EP2816567B1 - Herstellungsverfahren eines elektrisch leitenden länglichen elements - Google Patents

Herstellungsverfahren eines elektrisch leitenden länglichen elements Download PDF

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Publication number
EP2816567B1
EP2816567B1 EP14168409.2A EP14168409A EP2816567B1 EP 2816567 B1 EP2816567 B1 EP 2816567B1 EP 14168409 A EP14168409 A EP 14168409A EP 2816567 B1 EP2816567 B1 EP 2816567B1
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EP
European Patent Office
Prior art keywords
metal
carbon nanotubes
metal tube
carried out
iii
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.)
Not-in-force
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EP14168409.2A
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English (en)
French (fr)
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EP2816567A1 (de
Inventor
Emilien Comoret
Christian-Eric Bruzek
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Nexans SA
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Nexans SA
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
    • C22C49/04—Light metals
    • C22C49/06—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C22C2026/002—Carbon nanotubes

Definitions

  • the present invention relates to a method for manufacturing a conductor comprising functionalized carbon nanotubes and at least one metal, to an elongate electrically conductive element obtained by the implementation of said method and to an electrical cable comprising such a conductive element. .
  • low-voltage in particular less than 6kV
  • medium-voltage in particular 6 to 45-60 kV
  • high-voltage especially greater than 60 kV
  • the invention relates to an electrical cable having good mechanical properties and electrical conductivity.
  • US 2011/0003174 discloses a method of manufacturing an electrically conductive member comprising carbon nanotubes.
  • a method comprising a step of functionalizing carbon nanotubes to obtain functionalized carbon nanotubes, and a step of contacting said functionalized carbon nanotubes with metal particles to form a composite material, said composite material being able to be used to the manufacture of electric cables.
  • the step of functionalization of the carbon nanotubes according to this process makes it possible to obtain carbon nanotubes which have, on the surface, particular chemical groups, such as enol functions.
  • this method does not describe the steps for the manufacture of an electrical cable from said composite material, and therefore does not guarantee an electrical cable having good mechanical and electrical properties.
  • the object of the present invention is to overcome the disadvantages of the techniques of the prior art by proposing a method of manufacturing an electrical conductor comprising functionalized carbon nanotubes and at least one metal, said method being easy to implement and to guarantee and maintain a good mechanical and electrical charge transfer between the metal and the carbon nanotubes and thus to obtain a conductor with good mechanical and electrical properties.
  • an elongated electrically conductive element comprising functionalized carbon nanotubes and at least one metal can thus be easily formed, while having good mechanical properties and electrical conductivity.
  • Carbon nanotubes are in particular an allotropic form of carbon belonging to the family of fullerenes.
  • the carbon nanotubes are layers of graphene wound on themselves and closed at their ends by half-spheres similar to fullerenes.
  • the carbon nanotubes comprise both single-walled nanotubes ( single wall carbon nanotubes, SWNTs ) comprising a single sheet of graphene and multiwall or multiwall nanotubes (in English: Multi Wall Carbon Nanotubes, MWNT ) comprising several sheets of graphene nested inside each other in the manner of Russian dolls, or a single sheet of graphene rolled up several times on itself.
  • “Functionalized” carbon nanotubes are understood to mean carbon nanotubes that have chemical groups on the surface. Said chemical groups may represent sites of attachment between the carbon nanotubes, and / or between the metal and the carbon nanotubes during the implementation of step i).
  • Such chemical groups may be chosen from SO 3 H, COOH, PO 3 H 2 , OOH, OH, CHO, CN, COCI, X, COSH, SH, R'CHOH, NHR ', COOR', SR ', CONHR'. , OR ', NHCO 2 R' and R ", where X is a halogen, R 'is selected from hydrogen, alkyl, aryl, arylSH, cycloalkyl, aralkyl, cycloaryl and poly (alkylether) and R" is selected from fluoroalkyl, fluoroaryl , fluorocycloalkyl and fluoroaralkyl. Carbon nanotubes are thus functionalized by the direct incorporation on the surface of such chemical groups. This modification represents a covalent surface modification.
  • commercial grades of functionalized carbon nanotubes can be used directly during the implementation of step i) of the process according to the invention.
  • This prior step a) makes it possible to obtain functionalized carbon nanotubes which will be used during step i).
  • the methods of functionalization of carbon nanotubes are well known to those skilled in the art.
  • said surface oxidation can be carried out by dissolving nonfunctionalized carbon nanotubes by ultrasonically dispersing them in a solvent such as a lower alcohol (i.e., an alcohol having from 1 to 5 carbon atoms), and adding to the dispersion an oxidizing agent such as the nitric acid / sulfuric acid mixture or hydrogen peroxide.
  • Functionalized carbon nanotubes having, on the surface, oxygenated chemical groups of the type consisting of diketones, ethers, carboxylic acids, esters, hydroxyls, enols, etc., are thus obtained.
  • the functionalization of the carbon nanotubes advantageously improves the dispersion of the carbon nanotubes in the composite mixture and, therefore, promotes the transfer of mechanical charge and between the carbon nanotubes, and between the metal and the carbon nanotubes.
  • carbon nanotubes as such i.e., non-functionalized carbon nanotubes
  • carbon nanotubes even if they have excellent electrical, thermal and mechanical properties, are difficult to disperse in the composite mixture.
  • the amount of functionalized carbon nanotubes in the composite mixture of step i) of the process according to the invention may range from about 0.3 to 15% by weight and preferably from 5 to 10% by weight. % about.
  • the metal used in step i) may be chosen from among copper, aluminum, silver, a copper alloy, an aluminum alloy, a silver alloy and one of their mixtures.
  • the mixture according to step i) is made by solid route.
  • said solid mixture is made by mechanical mixing of the functionalized carbon nanotubes with at least one metal, said functionalized carbon nanotubes and said metal being in the form of powders.
  • said mechanical mixture can be carried out at room temperature, and preferably under a non-oxidizing atmosphere.
  • Said mechanical mixture of carbon nanotubes functionalized with at least one metal is a method of mixing powders that is easy to implement, and can be carried out using, for example, means such as a planetary mixer, an ultrasonic apparatus, a steel or ceramic ball mixer, said means being able to be used alone or in combination.
  • the mixture according to step i) is produced by liquid means, that is to say by placing in solution the functionalized carbon nanotubes and at least one metal.
  • Said liquid mixture may in particular be carried out by applying ultrasound to the functionalized carbon nanotubes and to at least one metal placed in solution.
  • This method is particularly suitable in the case where the functionalized carbon nanotubes of step 1a) have been previously functionalized according to step a) by surface oxidation.
  • This mixing method allows the functionalized carbon nanotubes to be implanted directly between the metal particles and not simply deposited on the surface of the metal particles.
  • this mixing step i) is carried out by solid or liquid route (first and second variants), the nanotube agglomerates of functionalized carbon break and can thus distribute homogeneously in the composite mixture.
  • the metal used in step i) comprises metal particles having an average particle size size ranging from 10 nm to 50 ⁇ m and preferably from 10 nm. at 50 nm.
  • step 3b) can be carried out by techniques well known to those skilled in the art such as mechanical stirring, magnetic stirring or the use of an electromagnetic current.
  • the metal used in step i) is in the form of a brick.
  • the functionalized carbon nanotubes used in step i) having an average diameter of diameter ranging from 1 nm to 50 nm.
  • Step ii) makes it possible to densify the composite mixture of step i), and thus to obtain a solid mass, in particular of the one-piece type such as, for example, a solid bar.
  • step ii) can be performed by sintering, that is to say by consolidation by action of heat.
  • Step ii) is preferably carried out by flash sintering.
  • step ii) is carried out by flash sintering at a pressure that may range from about 10 to 100 bars and / or at a temperature that may range from about 400 to 900 ° C.
  • a pressure that may range from about 10 to 100 bars and / or at a temperature that may range from about 400 to 900 ° C.
  • the metal used is aluminum, it is preferred to apply a temperature ranging from 400 to 550 ° C and in the case where the metal used is copper, it is preferred to apply a temperature ranging from 700 to 900 ° C about.
  • the flash sintering time may preferably range from a few seconds to a few hours.
  • step ii) is carried out by flash sintering, the control of the diffusion of the functionalized carbon nanotubes in the composite mixture is easier and the risk of degradation of the nanotubes carbon / metal interfaces is avoided.
  • the chemical groups serving as attachment sites on the surface of the carbon nanotubes react with the metal during this step ii), thus making it possible to obtain a good interface between the metal and the carbon nanotubes.
  • step iii a solid element is introduced into a metal tube according to step iii), this solid element being obtained directly or indirectly from the solid mass of step ii).
  • the solid element of step iii) is the solid mass as obtained in step ii).
  • step iii) is obtained according to at least one intermediate step between step ii) and step iii).
  • the solid element of step iii) comprises granules.
  • Step ii-1) of the process according to the invention may be carried out by grinding, using apparatus such as ball mill, hammer, grinding wheel, knives, jet gas or the using any other grinding system capable of transforming the solid mass of step ii) into granules.
  • This transformation step ii-1) makes it possible to obtain a homogeneous distribution of the functionalized carbon nanotubes in the composite mixture following the steps of mixing i) and forming a solid mass ii).
  • the granules have an average size ranging from about 1 to 200 microns, and preferably from 1 to about 50 microns. This facilitates the flow of the granules in the metal tube and the deformation of said metal tube containing said granules in the following steps iii) and iv).
  • the granules are too small, that is to say less than 1 micron size, they clog the tools with which they are in contact.
  • the granules are too large, that is to say greater than 200 ⁇ m in size, the stresses suffered by said granules during step iv) of deformation of the metal tube are difficult to achieve. control and may be too important and, as a result, lead to the degradation of nanotubes carbon / metal interfaces.
  • the solid element of step iii) is a solid mass different from the solid mass of step ii).
  • This step ii-2) makes it possible to obtain a solid mass, in particular of the one-piece type such as for example a solid bar.
  • the compacting is preferably carried out using a hydraulic press or an isostatic press, cold or hot. Said compaction is preferably carried out with the aid of a hydraulic press and / or cold, to allow easier handling of the composite mixture.
  • the solid mass thus formed according to this step ii-2) can be more easily and more rapidly introduced than the granules in the metal tube during the next step iii).
  • step ii) or of step ii-2), or the granules of step ii-1) are then introduced into a metal tube according to step iii) of the process according to the invention .
  • the metal tube of step iii) is a metal tube whose metal is selected from among copper, aluminum, silver, a copper alloy, an aluminum alloy, a silver alloy and a mixture thereof.
  • step iv) of deformation of the metal tube of step iii) makes it possible to deform said metal tube, and thus to obtain a metal tube with the desired dimensions and shape.
  • step iv) is carried out by spinning and / or by drawing and / or by rolling and / or hammering.
  • step iv) the solid element of step iii) moves and is oriented in the metal tube so as to minimize its deformation and thus the stresses it undergoes.
  • Stage v) of heating the metal tube makes it possible to expand the outer casing of said metal tube so as to create space for the granules or the solid mass to be able to move again without stress during a deformation step higher.
  • the heating according to step v) can be carried out at a temperature ranging from about 200 to 500 ° C., and preferably from about 200 to 300 ° C., optionally under a neutral or reducing atmosphere, in particular at using an electric oven, an induction oven or a gas oven.
  • a temperature ranging from about 200 to 500 ° C., and preferably from about 200 to 300 ° C. optionally under a neutral or reducing atmosphere, in particular at using an electric oven, an induction oven or a gas oven.
  • a temperature range carbon nanotubes as well as nanotube carbon / metal interfaces are little or not solicited.
  • said carbon / metal nanotube interfaces and the functionalization of the carbon nanotubes are preserved during said step v).
  • the method further comprises step vi) deformation of said metal tube.
  • Step vi) of deformation of the metal tube serves to deform said metal tube, and thus to obtain a metal tube of the desired size and shape.
  • step vi) is carried out by spinning and / or drawing and / or by rolling and / or hammering.
  • step vi the solid element of step iii) moves and is oriented in the metal tube so as to minimize its deformation and thus the stresses it undergoes.
  • steps v) and vi) are performed as many times as necessary to obtain the metal tube with the desired final dimensions and shape.
  • the heating of the metal tube can be achieved by conventional sintering, flash sintering or melting. It makes it possible to redensify the solid element of step iii), and thus to obtain and / or maintain a good interface between the metal and the carbon nanotubes.
  • step vii) is carried out by flash sintering.
  • the final heating step vii) of the deformed metal tube of step iv) or vi) allows to "reactivate" the nanotube interfaces of carbon / metal if they have been slightly deteriorated during steps iv), and v) and vi) if they exist.
  • the nanotube carbon / metal interfaces are not or very little mechanically solicited and they are preserved throughout the process.
  • This method then makes it possible to obtain an elongated electrically conductive element having good electrical properties, especially in terms of conductivity, and mechanical properties.
  • the present invention also relates to an elongate electrically conductive element obtained by the method as defined in the present invention.
  • the process according to the invention makes it possible to obtain an elongate electrically conductive element having a mechanical strength 2 to 3 times greater than that obtained with an elongated electrically conductive element formed solely of a metal of the copper or aluminum type. , silver or one of their alloy, and an electrical conductivity increased by about 20% with respect to the latter.
  • the present invention also relates to an electrical cable comprising an elongate electrically conductive element obtained by the method as defined in the present invention.
  • the cable has improved mechanical and electrical properties.
  • the electric cable according to the invention may be an electric cable type energy cable.
  • the elongate electrical conductive element of the invention is surrounded by a first semiconductor layer, the first semiconductor layer being surrounded by an electrically insulating layer, and the electrically insulating layer being surrounded by a second semiconductor layer. -conductrice.
  • the first semiconductor layer, the electrically insulating layer and the second semiconductor layer constitute a three-layer insulation.
  • the electrically insulating layer is in direct physical contact with the first semiconductor layer
  • the second semiconductor layer is in direct physical contact with the electrically insulating layer.
  • the electrical cable of the invention may further comprise a metal screen surrounding the second semiconductor layer.
  • This metal screen may be a "wired” screen composed of a set of copper or aluminum conductors arranged around and along the second semiconductor layer, a so-called “ribbon” screen composed of one or more ribbons conductive metal laid helically around the second semiconductor layer, or a so-called “waterproof” screen of metal tube type surrounding the second semiconductor layer.
  • This last type of screen makes it possible in particular to provide a moisture barrier that tends to penetrate the electrical cable radially.
  • All types of metal screens can play the role of grounding the electric cable and can thus carry fault currents, for example in the event of a short circuit in the network concerned.
  • the cable of the invention may comprise an outer protective sheath surrounding the second semiconductor layer, or more particularly surrounding said metal screen when it exists.
  • This outer protective sheath can be made conventionally from suitable thermoplastic materials such as HDPE, MDPE or LLDPE; or else materials retarding the propagation of the flame or resistant to the propagation of the flame. In particular, if they do not contain halogen, it is called cladding type HFFR (for the Anglicism " Halogen Free Flame Retardant ").
  • Other layers such as swelling layers in the presence of moisture may be added between the second semiconductor layer and the metal screen when it exists and / or between the metal screen and the outer sheath where they exist , these layers for insuring the longitudinal tightness of the electric cable to water.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Powder Metallurgy (AREA)

Claims (17)

  1. Verfahren zur Herstellung eines länglichen elektrisch leitenden Elements, das funktionalisierte Kohlenstoff-Nanoröhrchen und mindestens ein Metall umfasst, das den folgenden Schritt umfasst:
    i) Mischen der funktionalisierten Kohlenstoff-Nanoröhrchen mit mindestens einem Metall, um ein Verbundgemisch zu erhalten,
    wobei das Verfahren dadurch gekennzeichnet ist, dass das Verfahren ferner die folgenden Schritte umfasst:
    ii) Formen einer festen Masse aus dem Verbundgemisch von Schritt i),
    iii) Einführen eines festen Elements, erhalten aus der festen Masse von Schritt ii), in ein Metallrohr und
    iv) Entformen des Metallrohrs von Schritt iii), um ein längliches elektrisch leitendes Element zu erhalten.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass es ferner vor Schritt i) den folgenden Schritt umfasst:
    a) Funktionalisieren der Kohlenstoff-Nanoröhrchen.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass bei Schritt i) die Menge funktionalisierter Kohlenstoff-Nanoröhrchen in dem Verbundgemisch 0,3 bis 15 Gew.-% beträgt.
  4. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das in Schritt i) verwendete Metall aus dem Kupfer, dem Aluminium, dem Silber, einer Kupferlegierung, einer Aluminiumlegierung, einer Silberlegierung und einem seiner/ihrer Gemische ausgewählt ist.
  5. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt ii) durch Flash-Sintern durchgeführt wird.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das Flash-Sintern bei einem Druck von 10 bis 100 bar durchgeführt wird.
  7. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass das Flash-Sintern bei einer Temperatur von 400 bis 900 °C durchgeführt wird.
  8. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es zwischen dem Schritt ii) und dem Schritt iii) den folgenden Schritt umfasst:
    ii-1) Umwandeln der festen Masse von Schritt ii) in Granulat.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass der Schritt ii-1) erlaubt, Granulat in einer Größe von 1 bis 50 µm zu erhalten.
  10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass es zwischen dem Schritt ii-1) und dem Schritt iii) den folgenden Schritt umfasst:
    ii-2) Formen einer festen Masse aus Granulat von Schritt ii-1).
  11. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Metallrohr ein Metallrohr ist, dessen Metall aus dem Kupfer, dem Aluminium, dem Silber, einer Kupferlegierung, einer Aluminiumlegierung, einer Silberlegierung und einem seiner/ihrer Gemische ausgewählt ist.
  12. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es ferner nach Schritt iv) die folgenden Schritte umfasst:
    v) Erwärmen des Metallrohrs, so wie nach Schritt iv) entformt, und
    vi) Entformen des Metallrohrs von Schritt v).
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass das Erwärmen gemäß Schritt v) auf eine Temperatur von 200 bis 500 °C erfolgt.
  14. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es ferner den folgenden Schritt umfasst:
    vii) Erwärmen des entformten Metallrohrs.
  15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass der Schritt vii) durch Flash-Sintern durchgeführt wird.
  16. Längliches elektrisch leitendes Element, erhalten durch das Verfahren nach einem der Ansprüche 1 bis 15.
  17. Stromkabel, dadurch gekennzeichnet, dass es ein längliches elektrisch leitendes Element nach Anspruch 16, eine erste halbleitende Schicht, die das längliche elektrisch leitende Element umgibt, eine elektrisch isolierende Schicht, die die erste halbleitende Schicht umgibt und einen zweite halbleitende Schicht, die die elektrisch isolierende Schicht umgibt, umfasst.
EP14168409.2A 2013-06-17 2014-05-15 Herstellungsverfahren eines elektrisch leitenden länglichen elements Not-in-force EP2816567B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1355615A FR3007189B1 (fr) 2013-06-17 2013-06-17 Procede de fabrication d'un element electriquement conducteur allonge

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EP2816567A1 EP2816567A1 (de) 2014-12-24
EP2816567B1 true EP2816567B1 (de) 2016-02-17

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US (1) US9818497B2 (de)
EP (1) EP2816567B1 (de)
CA (1) CA2851729A1 (de)
ES (1) ES2569403T3 (de)
FR (1) FR3007189B1 (de)

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US20100221526A1 (en) 2007-09-18 2010-09-02 Shimane Prefectural Government Metal-coated carbon material and carbon-metal composite material using the same
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KR101078079B1 (ko) * 2008-12-10 2011-10-28 엘에스전선 주식회사 은 수식 탄소 나노튜브 함유 전도성 페이스트 조성물
EP2478124A1 (de) * 2009-09-17 2012-07-25 Bayer MaterialScience AG Verbundwerkstoff mit einem metall und nanopartikeln
FR2950333B1 (fr) * 2009-09-23 2011-11-04 Arkema France Procede de fonctionnalisation de nanotubes
US20120263951A1 (en) * 2011-04-15 2012-10-18 Los Alamos National Security, Llc. Electrically conducting nanocomposite wire comprising tow of multiwalled carbon nanotubes and transverse metal bridges
US8853540B2 (en) * 2011-04-19 2014-10-07 Commscope, Inc. Of North Carolina Carbon nanotube enhanced conductors for communications cables and related communications cables and methods
US20160057544A1 (en) * 2014-08-21 2016-02-25 Plugged Inc. Carbon Nanotube Copper Composite Wire for Acoustic Applications

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US20140367145A1 (en) 2014-12-18
CA2851729A1 (fr) 2014-12-17
FR3007189B1 (fr) 2015-05-22
FR3007189A1 (fr) 2014-12-19
EP2816567A1 (de) 2014-12-24
ES2569403T3 (es) 2016-05-10

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