EP2224458A2 - Câble électrique - Google Patents

Câble électrique Download PDF

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Publication number
EP2224458A2
EP2224458A2 EP09015454A EP09015454A EP2224458A2 EP 2224458 A2 EP2224458 A2 EP 2224458A2 EP 09015454 A EP09015454 A EP 09015454A EP 09015454 A EP09015454 A EP 09015454A EP 2224458 A2 EP2224458 A2 EP 2224458A2
Authority
EP
European Patent Office
Prior art keywords
conductor
electrical cable
polytetrafluoroethylene
cable according
ptfe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09015454A
Other languages
German (de)
English (en)
Other versions
EP2224458A3 (fr
Inventor
Wolfgang Dlugas
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.)
HEW Kabel GmbH and Co KG
Original Assignee
HEW Kabel GmbH and Co KG
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 HEW Kabel GmbH and Co KG filed Critical HEW Kabel GmbH and Co KG
Publication of EP2224458A2 publication Critical patent/EP2224458A2/fr
Publication of EP2224458A3 publication Critical patent/EP2224458A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to an electrical cable with a conductor enclosing insulation of polytetrafluoroethylene.
  • Cables of the generic type are well known, which applies both to such designs that serve the transmission of electrical energy, as well as those versions that are assigned as coaxial cable to the field of electrical data transmission. Described are power cables of the generic type, for example in the EP-PS 0489 752 as well as in the state of the art mentioned there, where it comes to provide flexible, resistant to aggressive media insulation for the inner conductor.
  • the conductor insulation here consists of a microporous polytetrafluoroethylene (PTFE).
  • the disadvantage here is that the PTFE insulation during the other steps in the operation, when laying or mounting so executed cable relative to the enclosed electrical conductor can perform a relative movement, which is very hindering, for example, in a packaging of such cables.
  • the PTFE insulation is bonded to the surface of the enclosed electrical conductor.
  • This purpose is served by a heat processable fluoropolymer, such as a tetrafluoroethylene / hexafluoropropylene copolymer (FEP) or also a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (TFA / PFA) or similar fluoropolymers.
  • FEP tetrafluoroethylene / hexafluoropropylene copolymer
  • TSA / PFA tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer
  • the invention is therefore based on the object, in such cables, energy or data cables, the insulation is preferably made of a compact polytetrafluoroethylene matrix to ensure high adhesion of this material on the conductor surface even under extreme external conditions.
  • the polytetrafluoroethylene insulation consists of two individual layers, of which the first layer located directly on the conductor consists of a modified by a thermoplastic polymer polytetrafluoroethylene. This prevents any slipping out of the metallic conductor from the surrounding envelope even at high tensile forces. This applies both to the further processing of this cable, as well as for transport or installation or confection where it matters, after settling the insulation over the metallic conductor along a defined conductor length, for example, plug or other terminal equipment.
  • the two individual layers of the insulation of the cable constructed according to the invention can advantageously consist of concentric shaped bodies which are both extruded together onto the conductor.
  • An advantageous variant of the invention consists in that the two individual layers are concentric tape windings.
  • the winding band of the individual layers has a plano-convex cross-sectional shape, which is determined by a curved upper and a substantially straight lower boundary line.
  • thermoplastic material also for the mixture component.
  • This can e.g. be thermoplastically deformable fluoropolymers, such as on the basis of polyvinylidene fluoride and polytrifluorochloroethylene, or of thermoplastic copolymers of vinylidene fluoride and trifluorochloroethylene.
  • fluoropolymers based on copolymers of tetrafluoroethylene with ethylene, hexafluoropropylene and perfluoro (alkylvinyl) ethers having perfluoroalkyl radicals of 1 to 10 carbon atoms, in particular with perfluoro (propylvinyl) ether.
  • alkylvinyl alkylvinyl
  • perfluoro (alkylvinyl) ethers having perfluoroalkyl radicals of 1 to 10 carbon atoms, in particular with perfluoro (propylvinyl) ether.
  • PTFE mixture components suitable for the invention may be a polysulfone, a polyetherimide or a polyethersulfone, but also a polyetherketone (PEK).
  • PEK polyetherketone
  • a polyetheretherketone (PEEK) can find an advantageous application when it is added as a mixing component to the PTFE in an amount of, for example, 10 to 15% by weight.
  • a particularly advantageous embodiment of the invention results when the polytetrafluoroethylene mixture component as a polyphenylene sulfide (PPS) in an amount of 10-15 wt.% Is added.
  • PPS polyphenylene sulfide
  • This material is characterized mainly by a high mechanical strength and dimensional stability in the heat, by a low moisture absorption and by a high resistance to attack by chemicals.
  • the PPS is particularly suitable, together with the predominant PTFE component, to ensure a permanently wear-resistant insulation of an electrical conductor.
  • the envelope of the conductor of an electrical cable is constructed in two layers. It is essential for the invention that the two layers are non-positively and positively connected with each other, so form a compact unit.
  • the invention provides a method for Production of an envelope in which first of all a PTFE powder and a lubricant or lubricant by so-called paste extrusion, a cylindrical molded body is produced with a central bore.
  • the polytetrafluoroethylene of the two layers is sintered in continuation of the invention after the extrusion of the two moldings on the conductor at the same time, wherein the melting or melting by the temperature increase during the sintering process thermoplastic polymer forms adhesive bridges to the outer peripheral surface of the conductor.
  • thermoplastic polymer forms adhesive bridges to the outer peripheral surface of the conductor.
  • the wall thickness of the second layer of polytetrafluoroethylene modified by admixture of a thermoplastic polymer will be about 10-60% of the wall thickness of the entire PTFE coating of the electrical conductor. This also applies to the proposed variant of the invention, in which the individual layers of the insulation consist of concentric tape windings.
  • the preparation of a cable according to the invention proceeds in such a way that the conductor is first wrapped with one or more layers of a non-sintered strip produced from a polymer mixture of PTFE powder and a thermoplastic polymer and lubricants or lubricant by paste extrusion followed by belt forming ,
  • a winding tape made of polytetrafluoroethylene by paste extrusion and subsequent tape forming is expressly to the own older application DE 102 01 833 A1 Referenced.
  • the proportion of conductive fillers in polytetrafluoroethylene, which is present in powder form as starting material 1.5 to 30 wt.%, Preferably 2 to 20 wt.%, Amount.
  • Suitable conductive fillers for this purpose are, for example, carbon blacks, graphite, metal oxides or the like.
  • the cable 1 shown in the figure consists of the electrical conductor 2 of a plurality of stranded or twisted individual wires. Depending on the application, this can be nickel-plated or silver-plated copper wires.
  • the electrical conductor 2 is coated with an inner PTFE sheath 3 and an outer PTFE sheath 4, wherein the PTFE of the sheath 3 is modified by admixing a thermoplastic, highly heat-resistant polymer to PTFE powder prior to paste extrusion.
  • both sheaths 3 and 4 are permanently positive and non-positively connected to the electrical conductor 2.
  • the outer surface of the electric cable 1 according to the invention is self-contained and smooth.
  • the stranded copper wires of the conductor 2 are heat-resistant and protected against external aggressive media securely fixed by the mechanically strong envelope made of PTFE.
  • the cable 1 is suitable for a temperature range of -190 ° C to + 260 ° C continuous operating temperature and therefore also be used where increased or very low temperatures must be expected.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Laminated Bodies (AREA)
EP09015454.3A 2009-01-25 2009-12-15 Câble électrique Withdrawn EP2224458A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910006069 DE102009006069A1 (de) 2009-01-25 2009-01-25 Elektrisches Kabel

Publications (2)

Publication Number Publication Date
EP2224458A2 true EP2224458A2 (fr) 2010-09-01
EP2224458A3 EP2224458A3 (fr) 2013-09-25

Family

ID=42282590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015454.3A Withdrawn EP2224458A3 (fr) 2009-01-25 2009-12-15 Câble électrique

Country Status (2)

Country Link
EP (1) EP2224458A3 (fr)
DE (1) DE102009006069A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105336453A (zh) * 2015-11-24 2016-02-17 江苏永鼎盛达电缆有限公司 双层共挤绝缘辐照交联工艺方法以及低烟无卤阻燃电线
AT525296A1 (de) * 2021-07-23 2023-02-15 Miba Emobility Gmbh Verfahren zur Herstellung eines isolierten elektrischen Leiters
CN115954637A (zh) * 2022-12-14 2023-04-11 江苏云舟通信科技有限公司 一种耐腐蚀柔性同轴电缆及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103811125B (zh) * 2014-02-18 2016-03-30 四川兴川泰线缆有限公司 耐高温抗老化高柔韧性电力电缆
PT3226258T (pt) * 2016-04-01 2019-01-09 Gebauer & Griller Metallwerk Gmbh Condutor elétrico isolado

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489752A1 (fr) 1989-08-29 1992-06-17 Gore & Ass Cable electrique.
DE4414052A1 (de) 1994-04-22 1995-10-26 Eilentropp Kg Elektrisches Kabel mit mikroporöser Polytetrafluorethylen-Isolierung
DE10201833A1 (de) 2002-01-18 2003-07-31 Hew Kabel Cdt Gmbh & Co Kg Verfahren zur Herstellung eines Wickelbandes aus ungesintertem Polytetrafluorethylen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489752A1 (fr) 1989-08-29 1992-06-17 Gore & Ass Cable electrique.
DE4414052A1 (de) 1994-04-22 1995-10-26 Eilentropp Kg Elektrisches Kabel mit mikroporöser Polytetrafluorethylen-Isolierung
DE10201833A1 (de) 2002-01-18 2003-07-31 Hew Kabel Cdt Gmbh & Co Kg Verfahren zur Herstellung eines Wickelbandes aus ungesintertem Polytetrafluorethylen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105336453A (zh) * 2015-11-24 2016-02-17 江苏永鼎盛达电缆有限公司 双层共挤绝缘辐照交联工艺方法以及低烟无卤阻燃电线
AT525296A1 (de) * 2021-07-23 2023-02-15 Miba Emobility Gmbh Verfahren zur Herstellung eines isolierten elektrischen Leiters
CN115954637A (zh) * 2022-12-14 2023-04-11 江苏云舟通信科技有限公司 一种耐腐蚀柔性同轴电缆及其制备方法
CN115954637B (zh) * 2022-12-14 2023-10-20 江苏云舟通信科技有限公司 一种耐腐蚀柔性同轴电缆及其制备方法

Also Published As

Publication number Publication date
EP2224458A3 (fr) 2013-09-25
DE102009006069A1 (de) 2010-07-29

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