CN117304590A - High-weather-resistance power cable and production process thereof - Google Patents

High-weather-resistance power cable and production process thereof Download PDF

Info

Publication number
CN117304590A
CN117304590A CN202311600055.1A CN202311600055A CN117304590A CN 117304590 A CN117304590 A CN 117304590A CN 202311600055 A CN202311600055 A CN 202311600055A CN 117304590 A CN117304590 A CN 117304590A
Authority
CN
China
Prior art keywords
parts
carbon black
epdm
power cable
electric cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202311600055.1A
Other languages
Chinese (zh)
Other versions
CN117304590B (en
Inventor
刘立权
闫世儒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rongmao Technology Group Co ltd
Original Assignee
Rongmao Technology Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rongmao Technology Group Co ltd filed Critical Rongmao Technology Group Co ltd
Priority to CN202311600055.1A priority Critical patent/CN117304590B/en
Publication of CN117304590A publication Critical patent/CN117304590A/en
Application granted granted Critical
Publication of CN117304590B publication Critical patent/CN117304590B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/02—Copolymers with acrylonitrile
    • 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
    • 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
    • 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
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to the technical field of high polymer materials, and provides a high-weather-resistance electric cable and a production process thereof. The high weather resistance electric cable comprises a sheath layer, an insulating layer and a conductor from outside to inside, wherein the sheath layer is made of sheath materials, and the sheath materials comprise the following components in parts by mass: 70 parts of NBR, 30 parts of EPDM, 3-8 parts of compatilizer, 3-7 parts of activator, 1.5-3.5 parts of anti-aging agent, 30-50 parts of filler, 3-8 parts of softener, 3-10 parts of plasticizer, 1.5-3.5 parts of vulcanizing agent and 0.5-1.5 parts of accelerator, wherein the compatilizer comprises a mixture of one of 3-hydroxy thiophenol and 4-hydroxy-3-methyl thiophenol and EPDM-g-MAH. Through the technical scheme, the problem of poor compatibility of NBR and EPDM in the prior art is solved.

Description

High-weather-resistance power cable and production process thereof
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a high-weather-resistance electric cable and a production process thereof.
Background
With the rapid development of economic construction in China, the demand of the power cable is continuously increased, the power cable generally comprises a conductor, an insulating layer and a sheath layer, and the performance of the sheath layer plays a decisive role in the performance of the power cable.
The electric cable with good weather resistance has long service life, and the weather resistance comprises water resistance, oil resistance, heat aging resistance, ozone resistance, ultraviolet aging resistance, chemical corrosion resistance and the like. Nitrile Butadiene Rubber (NBR) is a synthetic rubber formed by copolymerizing butadiene and acrylonitrile, and has good oil resistance, ultraviolet aging resistance and water resistance, but has general heat aging resistance; ethylene Propylene Diene Monomer (EPDM) has good ozone resistance, thermal aging resistance, chemical resistance, and has a disadvantage of poor oil resistance. The NBR and the EPDM are blended to integrate the performances of the two materials, so that the blended rubber material with good thermal aging resistance and oil resistance is obtained, but the solubility parameter delta value of the NBR is greatly different from that of the EPDM, the compatibility of the NBR and the EPDM is poor, and phase separation easily occurs, so that the comprehensive performance of the blended rubber material, particularly the thermal aging resistance, is reduced.
Disclosure of Invention
The invention provides a high-weather-resistance power cable and a production process thereof, and solves the problem of poor compatibility of NBR and EPDM in the related technology.
The technical scheme of the invention is as follows:
the high weather resistance electric cable comprises a sheath layer, an insulating layer and a conductor from outside to inside, wherein the sheath layer is made of a sheath material, and the sheath material comprises the following components in parts by mass: 70 parts of NBR, 30 parts of EPDM, 3-8 parts of compatilizer, 3-7 parts of activator, 1.5-3.5 parts of anti-aging agent, 30-50 parts of filler, 3-8 parts of softener, 3-10 parts of plasticizer, 1.5-3.5 parts of vulcanizing agent and 0.5-1.5 parts of accelerator,
the compatilizer comprises a mixture of EPDM-g-MAH and one of 3-hydroxy thiophenol and 4-hydroxy-3-methyl thiophenol.
EPDM-g-MAH is maleic anhydride grafted ethylene propylene diene monomer.
As a further technical scheme, the compatilizer comprises EPDM-g-MAH and 3-hydroxy thiophenol with the mass ratio of 2:3-4:1.
As a further technical scheme, the compatilizer comprises EPDM-g-MAH and 3-hydroxy thiophenol in a mass ratio of 3:2.
As a further technical solution, the filler comprises two different types of carbon black.
As a further embodiment, the filler comprises carbon black N660 and carbon black N539.
As a further embodiment, the carbon black N660 has a higher mass than the carbon black N539.
As a further technical solution, the mass of the carbon black N660 is 2 times higher than the mass of the carbon black N539.
As a further technical scheme, the mass ratio of the carbon black N660 to the carbon black N539 is 30:10-35:5.
As a further technical scheme, the activating agent comprises one or two of zinc oxide and stearic acid;
the anti-aging agent comprises one or more of an anti-aging agent RD, an anti-aging agent 2246 and an anti-aging agent H;
the softener comprises one or more of coumarone resin, paraffin and pine tar;
the plasticizer comprises one or more of dioctyl phthalate, dibutyl phthalate and dibutyl sebacate.
As a further technical scheme, the vulcanizing agent comprises one or more of sulfur and peroxide;
the accelerator comprises one or two of N-cyclohexyl-2-benzothiazole sulfonamide and tetramethyl thiuram disulfide.
The invention also provides a production process of the high-weather-resistance electric cable, which comprises the following steps of:
s1, coating an insulating layer outside a conductor to obtain a power cable semi-finished product;
s2, plasticating NBR and EPDM, adding a compatilizer, an activator, an anti-aging agent and a softener for primary mixing, adding a filler, a plasticizer, a vulcanizing agent and an accelerator for secondary mixing, vulcanizing, and coating the outside of the electric cable semi-finished product to obtain the high-weather-resistance electric cable.
The working principle and the beneficial effects of the invention are as follows:
1. the invention uses one of 3-hydroxy thiophenol and 4-hydroxy-3-methyl thiophenol and the mixture of EPDM-g-MAH as compatilizer, improves the compatibility of NBR and EPDM, improves the strength and thermal aging resistance of sheath materials, and provides a high weather resistance electric cable.
2. According to the invention, EPDM-g-MAH and 3-hydroxy thiophenol with the mass ratio of 2:3-4:1 are used as compatilizers, so that the strength and the thermal aging resistance of the sheath material are further improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
NBR in the following examples and comparative examples is nitrile rubber 3305E; EPDM is EPDM 4045M; the grafting ratio of MAH in EPDM-g-MAH was 1%.
Example 1
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 4 parts of EPDM-g-MAH, 1 part of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times of premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate for mixing by a cutting knife after wrapping, adding 660 parts of carbon black N after thinning uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethyl thiuram disulfide for mixing by a cutting knife, beating for triangle wrapping, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 2
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times of premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate for mixing by a cutting knife after wrapping, adding 660 parts of carbon black N after thinning uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethyl thiuram disulfide for mixing by a cutting knife, beating for triangle wrapping, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 3
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH 2, 3 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD, carrying out triangular package for 3 times and premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate for mixing by a cutting knife after roll wrapping, adding 660 parts of carbon black N after uniform thin pass, finally adding 2.5 parts of sulfur and 1 part of tetramethyl thiuram disulfide for mixing by a cutting knife, carrying out triangular package, carrying out uniform mixing, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 4
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 4-hydroxy-3-methyl thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roller for mixing, adding 660 parts of carbon black N after thinning uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide for mixing, grinding into a triangular bag, mixing uniformly, placing the lower sheet for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 5
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a roll, mixing by a cutting knife, adding 660 parts of carbon black and 550 parts of carbon black N after uniform thin pass, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, cutting into a triangle, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 6
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roll, mixing by a cutting knife, adding 660 parts of carbon black N and 539 parts of carbon black after thin-pass uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, grinding into a triangular bag, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 7
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roll, mixing by a cutting knife, adding 660 parts of carbon black N and 539 parts of carbon black after thin-pass uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, grinding into a triangular bag, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 8
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roll, mixing by a cutting knife, adding 660 parts of carbon black N and 539 parts of carbon black after thin-pass uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, grinding into a triangular bag, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 9
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roll, mixing by a cutting knife, adding 660 parts of carbon black N and 539 parts of carbon black after thin-pass uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, grinding into a triangular bag, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 10
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roll, mixing by a cutting knife, adding 660 parts of carbon black N and 539 parts of carbon black after thin-pass uniformly, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, grinding into a triangular bag, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Example 11
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 3 parts of EPDM-g-MAH, 2 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of antioxidant RD for 3 times, pre-mixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a wrapping roll, mixing by a cutting knife, adding 660 parts of carbon black N and 539 parts of carbon black after uniform thin pass, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, grinding into a triangular bag, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Comparative example 1
And plasticating 70 parts of NBR and 30 parts of EPDM in an open mill at 40 ℃ for 3 times, adding 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of an anti-aging agent RD, carrying out triangular package for 3 times, premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a package roller, carrying out cutting knife mixing, adding 660 parts of carbon black N after uniform thin pass, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, carrying out cutting knife mixing, carrying out triangular package, carrying out uniform mixing, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Comparative example 2
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 5 parts of EPDM-g-MAH, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of an anti-aging agent RD, performing triangular package for 3 times, premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a package roller, mixing by a cutting knife, adding 660 parts of carbon black N after uniform thinning, adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, performing triangular package, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Comparative example 3
And plasticating 70 parts of NBR and 30 parts of EPDM for 3 times in a 40 ℃ open mill, adding 5 parts of 3-hydroxy thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of an anti-aging agent RD, bagging for 3 times, premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate into a bag roller, mixing by a cutting knife, adding 660 parts of carbon black N after uniform thinning, adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide, mixing by a cutting knife, bagging uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Comparative example 4
Plasticizing 70 parts of NBR and 30 parts of EPDM in an open mill at 40 ℃ for 3 times, adding 5 parts of 4-hydroxy-3-methyl thiophenol, 3 parts of zinc oxide, 2 parts of stearic acid and 2.5 parts of an anti-aging agent RD, carrying out triangular package for 3 times, premixing uniformly, adding 5 parts of coumarone resin and 6 parts of dioctyl phthalate for mixing by a cutting knife after roll wrapping, adding 660 parts of carbon black N after uniform thin pass, finally adding 2.5 parts of sulfur and 1 part of tetramethylthiuram disulfide for mixing by a cutting knife, carrying out triangular package, mixing uniformly, placing the lower piece for 10 hours, and vulcanizing at 170 ℃ to obtain the sheath material.
Preparing a high weather resistance electric cable:
s1, coating an insulating layer outside a conductor to obtain a power cable semi-finished product for standby;
s2, respectively coating the sheath materials obtained in the examples 1-11 and the comparative examples 1-4 on the outer part of the semi-finished product of the electric cable to obtain the electric cable with high weather resistance.
The sheath materials obtained in examples 1 to 11 and comparative examples 1 to 4 were tested for tensile strength and elongation at break by referring to the method of GB/T2951.11-2008; the heat aging test was performed at 120℃for 48 hours by referring to the method of GB/T2951.12-2008, and the change rate of tensile strength and the change rate of elongation at break were calculated according to the following formulas, and the results are recorded in Table 1.
Tensile strength change rate (%) = (tensile strength after heat aging test-tensile strength before heat aging test)/(tensile strength before heat aging test) ×100)
Elongation at break change (%) = (elongation at break after heat aging test-elongation at break before heat aging test)/(elongation at break before heat aging test×100)
TABLE 1 thermal aging resistance of jacket materials
As can be seen from Table 1, the sheath material provided by the invention has high strength and good heat aging resistance.
Examples 1 to 4 are superior to comparative examples 1 to 4 in that EPDM-g-MAH and 3-hydroxybenzylthiophenol are added in examples 1 to 3, EPDM-g-MAH and 4-hydroxy-3-methylbenzylthiophenol are added in example 4, no compatibilizing agent is added in comparative example 1, EPDM-g-MAH is added in comparative example 2, 3-hydroxybenzylthiophenol is added in comparative example 3, 4-hydroxy-3-methylbenzylthiophenol is added in comparative example 4, and the strength and heat aging resistance of the jacket material obtained in examples 1 to 4 are superior to those of comparative examples 1 to 4, indicating that when EPDM-g-MAH and 3-hydroxybenzylthiophenol or EPDM-g-MAH and 4-hydroxy-3-methylbenzylthiophenol are used as compatibilizing agents, the effect of improving NBR and EPDM by using single EPDM-g-MAH, 3-hydroxybenzylthiophenol and 4-hydroxy-3-methylbenzylthiophenol is superior, and the strength and heat aging resistance of the jacket material can be greatly improved.
Examples 5 to 11 use two different types of carbon blacks in examples 5 to 11 compared with example 2, and only one type of carbon black is used in example 2, and the strength and heat aging resistance of the jacket material obtained in examples 5 to 11 are better than those of example 2, which means that the two different types of carbon blacks have better dispersibility in the jacket material and thus higher strength and good heat aging resistance than one type of carbon black.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (10)

1. The high weather resistance electric cable comprises a sheath layer, an insulating layer and a conductor from outside to inside, wherein the sheath layer is made of sheath materials, and the high weather resistance electric cable is characterized in that the sheath materials comprise the following components in parts by mass: 70 parts of NBR, 30 parts of EPDM, 3-8 parts of compatilizer, 3-7 parts of activator, 1.5-3.5 parts of anti-aging agent, 30-50 parts of filler, 3-8 parts of softener, 3-10 parts of plasticizer, 1.5-3.5 parts of vulcanizing agent and 0.5-1.5 parts of accelerator,
the compatilizer comprises a mixture of EPDM-g-MAH and one of 3-hydroxy thiophenol and 4-hydroxy-3-methyl thiophenol.
2. The high weather resistance electric cable according to claim 1, wherein the compatilizer comprises EPDM-g-MAH and 3-hydroxybenzene thiophenol in a mass ratio of 2:3-4:1.
3. The high weatherability power cable of claim 1, wherein the filler comprises two different types of carbon black.
4. A high weather resistant power cable according to claim 3, wherein the filler comprises carbon black N660 and carbon black N539.
5. The high weatherability power cable of claim 4, wherein the carbon black N660 is of a higher mass than carbon black N539.
6. The high weatherability power cable of claim 5, wherein the mass of carbon black N660 is 2 times higher than the mass of carbon black N539.
7. The high weather resistance electric cable of claim 6, wherein the mass ratio of carbon black N660 to carbon black N539 is 30:10-35:5.
8. The high weatherability power cable of claim 1, wherein the activator comprises one or both of zinc oxide, stearic acid;
the anti-aging agent comprises one or more of an anti-aging agent RD, an anti-aging agent 2246 and an anti-aging agent H;
the softener comprises one or more of coumarone resin, paraffin and pine tar;
the plasticizer comprises one or more of dioctyl phthalate, dibutyl phthalate and dibutyl sebacate.
9. The high weather resistant power cable according to claim 1, wherein the vulcanizing agent comprises one or more of sulfur and peroxide;
the accelerator comprises one or two of N-cyclohexyl-2-benzothiazole sulfonamide and tetramethyl thiuram disulfide.
10. The production process of the high-weather-resistance electric cable according to any one of claims 1 to 9, which is characterized by comprising the following steps:
s1, coating an insulating layer outside a conductor to obtain a power cable semi-finished product;
s2, plasticating NBR and EPDM, adding a compatilizer, an activator, an anti-aging agent and a softener for primary mixing, adding a filler, a plasticizer, a vulcanizing agent and an accelerator for secondary mixing, vulcanizing, and coating the outside of the electric cable semi-finished product to obtain the high-weather-resistance electric cable.
CN202311600055.1A 2023-11-28 2023-11-28 High-weather-resistance power cable and production process thereof Active CN117304590B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311600055.1A CN117304590B (en) 2023-11-28 2023-11-28 High-weather-resistance power cable and production process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311600055.1A CN117304590B (en) 2023-11-28 2023-11-28 High-weather-resistance power cable and production process thereof

Publications (2)

Publication Number Publication Date
CN117304590A true CN117304590A (en) 2023-12-29
CN117304590B CN117304590B (en) 2024-03-08

Family

ID=89281436

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311600055.1A Active CN117304590B (en) 2023-11-28 2023-11-28 High-weather-resistance power cable and production process thereof

Country Status (1)

Country Link
CN (1) CN117304590B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102796293A (en) * 2012-08-16 2012-11-28 中橡集团曙光橡胶工业研究设计院 High performance rubber sheath rubber material
WO2018130194A1 (en) * 2017-01-13 2018-07-19 杭州星庐科技有限公司 Rubber composite, processing method, rubber products applying composite, and manufacturing method
CN114350040A (en) * 2021-12-31 2022-04-15 南京利德东方橡塑科技有限公司 HNBR/NBR blended rubber material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102796293A (en) * 2012-08-16 2012-11-28 中橡集团曙光橡胶工业研究设计院 High performance rubber sheath rubber material
WO2018130194A1 (en) * 2017-01-13 2018-07-19 杭州星庐科技有限公司 Rubber composite, processing method, rubber products applying composite, and manufacturing method
CN114350040A (en) * 2021-12-31 2022-04-15 南京利德东方橡塑科技有限公司 HNBR/NBR blended rubber material and preparation method thereof

Also Published As

Publication number Publication date
CN117304590B (en) 2024-03-08

Similar Documents

Publication Publication Date Title
JP6473161B2 (en) Method for producing masterbatch, masterbatch obtained by the production method, rubber composition for tire and pneumatic tire
EP0066672B1 (en) Process for producing porous film or sheet
CN102382377B (en) Medium-voltage ethylene propylene rubber insulating material and preparation method thereof
CN103483707A (en) Process for preparing rubber cable sheath material
CN103483708B (en) Low-temperature-resistance flame-retardant rubber cable sheath material
CN109867830B (en) Anti-aging nitrile butadiene rubber/o-phenylenediamine modified graphene oxide composite material
CN111995820B (en) Polypropylene material and preparation method thereof
CN117304590B (en) High-weather-resistance power cable and production process thereof
CN101955601B (en) Chloroprene rubber improved by employing ionomer
CN109679170A (en) Ageing-resistant butadiene-styrene rubber of a kind of modified bamboo fiber enhancing and preparation method thereof
CN104861309A (en) Low temperature resistant EPDM (ethylene-propylene-diene monomer) cable material and preparation method thereof
KR101624589B1 (en) The preparing method of silica-polybutadiene composite material and the silica-polybutadiene composite material thereby
CN108659282B (en) Wide-temperature-range high-damping oil-resistant damping rubber composite material and preparation method thereof
CN114249947B (en) Rubber composition for fuel cell cooling tube and fuel cell cooling tube using the same
CN109320832A (en) EP rubbers semiconductive inner shield material that can be effectively crosslinked and preparation method thereof
CN102120835B (en) Method for processing high-molecular-weight rare earth butadiene rubber
CN115485886A (en) Dispersant composition for electrochemical device, conductive material dispersion for electrochemical device, slurry composition for electrochemical device electrode and method for producing same, electrode for electrochemical device, and electrochemical device
CN114044987A (en) Oil-resistant ethylene propylene insulating material
CN111440388A (en) Rubber sealing material for electrical equipment and preparation method thereof
CN105440364A (en) Anti-oxidation natural butadiene styrene insulating material taking HVA-2 as vulcanizing agent
CN112280196A (en) Insulating rubber sheet for capacitor and preparation method thereof
CN101570613A (en) Method of preparing sulfurized waterproof rolls by using butyl rubber plug leftover materials
CN104987583A (en) Ethylene-octene copolymer high performance composite material and preparation method thereof
CN112250914B (en) High-temperature aging resistant eucommia ulmoides rubber, eucommia ulmoides rubber vulcanized rubber and preparation method thereof
CN110734589A (en) Method for preparing emulsion polymerized styrene butadiene rubber from modified graphene

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant