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WO2018151421A1 - Composition de polymère pour câble haute tension, et câble comprenant une couche d'isolation et une couche de gaine qui sont constituées de celle-ci - Google Patents

Composition de polymère pour câble haute tension, et câble comprenant une couche d'isolation et une couche de gaine qui sont constituées de celle-ci Download PDF

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WO2018151421A1
WO2018151421A1 PCT/KR2018/000587 KR2018000587W WO2018151421A1 WO 2018151421 A1 WO2018151421 A1 WO 2018151421A1 KR 2018000587 W KR2018000587 W KR 2018000587W WO 2018151421 A1 WO2018151421 A1 WO 2018151421A1
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parts
weight
content
polymer composition
resin
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Korean (ko)
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주동욱
김인하
박찬웅
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LS Cable and Systems Ltd
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LS Cable and Systems Ltd
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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
    • H01B3/307—Other macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
    • C08L23/0853—Ethene vinyl acetate copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Ethene-propene or ethene-propene-diene copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • C09K21/04—Inorganic materials containing phosphorus
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients

Definitions

  • the present invention relates to a cable comprising a polymer composition for a high voltage cable and an insulating layer and a sheath layer formed therefrom.
  • the present invention satisfies the high insulation resistance characteristics required for high voltage cables and at the same time has a high degree of flexibility in conflict with the polymer composition and excellent properties such as oil resistance, wear resistance, heat resistance, cold resistance, flame resistance, etc.
  • a cable comprising an formed insulating layer and a sheath layer.
  • High-voltage cable for electric vehicles corresponds to 150 °C class 600V, and there are products of various specifications depending on the cross-sectional area of the conductor.
  • Insulators and sheaths of high-voltage cables for electric vehicles are applied to ethylene vinyl acetate (EVA) resin having high vinyl acetate (VA) content or polyolefin elastomer (POE) having low melting point (Tm).
  • EVA ethylene vinyl acetate
  • POE polyolefin elastomer
  • insulators and sheaths meet the existing international standard ISO 6722-1, but are based on the existing international standard ISO 6722-1 from the European Union of Leading Automobile Manufacturers, the LV 216, especially cables with metal shielding layers. It is difficult to satisfy insulation resistance, oil resistance, etc. required by LV 216-2.
  • the volume resistance of an insulator required by the ISO 6722-1 standard is 10 9 ⁇ ⁇ mm
  • the volume resistance of the insulator required by the LV 216 standard is 10 13 ⁇ ⁇ mm
  • the sheath usually protects the cable from the external environment.
  • priority is given to securing the mechanical properties such as strength and hardness.
  • the sheath also requires insulation performance according to the insulator.
  • insulators and sheaths applied with ethylene vinyl acetate (EVA) resin having a high vinyl acetate (VA) content or polyolefin elastomer (POE) having a low melting point have a volume resistance of the insulator required by the LV 216 standard.
  • EVA ethylene vinyl acetate
  • POE polyolefin elastomer
  • automotive cables should satisfy the oil resistance characteristics for various oils, but when the resin of the polymer composition is changed to ensure insulation resistance and flexibility of the insulator, oil resistance, flame retardancy, etc. are greatly affected, and crosslinking according to the resin Mechanical properties such as abrasion resistance, heat resistance, etc. are greatly influenced by the method and the degree of crosslinking, and it is very difficult for all these properties to meet the LV 216 standard.
  • a polymer composition and an insulating layer formed therefrom that satisfy the high insulation resistance characteristics required by the LV 216 standard and at the same time have a high degree of flexibility and have excellent properties such as oil resistance, abrasion resistance, heat resistance, cold resistance, and flame resistance. And a cable including a sheath layer is urgently needed.
  • an object of the present invention is to provide a cable comprising a polymer composition which satisfies the characteristics such as excellent oil resistance, abrasion resistance, heat resistance, cold resistance, flame resistance, and the like, and an insulating layer and a sheath layer formed therefrom.
  • a polymer composition for a high voltage cable comprising a base resin and an additive, the base resin comprising a polypropylene resin, a polyolefin elastomer, ethylene propylene diene rubber, and ethylene vinyl acetate resin grafted with maleic anhydride,
  • the insulating layer and the sheath layer formed from the polymer composition provide a polymer composition having a volume resistance of more than 10 13 ⁇ ⁇ mm.
  • the content of the polypropylene resin is 15 to 25 parts by weight
  • the content of the polyolefin elastomer is 30 to 50 parts by weight
  • the content of the ethylene propylene diene rubber is 20 to 40 parts by weight based on 100 parts by weight of the base resin.
  • the content of the ethylene vinyl acetate resin grafted with maleic anhydride is 8 to 13 parts by weight, to provide a polymer composition.
  • the content of the polypropylene resin is 17 to 24 parts by weight
  • the content of the polyolefin elastomer is 37 to 45 parts by weight
  • the content of the ethylene propylene diene rubber is 27 to 31 parts by weight
  • the content of the ethylene vinyl acetate resin grafted with maleic anhydride is 9 to 10 parts by weight, to provide a polymer composition.
  • the content of the polypropylene resin is 22 to 32 parts by weight
  • the content of the polyolefin elastomer is 25 to 35 parts by weight
  • the content of the ethylene propylene diene rubber is 27 to 35 parts by weight
  • the content of the ethylene vinyl acetate resin grafted with maleic anhydride is 8 to 13 parts by weight, to provide a polymer composition.
  • the content of the polypropylene resin is 24 to 29 parts by weight
  • the content of the polyolefin elastomer is 29 to 33 parts by weight
  • the content of the ethylene propylene diene rubber is 29 to 33 parts by weight
  • the content of the ethylene vinyl acetate resin grafted with maleic anhydride is 10 to 11 parts by weight, to provide a polymer composition.
  • the polypropylene resin has a melting point (Tm) of 140 to 145 ° C and a specific gravity of 0.860 to 0.880, and the polyolefin elastomer has a melting point (Tm) of 90 to 100 ° C and a specific gravity of 0.890 to 0.910.
  • Tm melting point
  • Tm melting point
  • the ethylene propylene diene rubber has a specific gravity of 0.870 to 0.890 and a Mooney viscosity (ML1 + 4 (125 °C)) is characterized in that 20 to 40, to provide a polymer composition.
  • the additive provides a polymer composition, characterized in that it comprises at least one additive selected from the group consisting of flame retardants, crosslinking aids, antioxidants and lubricants.
  • the flame retardant includes magnesium hydroxide or aluminum hydroxide, and based on 100 parts by weight of the base resin, the content of the flame retardant is 80 to 100 parts by weight, to provide a polymer composition.
  • the content of the flame retardant provides a polymer composition, characterized in that 87 to 95 parts by weight based on 100 parts by weight of the base resin.
  • the crosslinking aid includes a crosslinking multifunctional organic monomer of the base resin, and the content of the crosslinking aid is 2 to 5 parts by weight based on 100 parts by weight of the base resin. .
  • the additive provides a polymer composition, characterized in that it comprises one or more additives selected from the group consisting of flame retardants, flame retardant aids, crosslinking aids, antioxidants and lubricants.
  • the flame retardant includes magnesium hydroxide or aluminum hydroxide
  • the flame retardant aid comprises a flame retardant, based on 100 parts by weight of the base resin, the content of the flame retardant is 95 to 110 parts by weight, the content of the flame retardant aid Silver is 0.6 to 1.2 parts by weight, to provide a polymer composition.
  • the content of the flame retardant is from 100 to 105 parts by weight
  • the content of the flame retardant aid is characterized in that the polymer composition, which provides 0.8 to 1.1 parts by weight.
  • the crosslinking aid includes a crosslinking multifunctional organic monomer of the base resin, and the content of the crosslinking aid is 2 to 5 parts by weight based on 100 parts by weight of the base resin. .
  • conductors An insulating layer surrounding the conductor and formed from the polymer composition of any one of claims 1 to 3; A metal shielding layer surrounding the insulating layer; And a sheath layer surrounding the metal shielding layer and formed from the polymer composition of any one of claims 1, 4 and 5.
  • the polymer composition for a high voltage cable of the present invention has a superior effect of satisfying the high insulation resistance required at the same time as the LV 216 standard by applying a base resin containing a specific resin at a specific compounding ratio, and at the same time having a high flexibility. Indicates.
  • the polymer composition for a high voltage cable of the present invention is applied to the base resin containing a specific resin in a specific compounding ratio, and excellent oil resistance, wear resistance, heat resistance, cold resistance required by the LV 216 standard through the application of a specific flame retardant, crosslinking method, crosslinking agent, etc. It shows an excellent effect of satisfying properties such as and flame retardancy.
  • FIG. 1 schematically shows a cross-sectional structure of one embodiment of a high voltage cable comprising an insulating layer and a sheath layer formed from a polymer composition according to the present invention.
  • FIG. 1 schematically shows a cross-sectional structure of one embodiment of a high voltage cable comprising an insulating layer and a sheath layer formed from a polymer composition according to the present invention.
  • the high voltage cable according to the present invention includes a conductor 10, an insulation layer 20 formed around the conductor 10 and formed from the polymer composition of the present invention, and a metal shield surrounding the insulation layer 20.
  • the layer 30 and the metal shielding layer 40 may include a sheath layer 40 formed from the polymer composition of the present invention.
  • the conductor 10 may apply a copper stranded wire combined with copper fine wires to secure flexibility of the cable, and the metal shielding layer 40 may be made of a metal material such as copper or aluminum to shield electromagnetic waves generated from the cable conductors. Can be done.
  • the polymer composition forming the insulating layer 20 and the sheath layer 40 may include a base resin, a flame retardant, a crosslinking aid, and the like dispersed in the resin, and may further include other additives such as an antioxidant and a lubricant. have.
  • the base resin includes a blending resin of polypropylene (PP) resin, polyolefin elastomer (POE) resin, ethylene propylene diene rubber (EPDM) and ethylene vinyl acetate (EVA) resin grafted with maleic anhydride. can do.
  • PP polypropylene
  • POE polyolefin elastomer
  • EPDM ethylene propylene diene rubber
  • EVA ethylene vinyl acetate
  • the polypropylene (PP) resin has a high melting point (Tm) of its own, excellent insulation resistance properties, oil resistance, and the like, and may include a propylene homopolymer and / or a propylene copolymer, and the propylene homopolymer may have a total monomer weight.
  • the propylene copolymer is propylene and ethylene or ⁇ -olefin having 4 to 12 carbon atoms, for example, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, Comonomers selected from 1-dodecene and combinations thereof, preferably copolymers with ethylene. This is because copolymerization of propylene and ethylene shows hard and flexible properties.
  • the propylene copolymer may include a random propylene copolymer and / or a block propylene copolymer, and the random propylene copolymer refers to a propylene copolymer in which an propylene monomer and another olefin monomer are arbitrarily alternately arranged.
  • the polypropylene (PP) resin may have a melting point (Tm) of 140 to 145 ° C and a specific gravity of 0.860 to 0.880. If the melting point of the polypropylene (PP) resin is less than 140 °C or specific gravity is less than 0.860, the insulation resistance properties of the insulation and sheath composition, mechanical properties such as wear resistance, heat resistance, etc. may be insufficient, while melting point is more than 145 °C or specific gravity If it is greater than 0.880, the flexibility of the insulation and sheath composition may be greatly reduced.
  • Tm melting point
  • the content of the polypropylene (PP) resin may be 15 to 25 parts by weight, preferably 17 to 24 parts by weight based on 100 parts by weight of the base resin.
  • the content of the polypropylene (PP) resin may be 22 to 32 parts by weight, preferably 24 to 29 parts by weight based on 100 parts by weight of the base resin.
  • the insulation resistance characteristics of the insulating layer 20 and the sheath layer 40, mechanical properties such as wear resistance, heat resistance, etc. may be insufficient. If it exceeds the reference content, the flexibility of the insulating layer 20 and the sheath layer 40 may be greatly reduced.
  • the polyolefin elastomer (POE) may further improve insulation resistance, oil resistance, and the like of the polymer composition, and may have a melting point (Tm) of 90 to 100 ° C. and specific gravity of 0.890 to 0.910. If the melting point of the polyolefin elastomer (POE) is less than 90 °C or specific gravity is less than 0.890, the mechanical properties such as insulation resistance characteristics, wear resistance, heat resistance, oil resistance, etc. of the polymer composition may be insufficient, while the melting point is more than 100 °C or specific gravity If it is more than 0.910, the flexibility, cold resistance, etc. of the polymer composition may be greatly reduced.
  • Tm melting point
  • the content of the polyolefin elastomer (POE) may be 30 to 50 parts by weight, preferably 37 to 45 parts by weight based on 100 parts by weight of the base resin, the sheath
  • the content of the polyolefin elastomer (POE) may be 25 to 35 parts by weight, preferably 29 to 33 parts by weight based on 100 parts by weight of the base resin.
  • the insulation resistance characteristics, oil resistance, etc. of the polymer composition may be insufficient, whereas when the polyolefin elastomer (POE) is exceeded, the flexibility, cold resistance, etc. of the polymer composition may be greatly reduced. .
  • the ethylene propylene diene rubber (EPDM) may further improve the flexibility, cold resistance, etc. of the polymer composition, specific gravity may be 0.870 to 0.890, Mooney viscosity (ML1 + 4 (125 ° C)) may be 20 to 40.
  • specific gravity of the ethylene propylene diene rubber (EPDM) is less than 0.870 or the Mooney viscosity (ML1 + 4 (125 ° C.)) is less than 20, the mechanical properties such as insulation resistance, wear resistance, and heat resistance of the polymer composition may be insufficient.
  • the specific gravity is greater than 0.890 or the Mooney viscosity (ML1 + 4 (125 ° C.)) is greater than 40, flexibility, flexibility, and cold resistance of the polymer composition may be insufficient.
  • the content of the ethylene propylene diene rubber may be 20 to 40 parts by weight, preferably 27 to 31 parts by weight based on 100 parts by weight of the base resin.
  • the content of the ethylene propylene diene rubber may be 27 to 35 parts by weight, preferably 29 to 33 parts by weight based on 100 parts by weight of the base resin. .
  • the content of the ethylene propylene diene rubber (EPDM) is lower than the reference content, the flexibility, cold resistance, etc. of the polymer composition may be lowered, whereas when the content of the ethylene propylene diene rubber (EPDM) is lower than the reference content, the mechanical properties such as insulation resistance and wear resistance of the polymer composition, Heat resistance and the like can be greatly reduced.
  • EPDM ethylene propylene diene rubber
  • the maleic anhydride-grafted ethylene vinyl acetate (EVA) resin may increase the compatibility of the base resin and the inorganic flame retardant to improve the flame retardancy and mechanical properties of the polymer composition.
  • the content of the maleic anhydride-grafted ethylene vinyl acetate (EVA) resin is 8 to 13 parts by weight, preferably 9 based on 100 parts by weight of the base resin.
  • the content of the maleic anhydride-grafted ethylene vinyl acetate (EVA) resin may be from about 10 parts by weight to 10 parts by weight, based on 100 parts by weight of the base resin. It may be 10 parts by weight, preferably 10 to 11 parts by weight.
  • the flame resistance, flexibility, and cold resistance of the polymer composition may be lowered, whereas the insulation resistance of the polymer composition that is higher than the reference content is decreased. Properties, mechanical properties such as abrasion resistance, heat resistance, and the like can be greatly reduced.
  • the flame retardant dispersed in the base resin may improve the flame retardancy of the insulating composition, and may include, for example, metal hydroxides such as magnesium hydroxide and aluminum hydroxide, and to improve dispersibility in the base resin. It may be surface-treated with a hydrophobic material such as silane, and the polymer composition forming the sheath layer 40 may further include a flame retardant as a flame retardant aid, the flame retardant in the resin compatible with the base resin Flame retardants can be added in the form of highly dispersed masterbatches.
  • the content of the flame retardant may be 80 to 100 parts by weight, preferably 87 to 95 parts by weight based on 100 parts by weight of the base resin, and the sheath layer 40
  • the content of the flame retardant may be 95 to 110 parts by weight, preferably 100 to 105 parts by weight based on 100 parts by weight of the base resin
  • the content of the flame retardant aid is based on 100 parts by weight of the base resin. 0.6 to 1.2, preferably 0.8 to 1.1 parts by weight.
  • the flame retardancy of the polymer composition may be insufficient, whereas when the content of the flame retardant and the flame retardant aid is exceeded, mechanical properties such as insulation resistance and wear resistance of the polymer composition may be greatly reduced. have.
  • the crosslinking aid may be added for irradiation crosslinking of the base resin, and may include, for example, a polyfunctional organic monomer.
  • the content of the crosslinking aid may be It may be 2 to 5 parts by weight, preferably 3 to 5 parts by weight based on 100 parts by weight of the base resin, and in the case of the polymer composition forming the sheath layer 40, the amount of the crosslinking aid is based on 100 parts by weight of the base resin. 2 to 5, preferably 3 to 4 parts by weight.
  • the crosslinking degree of the base resin may significantly lower the insulation resistance characteristics, mechanical properties such as wear resistance, heat resistance, etc., of the base resin, but exceeds the reference content. In the case of flexibility, cold resistance, etc. of the polymer composition may be lowered.
  • an antioxidant may be further added to ensure long-term heat resistance of the polymer composition, and the lubricant may be further added to improve compatibility of the base resin with other additives.
  • Prescription 1 Prescription 2 Prescription 3
  • Prescription 4 Prescription 5
  • Prescription 6 Prescription 7
  • Prescription 8 Prescription 9
  • Prescription 10 Resin 1 23 18 19 23 40 28 27 25 26 20 Resin 2 38 44 26 38 20 30 32 32 30 25 Resin 3 30 28 35 35 31 31 32 33 45 Resin 4 9 10 20 9 5 11 10 11 11 10 Resin 5 30
  • Flame retardant 1 90 90 90 90 105 100 120 110 Flame Retardant 2 0.8 1.0 1.1 0.9 Crosslinking aid 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
  • Resin 1 Polypropylene (melting point: 141 ° C; specific gravity: 0.870)
  • Resin 2 polyolefin elastomer (melting point: 97 ° C; specific gravity: 0.902)
  • Resin 3 Ethylene propylene diene rubber (specific gravity: 0.880; Mooney viscosity (ML1 + 4 (125 ° C)): 21 ⁇ 29)
  • Resin 4 Ethylene vinyl acetate grafted with maleic anhydride
  • Resin 5 Ethylene vinyl acetate (melting point: 62 ° C; vinyl acetate content: 33 wt%)
  • -Flame retardant 1 Magnesium hydroxide coated with vinyl silane (BET specific surface area: 4.0 ⁇ 6.0 m2 / g)
  • TMPTMA trimethylolpropane trimethacrylate
  • the cable specimens of each of Examples and Comparative Examples were soaked in a beaker containing gasoline for 20 hours at room temperature, and then taken out, and the cable outer diameter was measured after 30 minutes. If the outer diameter after immersion exceeds 15% of the increased diameter compared to the outer diameter before immersion, it is less than the standard.
  • Insulation resistance was measured for each of the cable specimens of Examples and Comparative Examples according to the LV 216 standard. Insulation resistance measurement method was applied according to ISO 6722-1, but with 70% 1% saline instead of 70 °C water, and the insulation resistance between the sheath layer and the metal shielding layer was measured when evaluating the insulation resistance. The measured insulation resistance should exceed 10 13 ⁇ ⁇ mm.
  • Tensile strength at the time of 2% elongation was measured for each of the insulated specimens of the Examples and Comparative Examples using a UTM facility.
  • the level of flexibility is determined by comparing the tensile strength value at the time of 2% elongation of the prescription meeting the existing ISO standard.
  • each cable specimen according to the example and the comparative example was suspended according to the conductor size according to the conductor size, stayed for 4 hours in the oven at -40 °C, and wound around the rod of the specified standard to see if cracks occurred. Check it. If no cracking occurs, no breakdown shall occur during the application of a voltage of 1 kV in water for one minute.
  • a 0.45 mm diameter needle was reciprocated perpendicularly to the specimen with 7 N load applied to each of the cable specimens of Examples and Comparative Examples. If the sheath layer wears and the needle contacts the shielding layer, the evaluation is complete and the round trip frequency should be 1,500 or more.
  • each cable specimen and burner fix each cable specimen and burner at 45 ° angle from the ground, and arrange the specimen and burner to be perpendicular to each other. It must be digested within.
  • the cable specimen of Comparative Example 1 did not satisfy the flame retardancy because the sheath layer was formed from the polymer composition of Formulation 1 containing no flame retardant aid, the cable specimen of Comparative Example 2 is an insulating layer and sheath
  • the layers were formed from the polymer compositions of Formulations 6 and 5, each containing an excessive amount of polypropylene resin, resulting in poor heat resistance due to unstable properties after crosslinking due to the properties of the polypropylene, and deteriorated flexibility, and the cable specimen of Comparative Example 3 was a sheath layer.
  • the cable specimens of Examples 1 to 3 of the present invention satisfy all of the high insulation resistance properties and the flexibility in conflict with the standard required by the LV 216 standard. It was also confirmed that the physical properties were excellent.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Insulated Conductors (AREA)

Abstract

La présente invention concerne une composition de polymère pour un câble haute tension, et un câble comprenant une couche d'isolation et une couche de gaine qui sont constituées de la composition. En particulier, la présente invention concerne une composition de polymère qui satisfait des caractéristiques de résistance d'isolation élevée requises pour un câble haute tension et qui satisfait simultanément un niveau élevé de flexibilité dans une relation de compromis avec celle-ci, et qui présente d'excellentes propriétés telles qu'une résistance à l'huile, une résistance à l'usure, une résistance à la chaleur, une résistance au froid et une résistance à la flamme. La présente invention concerne également un câble comprenant une couche d'isolation et une couche de gaine qui sont constituées de la composition de polymère.
PCT/KR2018/000587 2017-02-20 2018-01-12 Composition de polymère pour câble haute tension, et câble comprenant une couche d'isolation et une couche de gaine qui sont constituées de celle-ci Ceased WO2018151421A1 (fr)

Applications Claiming Priority (2)

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KR1020170022515A KR20180096174A (ko) 2017-02-20 2017-02-20 고전압 케이블용 고분자 조성물 및 이로부터 형성된 절연층 및 시스층을 포함하는 케이블
KR10-2017-0022515 2017-02-20

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WO2018151421A1 true WO2018151421A1 (fr) 2018-08-23

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CN109438820A (zh) * 2018-09-27 2019-03-08 中广核高新核材科技（苏州）有限公司 长寿命辐照交联低烟无卤阻燃聚烯烃电缆料及其制备方法
CN110204825A (zh) * 2019-04-17 2019-09-06 深圳市深捷通管业发展有限公司 一种阻燃电缆管及其制备方法
CN119889790A (zh) * 2025-01-03 2025-04-25 远东电缆有限公司 一种高耐寒控制系统用特种电缆及其加工工艺

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JP2016121203A (ja) * 2014-12-24 2016-07-07 古河電気工業株式会社 耐熱性シラン架橋樹脂成形体、架橋性樹脂成形体、耐熱性シラン架橋性樹脂組成物及びそれらの製造方法、シランマスターバッチ、並びに耐熱性製品
KR20160121873A (ko) * 2015-04-13 2016-10-21 엘에스전선 주식회사 전력 케이블

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109438820A (zh) * 2018-09-27 2019-03-08 中广核高新核材科技（苏州）有限公司 长寿命辐照交联低烟无卤阻燃聚烯烃电缆料及其制备方法
CN110204825A (zh) * 2019-04-17 2019-09-06 深圳市深捷通管业发展有限公司 一种阻燃电缆管及其制备方法
CN119889790A (zh) * 2025-01-03 2025-04-25 远东电缆有限公司 一种高耐寒控制系统用特种电缆及其加工工艺

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