CN105355308B - Power cable - Google Patents

Power cable Download PDF

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Publication number
CN105355308B
CN105355308B CN201510841687.6A CN201510841687A CN105355308B CN 105355308 B CN105355308 B CN 105355308B CN 201510841687 A CN201510841687 A CN 201510841687A CN 105355308 B CN105355308 B CN 105355308B
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China
Prior art keywords
parts
antioxidant
cable
power cable
magnesium hydroxide
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CN201510841687.6A
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Chinese (zh)
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CN105355308A (en
Inventor
郭毅鹏
付晓
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State Grid Corp of China SGCC
Pingdingshan Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pingdingshan Power Supply Co of State Grid Henan Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Pingdingshan Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510841687.6A priority Critical patent/CN105355308B/en
Publication of CN105355308A publication Critical patent/CN105355308A/en
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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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • 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
    • 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
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • 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

Abstract

The invention belongs to the technical field of cables, and specifically relates to a power cable. The power cable comprises a cable core formed by the twisting of three wire cores, the outside of the cable core is provided with an inner protection layer, an armored layer, a waterproof wrapping tape, and an outer protection layer in sequence, filling materials are arranged between the inner protection layer and the cable core, and each wire core comprises a conductor, a shielding layer, an insulating layer, and a fireproof layer in sequence from the inside to the outside. According to the power cable, the structure is simple, the arrangement of each protection layer is reasonable, the performance of the materials of each protection layer is excellent, environmental protection is realized, pollution is prevented, and the market potential is vast.

Description

A kind of power cable
Technical field
The invention belongs to field of cable technology, and in particular to a kind of power cable.
Background technology
Cable be typically by several or several groups of wire strandings similar rope cable, between every group of wire mutually absolutely Edge, and be often twisted into around a center, whole outside is surrounded by the coating of high-insulation, is erected at aerial more or is mounted in ground Under, it is water-bed, for telecommunication or power Transmission, cable is the guarantee of people's modern life, is risen in transmission of electricity, distribution, conducting process Important effect.
Chinese patent CN10470094A discloses a kind of power cable, including conductor, and the conductor outer wall wraps up interior insulation Layer, also has one layer of external insulation layer composition on the outside of inner insulating layer, and the cable core of the cable is formed by three cores are stranded, outside core One layer of twining package tape is tied with, in twining package tape outer wall one layer of flame retardant coating is wrapped up, packing material is set between flame retardant coating and core, while Inner cushion layer is left outside flame retardant coating, finally there is cable duplex sheath outside inner cushion layer, wherein being divided into internal layer sheath and outer protective sleeve.This Invention reduces cost, strengthens anti-interference, effectively using the wear-resistant degree of cable, convenient practicality after said structure, is enhanced Ground isolation burning things which may cause a fire disaster, fire resistance is high, strengthens safety coefficient.Chinese patent 104637604A discloses a kind of novel flame resistant cable, bag Wire is included, insulating barrier, packing material, lkd layer, pin dress layer, protective case extrudes lapping layer and constitutes cable core outside the wire, described Lkd layer is extruded outside cable core, in the outer lkd layer of the cable core packing material is provided with, extruded outside the lkd layer described in pin dress layer Outer jointing jacket is extruded outside pin dress layer.The patent structure advantages of simple, environmental protection, fire resisting, tear-proof.But, above-mentioned patent is comparing Under conditions of humidity, moisture is easy to penetrate into electricity from the breakage for laying with damaged by mechanical stress or external force in running Cable insulating inner, damages cable, causes huge economic loss.
The content of the invention
To overcome drawbacks described above, it is an object of the invention to provide a kind of power cable, water resistance is good.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of power cable, including the cable core that three cores are twisted into, are sequentially provided with sheath, armouring outside the cable core Layer, block water band and outer jacket, is provided with packing material between the sheath and cable core, described every core from the inside to the outside according to It is secondary including conductor, screen layer, insulating barrier and flame retardant coating.
According to above-mentioned power cable, described packing material is prepared from the following raw materials in parts by weight：Ethylene-propylene-diene monomer Glue-acrylate copolymer 70-90 parts, magnesium hydroxide 15-23 parts, antioxidant 4010NA 5-10 parts, cumyl peroxide 3- 7 parts and glass fibre 12-25 parts.
According to above-mentioned power cable, the preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
According to above-mentioned power cable, described armor is made up of steel band.
According to above-mentioned power cable, described sheath and outer jacket is made up of following parts by weight raw material：Acrylic acid Ester rubber 70-85 parts, polyurethane rubber 10-16 parts, maleic anhydride grafted polyethylene 5-10 parts, plasticizer WB350 5-8 parts, hydrogen Magnesia 10-15 parts, antioxidant 5-10 parts, silane coupler 1-2 parts, carbon black 6-11 parts, accelerant CZ 1-3 parts and oxidation Zinc 5-10 parts.
According to above-mentioned power cable, described antioxidant is antioxidant 1010 and antioxidant 1076, Liang Zhezhi Amount is than being 1:1.
According to above-mentioned power cable, described sheath and the preparation method of outer jacket is comprised the following steps：Will be various Raw material kneads 10-15 min in kneading machine high speed, and the then extrusion molding in twin screw extruder is obtained final product.
The positive beneficial effect of the present invention：
1. power cable packing material of the present invention adopts ethylene propylene diene rubber-acrylate copolymer for base-material, addition resistance Combustion agent magnesium hydroxide and glass fibre, antioxidant 4010NA, vulcanizing agent cumyl peroxide, make packing material fire resistance Good, elasticity is good, and moisture-resistant block-water performance is excellent, has good protection and stabilization to cable core.
2. combine in power cable sheath of the present invention and outer sheath material ACM, polyurethane rubber and The advantage of maleic anhydride grafted polyethylene, makes sheath and outer sheath material have good flexibility, blocks water, corrosion resistance It is excellent, the stability of the construction of cable is maintained well, it is difficult to be corroded by water or other impurities.
3. power cable structure of the present invention is simple, each sheath connection and reasonable arrangement, each jacket material excellent performance, and environmental protection is without dirt Dye, market potential is wide.
Description of the drawings
Fig. 1 is power cable structure schematic diagram of the present invention；
In figure：1- cable cores, 2- conductors, 3- screen layers, 4- insulating barriers, 5- flame retardant coatings, 6- packing materials, 7- sheaths, 8- Armor, 9- blocks water band, 10- outer jackets.
Specific embodiment
With reference to some specific embodiments, the present invention is further described.
Embodiment 1
Referring to Fig. 1, a kind of power cable, including the cable core 1 that three cores are twisted into, interior shield is sequentially provided with outside the cable core Layer 7, armor 8, block water band 9 and outer jacket 10, and packing material 6 is provided between the sheath 7 and cable core 1, and described is every Root core includes successively from the inside to the outside conductor 2, screen layer 3, insulating barrier 4 and flame retardant coating 5.
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 70 12 parts of part, 15 parts of magnesium hydroxide, 5 parts of antioxidant 4010NA, 3 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：70 parts of ACM, polyurethane rubber 10 parts of glue, 5 parts of maleic anhydride grafted polyethylene, 5 parts of plasticizer WB350,10 parts of magnesium hydroxide, 5 parts of antioxidant, silane idol 1 part of agent of connection, 5 parts of 6 parts of carbon black, 1 part of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 2
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 72 15 parts of part, 16 parts of magnesium hydroxide, 6 parts of antioxidant 4010NA, 4 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：73 parts of ACM, polyurethane rubber 11 parts of glue, 6.3 parts of maleic anhydride grafted polyethylene, 5.3 parts of plasticizer WB350,11 parts of magnesium hydroxide, 6 parts of antioxidant, silicon 1.1 parts of alkane coupling agent, 6 parts of 6.6 parts of carbon black, 1.2 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 3
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 75 17 parts of part, 18 parts of magnesium hydroxide, 7 parts of antioxidant 4010NA, 4.2 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：76 parts of ACM, polyurethane rubber 12 parts of glue, 7.2 parts of maleic anhydride grafted polyethylene, 6.1 parts of plasticizer WB350,12 parts of magnesium hydroxide, 7 parts of antioxidant, silicon 1.2 parts of alkane coupling agent, 7 parts of 7 parts of carbon black, 1.8 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 4
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 80 20 parts of part, 20 parts of magnesium hydroxide, 8 parts of antioxidant 4010NA, 5 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：79 parts of ACM, polyurethane rubber 13 parts of glue, 8 parts of maleic anhydride grafted polyethylene, 6.5 parts of plasticizer WB350,13 parts of magnesium hydroxide, 8 parts of antioxidant, silane 1.5 parts of coupling agent, 8 parts of 8 parts of carbon black, 2 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 5
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 81 21 parts of part, 21 parts of magnesium hydroxide, 8 parts of antioxidant 4010NA, 6 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：80 parts of ACM, polyurethane rubber 14.5 parts of glue, 8.1 parts of maleic anhydride grafted polyethylene, 7 parts of plasticizer WB350,13.2 parts of magnesium hydroxide, antioxidant 8.2 Part, 1.6 parts of silane coupler, 8 parts of 9 parts of carbon black, 2.3 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 6
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 85 23.3 parts of part, 22 parts of magnesium hydroxide, 9 parts of antioxidant 4010NA, 6.1 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：81 parts of ACM, polyurethane rubber 15 parts of glue, 8.9 parts of maleic anhydride grafted polyethylene, 7.2 parts of plasticizer WB350,14 parts of magnesium hydroxide, 8 parts of antioxidant, silicon 1.8 parts of alkane coupling agent, 8.3 parts of 8.8 parts of carbon black, 2.5 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 7
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 88 24 parts of part, 20 parts of magnesium hydroxide, 9.5 parts of antioxidant 4010NA, 7 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：82 parts of ACM, polyurethane rubber 15 parts of glue, 9 parts of maleic anhydride grafted polyethylene, 7.5 parts of plasticizer WB350,14.5 parts of magnesium hydroxide, 9 parts of antioxidant, silicon 1.9 parts of alkane coupling agent, 9 parts of 10 parts of carbon black, 2.7 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
Embodiment 8
The present embodiment is identical with the power cable structure of embodiment 1, does not repeat, and somewhat different is：
Described packing material is prepared from the following raw materials in parts by weight：Ethylene propylene diene rubber-acrylate copolymer 90 25 parts of part, 23 parts of magnesium hydroxide, 10 parts of antioxidant 4010NA, 7 parts of cumyl peroxide and glass fibre.
The preparation method of described packing material is comprised the following steps：
Ethylene propylene diene rubber-acrylate copolymer is plasticated 5-10 min in banbury, magnesium hydroxide, anti-is added Old agent 4010NA and glass fibre mixing 10-15 min, is eventually adding cumyl peroxide and continues to knead 5-10 min, then The extrusion molding in extruding machine, as cable filler.
Described armor is made up of steel band.
Described sheath and outer jacket is made up of following parts by weight raw material：85 parts of ACM, polyurethane rubber 16 parts of glue, 10 parts of maleic anhydride grafted polyethylene, 8 parts of plasticizer WB350,15 parts of magnesium hydroxide, 10 parts of antioxidant, silane 2 parts of coupling agent, 10 parts of 11 parts of carbon black, 3 parts of accelerant CZ and zinc oxide.
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
Described sheath and the preparation method of outer jacket is comprised the following steps：Various raw materials are mixed in kneading machine high speed Refining 10-15 min, the then extrusion molding in twin screw extruder is obtained final product.
The packing material and sheath, the performance of outer sheath material of embodiment of the present invention 1-8 gained cable is shown in Tables 1 and 2.
The performance of the packing material of embodiment of the present invention 1-8 of table 1 gained cable
The performance of the packing material of embodiment of the present invention 1-8 of table 1 gained cable
Sheath, the performance of outer sheath material of embodiment of the present invention 1-8 of table 2 gained cable
From upper table 1, power cable packing material fire resistance of the present invention, moisture-resistant block-water performance are excellent；Can by table 2 Know, power cable sheath of the present invention and outer jacket block water, ageing resistace is excellent, long service life.

Claims (3)

1. a kind of power cable, including the cable core that three cores are twisted into, it is characterised in that interior shield is sequentially provided with outside the cable core Layer, armor, block water band and outer jacket, is provided with packing material between the sheath and cable core, described every core by It is interior to outward successively include conductor, screen layer, insulating barrier and flame retardant coating；Described packing material by following parts by weight raw material system Into：Ethylene propylene diene rubber-acrylate copolymer 70-90 parts, magnesium hydroxide 15-23 parts, antioxidant 4010NA 5-10 parts, mistake Oxidation diisopropylbenzene (DIPB) 3-7 parts and glass fibre 12-25 parts；Described sheath and outer jacket are by following parts by weight raw material system Into：ACM 70-85 parts, polyurethane rubber 10-16 parts, maleic anhydride grafted polyethylene 5-10 parts, plasticizer WB350 5-8 parts, magnesium hydroxide 10-15 parts, antioxidant 5-10 parts, silane coupler 1-2 parts, carbon black 6-11 parts, accelerant CZ 1-3 Part and zinc oxide 5-10 parts；
The preparation method of described packing material is comprised the following steps：By ethylene propylene diene rubber-acrylate copolymer in banburying Plasticate 5-10min in machine, adds magnesium hydroxide, antioxidant 4010NA and glass fibre mixing 10-15min, was eventually adding Oxidation diisopropylbenzene (DIPB) continues to knead 5-10min, then the extrusion molding in extruding machine, as cable filler；
Described antioxidant is antioxidant 1010 and antioxidant 1076, and both mass ratioes are 1:1.
2. power cable according to claim 1, it is characterised in that described armor is made up of steel band.
3. power cable according to claim 1, it is characterised in that described sheath and the preparation method bag of outer jacket Include following steps：Various raw materials are kneaded into 10-15min in kneading machine high speed, is then extruded in twin screw extruder Type, obtains final product.
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* Cited by examiner, † Cited by third party
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CN105931712A (en) * 2016-04-22 2016-09-07 安徽瑞莱尔仪表有限公司 Copper alloy cable with great fire resistance
CN108511126A (en) * 2017-07-05 2018-09-07 苏州翠南电子科技有限公司 A kind of anti-corrosion and high strength cable
CN111477385B (en) * 2020-04-17 2021-11-16 湖南三湘电线电缆有限责任公司 Cable with good pressure resistance

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