CN113327709B - Marine fireproof and corrosion-resistant cable - Google Patents
Marine fireproof and corrosion-resistant cable Download PDFInfo
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- CN113327709B CN113327709B CN202110414743.3A CN202110414743A CN113327709B CN 113327709 B CN113327709 B CN 113327709B CN 202110414743 A CN202110414743 A CN 202110414743A CN 113327709 B CN113327709 B CN 113327709B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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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
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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
- H01B7/2806—Protection against damage caused by corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
Abstract
The invention discloses a fireproof and corrosion-resistant cable for a ship, which sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside, wherein the first protective layer comprises: aluminum hydroxide, calcium hydroxide, silicon dioxide; the second protective layer includes: ammonium chloride, aluminate and aluminum powder; the sheath comprises the following raw materials in parts by weight: 40-53 parts of polyvinyl chloride, 6620-30 parts of nylon, 6-12 parts of diethylene glycol dibenzoate, 20-30 parts of nitrile rubber, 1-2 parts of montmorillonite, 6-8 parts of hydroxymethyl cellulose, 2-3 parts of zinc oxide, 2-3 parts of white carbon black, 1-2 parts of an accelerator TMTD, 1-3 parts of sodium tetraborate, 2-5 parts of polyaluminium chloride and 2-5 parts of glycerol. The invention provides a marine power cable with corrosion resistance and fire resistance, wherein the insulation resistance constants of the cables 84d and 100d are not less than 3670M omega-Km, and the insulation resistance constant of the cable under the condition of salt water corrosion 100d reaches 4560-6150M omega-Km. The cable can be maintained in normal power supply for at least 210min when being subjected to a flame at 830 ℃.
Description
Technical Field
The invention belongs to the technical field of cables, and particularly relates to a fireproof and corrosion-resistant cable for a ship.
Background
With the development of the marine industry, the marine cable is separated from a common cable and becomes a special cable type. The marine cable is mainly used for power supply, control and communication of ships, and generally has the advantages of water resistance, corrosion resistance, fire resistance, flexibility, easiness in bending and the like. The main improvement of the current marine power cable is the structure of the cable, and certain properties of the cable are less improved by improving the formula of the cable coating protective material, which reflects that the improvement has greater difficulty.
CN200910222262.1 discloses a copper-core silicon rubber insulation fire-resistant polyolefin sheath halogen-free low-smoke flame-retardant power cable, which comprises at least one conductor (1), an insulation layer (2), a filling layer (3), a cabling wrapping (4) and a fire-resistant sheath (5) from inside to outside respectively; the insulating layer (2) is tightly attached to the outer side of each conductor (1) to coat the conductors (1), and the cable wrapping (4) coats the conductors (1) and the insulating layer (2); a filling layer (3) is arranged at a gap part between the cabling wrapping (4) and the insulating layer (2); a fireproof sheath (5) is coated outside the cable wrapping (4). The designed fire-resistant power cable with the halogen-free low-smoke fire-retardant fire-resistant structure completely meets the fire-retardant fire-resistant requirement through test, has simple product process, saves a fire-resistant mica tape and a reinforcing layer compared with the existing cable for fire-resistant fixed wiring, reduces production procedures and greatly improves the production efficiency. The scheme is mainly structural improvement, does not consider the special condition that the marine cable is easy to corrode by salt water, and does not solve the problem that the cable is easy to corrode. CN201310608067.9 discloses a fire-resistant power cable for large-scale ocean vessel, its scheme is including the insulating core that the parcel has insulating shielding layer and copper wire woven shield, and many insulating cores constitute the cable core, and the cable core is inside to be filled with fire-retardant cooling material filling layer, and the cable core wraps up in proper order and has separated oxygen cooling inner sheath layer, thermal-insulated around covering, fire-blocking layer and fire-retardant oversheath layer. The problem that an air gap is easily formed between a conductor and an insulating layer to cause that the insulating layer cannot achieve a fire-resistant effect can be solved, the insulating layer of the insulating wire core is guaranteed not to be softened, and the fireproof cable core has good fire resistance. This solution, although it solves the problem of fire resistance, does not solve the problem of susceptibility of marine cables to salt water corrosion. Therefore, it is necessary to provide a marine power cable having both high fire resistance and high corrosion resistance.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to solve the problems and provides a fireproof and corrosion-resistant cable for a ship.
The scheme of the invention comprises the following contents:
the utility model provides a marine fire prevention, corrosion-resistant cable, from interior to exterior includes conductor, insulating layer, metal covering, isolation layer, first protective layer, second protective layer and sheath according to the preface, first protective layer includes: aluminum hydroxide, calcium hydroxide, silicon dioxide; the second protective layer includes: ammonium chloride, aluminate, aluminum powder; the sheath comprises the following raw materials in parts by weight: 40-53 parts of polyvinyl chloride, 6620-30 parts of nylon, 6-12 parts of diethylene glycol dibenzoate, 20-30 parts of nitrile rubber, 1-2 parts of montmorillonite, 6-8 parts of hydroxymethyl cellulose, 2-3 parts of zinc oxide, 2-3 parts of white carbon black, 1-2 parts of an accelerator TMTD, 1-3 parts of sodium tetraborate, 2-5 parts of polyaluminium chloride and 2-5 parts of glycerol. The first protective layer and the second protective layer are used, the fire resistance and flame retardance of the cable are improved, the corrosion resistance is effectively improved through the sheath raw material formula, and the fireproof and corrosion resistant effects of the marine cable are achieved.
Preferably, the first protective layer comprises the following raw materials in parts by weight: 5-8 parts of aluminum hydroxide, 2-3 parts of calcium hydroxide and 2-3 parts of silicon dioxide.
Preferably, the second protective layer comprises the following raw materials in parts by weight: 1-2 parts of ammonium chloride, 5-7 parts of aluminate and 1-6 parts of aluminum powder.
Preferably, the first protective layer comprises the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 2 parts of silicon dioxide.
Preferably, the second protective layer comprises the following raw materials in parts by weight: 1 part of ammonium chloride, 6 parts of aluminate and 3 parts of aluminum powder.
Preferably, the sheath comprises the following raw materials in parts by weight: 50-53 parts of polyvinyl chloride, 6623-30 parts of nylon, 7-10 parts of diethylene glycol dibenzoate, 20-30 parts of nitrile rubber, 1-2 parts of montmorillonite, 6-8 parts of hydroxymethyl cellulose, 2-3 parts of zinc oxide, 2-3 parts of white carbon black, 1-2 parts of an accelerator TMTD, 1-3 parts of sodium tetraborate, 2-3 parts of polyaluminum chloride and 2-5 parts of glycerol.
Preferably, the inner surface of the sheath is coated with: poly (methyl acrylate). The second protective layer can be used as a reaction auxiliary agent of the first protective layer and the polymethyl acrylate under the heated condition. The reaction product of the first protective agent and the polymethyl acrylate forms a new protective layer, and further has the effects of fire prevention and flame retardance.
Preferably, the thickness of the polymethyl acrylate is 1-2 mm.
Preferably, the diameter of the conductor is 1.5-1.6 mm, the thickness of the insulating layer is 2-4 mm, the thickness of the metal sleeve is 2-4 mm, the thickness of the isolating layer is 3-6 mm, the thickness of the first protective layer is 3-5 mm, the thickness of the second protective layer is 1.5-2.5 mm, and the thickness of the sheath is 3-5 mm.
Preferably, the preparation step of the sheath comprises: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
The invention has the following beneficial effects:
the invention provides a marine power cable with corrosion resistance and fire resistance, wherein the insulation resistance constants of the cables 84d and 100d are not less than 3670M omega-Km, and the insulation resistance constant of the cable under the condition of salt water corrosion 100d reaches 4560-6150M omega-Km. The cable can be normally powered for at least 210min when being subjected to a flame at 830 ℃.
The invention provides a marine power cable with rated voltage of 1KV, and all indexes of the marine power cable accord with the industrial standard.
The scheme of the invention has simple and convenient operation and low cost, and is beneficial to industrialization.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The first protective layer and the second protective layer can be filled between the sheath and the isolation layer in a powder state, and can also be coated between the sheath and the isolation layer in an extrusion forming manner. The following examples employ powder loading.
Example 1
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 8 parts of aluminum hydroxide, 1 part of calcium hydroxide and 1 part of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 2 parts of ammonium chloride, 1 part of aluminate and 7 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 51 parts of polyvinyl chloride, 6620 parts of nylon, 12 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 2 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Example 2
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 3 ~ 4mm, the thickness of metal covering is 3 ~ 4mm, the thickness of isolation layer is 5 ~ 6mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 2.0 ~ 2.5mm, the thickness of sheath is 4 ~ 5 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 5 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 3 parts of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 2 parts of ammonium chloride, 7 parts of aluminate and 1 part of aluminum powder;
the sheath comprises the following raw materials in parts by weight: 51 parts of polyvinyl chloride, 6620 parts of nylon, 12 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 2 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Example 3
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 2 parts of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 1 part of ammonium chloride, 6 parts of aluminate and 3 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 51 parts of polyvinyl chloride, 6620 parts of nylon, 12 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 2 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Example 4
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 2 parts of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 1 part of ammonium chloride, 6 parts of aluminate and 3 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 40 parts of polyvinyl chloride, 6623 parts of nylon, 6 parts of diethylene glycol dibenzoate, 30 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 3 parts of sodium tetraborate, 5 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Example 5
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 2 parts of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 1 part of ammonium chloride, 6 parts of aluminate and 3 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 50 parts of polyvinyl chloride, 6630 part of nylon, 10 parts of diethylene glycol dibenzoate, 22 parts of nitrile rubber, 1 part of montmorillonite, 6 parts of hydroxymethyl cellulose, 2 parts of zinc oxide, 2 parts of white carbon black, 1 part of an accelerator TMTD, 1 part of sodium tetraborate, 3 parts of polyaluminum chloride and 2 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Example 6
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The jacket was not coated with polymethyl acrylate.
The first protective layer comprises the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 2 parts of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 1 part of ammonium chloride, 6 parts of aluminate and 3 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 50 parts of polyvinyl chloride, 6630 part of nylon, 10 parts of diethylene glycol dibenzoate, 22 parts of nitrile rubber, 1 part of montmorillonite, 6 parts of hydroxymethyl cellulose, 2 parts of zinc oxide, 2 parts of white carbon black, 1 part of an accelerator TMTD, 1 part of sodium tetraborate, 3 parts of polyaluminium chloride and 2 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Comparative example 1
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 8 parts of aluminum hydroxide, 1 part of calcium hydroxide and 1 part of silicon dioxide; no second protective layer;
the sheath comprises the following raw materials in parts by weight: 51 parts of polyvinyl chloride, 6620 parts of nylon, 12 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 2 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Comparative example 2
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
No first protective layer;
the second protective layer comprises the following raw materials in parts by weight: 2 parts of ammonium chloride, 1 part of aluminate and 7 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 51 parts of polyvinyl chloride, 6620 parts of nylon, 12 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 2 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, feeding the mixture into an extruder, and performing extrusion molding at 150-160 ℃.
Comparative example 3
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 8 parts of aluminum hydroxide, 1 part of calcium carbonate and 1 part of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 2 parts of sodium chloride, 1 part of methyl acrylate and 7 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 51 parts of polyvinyl chloride, 6620 parts of nylon, 12 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 2 parts of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Comparative example 4
The marine fireproof and corrosion-resistant cable sequentially comprises a conductor, an insulating layer, a metal sleeve, an isolating layer, a first protective layer, a second protective layer and a sheath from inside to outside. The conductor is a copper conductor; the insulating layer is mica; the metal sleeve is an aluminum metal sleeve; the isolation layer is a crosslinked polyethylene isolation layer; the diameter of conductor 1.5 ~ 1.6mm, the thickness of insulating layer is 2 ~ 3mm, the thickness of metal covering is 2 ~ 3mm, the thickness of isolation layer is 3 ~ 4mm, the thickness of first protective layer is 3 ~ 5mm, the thickness of second protective layer is 1.5 ~ 2.0mm, the thickness of sheath is 3 ~ 4 mm. The inner surface of the sheath is coated with polymethyl acrylate with the thickness of 1-2 mm.
The first protective layer comprises the following raw materials in parts by weight: 8 parts of aluminum hydroxide, 1 part of calcium hydroxide and 1 part of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 2 parts of ammonium chloride, 1 part of aluminate and 7 parts of aluminum powder.
The sheath comprises the following raw materials in parts by weight: 46.8 parts of polyvinyl chloride, 6620 parts of nylon, 18 parts of diethylene glycol dibenzoate, 20 parts of nitrile rubber, 2 parts of montmorillonite, 8 parts of hydroxymethyl cellulose, 3 parts of zinc oxide, 3 parts of white carbon black, 2 parts of an accelerator TMTD, 2 parts of sodium tetraborate, 0.2 part of polyaluminium chloride and 5 parts of glycerol. The preparation steps of the sheath comprise: mixing the raw materials, feeding the mixture into an extruder, and performing extrusion molding at 150-160 ℃.
Test example:
the invention provides a ship power cable with rated voltage of 1KV, and the results of additional aging tests, 4h high-voltage tests, thermal extension tests and other types of tests on finished cables show that all indexes meet the industrial standard. Compared with the conventional finished product power cable, the power cable provided by the invention has excellent salt water corrosion resistance and fire resistance.
Brine corrosion resistance test: and (3) soaking the finished cable in a sodium chloride solution with the mass concentration of 20% at 25 ℃ for 84d and 100 d. The insulation resistance test method is in accordance with IEC 60092-350 standard.
The fire resistance test (circuit integrity) of the finished cable is referred to the IEC60331 standard.
TABLE 1
The results show that: in the embodiment, the insulation resistance constants of the cables 84d and 100d are not less than 3670M omega & Km, and the insulation resistance constant of the cable 100d subjected to salt water corrosion reaches 4560-6150M omega & Km. The cable can be normally powered for at least 210min when being subjected to a flame at 830 ℃. The marine power cable has the advantages of corrosion resistance and fire resistance. The comparative examples 5 and 6 find that the sheath coated with polymethyl acrylate has a remarkable effect on improving the fire resistance of the cable, and the comparative examples 5 and 1 find that the raw material ratio of the first protective layer, the second protective layer and the sheath also has a certain influence on the fire resistance of the cable. Comparing example 1 with comparative examples 1-4, it was found that whether the first protective layer, the second protective layer, and the change in the formulation of the protective layer and the sheath raw material have a significant effect on the corrosion resistance and fire resistance of the cable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a marine fire prevention, corrosion-resistant cable, from interior to exterior includes conductor, insulating layer, metal covering, isolation layer, first protective layer, second protective layer and sheath according to the preface, its characterized in that:
the first protective layer comprises the following raw materials in parts by weight: 5-8 parts of aluminum hydroxide, 2-3 parts of calcium hydroxide and 2-3 parts of silicon dioxide;
the second protective layer comprises the following raw materials in parts by weight: 1-2 parts of ammonium chloride, 5-7 parts of aluminate and 1-6 parts of aluminum powder;
the sheath comprises the following raw materials in parts by weight: 40-53 parts of polyvinyl chloride, 6620-30 parts of nylon, 6-12 parts of diethylene glycol dibenzoate, 20-30 parts of nitrile rubber, 1-2 parts of montmorillonite, 6-8 parts of hydroxymethyl cellulose, 2-3 parts of zinc oxide, 2-3 parts of white carbon black, 1-2 parts of an accelerator TMTD, 1-3 parts of sodium tetraborate, 2-5 parts of polyaluminium chloride and 2-5 parts of glycerol;
the inner surface of the sheath is coated with polymethyl acrylate.
2. The marine fire-resistant, corrosion-resistant cable according to claim 1, wherein the first protective layer comprises the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 2 parts of calcium hydroxide and 2 parts of silicon dioxide.
3. The marine fire-resistant, corrosion-resistant cable according to claim 1, wherein the second protective layer comprises the following raw materials in parts by weight: 1 part of ammonium chloride, 6 parts of aluminate and 3 parts of aluminum powder.
4. The marine fire-resistant and corrosion-resistant cable according to claim 1, wherein the sheath comprises the following raw materials in parts by weight: 50-53 parts of polyvinyl chloride, 6623-30 parts of nylon, 7-10 parts of diethylene glycol dibenzoate, 20-30 parts of nitrile rubber, 1-2 parts of montmorillonite, 6-8 parts of hydroxymethyl cellulose, 2-3 parts of zinc oxide, 2-3 parts of white carbon black, 1-2 parts of an accelerator TMTD, 1-3 parts of sodium tetraborate, 2-3 parts of polyaluminium chloride and 2-5 parts of glycerol.
5. The marine fire-resistant, corrosion-resistant cable according to claim 1, wherein the polymethyl acrylate is coated to a thickness of 1 to 2 mm.
6. The marine fire-resistant and corrosion-resistant cable according to claim 1, wherein the diameter of the conductor is 1.5-1.6 mm, the thickness of the insulating layer is 2-4 mm, the thickness of the metal sheath is 2-4 mm, the thickness of the isolation layer is 3-6 mm, the thickness of the first protective layer is 3-5 mm, the thickness of the second protective layer is 1.5-2.5 mm, and the thickness of the sheath is 3-5 mm.
7. The marine fire-resistant, corrosion-resistant cable of claim 1, wherein the sheath is prepared by: mixing the raw materials, sending the mixture to an extruder, and performing extrusion molding at 150-160 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110414743.3A CN113327709B (en) | 2021-04-17 | 2021-04-17 | Marine fireproof and corrosion-resistant cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110414743.3A CN113327709B (en) | 2021-04-17 | 2021-04-17 | Marine fireproof and corrosion-resistant cable |
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| CN113327709A CN113327709A (en) | 2021-08-31 |
| CN113327709B true CN113327709B (en) | 2022-06-17 |
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| CN202110414743.3A Active CN113327709B (en) | 2021-04-17 | 2021-04-17 | Marine fireproof and corrosion-resistant cable |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928158A (en) * | 2014-04-26 | 2014-07-16 | 芜湖航天特种电缆厂 | Anti-flaming fireproof cable for electric welding machine |
| CN104629103A (en) * | 2015-01-15 | 2015-05-20 | 无为县茂林电缆材料有限公司 | Nano-material-modified natural rubber cable material |
| WO2018040548A1 (en) * | 2016-08-30 | 2018-03-08 | 中天科技装备电缆有限公司 | Silicone rubber cable for rail transit and intelligent preparation method therefor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4473094B2 (en) * | 2004-02-20 | 2010-06-02 | リケンテクノス株式会社 | Thermoplastic elastomer composition and thermoplastic resin composition using the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928158A (en) * | 2014-04-26 | 2014-07-16 | 芜湖航天特种电缆厂 | Anti-flaming fireproof cable for electric welding machine |
| CN104629103A (en) * | 2015-01-15 | 2015-05-20 | 无为县茂林电缆材料有限公司 | Nano-material-modified natural rubber cable material |
| WO2018040548A1 (en) * | 2016-08-30 | 2018-03-08 | 中天科技装备电缆有限公司 | Silicone rubber cable for rail transit and intelligent preparation method therefor |
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