CN115418056A - High-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables and preparation method thereof - Google Patents
High-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables and preparation method thereof Download PDFInfo
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- CN115418056A CN115418056A CN202210675111.7A CN202210675111A CN115418056A CN 115418056 A CN115418056 A CN 115418056A CN 202210675111 A CN202210675111 A CN 202210675111A CN 115418056 A CN115418056 A CN 115418056A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 192
- 229920000181 Ethylene propylene rubber Polymers 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 40
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 35
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000945 filler Substances 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000002250 absorbent Substances 0.000 claims abstract description 26
- 230000002745 absorbent Effects 0.000 claims abstract description 26
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 24
- 229920001577 copolymer Polymers 0.000 claims abstract description 23
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 21
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 20
- SFVFIFLLYFPGHH-UHFFFAOYSA-M stearalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SFVFIFLLYFPGHH-UHFFFAOYSA-M 0.000 claims abstract description 20
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 17
- 239000006229 carbon black Substances 0.000 claims abstract description 17
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 17
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000008117 stearic acid Substances 0.000 claims abstract description 17
- 239000011787 zinc oxide Substances 0.000 claims abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 87
- 238000002156 mixing Methods 0.000 claims description 48
- 238000001816 cooling Methods 0.000 claims description 24
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 claims description 7
- 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 7
- 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 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 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 5
- 239000000843 powder Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000001993 wax Substances 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 3
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 25
- 230000008859 change Effects 0.000 description 14
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 7
- 239000004568 cement Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000011031 large-scale manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000001000 micrograph Methods 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- IPJGAEWUPXWFPL-UHFFFAOYSA-N 1-[3-(2,5-dioxopyrrol-1-yl)phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C1=CC=CC(N2C(C=CC2=O)=O)=C1 IPJGAEWUPXWFPL-UHFFFAOYSA-N 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 2
- 241001441571 Hiodontidae Species 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- HCZBMENVWKFZDJ-UHFFFAOYSA-N 3-trimethylsilylpropane-1-thiol Chemical compound C[Si](C)(C)CCCS HCZBMENVWKFZDJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000307 polymer substrate Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- 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
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- 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 discloses a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables and a preparation method thereof, wherein the raw material formula comprises the following components: 30-90 parts of ethylene propylene rubber, 10-40 parts of ethylene-octene copolymer, 6-10 parts of zinc oxide, 0.5-1 part of stearic acid, 70-100 parts of calcined argil, 10-30 parts of precipitated white carbon black, 0.5-1.5 parts of coupling agent, 10-30 parts of nano montmorillonite, 30-50 parts of filler, 3-5 parts of octadecyl dimethyl benzyl ammonium chloride, 5-8 parts of processing aid, 5-8 parts of rubber-based paraffin oil, 0.8-2.5 parts of anti-aging agent, 0.3-0.8 part of ultraviolet absorbent, 1-3 parts of titanium dioxide, 1-3 parts of barium sulfate, 2-4 parts of dicumyl peroxide and 2-4 parts of co-vulcanizing agent. Has excellent insulating electrical, mechanical and high temperature aging resistance.
Description
Technical Field
The invention belongs to the technical field of wires and cables, and particularly relates to high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables and a preparation method thereof.
Background
The ethylene propylene rubber belongs to carbon chain saturated nonpolar rubber, has very stable performance, excellent ozone aging resistance, good heat aging resistance, excellent weather aging resistance, excellent water resistance and excellent electrical insulation performance, and is a preferred base material of the rubber sleeve cable insulation material.
With the development of the industrial technology, under the condition that the specification of the cable is not changed, the transmission power of the cable is increased and the current-carrying capacity of the conductor is increased, so that more heat is necessarily released, the working temperature of the cable is higher, and the insulating material with higher temperature resistance is needed. The temperature resistance of common insulating materials such as polyvinyl chloride insulating materials is 70 ℃, the temperature resistance of crosslinked polyethylene insulating materials and ethylene propylene rubber insulating materials is 90 ℃, and the use requirements under the environment with higher working temperature cannot be met. In order to meet the use requirements in a high-temperature environment, part of enterprises are developing high-temperature-resistant ethylene propylene rubber materials, in order to improve the performance of ethylene propylene rubber, polyacrylonitrile with partial polarity and an antistatic agent are added into some high-temperature-resistant ethylene propylene rubber materials in the prior art, and the high-temperature-resistant ethylene propylene rubber materials can only be used as cable sheath materials, and the electrical properties can not meet the requirements when the high-temperature-resistant ethylene propylene rubber materials are used as insulating materials. In addition, in the prior art, the addition amount of carbon black in some high-temperature resistant ethylene propylene rubber materials is large, and the electrical insulation performance of the high-temperature resistant ethylene propylene rubber materials cannot meet the requirements of wire and cable insulation materials.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables and the preparation method thereof.
The technical scheme adopted for solving the technical problems of the invention is to provide a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials:
wherein, zinc oxide and stearic acid are used as active agents, rubber-based paraffin oil is used as a plasticizer, and dicumyl peroxide (DCP) is used as a vulcanizing agent.
Preferably, the ethylene-propylene rubber has an ethylene content of 40wt% to 75wt%, and a Mooney viscosity
20 to 65 percent, and the content of the third monomer ethylidene norbornene is 0.5 to 8 percent by weight.
Preferably, the ethylene octene copolymer has a melt index of 0.5 to 1.0g/min at 190 ℃ under a test condition of 2.16kg load, a melting temperature of 55 to 65 ℃, and a Mooney viscosity
Is 20-35.
Preferably, the particle size of the calcined clay is 4000 to 10000 meshes.
Preferably, the specific surface area of the precipitated silica is 50-200m 2 /g。
Preferably, the coupling agent is one or more of vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (beta-methoxyethoxy) silane, bis (gamma-triethoxysilylpropyl) -tetrasulfide, gamma-methacryloxypropyltrimethoxysilane, gamma-mercaptopropyltrimethylsilane, gamma-mercaptopropyltriethoxysilane and gamma-aminopropyltriethoxysilane.
Preferably, the nano montmorillonite is one or more of calcium-based montmorillonite, sodium-based montmorillonite and magnesium-based montmorillonite.
Preferably, the filler has a particle size of 3000 to 10000 mesh.
Preferably, the rubber-based paraffin oil has a flash point of 300 to 400 ℃ and a kinematic viscosity of 400 to 500mm at 40 ℃ 2 /s。
Preferably, the antioxidant is one or more of antioxidant 445, antioxidant MB, antioxidant RD, antioxidant 300 and antioxidant 1010.
Preferably, the ultraviolet absorbent is one or more of ultraviolet absorbent UV-9, ultraviolet absorbent UV-531, ultraviolet absorbent UV-329 and ultraviolet absorbent UV-326.
Preferably, the co-vulcanizing agent is one or more of triallyl isocyanurate (TAIC), triallyl cyanurate (TAC), N' -m-phenylene bismaleimide (HVA-2) and trimethylolpropane trimethacrylate (TMPTMA).
Preferably, the filler is one or more of talcum powder, light calcium carbonate and Qiangwei powder;
the processing aid is 58# fully refined paraffin wax and/or polyethylene wax.
The invention also provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which comprises the following steps:
(1) Adding ethylene propylene rubber and ethylene octene copolymer into an internal mixer, and pressurizing and mixing for 0.5-10 minutes;
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 2-10 minutes at the temperature of 40-50 ℃;
(3) Adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of an internal mixer, and pressurizing and mixing;
(4) Discharging the rubber to an open mill when the temperature of the rubber in the step (3) is raised to 100-115 ℃, and further mixing for 1-10 minutes on the open mill;
(5) Cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for filtering, and cooling the filtered rubber material in a shade place;
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is raised to 80-85 ℃, and discharging rubber when the temperature is raised to 95-100 ℃;
(7) Further mixing the rubber material obtained in the step (6) on an open mill for 2-3 minutes, uniformly mixing, cutting the rubber and rolling;
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The precipitated white carbon black, the nano-montmorillonite, the octadecyl dimethyl benzyl ammonium chloride and the calcined argil have a synergistic reinforcing effect in the ethylene propylene rubber insulating glue, wherein the nano-montmorillonite is of a layered structure, and the nano-montmorillonite and the octadecyl dimethyl benzyl ammonium chloride can form an intercalated structure which is tightly combined, so that the tensile strength of the ethylene propylene rubber insulating glue is favorably enhanced.
In order to balance the high temperature resistance, the mechanical property and the insulating electrical property of the high temperature resistant and high strength ethylene propylene rubber insulating cement for wires and cables, the present embodiment systematically studies and experimentally finds the influence of the formula of the insulating cement, the interaction relationship among different raw materials and the interaction relationship among materials on the properties: the ethylene-propylene rubber and the ethylene-octene copolymer are high-saturability polymer base materials and have similar structures, and have excellent high-temperature aging resistance and high strength after high-temperature vulcanization; the calcined argil can endow the material with excellent electrical insulation property and mechanical property; the matching of the nano montmorillonite and the octadecyl dimethyl benzyl ammonium chloride can ensure that the powder material is combined with the polymer substrate more tightly, and the material can have excellent aging resistance; the synergistic cooperation of the ultraviolet absorbent, the titanium dioxide and the barium sulfate can endow the material with excellent ultraviolet resistance; the cooperation of the high-efficiency anti-aging agent can endow the material with excellent high-temperature aging resistance.
The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity more than or equal to 10 16 Ω·cm。
(2) Has excellent mechanical performance, tensile strength not less than 9MPa and elongation at break
≥400％。
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) Has excellent high temperature aging resistance, and the change rate of tensile strength and the change rate of elongation at break are within plus or minus 30 percent after heat treatment at 150 ℃ for 7 days.
The preparation method disclosed by the invention is simple in operation method, low in cost, universal and easy for large-scale production.
Drawings
FIG. 1 is a scanning electron microscope image of the high temperature resistant high strength ethylene propylene rubber insulating rubber for electric wire and cable in example 2 of the present invention magnified 200 times;
FIG. 2 is a 2000 times magnified scanning electron microscope image of the high temperature resistant high strength ethylene propylene rubber insulating cement for electric wire and cable in example 2 of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
The embodiment provides a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials in formula:
among them, zinc oxide and stearic acid were used as the active agents, rubber-based paraffin oil was used as the plasticizer, and dicumyl peroxide (DCP) was used as the vulcanizing agent.
The embodiment also provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which comprises the following steps:
(1) Adding ethylene propylene rubber and ethylene octene copolymer into an internal mixer, and pressurizing and mixing for 0.5-10 minutes;
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 2-10 minutes at the temperature of 40-50 ℃;
(3) Adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of an internal mixer, and pressurizing and mixing;
(4) Discharging the rubber to an open mill when the temperature of the rubber in the step (3) is raised to 100-115 ℃, and further mixing for 1-10 minutes on the open mill;
(5) Cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for filtering, and cooling the filtered rubber material in a shade place;
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is raised to 80-85 ℃, and discharging rubber when the temperature is raised to 95-100 ℃;
(7) Further mixing the rubber material obtained in the step (6) on an open mill for 2-3 minutes, uniformly mixing, cutting the rubber, and rolling;
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables in the embodiment has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity not less than 10 16 Ω·cm。
(2) Has excellent mechanical performance, tensile strength not less than 9MPa and elongation at break not less than 400%.
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) Has excellent high temperature aging resistance, and the change rate of tensile strength and the change rate of elongation at break are within plus or minus 30 percent after heat treatment at 150 ℃ for 7 days.
The preparation method of the embodiment is simple in operation method, low in cost, universal and easy for large-scale production.
Example 2
The embodiment provides a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials in formula:
80 parts of ethylene propylene rubber, 20 parts of ethylene-octene copolymer, 8 parts of zinc oxide, 0.8 part of stearic acid, 90 parts of calcined argil, 15 parts of precipitated white carbon black, 1.2 parts of coupling agent, 20 parts of nano montmorillonite, 40 parts of filler, 4 parts of octadecyl dimethyl benzyl ammonium chloride, 6.5 parts of processing aid, 8 parts of rubber-based paraffin oil, 2 parts of anti-aging agent, 0.5 part of ultraviolet absorbent, 2 parts of titanium dioxide, 1 part of barium sulfate, 3 parts of DCP and 4 parts of auxiliary vulcanizing agent.
Among them, zinc oxide and stearic acid were used as the active agents, rubber-based paraffin oil was used as the plasticizer, and dicumyl peroxide (DCP) was used as the vulcanizing agent.
In this example, the ethylene content of the ethylene-propylene rubber is 40wt%, and the Mooney viscosity thereof is
The content of ethylidene norbornene as the third monomer was 4% by weight at 20.
In the present example, the ethylene-octene copolymer had a melt index of 0.5g/min, a melting temperature of 65 ℃ and a Mooney viscosity at 190 ℃ under the test conditions of a load of 2.16kg
Is 20.
In this example, the calcined kaolin had a particle size of 4000 mesh.
It should be noted that the specific surface area of precipitated silica in this example is 200m 2 /g。
In this example, the coupling agent was vinyltriethoxysilane.
It should be noted that the nano montmorillonite in this embodiment is calcium-based montmorillonite.
In this example, the particle size of the filler was 5000 mesh.
In this example, the flash point of the rubber-based paraffin oil was 300 ℃ and the kinematic viscosity at 40 ℃ was 500mm 2 /s。
In the present embodiment, the antioxidant is antioxidant 445.
In this embodiment, the ultraviolet absorber is an ultraviolet absorber UV-9.
In this example, the co-vulcanizing agent was Triallylisocyanurate (TAIC).
It should be noted that, in this embodiment, the filler is talc powder;
the processing aid is 58# fully refined paraffin.
The embodiment provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which specifically comprises the following steps:
(1) And adding the ethylene-propylene rubber and the ethylene-octene copolymer into an internal mixer, and pressurizing and mixing for 30 seconds.
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 4 minutes at the temperature of 40 ℃.
(3) And (3) adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of an internal mixer, and carrying out pressure mixing.
(4) And (4) when the temperature of the rubber material in the step (3) is raised to 115 ℃, discharging the rubber material to an open mill, and further mixing for 1 minute on the open mill.
(5) And (4) cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for filtering the rubber material, and cooling the filtered rubber material in a shade place. Wherein, the filter screen of the rubber filter head adopts a three-layer structure (the three layers of the filter screen are respectively 80 meshes, 160 meshes and 80 meshes).
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is raised to 85 ℃, and discharging rubber when the temperature is raised to 95 ℃.
(7) And (4) further mixing the rubber material obtained in the step (6) on an open mill for 2 minutes, uniformly mixing, cutting the rubber, and rolling.
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables in the embodiment has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity not less than 10 16 Ω·cm。
(2) Has excellent mechanical property, the tensile strength is more than or equal to 9MPa, and the elongation at break is more than or equal to 400 percent.
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) Has excellent high temperature aging resistance, and the change rate of tensile strength and the change rate of elongation at break are within plus or minus 30 percent after heat treatment at 150 ℃ for 7 days.
The preparation method of the embodiment is simple in operation method, low in cost, universal and easy for large-scale production.
Fig. 1 is a scanning electron microscope image of the high temperature resistant high strength ethylene propylene rubber insulation rubber for the wire and cable magnified 200 times, and fig. 2 is a scanning electron microscope image of the high temperature resistant high strength ethylene propylene rubber insulation rubber for the wire and cable magnified 2000 times. The precipitated white carbon black, the nano-montmorillonite, the octadecyl dimethyl benzyl ammonium chloride and the calcined argil have a synergistic reinforcing effect in the ethylene-propylene rubber insulating cement, wherein the nano-montmorillonite is of a layered structure, and the nano-montmorillonite and the octadecyl dimethyl benzyl ammonium chloride can form an intercalated structure which is tightly combined, so that the tensile strength of the ethylene-propylene rubber insulating cement is favorably enhanced.
Referring to the data in table 1, in order to balance the high temperature resistance, the mechanical property and the insulating electrical property of the high temperature resistant and high strength ethylene propylene rubber insulating cement for electric wires and cables, the present embodiment systematically studies and experimentally finds out the influence of the formula of the insulating cement, the interaction relationship among different raw materials and the interaction relationship among materials on the properties: the ethylene-propylene rubber and the ethylene-octene copolymer are high-saturability polymer base materials and have similar structures, and have excellent high-temperature aging resistance and high strength after high-temperature vulcanization in combination; the calcined argil can endow the material with excellent electrical insulation performance and mechanical property; the matching of the nano montmorillonite and the octadecyl dimethyl benzyl ammonium chloride can ensure that the powder material is combined with the polymer base material more tightly, and the material can have excellent aging resistance; the synergistic cooperation of the ultraviolet absorbent, the titanium dioxide and the barium sulfate can endow the material with excellent ultraviolet resistance; the cooperation of the high-efficiency anti-aging agent can endow the material with excellent high-temperature aging resistance.
Example 3
The embodiment provides a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials in formula:
90 parts of ethylene propylene rubber, 15 parts of ethylene-octene copolymer, 6 parts of zinc oxide, 1 part of stearic acid, 80 parts of calcined argil, 10 parts of precipitated white carbon black, 0.5 part of coupling agent, 30 parts of nano montmorillonite, 30 parts of filler, 5 parts of octadecyl dimethyl benzyl ammonium chloride, 8 parts of processing aid, 5 parts of rubber-based paraffin oil, 1.5 parts of anti-aging agent, 0.5 part of ultraviolet absorbent, 1 part of titanium dioxide, 2 parts of barium sulfate, 4 parts of DCP and 3 parts of vulcanizing aid.
The embodiment provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for electric wires and cables,
in this example, the ethylene content of the ethylene-propylene rubber is 50wt%, and the Mooney viscosity thereof is
30, the content of the third monomer, ethylidene norbornene, was 0.5% by weight.
In the present example, the ethylene-octene copolymer had a melt index of 1.0g/min, a melting temperature of 60 ℃ and a Mooney viscosity at 190 ℃ under the test conditions of a load of 2.16kg
Is 35.
In this example, the calcined kaolin had a particle size of 10000 mesh.
In addition, the specific surface area of precipitated silica in this example is 50m 2 /g。
In the present embodiment, the coupling agent is vinyltrimethoxysilane and vinyltris (β -methoxyethoxy) silane, and the mass ratio of the two is 1.
It should be noted that the nano montmorillonite in this embodiment is sodium montmorillonite.
In this example, the particle size of the filler was 6000 mesh.
In this example, the flash point of the rubber-based paraffin oil was 350 ℃ and the kinematic viscosity at 40 ℃ was 450mm 2 /s。
In the present example, the antioxidant is antioxidant MB.
In this embodiment, the ultraviolet absorber is an ultraviolet absorber UV-531.
In this example, the co-vulcanizing agent is triallyl cyanurate (TAC).
It should be noted that, in this embodiment, the filler is talc powder;
the processing aid is 58# fully refined paraffin.
The embodiment provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which specifically comprises the following steps:
(1) And adding the ethylene-propylene rubber and the ethylene-octene copolymer into an internal mixer, and pressurizing and mixing for 10min.
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 10 minutes at the temperature of 50 ℃.
(3) And (3) adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of the internal mixer, and pressurizing and mixing.
(4) And (4) discharging the rubber material to the open mill when the temperature of the rubber material in the step (3) is raised to 100 ℃, and further mixing for 2 minutes on the open mill.
(5) And (4) cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for filtering the rubber material, and cooling the filtered rubber material in a shade place. Wherein, the filter screen of the rubber filter head adopts a three-layer structure (the three layers of the filter screen are respectively 80 meshes, 160 meshes and 80 meshes).
(6) And adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is raised to 82 ℃, and discharging rubber when the temperature is raised to 96 ℃.
(7) And (5) further mixing the rubber material obtained in the step (6) on an open mill for 3 minutes, uniformly mixing, cutting the rubber material, and rolling.
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The high-temperature-resistant high-strength ethylene propylene rubber insulating glue for the wires and the cables in the embodiment has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity not less than 10 16 Ω·cm。
(2) Has excellent mechanical performance, tensile strength not less than 9MPa and elongation at break not less than 400%.
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) Has excellent high temperature aging resistance, and the change rate of tensile strength and the change rate of elongation at break are within plus or minus 30 percent after heat treatment at 150 ℃ for 7 days.
The preparation method of the embodiment is simple in operation method, low in cost, universal and easy for large-scale production.
Example 4
The embodiment provides a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials in formula:
30 parts of ethylene propylene rubber, 10 parts of ethylene-octene copolymer, 10 parts of zinc oxide, 0.5 part of stearic acid, 70 parts of calcined argil, 20 parts of precipitated white carbon black, 1.5 parts of coupling agent, 10 parts of nano montmorillonite, 50 parts of filler, 3 parts of octadecyl dimethyl benzyl ammonium chloride, 5 parts of processing aid, 6 parts of rubber-based paraffin oil, 0.8 part of anti-aging agent, 0.3 part of ultraviolet absorbent, 3 parts of titanium dioxide, 3 parts of barium sulfate, 2 parts of DCP and 2 parts of auxiliary vulcanizing agent.
In this example, the ethylene content of the ethylene-propylene rubber was 75wt%, and the Mooney viscosity thereof was set to be
The content of ethylidene norbornene as the third monomer was 8% by weight for 65.
In the present example, the ethylene-octene copolymer had a melt index of 0.8g/min, a melting temperature of 55 ℃ and a Mooney viscosity at 190 ℃ under the test conditions of a load of 2.16kg
Is 25.
In this example, the particle size of the calcined clay was 5000 mesh.
In addition, the specific surface area of precipitated silica in this example is 170m 2 /g。
In this example, the coupling agent is bis (γ -triethoxysilylpropyl) -tetrasulfide.
It should be noted that in this embodiment, the nano montmorillonite is sodium-based montmorillonite and magnesium-based montmorillonite, and the mass ratio of the two is 2.
In this example, the particle size of the filler was 10000 mesh.
In this example, the flash point of the rubber-based paraffin oil was 400 ℃ and the kinematic viscosity at 40 ℃ was 400mm 2 /s。
In the present embodiment, the antioxidant is antioxidant RD and antioxidant 300, and the mass ratio of the antioxidant RD to the antioxidant 300 is 2.
In the present embodiment, the ultraviolet absorber is the ultraviolet absorber UV-329.
In this example, the co-vulcanizing agent was N, N' -m-phenylene bismaleimide (HVA-2).
In the present embodiment, the filler is light calcium carbonate;
the processing aid is 58# fully refined paraffin and polyethylene wax, and the mass ratio is 5.
The embodiment provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which specifically comprises the following steps:
(1) And adding the ethylene-propylene rubber and the ethylene-octene copolymer into an internal mixer, and pressurizing and mixing for 5min.
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 6 minutes at the temperature of 45 ℃.
(3) And (3) adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of the internal mixer, and pressurizing and mixing.
(4) And (4) when the temperature of the rubber material in the step (3) is raised to 115 ℃, discharging the rubber material to an open mill, and further mixing for 10 minutes on the open mill.
(5) And (5) cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for rubber filtering, and cooling the filtered rubber material in a shade place. Wherein, the filter screen of the rubber filter head adopts a three-layer structure (the three layers of the filter screen are respectively 80 meshes, 160 meshes and 80 meshes).
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is increased to 80 ℃, and discharging rubber when the temperature is increased to 100 ℃.
(7) And (4) further mixing the rubber material obtained in the step (6) on an open mill for 2.5 minutes, uniformly mixing, cutting the rubber, and rolling.
(8) And (3) passing the coiled rubber compound through a three-roll calender, an eight-roll cooling device and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables in the embodiment has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity more than or equal to 10 16 Ω·cm。
(2) Has excellent mechanical property, the tensile strength is more than or equal to 9MPa, and the elongation at break is more than or equal to 400 percent.
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) The high-temperature aging resistant steel has excellent high-temperature aging resistance, and the change rate of the tensile strength and the change rate of the elongation at break are within +/-30% after heat treatment at 150 ℃ for 7 days.
The preparation method of the embodiment is simple in operation method, low in cost, universal and easy for large-scale production.
Example 5
The embodiment provides a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials in formula:
60 parts of ethylene propylene rubber, 40 parts of ethylene-octene copolymer, 7 parts of zinc oxide, 0.6 part of stearic acid, 100 parts of calcined argil, 30 parts of precipitated white carbon black, 0.8 part of coupling agent, 25 parts of nano montmorillonite, 35 parts of filler, 3.5 parts of octadecyl dimethyl benzyl ammonium chloride, 7 parts of processing aid, 5.5 parts of rubber-based paraffin oil, 2.5 parts of anti-aging agent, 0.8 part of ultraviolet absorbent, 1.5 parts of titanium dioxide, 1.7 parts of barium sulfate, 2.5 parts of DCP and 2.5 parts of auxiliary vulcanizing agent.
In this example, the ethylene content of the ethylene-propylene rubber is 55wt%, and the Mooney viscosity thereof is
The content of ethylidene norbornene as the third monomer was 6% by weight for 40.
In the present example, the ethylene-octene copolymer had a melt index of 0.7g/min, a melting temperature of 57 ℃ and a Mooney viscosity at 190 ℃ under the test conditions of a 2.16kg load
Is 32.
In this example, the particle size of the calcined clay was 7000 mesh.
In this example, the specific surface area of precipitated silica is 70m 2 /g。
It should be noted that in this embodiment, the coupling agent is γ -methacryloxypropyltrimethoxysilane, γ -mercaptopropyltrimethylsilane, and γ -mercaptopropyltriethoxysilane, and the mass ratio of the three is 1.
It should be noted that in this embodiment, the nano montmorillonite is magnesium-based montmorillonite.
In this example, the particle size of the filler was 7000 mesh.
In this example, the flash point of the rubber-based paraffin oil was 370 ℃ and the kinematic viscosity at 40 ℃ was 420mm 2 /s。
In the present example, the antioxidant is antioxidant 1010.
In this embodiment, the ultraviolet absorber is an ultraviolet absorber UV-326.
In this example, the co-vulcanizing agent was trimethylolpropane trimethacrylate (TMPTMA).
It should be noted that, in this embodiment, the filler is light calcium carbonate and qianwei powder, and the mass ratio is 1;
the processing aid is polyethylene wax.
The embodiment provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which specifically comprises the following steps:
(1) And adding the ethylene-propylene rubber and the ethylene-octene copolymer into an internal mixer, and pressurizing and mixing for 6min.
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 8 minutes at the temperature of 42 ℃.
(3) And (3) adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of an internal mixer, and carrying out pressure mixing.
(4) And (4) when the temperature of the rubber material in the step (3) is raised to 110 ℃, discharging the rubber material to an open mill, and further mixing for 8 minutes on the open mill.
(5) And (4) cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for filtering the rubber material, and cooling the filtered rubber material in a shade place. Wherein, the filter screen of the rubber filter head adopts a three-layer structure (the three layers of the filter screen are respectively 80 meshes, 160 meshes and 80 meshes).
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is raised to 83 ℃, and discharging rubber when the temperature is raised to 97 ℃.
(7) And (5) further mixing the rubber material obtained in the step (6) on an open mill for 2 minutes, uniformly mixing, cutting the rubber material, and rolling.
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables in the embodiment has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity more than or equal to 10 16 Ω·cm。
(2) Has excellent mechanical performance, tensile strength not less than 9MPa and elongation at break not less than 400%.
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) Has excellent high temperature aging resistance, and the change rate of tensile strength and the change rate of elongation at break are within plus or minus 30 percent after heat treatment at 150 ℃ for 7 days.
The preparation method of the embodiment is simple in operation method, low in cost, universal and easy for large-scale production.
Example 6
The embodiment provides a high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables, which comprises the following raw materials in formula:
50 parts of ethylene propylene rubber, 30 parts of ethylene-octene copolymer, 9 parts of zinc oxide, 0.9 part of stearic acid, 75 parts of calcined argil, 25 parts of precipitated white carbon black, 0.7 part of coupling agent, 15 parts of nano montmorillonite, 45 parts of filler, 4.5 parts of octadecyl dimethyl benzyl ammonium chloride, 5.5 parts of processing aid, 7 parts of rubber-based paraffin oil, 1.2 parts of anti-aging agent, 0.4 part of ultraviolet absorbent, 2.5 parts of titanium dioxide, 2.5 parts of barium sulfate, 3.5 parts of DCP and 3.5 parts of vulcanizing aid.
In this example, the ethylene content of the ethylene-propylene rubber is 60wt%, and the Mooney viscosity thereof is
At 35, the content of ethylidene norbornene as the third monomer was 7% by weight.
In the present example, the ethylene-octene copolymer had a melt index of 0.6g/min, a melting temperature of 62 ℃ and a Mooney viscosity at 190 ℃ under the test conditions of a load of 2.16kg
Is 22.
In this example, the calcined kaolin had a particle size of 8000 mesh.
It should be noted that the specific surface area of precipitated silica in this example is 120m 2 /g。
In this example, the coupling agent was γ -aminopropyltriethoxysilane.
It should be noted that in this embodiment, the nano montmorillonite is calcium-based montmorillonite.
In this example, the particle size of the filler was 8000 mesh.
In this example, the flash point of the rubber-based paraffin oil was 320 ℃ and the kinematic viscosity at 40 ℃ was 480mm 2 /s。
In the present embodiment, the antioxidant is the antioxidant 445.
In the present embodiment, the ultraviolet absorbers are the ultraviolet absorber UV-329 and the ultraviolet absorber UV-326, and the mass ratio is 1.
It should be noted that, in this embodiment, the co-vulcanizing agents are triallyl isocyanurate (TAIC) and triallyl cyanurate (TAC), and the mass ratio of the two is 3.
It should be noted that, in this embodiment, the filler is strong flour;
the processing aid is 58# fully refined paraffin.
The embodiment provides a preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables, which specifically comprises the following steps:
(1) And adding the ethylene propylene rubber and the ethylene octene copolymer into an internal mixer, and pressurizing and mixing for 8min.
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 7 minutes at the temperature of 47 ℃.
(3) And (3) adding the uniformly stirred raw materials in the step (2) into the rubber material in the step (1), lowering an upper top plug of the internal mixer, and pressurizing and mixing.
(4) And (4) when the temperature of the rubber material in the step (3) is raised to 112 ℃, discharging the rubber material to an open mill, and further mixing for 6 minutes on the open mill.
(5) And (4) cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for filtering the rubber material, and cooling the filtered rubber material in a shade place. Wherein, the filter screen of the rubber filter head adopts a three-layer structure (the three layers of the filter screen are respectively 80 meshes, 160 meshes and 80 meshes).
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is increased to 84 ℃, and discharging rubber when the temperature is increased to 98 ℃.
(7) And (4) further mixing the rubber material obtained in the step (6) on an open mill for 3 minutes, uniformly mixing, cutting the rubber, and rolling.
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables in the embodiment has the beneficial effects that:
(1) Has excellent insulating electric performance and volume resistivity more than or equal to 10 16 Ω·cm。
(2) Has excellent mechanical performance, tensile strength not less than 9MPa and elongation at break not less than 400%.
(3) High temperature aging resistance, good processing performance and high cost performance, and can be used as an insulating layer of a high temperature resistant high strength rubber sleeve cable.
(4) Has excellent high temperature aging resistance, and the change rate of tensile strength and the change rate of elongation at break are within plus or minus 30 percent after heat treatment at 150 ℃ for 7 days.
The preparation method of the embodiment is simple in operation method, low in cost, universal and easy for large-scale production.
The technical parameters of the high temperature resistant high strength ethylene propylene rubber insulating rubber for wires and cables prepared in the examples 2 to 6 are shown in the table 1:
TABLE 1 technical parameter table of high temperature resistant high strength ethylene propylene rubber insulation rubber for electric wire and cable
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (14)
1. The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables is characterized by comprising the following raw materials in formula:
2. the high temperature resistant high strength ethylene propylene rubber insulation rubber for electric wire according to claim 1, wherein ethylene content of the ethylene propylene rubber is 40wt% -75wt%, and Mooney viscosity thereof
20-65, and the third monomer ethylidene norbornene is 0.5-8 wt%.
3. The ethylene-propylene rubber insulation rubber with high temperature resistance and high strength for the electric wire and cable as claimed in claim 1, wherein the ethylene-octene copolymer has a melt index of 0.5-1.0g/min, a melting temperature of 55-65 ℃, and a Mooney viscosity at 190 ℃ under a test condition of 2.16kg load
Is 20-35.
4. The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables as claimed in claim 1, wherein the particle size of the calcined pottery clay is 4000-10000 meshes.
5. The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables according to claim 1, wherein the specific surface area of the precipitated silica is 50-200m 2 /g。
6. The high-temperature-resistant high-strength ethylene propylene rubber insulation paste for wires and cables according to claim 1, wherein the coupling agent is one or more of vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (beta-methoxyethoxy) silane, bis (gamma-triethoxysilylpropyl) -tetrasulfide, gamma-methacryloxypropyltrimethoxysilane, gamma-mercaptopropyltrimethylsilane, gamma-mercaptopropyltriethoxysilane, and gamma-aminopropyltriethoxysilane.
7. The high temperature resistant high strength ethylene propylene rubber insulating rubber for electric wire according to claim 1, wherein the nano montmorillonite is one or more of calcium-based montmorillonite, sodium-based montmorillonite and magnesium-based montmorillonite.
8. The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables as claimed in claim 1, wherein the particle size of the filler is 3000-10000 meshes.
9. The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables as claimed in claim 1, wherein the rubber-based paraffin oil has a flash point of 300-400 ℃ and a kinematic viscosity of 400-500mm at 40 ℃ 2 /s。
10. The high-temperature-resistant high-strength ethylene propylene rubber insulation rubber for the electric wires and cables as claimed in claim 1, wherein the anti-aging agent is one or more of an anti-aging agent 445, an anti-aging agent MB, an anti-aging agent RD, an antioxidant 300 and an antioxidant 1010.
11. The high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and the cables as claimed in claim 1, wherein the ultraviolet absorbent is one or more of ultraviolet absorbent UV-9, ultraviolet absorbent UV-531, ultraviolet absorbent UV-329 and ultraviolet absorbent UV-326.
12. The ethylene-propylene rubber insulating rubber with high temperature resistance and high strength for the electric wire and cable as claimed in claim 1, wherein the co-curing agent is one or more of triallyl isocyanurate, triallyl cyanurate, N' -m-phenylene bismaleimide and trimethylolpropane trimethacrylate.
13. The high temperature resistant high strength ethylene propylene rubber insulation rubber for wire and cable according to claim 1,
the filler is one or more of talcum powder, light calcium carbonate and Qiangwei powder;
the processing aid is 58# fully refined paraffin and/or polyethylene wax.
14. The preparation method of the high-temperature-resistant high-strength ethylene propylene rubber insulating rubber for the wires and cables according to any one of claims 1 to 13 is characterized by comprising the following steps of:
(1) Adding ethylene propylene rubber and ethylene octene copolymer into an internal mixer, and pressurizing and mixing for 0.5-10 minutes;
(2) Adding zinc oxide, stearic acid, calcined argil, precipitated white carbon black, a coupling agent, nano montmorillonite, a filler, octadecyl dimethyl benzyl ammonium chloride, a processing aid, rubber-based paraffin oil, an anti-aging agent, an ultraviolet absorbent, titanium dioxide and barium sulfate in the raw materials into a high-speed stirrer, and stirring at a high speed for 2-10 minutes at the temperature of 40-50 ℃;
(3) Adding the raw materials uniformly stirred in the step (2) into the rubber material in the step (1), lowering an upper top plug of an internal mixer, and carrying out pressurized mixing;
(4) Discharging the rubber to an open mill when the temperature of the rubber in the step (3) is raised to 100-115 ℃, and further mixing for 1-10 minutes on the open mill;
(5) Cutting the rubber material in the step (4) into strips, conveying the strips to a feeding port of a rubber filter through a conveyor belt for rubber filtering, and cooling the filtered rubber material in a shade place;
(6) Adding the cooled rubber material into an internal mixer, pressurizing and mixing, adding dicumyl peroxide and an auxiliary vulcanizing agent into the internal mixer when the temperature is raised to 80-85 ℃, and discharging rubber when the temperature is raised to 95-100 ℃;
(7) Further mixing the rubber material obtained in the step (6) on an open mill for 2-3 minutes, uniformly mixing, cutting the rubber, and rolling;
(8) And (3) passing the coiled rubber compound through a three-roller calender, eight-roller cooling equipment and a laminating machine, and thinning and cooling the rubber compound into sheets to finish the rubber material preparation.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683449A (en) * | 2005-03-17 | 2005-10-19 | 上海交通大学 | Process for preparing ethylene-propylene rubber/montmorillonite nano composite material |
| CN101914244A (en) * | 2010-07-30 | 2010-12-15 | 江苏巨业电缆有限公司 | Single-core cable insulating rubber for low-smoke and zero-halogen flame-resistant rail vehicle with rated voltage of 3000V |
| CN104710693A (en) * | 2015-03-23 | 2015-06-17 | 苏州市神龙门窗有限公司 | Low-temperature-resistant door/window sealing strip and preparation method thereof |
| CN108530769A (en) * | 2018-05-16 | 2018-09-14 | 科顺防水科技股份有限公司 | A kind of welding rubber and plastic waterstop and preparation method thereof |
| CN109135076A (en) * | 2018-10-10 | 2019-01-04 | 航天瑞奇电缆有限公司 | A kind of insulation compound formula and preparation method thereof of low pressure rubber cable product |
| CN109456542A (en) * | 2018-09-29 | 2019-03-12 | 重庆鹏博电器有限公司 | A kind of rubber insulation material |
| CN110713640A (en) * | 2018-07-13 | 2020-01-21 | 杭州星庐科技有限公司 | Rubber composition and processing method, and rubber product and production method using same |
| CN112321952A (en) * | 2020-11-03 | 2021-02-05 | 中物院成都科学技术发展中心 | Ethylene propylene diene monomer composite rubber material and preparation method thereof |
| CN113429687A (en) * | 2021-07-10 | 2021-09-24 | 浙江欧尔赛斯科技有限公司 | Puncture-resistant rubber material and sealing gasket |
-
2022
- 2022-06-15 CN CN202210675111.7A patent/CN115418056A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683449A (en) * | 2005-03-17 | 2005-10-19 | 上海交通大学 | Process for preparing ethylene-propylene rubber/montmorillonite nano composite material |
| CN101914244A (en) * | 2010-07-30 | 2010-12-15 | 江苏巨业电缆有限公司 | Single-core cable insulating rubber for low-smoke and zero-halogen flame-resistant rail vehicle with rated voltage of 3000V |
| CN104710693A (en) * | 2015-03-23 | 2015-06-17 | 苏州市神龙门窗有限公司 | Low-temperature-resistant door/window sealing strip and preparation method thereof |
| CN108530769A (en) * | 2018-05-16 | 2018-09-14 | 科顺防水科技股份有限公司 | A kind of welding rubber and plastic waterstop and preparation method thereof |
| CN110713640A (en) * | 2018-07-13 | 2020-01-21 | 杭州星庐科技有限公司 | Rubber composition and processing method, and rubber product and production method using same |
| CN109456542A (en) * | 2018-09-29 | 2019-03-12 | 重庆鹏博电器有限公司 | A kind of rubber insulation material |
| CN109135076A (en) * | 2018-10-10 | 2019-01-04 | 航天瑞奇电缆有限公司 | A kind of insulation compound formula and preparation method thereof of low pressure rubber cable product |
| CN112321952A (en) * | 2020-11-03 | 2021-02-05 | 中物院成都科学技术发展中心 | Ethylene propylene diene monomer composite rubber material and preparation method thereof |
| CN113429687A (en) * | 2021-07-10 | 2021-09-24 | 浙江欧尔赛斯科技有限公司 | Puncture-resistant rubber material and sealing gasket |
Non-Patent Citations (3)
| Title |
|---|
| MUHAMMAD ALI，等: "Preparation and characterization of EPDM-silica nano/micro composites for high voltage insulation applications", 《MATERIALS SCIENCE-POLAND》, vol. 33, no. 1, pages 213 - 219 * |
| 王宇静: "高压交联电缆附件用EPDM 绝缘胶料的研制", 《橡胶资源利用》, vol. 2013, no. 2, pages 26 - 31 * |
| 裴润，等: "《硫酸法钛白生产》", vol. 1, 化学工业出版社, pages: 29 * |
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Application publication date: 20221202 |