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EP2498263B1 - elektrische Hochspannungs- und mittelspannungskabel - Google Patents

elektrische Hochspannungs- und mittelspannungskabel Download PDF

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Publication number
EP2498263B1
EP2498263B1 EP20120158603 EP12158603A EP2498263B1 EP 2498263 B1 EP2498263 B1 EP 2498263B1 EP 20120158603 EP20120158603 EP 20120158603 EP 12158603 A EP12158603 A EP 12158603A EP 2498263 B1 EP2498263 B1 EP 2498263B1
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Prior art keywords
cross
polyolefin
layer
cable according
aliphatic
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English (en)
French (fr)
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EP2498263A1 (de
Inventor
Jérôme Alric
Jean-Michel Marty
Yannick Goutille
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Nexans SA
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Nexans SA
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    • 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 electric cable. It applies typically, but not exclusively, to the fields of medium-voltage (in particular 6 to 45-60 kV) or high-voltage (in particular greater than 60 kV, and up to 800 kV) energy cables. , whether DC or AC.
  • the medium or high voltage energy cables typically comprise a central electrical conductor and, successively and coaxially around this electrical conductor, a semiconducting inner layer, an electrically insulating intermediate layer, a semiconducting outer layer, these three layers being crosslinked by techniques well known to those skilled in the art.
  • these three crosslinked layers are obtained from a composition based on a polyethylene polymer matrix associated with an organic peroxide of the dicumyl peroxide or tert-butyl peroxide cumyl (i.e. cumyl peroxide) type.
  • this type of peroxide decomposes and forms cross-linking by-products such as in particular methane, acetophenone, cumyl alcohol, acetone, tertiobutanol, alpha Styrene methyl and / or water.
  • cross-linking by-products such as in particular methane, acetophenone, cumyl alcohol, acetone, tertiobutanol, alpha Styrene methyl and / or water.
  • the object of the present invention is to overcome the drawbacks of the techniques of the prior art by proposing a medium or high voltage electrical cable, comprising a crosslinked layer whose manufacture significantly limits the presence of cross-linking by-products, such as for example methane and / or water, while ensuring optimum thermomechanical properties, such as hot creep, characteristics of the good crosslinking of said layer.
  • a medium or high voltage electrical cable comprising a crosslinked layer whose manufacture significantly limits the presence of cross-linking by-products, such as for example methane and / or water, while ensuring optimum thermomechanical properties, such as hot creep, characteristics of the good crosslinking of said layer.
  • the present invention firstly relates to an electrical cable comprising an electrical conductor, a first semiconductor layer surrounding the electrical conductor, a second electrically insulating layer surrounding the first layer, and a third semiconductor layer. surrounding the second layer, characterized in that at least one of these three layers is a crosslinked layer obtained from a crosslinkable composition comprising at least one polyolefin, and an aliphatic peroxide as crosslinking agent, characterized in that that the crosslinkable composition further comprises an aromatic compound comprising at least one aromatic ring and a single reactive function capable of grafting to the polyolefin.
  • the crosslinkable composition according to the first subject of the invention may further comprise at least one crosslinking agent comprising at least two identical or different reactive functional groups, which are able on the one hand to be grafted to the polyolefin, and on the other hand to participate in the crosslinking of the polyolefin.
  • the second subject of the present invention is an electrical cable comprising an electrical conductor, a first semiconductor layer surrounding the electrical conductor, a second electrically insulating layer surrounding the first layer, and a third semiconductor layer surrounding the second layer, on the other side.
  • the crosslinkable composition according to the second subject of the invention may further comprise an aromatic compound comprising at least one aromatic nucleus and a single reactive functional group capable of grafting to the polyolefin.
  • the crosslinking agent of the invention has the advantage of not forming cumyl alcohol as a by-product of crosslinking during the crosslinking the crosslinkable composition, and thus significantly reduces the presence of water within the crosslinked layer, while maintaining very good thermomechanical properties.
  • the thermomechanical properties for the crosslinked layer according to the invention can advantageously result in a maximum stress elongation under the standard NF EN 60811-2-1 of at most 100%, preferably at most 80%, and in a particularly preferred manner ranging from 60 to 80%.
  • the amount of methane formed is less than that formed during the decomposition of the cumyl peroxide: the presence of methane in the crosslinking by-products is therefore advantageously reduced.
  • the amount of aliphatic peroxide required is less than the amount of cumyl peroxide.
  • tertiary dialkyl aliphatic peroxides it will be preferred to use tertiary dialkyl aliphatic peroxides. This type of peroxide has a very good compromise between speed of crosslinking and the risk of roasting or pre-crosslinking during the implementation of the composition.
  • the peroxidic crosslinking of the crosslinkable composition according to the invention can be carried out under the action of heat and pressure, for example by means of a vulcanization tube under a nitrogen atmosphere, this crosslinking technique being well known to those skilled in the art.
  • the crosslinkable composition of the invention may comprise at most 3.00 parts by weight of aliphatic peroxide per 100 parts by weight of polymer (s) in the composition; preferably 1.50 parts by weight of aliphatic peroxide per 100 parts by weight of polymer (s) in the composition; preferably 1.25 parts by weight of aliphatic peroxide per 100 parts by weight of polymer (s) in the composition; and particularly preferably 1.10 parts by weight of aliphatic peroxide per 100 parts by weight of polymer (s) in the composition.
  • the crosslinkable composition does not comprise any aromatic peroxide, such as in particular dicumyl peroxides or their derivatives.
  • polyolefin as such generally means homopolymer or copolymer of olefin. It may in particular designate a thermoplastic polymer or an elastomer.
  • the olefin polymer is an ethylene homopolymer or an ethylene copolymer.
  • LLDPE linear low density polyethylene
  • LDPE low density polyethylene
  • MDPE medium density polyethylene
  • HDPE high density polyethylene
  • EVA copolymers of d ethylene and vinyl acetate
  • EBA methyl acrylate
  • EMA 2-hexylethyl acrylate
  • EPR copolymers of ethylene and alpha-olefins
  • PEO polyethylene-octene
  • PEB polyethylene-butene
  • EPR ethylene and propylene
  • EPDM terpolymers of ethylene propylene diene
  • LDPE low density polyethylene
  • low density a density that can range from 0.910 to 0.940 g / cm 3 , and preferably ranging from 0.910 to 0.930 g / cm 3 according to ISO 1183 (at a temperature of 23 ° C).
  • low density polyethylene can be obtained by a polymerization process in a high pressure tubular reactor, or in an autoclave reactor.
  • the crosslinkable composition may comprise more than 50.0 parts by weight of polyolefin per 100 parts by weight of polymer (s) (ie polymer matrix) in the composition, preferably at least 70 parts by weight of polyolefin per 100 parts by weight of polymer (s) in said composition, and particularly preferably at least 90 parts by weight of polyolefin per 100 parts by weight of polymer (s) in said composition.
  • the crosslinkable composition comprises a polymer matrix which is composed solely of a polyolefin or a mixture of polyolefins.
  • this crosslinking agent may comprise at least two reactive functions, identical or different, which are able on the one hand to be grafted to the polyolefin and, secondly, to participate in the crosslinking of the polyolefin (ie in the formation of the three-dimensional network of the crosslinked polyolefin), in the presence of the aliphatic peroxide of the invention.
  • said at least two reactive functions of the crosslinking agent are unsaturated functions.
  • the crosslinking coagent notably makes it possible to significantly reduce the proportion of peroxide to be used in the crosslinkable composition, while maintaining good thermomechanical properties such as hot creep, as well as a satisfactory crosslinking rate.
  • a coagent whose boiling temperature is sufficiently high so that it does not volatilize during the stage of implementation of the crosslinkable composition, in particular by extrusion, will be used.
  • the crosslinking agent may be chosen from 1,3-hexadiene; 1,4-hexadiene; 1,5-hexadiene; 2,3-dimethyl-1,3-butadiene; 2,4-hexadiene; 2-methyl-1,4-pentadiene; 3-methyl-1,3-pentadiene; 3-methyl-1,3-pentadiene; 1,6-heptadiene; 2,4-dimethyl-1,3-pentadiene; 2-methyl-1,5-hexadiene; 4-vinyl-1-cyclohexene; 1,7-octadiene; 2,5-dimethyl-1,5-hexadiene; 2,5-dimethyl-2,4-hexadiene; 5-ethylidene-2-norbornene; Vinyl-2 norbornene; 1,8-nonadiene; 7-methyl-1,6-octadiene; 1,5,9-decatriene; 2,6-Dimethyl-2,4,
  • the concentration of the coagent is preferably limited so as not to disturb the extrusion process of the crosslinkable composition of the invention.
  • the crosslinkable composition may comprise at most 3 parts by weight of crosslinking agent per 100 parts of polymer (s) in the crosslinkable composition. It will be preferred to use from 0.5 to 2 parts coagent weight per 100 parts by weight of polymer (s) in the crosslinkable composition.
  • the crosslinkable composition of the invention further comprises an aromatic compound comprising at least one aromatic ring, and a single reactive function capable of grafting to the polyolefin
  • said reactive function of the aromatic compound may be a vinyl function.
  • the crosslinked layer obtained from this crosslinkable composition has enhanced and durable properties in the field of electric cables, offering better resistance to water trees. More particularly, this relates to the resistance to electrical breakdown, and in particular the ability to dissipate the space charges that accumulate especially in high voltage cables under direct current.
  • the aromatic compound may be selected from styrene, styrene derivatives, and their isomers.
  • styrene derivatives By way of example of styrene derivatives, mention may be made of the compounds of the following general formula: wherein X is hydrogen, an alkyl group or an aryl group; and R is either a hydrogen, an alkyl group or an aryl group. More particularly, mention may be made of 4-methyl-2,4-diphenyl pentene and triphenyl ethylene.
  • styrene derivatives of the polycyclic aromatic hydrocarbon (PAH) type More particularly, mention may be made of vinyl naphthalene, for example 2-vinyl naphthalene; vinyl anthracene such as 9-vinyl anthracene or 2-vinyl anthracene; and vinyl phenanthrene such as 9-vinyl phenanthrene.
  • PAH polycyclic aromatic hydrocarbon
  • grafting of these aromatic compounds onto the polymer chain of the polyolefin is typically carried out during the crosslinking phase of the polyolefin, according to a radical addition mechanism well known to those skilled in the art, in the presence of tertiary alkylperoxide. aliphatic of the invention.
  • the crosslinkable composition according to the invention may further comprise at least one protective agent such as an antioxidant.
  • a protective agent such as an antioxidant.
  • Antioxidants help to protect the composition of thermal stresses generated during the cable manufacturing or cable operation steps.
  • the type of stabilizer and its level in the crosslinkable composition are conventionally chosen according to the maximum temperature experienced by the polymers during the production of the mixture and during the implementation by extrusion on the cable as well as according to the maximum duration of exposure to this temperature.
  • the crosslinkable composition may typically comprise from 0.1% to 2% by weight of antioxidant (s). Preferably, it may comprise at most 0.7% by weight of antioxidant (s), especially when the antioxidant is TMQ.
  • additives and / or other fillers well known to those skilled in the art may also be added to the crosslinkable composition of the invention such as scorch retarders; agents promoting implementation such as lubricants or waxes; compatibilizing agents; coupling agents; UV stabilizers; non-conductive charges; conductive charges; and / or semiconductor charges.
  • the crosslinked layer of the invention is the electrically insulating layer (ie second layer).
  • the crosslinkable composition may not comprise an (electrically) conductive filler and / or may not comprise a semiconductor filler.
  • At least two of the three layers of the cable are crosslinked layers, and preferably the three layers of the cable are crosslinked layers.
  • the crosslinkable composition When the crosslinkable composition is used for the manufacture of the semiconductor layers (first layer and / or third layer), the crosslinkable composition further comprises at least one (electrically) conductive filler or a semiconductor filler, in an amount sufficient to to make the composition crosslinkable semiconductor.
  • a layer is semiconductive when its electrical conductivity is at least 0.001 Sm -1 (Siemens per meter).
  • the crosslinkable composition used to obtain a semiconductor layer may comprise from 0.1 to 40% by weight of (electrically) conductive filler, preferably at least 15% by weight of conductive filler, and even more preferably at least 25% by weight. conductive charge weight.
  • the semiconductor filler may advantageously be chosen from carbon blacks, carbon nanotubes, and graphites, or a mixture thereof.
  • At least one of these three layers is an extruded layer, preferably two of these three layers are extruded layers, and more preferably, these three layers are extruded layers.
  • the first semiconductor layer, the second electrically insulating layer and the third semiconductor layer constitute a three-layer insulation.
  • the second electrically insulating layer is directly in physical contact with the first semiconductor layer
  • the third semiconductor layer is directly in physical contact with the second electrically insulating layer.
  • the electrical cable of the invention may further comprise a metal screen surrounding the third semiconductor layer.
  • This metal screen may be a "wired” screen, consisting of a set of copper or aluminum conductors arranged around and along the third semiconductor layer, a so-called “ribbon” screen composed of one or more ribbons conductive metal laid helically around the third semiconductor layer, or a so-called “sealed” type metal screen surrounding the third 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 act as grounding of the electric cable and can carry fault currents, for example in the event of a short circuit in the network concerned.
  • the electrical cable of the invention may comprise an outer protective sheath surrounding the third 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 materials retarding the propagation of the flame or resisting the spread of fire. In particular, if the latter materials do not contain halogen, it is called cladding type HFFR (for the Anglicism " Halogen Free Flame Retardant").
  • the electrical conductor of the cable of the invention may also comprise swelling materials in the presence of moisture to obtain a "sealed core".
  • Medium or high voltage power cable 1 shown in FIG. figure 1 comprises an elongate central conductive element 2, in particular made of copper or aluminum. Successively and coaxially around this conductive element 2, the energy cable 1 further comprises a first semiconductor layer 3 called “internal semiconductor layer”, a second electrically insulating layer 4, a third so-called semiconductor layer 5 "External semiconductor layer”, a metal screen 6 for grounding and / or protection, and an outer protective sheath 7, the layers 3, 4 and 5 being obtainable from a composition according to invention. Layers 3, 4 and 5 are extruded and crosslinked layers.
  • compositions C1 and C3 refer to comparative examples, while compositions C2 and C4 refer to compositions according to the invention.
  • compositions C1 to C4, detailed in Table 1 are expressed in parts by weight (phr) per 100 parts by weight of polymer in the crosslinkable composition.
  • Compositions C1 to C4 are prepared by mixing the polyethylene granules and additives such as peroxide, antioxidants, and optionally the coagent, in a closed jar placed on a roller mixer for 3 hours to thoroughly impregnate the granules. polyethylene.
  • the polyethylene granules were preheated to 60 ° C before impregnation.
  • the MDR rheometer (Moving Die Rheometer, Alpha Technologies) makes it possible to follow the crosslinking / vulcanization of a material by measuring the evolution of its viscosity (DIN 53529 (1983)).
  • the chamber containing the sample consists of two heating trays.
  • the lower plate applies a constant oscillation frequency (100 cycles / min, 1.67Hz) and amplitude ⁇ 0.5 ° arc; the upper plate measures the response of the material, ie its resistance to the stress applied.
  • the unit of measure is that of a pair, expressed in dN.m.
  • the sample is prepared from the impregnated polyethylene granules, molded in a hydraulic press into a plate 3 mm thick at a temperature of 120 ° C., following a cycle of 2 minutes without pressure followed by 3 minutes under a pressure of 100 bars. before being cooled.
  • Two washers 35 mm in diameter to completely fill the chamber are cut in the plate with a punch, then placed between two sheets of terphane polyester ® , to be positioned in the rheometer chamber.
  • the measurement is made at a temperature of 190 ° C., representative of the tube vulcanization conditions. After an initial torque drop due to the prior melting of the material, the viscosity of the material and the resulting torque increase, sign that the crosslinking takes place.
  • a parameter of interest is the MH which corresponds to the maximum measured torque. This is a plateau value, obtained when the entire system has reacted and the maximum accessible crosslinking level is reached. For a given material, there is a good correlation between MH and crosslinking density that govern the thermomechanical properties after the crosslinking step.
  • the Mooney viscometer (Monsanto MV2000) is used to measure the viscosity of a material, or in the case of crosslinkable materials, to monitor its evolution over time (ASTM D1646 (2005)).
  • the chamber consists of two jaws forming a cylindrical cavity in which is placed the sample to be tested.
  • the chamber has in its center a metal disk which is rotated at a constant speed of 2 rpm. In our case, of the two standard rotors available, the "big" is used.
  • the jaws and the chamber are maintained under pressure and at a temperature of 130 ° C.
  • the sample is prepared from the impregnated polyethylene granules, molded in a hydraulic press into a plate 3 mm thick at a temperature of 120 ° C., following a cycle of 2 minutes without pressure followed by 3 minutes under a pressure of 100 bars. before being cooled.
  • the measure is expressed in arbitrary unit, the Mooney (MU).
  • the parameters of interest are: ML, minimum viscosity value, measured at time t0 (min). ML + 1, viscosity value corresponding to ML increased by one Mooney unit. This is measured at time t1 (min). ML + 2, viscosity value corresponding to ML increased by two Mooney units. This is measured at time t2 (min).
  • the determination of the amount of volatiles produced during the crosslinking phase of the polyethylene, then desorbed, is made by the Sievert method, using the PCT Pro 2000 (HY-ENERGY, SETARAM).
  • the sample is prepared from the impregnated polyethylene granules, molded in a hydraulic press into a plate 1 mm thick at a temperature of 120 ° C., following a cycle of 2 minutes without pressure followed by 3 minutes under a pressure of 100 bars. before being cooled.
  • the sample is placed in the chamber of the apparatus, pressurized (helium).
  • This chamber is connected by means of a valve, to a tank of 5ml also under pressure.
  • the pressures in the chamber and in the tank are identical.
  • the valve opens and closes intermittently, allowing a new equilibrium to be established when it is open, then measuring the new pressure in the tank when it is closed.
  • the evolution of the pressure comes partly from the release of the methane, and partly from the dimensional variation of the chamber with the temperature. A real-time reading of the amount of methane released therefore requires a prior calibration by subjecting the chamber to the temperature cycle envisaged.
  • the equipment allows controlled temperature ramps of 1 ° C / s, simulating the crosslinking conditions of the different layers of polyethylene vulcanization tube.
  • the cycle provides heating from room temperature up to 250 ° C.
  • the difference between the final and initial pressure measurements, at the same temperature, makes it possible to access the level of methane released.
  • the amount of volatiles i.e. methane is expressed in ⁇ mol / g of cross-linked polyethylene.
  • 1mm thick plates are molded from the impregnated polyethylene granules.
  • the molding is done in a press at 120 ° C, following a cycle of 2 minutes without pressure and then 3 minutes under 100 bars.
  • the plates are then cooled under a pressure of 100 bar.
  • the crosslinking step is carried out in a press at a temperature of 190 ° C. under 100 bar pressure and lasts 10 minutes.
  • the molds are preheated to 190 ° C.
  • the cooling step is carried out under pressure maintained at 100 bars.
  • the measurement of the hot creep of a material under mechanical stress is determined according to the standard NF EN 60811-2-1.
  • This test is commonly referred to as the Anglemia Hot Set Test (HST) and consists of ballasting one end of a dumbbell type H2 specimen with a mass corresponding to the application of a stress equivalent to 0.2MPa, and to place the whole in an oven heated to 200 +/- 1 ° C for a period of 15 minutes.
  • HST Anglicism Hot Set Test
  • 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.
  • an elongation value will be considered as meeting the requirements if it does not exceed 100%. Beyond this value, in the same way as a break, the test will be considered as non-compliant.
  • the quantity of aliphatic peroxide used in the crosslinkable composition C2 of the invention is much smaller than that used in the crosslinkable composition C1 (1.25 for C2 against 1.42 for C1).
  • the amount of methane released during the crosslinking increases from 113 to 104 ⁇ mol / g of XLPE.
  • tertiobutanol in the composition C2, during the crosslinking.
  • Tertiobutanol like any tertiary alcohol, can of course dehydrate to form isobutene and water.
  • isobutene being significantly less stabilized than the alpha-methyl styrene formed in the context of the dehydration reaction of cumyl alcohol, this reaction is markedly disadvantaged, and the formation of water slowed down.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Claims (13)

  1. Stromkabel (1), das einen elektrischen Leiter (2), eine erste, den elektrischen Leiter (2) umgebende halbleitende Schicht (3), eine zweite elektrisch isolierende, die erste Schicht (3) umgebende Schicht (4) und eine dritte halbleitende, die zweite Schicht (4) umgebende Schicht (5) umfasst, wobei mindestens eine dieser drei Schichten (3, 4, 5) eine vernetzte Schicht ist, die aus einer vernetzbaren Zusammensetzung hergestellt ist, die mindestens ein Polyolefin und ein aliphatisches Peroxyd als Vernetzungsmittel umfasst, dadurch gekennzeichnet, dass die vernetzbare Zusammensetzung ferner eine aromatische Verbindung umfasst, die mindestens einen aromatischen Kern und eine einzige reaktive Funktion umfasst, die imstande ist, sich an das Polyolefin zu pfropfen.
  2. Kabel nach Anspruch 1, dadurch gekennzeichnet, dass die vernetzbare Zusammensetzung ferner mindestens ein Vernetzungs-Coagens umfasst, das mindestens zwei identische oder unterschiedliche reaktive Funktionen aufweist, die imstande sind, sich einerseits an das Polyolefin zu pfropfen und andererseits an der Vernetzung des Polyolefins teilzunehmen.
  3. Kabel nach Anspruch 2, dadurch gekennzeichnet, dass eine dieser zwei reaktiven Funktionen eine Vinylfunktion vom CH2=CH- ist.
  4. Stromkabel (1), das einen elektrischen Leiter (2), eine erste, den elektrischen Leiter (2) umgebende halbleitende Schicht (3), eine zweite elektrisch isolierende, die erste Schicht (3) umgebende Schicht (4) und eine dritte halbleitende, die zweite Schicht (4) umgebende Schicht (5) umfasst, wobei mindestens eine dieser drei Schichten (3, 4, 5) eine vernetzte Schicht ist, die aus einer vernetzbaren Zusammensetzung hergestellt ist, die mindestens ein Polyolefin und ein aliphatisches Peroxyd als Vernetzungsmittel umfasst, dadurch gekennzeichnet, dass die vernetzbare Zusammensetzung ferner ein Vernetzungs-Coagens aufweist, die imstande sind, sich einerseits an das Polyolefin zu pfropfen und andererseits an der Vernetzung des Polyolefins teilzunehmen, wobei eine dieser zwei reaktiven Funktionen eine Vinylfunktion vom CH2=CH- ist.
  5. Kabel nach Anspruch 4, dadurch gekennzeichnet, dass die vernetzbare Zusammensetzung ferner eine aromatische Verbindung umfasst, die mindestens einen aromatischen Kern und eine einzige reaktive Funktion umfasst, die imstande ist, sich an das Polyolefin zu pfropfen.
  6. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das aliphatische Peroxid aus den aliphatischen Peroxycarbonaten, den aliphatischen Peroxyden eines tertiären Dialkyls, die aliphatischen Peroxyacetalen und den aliphatischen Peroxyestern oder einem ihrer Gemische ausgewählt ist.
  7. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Polyolefin ein Ethylenpolymer ist.
  8. Kabel nach Anspruch 7, dadurch gekennzeichnet, dass das Ethylenpolymer ein Polyethylen niederer Dichte (LDPE) ist.
  9. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die vernetzbare Zusammensetzung mehr als 50 Gewichtsteile Polyolefin auf 100 Gewichtsteile Polymer in der Zusammensetzung umfasst.
  10. Kabel nach Anspruch 2, 3 oder 4, dadurch gekennzeichnet, dass die mindestens zwei reaktiven Funktionen des Coagens Vinylfunktionen von Typ CH2=CH- sind.
  11. Kabel nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass die reaktive Funktion der aromatischen Verbindung eine Vinylfunktion ist.
  12. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die vernetzte Schicht die elektrisch isolierende Schicht ist.
  13. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die drei Schichten des Kabels vernetzte Schichten sind.
EP20120158603 2011-03-08 2012-03-08 elektrische Hochspannungs- und mittelspannungskabel Revoked EP2498263B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1151892A FR2972559B1 (fr) 2011-03-08 2011-03-08 Cable electrique a moyenne ou haute tension

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EP2498263A1 EP2498263A1 (de) 2012-09-12
EP2498263B1 true EP2498263B1 (de) 2014-11-19

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EP (1) EP2498263B1 (de)
KR (2) KR20120103498A (de)
CN (1) CN102682904B (de)
AU (1) AU2012201230A1 (de)
ES (1) ES2530362T3 (de)
FR (1) FR2972559B1 (de)

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FR3024797B1 (fr) * 2014-08-07 2016-07-29 Nexans Cable comprenant une couche reticulee
CN107331459A (zh) * 2016-02-25 2017-11-07 杨攀 一种高压同轴电缆
JP6945543B2 (ja) * 2016-03-30 2021-10-06 ダウ グローバル テクノロジーズ エルエルシー メチルラジカル捕捉剤を含む架橋性ポリマー組成物及びそれらから作製された物品
GB2565587A (en) 2017-08-18 2019-02-20 Addivant Switzerland Gmbh Insulation composition

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DE1946927C3 (de) * 1969-09-17 1975-11-20 Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover Hochspannungsfeste, Spannungsstabilisatoren enthaltende Isolierung fur elektrische Kabel
DE3244704C2 (de) * 1982-12-03 1985-01-31 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektrische Isolierung mit Stabilisator
DE3702209A1 (de) * 1987-01-26 1988-08-04 Licentia Gmbh Kunststoffisolierung und verfahren zu ihrer herstellung
JP3175297B2 (ja) 1991-06-24 2001-06-11 日本油脂株式会社 エチレン系ポリマーの架橋用組成物、架橋方法及び電力ケーブル
US5378539A (en) * 1992-03-17 1995-01-03 E. I. Du Pont De Nemours And Company Cross-linked melt processible fire-retardant ethylene polymer compositions
JPH06135927A (ja) * 1992-07-16 1994-05-17 Nippon Oil & Fats Co Ltd ジアルキルペルオキシド、それを用いた組成物、架橋方法及び電力ケーブル
SE9802386D0 (sv) * 1998-07-03 1998-07-03 Borealis As Composition for elektric cables
FR2809226B1 (fr) * 2000-05-19 2002-07-26 Sagem Composition semi-conductrice reticulable et cable electrique a pellicule semi-conductrice
KR100727207B1 (ko) * 2006-02-24 2007-06-13 주식회사 엘지화학 스웨트-아웃 억제 및 전기 절연특성이 우수한 가교 폴리에틸렌 조성물
CN1908048A (zh) * 2006-08-17 2007-02-07 上海交通大学 一种抗水树绝缘材料的制备方法
BRPI0915738B1 (pt) * 2008-07-10 2019-09-24 Borealis Ag Composição de polímero reticulável, artigo compreendendo uma composição de polímero, processo para produzir um cabo e cabo reticulável
CN101445627A (zh) * 2008-12-11 2009-06-03 上海交通大学 高压直流电缆绝缘材料及其制备方法
KR101818792B1 (ko) * 2010-06-18 2018-01-15 유니온 카바이드 케미칼즈 앤드 플라스틱스 테크날러지 엘엘씨 전기 전도성 올레핀 멀티블록 공중합체 조성물

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FR2972559B1 (fr) 2017-11-24
FR2972559A1 (fr) 2012-09-14
KR20180061101A (ko) 2018-06-07
ES2530362T3 (es) 2015-03-02
CN102682904B (zh) 2017-05-17
CN102682904A (zh) 2012-09-19
KR20120103498A (ko) 2012-09-19
EP2498263A1 (de) 2012-09-12
AU2012201230A1 (en) 2012-09-27

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