EP2148335A1 - Isolierende Rohrleitungumhüllung für Stromkabel - Google Patents

Isolierende Rohrleitungumhüllung für Stromkabel Download PDF

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Publication number
EP2148335A1
EP2148335A1 EP09162135A EP09162135A EP2148335A1 EP 2148335 A1 EP2148335 A1 EP 2148335A1 EP 09162135 A EP09162135 A EP 09162135A EP 09162135 A EP09162135 A EP 09162135A EP 2148335 A1 EP2148335 A1 EP 2148335A1
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EP
European Patent Office
Prior art keywords
electrical cable
cable according
hydrocarbon resin
composition
electrical
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09162135A
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English (en)
French (fr)
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EP2148335B1 (de
Inventor
Christèle KENSICHER
Valéry Alcaraz
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Nexans SA
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Nexans SA
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Publication of EP2148335B1 publication Critical patent/EP2148335B1/de
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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
    • H01B7/295—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
    • 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
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • 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

Definitions

  • the present invention relates to an electrical cable comprising one or more electrical conductors surrounded by a tubular (or tubular) polymeric layer, and to a method of manufacturing said electrical cable.
  • a conventional electrical cable comprises a set of insulated electrical conductors surrounded by a protective sheath.
  • the insulation of the electrical conductors or the protective sheath may be obtained by an extrusion said to be in compression or tamping, or a so-called tubular or tubular extrusion.
  • Compression extrusion requires a much larger amperage of the extruder motor than tubing extrusion, which involves premature wear of the extruder motor.
  • compression extrusion results in higher extruder head pressures than tubing extrusion which can also cause greater wear on extruder head tools such as punches, dies, clamps, or the like. the different threads.
  • the tubular extrusion induces a stretching of the hot polymer material at the exit of the extruder, which is not the case with the extrusion in compression.
  • the risk of tearing of the layer formed at the exit of the extruder is relatively high.
  • the cohesion of the polymeric material in the molten state at the exit of the extruder is generally not sufficient to allow tubular type extrusion, especially when the polymeric material is loaded.
  • the object of the present invention is to overcome the drawbacks of the solutions of the state of the art by offering in particular a composition used as a polymeric layer for electric cable having good mechanical properties in order to avoid the tearing of said layer during the extrusion of the composition and significantly limit the wear of the tools of the extruder during the extrusion of this composition.
  • the solution according to the present invention is to propose an electrical cable comprising one or more electrical conductors, and a tubular (or tubular) polymeric layer surrounding the electrical conductor or conductors, said tubular layer being obtained from a composition comprising a thermoplastic polymer. and a hydrocarbon resin.
  • the tubular extrusion of the composition according to the present invention advantageously makes it possible to guarantee equivalent mechanical properties, even greater than those obtained with conventional compositions used in stuffing extrusion, the hydrocarbon resin thus helping to reduce the viscosity of the composition and to limit therefore the pressures inside the extruder.
  • tubular extrusion makes it possible, on the one hand, to significantly limit the amperage of the extruder motor, or in other words to limit the premature wear of the extruder motor, and on the other hand to significantly reduce tool wear at the extruder head, since this type of process does not generate pressures as high as compression extrusion
  • tubular layer means a tube-shaped layer of a certain thickness whose inner surface and the outer surface are respectively two cylinders substantially concentric.
  • the tubular layer may be an electrical insulation surrounding at least one electrical conductor of the electric cable and thus form at least one insulated electrical conductor, preferably each electrical conductor of the electrical cable is isolated in this way .
  • the electrical conductor may be a bulk or multi-strand conductor.
  • said electrical insulation is directly in contact with said electrical conductor.
  • the tubular layer may be a protective sheath (or electrical sheath) surrounding a set of at least two insulated electrical conductors.
  • the electrical sheath does not fill the interstices between the conductive elements and thus provides empty spaces between it and the insulated electrical conductors it surrounds, in particular empty spaces occupy at least 10% of the section of the electric cable.
  • the electrical jacket leaves the insulated electrical conductors free within said layer.
  • the first and the second variant can be combined.
  • the tubular extrusion is economically advantageous since it makes it possible to reduce the quantity of polymeric material used compared with a so-called compression extrusion.
  • the tubular extrusion inducing a stretch of the polymeric material at the hot extruder outlet, provides a material gain of up to 20% compared to a compression extrusion.
  • thermoplastic polymer of the composition according to the present invention is in no way limiting.
  • thermoplastic polymer can be any type of thermoplastic polymer well known to those skilled in the art capable of being extruded, the polymer can be crosslinkable or not.
  • the thermoplastic polymer is preferably an olefin polymer, selected from an olefin homopolymer, and an olefin copolymer, or a mixture thereof.
  • thermoplastic polymer is advantageously chosen from a homopolymer or copolymer of ethylene, and a homopolymer or copolymer of propylene, or a mixture thereof.
  • the thermoplastic polymer is chosen from an ethylene homopolymer, an ethylene-octene copolymer (PEO), a copolymer of ethylene and vinyl acetate (EVA), and a copolymer of ethyl propylene diene monomer (EPDM), or a mixture thereof.
  • PEO ethylene-octene copolymer
  • EVA ethylene and vinyl acetate
  • EPDM ethyl propylene diene monomer
  • thermoplastic polymer may be a mixture of several thermoplastic polymers, or a mixture of at least one major thermoplastic polymer in the mixture and at least one other polymer of different nature.
  • the tubular layer of the electric cable according to the present invention is crosslinked.
  • thermoplastic polymer of the composition is grafted silane to be crosslinked by a method well known to those skilled in the art called "silane crosslinking", and thus obtain said reticulated tubular layer.
  • the composition further comprises a crosslinking agent, such as, for example, an organic peroxide.
  • a crosslinking agent such as, for example, an organic peroxide.
  • the hydrocarbon resin according to the invention is a thermoplastic polymer (co- or homopolymer) comprising predominantly carbon and hydrogen, and optionally heteroatoms such as oxygen, nitrogen or sulfur, the hydrocarbon resin being different from thermoplastic polymer of the composition.
  • the hydrocarbon resin is preferably composed of carbon and hydrogen. It may be of the aliphatic and / or aromatic type. Its molecular weight is relatively low and can be generally between 300 g / mol and 10,000 g / mol.
  • the hydrocarbon resin preferably has a softening point ranging from 70 ° C to 160 ° C, preferably at most 140 ° C.
  • the hydrocarbon resin comprises as monomeric unit (or elementary unit) a C-5 alkyl chain, preferably the hydrocarbon resin is in this case aliphatic.
  • this type of resin preferably has a softening point ranging from 75 to 115 ° C.
  • the hydrocarbon resin comprises as monomeric unit (or elementary unit) a C-9 alkyl chain, preferably the hydrocarbon resin is in this case aromatic.
  • this type of resin preferably has a softening point ranging from 100 to 140 ° C.
  • the softening point of the hydrocarbon resin is determined according to the Ring & Ball method according to ASTM E 28.
  • hydrocarbon resin is typically made according to the nature of the thermoplastic polymer in the composition.
  • thermoplastic polymer of the composition Depending on the physico-chemical affinities between the thermoplastic polymer of the composition and the more or less aliphatic or aromatic nature of the hydrocarbon resin, it is well known that the mixture will be carried out so as to obtain a homogeneous mixture between the polymer and the resin hydrocarbon.
  • thermoplastic polymer is a polar polymer, for example EVA with at least 40% of vinyl acetate groups
  • hydrocarbon resin will preferably be chosen from aromatic resins.
  • thermoplastic polymer is an apolar polymer, such as, for example, ethylene-octene (PEO) copolymer or EVA with at most 28% vinyl acetate groups
  • hydrocarbon resin will preferably be chosen from aliphatic resins.
  • Table 1 summarizes the various characteristics of some hydrocarbon resins marketed by Eastman. ⁇ b> ⁇ u> Table 1 ⁇ / u> ⁇ /b> Softening point (° C) Aliphatic hydrocarbon resin Aliphatic / aromatic mixed hydrocarbon resin Aromatic hydrocarbon resin 155 Plastolyn R1 140 Endex 155 Plastolyn 290 135/145 Regalite R1125 Picco A140 110/125 Piccotac 1100E Piccotac 1105E Regalite S7125 Picoo A120 Kristalex F115 Kristalex F100 Picco A100 100 Regalite R1100 Regalite R9100 Regalite R7100 Picco B100 Picco AR100 95 Piccotac 1094E Regalite S5100 Piccotac 6095E 70/90 Regalite R1090 Regalite R1010 Kristalex F85
  • the composition according to the invention may comprise at most 10 parts by weight (phr) of hydrocarbon resin per 100 parts by weight of polymer in the composition, preferably at most 8 phr of hydrocarbon resin per 100 phr of polymer in the composition, and more preferably at most 5 phr of hydrocarbon resin per 100 phr of polymer in the composition.
  • the upper limit of 10 phr of hydrocarbon resin makes it possible to advantageously limit the disturbances of the crosslinking when the composition is crosslinked, unsatisfactory creep type disturbances, and to guarantee good resistance to oils.
  • composition according to the invention may comprise at least 1 phr of hydrocarbon resin per 100 parts by weight of polymer, preferably at least 2 phr of hydrocarbon resin, 100 parts by weight of polymer.
  • the composition further comprises a flame retardant filler.
  • the flame retardant filler may be a metal hydroxide, preferably magnesium dihydroxide (MDH) or aluminum trihydroxide (ATH).
  • MDH magnesium dihydroxide
  • ATH aluminum trihydroxide
  • the composition further comprises a wax, preferably the wax is a fatty acid amide, to facilitate the extrusion of the composition.
  • the fatty acid amide can be, for example, chosen from the following families: acetamide, propionamide, n-butyramide, n-valeramide, n-caproamide, stearamide, erucamide, lauroylamide, miristique amide, arachidamide, behenamide, oleamide, ethylene- bis-stearamide, ethylene-bis-oleamide, and oleyl palmitamide, or their mixture.
  • the composition further comprises at least one protective agent chosen from antioxidants, and metal deactivators, or their mixture, the metal deactivators making it possible to limit the catalytic degradation of the tubing layer by the metal of the metal. electrical conductor when it directly surrounds said electrical conductor.
  • at least one protective agent chosen from antioxidants, and metal deactivators, or their mixture, the metal deactivators making it possible to limit the catalytic degradation of the tubing layer by the metal of the metal. electrical conductor when it directly surrounds said electrical conductor.
  • Antioxidants can typically be thioesters or hindered phenols, while metal deactivators are phenolic compounds well known to those skilled in the art.
  • the advantage of such a process, compared to a stuffing type extrusion process, is that the hydrocarbon resin helps to reduce the viscosity of the composition and thereby limit the pressures inside the extruder. .
  • Tubing extrusion is well known to those skilled in the art. It typically consists in using an extruder comprising a straight extrusion head and a die with a punch. The front end of the punch at the exit of the extruder is substantially at the same level as the front end of the die. The right extrusion head allows to let the flow of material through the die which gives it the shape of the desired section through the punch, namely a tubular shape.
  • the figure 1 is a schematic sectional view of an electric cable according to the present invention.
  • the electric cable 10 shown on the figure 1 comprises three electrical conductors 1, an electrical insulation 2 around each electrical conductor 1, and an outer protective sheath 3, electrically insulating, said sheath 3 surrounding all of the insulated electrical conductors.
  • the outer sheath 3 is obtained from a tubularly extruded composition according to the present invention. This tubular outer sheath 3 thus provides empty spaces 4 between it and the insulated electrical conductors that it surrounds.
  • each electrical conductor can also be obtained from a tubularly extruded composition according to the present invention.
  • the measurement of the hot creep of a material under mechanical stress is determined according to the standard NF EN 60811-2-1.
  • This corresponding test is commonly designated by the Anglemia Hot Set Test and consists in ballasting one end of a dumbbell type test piece H2 with a mass corresponding to the application of a stress equivalent to 0.2 MPa, and placing the together in an oven heated at 200 +/- 1 ° C for a period of 15 minutes.
  • the suspended mass is then removed, and the test piece is kept in the oven for another 5 minutes.
  • the remaining permanent elongation also called remanence (or remanent elongation) is then measured before being expressed in%.
  • test result would then logically be considered a failure.
  • the mechanical properties of a crosslinked layer are determined by cutting specimens of the dumbbell type H2 according to the standard NF EN 60811-1-1.
  • the specimens thus prepared and whose thickness is measured accurately, are then tested on a mechanical test bench.
  • the pulling speed is 200 mm / min.
  • the preparation of the insulating layers, and in particular their crosslinking mode, are given by way of example and are in no way limiting.
  • a first step 95 parts by weight of an ethylene polymer, 5 parts by weight of a propylene polymer and 2.5 parts by weight of a silane crosslinking agent are continuously blended and heated. alkoxysilane or carboxysilane type together with an organic peroxide, using a Buss single-screw mixer or a twin-screw extruder.
  • the propylene polymer advantageously makes it possible to improve the breaking strength and the resistance to oils of the composition, but this polymer is not essential for producing the composition according to the present invention.
  • the temperature of the mixture of this first stage is such that it typically makes it possible to use the polymer while decomposing the organic peroxide.
  • the ethylene polymer is a homopolymer of ethylene, referenced Exceed 3518CB and sold by Exxon Mobil.
  • the propylene polymer is a propylene copolymer, referenced Moplen RP315M and sold by the company Basell.
  • silane crosslinking agent and the organic peroxide are the compound marketed by Evonik under the reference Silfin 13.
  • This first step makes it possible to obtain a silane grafted polymer, more particularly a polymer mixture whose polyethylene is grafted silane, the silane grafted polymer being typically obtained in the form of granules.
  • silane graft polymer 100 parts by weight of silane graft polymer were continuously blended with the various amounts of wax, protective agents and flame retardant fillers detailed in Table 2.
  • Table 2 The amounts mentioned in Table 2 are expressed in parts by weight per 100 parts by weight of silane graft polymer in the composition. ⁇ b> ⁇ u> Table 2 ⁇ / u> ⁇ /b> AT B Silane grafted PE 100 100 Hydrocarbon resin 0 3 Wax and protective agent 6.5 6.5 Fire-retardant loads 120 120
  • the hydrocarbon resin, the wax, the protective agents and the flame retardant fillers are added to the silane graft polymer using a conventional metering hopper.
  • the hydrocarbon resin is the resin sold by Keyser & Mackay, under the reference Piccotac 1105E (hydrocarbon resin with a softening point of 110/115 ° C) (CAS 152698-66-3).
  • the wax is a fatty acid amide referenced Crodamide 203, marketed by Croda France.
  • the protective agent is a mixture of antioxidants (Irganox 1010 and / or Irganox PS 802) and metal deactivators (Irganox 1024 and / or Naugard XL1).
  • the flame retardant fillers are a mixture of metal hydroxides and zinc borate.
  • the temperature of the mixture of this second step is such that it typically allows the granules of silane graft polymer to be used while avoiding the decomposition of the flame retardant fillers.
  • This second step makes it possible to obtain a grafted silane graft polymer, the charged silane graft polymer being typically obtained in the form of granules.
  • the granules of charged silane graft polymer are used in a single-screw extruder in the presence of a catalyst for the condensation reaction of silanol groups, such as, for example, the well-known dibutyl dilaurate (DBTL). of the skilled person.
  • a catalyst for the condensation reaction of silanol groups such as, for example, the well-known dibutyl dilaurate (DBTL). of the skilled person.
  • the catalyst is typically added to the charged silane graft polymer in the form of a respective masterbatch based on a polyolefin compatible with said graft polymer.
  • the masterbatch containing said catalyst is added in an amount of about 2% by weight to the loaded silane graft polymer.
  • the mixture of the charged silane graft polymer and the silanol condensation catalyst is extruded directly onto a multi-stranded copper wire having a section of 1 mm 2 , the extrusion being carried out in a tubular manner, with a thickness of about 2 mm to form a layer A obtained from composition A, and a layer B obtained from composition B.
  • the layer A (not containing hydrocarbon resin) can not be extruded in a tubing manner since it tears during extrusion.
  • the extrusion is carried out in a compressive manner with a minimum thickness of 2 mm, this thickness being out parts filling the interstices.
  • a fourth step the respective insulating layers A and B are crosslinked in the presence of water to obtain an insulated electrical conductor (respectively, conductors A and B).
  • the crosslinking of the composition may be carried out by photochemical means such as irradiation under beta radiation, or irradiation under ultraviolet radiation in the presence of a photoinitiator; or by self-crosslinking, i.e. due to humidity and ambient temperature.
  • photochemical means such as irradiation under beta radiation, or irradiation under ultraviolet radiation in the presence of a photoinitiator; or by self-crosslinking, i.e. due to humidity and ambient temperature.
  • Crosslinking in a salt bath or in a vapor tube in the presence of an organic peroxide are two other methods that can also be envisaged.
  • the pressure mentioned in Table 3 corresponds to the pressure measured continuously by a pressure sensor situated just before the entry of the extruder head of the extruder.
  • composition according to the present invention (B) thus makes it possible to be extruded in a tubing manner, that is to say having a material gain with respect to a so-called extrusion in compression, and to have mechanical properties superior to those extrusion compression.
  • a 100 parts by weight of a copolymer of ethylene and vinyl acetate comprising 28% of vinyl acetate groups and 2.5 parts by weight of polyethylene are continuously mixed and heated.
  • a silane crosslinking agent of the alkoxysilane or carboxysilane type together with an organic peroxide using a Buss single-screw mixer or a twin-screw extruder.
  • This first step takes place under the same conditions as those mentioned in the first step for the tubular extrusion of the crosslinked PE-based composition.
  • the copolymer of ethylene and vinyl acetate is an EVA referenced Escorene UL 328 and sold by Exxon Mobil.
  • silane crosslinking agent and the organic peroxide are a single compound marketed by Evonik under the reference Silfin 59.
  • silane graft polymer 100 parts by weight of silane graft polymer (granules) are continuously mixed and heated with the various amounts of wax, protective agents and flame retardant fillers detailed in Table 4 (compositions C to E).
  • the hydrocarbon resin, the wax, the protective agents and the flame retardant fillers are added to the silane graft polymer using a conventional metering hopper.
  • the hydrocarbon resin is the resin sold by Keyser and Mackay, under the reference Piccotac 1105E (hydrocarbon resin with a softening point of 110 ° -115 ° C.) (CAS 152698-66-3).
  • the wax is a fatty acid amide referenced Crodamide 203, marketed by Croda France.
  • the protective agent is a mixture of antioxidants (Irganox 1010 and / or Irganox PS 802) and metal deactivators (Irganox 1024 and / or Naugard XL1).
  • the flame retardant fillers are a mixture of metal hydroxides and zinc borate.
  • This second step takes place under the same conditions as those mentioned in the second step for the tubular extrusion of the crosslinked PE-based composition.
  • a third step the granules of charged silane graft polymer are used under the same conditions as those mentioned in the third step for the tubular extrusion of the crosslinked PE-based composition.
  • the mixture of the charged silane graft polymer and the silanol condensation catalyst is extruded directly onto a multi-stranded copper wire having a cross-section of 1 mm 2 , the extrusion being carried out on the one hand in a tubing manner to form the layers.
  • C1, D1 and E1 with a thickness of about 2 mm, respectively obtained from the compositions C, D and E, and secondly jamming, to form the layers C2, D2 and E2 with a minimum thickness of approximately 2 mm, respectively obtained from compositions C, D and E.
  • a fourth step the respective insulating layers C to E are crosslinked in the presence of water to obtain an isolated electrical conductor (respectively, conductors C to E).
  • the pressure mentioned in Table 5 corresponds to the pressure measured continuously by a pressure sensor situated just before the entry of the extruder head of the extruder.
  • the extruded layer of the conductor C1 is not extruded satisfactorily since the thickness of said layer is inhomogeneous.
  • the speed gain between the extrusion tubing with respect to the extrusion jamming is 15%, namely the maximum speed of the extrusion tubing before the layer tears at the exit of the extruder is 34 m / mm (extruded layer D1) against 29m / mm (extruded layer C1).
  • compositions according to the present invention (D1 and E1) thus allow to be extruded in a tubing manner, that is to say by limiting the pressure inside the extruder and thus by limiting the amperage of the motor. the extruder, and to exhibit equivalent mechanical properties (extruded layer D1) or even superior (extruded layer E1) to those of a compression extrusion.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)
  • Insulated Conductors (AREA)
EP20090162135 2008-06-26 2009-06-08 Isolierende Rohrleitungumhüllung für Stromkabel Not-in-force EP2148335B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0854271A FR2933228A1 (fr) 2008-06-26 2008-06-26 Couche tubante electriquement isolante pour cable electrique

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EP2148335A1 true EP2148335A1 (de) 2010-01-27
EP2148335B1 EP2148335B1 (de) 2014-10-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103474129A (zh) * 2013-09-04 2013-12-25 远程电缆股份有限公司 一种耐老化环保型电力电缆

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472035A2 (de) * 1990-08-03 1992-02-26 Quantum Chemical Corporation Flammhemmende, vernetzbare Polymerzusammensetzungen
EP1156066A1 (de) * 2000-05-05 2001-11-21 Nexans Zusammensetzung mit verbesserten thermomechanischen Eigenschaften und Verfahren zur Vernetzung davon
EP1247822A2 (de) * 2001-03-27 2002-10-09 Nexans Mit Silan vernetzte Polymerzusammensetzung, Verfahren zu deren Herstellung und zur Herstellung eines mit dieser Zusammensetzung beschichteten Kabels
US6524702B1 (en) * 1999-08-12 2003-02-25 Dow Global Technologies Inc. Electrical devices having polymeric members
JP2003115219A (ja) * 2001-10-04 2003-04-18 Sumitomo Chem Co Ltd 電線又はケーブル被覆用樹脂組成物
EP1502923A1 (de) * 2003-08-01 2005-02-02 Nexans Verfahren zur Extrusion und Vernetzung von gefüllten Polymerzusammensetzungen
EP1605474A2 (de) * 2004-06-07 2005-12-14 Nexans Kabel mit mehreren isolierten Leitern in einem Mantel und Herstellungsverfahren des Kabels.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472035A2 (de) * 1990-08-03 1992-02-26 Quantum Chemical Corporation Flammhemmende, vernetzbare Polymerzusammensetzungen
US6524702B1 (en) * 1999-08-12 2003-02-25 Dow Global Technologies Inc. Electrical devices having polymeric members
EP1156066A1 (de) * 2000-05-05 2001-11-21 Nexans Zusammensetzung mit verbesserten thermomechanischen Eigenschaften und Verfahren zur Vernetzung davon
EP1247822A2 (de) * 2001-03-27 2002-10-09 Nexans Mit Silan vernetzte Polymerzusammensetzung, Verfahren zu deren Herstellung und zur Herstellung eines mit dieser Zusammensetzung beschichteten Kabels
JP2003115219A (ja) * 2001-10-04 2003-04-18 Sumitomo Chem Co Ltd 電線又はケーブル被覆用樹脂組成物
EP1502923A1 (de) * 2003-08-01 2005-02-02 Nexans Verfahren zur Extrusion und Vernetzung von gefüllten Polymerzusammensetzungen
EP1605474A2 (de) * 2004-06-07 2005-12-14 Nexans Kabel mit mehreren isolierten Leitern in einem Mantel und Herstellungsverfahren des Kabels.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103474129A (zh) * 2013-09-04 2013-12-25 远程电缆股份有限公司 一种耐老化环保型电力电缆

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EP2148335B1 (de) 2014-10-08

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