CN117603535A - High-metal-adhesion ethylene propylene rubber insulated cable and preparation method thereof - Google Patents
High-metal-adhesion ethylene propylene rubber insulated cable and preparation method thereof Download PDFInfo
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- CN117603535A CN117603535A CN202311424500.3A CN202311424500A CN117603535A CN 117603535 A CN117603535 A CN 117603535A CN 202311424500 A CN202311424500 A CN 202311424500A CN 117603535 A CN117603535 A CN 117603535A
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- ethylene propylene
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- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 229920000181 Ethylene propylene rubber Polymers 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 54
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 50
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 239000004927 clay Substances 0.000 claims abstract description 25
- 239000011787 zinc oxide Substances 0.000 claims abstract description 22
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 18
- 239000006229 carbon black Substances 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 15
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- 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 abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 12
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims description 37
- 239000005995 Aluminium silicate Substances 0.000 claims description 17
- 235000012211 aluminium silicate Nutrition 0.000 claims description 17
- 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 17
- 239000011162 core material Substances 0.000 claims description 14
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 13
- 239000012188 paraffin wax Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- BMFMTNROJASFBW-UHFFFAOYSA-N 2-(furan-2-ylmethylsulfinyl)acetic acid Chemical compound OC(=O)CS(=O)CC1=CC=CO1 BMFMTNROJASFBW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000004381 surface treatment Methods 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- CMAUJSNXENPPOF-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-n-cyclohexylcyclohexanamine Chemical compound C1CCCCC1N(C1CCCCC1)SC1=NC2=CC=CC=C2S1 CMAUJSNXENPPOF-UHFFFAOYSA-N 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 claims description 3
- 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 claims description 2
- 238000004132 cross linking Methods 0.000 abstract description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 10
- 229910052717 sulfur Inorganic materials 0.000 description 10
- 239000011593 sulfur Substances 0.000 description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 7
- 239000005977 Ethylene Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 5
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 235000019400 benzoyl peroxide Nutrition 0.000 description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 239000012190 activator Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C08K2003/2234—Oxides; Hydroxides of metals of lead
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2312/00—Crosslinking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to the technical field of cables, in particular to a high-metal-adhesion ethylene propylene rubber insulated cable and a preparation method thereof, wherein the high-metal-adhesion ethylene propylene rubber insulated cable comprises an insulating layer and a metal inner core, and the insulating layer comprises the following substances: 34-37 parts of ethylene propylene diene monomer rubber, 0.55-0.65 part of anti-aging agent, 4.5-6.5 parts of antiozonant, 1.71-1.89 parts of red lead powder, 1.71-1.89 parts of zinc oxide, 0.45-0.55 part of coupling agent, 0.19-0.21 part of carbon black masterbatch, 1.1-5.5 parts of rubber auxiliary agent, 23.5-26.5 parts of calcined clay and 3.8-4.2 parts of talcum powder. By adding red lead powder and rubber auxiliary agent into the insulating layer, the insulating layer is uniformly reinforced, the crosslinking density of the insulating layer is improved, and the interface bonding strength of the insulating layer and the metal inner core is improved.
Description
Technical Field
The application relates to the technical field of cables, in particular to an ethylene propylene rubber insulated cable with high metal adhesion and a preparation method thereof.
Background
The ethylene propylene diene monomer has a highly saturated structure, is flexible in molecular chain and good in elasticity, and is widely used as a wire and cable insulating layer material with excellent insulativity, mechanical property, heat resistance and corrosion resistance. However, ethylene propylene diene monomer belongs to saturated rubber, and has poor self-adhesion and mutual adhesion, that is, in a cable, the adhesion between the ethylene propylene diene monomer and a metal conductor is poor, the process requirement cannot be met, and the quality of a finished product of the cable is affected.
Disclosure of Invention
The ethylene propylene rubber insulated cable with high metal adhesion is provided for solving the problem that the ethylene propylene diene monomer rubber and a metal conductor are poor in adhesion.
It is still another object of the present application to provide a method for preparing a high metal adhesion ethylene propylene rubber insulated cable.
The technical aim of the application is achieved through the following technical scheme:
in a first aspect, the present application provides a high metal adhesion ethylene propylene rubber insulated cable comprising an insulating layer and a metal inner core, the insulating layer comprising: 34-37 parts of ethylene propylene diene monomer rubber, 0.55-0.65 part of anti-aging agent, 4.5-6.5 parts of antiozonant, 1.71-1.89 parts of red lead powder, 1.71-1.89 parts of zinc oxide, 1.71-1.89 parts of paraffin wax, 0.45-0.55 part of coupling agent, 0.19-0.21 part of carbon black masterbatch, 1.1-5.5 parts of rubber auxiliary agent, 23.5-26.5 parts of calcined clay, 3.8-4.2 parts of talcum powder and 1.615-1.785 parts of vulcanizing agent.
Through adopting above-mentioned scheme, add red lead powder in the insulating layer, red lead powder can replace partial zinc oxide, forms the activator in the insulating layer with zinc oxide coaction, activates the vulcanization system in the insulating layer, improves the vulcanize degree of insulating layer, can improve the bonding strength between insulating layer and the metal conductor. Due to the high dispersibility of the red lead powder, the dispersion uniformity of zinc oxide, calcined clay, talcum powder and the like in the insulating layer can be improved together with the coupling agent and paraffin, so that the insulating layer can obtain a uniform reinforcing effect, the interface of the insulating layer, which is in contact with the metal conductor, is provided with a uniform filler, and the friction force and the bonding strength between the insulating layer and the metal conductor can be further enhanced.
Calcined clay is added into the insulating layer, and after the clay is calcined, plugs such as organic matters, water molecules and the like in the clay gaps can be removed, so that the clay can recover the porous structure and activity, the Mooney viscosity of the insulating layer can be improved, and the tensile strength, elongation at break, tearing strength and insulating performance of the insulating layer are enhanced.
Optionally, the rubber auxiliary comprises zinc methacrylate.
By adopting the scheme, zinc methacrylate is selected as a rubber auxiliary agent, the zinc methacrylate is in ethylene propylene diene monomer rubber, double bonds are opened to carry out polymerization reaction, a polymer can be generated through self polymerization reaction or grafted on the ethylene propylene diene monomer rubber, and Zn is introduced into an insulating layer 2+ And COO - And further Zn 2+ And COO - The ethylene propylene diene monomer molecular chains can be connected in an ionic bond crosslinking network mode, so that an ionic bond three-dimensional network structure which is crosslinked is formed in the insulating layer. The complex network structure is formed by the mutual staggering of the ionic bond three-dimensional network structure and the covalent bond network in the insulating layer, so that the crosslinking density of the insulating layer is stably improved, the metal viscosity, the tensile strength and the compactness of the insulating layer are enhanced, and the product quality of the cable is stably improved.
Optionally, the calcined clay comprises coal-based kaolin.
Through adopting above-mentioned scheme, adopt coal measure kaolin to add to the insulating layer, coal measure kaolin's granularity is finer, can carry out comparatively even packing and reinforcement to the insulating layer, improves the intensity of insulating layer to can make the roughness increase of insulating layer and metal conductor interface, further improve the bonding strength between insulating layer and the metal conductor. Meanwhile, the coal-based kaolin has higher recycling rate, reduces the cost of the cable, and improves the insulativity, the thermal stability, the flame retardance and the like of the cable.
Optionally, the coal-based kaolin is a kaolin modified by a silane coupling agent.
Through adopting above-mentioned scheme, adopt silane coupling agent to carry out the modification to kaolin in this application technical scheme, silane coupling agent can improve the polarity of kaolin, makes the kaolin can comparatively evenly disperse in the insulating layer to improve the polarity of insulating layer, further improve the cohesiveness of insulating layer and metal conductor.
Optionally, the insulating layer further comprises 0.4 to 0.6 parts by weight of chlorinated polyethylene
Through adopting above-mentioned scheme, added chlorinated polyethylene in the insulating layer in this application technical scheme, the space charge distribution in the insulating layer can effectively be restrained in the addition of chlorinated polyethylene, reduces the possibility that the insulating layer is broken down by the electric current. Meanwhile, the content of the chlorinated polyethylene in the insulating layer is optimized, and the proper addition amount of the chlorinated polyethylene can effectively inhibit space charge in the insulating layer, so that the content of the chlorinated polyethylene is too low or too high, and the inhibiting effect on the space charge in the insulating layer is poor.
Optionally, the ethylene propylene diene monomer comprises 20-26 parts by weight of ethylene propylene diene monomer 4045, and 11-14 parts by weight of ethylene propylene diene monomer KEP510 or ethylene propylene diene monomer 3722P.
By adopting the scheme, the ethylene propylene diene monomer 4045 has low ethylene content and high Mooney viscosity, and the ethylene propylene diene monomer KEP510 or the ethylene propylene diene monomer 3722P has high ethylene content and low Mooney viscosity, so that the ethylene propylene diene monomer with high ethylene content and low Mooney viscosity is adopted to be blended with the ethylene propylene diene monomer with low ethylene content and high Mooney viscosity to serve as the base material of the insulating layer in the scheme, so that the insulating layer has the advantages of higher tensile strength, hardness, easy vulcanization and easy processing, and simultaneously, higher metal viscosity and peeling strength of the insulating layer can be endowed, and the integral quality of the cable is improved.
Optionally, the vulcanizing agent comprises 1.15 to 1.25 parts by weight of a vulcanizing agent DCP and 0.465 to 0.535 parts by weight of a vulcanizing agent PDM.
Through adopting above-mentioned scheme, optimized the constitution of vulcanizing agent in this application, through vulcanizing agent PDM as helping cross-linking agent and vulcanizing agent DCP cooperation, can effectively improve the crosslinked density of insulating layer, improve tensile strength and the compactness of insulating layer, and then improve the bonding strength between insulating layer and the metal conductor, can also improve the waterproof, the wear-resisting scheduling characteristic of insulating layer, further improve the overall quality of cable.
Meanwhile, the content of each component in the vulcanizing agent is optimized in the technical scheme, the crosslinking density in the insulating layer is proper by adjusting the proportion between the vulcanizing agent DCP and the vulcanizing agent PDM, the cohesiveness between the insulating layer and the metal conductor is improved, the proper tensile strength and the elongation at break of the insulating layer are maintained, the possibility of too high brittleness caused by too high crosslinking density is reduced, and the cable meets the quality requirement.
In a second aspect, the present application provides a method for preparing a high metal adhesion ethylene propylene rubber insulated cable, comprising the steps of:
s1, core material treatment: respectively twisting round metal wires into conductors through wiredrawing and annealing, and carrying out surface treatment on the conductors to obtain core materials;
s2, preparation of an insulating layer: respectively weighing ethylene propylene diene monomer rubber, an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay, talcum powder and a vulcanizing agent according to the weight parts;
firstly, placing ethylene propylene diene monomer in an open mill, plasticating, cutting and rolling, adding an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay and talcum powder into the open mill, mixing, adding a vulcanizing agent, continuing mixing, and blanking to obtain an insulating layer material;
s3, cable preparation: and taking the insulating layer material and the core material, and coating by extrusion to obtain the insulated cable.
Optionally, the surface treatment is selected from any one of chemical roughening treatment, phosphating treatment and sand blasting treatment.
Through adopting above-mentioned technical scheme, through chemical roughening treatment, phosphating or sand blasting can all increase conductor surface roughness, increase the specific surface area of conductor, increase the effect of penetration of insulating layer to the conductor, further improve the bonding strength between insulating layer and the conductor.
Optionally, the conductor is coated with a binder, the binder comprising at least one of N-cyclohexyl-2-benzothiazolyl sulfenamide, N-dicyclohexyl-2-benzothiazolyl sulfenamide, dibenzothiazyl disulfide, N' -m-phenylene bismaleimide.
By adopting the scheme, the N-cyclohexyl-2-benzothiazolyl sulfenamide, the N, N-dicyclohexyl-2-benzothiazolyl sulfenamide and the dibenzothiazyl disulfide and the N, N' -m-phenylene bismaleimide are easy to crack to generate sulfur-containing free radicals, and chemical bond connection can be formed between the sulfur-containing free radicals and macromolecules, so that the insulating layer and the metal conductor are not only mechanically connected, the chemical bond connection is increased, and the bonding strength between the insulating layer and the metal conductor is stably improved.
In summary, the present application has the following technical effects:
1. the red lead powder is added into the insulating layer, and can replace part of zinc oxide, and the red lead powder and the zinc oxide jointly act to form an activator in the insulating layer, so that a vulcanization system in the insulating layer is activated, the vulcanization degree of the insulating layer is improved, and the bonding strength between the insulating layer and the metal conductor can be improved. Due to the high dispersibility of the red lead powder, the dispersion uniformity of zinc oxide, calcined clay, talcum powder and the like in the insulating layer can be improved together with the coupling agent and paraffin, so that the insulating layer can obtain a uniform reinforcing effect, the interface of the insulating layer, which is in contact with the metal conductor, is provided with a uniform filler, and the friction force and the bonding strength between the insulating layer and the metal conductor can be further enhanced;
2. zinc methacrylate is selected as a rubber auxiliary agent, the zinc methacrylate is in ethylene propylene diene monomer rubber, double bonds are opened to generate polymerization reaction, a polymer can be generated through self polymerization reaction or grafted on the ethylene propylene diene monomer rubber, and Zn is introduced into an insulating layer 2+ And COO - And further Zn 2+ And COO - The ethylene propylene diene monomer molecular chains can be connected in an ionic bond crosslinking network mode, so that an ionic bond three-dimensional network structure which is crosslinked is formed in the insulating layer. Covalent bonding in three-dimensional network structure and insulating layer through ionic bondThe bond networks are mutually staggered to form a complex network structure, so that the crosslinking density of the insulating layer is stably improved, the metal viscosity, the tensile strength and the compactness of the insulating layer are enhanced, and the product quality of the cable is stably improved;
3. the chlorinated polyethylene is added into the insulating layer, so that the space charge distribution in the insulating layer can be effectively inhibited, and the possibility of breakdown of the insulating layer by current is reduced. Meanwhile, the content of the chlorinated polyethylene in the insulating layer is optimized, and the proper addition amount of the chlorinated polyethylene can effectively inhibit space charge in the insulating layer, so that the content of the chlorinated polyethylene is too low or too high, and the inhibiting effect on the space charge in the insulating layer is poor;
4. the ethylene propylene diene monomer with high ethylene content and low Mooney viscosity is adopted to be blended with the ethylene propylene diene monomer with low ethylene content and high Mooney viscosity to be used as the base material of the insulating layer, so that the insulating layer has the advantages of higher tensile strength, higher hardness, easy vulcanization and easy processing, and simultaneously, higher metal viscosity and higher peeling strength can be endowed to the insulating layer, and the overall quality of the cable is improved;
5. the N-cyclohexyl-2-benzothiazolyl sulfenamide, the N, N-dicyclohexyl-2-benzothiazolyl sulfenamide and the N, N' 02-m-phenylene bismaleimide are easy to crack to generate sulfur-containing free radicals, and chemical bond connection can be formed between the sulfur-containing free radicals and macromolecules, so that the insulating layer and the metal conductor are not only mechanically connected, the chemical bond connection is increased, and the bonding strength between the insulating layer and the metal conductor is stably improved.
Detailed Description
Preparation example
Ethylene propylene diene monomer preparation
Preparation examples 1 to 3
Ethylene propylene diene monomer 4045, ethylene propylene diene monomer KEP510 and ethylene propylene diene monomer 3722P are respectively taken and blended to obtain ethylene propylene diene monomer 1-3, and the specific mass is shown in Table 1.
Preparation of vulcanizing agent
Preparation examples 4 to 6
The vulcanizing agent DCP and the vulcanizing agent PDM are respectively taken and mixed to obtain the vulcanizing agents 1-3, and the specific mass is shown in Table 2.
Calcined clay preparation example
Preparation example 7
Coal-based kaolin was used as calcined clay 1.
Preparation example 8
And (3) placing the coal-series kaolin in a multifunctional pulverizer, adding a silane coupling agent KH550, shearing, and pulverizing to obtain calcined clay 2.
Preparation of adhesive
Preparation example 9
100g of ethylene propylene diene monomer 4045, 10g of methyl methacrylate, 10g of butyl acrylate, 1250g of toluene, 0.5g of dibenzoyl peroxide, 3g of white carbon black, 0.1g of sulfur, 0.1g of tetramethylthiuram, 0.3g of zinc oxide and 0.05g of N-cyclohexyl-2-benzothiazolyl sulfenamide are respectively taken. Mixing ethylene propylene diene monomer 4045 with toluene, and heating in water bath at 80deg.C to obtain intermediate solution. And adding dibenzoyl peroxide into the intermediate solution, stirring for dissolving, dripping methyl methacrylate and butyl acrylate at the speed of 7-8 drops/min, and continuously stirring for 1h to obtain a graft. White carbon black, sulfur, tetramethylthiuram, zinc oxide and N-cyclohexyl-2-benzothiazolyl sulfenamide are added into the graft, and the mixture is vigorously stirred to obtain the adhesive 1.
Preparation example 10
100g of ethylene propylene diene monomer 4045, 10g of methyl methacrylate, 10g of butyl acrylate, 1250g of toluene, 0.5g of dibenzoyl peroxide, 3g of white carbon black, 0.1g of sulfur, 0.1g of tetramethylthiuram, 0.3g of zinc oxide and 0.05g of dibenzothiazyl disulfide are respectively taken. Mixing ethylene propylene diene monomer 4045 with toluene, and heating in water bath at 80deg.C to obtain intermediate solution. And adding dibenzoyl peroxide into the intermediate solution, stirring for dissolving, dripping methyl methacrylate and butyl acrylate at the speed of 7-8 drops/min, and continuously stirring for 1h to obtain a graft. White carbon black, sulfur, tetramethyl thiuram, zinc oxide and dibenzothiazyl disulfide are added into the graft, and the mixture is stirred vigorously to obtain the adhesive 2.
Examples
Example 1
The application provides a high metal adhesion ethylene propylene rubber insulated cable, including insulating layer and metal inner core, the insulating layer includes following substances: ethylene propylene diene monomer 1, an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay, talcum powder and a vulcanizing agent 1, wherein the specific mass is shown in Table 3.
Wherein the anti-aging agent is an anti-aging agent RD, the anti-ozone agent is an anti-ozone agent CTU, the coupling agent is a coupling agent A-172, the carbon black masterbatch is a carbon black M120 masterbatch, the talcum powder is 5000 mesh superfine talcum powder, the calcined clay is TD-80A, and the rubber auxiliary agent is adhesive resin HRT-1863.
The application also provides a preparation process of the ethylene propylene rubber insulated cable with high metal adhesion, which comprises the following steps: s1, core material treatment: respectively twisting round metal wires into conductors through wiredrawing and annealing, and carrying out surface treatment on the conductors to obtain core materials;
wherein, the surface treatment is chemical roughening treatment, comprising the following steps: firstly, mixing the mist treatment liquid SagertCln108 and the mist catalyst SagertCln106A according to the mass ratio of 3:1, diluting with deionized water to obtain working solution with the mass fraction of 10% of the mixed solution, and mist treatment is carried out on 45 conductors for 20-60min at the temperature of 70+/-5 ℃.
S2, preparation of an insulating layer: respectively weighing ethylene propylene diene monomer rubber, an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay, talcum powder and a vulcanizing agent according to the weight parts;
firstly, placing ethylene propylene diene monomer in an open mill, plasticating, cutting and rolling, adding an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay and talcum powder into the open mill, mixing, adding a vulcanizing agent, continuing mixing, and blanking to obtain an insulating layer material;
s3, cable preparation: and taking the insulating layer material and the core material, and coating by extrusion to obtain the insulated cable 1-3.
Examples 4 to 5
The difference from example 2 is that: equal mass ethylene propylene diene monomer rubber 2-3 is adopted to replace ethylene propylene diene monomer rubber 1 in the embodiment 2 to prepare the cable 4-5.
Examples 6 to 7
The difference from example 2 is that: instead of the vulcanizing agent 1 in example 2, a cable 6-7 was prepared using an equal mass of vulcanizing agent 2-3.
Examples 8 to 9
The difference from example 2 is that: instead of the calcined clay in example 2, an equal mass of calcined clay 1-2 was used to prepare cables 8-9.
Example 10
The difference from example 2 is that: the cable 10 was prepared using zinc methacrylate as a rubber aid.
Examples 11 to 13
The difference from example 2 is that: the insulation layer also included chlorinated polyethylene, producing cables 11-13, with specific mass shown in table 4.
Example 14
The difference from example 2 is that: the surface treatment comprises the following steps: the cable 14 was prepared by blasting with 36# white steel on a blaster or with G40 steel on a crawler-type shot blaster, all to a sa2.5 grade.
Example 15
The difference from example 2 is that: the surface treatment comprises the following steps: the medium-temperature phosphating agent SP-3321B has the mass fraction of 10%, the total acidity of 55, the free acidity of 5.4, the temperature of 60+/-5 ℃ and the time of 5min, and the cable 15 is prepared.
Example 16
The difference from example 2 is that: the adhesive 1 was brushed onto the conductor surface to obtain a core material, and a cable 16 was prepared.
Example 17
The difference from example 2 is that: the adhesive 2 was brushed on the surface of the conductor to obtain a core material, and a cable 17 was prepared.
Comparative example
Comparative example 1
The difference from example 2 is that: in this comparative example, no red lead powder was added to prepare the cable 18.
Comparative example 2
The difference from example 2 is that: in this comparative example, a cable 19 was prepared without adding a rubber auxiliary agent.
Performance testing
1. Peel strength test
And adopting a CMT2013 microcomputer to control an electronic tensile testing machine, and testing the peeling strength and the adhesive attachment rate between the insulating layer and the metal according to GB/T7760-20032.
2. Mechanical property test
The insulation layer was tested according to GB/T528-2009 using an electronic tensile machine with a tensile rate of 500mm/min.
3. Cross-link Density test
The crosslink density of the insulating layer was measured by an equilibrium swelling method.
Comparison of performance tests with reference to table 3 can be found:
as can be seen from the comparison of examples 1-3 and comparative example 2: the improvement in both the peel strength and the tensile strength of the cables prepared in examples 1-3 suggests that the use of red lead powder in the insulation layer in this application can co-act with zinc oxide to form an activator in the insulation layer, increase the degree of vulcanization of the insulation layer, and improve the bond strength between the insulation layer and the metal conductor. Due to the high dispersibility of the red lead powder, the dispersion uniformity of zinc oxide, calcined clay, talcum powder and the like in the insulating layer can be improved together with the coupling agent and paraffin, so that the insulating layer obtains a uniform reinforcing effect, and the friction force and the bonding strength between the insulating layer and the metal conductor are enhanced.
As can be seen from the comparison of examples 4-5, examples 6-7 and example 2: the cables prepared in examples 4-5 and examples 6-7 all have improved peel strength and tensile strength, which means that ethylene propylene diene monomer blends with different ethylene contents are used as the base material of the insulating layer in the application, so that the insulating layer has higher tensile strength, and the insulating layer is endowed with higher metal viscosity and peel strength, thereby improving the overall quality of the cable.
Comparison of examples 8-9 with example 2 shows that: the improvement in peel strength and tensile strength of the cables prepared in examples 8-9, which indicates that the modification of kaolin with a silane coupling agent in the present application, the silane coupling agent improves the polarity of the kaolin, allows the kaolin to be more uniformly dispersed in the insulating layer, improves the polarity of the insulating layer, and improves the adhesion of the insulating layer to the metal conductor.
As can be seen from a comparison of example 10 and example 2: the improvement in both the peel strength and the tensile strength of the cable prepared in example 10 suggests that the addition of chlorinated polyethylene in the present application can effectively suppress the space charge distribution in the insulating layer, and reduce the possibility of the insulating layer being broken down by electric current.
Comparison of examples 11-13 with example 2 shows that: the improvement in both the peel strength and the tensile strength of the cables prepared in examples 11-13 suggests that in the present application zinc methacrylate in ethylene propylene diene monomer, it is possible to form a polymer by self-polymerization or graft on ethylene propylene diene monomer, and an ionomer network is introduced into the insulating layer, so that an ionomer three-dimensional network structure is formed in the insulating layer. The complex network structure is formed by the mutual staggering of the ionic bond three-dimensional network structure and the covalent bond network in the insulating layer, so that the crosslinking density of the insulating layer is stably improved, the metal viscosity, the tensile strength and the compactness of the insulating layer are enhanced, and the product quality of the cable is stably improved.
Comparison of examples 16-17 with example 2 shows that: the cables prepared in examples 16-17 all had improved peel strength and tensile strength, which indicated that the binder used in the present application had sulfur-containing radicals, and chemical bond connection with macromolecules could be formed by the sulfur-containing radicals, so that the insulating layer and the metal conductor were not only mechanically connected, but also increased chemical bond connection, and the bonding strength between the insulating layer and the metal conductor was stably improved.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. The ethylene propylene rubber insulated cable with high metal adhesion is characterized by comprising an insulating layer and a metal inner core, wherein the insulating layer comprises the following substances: 34-37 parts of ethylene propylene diene monomer rubber, 0.55-0.65 part of anti-aging agent, 4.5-6.5 parts of antiozonant, 1.71-1.89 parts of red lead powder, 1.71-1.89 parts of zinc oxide, 1.71-1.89 parts of paraffin wax, 0.45-0.55 part of coupling agent, 0.19-0.21 part of carbon black masterbatch, 1.1-5.5 parts of rubber auxiliary agent, 23.5-26.5 parts of calcined clay, 3.8-4.2 parts of talcum powder and 1.615-1.785 parts of vulcanizing agent.
2. The high metal adhesion ethylene propylene rubber insulated cable of claim 1, wherein: the rubber auxiliary comprises zinc methacrylate.
3. The high metal adhesion ethylene propylene rubber insulated cable of claim 1, wherein: the calcined clay comprises coal-based kaolin.
4. A high metal adhesion ethylene propylene rubber insulated cable as claimed in claim 3, wherein: the coal-based kaolin is kaolin modified by a silane coupling agent.
5. The high metal adhesion ethylene propylene rubber insulated cable of claim 1, wherein: the insulating layer further comprises 0.4 to 0.6 parts by weight of chlorinated polyethylene.
6. The high metal adhesion ethylene propylene rubber insulated cable of claim 1, wherein the ethylene propylene diene rubber comprises 20-26 parts by weight of ethylene propylene diene rubber 4045, and the ethylene propylene diene rubber further comprises 11-14 parts by weight of ethylene propylene diene rubber KEP510 or ethylene propylene diene rubber 3722P.
7. The high metal adhesion ethylene propylene rubber insulated cable of claim 1, wherein the vulcanizing agent comprises 1.15-1.25 parts by weight of vulcanizing agent DCP and 0.465-0.535 parts by weight of vulcanizing agent PDM.
8. The preparation method of the ethylene propylene rubber insulated cable with high metal adhesion is characterized by comprising the following steps of:
s1, core material treatment: respectively twisting round metal wires into conductors through wiredrawing and annealing, and carrying out surface treatment on the conductors to obtain core materials;
s2, preparation of an insulating layer: respectively weighing ethylene propylene diene monomer rubber, an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay, talcum powder and a vulcanizing agent according to the weight parts;
firstly, placing ethylene propylene diene monomer in an open mill, plasticating, cutting and rolling, adding an anti-aging agent, an antiozonant, red lead powder, zinc oxide, paraffin, a coupling agent, carbon black masterbatch, a rubber auxiliary agent, calcined clay and talcum powder into the open mill, mixing, adding a vulcanizing agent, continuing mixing, and blanking to obtain an insulating layer material;
s3, cable preparation: and taking the insulating layer material and the core material, and coating by extrusion to obtain the insulated cable.
9. The method for preparing the ethylene propylene rubber insulated cable with high metal adhesion according to claim 8, wherein the method comprises the following steps: the surface treatment is selected from any one of chemical roughening treatment, phosphating treatment and sand blasting treatment.
10. The method for preparing the ethylene propylene rubber insulated cable with high metal adhesion according to claim 8, wherein the method comprises the following steps: and coating a binder on the conductor, wherein the binder comprises at least one of N-cyclohexyl-2-benzothiazolyl sulfenamide, N, N-dicyclohexyl-2-benzothiazolyl sulfenamide, dibenzothiazyl disulfide and N, N' -m-phenylene bismaleimide.
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| CN202311424500.3A CN117603535A (en) | 2023-10-31 | 2023-10-31 | High-metal-adhesion ethylene propylene rubber insulated cable and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311424500.3A CN117603535A (en) | 2023-10-31 | 2023-10-31 | High-metal-adhesion ethylene propylene rubber insulated cable and preparation method thereof |
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