CN111154224A - High-temperature-resistant cable insulation layer material and preparation method thereof - Google Patents

High-temperature-resistant cable insulation layer material and preparation method thereof Download PDF

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CN111154224A
CN111154224A CN201911234806.6A CN201911234806A CN111154224A CN 111154224 A CN111154224 A CN 111154224A CN 201911234806 A CN201911234806 A CN 201911234806A CN 111154224 A CN111154224 A CN 111154224A
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temperature
insulation layer
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layer material
cable insulation
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孙涛
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Xi'an Dinglan Communication Technology Co ltd
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Xi'an Dinglan Communication Technology Co ltd
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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
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • 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
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/36—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes condensation products of phenols with aldehydes or ketones
    • 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
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • 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
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/442—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from aromatic vinyl compounds
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    • 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
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2203/00—Applications
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2205/00—Polymer mixtures characterised by other features
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Abstract

The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass: phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer. The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps: step 1: weighing the components according to the mass fraction; pretreating part of the components; step 2: putting part of the components in the step 1 into a mixing roll, controlling the temperature to be 115-145 ℃, and controlling the time to be 15-30 minutes to obtain a mixed colloid; and step 3: taking out the colloid, placing the colloid into a secondary mixing roll, adding the pretreated part of the components into the secondary mixing roll according to the mass percent, and controlling the temperature and the time to obtain a rubber compound; and 4, step 4: and extruding and processing the rubber compound into a mould to obtain the high-temperature-resistant cable insulation layer material. The invention improves the high temperature resistance of the high temperature resistant cable insulation layer material.

Description

High-temperature-resistant cable insulation layer material and preparation method thereof
Technical Field
The invention belongs to the technical field of cable materials, particularly relates to a high-temperature-resistant cable insulation layer material, and further relates to a preparation method of the cable insulation layer material.
Background
The cable insulation material has the requirements of high temperature resistance, weather resistance and the like; on the premise that the requirements are mutually superposed, the reasonable selection and matching of materials are the determining factors of whether the cable can meet the requirements of customers. The cable is a conductor formed by twisting one or more conductors to form a conductor core, applying a corresponding insulating layer on the conductor and wrapping a sealing sheath outside the conductor core, and mainly comprises the conductor core, the insulating layer, a shielding layer and a sheath layer. As the insulating material of the cable, the high performance is more and more studied, the cable products are in the cycle process of continuous updating, maturation and innovation, and the new insulating material is endlessly developed, for example, the synthetic resin and blending technology which are rapidly developed in recent years in China promote the cable industry to enter a new material application era. However, the high temperature resistance of the current high temperature resistant cable insulation layer material needs to be further improved.
Disclosure of Invention
The invention provides a high-temperature-resistant cable insulation layer material, which solves the problem that the high-temperature-resistant performance of the conventional high-temperature-resistant cable insulation layer material is not high.
The invention also provides a preparation method of the cable insulation layer material.
The invention adopts a technical scheme that:
a high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
The present invention is also characterized in that,
the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -50%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
The high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 20 to 30 percent; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
The high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 3% -10%; ethylene propylene diene monomer: 3% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
The high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 45 percent; polyethylene: 24 percent; polystyrene: 10 percent; zinc oxide: 5 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 4 percent; and 2% of plasticizer.
The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature to be 115-145 ℃, and controlling the time to be 15-30 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 10-20 minutes at room temperature, placing into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to mass percent, controlling the temperature to be 85-105 ℃ and the time to be 10-25 minutes, and carrying out secondary mixing to obtain mixed rubber;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
The invention has the beneficial effects that: according to the high-temperature-resistant cable insulation layer material and the preparation method thereof, the ethylene propylene diene monomer and the plasticizer are added, and the high-temperature-resistant cable insulation layer material prepared by the process has certain high-temperature resistance and strong practicability.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
Further, the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -50%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
Further, the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 20 to 30 percent; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
Further, the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 3% -10%; ethylene propylene diene monomer: 3% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
Further, the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 45 percent; polyethylene: 24 percent; polystyrene: 10 percent; zinc oxide: 5 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 4 percent; and 2% of plasticizer.
The invention also discloses a preparation method of the high-temperature-resistant cable insulation layer material,
the preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature to be 115-145 ℃, and controlling the time to be 15-30 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 10-20 minutes at room temperature, placing into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to mass percent, controlling the temperature to be 85-105 ℃ and the time to be 10-25 minutes, and carrying out secondary mixing to obtain mixed rubber;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
The invention relates to a high-temperature-resistant cable insulation layer material and a preparation method thereof, which are further described in detail by specific examples.
Example 1
The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass:
phenolic resin: 60 percent; polyethylene: 10 percent; polystyrene: 10 percent; zinc oxide: 6 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 3 percent; 1% of plasticizer.
The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature to be 115 ℃ and the time to be 30 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 10 minutes at room temperature, then placing the colloid into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to the mass percent, controlling the temperature to be 85 ℃ and the time to be 25 minutes, and carrying out secondary mixing to obtain a rubber compound;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
Example 2
The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass:
phenolic resin: 50 percent; polyethylene: 20 percent; polystyrene: 10 percent; zinc oxide: 1 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 5 percent; 4% of plasticizer.
The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature at 118 ℃ and the time at 20 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 12 minutes at room temperature, placing the colloid into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to the mass percent, controlling the temperature to be 95 ℃ and the time to be 20 minutes, and carrying out secondary mixing to obtain a rubber compound;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
Example 3
The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass:
phenolic resin: 30 percent; polyethylene: 30 percent; polystyrene: 30 percent; zinc oxide: 1 percent; ethylene propylene diene monomer: 7 percent; polyethylene wax: 1 percent; 1% of plasticizer.
The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature to be 145 ℃ and the time to be 15 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 20 minutes at room temperature, placing the colloid into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to the mass percent, controlling the temperature to be 105 ℃ and the time to be 10 minutes, and carrying out secondary mixing to obtain a rubber compound;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
Example 4
The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass:
phenolic resin: 30 percent; polyethylene: 30 percent; polystyrene: 10 percent; zinc oxide: 10 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 5 percent; 5% of plasticizer.
The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature to be 125 ℃ and the time to be 25 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 18 minutes at room temperature, then placing the colloid into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to the mass percentage, controlling the temperature to be 96 ℃ and the time to be 18 minutes, and carrying out secondary mixing to obtain mixed rubber;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
Example 5
The invention discloses a high-temperature-resistant cable insulation layer material which comprises the following components in percentage by mass:
phenolic resin: 45 percent; polyethylene: 24 percent; polystyrene: 10 percent; zinc oxide: 5 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 4 percent; and 2% of plasticizer.
The preparation method of the high-temperature-resistant cable insulation layer material comprises the following steps:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature at 110 ℃ and the time at 20 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 18 minutes at room temperature, then placing the colloid into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to the mass percent, controlling the temperature to be 98 ℃ and the time to be 20 minutes, and carrying out secondary mixing to obtain mixed rubber;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
The high-temperature-resistant cable insulation layer material and the preparation method thereof improve the high-temperature resistance of the high-temperature-resistant cable insulation layer material and prolong the service life of the cable insulation layer material.

Claims (6)

1. The high-temperature-resistant cable insulation layer material is characterized by comprising the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
2. The high-temperature-resistant cable insulation layer material as claimed in claim 1, wherein the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -50%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
3. The high-temperature-resistant cable insulation layer material as claimed in claim 1, wherein the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 20 to 30 percent; polystyrene: 10% -30%; zinc oxide: 1% -10%; ethylene propylene diene monomer: 1% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
4. The high-temperature-resistant cable insulation layer material as claimed in claim 1, wherein the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 30% -60%; polyethylene: 10% -30%; polystyrene: 10% -30%; zinc oxide: 3% -10%; ethylene propylene diene monomer: 3% -10%; polyethylene wax: 1% -5%; 1 to 5 percent of plasticizer.
5. The high-temperature-resistant cable insulation layer material as claimed in claim 1, wherein the high-temperature-resistant cable insulation layer material comprises the following components in percentage by mass:
phenolic resin: 45 percent; polyethylene: 24 percent; polystyrene: 10 percent; zinc oxide: 5 percent; ethylene propylene diene monomer: 10 percent; polyethylene wax: 4 percent; and 2% of plasticizer.
6. The preparation method of the high-temperature-resistant cable insulation layer material is characterized by comprising the following steps of:
step 1: weighing phenolic resin according to the mass fraction; polyethylene; polystyrene; zinc oxide; ethylene propylene diene monomer; polyethylene wax; a plasticizer; pretreating polyethylene wax and a plasticizer;
step 2: the phenolic resin in the step 1; polyethylene; polystyrene; zinc oxide; putting the ethylene propylene diene monomer rubber into a mixing roll, controlling the temperature to be 115-145 ℃, and controlling the time to be 15-30 minutes to obtain a mixed colloid;
and step 3: taking out the colloid obtained in the step 2, standing for 10-20 minutes at room temperature, placing into a secondary mixing roll, adding the pretreated polyethylene wax and the plasticizer into the secondary mixing roll according to mass percent, controlling the temperature to be 85-105 ℃ and the time to be 10-25 minutes, and carrying out secondary mixing to obtain mixed rubber;
and 4, step 4: and (4) extruding the rubber compound obtained in the step (4) to obtain the high-temperature-resistant cable insulation layer material.
CN201911234806.6A 2019-12-05 2019-12-05 High-temperature-resistant cable insulation layer material and preparation method thereof Pending CN111154224A (en)

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