷却后的绝缘芯线进行在线检测；
(F1)对检测合格后的绝缘芯线装盘、包装。
具体地，在进行步骤(A)后，需配置绝缘层原料。
其中，绝缘层原料包括HDPE和FEP。
首先，将配置好的HDPE绝缘层原料经过密炼、开炼、加入到挤出机上，采用挤出机将该绝缘层挤包在导体1的外表面上；在此之后，同样地，将配置好的FEP绝缘层原料经过密炼、开炼、加入到挤出机上，采用挤出机将该绝缘层挤包在HDPE绝缘层的外表面上，完成绝缘芯线的制作。
其中，在拉丝阶段，金属为呈铜杆状的单晶铜。单晶铜是一种高纯度无氧铜，其整根铜杆仅由一个晶粒组成，不存在晶粒之间产生的“晶界”(“晶界”会对通过的信号产生反射和折射，造成信号失真和衰减)，因而具有极高的信号传输性能。
本绝缘芯线的制作工艺采用该种组合型(HDPE绝缘层与FEP绝缘层的组合结构)绝缘的生产工艺，通过挤出模具来保证绝缘芯线外径偏差控制在±0.003mm、同心度要求≥98％，以满足数据电缆产品电气传输性能要求。
具体地，制作上述绝缘芯线所采用挤出模具的关键参数选择为：内层U7免对模芯：0.510mm；模套：0.64mm，高速挤压式绝缘挤出；外层模芯1.5/4.5mm；模套：7.5mm；采用高压缩比DDR为120、引落平衡比 DRB为1.2的生产工艺路线，使HDPE和FEP组合绝缘生产线速度达到500m/min，确保组合绝缘外径公差满足±0.003mm、同心度≥98％的高质量要求。采用该种组合型绝缘结构，在满足产品电气传输性能的基础上，又很大程度地提升了绝缘层的耐温等级、阻燃等级和机械物理强度，从而保证了该产品的高阻燃特性、延长了其使用寿命。
实施例二
本实施例二是一种CMP级高阻燃数据电缆，参照图3所示，包括护套层4和实施例一中的绝缘芯线，护套层4包覆在绝缘芯线的外周侧。
本实施例中的CMP级高阻燃数据电缆能够产生实施例一中绝缘芯线的有益效果，在此不再赘述。
本实施例中，绝缘芯线设置为多个，各绝缘芯线分别进行配对绞合，两两组成对绞线5，对绞线5为多组；护套层4包覆在多组对绞线5的外周侧。
其中，优选地，本实施例中，对绞线5设置为4组，每个对绞线5呈椭圆形状，4组对绞线5依次排列围成密闭的空间，且4组对绞线5呈中心对称分布，相邻的两组对绞线5贴合。
本实施例中，较佳地，护套层4内设有撕裂线6，撕裂线6的延伸方向与导体1的延伸方向相同，撕裂线6位于对绞线5与护套层4之间。
其中，在数据电缆中增加撕裂线6具有以下优点：一是，可提高数据电缆的抗拉性能；二是，吸收数据电缆在使用过程中散发出的热量。
本实施例中的撕裂线6可选用涤纶撕裂线。其中，涤纶丝具有韧度高、承拉能力强和防火性能高的特点，能够保证数据电缆具有较好的抗拉性、耐温性。
本实施例中，优选地，护套层4为聚氯乙烯(PVC)护套层。采用该种材质的护套层具有一定阻燃效果，从而能够在一定程度上减缓或避免火焰沿电缆蔓延。
本实施例还提供一种制作上述CMP级高阻燃数据电缆的制作工艺，参照图4所示，包括以下步骤：
(A2)对制作绝缘芯线所用的金属(呈铜杆状的单晶铜)进行拉丝，对拉丝后的金属进行退火软化，制成导体1；
(B2)将HDPE绝缘层挤包在导体1的外周侧上；
(C2)将FEP绝缘层挤包在HDPE绝缘层的外周侧上，制成绝缘芯线；
(D2)绝缘芯线进行配对绞合，两两组成对绞线5，多组对绞线5进行排列，均匀绞合成缆芯，在此形成缆芯期间同时设置撕裂线6；
(E2)设置至少一根撕裂线6，并在缆芯的外周侧包覆护套层4，使撕裂线6位于缆芯与护套层4之间。
其中，上述提到的绞合，就是将若干根相同直径或不同直径的绝缘导线，按照一定的方向和规则绞合在一起。成缆，是将若干根绝缘芯线按照一定的规则进行绞合为成缆线芯的过程。
具体地，在进行步骤(A)后，需配置绝缘层原料。
其中，绝缘层原料包括HDPE和FEP。
首先，将配置好的HDPE绝缘层原料经过密炼、开炼、加入到挤出机上，采用挤出机将该绝缘层挤包在导体1的外表面上；在此之后，同样地，将配置好的FEP绝缘层原料经过密炼、开炼、加入到挤出机上，采用挤出机将该绝缘层挤包在HDPE绝缘层的外表面上，完成绝缘芯线的制作。
该CMP级高阻燃数据电缆包括四对高纯度无氧铜导线对，此铜导体1均外包覆HDPE绝缘层和FEP绝缘层。绝缘芯线按照颜色分别进行配对绞合，两两组成对绞线5。四对对绞线5按照色序(蓝、橙、绿和棕)排列顺序，均匀绞合成为缆芯。一层聚氯乙烯护套层包覆于缆芯外侧，缆芯内添加一根涤纶丝作为撕裂线6。
其中，在一组对绞线5中，其中一个绝缘芯线的内绝缘层2上设置有便于区别、辨识的颜色标示线7(色条线)，便于绝缘芯线的配对绞合。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
工业实用性
本发明提供的绝缘芯线及CMP级高阻燃数据电缆包括导体在保证该绝缘芯线能够实现通信数据安全有效传输的情况下，即使火灾发生时，火焰与FEP绝缘层接触后也无法自燃更无滴落物，起到较好的阻燃效果，从而使火焰不会沿电缆蔓延。综上所述，该绝缘芯线有效地提高了电缆的耐温等级和阻燃特性(可以满足UL910 CMP级阻燃要求)，达到了延长电缆的使用寿命和安全等级的效果，具有较高的实用性和推广价值。另外，该绝缘芯线的抗拉强度和断裂伸长率均好于现有产品。在同样的接收条件下，采用该绝缘芯线的产品传输距离比现有产品长4.5％。

Claims (15)

  1. 一种绝缘芯线，其特征在于，包括：导体(1)，所述导体(1)的外周侧沿其径向向外依次包覆有内绝缘层(2)和外绝缘层(3)；
    所述内绝缘层(2)为HDPE绝缘层，所述外绝缘层(3)为FEP绝缘层。
  2. 根据权利要求1所述的绝缘芯线，其特征在于，所述导体(1)为单晶铜导体。
  3. 根据权利要求1或2所述的绝缘芯线，其特征在于，所述绝缘芯线的外径偏差控制在±0.003mm以内、同心度≥98％。
  4. 一种CMP级高阻燃数据电缆，其特征在于，包括护套层(4)和权利要求1－3任一所述的绝缘芯线，所述护套层(4)包覆在所述绝缘芯线的外周侧。
  5. 根据权利要求4所述的CMP级高阻燃数据电缆，其特征在于，所述绝缘芯线设置为多个，各所述绝缘芯线分别进行配对绞合，两两组成对绞线(5)，所述对绞线(5)为多组；
    所述护套层(4)包覆在多组所述对绞线(5)的外周侧。
  6. 根据权利要求5所述的CMP级高阻燃数据电缆，其特征在于，所述对绞线(5)设置为四组。
  7. 根据权利要求4－6任一所述的CMP级高阻燃数据电缆，其特征在于，所述护套层(4)内设有撕裂线(6)，所述撕裂线(6)的延伸方向与所述导体(1)的延伸方向相同。
  8. 根据权利要求7所述的CMP级高阻燃数据电缆，其特征在于，所述撕裂线(6)为涤纶撕裂线。
  9. 根据权利要求4－8任一所述的CMP级高阻燃数据电缆，其特征在于，所述护套层(4)为聚氯乙烯护套层。
  10. 一种如权利要求1－3任一所述的绝缘芯线的制作工艺，其特征在于，包括以下步骤：
    (A)对制作所述绝缘芯线所用的金属进行拉丝，对拉丝后的金属进行退火软化，制成所述导体(1)；
    (B)将所述HDPE绝缘层挤包在所述导体(1)的外周侧上；
    (C)将所述FEP绝缘层挤包在所述HDPE绝缘层的外周侧上，制成所述绝缘芯线。
  11. 如权利要求10所述的绝缘芯线的制作工艺，其特征在于，所述将所述HDPE绝缘层挤包在所述导体(1)的外周侧上的步骤包括：
    将配置好的HDPE绝缘层原料经过密炼、开炼形成HDPE绝缘层，并将HDPE绝缘层加入到一挤出机上，采用所述挤出机将该HDPE绝缘层挤包在导体(1)的外周侧上。
  12. 如权利要求10或11所述的绝缘芯线的制作工艺，其特征在于，将配置好的FEP绝缘层原料经过密炼、开炼形成FEP绝缘层，将FEP绝缘层加入到挤出机上，采用挤出机将该FEP绝缘层挤包在HDPE绝缘层的外表面上。
  13. 如权利要求10－12任一所述的绝缘芯线的制作工艺，其特征在于，在所述将所述FEP绝缘层挤包在所述HDPE绝缘层的外周侧上，制成所述绝缘芯线的步骤之后，所述绝缘芯线的制作工艺还包括以下步骤：
    (D)对绝缘芯线进行冷却；
    (E)对冷却后的绝缘芯线进行在线检测；
    (F)对检测合格后的绝缘芯线装盘、包装。
  14. 一种如权利要求4－9任一项所述的CMP级高阻燃数据电缆的制作工艺，其特征在于，包括权利要求10－13任一所述的绝缘芯线的制作工艺，还包括以下步骤：
    (A)所述绝缘芯线进行配对绞合，两两组成对绞线(5)，所述对绞线(5)为多组，多组所述对绞线(5)进行排列，均匀绞合成缆芯；
    (B)设置至少一根撕裂线(6)，并在所述缆芯的外周侧包覆所述护套层(4)，使所述撕裂线(6)位于所述缆芯与所述护套层(4)之间。
  15. 根据权利要求11－14任一所述的CMP级高阻燃数据电缆的制作工艺，其特征在于，所述金属为单晶铜导体。
PCT/CN2017/100111 2017-01-20 2017-09-01 绝缘芯线、cmp级高阻燃数据电缆及两者的制作工艺 WO2018133423A1 (zh)

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