CN117700891B - Radiation-resistant tensile festoon cable - Google Patents
Radiation-resistant tensile festoon cable Download PDFInfo
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- CN117700891B CN117700891B CN202311776171.9A CN202311776171A CN117700891B CN 117700891 B CN117700891 B CN 117700891B CN 202311776171 A CN202311776171 A CN 202311776171A CN 117700891 B CN117700891 B CN 117700891B
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- cable
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- radiation
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- 230000005855 radiation Effects 0.000 title claims abstract description 27
- 241000842962 Apoda limacodes Species 0.000 title claims abstract description 9
- 229920001971 elastomer Polymers 0.000 claims abstract description 38
- 239000005060 rubber Substances 0.000 claims abstract description 38
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 33
- 239000006229 carbon black Substances 0.000 claims abstract description 32
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 20
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004709 Chlorinated polyethylene Substances 0.000 claims abstract description 12
- 238000004132 cross linking Methods 0.000 claims abstract description 9
- 239000011787 zinc oxide Substances 0.000 claims abstract description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012188 paraffin wax Substances 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 239000011593 sulfur Substances 0.000 claims abstract description 8
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 37
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 18
- 229920000877 Melamine resin Polymers 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 238000004073 vulcanization Methods 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000004440 column chromatography Methods 0.000 claims description 8
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 claims description 7
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 6
- IBDMRHDXAQZJAP-UHFFFAOYSA-N dichlorophosphorylbenzene Chemical compound ClP(Cl)(=O)C1=CC=CC=C1 IBDMRHDXAQZJAP-UHFFFAOYSA-N 0.000 claims description 6
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 claims description 5
- 239000005062 Polybutadiene Substances 0.000 claims description 5
- 229920002857 polybutadiene Polymers 0.000 claims description 5
- VYKNVAHOUNIVTQ-UHFFFAOYSA-N 1,2,2,3,3-pentamethylpiperidine Chemical compound CN1CCCC(C)(C)C1(C)C VYKNVAHOUNIVTQ-UHFFFAOYSA-N 0.000 claims description 4
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 4
- NIZBFFOETCKGBI-UHFFFAOYSA-N 1-hydroxy-2,2,3,3,4-pentamethylpiperidine Chemical compound CC1CCN(O)C(C)(C)C1(C)C NIZBFFOETCKGBI-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims 3
- 230000032683 aging Effects 0.000 abstract description 12
- 239000003063 flame retardant Substances 0.000 abstract description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 8
- 239000011159 matrix material Substances 0.000 abstract description 8
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 27
- 239000003480 eluent Substances 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 238000002390 rotary evaporation Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- 239000012046 mixed solvent Substances 0.000 description 6
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical compound Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000004636 vulcanized rubber Substances 0.000 description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000012024 dehydrating agents Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical class ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000007112 amidation reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012650 click reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000010534 nucleophilic substitution reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a radiation-resistant tensile festoon cable. Consists of a plurality of parallel cables and an externally coated flat protection sleeve. The protective sleeve is prepared from ethylene propylene diene monomer, chlorinated polyethylene, carbon black, white carbon black, an auxiliary agent, an anti-aging agent, paraffin, zinc oxide, a crosslinking sensitizer and sulfur according to the dosage ratio of 70g to 20g to 40g to 20g to 6-10g to 4g to 1g to 5g to 7g to 0.5 g. By carrying out surface modification on the carbon black and the white carbon black at the same time, the weather resistance, ageing resistance, wear resistance and tensile and tear resistance of the cable are obviously enhanced. The prepared auxiliary agent can be crosslinked with a matrix rubber molecular chain, so that the compatibility is improved; in addition, the auxiliary agent can also improve the flame retardance and the light radiation resistance of the cable. Therefore, the prepared cable has stable and efficient radiation resistance, ageing resistance, wear resistance, tensile tear resistance and flame retardant property to a certain extent, and fully meets the use requirement of the towing cable of the nuclear power station.
Description
Technical Field
The invention belongs to the technical field of cables, and particularly relates to a radiation-resistant tensile towing cable.
Background
The towing cable (festooncable) was originally designed for transmission of electricity, signals, and so control the crane, hoist, or any side-to-side equipment that was powered and transmitted signal instructions. Why a tow command is called can be understood as a power tow (electric power) and transmission (movement, etc.) control command. The common towing cable is divided into a round cable and a flat cable, wherein the towing flat cable has great effects in power and electric transmission and control signal transmission, and is suitable for a towing system of hoisting and long-stroke material conveying processing equipment. Therefore, the towing cable has great requirements on mechanical properties such as tensile strength, tear resistance, wear resistance and the like.
In recent years, the domestic rapid development of nuclear power brings great attention to the matched wire and cable industry, and the nuclear power plant cable needs to have better radiation resistance to ensure the running stability of the nuclear power plant, so that the use of the common towing cable is limited. The insulation and sheath materials of the common towing cable are usually polyvinyl chloride, crosslinked polyolefin and the like, and the materials have poor radiation resistance, can age rapidly under irradiation to cause the cable to fail, and bring great risk to the safe operation of the nuclear power station. Furthermore, the use of the festoon cable is often outdoors, requiring long exposure to sunlight, which places stringent requirements on the festoon cable's resistance to light radiation.
Ethylene propylene rubber is a synthetic rubber with ethylene and propylene as main monomers, and according to the difference of monomer compositions in molecular chains, ethylene propylene rubber (EPM) and Ethylene Propylene Diene Monomer (EPDM) are adopted. The ethylene propylene diene monomer is a terpolymer of ethylene, propylene and non-conjugated diene, and the molecular chain structure is characterized in that the molecular chain basically does not contain unsaturated bonds, the steric hindrance of substituent groups is small, and the molecular chain has good flexibility, so that the ethylene propylene diene monomer is a saturated amorphous rubber. The molecular structure determines that the EPDM has good mechanical property, weather resistance, radiation resistance, corrosion resistance and ozone resistance, and has wide application in the field of nuclear power plants due to the excellent performance. However, when the ethylene propylene diene monomer is used as a towing cable, the wear resistance, oil resistance and flame retardance of the ethylene propylene diene monomer are insufficient, and in addition, the problem of overlong vulcanization time also needs to be improved so as to meet the use requirement of the towing cable of the nuclear power station.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a radiation-resistant tensile festoon cable.
The aim of the invention can be achieved by the following technical scheme:
A radiation-resistant tensile festoon cable is composed of a plurality of parallel cables and an externally coated flat protection sleeve.
Further, the cable is composed of a conductor and an outer wrapped insulation layer.
Further, the conductor is a copper conductor.
Further, the insulating layer is a mica tape.
Further, the protective sheath material is prepared by the following steps:
Adding ethylene propylene diene monomer and chlorinated polyethylene into an internal mixer at the temperature of 100 ℃, mixing for 2min, adding carbon black and partial auxiliary agents, mixing for 2min, adding white carbon black and residual auxiliary agents, mixing for 2min, adding an anti-aging agent and paraffin wax, performing heat treatment at 150 ℃ for 5min, discharging rubber to obtain rubber material, sequentially adding zinc oxide, a crosslinking sensitizer and sulfur on an open mill after the rubber material is rolled by Bao Tongbao rolls, and performing open mill to obtain rubber compound, and performing irradiation vulcanization on the rubber compound to obtain the protective sleeve material.
Further, the anti-aging agent is prepared by compounding anti-aging agent 4010NA and anti-aging agent 2246 according to the mass ratio of 1:1.
Further, the crosslinking sensitizer is one of triallyl cyanurate and triallyl isocyanurate.
Further, the dosage ratio of ethylene propylene diene monomer, chlorinated polyethylene, carbon black, white carbon black, auxiliary agent, anti-aging agent, paraffin, zinc oxide, crosslinking sensitizer and sulfur is 70g:20g:40g:20g:6-10g:4g:1g:5g:7g:0.5g.
The chlorinated polyethylene and the ethylene propylene diene monomer have good compatibility, and the vulcanization properties of the chlorinated polyethylene and the ethylene propylene diene monomer are similar, so that the addition of the chlorinated polyethylene can effectively improve the oil resistance of the ethylene propylene diene monomer, and can further enhance the weather resistance and the ageing resistance of the protective sleeve material; the carbon black, the white carbon black and the zinc oxide are used together to be used as ethylene propylene diene monomer rubber reinforcing filler, so that the wear resistance and the mechanical strength of the protective sleeve material are obviously improved; the anti-aging agent is prepared by compounding an amine anti-aging agent and a phenol anti-aging agent, which can play a role in synergy, so that the anti-aging performance of the protective sleeve material is effectively enhanced; under the action of the crosslinking sensitizer, irradiation vulcanization is adopted, and the prepared protective sleeve material has better ageing resistance.
Further, the auxiliary agent is prepared by the following steps:
S1, adding melamine and pyridine into a three-neck flask provided with a stirring device, heating to 45 ℃ and continuously stirring until the melamine is completely dissolved; introducing nitrogen, adding thioglycollic acid and DCC (dicyclohexylcarbodiimide, dehydrating agent), mixing and stirring uniformly, heating to 60 ℃, preserving heat and reacting for 50min, filtering after the reaction is finished, distilling under reduced pressure to remove the solvent, and vacuum drying to obtain an intermediate 1; the dosage ratio of melamine, pyridine, thioglycollic acid and DCC is 15.3g to 100mL to 9.2g to 20.6g;
The carboxyl of thioglycollic acid and the amino of melamine are subjected to amidation reaction, the reaction can be carried out under milder conditions with the help of a dehydrating agent, and only one amino group on the melamine participates in the reaction by controlling the molar ratio of the carboxyl of thioglycollic acid to the amino of the melamine to be close to 1:1 and slightly excessive, so that an intermediate 1 is obtained; the specific reaction process is as follows:
S2, adding pentamethylpiperidine alcohol and toluene into a three-neck flask with a stirring device, fully stirring and uniformly mixing, adding phenylphosphonic dichloride, dibutyltin oxide (catalyst) and triethylamine, uniformly mixing and stirring, reacting for 2 hours at 65 ℃, filtering to remove triethylamine hydrochloride, removing a solvent by rotary evaporation, purifying by column chromatography (eluent adopts a mixed solvent of chloroform and benzene, the volume ratio of the chloroform to the benzene is 5:3), and removing the eluent by rotary evaporation to obtain an intermediate 2; the dosage ratio of pentamethylpiperidinol, toluene, phenylphosphonic dichloride, dibutyltin oxide and triethylamine is 17.2g:70mL:22.4g:0.2g:20mL;
under the catalysis of dibutyl tin oxide, benzene phosphonyl dichloride and pentamethyl piperidinol undergo esterification reaction, and only one-Cl on the benzene phosphonyl dichloride participates in the reaction by controlling the molar ratio of the benzene phosphonyl dichloride to the pentamethyl piperidinol to be close to 1:1 and slightly excessive, and triethylamine removes hydrogen chloride generated by the reaction to obtain an intermediate 2; the specific reaction process is as follows:
S3, uniformly mixing and stirring the intermediate 1, the intermediate 2, toluene and triethylamine in a three-neck flask with a stirring device at room temperature under the protection of nitrogen, controlling the reaction temperature to be 70 ℃, reacting for 2 hours, filtering to remove triethylamine hydrochloride, distilling under reduced pressure to remove part of solvent, purifying by column chromatography (eluent adopts a benzene/methanol mixed solvent with the volume ratio of 2:7), removing eluent by rotary evaporation, and drying in vacuum to obtain an intermediate 3; the ratio of the dosage of the intermediate 1 to the dosage of the intermediate 2 to the dosage of toluene to the dosage of triethylamine are 23.1g to 32.9g to 100mL to 20mL;
Nucleophilic substitution is carried out on the intermediate 1 and the intermediate 2, and only one amino group on the intermediate 1 participates in the reaction by controlling the molar ratio of the intermediate 1 and the intermediate 2 to be close to 1:1 and slightly excessive, so as to obtain an intermediate 3; removing hydrogen chloride generated by the reaction by triethylamine to obtain an intermediate 3; the specific reaction process is as follows:
S4, respectively dissolving triethoxysilane-terminated polybutadiene (TTPB) and an intermediate 3 in ethyl acetate and N, N-Dimethylformamide (DMF), stirring uniformly, adding the mixture into a three-neck flask, fully mixing, controlling the reaction temperature to be 80 ℃, stirring and reacting for 3 hours, after the reaction is finished, using absolute ethyl alcohol to wash a solution, precipitating a product, repeatedly washing the precipitate for three times by using absolute ethyl alcohol, and carrying out vacuum drying to obtain an auxiliary agent; TTPB, intermediate 3, ethyl acetate, DMF in a ratio of 10g:15g:50ml:75ml;
Grafting the intermediate 3 on TTPB through a sulfhydryl-alkene click reaction to obtain an auxiliary agent; the specific reaction process is as follows:
The prepared auxiliary agent takes TTPB as a matrix, grafts and modifies a molecular chain, amino and siloxy in the auxiliary agent can react with oxygen-containing functional groups on the surface of carbon black, not only can the siloxy also react with white carbon black, and grafts on the surfaces of the carbon black and the white carbon black, but also the addition of the auxiliary agent can improve the interfacial compatibility of the carbon black and the white carbon black with the matrix rubber, so that the agglomeration phenomenon of the white carbon black is reduced, and the wear resistance, ageing resistance and mechanical strength of the matrix rubber are obviously improved; in addition, the auxiliary agent is grafted on the surface of the inorganic matter, so that exudation and migration are difficult, and the durability of each performance is ensured; in addition, the auxiliary agent also contains a P-N flame retardant component, a hindered amine structure and a polybutadiene section, wherein the P-N flame retardant component is an excellent halogen-free flame retardant component, has the synergistic flame retardant effect of a phosphorus flame retardant and a nitrogen flame retardant, and can endow the base rubber with environment-friendly and efficient flame retardant performance; the hindered amine plays a role of a light stabilizer, and can decompose hydrogen dioxide to generate stable nitroxide free radicals in light protection, so that the compound can very effectively capture the free radicals generated in photo-oxidative degradation, and the light radiation resistance of the matrix rubber can be improved; finally, the polybutadiene segment can be crosslinked with a matrix rubber molecular chain to form a chemical interface between the filler and the rubber, and the auxiliary agent grafted on the surface of the filler forms a good isolation modified structure between the filler and the rubber, so that the interaction between carbon black is reduced, and the compatibility is improved.
The invention has the beneficial effects that:
1. According to the invention, the carbon black and the white carbon black are subjected to surface modification at the same time, so that compared with the traditional filler without surface modification, the compatibility between the carbon black and the white carbon black and the matrix rubber is improved, and the weather resistance, ageing resistance, wear resistance and tensile and tear resistance of the cable are obviously enhanced.
2. By co-vulcanizing the ethylene propylene diene monomer and the chlorinated polyethylene, the weather resistance of the cable is further improved, and the oil resistance of the cable is improved.
3. Compared with the traditional chemical vulcanization, the radiation vulcanization method is quicker, saves energy and has less environmental pollution; and the crosslinking bond is a C-C bond during radiation vulcanization, so that the flexibility and the ageing resistance of the adhesive are better than those of C-S bonds generated by chemical vulcanization.
4. The prepared auxiliary agent is grafted on the surface of the filler, is not easy to migrate and exude, can be crosslinked with a matrix rubber molecular chain, and improves the compatibility; in addition, the auxiliary agent can also improve the flame retardance and the light radiation resistance of the cable.
Therefore, the prepared cable has stable and efficient radiation resistance, ageing resistance, wear resistance, tensile tear resistance and flame retardant property to a certain extent, and fully meets the use requirement of the towing cable of the nuclear power station.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Preparing an auxiliary agent:
S1, adding 15.3g of melamine and 100mL of pyridine into a three-neck flask with a stirring device, heating to 45 ℃ and continuously stirring until the melamine is completely dissolved; introducing nitrogen, adding 9.2g of thioglycollic acid and 20.6g of DCC, uniformly mixing and stirring, heating to 60 ℃, preserving heat and reacting for 50min, filtering after the reaction is finished, distilling under reduced pressure to remove the solvent, and vacuum drying to obtain an intermediate 1;
S2, adding 17.2g of pentamethylpiperidine alcohol and 70mL of toluene into a three-neck flask with a stirring device, fully stirring and uniformly mixing, adding 22.4g of phenylphosphonic dichloride, 0.2g of dibutyltin oxide and 20mL of triethylamine, uniformly mixing and stirring, reacting for 2 hours at 65 ℃, filtering to remove triethylamine hydrochloride, removing a solvent by rotary evaporation, purifying by column chromatography (eluent adopts a chloroform/benzene mixed solvent with the volume ratio of 5:3), and removing the eluent by rotary evaporation to obtain an intermediate 2;
S3, mixing and stirring 23.1g of intermediate 1, 32.9g of intermediate 2, 100mL of toluene and 20mL of triethylamine uniformly in a three-neck flask with a stirring device at room temperature under the protection of nitrogen, controlling the reaction temperature to be 70 ℃, reacting for 2 hours, filtering to remove triethylamine hydrochloride, distilling under reduced pressure to remove part of solvent, purifying by column chromatography (eluent adopts a mixed solvent of benzene/methanol with the volume ratio of 2:7), removing eluent by rotary evaporation, and drying in vacuum to obtain intermediate 3;
s4, respectively dissolving 10g TTPB g intermediate 3 and 15g intermediate 3 in 50mL ethyl acetate and 75mL DMF, stirring uniformly, adding the mixture into a three-neck flask, fully mixing, controlling the reaction temperature to be 80 ℃, stirring and reacting for 3h, washing the solution with absolute ethyl alcohol after the reaction is finished, precipitating a product, repeatedly washing the precipitate with absolute ethyl alcohol for three times, and carrying out vacuum drying to obtain the auxiliary agent.
Example 2
S1, adding 30.6g of melamine and 200mL of pyridine into a three-neck flask with a stirring device, heating to 45 ℃ and continuously stirring until the melamine is completely dissolved; introducing nitrogen, adding 18.4g of thioglycollic acid and 41.2g of DCC, uniformly mixing and stirring, heating to 60 ℃, preserving heat and reacting for 50min, filtering after the reaction is finished, distilling under reduced pressure to remove the solvent, and vacuum drying to obtain an intermediate 1;
S2, adding 34.4g of pentamethylpiperidine alcohol and 140mL of toluene into a three-neck flask with a stirring device, fully stirring and uniformly mixing, adding 44.8g of phenylphosphonic dichloride, 0.4g of dibutyltin oxide and 40mL of triethylamine, uniformly mixing and stirring, reacting for 2 hours at 65 ℃, filtering to remove triethylamine hydrochloride, removing a solvent by rotary evaporation, purifying by column chromatography (eluent adopts a chloroform/benzene mixed solvent with the volume ratio of 5:3), and removing the eluent by rotary evaporation to obtain an intermediate 2;
S3, mixing and stirring 46.2g of intermediate 1, 65.8g of intermediate 2, 200mL of toluene and 40mL of triethylamine uniformly in a three-neck flask with a stirring device at room temperature under the protection of nitrogen, controlling the reaction temperature to be 70 ℃, reacting for 2 hours, filtering to remove triethylamine hydrochloride, distilling under reduced pressure to remove part of solvent, purifying by column chromatography (eluent adopts a mixed solvent of benzene/methanol with the volume ratio of 2:7), removing eluent by rotary evaporation, and drying in vacuum to obtain intermediate 3;
S4, respectively dissolving 20g TTPB g and 30g of intermediate 3 in 100mL ethyl acetate and 150mL DMF, stirring uniformly, adding into a three-neck flask, fully mixing, controlling the reaction temperature to be 80 ℃, stirring for 3h, washing the solution with absolute ethyl alcohol after the reaction is finished, precipitating the product, repeatedly washing the precipitate with absolute ethyl alcohol for three times, and carrying out vacuum drying to obtain the auxiliary agent.
TTPB used in examples 1-2 was produced by Evonik, germany.
Example 3
70G of ethylene propylene diene monomer and 20g of chlorinated polyethylene are added into an internal mixer at the temperature of 100 ℃,40 g of carbon black and 3g of the auxiliary agent prepared in the example 1 are added after mixing for 2min, 20g of white carbon black and 3g of the auxiliary agent prepared in the example 1 are added, after mixing for 2min, 2g of anti-aging agent 4010NA, 2g of anti-aging agent 2246 and 1g of paraffin are added, heat treatment is carried out for 5min at the temperature of 150 ℃, rubber is discharged to obtain rubber material, after the rubber material is rolled on a roll mill Bao Tongbao, 5g of zinc oxide, 7g of triallyl cyanurate and 0.5g of sulfur are sequentially added, the open mill is completed, the rubber compound is obtained, and radiation vulcanization is carried out on the rubber compound, so as to obtain the protective sleeve material.
Example 4
70G of ethylene propylene diene monomer and 20g of chlorinated polyethylene are added into an internal mixer at the temperature of 100 ℃, 40g of carbon black and 4g of auxiliary agent prepared in the example 2 are added after mixing for 2min, 20g of white carbon black and 4g of auxiliary agent prepared in the example 2 are added, after mixing for 2min, 2g of antioxidant 4010NA, 2g of antioxidant 2246 and 1g of paraffin are added, heat treatment is carried out for 5min at the temperature of 150 ℃, rubber is discharged to obtain rubber material, after the rubber material is put on a Bao Tongbao roller of an open mill, 5g of zinc oxide, 7g of triallyl isocyanurate and 0.5g of sulfur are sequentially added, the open mill is completed, the rubber compound is obtained, and radiation vulcanization is carried out on the rubber compound, so as to obtain the protective sleeve material.
Example 5
Adding 70g of ethylene propylene diene monomer and 20g of chlorinated polyethylene into an internal mixer at the temperature of 100 ℃, mixing for 2min, adding 40g of carbon black and 5g of the auxiliary agent prepared in the example 2, mixing for 2min, adding 20g of white carbon black and 5g of the auxiliary agent prepared in the example 2, mixing for 2min, adding 2g of anti-aging agent 4010NA, 2g of anti-aging agent 2246 and 1g of paraffin wax, performing heat treatment at the temperature of 150 ℃ for 5min, discharging rubber to obtain rubber, mixing the rubber on an open mill for Bao Tongbao min, sequentially adding 5g of zinc oxide, 7g of triallyl isocyanurate and 0.5g of sulfur, and performing open mill to obtain rubber compound, and performing radiation vulcanization on the rubber compound to obtain the protective sleeve material.
Example 6
And (3) wrapping a mica tape insulating layer outside the copper conductor to form a cable, arranging the cable in parallel, and wrapping the protective sleeve material prepared in the embodiment 3 outside the cable to form a flat protective sleeve, so that the high-temperature-resistant movable flat cable special for the steel clad vehicle is obtained.
Comparative example 1
The procedure was the same as in example 5, except that no auxiliary agent was added.
Comparative example 2
An ozone-resistant weather-resistant cable sheath material of the type EPDM3745P commercially available from the company limited of neutralization chemistry (shandong) was used.
The protective sleeve materials of examples 3-5 and comparative examples 1-2 were prepared into corresponding shapes to be tested according to different test standards, and the following performance tests were performed:
The abrasion volume is measured by adopting national standard GB/T25262, the abrasion test guideline for vulcanized rubber or thermoplastic rubber;
The oxygen index is measured by adopting national standard GB/T10707 determination of rubber combustion Performance;
The tensile strength and the elongation at break are measured by adopting national standard GB/T528 'measurement of tensile properties of vulcanized rubber and thermoplastic rubber';
The light radiation resistance is measured by adopting a national standard GB/T16585 test method for artificial weathering aging (fluorescent ultraviolet lamp) of vulcanized rubber;
The ageing resistance is measured by adopting national standard GB/T3512 hot air accelerated ageing and heat resistance test of vulcanized rubber or thermoplastic rubber;
After irradiation for 30min by using 60 Co-gamma ray irradiation dose (390 kGy/80 ℃), the bending sample is checked for cracking;
The results are shown in the following table:
As can be seen from the above table, the properties of the protective sleeve materials prepared in examples 3-5 are better than those of the commercially available triethylenepropylene rubber, and the radiation resistance, the ageing resistance, the wear resistance, the tensile resistance and the flame retardance of the cable protective sleeve material are enhanced along with the increasing of the use amount of the auxiliary agent, so that the cable prepared from the protective sleeve material fully meets the use requirement of the towing cable of the nuclear power station.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (4)
1. The radiation-resistant tensile festoon cable consists of a plurality of parallel cables and a flat protective sleeve coated outside, and is characterized in that the protective sleeve material is prepared by the following steps:
Adding ethylene propylene diene monomer and chlorinated polyethylene into an internal mixer at the temperature of 100 ℃, mixing for 2min, adding carbon black and partial auxiliary agents, mixing for 2min, adding white carbon black and residual auxiliary agents, mixing for 2min, adding an anti-aging agent and paraffin wax, performing heat treatment at 150 ℃ for 5min, discharging rubber to obtain rubber material, mixing the rubber material on an open mill for Bao Tongbao rolls, sequentially adding zinc oxide, a crosslinking sensitizer and sulfur, and performing open mill to obtain mixed rubber, and performing radiation vulcanization on the mixed rubber to obtain a protective sleeve material;
Wherein, the auxiliary agent is prepared by the following steps:
s1, adding melamine and pyridine into a three-neck flask, heating to 45 ℃ and stirring until the melamine is completely dissolved; introducing nitrogen, adding thioglycollic acid and DCC, mixing and stirring uniformly, heating to 60 ℃, reacting for 50min at a constant temperature, filtering, distilling under reduced pressure, and vacuum drying to obtain an intermediate 1; the dosage ratio of melamine, pyridine, thioglycollic acid and DCC is 15.3g to 100mL to 9.2g to 20.6g;
S2, adding pentamethylpiperidine alcohol and toluene into a three-neck flask, fully stirring and uniformly mixing, adding phenylphosphonic dichloride, dibutyltin oxide and triethylamine, uniformly mixing and stirring, reacting for 2 hours at 65 ℃, filtering, rotary steaming, purifying by column chromatography, and rotary steaming to obtain an intermediate 2; the dosage ratio of pentamethylpiperidinol, toluene, phenylphosphonic dichloride, dibutyltin oxide and triethylamine is 17.2g:70mL:22.4g:0.2g:20mL;
S3, uniformly mixing and stirring the intermediate 1, the intermediate 2, toluene and triethylamine in a three-neck flask at room temperature under the protection of nitrogen, reacting for 2 hours at 70 ℃, filtering, distilling under reduced pressure, purifying by column chromatography, rotary steaming, and vacuum drying to obtain an intermediate 3; the ratio of the dosage of the intermediate 1 to the dosage of the intermediate 2 to the dosage of toluene to the dosage of triethylamine are 23.1g to 32.9g to 100mL to 20mL;
S4, respectively dissolving triethoxysilane-terminated polybutadiene and the intermediate 3 in ethyl acetate and DMF, stirring uniformly, adding the mixture into a three-neck flask, fully mixing, controlling the reaction temperature to be 80 ℃, stirring and reacting for 3 hours, using absolute ethyl alcohol to wash the solution, separating out the product, washing the product with absolute ethyl alcohol for three times, and drying in vacuum to obtain the auxiliary agent; triethoxysilane-terminated polybutadiene, intermediate 3, ethyl acetate, DMF were used in a ratio of 10g to 15g to 50mL to 75mL.
2. The radiation-resistant tensile festoon cable according to claim 1, wherein the anti-aging agent is prepared by compounding anti-aging agent 4010NA and anti-aging agent 2246 according to a mass ratio of 1:1.
3. The radiation resistant tensile traction cable of claim 1 wherein the crosslinking sensitizer is one of triallyl cyanurate, triallyl isocyanurate.
4. The radiation-resistant tensile towing cable according to claim 1, wherein the dosage ratio of ethylene propylene diene monomer, chlorinated polyethylene, carbon black, white carbon black, auxiliary agents, anti-aging agents, paraffin wax, zinc oxide, crosslinking sensitizer and sulfur is 70g:20g:40g:20g:6-10g:4g:1g:5g:7g:0.5g.
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