CN114822961B - Tensile high-flame-retardance cable - Google Patents
Tensile high-flame-retardance cable Download PDFInfo
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- CN114822961B CN114822961B CN202210590321.6A CN202210590321A CN114822961B CN 114822961 B CN114822961 B CN 114822961B CN 202210590321 A CN202210590321 A CN 202210590321A CN 114822961 B CN114822961 B CN 114822961B
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- H—ELECTRICITY
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- 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
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- 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
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
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- C08L23/286—Chlorinated polyethylene
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
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- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/30—Drying; Impregnating
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- 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
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
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- 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
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- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
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- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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Abstract
The invention relates to the technical field of wires and cables, in particular to a tensile high-flame-retardance cable which comprises an outer sheath, a steel wire armor layer, a crosslinked polyethylene insulating layer, a flame-retardance sheath layer, a tensile core and a cable core; the tensile core is a gum dipping aramid fiber bundle; the cable core and the gum dipping aramid fiber bundle are fixed by wrapping with the mica tape, and the tensile high-flame-retardant cable has excellent tensile flame-retardant performance and can meet the use requirements of general scenes.
Description
Technical Field
The invention relates to the technical field of wires and cables, in particular to a tensile high-flame-retardance cable.
Background
The tensile cable is widely used for electric energy transmission of equipment such as winding drums, conveyors, lifting electromagnets, electric flat cars, various cranes, large-scale reclaimers and the like. However, because the tensile cable needs to withstand the actions of tension, torsion, friction and the like, the traditional tensile cable refers to the structure of a universal rubber sleeve cable, the tensile requirement is met by adding a galvanized steel wire tensile core, and the galvanized steel wire tensile core can meet the tensile requirement of the tensile cable to a certain extent, but the weight of the cable is increased, and the flexibility of the cable is reduced so as to be unfavorable for transportation.
Disclosure of Invention
The invention aims to: aiming at the technical problems, the invention provides a tensile high-flame-retardance cable.
The technical scheme adopted is as follows:
a tensile high-flame-retardance cable comprises an outer sheath, a steel wire armor layer, a crosslinked polyethylene insulating layer, a flame-retardance sheath layer, a tensile core and a cable core;
the tensile core is a gum dipping aramid fiber bundle;
the cable core and the gum dipping aramid fiber bundles are fixed by wrapping with mica tapes;
the preparation method of the gum dipping aramid fiber bundle comprises the following steps:
uniformly mixing epoxy linseed oil, phenol and p-toluenesulfonic acid, heating to 110-130 ℃ for reaction for 3-5h, cooling to room temperature to obtain a modifier, adding resorcinol and the modifier into water, stirring for 20-40min, dropwise adding a sodium hydroxide solution into the solution, stirring uniformly, adding a formaldehyde solution, fully uniformly mixing, reacting at 23-28 ℃ for 6-8h, recovering the room temperature, adding butadiene-pyridine latex and styrene-butadiene latex, stirring at high speed for 30-50min to obtain a dipping solution, immersing aramid fibers into 5-10s, taking out, drying, and collecting into bundles.
Further, the mass ratio of the epoxy linseed oil to the phenol to the p-toluene sulfonic acid is 500:300:1.
further, the mass ratio of the resorcinol to the modifier is 10-20:1.
further, the outer sheath comprises the following components in parts by weight:
60-80 parts of chlorinated polyethylene, 30-40 parts of neoprene, 10-20 parts of styrene-isoprene block copolymer rubber, 5-10 parts of C5 petroleum resin, 0.01-0.05 part of dicumyl peroxide, 1-2 parts of triallyl isocyanurate, 0.5-1 part of antioxidant RD, 5-10 parts of magnesium oxide, 5-10 parts of zinc oxide, 10-20 parts of white carbon black and 30-40 parts of carbon black.
Further, the flame-retardant sheath layer comprises the following components in parts by weight:
60-80 parts of chlorinated polyethylene, 30-40 parts of neoprene, 10-20 parts of styrene-isoprene block copolymer rubber, 5-10 parts of C5 petroleum resin, 0.01-0.05 part of dicumyl peroxide, 1-2 parts of triallyl isocyanurate, 0.5-1 part of antioxidant RD, 5-10 parts of magnesium oxide, 5-10 parts of zinc oxide, 10-20 parts of white carbon black, 30-40 parts of carbon black and 1-1.5 parts of flame retardant.
Further, the flame retardant comprises tris (2-chloropropyl) phosphate and long-chain alkyl acid salt modified zinc borate.
Further, the mass ratio of the tri (2-chloropropyl) phosphate to the long-chain alkyl acid salt modified zinc borate is 1-5:1-5.
Further, the preparation method of the long-chain alkyl acid salt modified zinc borate comprises the following steps:
mixing zinc sulfate, borax and boric acid uniformly, placing into a mortar, adding long-chain alkyl acid salt, grinding for 20-40min, performing microwave irradiation for 10-15min, taking out, cooling, washing with water until no sulfate ion exists, and drying.
Further, the long-chain alkyl acid salt is sodium salt of alkyl acid with 10-16 carbon atoms, and at least one hydrogen atom in the sodium salt of the alkyl acid with 10-16 carbon atoms is substituted or unsubstituted by fluorine.
Further, the long-chain alkyl acid salt is sodium perfluorododecanoate.
The invention has the beneficial effects that:
the invention provides a tensile high-flame-retardant cable, which adopts a steel wire armor layer and a tensile core to be compounded to improve the tensile property and flexibility of the cable, adopts a gummed aramid fiber bundle as the tensile core, reduces the overall weight of the cable, ensures the flexibility of the cable, can improve the binding force of the aramid fiber and the cable core through gumming treatment, is convenient for fixing a mica tape, and has a certain reinforcing effect by coating colloid on the surface of the aramid fiber, thus increasing the tensile property and the flexural resistance of the cable in a special environment.
Drawings
FIG. 1 is a schematic diagram of the structure of the pull-up resistant flame retardant cable of the present invention;
the reference numerals in the figures represent:
1-outer sheath, 2-steel wire armor layer, 3-crosslinked polyethylene insulating layer, 4-flame retardant sheath layer, 5-tensile core, 6-cable core and 7-mica tape.
Detailed Description
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1:
referring to fig. 1, a tensile high-flame-retardance cable sequentially comprises an outer sheath 1, a steel wire armor layer 2, a crosslinked polyethylene insulating layer 3, a flame-retardance sheath layer 4, a plurality of tensile cores 5 and a plurality of cable cores 6 from outside to inside;
the cable core 6 and the tensile core 5 are fixed by wrapping with mica tapes, and the tensile core 5 is a gum dipping aramid fiber bundle, and the preparation method is as follows:
adding 50g of epoxy linseed oil, 30g of phenol and 0.1g of p-toluenesulfonic acid into a high-pressure reaction kettle, uniformly mixing, sealing, heating to 120 ℃ for reacting for 5 hours, cooling to room temperature to obtain a modifier, adding 500g of resorcinol and 30g of modifier into 5L of water, stirring for 30 minutes, adding 20mL of 10wt% sodium hydroxide solution into the solution, uniformly stirring, adding 405mL of formaldehyde solution, fully uniformly mixing, reacting at 25 ℃ for 8 hours, recovering the room temperature, adding 100g of butyl pyridine latex and 80g of styrene-butadiene latex, shearing and stirring at high speed for 50 minutes to obtain a dipping liquid, immersing aramid fibers into 10 seconds, taking out, drying, and collecting into bundles.
Wherein, the outer sheath 1 comprises the following components in parts by weight:
70 parts of chlorinated polyethylene, 35 parts of neoprene, 10 parts of styrene-isoprene block copolymer rubber, 8 parts of C5 petroleum resin, 0.03 part of dicumyl peroxide, 1 part of triallyl isocyanurate, 0.8 part of antioxidant RD, 10 parts of magnesium oxide, 8 parts of zinc oxide, 15 parts of white carbon black and 30 parts of carbon black.
Wherein, the flame-retardant sheath layer 4 comprises the following components in parts by weight:
70 parts of chlorinated polyethylene, 35 parts of neoprene, 10 parts of styrene-isoprene block copolymer rubber, 8 parts of C5 petroleum resin, 0.03 part of dicumyl peroxide, 1 part of triallyl isocyanurate, 0.8 part of antioxidant RD, 10 parts of magnesium oxide, 8 parts of zinc oxide, 15 parts of white carbon black, 30 parts of carbon black and 1.5 parts of flame retardant, wherein the flame retardant comprises the following components in percentage by mass: 1, sodium perfluoro dodecanoate, modified zinc borate.
The preparation method of the sodium perfluorododecanoate modified zinc borate comprises the following steps:
mixing 161.45g zinc sulfate, 205g borax and 61.83g boric acid uniformly, putting into a mortar, adding 10g long-chain alkyl acid salt, grinding for 40min, performing 200W microwave irradiation for 12min, taking out, cooling, washing with water until no sulfate ion exists, and drying at 80 ℃.
Example 2:
referring to fig. 1, a tensile high-flame-retardance cable sequentially comprises an outer sheath 1, a steel wire armor layer 2, a crosslinked polyethylene insulating layer 3, a flame-retardance sheath layer 4, a plurality of tensile cores 5 and a plurality of cable cores 6 from outside to inside;
the cable core 6 and the tensile core 5 are fixed by wrapping with mica tapes, and the tensile core 5 is a gum dipping aramid fiber bundle, and the preparation method is as follows:
adding 50g of epoxy linseed oil, 30g of phenol and 0.1g of p-toluenesulfonic acid into a high-pressure reaction kettle, uniformly mixing, sealing, heating to 130 ℃ for reacting for 5 hours, cooling to room temperature to obtain a modifier, adding 500g of resorcinol and 30g of modifier into 5L of water, stirring for 40 minutes, adding 20mL of 10wt% sodium hydroxide solution into the solution, uniformly stirring, adding 405mL of formaldehyde solution, fully uniformly mixing, reacting at 28 ℃ for 8 hours, recovering the room temperature, adding 100g of butyl pyridine latex and 80g of styrene-butadiene latex, shearing and stirring at high speed for 50 minutes to obtain a dipping liquid, immersing aramid fibers into 10 seconds, taking out, drying, and collecting into bundles.
Wherein, the outer sheath 1 comprises the following components in parts by weight:
80 parts of chlorinated polyethylene, 40 parts of neoprene, 20 parts of styrene-isoprene block copolymer rubber, 10 parts of C5 petroleum resin, 0.05 part of dicumyl peroxide, 2 parts of triallyl isocyanurate, 1 part of an anti-aging agent RD, 10 parts of magnesium oxide, 10 parts of zinc oxide, 20 parts of white carbon black and 40 parts of carbon black.
Wherein, the flame-retardant sheath layer 4 comprises the following components in parts by weight:
80 parts of chlorinated polyethylene, 40 parts of neoprene, 20 parts of styrene-isoprene block copolymer rubber, 10 parts of C5 petroleum resin, 0.05 part of dicumyl peroxide, 2 parts of triallyl isocyanurate, 1 part of anti-aging agent RD, 10 parts of magnesium oxide, 10 parts of zinc oxide, 20 parts of white carbon black, 40 parts of carbon black and 1.5 parts of flame retardant, wherein the flame retardant comprises the following components in percentage by mass: 1, sodium perfluoro dodecanoate, modified zinc borate.
The preparation method of the sodium perfluorododecanoate modified zinc borate comprises the following steps:
mixing 161.45g zinc sulfate, 205g borax and 61.83g boric acid uniformly, putting into a mortar, adding 10g long-chain alkyl acid salt, grinding for 40min, performing 200W microwave irradiation for 15min, taking out, cooling, washing with water until no sulfate ion exists, and drying at 80 ℃.
Example 3:
referring to fig. 1, a tensile high-flame-retardance cable sequentially comprises an outer sheath 1, a steel wire armor layer 2, a crosslinked polyethylene insulating layer 3, a flame-retardance sheath layer 4, a plurality of tensile cores 5 and a plurality of cable cores 6 from outside to inside;
the cable core 6 and the tensile core 5 are fixed by wrapping with mica tapes, and the tensile core 5 is a gum dipping aramid fiber bundle, and the preparation method is as follows:
adding 50g of epoxy linseed oil, 30g of phenol and 0.1g of p-toluenesulfonic acid into a high-pressure reaction kettle, uniformly mixing, sealing, heating to 110 ℃ for reaction for 3 hours, cooling to room temperature to obtain a modifier, adding 500g of resorcinol and 30g of modifier into 5L of water, stirring for 20 minutes, adding 20mL of 10wt% sodium hydroxide solution into the solution, uniformly stirring, adding 405mL of formaldehyde solution, fully uniformly mixing, reacting at 23 ℃ for 6 hours, recovering the room temperature, adding 100g of butyl pyridine latex and 80g of styrene-butadiene latex, shearing and stirring at high speed for 30 minutes to obtain a dipping liquid, immersing aramid fibers into the solution for 5 seconds, taking out and drying, and collecting the aramid fibers into bundles.
Wherein, the outer sheath 1 comprises the following components in parts by weight:
60 parts of chlorinated polyethylene, 30 parts of neoprene, 10 parts of styrene-isoprene block copolymer rubber, 5 parts of C5 petroleum resin, 0.01 part of dicumyl peroxide, 1 part of triallyl isocyanurate, 0.5 part of antioxidant RD, 5 parts of magnesium oxide, 5 parts of zinc oxide, 10 parts of white carbon black and 30 parts of carbon black.
Wherein, the flame-retardant sheath layer 4 comprises the following components in parts by weight:
60 parts of chlorinated polyethylene, 30 parts of neoprene, 10 parts of styrene-isoprene block copolymer rubber, 5 parts of C5 petroleum resin, 0.01 part of dicumyl peroxide, 1 part of triallyl isocyanurate, 0.5 part of antioxidant RD, 5 parts of magnesium oxide, 5 parts of zinc oxide, 10 parts of white carbon black, 30 parts of carbon black and 1 part of flame retardant, wherein the flame retardant comprises the following components in percentage by mass: 1, sodium perfluoro dodecanoate, modified zinc borate.
The preparation method of the sodium perfluorododecanoate modified zinc borate comprises the following steps:
mixing 161.45g zinc sulfate, 205g borax and 61.83g boric acid uniformly, putting into a mortar, adding 10g long-chain alkyl acid salt, grinding for 20min, radiating for 10min by 200W microwave, taking out, cooling, washing with water until no sulfate ion exists, and drying at 80 ℃.
Example 4:
referring to fig. 1, a tensile high-flame-retardance cable sequentially comprises an outer sheath 1, a steel wire armor layer 2, a crosslinked polyethylene insulating layer 3, a flame-retardance sheath layer 4, a plurality of tensile cores 5 and a plurality of cable cores 6 from outside to inside;
the cable core 6 and the tensile core 5 are fixed by wrapping with mica tapes, and the tensile core 5 is a gum dipping aramid fiber bundle, and the preparation method is as follows:
adding 50g of epoxy linseed oil, 30g of phenol and 0.1g of p-toluenesulfonic acid into a high-pressure reaction kettle, uniformly mixing, sealing, heating to 110 ℃ for reacting for 5 hours, cooling to room temperature to obtain a modifier, adding 500g of resorcinol and 30g of modifier into 5L of water, stirring for 20 minutes, adding 20mL of 10wt% sodium hydroxide solution into the solution, uniformly stirring, adding 405mL of formaldehyde solution, fully uniformly mixing, reacting at 28 ℃ for 6 hours, recovering the room temperature, adding 100g of butyl pyridine latex and 80g of styrene-butadiene latex, shearing and stirring at high speed for 50 minutes to obtain a dipping liquid, immersing aramid fibers into the solution for 5 seconds, taking out and drying, and collecting the aramid fibers into bundles.
Wherein, the outer sheath 1 comprises the following components in parts by weight:
80 parts of chlorinated polyethylene, 30 parts of neoprene, 20 parts of styrene-isoprene block copolymer rubber, 5 parts of C5 petroleum resin, 0.05 part of dicumyl peroxide, 1 part of triallyl isocyanurate, 1 part of an anti-aging agent RD, 5 parts of magnesium oxide, 10 parts of zinc oxide, 10 parts of white carbon black and 40 parts of carbon black.
Wherein, the flame-retardant sheath layer 4 comprises the following components in parts by weight:
60 parts of chlorinated polyethylene, 40 parts of neoprene, 10 parts of styrene-isoprene block copolymer rubber, 10 parts of C5 petroleum resin, 0.01 part of dicumyl peroxide, 2 parts of triallyl isocyanurate, 0.5 part of antioxidant RD, 10 parts of magnesium oxide, 5 parts of zinc oxide, 20 parts of white carbon black, 30 parts of carbon black and 1.5 parts of flame retardant, wherein the flame retardant comprises the following components in percentage by mass: 1, sodium perfluoro dodecanoate, modified zinc borate.
The preparation method of the sodium perfluorododecanoate modified zinc borate comprises the following steps:
mixing 161.45g zinc sulfate, 205g borax and 61.83g boric acid uniformly, putting into a mortar, adding 10g long-chain alkyl acid salt, grinding for 20min, radiating for 15min by 200W microwave, taking out, cooling, washing with water until no sulfate ion exists, and drying at 80 ℃.
Example 5:
referring to fig. 1, a tensile high-flame-retardance cable sequentially comprises an outer sheath 1, a steel wire armor layer 2, a crosslinked polyethylene insulating layer 3, a flame-retardance sheath layer 4, a plurality of tensile cores 5 and a plurality of cable cores 6 from outside to inside;
the cable core 6 and the tensile core 5 are fixed by wrapping with mica tapes, and the tensile core 5 is a gum dipping aramid fiber bundle, and the preparation method is as follows:
adding 50g of epoxy linseed oil, 30g of phenol and 0.1g of p-toluenesulfonic acid into a high-pressure reaction kettle, uniformly mixing, sealing, heating to 130 ℃ for reaction for 3 hours, cooling to room temperature to obtain a modifier, adding 500g of resorcinol and 30g of modifier into 5L of water, stirring for 40 minutes, adding 20mL of 10wt% sodium hydroxide solution into the solution, uniformly stirring, adding 405mL of formaldehyde solution, fully uniformly mixing, reacting at 23 ℃ for 8 hours, recovering the room temperature, adding 100g of butyl pyridine latex and 80g of styrene-butadiene latex, shearing and stirring at high speed for 30 minutes to obtain a dipping liquid, immersing aramid fibers into 10 seconds, taking out, drying, and collecting into bundles.
Wherein, the outer sheath 1 comprises the following components in parts by weight:
60 parts of chlorinated polyethylene, 40 parts of neoprene, 10 parts of styrene-isoprene block copolymer rubber, 10 parts of C5 petroleum resin, 0.01 part of dicumyl peroxide, 2 parts of triallyl isocyanurate, 0.5 part of antioxidant RD, 10 parts of magnesium oxide, 5 parts of zinc oxide, 20 parts of white carbon black and 30 parts of carbon black.
Wherein, the flame-retardant sheath layer 4 comprises the following components in parts by weight:
80 parts of chlorinated polyethylene, 30 parts of chloroprene rubber, 20 parts of styrene-isoprene block copolymer rubber, 5 parts of C5 petroleum resin, 0.05 part of dicumyl peroxide, 1 part of triallyl isocyanurate, 1 part of anti-aging agent RD, 5 parts of magnesium oxide, 10 parts of zinc oxide, 10 parts of white carbon black, 40 parts of carbon black and 1 part of flame retardant, wherein the flame retardant comprises the following components in percentage by mass: 1, sodium perfluoro dodecanoate, modified zinc borate.
The preparation method of the sodium perfluorododecanoate modified zinc borate comprises the following steps:
mixing 161.45g zinc sulfate, 205g borax and 61.83g boric acid uniformly, putting into a mortar, adding 10g long-chain alkyl acid salt, grinding for 40min, performing 200W microwave irradiation for 10min, taking out, cooling, washing with water until no sulfate ions exist, and drying at 80 ℃.
Comparative example 1:
substantially the same as in example 1, except that the tensile core 5 was not contained.
Comparative example 2:
substantially the same as in example 1, except that an aramid fiber bundle was directly used as the tensile core 5.
Comparative example 3:
substantially the same as in example 1, except that the tensile core 5 is a dipped aramid fiber bundle, the preparation method thereof is as follows:
adding 530g of resorcinol into 5L of water, stirring for 30min, dripping 20mL of 10wt% sodium hydroxide solution into the solution, stirring uniformly, adding 405mL of formaldehyde solution, fully mixing uniformly, reacting at 25 ℃ for 8h, recovering the room temperature, adding 100g of butadiene-pyridine latex and 80g of styrene-butadiene latex, stirring at high speed for 50min to obtain a dipping solution, immersing the aramid fiber into the solution for 10s, taking out, drying, and collecting into a bundle.
Comparative example 4:
substantially the same as in example 1, except that the flame retardant sheath layer 4 did not contain tris (2-chloropropyl) phosphate.
Comparative example 5:
substantially the same as in example 1, except that the flame retardant sheath layer 4 did not contain sodium perfluorododecanoate modified zinc borate.
Comparative example 6:
substantially the same as in example 1, except that commercially available zinc borate was used in place of the sodium perfluorododecanoate modified zinc borate prepared.
Performance test:
(1) the torsion test is carried out on the tensile high-flame-retardance cables prepared in the embodiments 1-5 and the comparative examples 1-3 by referring to GB/T7424.2-2008, the test piece uniformly rotates 360 degrees around the axis of the test piece in one direction to serve as a one-time torsion period, the unidirectional torsion speed is 60r/min, when the torsion times reach a specified value (1000 periods), the cable is free from cracking, a conductor is not broken, the power frequency voltage is applied for 1500V and 5min and is not broken, the test is considered to be passed, when the torsion times do not reach the specified value, the cable is cracked, the conductor is broken, the test is stopped, and the torsion times are recorded.
The test results are shown in table 1 below:
table 1:
(2) the flame retardant jacket layers (4) prepared in examples 1 to 5 and comparative examples 4 to 6 of the present invention were subjected to performance test, and the test results are shown in the following table 2:
table 2:
as can be seen from the above tables 1 and 2, the tensile high-flame-retardance cable has excellent tensile flame retardance and can meet the use requirements of general scenes.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The tensile high-flame-retardance cable is characterized by comprising an outer sheath, a steel wire armor layer, a crosslinked polyethylene insulating layer, a flame-retardance sheath layer, a tensile core and a cable core;
the tensile core is a gum dipping aramid fiber bundle;
the cable core and the gum dipping aramid fiber bundles are fixed by wrapping with mica tapes;
the preparation method of the gum dipping aramid fiber bundle comprises the following steps:
uniformly mixing epoxy linseed oil, phenol and p-toluenesulfonic acid, heating to 110-130 ℃ for reaction for 3-5h, cooling to room temperature to obtain a modifier, adding resorcinol and the modifier into water, stirring for 20-40min, dropwise adding a sodium hydroxide solution into the solution, stirring uniformly, adding a formaldehyde solution, fully uniformly mixing, reacting at 23-28 ℃ for 6-8h, recovering the room temperature, adding butadiene-pyridine latex and styrene-butadiene latex, stirring at high speed for 30-50min to obtain a dipping solution, immersing aramid fibers into 5-10s, taking out, drying, and collecting into bundles.
2. The tensile high flame-retardant cable according to claim 1, wherein the mass ratio of the epoxy linseed oil, the phenol and the p-toluene sulfonic acid is 500:300:1.
3. the tensile high-flame-retardant cable according to claim 1, wherein the mass ratio of the resorcinol to the modifier is 10-20:1.
4. the tensile high flame retardant cable of claim 1, wherein the outer jacket comprises the following components in parts by weight:
60-80 parts of chlorinated polyethylene, 30-40 parts of neoprene, 10-20 parts of styrene-isoprene block copolymer rubber, 5-10 parts of C5 petroleum resin, 0.01-0.05 part of dicumyl peroxide, 1-2 parts of triallyl isocyanurate, 0.5-1 part of antioxidant RD, 5-10 parts of magnesium oxide, 5-10 parts of zinc oxide, 10-20 parts of white carbon black and 30-40 parts of carbon black.
5. The tensile high flame retardant cable of claim 1, wherein the flame retardant jacket layer comprises the following components in parts by weight:
60-80 parts of chlorinated polyethylene, 30-40 parts of neoprene, 10-20 parts of styrene-isoprene block copolymer rubber, 5-10 parts of C5 petroleum resin, 0.01-0.05 part of dicumyl peroxide, 1-2 parts of triallyl isocyanurate, 0.5-1 part of antioxidant RD, 5-10 parts of magnesium oxide, 5-10 parts of zinc oxide, 10-20 parts of white carbon black, 30-40 parts of carbon black and 1-1.5 parts of flame retardant.
6. The tensile high flame retardant cable of claim 5, wherein the flame retardant comprises tris (2-chloropropyl) phosphate, long chain alkyl acid salt modified zinc borate.
7. The tensile high-flame-retardant cable according to claim 6, wherein the mass ratio of the tri (2-chloropropyl) phosphate to the long-chain alkyl acid salt modified zinc borate is 1-5:1-5.
8. The tensile high flame retardant cable of claim 7, wherein the long chain alkyl acid salt modified zinc borate is prepared by the following method:
mixing zinc sulfate, borax and boric acid uniformly, placing into a mortar, adding long-chain alkyl acid salt, grinding for 20-40min, performing microwave irradiation for 10-15min, taking out, cooling, washing with water until no sulfate ion exists, and drying.
9. The tensile highly flame-retardant cable according to claim 8, wherein the long-chain alkyl acid salt is a sodium salt of a 10-16 carbon-atom-containing alkyl acid, and at least one hydrogen atom in the sodium salt of the 10-16 carbon-atom-containing alkyl acid is substituted or unsubstituted with fluorine.
10. The tensile highly flame resistant cable of claim 9, wherein the long chain alkyl acid salt is sodium perfluorododecanoate.
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| CN201421731Y (en) * | 2009-06-01 | 2010-03-10 | 宝胜科技创新股份有限公司 | Novel environment resistance environment-friendly power cable of shield machine |
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