WO2024007662A1 - Acid and alkali corrosion resistant cable sheath material and preparation method therefor, and acid and alkali corrosion resistant cable - Google Patents

Acid and alkali corrosion resistant cable sheath material and preparation method therefor, and acid and alkali corrosion resistant cable Download PDF

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Publication number
WO2024007662A1
WO2024007662A1 PCT/CN2023/087957 CN2023087957W WO2024007662A1 WO 2024007662 A1 WO2024007662 A1 WO 2024007662A1 CN 2023087957 W CN2023087957 W CN 2023087957W WO 2024007662 A1 WO2024007662 A1 WO 2024007662A1
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Prior art keywords
parts
acid
cable
preparation
sheath material
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PCT/CN2023/087957
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French (fr)
Chinese (zh)
Inventor
刘学宝
吴小敏
盛中红
姜一鑫
吴康杰
王亭
唐敏
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中辰电缆股份有限公司
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Publication of WO2024007662A1 publication Critical patent/WO2024007662A1/en

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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
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
    • C08L23/286—Chlorinated polyethylene
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2813—Protection against damage caused by electrical, chemical or water tree deterioration
    • 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
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/222—Magnesia, i.e. magnesium oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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

Definitions

  • the invention relates to the technical field of cable sheath materials, and in particular to an acid-alkali corrosion-resistant cable sheath material and a preparation method thereof and an acid-alkali corrosion-resistant cable.
  • a cable As a device for transmitting electrical energy, a cable is generally composed of a conductor core, an insulation layer and a sheath from the inside to the outside. Among them, the sheath is in direct contact with the usage environment of the cable and is used to protect the internal insulation layer and conductor core. If the sheath is damaged, the internal insulation layer will be in direct contact with the external usage environment and will be damaged and affect the normal operation of the cable. run. Therefore, the performance of the cable sheath directly affects the use of the cable.
  • the requirements for the cables used are more stringent.
  • the cables are usually required to have good corrosion resistance.
  • the cables are required to have Excellent mechanical properties. It is difficult for existing cable sheath materials to meet the above two requirements at the same time.
  • the present invention provides an acid and alkali corrosion resistant cable sheath material and a preparation method thereof and an acid and alkali corrosion resistant cable.
  • the corrosion-resistant cable sheath material provided by the invention has good corrosion resistance and excellent mechanical properties.
  • the invention provides an acid and alkali corrosion resistant cable sheath material.
  • the raw materials for preparation include the following components in terms of parts by mass:
  • the activity of the highly active magnesium oxide marked with citric acid is 12 to 20 seconds.
  • the environmentally friendly stabilizer includes an environmentally friendly calcium zinc stabilizer.
  • the acid and alkali resistant filler includes magnesium carbonate, aluminum hydroxide or barium sulfate.
  • the present invention also provides a method for preparing the sheath material described in the above technical solution, which includes the following steps:
  • the chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed film ;
  • the mixed film, bis-tert-butyl dicumyl peroxide, N,N'-m-phenylene bismaleimide and 2,2,4-trimethyl-1,2-dihydroquino The pholine polymer is mixed for the second time to obtain the sheath material.
  • the temperature of the first kneading is 150-170°C and the time is 6-10 minutes.
  • the second mixing temperature is 110-120°C and the time is 45-60 seconds.
  • the invention provides an acid and alkali corrosion-resistant cable.
  • the cable includes an insulated core and a sheath layer covering the outside of the insulated core.
  • the insulated core includes a conductor and a sheath layer covering the surface of the conductor. Insulating layer, the sheath layer is prepared from the sheath material described in the above technical solution or the sheath material prepared by the preparation method described in the above technical solution.
  • the conductor is a soft structural conductor made of round copper wires through bunching and compound twisting, and the material of the insulating layer is ethylene propylene rubber.
  • the invention provides a cable sheath material that is resistant to acid and alkali corrosion.
  • the preparation raw materials include the following components in terms of parts by mass: 100 parts of chlorinated polyethylene rubber; 8 to 12 parts of highly active magnesium oxide; and 4 to 12 parts of environmentally friendly stabilizers.
  • the chlorinated polyethylene rubber has good mechanical properties, processing properties and cold resistance.
  • Bis-tert-butylperoxide dicumyl peroxide (BIPB) and N, N'-m-phenylene bismaleimide are used.
  • Amine (PDM) serves as a vulcanizing agent and co-vulcanizing agent respectively, which enhances the cross-linking effect of chlorinated polyethylene rubber and improves the mechanical properties of the sheath material.
  • the present invention selects highly active magnesium oxide as the activator of the co-vulcanizing agent, which can reduce the amount of magnesium oxide while ensuring the activation effect, and reduce the adverse effects of acids and bases on the performance of the sheath.
  • magnesium oxide can absorb chlorinated polyethylene rubber
  • the hydrogen chloride generated by decomposition during use serves as a stabilizer to slow down the aging of the sheath material.
  • the present invention further improves the stabilizing effect by adding an environmentally friendly stabilizer.
  • the present invention uses antimony trioxide as the flame retardant. On the one hand, it can greatly improve the flame retardant effect of the sheath material. On the other hand, because antimony trioxide does not react with alkali, although it can react with acid, it is not flame retardant. The effect is good, so it can be added in small amounts to reduce the impact of acid and alkali environments on the mechanical properties of the sheath material.
  • the invention improves the acid and alkali resistance of the sheath material by adding acid and alkali resistant fillers.
  • the present invention improves the processing performance of the sheath material by adding microcrystalline wax as a plasticizer, and simultaneously improves the ozone resistance of the sheath material, and further improves the processing performance of the sheath material by adding dioctyl sebacate (DOS). and acid and alkali corrosion resistance.
  • DOS dioctyl sebacate
  • 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD) can improve the heat aging resistance of the cable and has little impact on vulcanization, which is beneficial to the sheathing material. Has good mechanical properties.
  • the present invention also provides a method for preparing the corrosion-resistant cable sheath material described in the above solution.
  • the preparation method provided by the invention adopts a two-step mixing method to uniformly mix and fully cross-link the components, thereby improving the acid and alkali corrosion resistance and mechanical properties of the sheath material.
  • the invention also provides an acid and alkali corrosion-resistant cable.
  • the cable includes an insulated core and a sheath material outside the insulated core.
  • the insulated core includes a conductor and an insulating layer on the surface of the conductor.
  • the sheath material is the sheath material described in the above technical solution or the sheath material prepared by the preparation method described in the above technical solution.
  • the embodiments of the present invention show that the cable prepared by using the sheath material of the present invention has good acid and alkali corrosion resistance and mechanical properties, and meets relevant national standards.
  • Figure 1 is a schematic diagram of the internal structure of the cable prepared in Example 1.
  • the invention provides an acid and alkali corrosion resistant cable sheath material.
  • the raw materials for preparation include the following components in terms of parts by mass:
  • preparation raw materials used in the present invention are all commercially available.
  • the raw materials for preparing the sheath material provided by the present invention include 100 parts of chlorinated polyethylene rubber.
  • the chlorinated polyethylene rubber is preferably a chlorinated polyethylene rubber with a high Mooney viscosity.
  • the Mooney viscosity of the chlorinated polyethylene rubber is preferably 50 to 70, more preferably 60 to 70, and further 70 is preferred.
  • the chlorine content of the high Mooney viscosity chlorinated polyethylene rubber is preferably 30% to 40%, and more preferably 35%.
  • the rubber with the above-mentioned Mooney viscosity and chlorine content is preferred in the present invention so that the sheath material has good mechanical properties, processing properties and cold resistance.
  • the raw materials for preparing the sheath material provided by the present invention include 8 to 12 parts of highly active magnesium oxide, preferably 9 to 11 parts, and more preferably 10 parts; the high activity
  • the activity of magnesium oxide is an activity (CAA value) expressed with citric acid of 12 to 20 s, more preferably 12 to 18 s, and even more preferably 13 to 15 s.
  • the present invention uses highly active magnesium oxide as the activator of the vulcanizing agent, which can reduce the dosage of magnesium oxide while ensuring the activation effect, so as to reduce the adverse effects of acids and bases on the performance of the sheath.
  • magnesium oxide can absorb chlorinated polyethylene.
  • the hydrogen chloride generated by the decomposition of ethylene rubber during use serves as a stabilizer to slow down the aging of the sheath material.
  • the preparation raw materials of the sheath material provided by the present invention includes 4 to 5 parts of environmentally friendly stabilizer, preferably 4 to 4.5 parts, more preferably 4 parts.
  • the environmentally friendly stabilizer preferably includes an environmentally friendly calcium-zinc stabilizer.
  • the environmentally-friendly calcium-zinc stabilizer is preferably a product of the KH-8201 model of Shanghai Naiao New Materials Co., Ltd.
  • the environmentally friendly calcium-zinc stabilizer used in the present invention can be combined with highly active magnesium oxide to further improve the stabilizing effect. At the same time, because it does not contain lead, it is more environmentally friendly than traditional lead-containing stabilizers.
  • the raw materials for preparing the sheath material provided by the present invention include 5 to 6 parts of microcrystalline wax, preferably 5 to 5.5 parts, and more preferably 5 parts.
  • microcrystalline wax as a plasticizer can improve the processing performance of the sheath material and enhance the ozone resistance of the sheath material.
  • the raw materials for preparing the sheath material provided by the present invention include 90 to 120 parts of acid and alkali resistant fillers, more preferably 95 to 110 parts, and further preferably 98 to 100 parts. Most preferably, it is 100 parts.
  • the acid and alkali resistant filler preferably includes magnesium carbonate, aluminum hydroxide or barium sulfate, more preferably aluminum hydroxide or barium sulfate, and most preferably barium sulfate.
  • barium sulfate is a component that does not react with acid and alkali and can improve the acid and alkali resistance of the sheath. At the same time, it has low oil absorption and can be added to chlorinated polyethylene rubber to improve the rubber material. of density.
  • the raw materials for preparing the sheath material provided by the present invention include 5 to 10 parts of antimony trioxide, more preferably 5.5 to 8 parts, further preferably 6 to 7 parts, and more Preferably it is 6 parts.
  • the antimony trioxide is used as a flame retardant. On the one hand, it can greatly improve the flame retardant effect of the sheath material. On the other hand, because antimony trioxide does not react with alkali, although it can react with acid, Reaction, but the flame retardant effect is good, so it can be added in small amounts to reduce the impact of acid-base environment on the mechanical properties of the sheath material.
  • the raw materials for preparing the sheath material provided by the invention include 1.5 to 3 parts of dicumyl peroxide, more preferably 1.6 to 2.5 parts, and further preferably 1.6 to 2.5 parts of dicumyl peroxide. 1.7 ⁇ 2 servings.
  • the raw materials for preparing the sheath material provided by the present invention include 0.5 to 1.5 parts of N, N'-m-phenylene bismaleimide, and more preferably 0.6 to 1.2 parts. , more preferably 0.7 to 1.0 parts.
  • the present invention preferably uses bis-tert-butyl dicumyl peroxide (BIPB) and N, N'-m-phenylene bismaleimide (PDM) as the vulcanizing agent and assistant vulcanizing agent respectively, which enhances the The cross-linking effect of chlorinated polyethylene rubber improves the mechanical properties of the sheath material.
  • BIPB bis-tert-butyl dicumyl peroxide
  • PDM N, N'-m-phenylene bismaleimide
  • the raw materials for preparing the sheath material provided by the invention include 1 to 2 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, and more Preferably it is 1.1-1.7, More preferably, it is 1.2-1.5 parts.
  • 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD) can improve the heat aging resistance of the cable and has less impact on the vulcanization reaction, which is beneficial to the protection of the cable.
  • the cover material has good mechanical properties.
  • the raw materials for preparing the sheath material provided by the present invention include 10 to 20 parts of dioctyl sebacate, more preferably 12 to 18 parts, and even more preferably 13 to 15 parts .
  • DOS dioctyl sebacate
  • the raw materials for preparing the sheath material provided by the invention include 13 to 25 parts of pigments and fillers.
  • the pigment and filler is preferably 15 to 24 parts, more preferably 16 to 23 parts, and further preferably 18 to 20 parts.
  • the pigment and filler is preferably Carbon black, the model of the carbon black is preferably N330; when the color of the material of the sheath is preferably colored, the pigment and filler is preferably 17 to 23 parts, more preferably 18 to 22 parts, and even more preferably 19 parts ⁇ 21 parts, the pigment and filler is preferably a mixture of nano-silica and color pigments, the color pigment is preferably light-fast yellow or light-fast red, the mass ratio of the nano-silica and the color pigment is preferably 2 ⁇ 6.7:1, more preferably 3 to 5.5:1, more preferably 3.5 to 4.5:1.
  • the present invention also provides a method for preparing the sheath material described in the above technical solution, which includes the following steps:
  • the chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed film ;
  • the mixed film, bis-tert-butyl dicumyl peroxide, N,N'-m-phenylene bismaleimide and 2,2,4-trimethyl-1,2-dihydroquino The pholine polymer is mixed for the second time to obtain the sheath material.
  • chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed mixture.
  • the first kneading is preferably performed in an internal mixer, and the internal mixer is preferably an internal mixer including an upper ejector bolt.
  • the temperature of the first kneading is preferably 150 to 170°C. More preferably, it is 155-160 degreeC, and the time is 6-10 minutes.
  • the first mixing when performing the first mixing, it is preferable to first mix with the upper ejector pin being put down for 3 to 5 minutes, then lift the upper ejector pin, mix for 1 to 2 minutes, and then put the upper ejector pin down for 1 to 2 minutes.
  • the plug is put down and mixed for 2 to 3 minutes to obtain a mixture; then the mixture is rolled, rolled and cooled in order to obtain a mixed film.
  • the thin pass rolling and rolling are conventional technical means well known to those skilled in the art.
  • the cooling is preferably performed at room temperature, and the cooling time is preferably 6 to 10 hours.
  • it is preferable to use the above-mentioned first mixing to fully disperse the raw materials during the stirring process, and at the same time destroy the original molecular structure of the chlorinated polyethylene rubber to prepare for the reaction in the second mixing.
  • the present invention combines the mixed film, dicumyl peroxide, N, N'-m-phenylene bismaleimide and 2,2,4-trimethyl -The 1,2-dihydroquinoline polymer is subjected to the second mixing to obtain the sheath material.
  • the second kneading is preferably performed in an internal mixer, and the internal mixer is preferably an internal mixer including an upper ejector bolt. In the specific embodiment of the present invention, it is preferable to perform the second kneading with the upper ejector pin lowered.
  • the temperature of the second kneading is preferably 110 to 120°C, and more preferably 113 to 115°C; the temperature of the second kneading is The time is preferably 45 to 60 seconds, more preferably 47 to 55 seconds, still more preferably 48 to 50 seconds.
  • the sheet rolling and sheet rolling are performed in sequence.
  • the sheet rolling and sheet rolling are conventional technical means well known to those skilled in the art.
  • the sheet rolling obtains
  • the width of the film is preferably 20 to 30 mm, and the thickness is preferably 0.4 to 0.6 mm.
  • the invention also provides an acid and alkali corrosion-resistant cable.
  • the cable includes an insulated core and a sheath layer covering the outside of the insulated core.
  • the insulated core includes a conductor and a sheath layer covering the surface of the conductor.
  • the insulation layer, the sheath layer is prepared from the sheath material described in the above technical solution or the sheath material prepared by the preparation method described in the above technical solution.
  • the sheath layer is preferably prepared outside the insulated wire core by extrusion.
  • the pressure of the vulcanized pipe used during the extrusion is preferably 1.1 to 1.5Mpa.
  • the extrusion pressure during the extrusion is
  • the discharge speed is preferably 6 to 10 m/min.
  • the conductor is preferably a soft structural conductor made of round copper wires through bunching and multiple twisting, and the material of the insulating layer is preferably ethylene propylene rubber.
  • the nominal thickness of the sheath layer is preferably 4.2 to 4.6 mm, more preferably 4.4 mm.
  • a method for preparing black chemical-resistant rubber cable including the following steps:
  • the conductor is prepared by using 268 fine round copper wires with a diameter of 0.40mm.
  • the conductors are bundled with 40 * 1 strand and 38 * 6 strand structures, and then arranged and compounded in a 1+6 structure.
  • Each layer of strands is The layers are twisted in the same direction, the outermost layer is twisted to the left, and the adjacent layers are twisted in the opposite direction, and are twisted to form a conductor;
  • the insulation layer is made of ethylene propylene rubber insulation material.
  • the nominal thickness of the insulation layer is 1.4mm.
  • the pressure of the vulcanized pipe is controlled at 1.1 ⁇ 1.5MPa during extrusion. between, the production speed is controlled between 30 ⁇ 34m/min;
  • the cable core made in step (3) is extruded with a sheath layer.
  • the sheath layer is made of acid and alkali corrosion resistant sheath material.
  • the nominal thickness of the sheath layer is 4.4mm.
  • the pressure of the vulcanized pipe is controlled during production. Between 1.1 ⁇ 1.5MPa, the production speed is controlled between 6 ⁇ 10m/min.
  • the cross-sectional structure of the prepared cable is shown in Figure 1.
  • Figure 1 is a schematic diagram of the cross-sectional structure of the cable prepared in Example 1.
  • the cable includes an insulated core and a sheath layer 3 covering the outside of the insulated core.
  • the insulated core includes a conductor 1 and an insulating layer 2 covering the surface of the conductor.
  • the raw materials of acid and alkali corrosion resistant sheath materials are as follows:
  • chlorinated polyethylene rubber chlorinated polyethylene rubber (chlorine content is 35%, Mooney viscosity is 65), 5.0 kg of highly active magnesium oxide (activity is marked with citric acid, the specific value is 12s), 2.0 kg of environmentally friendly calcium and zinc stabilizer, 2.5 kg Microcrystalline wax, 9.0 kg carbon black N330, 50 kg barium sulfate, 3.0 kg antimony trioxide, 0.9 kg BIPB, 0.4 kg PDM, 0.75 kg RD, 9.0 kg DOS.
  • the preparation method of acid and alkali corrosion resistant sheath material includes the following steps:
  • a preparation method of red chemical corrosion-resistant rubber cable including the following steps:
  • the conductor is prepared by using 268 fine round copper wires with a diameter of 0.40mm.
  • the conductors are bundled with 40 * 1 strand and 38 * 6 strand structures, and then arranged and compounded in a 1+6 structure.
  • Each layer of strands is The layers are twisted in the same direction, the outermost layer is twisted to the left, and the adjacent layers are twisted in the opposite direction, and are twisted to form a conductor;
  • the insulation layer is made of ethylene propylene rubber insulation material.
  • the nominal thickness of the insulation layer is 1.4mm.
  • the pressure of the vulcanized pipe is controlled at 1.1 ⁇ 1.5MPa during extrusion. between, the production speed is controlled between 30 ⁇ 34m/min;
  • the cable core made in step (3) is extruded with a sheath layer.
  • the sheath layer is made of acid and alkali corrosion resistant sheath material.
  • the nominal thickness of the sheath layer is 4.4mm.
  • the pressure of the vulcanized pipe is controlled during production. Between 1.1 ⁇ 1.5MPa, the production speed is controlled between 6 ⁇ 10m/min.
  • the raw materials of acid and alkali corrosion resistant sheath materials are as follows:
  • chlorinated polyethylene rubber chlorinated polyethylene rubber (chlorine content is 35%, Mooney viscosity is 60), 5.0 kilograms of highly active magnesium oxide (activity is marked with citric acid, the specific value is 14s.), 2.0 kilograms of environmentally friendly calcium and zinc stabilizer, 2.5 Kg of microcrystalline wax, 7.5 kilogram of nanosilica, 50 kilogram of barium sulfate, 3.0 kilogram of antimony trioxide, 0.75 kilogram of BIPB, 0.25 kilogram of PDM, 0.5 kilogram of RD, 5.0 kilogram of DOS, 2.0 kilogram of sunfast red.
  • the preparation method of acid and alkali corrosion resistant sheath material includes the following steps:
  • Example 1 A sheath test was conducted on the cables prepared in Example 1 and Example 2 (both specifications were YCW 450/750V 4 ⁇ 35mm 2 ), and the standards based on the sheath performance test were GB/T 5013-2008 and JB/T 8735-2016. The results of the sheath performance test are shown in Table 1.

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Abstract

The present invention relates to the technical field of cable sheath materials, and provides an acid and alkali corrosion resistant cable sheath material. The cable sheath material provided in the present invention is prepared from the following raw materials: 100 parts of a chlorinated polyethylene rubber, 8-12 parts of high-activity magnesium oxide, 4-5 parts of an environmentally friendly stabilizer, 5-6 parts of microcrystalline wax, 90-120 parts of an acid and alkali resistant filler, 5-10 parts of antimony trioxide, 1.5-3 parts of bistert-butylperoxydiisopropylbenzene, 0.5-1.5 parts of N,N'-m-phenylene dimaleimide, 1-2 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 10-20 parts of dioctyl sebacate and 13-25 parts of a pigment filler. By adjusting the types and proportions of preparation raw materials of the cable sheath in the present invention, the cable sheath material has good acid and alkali corrosion resistance and mechanical performance, and is suitable for preparing a cable used in acid and alkali environments.

Description

一种耐酸碱腐蚀电缆护套材料及其制备方法和一种耐酸碱腐蚀电缆Acid and alkali corrosion resistant cable sheath material and preparation method thereof and an acid and alkali corrosion resistant cable
本申请要求于2022年07月05日提交中国专利局、申请号为CN202210790391.6、发明名称为“一种耐酸碱腐蚀电缆护套材料及其制备方法和一种耐酸碱腐蚀电缆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application is required to be submitted to the China Patent Office on July 5, 2022. The application number is CN202210790391.6 and the invention is titled "Acid and alkali corrosion resistant cable sheath material and its preparation method and an acid and alkali corrosion resistant cable" The priority of the Chinese patent application, the entire content of which is incorporated into this application by reference.
技术领域Technical field
本发明涉及电缆护套材料技术领域，尤其涉及一种耐酸碱腐蚀电缆护套材料及其制备方法和一种耐酸碱腐蚀电缆。The invention relates to the technical field of cable sheath materials, and in particular to an acid-alkali corrosion-resistant cable sheath material and a preparation method thereof and an acid-alkali corrosion-resistant cable.
背景技术Background technique
作为一种用于传输电能的装置，电缆由内至外一般由导体线芯、绝缘层以及护套组成。其中，护套直接与电缆的使用环境接触，用于保护内部的绝缘层以及导线线芯，如果护套被破坏，内部的绝缘层会与外部使用环境直接接触，进而被破坏而影响电缆的正常运行。因此，电缆护套性能的好坏直接影响着电缆的使用情况。As a device for transmitting electrical energy, a cable is generally composed of a conductor core, an insulation layer and a sheath from the inside to the outside. Among them, the sheath is in direct contact with the usage environment of the cable and is used to protect the internal insulation layer and conductor core. If the sheath is damaged, the internal insulation layer will be in direct contact with the external usage environment and will be damaged and affect the normal operation of the cable. run. Therefore, the performance of the cable sheath directly affects the use of the cable.
在现有的工业领域中，诸如废水处理厂、化工厂、火电站、金属冶炼厂等生产场合，对于使用的电缆的要求更加严格，通常需要电缆具有良好的耐腐蚀性能，同时，要求电缆具有优异的机械性能。现有的电缆护套材料很难同时满足上述两种要求。In existing industrial fields, such as wastewater treatment plants, chemical plants, thermal power stations, metal smelting plants and other production sites, the requirements for the cables used are more stringent. The cables are usually required to have good corrosion resistance. At the same time, the cables are required to have Excellent mechanical properties. It is difficult for existing cable sheath materials to meet the above two requirements at the same time.
发明内容Contents of the invention
有鉴于此，本发明提供了一种耐酸碱腐蚀电缆护套材料及其制备方法和一种耐酸碱腐蚀电缆。本发明提供的耐腐蚀电缆护套材料具有良好的耐腐蚀性能和优异的机械性能。In view of this, the present invention provides an acid and alkali corrosion resistant cable sheath material and a preparation method thereof and an acid and alkali corrosion resistant cable. The corrosion-resistant cable sheath material provided by the invention has good corrosion resistance and excellent mechanical properties.
为了实现上述发明目的，本发明提供以下技术方案：In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:
本发明提供了一种耐酸碱腐蚀电缆护套材料，以质量份数计，制备原料包括以下组分：

The invention provides an acid and alkali corrosion resistant cable sheath material. The raw materials for preparation include the following components in terms of parts by mass:

所述高活性氧化镁用柠檬酸标示的活性为12～20s。The activity of the highly active magnesium oxide marked with citric acid is 12 to 20 seconds.
优选的，所述环保稳定剂包括环保钙锌稳定剂。Preferably, the environmentally friendly stabilizer includes an environmentally friendly calcium zinc stabilizer.
优选的，所述耐酸碱填充剂包括碳酸镁、氢氧化铝或硫酸钡。Preferably, the acid and alkali resistant filler includes magnesium carbonate, aluminum hydroxide or barium sulfate.
本发明还提供了上述技术方案所述护套材料的制备方法，包括以下步骤：The present invention also provides a method for preparing the sheath material described in the above technical solution, which includes the following steps:
将氯化聚乙烯橡胶、高活性氧化镁、环保稳定剂、微晶蜡、耐酸碱填充剂、三氧化二锑、癸二酸二辛酯和颜填料进行第一混炼，得到混炼胶片；The chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed film ;
将所述混炼胶片、双叔丁基过氧化二异丙苯、N，N’-间苯撑双马来酰亚胺和2，2，4-三甲基-1，2-二氢化喹啉聚合体进行第二混炼，得到所述护套材料。The mixed film, bis-tert-butyl dicumyl peroxide, N,N'-m-phenylene bismaleimide and 2,2,4-trimethyl-1,2-dihydroquino The pholine polymer is mixed for the second time to obtain the sheath material.
优选的，所述第一混炼的温度为150～170℃，时间为6～10分钟。Preferably, the temperature of the first kneading is 150-170°C and the time is 6-10 minutes.
优选的，所述第二混炼的温度为110～120℃，时间为45～60秒。Preferably, the second mixing temperature is 110-120°C and the time is 45-60 seconds.
本发明提供了一种耐酸碱腐蚀电缆，所述电缆包括绝缘线芯和包覆在所述绝缘线芯外部的护套层，所述绝缘线芯包括导体和包覆在所述导体表面的绝缘层，所述护套层由上述技术方案所述的护套材料或上述技术方案所述制备方法制备得到的护套材料制备得到。The invention provides an acid and alkali corrosion-resistant cable. The cable includes an insulated core and a sheath layer covering the outside of the insulated core. The insulated core includes a conductor and a sheath layer covering the surface of the conductor. Insulating layer, the sheath layer is prepared from the sheath material described in the above technical solution or the sheath material prepared by the preparation method described in the above technical solution.
优选的，所述导体为采用圆铜丝通过束绞和复绞制成的软结构导体，所述绝缘层的材料为乙丙橡胶。Preferably, the conductor is a soft structural conductor made of round copper wires through bunching and compound twisting, and the material of the insulating layer is ethylene propylene rubber.
本发明提供了一种耐酸碱腐蚀电缆护套材料，以质量份数计，制备原料包括以下组分：氯化聚乙烯橡胶100份；高活性氧化镁8～12份；环保稳定剂4～5份；微晶蜡5～6份；耐酸碱填充剂90～120份；三氧化二锑5～10份； 双叔丁基过氧化二异丙苯1.5～3份；N，N’-间苯撑双马来酰亚胺0.5～1.5份；2，2，4-三甲基-1，2-二氢化喹啉聚合体1～2份；癸二酸二辛酯10～20份；颜填料13～25份；所述高活性氧化镁用柠檬酸标示的活性为12～20s。在本发明中，氯化聚乙烯橡胶具有良好的机械性能、加工性能和耐寒性能，采用双叔丁基过氧化二异丙苯(BIPB)、N，N’-间苯撑双马来酰亚胺(PDM)分别作为硫化剂和助硫化剂，增强了氯化聚乙烯橡胶的交联效果，提高了护套材料的机械性能。本发明选用高活性氧化镁作为助硫化剂的活化剂，可以在保证活化效果的同时降低氧化镁的用量，减少酸碱对于护套性能的不利影响，同时，氧化镁可吸收氯化聚乙烯橡胶使用过程中分解生成的氯化氢，作为稳定剂减缓护套材料的老化，本发明还通过添加环保稳定剂进一步提高稳定效果。本发明选用三氧化二锑作为阻燃剂，一方面可以大大提高护套材料的阻燃效果，另一方面，由于三氧化二锑与碱不发生反应，虽然与酸可以发生反应，但阻燃效果好，因此可以少量添加，从而降低酸碱环境对护套材料机械性能的影响。本发明通过添加耐酸碱填充剂提高了护套材料的耐酸碱性。本发明通过添加微晶蜡作为增塑剂，提高护套材料的加工性能，同时提高护套材料的耐臭氧性，并通过添加癸二酸二辛酯(DOS)进一步提高护套材料的加工性能和耐酸碱腐蚀性能。在本发明中，2，2，4-三甲基-1，2-二氢化喹啉聚合体(RD)可以提高电缆的耐热老化性能，且对硫化影响较小，有利于使护套材料具有良好的机械性能。The invention provides a cable sheath material that is resistant to acid and alkali corrosion. The preparation raw materials include the following components in terms of parts by mass: 100 parts of chlorinated polyethylene rubber; 8 to 12 parts of highly active magnesium oxide; and 4 to 12 parts of environmentally friendly stabilizers. 5 parts; 5 to 6 parts of microcrystalline wax; 90 to 120 parts of acid and alkali resistant filler; 5 to 10 parts of antimony trioxide; 1.5 to 3 parts of bis-tert-butyl dicumyl peroxide; 0.5 to 1.5 parts of N, N'-m-phenylene bismaleimide; 2,2,4-trimethyl-1,2-dihydrogenation 1 to 2 parts of quinoline polymer; 10 to 20 parts of dioctyl sebacate; 13 to 25 parts of pigments and fillers; the activity of the highly active magnesium oxide marked with citric acid is 12 to 20 seconds. In the present invention, the chlorinated polyethylene rubber has good mechanical properties, processing properties and cold resistance. Bis-tert-butylperoxide dicumyl peroxide (BIPB) and N, N'-m-phenylene bismaleimide are used. Amine (PDM) serves as a vulcanizing agent and co-vulcanizing agent respectively, which enhances the cross-linking effect of chlorinated polyethylene rubber and improves the mechanical properties of the sheath material. The present invention selects highly active magnesium oxide as the activator of the co-vulcanizing agent, which can reduce the amount of magnesium oxide while ensuring the activation effect, and reduce the adverse effects of acids and bases on the performance of the sheath. At the same time, magnesium oxide can absorb chlorinated polyethylene rubber The hydrogen chloride generated by decomposition during use serves as a stabilizer to slow down the aging of the sheath material. The present invention further improves the stabilizing effect by adding an environmentally friendly stabilizer. The present invention uses antimony trioxide as the flame retardant. On the one hand, it can greatly improve the flame retardant effect of the sheath material. On the other hand, because antimony trioxide does not react with alkali, although it can react with acid, it is not flame retardant. The effect is good, so it can be added in small amounts to reduce the impact of acid and alkali environments on the mechanical properties of the sheath material. The invention improves the acid and alkali resistance of the sheath material by adding acid and alkali resistant fillers. The present invention improves the processing performance of the sheath material by adding microcrystalline wax as a plasticizer, and simultaneously improves the ozone resistance of the sheath material, and further improves the processing performance of the sheath material by adding dioctyl sebacate (DOS). and acid and alkali corrosion resistance. In the present invention, 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD) can improve the heat aging resistance of the cable and has little impact on vulcanization, which is beneficial to the sheathing material. Has good mechanical properties.
本发明还提供了上述方案所述耐腐蚀电缆护套材料的制备方法。本发明提供的制备方法通过采用两步混炼的方式，使各组分均匀混合以及充分交联反应，提高了护套材料的耐酸碱腐蚀性能以及机械性能。The present invention also provides a method for preparing the corrosion-resistant cable sheath material described in the above solution. The preparation method provided by the invention adopts a two-step mixing method to uniformly mix and fully cross-link the components, thereby improving the acid and alkali corrosion resistance and mechanical properties of the sheath material.
本发明还提供了一种耐酸碱腐蚀电缆，所述电缆包括绝缘线芯和所述绝缘线芯外部的护套材料，所述绝缘线芯包括导体和所述导体表面的绝缘层，所述护套材料为上述技术方案所述的护套材料或上述技术方案所述制备方法制备得到的护套材料。本发明的实施例表明，采用本发明护套材料制备得到的电缆具有良好的耐酸碱腐蚀性能和机械性能，满足相关国家标准。The invention also provides an acid and alkali corrosion-resistant cable. The cable includes an insulated core and a sheath material outside the insulated core. The insulated core includes a conductor and an insulating layer on the surface of the conductor. The sheath material is the sheath material described in the above technical solution or the sheath material prepared by the preparation method described in the above technical solution. The embodiments of the present invention show that the cable prepared by using the sheath material of the present invention has good acid and alkali corrosion resistance and mechanical properties, and meets relevant national standards.
附图说明Description of the drawings
图1为实施例1制备得到的电缆内部结构示意图。 Figure 1 is a schematic diagram of the internal structure of the cable prepared in Example 1.
具体实施方式Detailed ways
本发明提供了一种耐酸碱腐蚀电缆护套材料，以质量份数计，制备原料包括以下组分：
The invention provides an acid and alkali corrosion resistant cable sheath material. The raw materials for preparation include the following components in terms of parts by mass:
如无特殊说明，本发明使用的制备原料均为市售。Unless otherwise specified, the preparation raw materials used in the present invention are all commercially available.
以质量份数计，本发明提供的护套材料的制备原料包括氯化聚乙烯橡胶100份。在本发明中，所述氯化聚乙烯橡胶优选为高门尼粘度的氯化聚乙烯橡胶，所述氯化聚乙烯橡胶的门尼粘度优选为50～70，更优选为60～70，进一步优选为70。所述高门尼粘度的氯化聚乙烯橡胶的氯含量优选为30～40％，更优选为35％。本发明优选上述门尼粘度和氯含量的橡胶可以使护套材料具有良好的机械性能、加工性能和耐寒性能。In parts by mass, the raw materials for preparing the sheath material provided by the present invention include 100 parts of chlorinated polyethylene rubber. In the present invention, the chlorinated polyethylene rubber is preferably a chlorinated polyethylene rubber with a high Mooney viscosity. The Mooney viscosity of the chlorinated polyethylene rubber is preferably 50 to 70, more preferably 60 to 70, and further 70 is preferred. The chlorine content of the high Mooney viscosity chlorinated polyethylene rubber is preferably 30% to 40%, and more preferably 35%. The rubber with the above-mentioned Mooney viscosity and chlorine content is preferred in the present invention so that the sheath material has good mechanical properties, processing properties and cold resistance.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括高活性氧化镁8～12份，优选为9～11份，更优选为10份；所述高活性氧化镁的活性为用柠檬酸标示的活性(CAA值)为12～20s，更优选为12～18s，进一步优选为13～15s。本发明将高活性氧化镁作为助硫化剂的活化剂使用，可以在保证活化效果的同时降低氧化镁的用量，以减少酸碱对于护套性能的不利影响，同时，氧化镁可吸收氯化聚乙烯橡胶使用过程中分解生成的氯化氢，作为稳定剂减缓护套材料的老化。Based on the mass fraction of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the present invention include 8 to 12 parts of highly active magnesium oxide, preferably 9 to 11 parts, and more preferably 10 parts; the high activity The activity of magnesium oxide is an activity (CAA value) expressed with citric acid of 12 to 20 s, more preferably 12 to 18 s, and even more preferably 13 to 15 s. The present invention uses highly active magnesium oxide as the activator of the vulcanizing agent, which can reduce the dosage of magnesium oxide while ensuring the activation effect, so as to reduce the adverse effects of acids and bases on the performance of the sheath. At the same time, magnesium oxide can absorb chlorinated polyethylene. The hydrogen chloride generated by the decomposition of ethylene rubber during use serves as a stabilizer to slow down the aging of the sheath material.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原 料包括环保稳定剂4～5份，优选为4～4.5份，更优选为4份。在本发明中，所述环保稳定剂优选包括环保钙锌稳定剂，在本发明的具体实施例中，所述环保钙锌稳定剂优选为上海纳奥新材料有限公司KH-8201型号的产品。本发明采用的环保钙锌稳定剂可以配合高活性氧化镁进一步提高稳定效果，同时，由于不含有铅元素，其与传统的含铅类稳定剂相比更具有环保性。Based on the mass fraction of chlorinated polyethylene rubber, the preparation raw materials of the sheath material provided by the present invention The material includes 4 to 5 parts of environmentally friendly stabilizer, preferably 4 to 4.5 parts, more preferably 4 parts. In the present invention, the environmentally friendly stabilizer preferably includes an environmentally friendly calcium-zinc stabilizer. In a specific embodiment of the invention, the environmentally-friendly calcium-zinc stabilizer is preferably a product of the KH-8201 model of Shanghai Naiao New Materials Co., Ltd. The environmentally friendly calcium-zinc stabilizer used in the present invention can be combined with highly active magnesium oxide to further improve the stabilizing effect. At the same time, because it does not contain lead, it is more environmentally friendly than traditional lead-containing stabilizers.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括微晶蜡5～6份，优选为5～5.5份，更优选为5份。在本发明中，微晶蜡作为增塑剂可以提高护套材料的加工性能，同时增强护套材料的耐臭氧性。Based on the mass parts of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the present invention include 5 to 6 parts of microcrystalline wax, preferably 5 to 5.5 parts, and more preferably 5 parts. In the present invention, microcrystalline wax as a plasticizer can improve the processing performance of the sheath material and enhance the ozone resistance of the sheath material.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括耐酸碱填充剂90～120份，更优选为95～110份，进一步优选为98～100份，最优选为100份。在本发明中，所述耐酸碱填充剂优选包括碳酸镁、氢氧化铝或硫酸钡，更优选为氢氧化铝或硫酸钡，最优选为硫酸钡。在本发明中，硫酸钡是一种与酸碱不发生任何反应的组分，可以提高护套的耐酸碱性能，同时，其吸油性低，添加到氯化聚乙烯橡胶中能够提高橡胶材料的致密性。Based on the mass parts of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the present invention include 90 to 120 parts of acid and alkali resistant fillers, more preferably 95 to 110 parts, and further preferably 98 to 100 parts. Most preferably, it is 100 parts. In the present invention, the acid and alkali resistant filler preferably includes magnesium carbonate, aluminum hydroxide or barium sulfate, more preferably aluminum hydroxide or barium sulfate, and most preferably barium sulfate. In the present invention, barium sulfate is a component that does not react with acid and alkali and can improve the acid and alkali resistance of the sheath. At the same time, it has low oil absorption and can be added to chlorinated polyethylene rubber to improve the rubber material. of density.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括三氧化二锑5～10份，更优选为5.5～8份，进一步优选为6～7份，更优选为6份。在本发明中，所述三氧化二锑作为阻燃剂使用，一方面可以大大提高护套材料的阻燃效果，另一方面，由于三氧化二锑与碱不发生反应，虽然与酸可以发生反应，但阻燃效果好，因此可以少量添加，从而降低酸碱环境对护套材料机械性能的影响。Based on the mass fraction of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the present invention include 5 to 10 parts of antimony trioxide, more preferably 5.5 to 8 parts, further preferably 6 to 7 parts, and more Preferably it is 6 parts. In the present invention, the antimony trioxide is used as a flame retardant. On the one hand, it can greatly improve the flame retardant effect of the sheath material. On the other hand, because antimony trioxide does not react with alkali, although it can react with acid, Reaction, but the flame retardant effect is good, so it can be added in small amounts to reduce the impact of acid-base environment on the mechanical properties of the sheath material.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括双叔丁基过氧化二异丙苯1.5～3份，更优选为1.6～2.5份，进一步优选为1.7～2份。Based on the mass fraction of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the invention include 1.5 to 3 parts of dicumyl peroxide, more preferably 1.6 to 2.5 parts, and further preferably 1.6 to 2.5 parts of dicumyl peroxide. 1.7~2 servings.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括N，N’-间苯撑双马来酰亚胺0.5～1.5份，更优选为0.6～1.2份，进一步优选为0.7～1.0份。本发明优选采用双叔丁基过氧化二异丙苯(BIPB)、N，N’-间苯撑双马来酰亚胺(PDM)分别作为硫化剂和助硫化剂，增强了 氯化聚乙烯橡胶的交联效果，提高了护套材料的机械性能。Based on the mass fraction of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the present invention include 0.5 to 1.5 parts of N, N'-m-phenylene bismaleimide, and more preferably 0.6 to 1.2 parts. , more preferably 0.7 to 1.0 parts. The present invention preferably uses bis-tert-butyl dicumyl peroxide (BIPB) and N, N'-m-phenylene bismaleimide (PDM) as the vulcanizing agent and assistant vulcanizing agent respectively, which enhances the The cross-linking effect of chlorinated polyethylene rubber improves the mechanical properties of the sheath material.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括2，2，4-三甲基-1，2-二氢化喹啉聚合体1～2份，更优选为1.1～1.7，进一步优选为1.2～1.5份。在本发明中，2，2，4-三甲基-1，2-二氢化喹啉聚合体(RD)可以提高电缆的耐热老化性能，且对硫化反应的影响较小，有利于使护套材料具有良好的机械性能。Based on the mass fraction of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the invention include 1 to 2 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, and more Preferably it is 1.1-1.7, More preferably, it is 1.2-1.5 parts. In the present invention, 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD) can improve the heat aging resistance of the cable and has less impact on the vulcanization reaction, which is beneficial to the protection of the cable. The cover material has good mechanical properties.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括癸二酸二辛酯10～20份，更优选为12～18份，进一步优选为13～15份。本发明优选添加上述含量的癸二酸二辛酯(DOS)能够进一步提高护套材料的加工性能和耐酸碱腐蚀性能。Based on the mass parts of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the present invention include 10 to 20 parts of dioctyl sebacate, more preferably 12 to 18 parts, and even more preferably 13 to 15 parts . In the present invention, it is preferred to add the above content of dioctyl sebacate (DOS) to further improve the processing performance and acid and alkali corrosion resistance of the sheath material.
以氯化聚乙烯橡胶的质量份数为基准，本发明提供的护套材料的制备原料包括颜填料13～25份。在本发明中，当所述护套材料的颜色为黑色时，所述颜填料优选为15～24份，更优选为16～23份，进一步优选为18～20份，所述颜填料优选为炭黑，所述炭黑的型号优选为N330；当所述护套的材料的颜色优选为彩色时，所述颜填料优选为17～23份，更优选为18～22份，进一步优选为19～21份，所述颜填料优选为纳米硅土和彩色颜料的混合物，所述彩色颜料优选为耐晒黄或耐晒红，所述纳米硅土和所述彩色颜料的质量比优选为2～6.7:1，进一步优选为3～5.5:1，更优选为3.5～4.5:1。Based on the mass parts of chlorinated polyethylene rubber, the raw materials for preparing the sheath material provided by the invention include 13 to 25 parts of pigments and fillers. In the present invention, when the color of the sheath material is black, the pigment and filler is preferably 15 to 24 parts, more preferably 16 to 23 parts, and further preferably 18 to 20 parts. The pigment and filler is preferably Carbon black, the model of the carbon black is preferably N330; when the color of the material of the sheath is preferably colored, the pigment and filler is preferably 17 to 23 parts, more preferably 18 to 22 parts, and even more preferably 19 parts ~21 parts, the pigment and filler is preferably a mixture of nano-silica and color pigments, the color pigment is preferably light-fast yellow or light-fast red, the mass ratio of the nano-silica and the color pigment is preferably 2~ 6.7:1, more preferably 3 to 5.5:1, more preferably 3.5 to 4.5:1.
本发明还提供了上述技术方案所述护套材料的制备方法，包括以下步骤：The present invention also provides a method for preparing the sheath material described in the above technical solution, which includes the following steps:
将氯化聚乙烯橡胶、高活性氧化镁、环保稳定剂、微晶蜡、耐酸碱填充剂、三氧化二锑、癸二酸二辛酯和颜填料进行第一混炼，得到混炼胶片；The chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed film ;
将所述混炼胶片、双叔丁基过氧化二异丙苯、N，N’-间苯撑双马来酰亚胺和2，2，4-三甲基-1，2-二氢化喹啉聚合体进行第二混炼，得到所述护套材料。The mixed film, bis-tert-butyl dicumyl peroxide, N,N'-m-phenylene bismaleimide and 2,2,4-trimethyl-1,2-dihydroquino The pholine polymer is mixed for the second time to obtain the sheath material.
本发明将氯化聚乙烯橡胶、高活性氧化镁、环保稳定剂、微晶蜡、耐酸碱填充剂、三氧化二锑、癸二酸二辛酯和颜填料进行第一混炼，得到混炼胶片。在本发明中，所述第一混炼优选在密炼机中进行，所述密炼机优选为包含上顶栓的密炼机。在本发明中，所述第一混炼的温度优选为150～170℃， 更优选为155～160℃，时间优选为6～10分钟。本发明具体实施例进行所述第一混炼时，优选先在上顶栓处于放下状态的条件下混炼3～5分钟，之后提起上顶栓，混炼1～2分钟，再将上顶栓放下，混炼2～3分钟，得到混合料；然后将所述混合料依次进行薄通打卷、辗片和冷却，得到混炼胶片。在本发明中，所述薄通打卷和辗片为本领域技术人员熟知的常规技术手段，所述冷却优选在室温下进行，所述冷却的时间优选为6～10小时。本发明优选通过上述第一混炼，使原料在搅拌的过程充分分散，同时使氯化聚乙烯橡胶中的原分子结构破坏，为第二混炼中的反应作准备。In the present invention, chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed mixture. Refined rubber sheet. In the present invention, the first kneading is preferably performed in an internal mixer, and the internal mixer is preferably an internal mixer including an upper ejector bolt. In the present invention, the temperature of the first kneading is preferably 150 to 170°C. More preferably, it is 155-160 degreeC, and the time is 6-10 minutes. In the specific embodiment of the present invention, when performing the first mixing, it is preferable to first mix with the upper ejector pin being put down for 3 to 5 minutes, then lift the upper ejector pin, mix for 1 to 2 minutes, and then put the upper ejector pin down for 1 to 2 minutes. The plug is put down and mixed for 2 to 3 minutes to obtain a mixture; then the mixture is rolled, rolled and cooled in order to obtain a mixed film. In the present invention, the thin pass rolling and rolling are conventional technical means well known to those skilled in the art. The cooling is preferably performed at room temperature, and the cooling time is preferably 6 to 10 hours. In the present invention, it is preferable to use the above-mentioned first mixing to fully disperse the raw materials during the stirring process, and at the same time destroy the original molecular structure of the chlorinated polyethylene rubber to prepare for the reaction in the second mixing.
得到混炼胶片后，本发明将所述混炼胶片、双叔丁基过氧化二异丙苯、N，N’-间苯撑双马来酰亚胺和2，2，4-三甲基-1，2-二氢化喹啉聚合体进行第二混炼，得到所述护套材料。在本发明中，所述第二混炼优选在密炼机中进行，所述密炼机优选为包含上顶栓的密炼机。本发明具体实施例优选在上顶栓放下的状态下进行第二混炼，所述第二混炼的温度优选为110～120℃，更优选为113～115℃；所述第二混炼的时间优选为45～60秒，更优选为47～55秒，进一步优选为48～50秒。本发明优选通过上述第二混炼使氯化聚乙烯橡胶分子和硫化剂以及助硫化剂充分混合和反应，提高了橡胶内部分子的交联效果，提高了护套材料的机械性能。在本发明中，所述第二混炼后还包括依次进行的薄通打卷和辗片，所述薄通打卷和辗片为本领域技术人员熟知的常规技术手段，所述辗片得到的胶片的宽度优选为20～30mm，厚度优选为0.4～0.6mm。After obtaining the mixed film, the present invention combines the mixed film, dicumyl peroxide, N, N'-m-phenylene bismaleimide and 2,2,4-trimethyl -The 1,2-dihydroquinoline polymer is subjected to the second mixing to obtain the sheath material. In the present invention, the second kneading is preferably performed in an internal mixer, and the internal mixer is preferably an internal mixer including an upper ejector bolt. In the specific embodiment of the present invention, it is preferable to perform the second kneading with the upper ejector pin lowered. The temperature of the second kneading is preferably 110 to 120°C, and more preferably 113 to 115°C; the temperature of the second kneading is The time is preferably 45 to 60 seconds, more preferably 47 to 55 seconds, still more preferably 48 to 50 seconds. In the present invention, it is preferable to fully mix and react the chlorinated polyethylene rubber molecules with the vulcanizing agent and co-vulcanizing agent through the above-mentioned second mixing, thereby improving the cross-linking effect of the internal molecules of the rubber and improving the mechanical properties of the sheath material. In the present invention, after the second mixing, the sheet rolling and sheet rolling are performed in sequence. The sheet rolling and sheet rolling are conventional technical means well known to those skilled in the art. The sheet rolling obtains The width of the film is preferably 20 to 30 mm, and the thickness is preferably 0.4 to 0.6 mm.
本发明还提供了一种耐酸碱腐蚀电缆，所述电缆包括绝缘线芯和包覆在所述绝缘线芯外部的护套层，所述绝缘线芯包括导体和包覆在所述导体表面的绝缘层，所述护套层由上述技术方案所述的护套材料或上述技术方案所述制备方法制备得到的护套材料制备得到。本发明的具体实施例优选通过挤包的方式在所述绝缘线芯外部制备所述护套层，所述挤包时所用硫化管道的压力优选为1.1～1.5Mpa，所述挤包时的挤出速度优选为6～10m/min。在本发明中，所述导体优选为采用圆铜丝通过束绞和复绞制成的软结构导体，所述绝缘层的材料优选为乙丙橡胶。在本发明中，所述护套层的标称厚度优选为4.2～4.6mm，更优选为4.4mm。 The invention also provides an acid and alkali corrosion-resistant cable. The cable includes an insulated core and a sheath layer covering the outside of the insulated core. The insulated core includes a conductor and a sheath layer covering the surface of the conductor. The insulation layer, the sheath layer is prepared from the sheath material described in the above technical solution or the sheath material prepared by the preparation method described in the above technical solution. In specific embodiments of the present invention, the sheath layer is preferably prepared outside the insulated wire core by extrusion. The pressure of the vulcanized pipe used during the extrusion is preferably 1.1 to 1.5Mpa. The extrusion pressure during the extrusion is The discharge speed is preferably 6 to 10 m/min. In the present invention, the conductor is preferably a soft structural conductor made of round copper wires through bunching and multiple twisting, and the material of the insulating layer is preferably ethylene propylene rubber. In the present invention, the nominal thickness of the sheath layer is preferably 4.2 to 4.6 mm, more preferably 4.4 mm.
下面将结合本发明中的实施例，对本发明中的技术方案进行清楚、完整地描述。The technical solutions in the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
实施例1Example 1
一种黑色耐化学腐蚀橡胶电缆的制备方法，包括以下步骤：A method for preparing black chemical-resistant rubber cable, including the following steps:
(1)导体采用268根直径为0.40mm细圆铜丝进行制备，采用40根*1股和38根*6股结构束绞，之后采用1+6结构进行排列复绞，每层股线和该层复绞绞向相同，最外层绞向为左向，相邻层绞向相反，绞合制成导体；(1) The conductor is prepared by using 268 fine round copper wires with a diameter of 0.40mm. The conductors are bundled with 40 * 1 strand and 38 * 6 strand structures, and then arranged and compounded in a 1+6 structure. Each layer of strands is The layers are twisted in the same direction, the outermost layer is twisted to the left, and the adjacent layers are twisted in the opposite direction, and are twisted to form a conductor;
(2)在步骤(1)制成的导体外表面挤包绝缘层，绝缘层采用乙丙橡胶绝缘材料，绝缘层的标称厚度为1.4mm，挤包时硫化管道压力控制在1.1～1.5MPa之间，生产速度控制在30～34m/min之间；(2) Extrude an insulation layer on the outer surface of the conductor made in step (1). The insulation layer is made of ethylene propylene rubber insulation material. The nominal thickness of the insulation layer is 1.4mm. The pressure of the vulcanized pipe is controlled at 1.1~1.5MPa during extrusion. between, the production speed is controlled between 30~34m/min;
(3)将步骤(2)制备得到的绝缘线芯进行绞合成缆，得到缆芯；(3) Twisting the insulated wire cores prepared in step (2) into a cable to obtain a cable core;
(4)在步骤(3)制成的缆芯外挤包护套层，护套层采用耐酸碱腐蚀护套材料制备，护套层的标称厚度为4.4mm，生产时硫化管道压力控制在1.1～1.5MPa之间，生产速度控制在6～10m/min之间。制备得到的电缆横截面结构如图1所示，图1为实施例1制备得到的电缆横截面结构示意图。其中，电缆包括绝缘线芯和包覆在所述绝缘线芯外部的护套层3，所述绝缘线芯包括导体1和包覆在所述导体表面的绝缘层2。(4) The cable core made in step (3) is extruded with a sheath layer. The sheath layer is made of acid and alkali corrosion resistant sheath material. The nominal thickness of the sheath layer is 4.4mm. The pressure of the vulcanized pipe is controlled during production. Between 1.1～1.5MPa, the production speed is controlled between 6～10m/min. The cross-sectional structure of the prepared cable is shown in Figure 1. Figure 1 is a schematic diagram of the cross-sectional structure of the cable prepared in Example 1. The cable includes an insulated core and a sheath layer 3 covering the outside of the insulated core. The insulated core includes a conductor 1 and an insulating layer 2 covering the surface of the conductor.
耐酸碱腐蚀护套材料的原料如下：The raw materials of acid and alkali corrosion resistant sheath materials are as follows:
50千克氯化聚乙烯橡胶(氯含量为35％，门尼粘度为65)、5.0千克高活性氧化镁(活性以柠檬酸标示，具体值为12s)、2.0千克环保钙锌稳定剂、2.5千克微晶蜡、9.0千克炭黑N330、50千克硫酸钡、3.0千克三氧化二锑、0.9千克BIPB、0.4千克PDM、0.75千克RD、9.0千克DOS。50 kg of chlorinated polyethylene rubber (chlorine content is 35%, Mooney viscosity is 65), 5.0 kg of highly active magnesium oxide (activity is marked with citric acid, the specific value is 12s), 2.0 kg of environmentally friendly calcium and zinc stabilizer, 2.5 kg Microcrystalline wax, 9.0 kg carbon black N330, 50 kg barium sulfate, 3.0 kg antimony trioxide, 0.9 kg BIPB, 0.4 kg PDM, 0.75 kg RD, 9.0 kg DOS.
耐酸碱腐蚀护套材料的制备方法，包括以下步骤：The preparation method of acid and alkali corrosion resistant sheath material includes the following steps:
(1)将50千克氯化聚乙烯橡胶、9.0千克炭黑N330、50千克硫酸钡、3.0千克三氧化二锑、5.0千克高活性氧化镁、2.0千克环保钙锌稳定剂、2.5千克微晶蜡和9.0千克DOS加入到密炼机中，放下上顶栓，密炼温度控制在155℃，密炼3分钟，然后提起上顶栓，1分钟后再次放下上顶栓，密炼2分钟，提起上顶栓，打开下料门，将混合料卸出，转入开炼机薄通打卷，在室温下停放冷却8小时，得到混炼胶片； (1) Combine 50 kg of chlorinated polyethylene rubber, 9.0 kg of carbon black N330, 50 kg of barium sulfate, 3.0 kg of antimony trioxide, 5.0 kg of highly active magnesium oxide, 2.0 kg of environmentally friendly calcium zinc stabilizer, and 2.5 kg of microcrystalline wax and 9.0 kg of DOS into the internal mixer, lower the upper ejector bolt, control the mixing temperature at 155°C, and mix for 3 minutes. Then lift the upper ejector bolt. After 1 minute, lower the upper ejector bolt again and mix for 2 minutes. Lift up the upper ejector bolt. Lift the top bolt, open the unloading door, unload the mixture, transfer it to the open mill for rolling, and leave it to cool at room temperature for 8 hours to obtain the mixed film;
(2)将130.5千克混炼胶片、0.9千克BIPB、0.4千克PDM和0.75千克RD投入密炼机中，放下上顶栓，密炼温度控制在110℃，密炼45秒，提起上顶栓，打开下料门，将混合料卸出，转入开炼机薄通打卷；(2) Put 130.5 kg of mixed film, 0.9 kg of BIPB, 0.4 kg of PDM and 0.75 kg of RD into the internal mixer, put down the top bolt, control the mixing temperature at 110°C, mix for 45 seconds, lift the top bolt, Open the unloading door, unload the mixture, and transfer it to the open mill for rolling;
(3)将薄通后打成的胶卷投入辗页机，开启冷却水后，将切割后的胶片一次穿过八个冷却滚筒，再穿过隔离粉槽，最后制成宽度为20mm，厚度为0.5mm的胶片。(3) Put the thinned film into the rolling machine, turn on the cooling water, pass the cut film through eight cooling rollers at a time, and then through the isolation powder tank, and finally make it into a width of 20mm and a thickness of 0.5mm film.
实施例2Example 2
一种红色耐化学腐蚀橡胶电缆的制备方法，包括以下步骤：A preparation method of red chemical corrosion-resistant rubber cable, including the following steps:
(1)导体采用268根直径为0.40mm细圆铜丝进行制备，采用40根*1股和38根*6股结构束绞，之后采用1+6结构进行排列复绞，每层股线和该层复绞绞向相同，最外层绞向为左向，相邻层绞向相反，绞合制成导体；(1) The conductor is prepared by using 268 fine round copper wires with a diameter of 0.40mm. The conductors are bundled with 40 * 1 strand and 38 * 6 strand structures, and then arranged and compounded in a 1+6 structure. Each layer of strands is The layers are twisted in the same direction, the outermost layer is twisted to the left, and the adjacent layers are twisted in the opposite direction, and are twisted to form a conductor;
(2)在步骤(1)制成的导体外表面挤包绝缘层，绝缘层采用乙丙橡胶绝缘材料，绝缘层的标称厚度为1.4mm，挤包时硫化管道压力控制在1.1～1.5MPa之间，生产速度控制在30～34m/min之间；(2) Extrude an insulation layer on the outer surface of the conductor made in step (1). The insulation layer is made of ethylene propylene rubber insulation material. The nominal thickness of the insulation layer is 1.4mm. The pressure of the vulcanized pipe is controlled at 1.1~1.5MPa during extrusion. between, the production speed is controlled between 30~34m/min;
(3)将步骤(2)制备得到的绝缘线芯进行绞合成缆，得到缆芯；(3) Twisting the insulated wire cores prepared in step (2) into a cable to obtain a cable core;
(4)在步骤(3)制成的缆芯外挤包护套层，护套层采用耐酸碱腐蚀护套材料制备，护套层的标称厚度为4.4mm，生产时硫化管道压力控制在1.1～1.5MPa之间，生产速度控制在6～10m/min之间。(4) The cable core made in step (3) is extruded with a sheath layer. The sheath layer is made of acid and alkali corrosion resistant sheath material. The nominal thickness of the sheath layer is 4.4mm. The pressure of the vulcanized pipe is controlled during production. Between 1.1～1.5MPa, the production speed is controlled between 6～10m/min.
耐酸碱腐蚀护套材料的原料如下：The raw materials of acid and alkali corrosion resistant sheath materials are as follows:
50千克氯化聚乙烯橡胶(氯含量为35％，门尼粘度为60)、5.0千克高活性氧化镁(活性以柠檬酸标示，具体值为14s。)、2.0千克环保钙锌稳定剂、2.5千克微晶蜡、7.5千克纳米硅土、50千克硫酸钡、3.0千克三氧化二锑、0.75千克BIPB、0.25千克PDM、0.5千克RD、5.0千克DOS、2.0千克耐晒红。50 kilograms of chlorinated polyethylene rubber (chlorine content is 35%, Mooney viscosity is 60), 5.0 kilograms of highly active magnesium oxide (activity is marked with citric acid, the specific value is 14s.), 2.0 kilograms of environmentally friendly calcium and zinc stabilizer, 2.5 Kg of microcrystalline wax, 7.5 kilogram of nanosilica, 50 kilogram of barium sulfate, 3.0 kilogram of antimony trioxide, 0.75 kilogram of BIPB, 0.25 kilogram of PDM, 0.5 kilogram of RD, 5.0 kilogram of DOS, 2.0 kilogram of sunfast red.
耐酸碱腐蚀护套材料的制备方法，包括以下步骤：The preparation method of acid and alkali corrosion resistant sheath material includes the following steps:
(1)将50千克氯化聚乙烯橡胶、5.0千克高活性氧化镁、2.0千克环保钙锌稳定剂、2.5千克微晶蜡、7.5千克纳米硅土、50千克硫酸钡、3.0千克三氧化二锑、2.0千克耐晒红和5.0千克DOS加入到密炼机中，放下上顶栓，密炼温度控制在150℃，密炼3分钟，然后提起上顶栓，1分钟后再次放下 上顶栓，密炼2分钟，提起上顶栓，打开下料门，将混合料卸出，转入开炼机薄通打卷，在室温下停放冷却8小时，得到混炼胶片；(1) Combine 50 kg of chlorinated polyethylene rubber, 5.0 kg of highly active magnesium oxide, 2.0 kg of environmentally friendly calcium and zinc stabilizer, 2.5 kg of microcrystalline wax, 7.5 kg of nanosilica, 50 kg of barium sulfate, and 3.0 kg of antimony trioxide , 2.0 kg of light-fast red and 5.0 kg of DOS are added to the internal mixer, put down the upper ejector bolt, control the mixing temperature at 150°C, and mix for 3 minutes, then lift up the upper ejector bolt and put it down again after 1 minute. Put the ejector bolt on and mix for 2 minutes. Lift the ejector bolt, open the unloading door, unload the mixture, transfer it to the open mill for rolling, and let it cool at room temperature for 8 hours to get the mixed film;
(2)将127.0千克混炼胶片、0.75千克BIPB、0.25千克PDM和0.5千克RD投入密炼机中，放下上顶栓，密炼温度控制在110℃，密炼45秒，提起上顶栓，打开下料门，将混合料卸出，转入开炼机薄通打卷；(2) Put 127.0 kg of mixed film, 0.75 kg of BIPB, 0.25 kg of PDM and 0.5 kg of RD into the internal mixer, put down the top bolt, control the mixing temperature at 110°C, mix for 45 seconds, lift the top bolt, Open the unloading door, unload the mixture, and transfer it to the open mill for rolling;
(3)将薄通后打成的胶卷投入辗页机，开启冷却水后，将切割后的胶片一次穿过八个冷却滚筒，再穿过隔离粉槽，最后制成宽度为20mm，厚度为0.5mm的胶片。(3) Put the thinned film into the rolling machine, turn on the cooling water, pass the cut film through eight cooling rollers at a time, and then through the isolation powder tank, and finally make it into a width of 20mm and a thickness of 0.5mm film.
对实施例1和实施例2制备得到的电缆(规格均为YCW 450/750V 4×35mm2)进行护套实验，进行护套性能试验所依据的标准为GB/T 5013-2008及JB/T 8735-2016。其护套性能试验结果见表1。A sheath test was conducted on the cables prepared in Example 1 and Example 2 (both specifications were YCW 450/750V 4×35mm 2 ), and the standards based on the sheath performance test were GB/T 5013-2008 and JB/T 8735-2016. The results of the sheath performance test are shown in Table 1.
表1实施例1～2电缆护套性能实验结果

Table 1 Experimental results of cable sheath performance in Examples 1 to 2

从表1可以看出，本发明制备得到的电缆护套经酸碱浸泡后，最大抗张强度变化率较低，且最小断裂伸长率处于较高水平，表明具有良好的耐酸碱腐蚀性能。同时，其机械性能、耐老化性能、耐油性能以及耐低温性能优良。It can be seen from Table 1 that the maximum tensile strength change rate of the cable sheath prepared by the present invention is low after being soaked in acid and alkali, and the minimum elongation at break is at a high level, indicating that it has good acid and alkali corrosion resistance . At the same time, its mechanical properties, aging resistance, oil resistance and low temperature resistance are excellent.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。 The above are only the preferred embodiments of the present invention. It should be pointed out that those of ordinary skill in the art can also make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications can also be made. should be regarded as the protection scope of the present invention.

Claims (13)

  1. 一种耐酸碱腐蚀电缆护套材料，其特征在于，以质量份数计，制备原料包括以下组分：
    An acid and alkali corrosion resistant cable sheathing material, characterized in that the raw materials for preparation include the following components in terms of parts by mass:
    所述高活性氧化镁用柠檬酸标示的活性为12～20s。The activity of the highly active magnesium oxide marked with citric acid is 12 to 20 seconds.
  2. 根据权利要求1所述的电缆护套材料，其特征在于，所述环保稳定剂包括环保钙锌稳定剂。The cable sheath material according to claim 1, wherein the environmentally friendly stabilizer includes an environmentally friendly calcium zinc stabilizer.
  3. 根据权利要求1所述的电缆护套材料，其特征在于，所述耐酸碱填充剂包括碳酸镁、氢氧化铝或硫酸钡。The cable sheath material according to claim 1, wherein the acid and alkali resistant filler includes magnesium carbonate, aluminum hydroxide or barium sulfate.
  4. 权利要求1～3任一项所述电缆护套材料的制备方法，其特征在于，包括以下步骤：The preparation method of cable sheathing material according to any one of claims 1 to 3, characterized in that it includes the following steps:
    将氯化聚乙烯橡胶、高活性氧化镁、环保稳定剂、微晶蜡、耐酸碱填充剂、三氧化二锑、癸二酸二辛酯和颜填料进行第一混炼，得到混炼胶片；The chlorinated polyethylene rubber, highly active magnesium oxide, environmentally friendly stabilizer, microcrystalline wax, acid and alkali resistant filler, antimony trioxide, dioctyl sebacate and pigments and fillers are first mixed to obtain a mixed film ;
    将所述混炼胶片、双叔丁基过氧化二异丙苯、N，N’-间苯撑双马来酰亚胺和2，2，4-三甲基-1，2-二氢化喹啉聚合体进行第二混炼，得到所述护套材料。The mixed film, bis-tert-butyl dicumyl peroxide, N,N'-m-phenylene bismaleimide and 2,2,4-trimethyl-1,2-dihydroquino The pholine polymer is mixed for the second time to obtain the sheath material.
  5. 根据权利要求4所述的制备方法，其特征在于，所述第一混炼的温度为150～170℃，时间为6～10分钟。The preparation method according to claim 4, characterized in that the temperature of the first kneading is 150-170°C and the time is 6-10 minutes.
  6. 根据权利要求4所述的制备方法，其特征在于，所述第二混炼的温度为110～120℃，时间为45～60秒。 The preparation method according to claim 4, characterized in that the second kneading temperature is 110-120°C and the time is 45-60 seconds.
  7. 根据权利要求4所述的制备方法，其特征在于，所述第一混炼在密炼机中进行，所述密炼机为包含上顶栓的密炼机；所述第一混炼为：在上顶栓处于放下状态的条件下混炼3～5分钟后，提起上顶栓，混炼1～2分钟，再将上顶栓放下，混炼2～3分钟，得到混合料；将所得到的混合料依次进行薄通打卷、辗片和冷却。The preparation method according to claim 4, characterized in that the first mixing is performed in an internal mixer, and the internal mixer is an internal mixer including an upper ejector bolt; the first mixing is: After mixing for 3 to 5 minutes with the upper ejector pin down, lift the upper ejector pin and mix for 1 to 2 minutes. Then lower the upper ejector pin and mix for 2 to 3 minutes to obtain the mixture; The obtained mixture is rolled, rolled and cooled in sequence.
  8. 根据权利要求7所述的制备方法，其特征在于，所述冷却在室温下进行，所述冷却的时间为6～10小时。The preparation method according to claim 7, characterized in that the cooling is performed at room temperature, and the cooling time is 6 to 10 hours.
  9. 根据权利要求4所述的制备方法，其特征在于，所述第二混炼在密炼机中进行，所述密炼机为包含上顶栓的密炼机，所述第二混炼在上顶栓放下的状态下进行。The preparation method according to claim 4, characterized in that the second mixing is performed in an internal mixer, the internal mixer is an internal mixer including an upper ejector bolt, and the second mixing is performed in an upper Carry out with the top bolt down.
  10. 根据权利要求4或9所述的制备方法，其特征在于，所述第二混炼后还包括依次进行的薄通打卷和辗片。The preparation method according to claim 4 or 9, characterized in that, after the second mixing, the sheet rolling and rolling are performed in sequence.
  11. 一种耐酸碱腐蚀电缆，其特征在于，所述电缆包括绝缘线芯和包覆在所述绝缘线芯外部的护套层，所述绝缘线芯包括导体和包覆在所述导体表面的绝缘层，所述护套层由权利要求1～3任一项所述的护套材料或权利要求4～10任一项所述制备方法制备得到的护套材料制备得到。An acid-alkali corrosion-resistant cable, characterized in that the cable includes an insulated core and a sheath layer covering the outside of the insulated core, and the insulated core includes a conductor and a sheath covering the surface of the conductor. Insulating layer, the sheath layer is prepared from the sheath material according to any one of claims 1 to 3 or the sheath material prepared by the preparation method according to any one of claims 4 to 10.
  12. 根据权利要求11所述的电缆，其特征在于，所述导体为采用圆铜丝通过束绞和复绞制成的软结构导体，所述绝缘层的材料为乙丙橡胶。The cable according to claim 11, wherein the conductor is a soft-structured conductor made of round copper wires through bunching and compound twisting, and the material of the insulating layer is ethylene-propylene rubber.
  13. 根据权利要求11所述的电缆，其特征在于，所述护套层的标称厚度为4.2～4.6mm。 The cable according to claim 11, characterized in that the nominal thickness of the sheath layer is 4.2~4.6mm.
PCT/CN2023/087957 2022-07-05 2023-04-13 Acid and alkali corrosion resistant cable sheath material and preparation method therefor, and acid and alkali corrosion resistant cable WO2024007662A1 (en)

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CN103613870A (en) * 2013-11-18 2014-03-05 无锡市沪安电线电缆有限公司 Preparation method of environmental low temperature resistant and acid and alkali resistant cable sheath rubbers
JP2017025253A (en) * 2015-07-27 2017-02-02 日立金属株式会社 Elastomer composition, and insulated wire and cable using the same
CN107945978A (en) * 2017-11-25 2018-04-20 安徽华通电缆集团有限公司 A kind of charging pile cable
CN113563673A (en) * 2021-06-29 2021-10-29 中辰电缆股份有限公司 Improved low-temperature acid and alkali resistant rubber sleeve cable sheath rubber and preparation method thereof
CN115124791A (en) * 2022-07-05 2022-09-30 中辰电缆股份有限公司 Acid and alkali corrosion resistant cable sheath material, preparation method thereof and acid and alkali corrosion resistant cable

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* Cited by examiner, † Cited by third party
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CN103613870A (en) * 2013-11-18 2014-03-05 无锡市沪安电线电缆有限公司 Preparation method of environmental low temperature resistant and acid and alkali resistant cable sheath rubbers
JP2017025253A (en) * 2015-07-27 2017-02-02 日立金属株式会社 Elastomer composition, and insulated wire and cable using the same
CN107945978A (en) * 2017-11-25 2018-04-20 安徽华通电缆集团有限公司 A kind of charging pile cable
CN113563673A (en) * 2021-06-29 2021-10-29 中辰电缆股份有限公司 Improved low-temperature acid and alkali resistant rubber sleeve cable sheath rubber and preparation method thereof
CN115124791A (en) * 2022-07-05 2022-09-30 中辰电缆股份有限公司 Acid and alkali corrosion resistant cable sheath material, preparation method thereof and acid and alkali corrosion resistant cable

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