CN103756163A - 1E-level K1-class cable insulating material for AP1000 nuclear power station and preparation method thereof - Google Patents
1E-level K1-class cable insulating material for AP1000 nuclear power station and preparation method thereof Download PDFInfo
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- CN103756163A CN103756163A CN201310752879.0A CN201310752879A CN103756163A CN 103756163 A CN103756163 A CN 103756163A CN 201310752879 A CN201310752879 A CN 201310752879A CN 103756163 A CN103756163 A CN 103756163A
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- 239000011810 insulating material Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 59
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 48
- 239000000779 smoke Substances 0.000 claims abstract description 36
- 239000004708 Very-low-density polyethylene Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920001866 very low density polyethylene Polymers 0.000 claims abstract description 31
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 26
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 22
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 claims abstract description 14
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- DECIPOUIJURFOJ-UHFFFAOYSA-N ethoxyquin Chemical compound N1C(C)(C)C=C(C)C2=CC(OCC)=CC=C21 DECIPOUIJURFOJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- -1 2-methyl-4-hydroxyl-5-tert-butyl phenyl Chemical group 0.000 claims abstract description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000005977 Ethylene Substances 0.000 claims abstract description 10
- 238000004132 cross linking Methods 0.000 claims abstract description 10
- 239000000155 melt Substances 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 8
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 6
- 229920005679 linear ultra low density polyethylene Polymers 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 23
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 22
- 239000012774 insulation material Substances 0.000 claims description 21
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 12
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical group COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 11
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 10
- 235000019285 ethoxyquin Nutrition 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 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 9
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 8
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 235000019359 magnesium stearate Nutrition 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 27
- 229920010346 Very Low Density Polyethylene (VLDPE) Polymers 0.000 abstract 1
- 239000001273 butane Substances 0.000 abstract 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 abstract 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 abstract 1
- 239000002585 base Substances 0.000 description 17
- 230000007774 longterm Effects 0.000 description 8
- 230000005855 radiation Effects 0.000 description 8
- 239000003963 antioxidant agent Substances 0.000 description 7
- 230000003078 antioxidant effect Effects 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 239000011256 inorganic filler Substances 0.000 description 6
- 229910003475 inorganic filler Inorganic materials 0.000 description 6
- 238000011056 performance test Methods 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000003878 thermal aging Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- HCILJBJJZALOAL-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)-n'-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyl]propanehydrazide Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 HCILJBJJZALOAL-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/064—VLDPE
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention provides a 1E-level K1-class low-smoke halogen-free vulcanized and crosslinked cable insulating material for an AP1000 nuclear power station. The material comprises the following components in parts by weight: 100 parts of basic resin, 80-180 parts of a reinforcing agent, 3-10 parts of a lubricant, 3-15 parts of an anti-aging agent, 0.1-0.8 part of copper resistant, 2-8 parts of a coupling agent, 3-5 parts of a crosslinking agent and 2-5 parts of a crosslinking sensitizer. The basic resin is selected from 50-80 parts of ethylene propylene diene monomer (EDPM) and 20-50 parts of very low density polyethylene (VLDPE), wherein the melt index of the VLDPE is 0.5-5g/10min, the Mooney viscosity of the EDPM is 20-35 [ML(1+4), 100 DEG C], and ethylene content of the EDPM is 55-70%. The anti-aging agent is 2, 6-ditertiary butyl p-cresol (anti-aging agent 264), 1, 3-tri(2-methyl-4-hydroxyl-5-tert-butyl phenyl) butane (an antioxidant CA), 6-ethoxyl-2, 2, 4-trimethyl-1, 2-dihydroquinoline (an anti-aging agent AW), a 2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer (an anti-aging agent RD) or combination thereof.
Description
Technical Field
The invention relates to a low-smoke halogen-free cable insulating material for a nuclear power station, in particular to a 1E-level K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for an AP1000 nuclear power station and a preparation method thereof.
Background
AP1000 American West House company designs and develops a double-loop 1000MW stage pressurized water reactor. The AP1000 adopts a passive safety system on the basis of the traditional pressurized water reactor nuclear power technology, and the design life is as long as 60 years. Level 1E is the safety level of the reactor in the AP1000 nuclear power plant and the electrical systems and equipment in the power plant. The 1E level requires the system to complete the emergency shutdown of the reactor; containment vessel isolation, reactor core emergency cooling, reactor waste heat removal and reactor containment vessel heat removal; and the radioactive substances are prevented from being discharged to the surrounding environment. The cable of the K1 type is installed in a containment vessel, and can perform a predetermined function under normal conditions, earthquake loads, accident environments or after an accident by a quality verification program of the K1 type. To meet the specification of 1E class K1, the cable insulation material must have excellent long-term thermal aging resistance, electrical stability, chemical stability and radiation resistance. In the common cable insulation material, under the environment of long-term thermal aging and nuclear radiation, the polymer is seriously degraded, and the performance of the material can not meet the use requirement of the cable of a nuclear power station. The service life of the AP1000 nuclear power station is required to be 60 years, while the original cable design requirement is 40 years, so the design service life of the cable material needs to be improved.
In order to meet the strict validation procedures of K1 cable, the cable insulation material is required to have high insulation performance because of the strict K1 cableAfter the cable verification procedure, the cable is required to have a function of normal operation, and if the volume resistivity of the insulating material is not high enough, breakdown occurs at the end of the verification procedure. The volume resistivity of a general low-smoke halogen-free cable is 1012Ohm meters, can not basically meet the requirement of E1 grade K1 cable verification.
The environment in the containment is a high-temperature and high-humidity environment, the common low-smoke halogen-free material contains a large amount of filler, so that moisture absorption is easy, and the mechanical property or the electrical property of the cable material after moisture absorption is greatly reduced.
In conclusion, the formulation of the 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for the AP1000 nuclear power station, which can overcome the technical difficulties in the prior art, is lacked in the field, and the cable insulating material is required to be a low-smoke halogen-free cable material, so that the cable insulating material has the advantages of high volume resistivity, long service life of 60 years at the service temperature of 90 ℃, strong radiation resistance and the like.
Disclosure of Invention
The invention aims to overcome the technical difficulty in the prior art and provide a formula of a 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for an AP1000 nuclear power station. The cable insulation material is a low-smoke halogen-free cable material, has high volume resistivity, has the service life of 60 years at the service temperature of 90 ℃, and has the advantages of strong radiation resistance and the like.
The second purpose of the invention is to obtain a preparation method of the 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for the AP1000 nuclear power station, which can overcome the technical difficulty in the prior art. The cable insulation material is a low-smoke halogen-free cable material, has high volume resistivity, has the service life of 60 years at the service temperature of 90 ℃, and has the advantages of strong radiation resistance and the like.
In a first aspect of the invention, the invention provides a 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for an AP1000 nuclear power station, which comprises the following components in parts by weight:
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35 (ML (1+4),100 ℃), and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof.
In a specific embodiment of the invention, the 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station comprises the following components in parts by weight:
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35 (ML (1+4),100 ℃), and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof.
In one embodiment of the present invention, the EDPM in the base resin is an ENB type EDPM.
In one embodiment of the present invention, wherein the strengthening agent is selected from zinc oxide, calcined kaolin, or a combination thereof.
Preferably, wherein the strengthening agent is selected from the group consisting of zinc oxide and calcined kaolin in combination:
30-60 parts of zinc oxide;
and 50-90 parts of calcined argil.
In one embodiment of the invention, the lubricant is selected from: calcium stearate, zinc stearate, magnesium stearate or polyethylene wax.
In one embodiment of the invention, the antioxidant comprises the following components in parts by weight:
in one embodiment of the present invention, the copper-resistant agent is selected from the group consisting of: n, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
In one embodiment of the present invention, wherein the coupling agent is selected from vinyltris (. beta. -methoxyethoxy) silane (A-172).
In one embodiment of the present invention, wherein the crosslinking sensitizer is selected from one of triallyl isocyanurate (TAIC) and trimethylolpropane trimethacrylate.
In one embodiment of the invention, the crosslinking agent is selected from dicumyl peroxide (DCP).
The second aspect of the invention provides a preparation method of the 1E-level K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station;
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35 (ML (1+4),100 ℃), and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof;
blending components except the crosslinking agent by using an internal mixer, discharging, extruding and granulating to obtain a master batch;
and mixing the master batch with a cross-linking agent to obtain the 1E-grade K1-class low-smoke zero-halogen vulcanized cross-linked cable insulating material for the AP1000 nuclear power station.
Preferably, the basic granulation adopts a twin-screw granulator, and the four temperature sections in the extrusion granulation process are as follows: the feeding section is 115-125 ℃, the conveying section is 125-135 ℃, the melting section is 135-145 ℃, and the head is 140-150 ℃;
preferably, the master batch and the crosslinking agent adopt hot water to heat a vacuum drum, and the temperature of the vacuum drum is 55 +/-3 ℃.
In a specific embodiment, the components are mixed with the inorganic filler according to the proportion in a high-speed mixer, the mixture is stirred for 3-6 minutes after the temperature reaches 110 ℃, the mixture is discharged and placed, the mixture is primarily blended with resin and auxiliaries except a crosslinking agent for 10-15 minutes by using an internal mixer according to the proportion, and the mixture is extruded and granulated by a double-screw extrusion granulator of Nanjing Ruiya polymer equipment Limited company when the discharged material is hot, so that the master batch is obtained. And mixing the master batch and the cross-linking agent in proportion by using water to heat the vacuum drum for 1 hour to obtain a finished product of the 1E-grade K1 cable insulating material for the AP1000 nuclear power station.
Detailed Description
The inventor of the invention has conducted extensive and intensive research, and through improving the preparation process, the product uses a mixture of ethylene propylene diene monomer (EDPM) and linear ultra-low density polyethylene (VLDPE), a special antioxidant system is selected, the product has excellent long-term thermal aging resistance, the service life of the material exceeds 60 years, and meanwhile, the obtained cable insulation material has very high insulation performance and still maintains good mechanical properties or electrical properties under severe conditions (high-temperature and high-humidity environment). The present invention has been completed based on this finding.
The technical idea of the invention is as follows:
the invention relates to a formula of a 1E-level K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for an AP1000 nuclear power station and a preparation method thereof, belonging to the technical field of new cable materials. The 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for the AP1000 nuclear power station comprises, by weight, 100 parts of base resin, 80-180 parts of reinforcing agent, 3-10 parts of lubricant, 3-15 parts of anti-aging agent, 0.1-0.8 part of copper-resistant agent, 2-8 parts of coupling agent, 3-5 parts of crosslinking agent and 2-5 parts of crosslinking sensitizer. The invention solves the problem that the long-term service life of the existing cable material is less than 60 years under the condition that the service temperature is 90 ℃ in the environment of a nuclear power station. The insulating material has high radiation resistance.
As used herein, the term "comprising" or "includes" means that the various ingredients can be used together in a mixture or composition of the invention. Thus, the terms "consisting essentially of and" consisting of are encompassed by the terms "comprising" or "including".
Various aspects of the invention are described in detail below:
1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for AP1000 nuclear power station
In a first aspect of the invention, the invention provides a 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for an AP1000 nuclear power station, which comprises the following components in parts by weight:
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35 (ML (1+4),100 ℃), and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof.
The product performance completely meets the requirements of 1E-level K1 cables for AP1000 nuclear power stations, is at the international leading level, and can completely replace domestic and foreign products. The concrete points are as follows:
the product uses the mixture of ethylene propylene diene monomer (EDPM) and linear ultra-low density polyethylene (VLDPE), a special antioxidant system is selected, the product has excellent long-term heat aging resistance, and the service life of the material exceeds 60 years;
the cable has excellent anti-irradiation performance, and completely meets the requirement that the cable keeps normal function operation under the harsh nuclear irradiation environment in the containment vessel of the nuclear power station.
In order to better extend the service life and maintain the mechanical and electrical properties under severe conditions, in one embodiment of the present invention, the EDPM in the base resin is an ENB type EDPM.
In order to better prolong the service life and maintain the mechanical property and the electrical property under the severe conditions, in one embodiment of the invention, the anti-aging agent comprises the following components in parts by weight:
in one embodiment of the present invention, wherein the strengthening agent is selected from zinc oxide, calcined kaolin, or a combination thereof. The reinforcing agent may also be any of various reinforcing agents in the art as long as the object of the present invention is not limited.
In one embodiment of the invention, the lubricant is selected from: calcium stearate, zinc stearate, magnesium stearate or polyethylene wax. The lubricant may also be any of various lubricants in the art as long as it does not limit the object of the present invention.
In one embodiment of the present invention, the copper-resistant agent is selected from the group consisting of: n, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine. The copper inhibitor may also be any of those known in the art, as long as it does not limit the object of the present invention.
In one embodiment of the present invention, wherein the coupling agent is selected from vinyltris (. beta. -methoxyethoxy) silane (A-172). The coupling agent may also be any of those in the art as long as it does not limit the object of the present invention.
In one embodiment of the present invention, wherein the crosslinking sensitizer is selected from one of triallyl isocyanurate (TAIC) and trimethylolpropane trimethacrylate. The crosslinking sensitizer may also be any crosslinking sensitizer in the art as long as it does not limit the object of the present invention.
In one embodiment of the invention, the crosslinking agent is selected from dicumyl peroxide (DCP). The crosslinking agent may also be any of those in the art as long as it does not limit the object of the present invention.
Preparation method
The second aspect of the invention provides a preparation method of the 1E-level K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station;
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35%, and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof;
blending components except the crosslinking agent by using an internal mixer, discharging, extruding and granulating to obtain a master batch;
and mixing the master batch with a cross-linking agent to obtain the 1E-grade K1-class low-smoke zero-halogen vulcanized cross-linked cable insulating material for the AP1000 nuclear power station.
Preferably, the basic granulation adopts a twin-screw granulator, and the four temperature sections in the extrusion granulation process are as follows: the feeding section is 115-125 ℃, the conveying section is 125-135 ℃, the melting section is 135-145 ℃, and the head is 140-150 ℃;
preferably, the master batch and the crosslinking agent adopt hot water to heat a vacuum drum, and the temperature of the vacuum drum is 55 +/-3 ℃.
In a specific embodiment, the components are mixed with the inorganic filler according to the proportion in a high-speed mixer, the mixture is stirred for 3-6 minutes until the temperature reaches 110 +/-5 ℃, zinc stearate is added, the mixture is placed for discharging, the mixture is primarily blended with resin and auxiliaries except the cross-linking agent according to the proportion by using an internal mixer for 10-15 minutes for discharging, and the discharged material is extruded and granulated by a double-screw extrusion granulator of Nanjing Ruiya polymer equipment Limited company while the discharged material is hot, so that the master batch is obtained. And mixing the master batch and the cross-linking agent in proportion by using a water heating vacuum drum for 1 +/-0.1 hour to obtain a finished product of the 1E-grade K1 cable insulating material for the AP1000 nuclear power station.
PREFERRED EMBODIMENTS FOR CARRYING OUT THE INVENTION
The technical purpose of the invention is implemented by the following technical scheme: the low-smoke halogen-free cable insulating material for the AP1000 nuclear power station is characterized in that the name and the amount of each component are as follows:
the base resin is selected from: the ethylene propylene diene monomer (EDPM) and the linear ultra-low density polyethylene (VLDPE) are a mixture, the resin must contain ethylene propylene rubber, the ethylene propylene rubber is formed by copolymerizing monoolefine ethylene, propylene and a third monomer, and the ethylene propylene rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability and electrical property. The ethylene propylene rubber product can be used for a long time at 120 ℃ and can be used for a short time or intermittently at 150-200 ℃. The addition of proper antioxidant can raise its use temperature. Ethylene-propylene-diene rubbers crosslinked with peroxides can be used under more severe conditions. Linear ultra low density polyethylene (VLDPE) has high tensile strength, excellent flexibility, chemical resistance and radiation resistance. Wherein the melt index of the linear ultra low density polyethylene (VLDPE) is: 0.5-5 g/10 min. EDPM must be ENB type, Mooney viscosity 20-35 (ML (1+4),100 ℃), ethylene content 55-70%.
The reinforcing agent is a combination of zinc oxide and calcined argil. The zinc oxide is used as a common rubber vulcanization accelerator and has the characteristics of large specific surface area and high activity. The rubber can also be reinforced, so that the rubber has good corrosion resistance and excellent mechanical properties of crack resistance. After the pottery clay is calcined and activated, the acting force between the pottery clay and rubber molecules is increased, so that the pottery clay has certain reinforcing performance.
The lubricant is as follows: one or a combination of calcium stearate, zinc stearate, magnesium stearate or polyethylene wax.
The anti-aging agent is selected from: a combination of 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW) and 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD). 2, 6-di-tert-butyl-p-cresol (age resister 264) adopts a German imported product, has excellent thermal stability and long-term heat aging resistance, and can effectively improve the long-term heat aging resistance of the material when being used together with hindered phenol antioxidant CA; the anti-aging agent AW has excellent oxidation resistance, ozone resistance, heat resistance, weather resistance and flex crack resistance to the material, and can greatly improve the radiation resistance of the material; the antioxidant RD is combined with the excellent rubber antioxidant, and can prevent and delay the oxidation and aging of rubber.
The more preferable anti-aging agent 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW) is produced by Jiangsu Huada chemical group limited company. 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer (RD) is produced by Jiangsu san ao chemical technology Co.
The copper resisting agent is selected from: n, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (MD1024)
The copper inhibitor has strong capability of inhibiting the catalytic aging of heavy metal ions, has obvious copper harm resistance effect, good compatibility with resin and good dispersibility, and has double functions of oxidation resistance and copper resistance.
A more preferred copper resistant agent is Irganox MD-1024 from Ciba Switzerland.
The coupling agent is vinyl tri (beta-methoxyethoxy) silane (A-172).
The coupling agent A-172 can improve the coupling between inorganic surface resins. The electrical properties and mechanical strength of the mineral filled elastomer are improved, and particularly the properties are more remarkable in a wet state.
More preferred vinyltris (. beta. -methoxyethoxy) silane (A-172) is available from Degussa.
The crosslinking agent is dicumyl peroxide (DCP). The crosslinking agent dicumyl peroxide (DCP), which is an inexpensive and readily available crosslinking agent, is preferred in consideration of the use properties.
More preferably dicumyl peroxide (DCP) is produced by Shanghai Gaoqiao petrochemical company.
The crosslinking sensitizer is one of triallyl isocyanurate (TAIC) and trimethylolpropane trimethacrylate.
A more preferred crosslinking sensitizer is TAIC crosslinking sensitizer of Shanghai Fanglida Chemicals, Inc.
The formula and the preparation method of the 1E-level K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for the AP1000 nuclear power station comprise the following steps:
mixing inorganic fillers according to a proportion in a high-speed mixer at a high speed until the temperature reaches 110 ℃, adding zinc stearate, stirring for 3-6 minutes, discharging, placing, preliminarily blending the inorganic fillers with resin and auxiliaries except the cross-linking agent in a mixer according to a proportion for 10-15 minutes, discharging, and extruding and granulating by a double-screw extrusion granulator when the discharged materials are hot to obtain the master batch. The master batch and the cross-linking agent are mixed for 1 hour by heating a vacuum drum with water according to a proportion.
Preferably, the twin-screw granulator used has four temperature sections in the extrusion granulation process: the feeding section is 115-125 ℃, the conveying section is 125-135 ℃, the melting section is 135-145 ℃, and the machine head is 140-150 ℃. The vacuum drum temperature was 55 ℃.
More preferably, the twin-screw extrusion granulator is manufactured by Nanjing Ruiya Polymer Equipment Co.
Most preferred embodiments
In a more preferred embodiment of the invention, the 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station comprises the following components in parts by weight:
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35 (ML (1+4),100 ℃), and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof.
In order to better extend the service life and maintain the mechanical and electrical properties under severe conditions, in one embodiment of the present invention, the EDPM in the base resin is an ENB type EDPM.
In order to better prolong the service life and maintain the mechanical property and the electrical property under the severe conditions, in one embodiment of the invention, the anti-aging agent comprises the following components in parts by weight:
preferably, wherein the strengthening agent is selected from the group consisting of zinc oxide and calcined kaolin in combination:
30-60 parts of zinc oxide;
and 50-90 parts of calcined argil.
The formula and the preparation method of the 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulating material for the AP1000 nuclear power station obtained in the most preferred embodiment of the invention have the advantages that the performance completely meets the requirements of the 1E-grade K1-class cable for the AP1000 nuclear power station, the product is in the international leading level, and the product can completely replace products at home and abroad. It has the following advantages:
the product uses the mixture of ethylene propylene diene monomer (EDPM) and linear ultra-low density polyethylene (VLDPE), a special antioxidant system is selected, the product has excellent long-term heat aging resistance, and the service life of the material exceeds 60 years;
the cable has excellent anti-irradiation performance, and completely meets the requirement that the cable keeps normal function operation under the harsh nuclear irradiation environment in the containment vessel of the nuclear power station;
besides meeting the requirements, the formula of the insulating material with the optimal formula has good synergy, and the insulating material has particularly excellent mechanical property and electrical property stability under the conditions of high temperature and high humidity, and avoids the phenomenon of assistant precipitation.
Unless otherwise specified, various starting materials of the present invention are commercially available; or prepared according to conventional methods in the art. Unless defined or stated otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention.
Other aspects of the invention will be apparent to those skilled in the art in view of the disclosure herein.
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The experimental methods of the following examples, which are not specified under specific conditions, are generally determined according to national standards. If there is no corresponding national standard, it is carried out according to the usual international standards, to the conventional conditions or to the conditions recommended by the manufacturer. Unless otherwise indicated, all parts are parts by weight, all percentages are percentages by weight, and the molecular weight of the polymer is the number average molecular weight.
Unless defined or stated otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention.
Example 1.
The name and the weight part of each component are as follows:
the preparation method of the invention comprises the following process steps:
mixing inorganic fillers according to a proportion in a high-speed mixer at a high speed until the temperature reaches 110 ℃, adding zinc stearate, stirring for 3-6 minutes, discharging, placing, preliminarily blending the inorganic fillers with resin and auxiliaries except the cross-linking agent in a mixer according to a proportion for 10-15 minutes, discharging, and extruding and granulating the mixture by a twin-screw extrusion granulator of Nanjing Ruiya polymer equipment Limited company while the material is hot to obtain the master batch. And mixing the master batch and the cross-linking agent in proportion by using water to heat a vacuum drum for 1 hour to obtain a finished product. The four temperature stages in the granulation process are: the feeding section is 115-125 ℃, the conveying section is 125-135 ℃, the melting section is 135-145 ℃, and the machine head is 140-150 ℃. The vacuum drum temperature was 55 ℃.
The product of example 1 was tested for performance testing, and the values of each property are shown in table 1:
table 1 example 1 product performance test results:
example 2
The name and the weight part of each component are as follows:
the preparation method of the cable material is the same as that of the embodiment 1.
The product of example 2 was tested for performance testing, and the values of each property are shown in table 2:
table 2 example 2 product performance test results
Example 3
The name and the weight part of each component are as follows:
the preparation method of the cable material is the same as that of the embodiment 1.
The product of example 3 was tested for property measurements, each property value being shown in table 3:
table 3 example 3 product performance test results
Example 4
The name and the weight part of each component are as follows:
the preparation method of the cable material is the same as that of the embodiment 1.
The product of example 2 was tested for performance testing, and the values of each property are shown in table 2:
table 4 example 4 product performance test results
Example 5
The name and the weight part of each component are as follows:
the preparation method of the cable material is the same as that of the embodiment 1.
The product of example 5 was tested for property measurements, each property value being shown in table 5:
table 5 example 5 product performance test results
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the scope of the invention, which is defined by the claims appended hereto, and any other technical entity or method that is encompassed by the claims as broadly defined herein, or equivalent variations thereof, is contemplated as being encompassed by the claims.
All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the above disclosure, and equivalents also fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for an AP1000 nuclear power station comprises the following components in parts by weight:
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35 (ML (1+4),100 ℃), and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof.
2. The 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station as claimed in claim 1, which comprises the following components in parts by weight:
the base resin is selected from: ethylene propylene diene monomer (EDPM), a mixture of linear ultra low density polyethylene (VLDPE);
the base resin comprises the following components in parts by weight:
50-80 parts of ethylene propylene diene monomer (EDPM);
20-50 parts of linear ultra-low density polyethylene (VLDPE);
the linear ultra low density polyethylene (VLDPE) has a melt index of: 0.5-5 g/10 min;
the Mooney viscosity of the EDPM is 20-35%, and the ethylene content is 55-70%;
the anti-aging agent is 2, 6-di-tert-butyl-p-cresol (anti-aging agent 264), 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane (antioxidant CA), 6-ethoxy-2, 2, 4-trimethyl-1, 2-dihydroquinoline (anti-aging agent AW), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (anti-aging agent RD) or a combination thereof.
3. The class 1E grade K1 low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station as claimed in claim 1 or 2, wherein the EDPM in the base resin is ENB type EDPM.
4. The class 1E low smoke zero halogen vulcanized cross-linked cable insulation material of K1 class for the AP1000 nuclear power station as defined in claim 1 or 2, wherein the reinforcing agent is selected from zinc oxide, calcined clay or a combination thereof;
preferably, wherein the strengthening agent is selected from the group consisting of zinc oxide and calcined kaolin in combination:
30-60 parts of zinc oxide;
and 50-110 parts of calcined argil.
5. The class 1E low smoke zero halogen vulcanized crosslinked cable insulation material of class K1 for AP1000 nuclear power plant as claimed in claim 1 or 2, wherein the lubricant is selected from: calcium stearate, zinc stearate, magnesium stearate or polyethylene wax.
6. The 1E-grade K1-class low-smoke halogen-free vulcanized crosslinked cable insulation material for the AP1000 nuclear power station as claimed in claim 1 or 2, wherein the anti-aging agent comprises the following components in parts by weight:
7. the class 1E low-smoke zero-halogen vulcanized crosslinked cable insulation material of K1 class for the AP1000 nuclear power station as claimed in claim 1 or 2, wherein the copper-resistant agent is selected from: n, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
8. The class 1E low-smoke halogen-free vulcanized crosslinked cable insulation material of K1 class for the AP1000 nuclear power station as claimed in claim 1 or 2, wherein the coupling agent is selected from vinyltris (β -methoxyethoxy) silane (A-172).
9. The class 1E low-smoke halogen-free vulcanized crosslinked cable insulation material of K1 class for the AP1000 nuclear power station as claimed in claim 1 or 2, wherein,
the crosslinking sensitizer is selected from one of triallyl isocyanurate (TAIC) and trimethylolpropane trimethacrylate; or,
the crosslinking agent is selected from dicumyl peroxide (DCP).
10. Preparation method of 1E-grade K1-type low-smoke halogen-free vulcanized crosslinked cable insulation material for AP1000 nuclear power station as claimed in claim 1 or 2
Providing a component according to claim 1 or 2;
blending components except the crosslinking agent by using an internal mixer, discharging, extruding and granulating to obtain a master batch;
and mixing the master batch with a cross-linking agent to obtain the 1E-grade K1-class low-smoke zero-halogen vulcanized cross-linked cable insulating material for the AP1000 nuclear power station.
Preferably, the basic granulation adopts a twin-screw granulator, and the four temperature sections in the extrusion granulation process are as follows: the feeding section is 115-125 ℃, the conveying section is 125-135 ℃, the melting section is 135-145 ℃, and the head is 140-150 ℃;
preferably, the master batch and the crosslinking agent adopt hot water to heat a vacuum drum, and the temperature of the vacuum drum is 55 +/-3 ℃.
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| WO2016187755A1 (en) * | 2015-05-22 | 2016-12-01 | Dow Global Technologies Llc | Processes for preparing cables with crosslinked insulation layer and cables for same |
| CN107722469A (en) * | 2017-09-07 | 2018-02-23 | 新宇电缆集团股份有限公司 | Extraordinary adiabatic cable insulation of a kind of new energy and preparation method thereof |
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