CN114106446A - Cable insulation material - Google Patents

Cable insulation material Download PDF

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Publication number
CN114106446A
CN114106446A CN202111573650.1A CN202111573650A CN114106446A CN 114106446 A CN114106446 A CN 114106446A CN 202111573650 A CN202111573650 A CN 202111573650A CN 114106446 A CN114106446 A CN 114106446A
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mass
parts
mixing
modified
insulation material
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Inventor
宦军
张红华
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Yangzhou Baitong Cable Material Co ltd
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Yangzhou Baitong Cable Material Co ltd
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Priority to CN202111573650.1A priority Critical patent/CN114106446A/en
Publication of CN114106446A publication Critical patent/CN114106446A/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
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • 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
    • 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
    • C08K2003/2265—Oxides; Hydroxides of metals of iron
    • C08K2003/2272—Ferric oxide (Fe2O3)
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

Abstract

The invention relates to the technical field of cable manufacturing, in particular to a cable insulation material which comprises the following raw materials in parts by mass: 50-60 parts by mass of high-density polyethylene (HDPE), 10-25 parts by mass of glass fiber, 6-9 parts by mass of modified antioxidant, 5-8 parts by mass of polyurethane emulsion, 1-5 parts by mass of modified bone glue binder, 2-5 parts by mass of plasticizer and 1-3 parts by mass of lubricant. The lubricant is used as a stabilizer, the glass fiber is dispersed on the surface of the cable, good insulativity can be obtained, the modified bone glue adhesive improves the bonding strength of raw materials, the plasticizer improves the surface tension of the cable, the preparation process is simple, the production stability is good, and the energy consumption is saved.

Description

Cable insulation material
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a cable insulating material.
Background
An insulated cable is a cable in which a layer of non-conductive material is uniformly and hermetically wrapped around the conductor, such as: resin, plastic, silicon rubber, PVC and the like to form an insulating layer, so that the insulated wire can be used for preventing accidents such as electric leakage, short circuit, electric shock and the like caused by the contact of the electric conductor and the outside.
The cable is oxidized after being used for a long time, and the cable is often scratched by a sharp object to influence the use of the product. Therefore, we propose a cable insulation material for solving the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a cable insulating material.
A cable insulation material comprises the following raw materials in parts by mass:
50-60 parts by mass of high-density polyethylene (HDPE), 20-30 parts by mass of ferrite nanoparticles, 10-25 parts by mass of glass fibers, 6-9 parts by mass of modified antioxidant, 5-8 parts by mass of polyurethane emulsion, 1-5 parts by mass of modified bone glue adhesive, 2-5 parts by mass of plasticizer and 1-3 parts by mass of lubricant.
Preferably, the high-density polyethylene HDPE is added with phenolic FRP (fiber reinforced Plastic) and modified chlorinated polyethylene CPE (chlorinated polyethylene), wherein the content of the phenolic FRP is 28-30%, and the content of the modified chlorinated polyethylene CPE is 5-10%.
Preferably, the modified antioxidant is prepared by blending polyphenylene sulfide resin, carbon black and polyphenylene sulfide fibers as raw materials, wherein the mixing mass ratio of the polyphenylene sulfide resin, the carbon black and the polyphenylene sulfide fibers is 7:3: 5.
Preferably, the lubricant is a combination of one of methyl silicone oil, calcium stearate, magnesium stearate and zinc stearate and oxidized polyethylene wax according to a ratio of 1: 4.
Preferably, the oxidized polyethylene wax is one of oxidized polyethylene waxes with an acid value of 12-36 mgKOH/g and a weight-average molecular weight of 300-600 g/mol.
Preferably, the preparation method of the modified antioxidant comprises the following steps: weighing polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber according to a certain amount, putting the polyphenylene sulfide resin and the polyphenylene sulfide fiber into a mixing roll, and mixing and melting for 5-11 min at the temperature of 90-120 ℃; and (3) after uniformly stirring, adding the carbon black ground into powder, mixing and melting for 2-5 min, adding a proper amount of 2% ethanol water solution, continuously stirring for 15-20 min, and obtaining the modified antioxidant after stirring.
Preferably, the modified bone glue adhesive is prepared by graft copolymerization modification of a bone glue aqueous solution, starch and acrylic acid, wherein the mass ratio of the bone glue aqueous solution to the starch to the acrylic acid is 4:3:2, the starch and the bone glue aqueous solution are uniformly mixed, the acrylic acid is added according to the amount, the mixture is uniformly stirred after being mixed, and the modified bone glue adhesive is obtained after the stirring is finished.
A preparation method of a cable insulation material comprises the following steps:
s1, weighing the raw materials in proportion, putting the high-density polyethylene HDPE and the ferrite nanoparticles into an internal mixer, and mixing and melting for 5-10 min at the temperature of 90-120 ℃;
s2, adding a lubricant and glass fibers into the melt, mixing and melting for 3-6 min, adding a modified antioxidant, mixing and melting for 2-8 min;
s4, weighing the modified bone glue adhesive and the plasticizer, pouring the modified bone glue adhesive and the plasticizer into a mixing roll, and fully mixing for 5-10 min at the mixing temperature of 45-55 ℃;
and S5, adding polyurethane emulsion into the obtained melt according to the amount, uniformly mixing, then mixing for 20-30 min at the temperature of 120-135 ℃, extruding, granulating and drying the mixed product, and finally forming to obtain the cable insulation material, wherein the drying temperature is 60-85 ℃, and the drying time is 10-14 h.
Preferably, the twisting pitch ratio of the conductor is 12-15 times of the outer diameter of the conductor, the twisting directions of adjacent layers are opposite, and the innermost layer is in the right direction.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, a proper amount of CPE is added into the high-density polyethylene HDPE, so that the melt viscosity can be reduced, the fluidity is improved, and the processing performance is improved; the coating also has good oil resistance, flame retardance and coloring performance;
2. in the invention, the modified antioxidant is prepared by taking the polyphenylene sulfide resin, the carbon black and the polyphenylene sulfide fiber as raw materials, the polyphenylene sulfide resin and the polyphenylene sulfide fiber have the advantages of excellent high temperature resistance, chemical resistance and flame retardancy, and the carbon black as a light shielding agent can play a good shielding effect on ultraviolet rays;
3. in the invention, the lubricant is used as a stabilizer, the glass fiber is dispersed on the surface of the cable, good insulativity can be obtained, the modified bone glue adhesive improves the bonding strength of raw materials, the plasticizer improves the surface tension of the cable, the preparation process is simple, the production stability is good, and the energy consumption is saved.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1:
a cable insulation material comprises the following raw materials in parts by mass:
50 parts by mass of high-density polyethylene (HDPE), 20 parts by mass of ferrite nanoparticles, 10 parts by mass of glass fibers, 6 parts by mass of modified antioxidant, 5 parts by mass of polyurethane emulsion, 1 part by mass of modified bone glue adhesive, 2 parts by mass of plasticizer and 1 part by mass of lubricant.
Example 2:
a cable insulation material comprises the following raw materials in parts by mass:
55 parts by mass of high-density polyethylene (HDPE), 25 parts by mass of ferrite nanoparticles, 15 parts by mass of glass fibers, 7 parts by mass of modified antioxidant, 8 parts by mass of polyurethane emulsion, 3 parts by mass of modified bone glue adhesive, 3 parts by mass of plasticizer and 2 parts by mass of lubricant.
Example 3:
a cable insulation material comprises the following raw materials in parts by mass:
60 parts by mass of high-density polyethylene (HDPE), 30 parts by mass of ferrite nanoparticles, 25 parts by mass of glass fibers, 9 parts by mass of modified antioxidant, 8 parts by mass of polyurethane emulsion, 5 parts by mass of modified bone glue adhesive, 5 parts by mass of plasticizer and 3 parts by mass of lubricant.
In the above embodiments 1 to 3, the high density polyethylene HDPE is added with the phenolic FRP and the modified chlorinated polyethylene CPE, wherein the phenolic FRP content is 28 to 30%, and the modified chlorinated polyethylene CPE content is 5 to 10%;
the modified antioxidant is prepared by blending raw materials of polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber, wherein the mixing mass ratio of the polyphenylene sulfide resin, the carbon black and the polyphenylene sulfide fiber is 7:3: 5; the preparation method comprises the following steps: the preparation method of the modified antioxidant comprises the following steps: weighing polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber according to a certain amount, putting the polyphenylene sulfide resin and the polyphenylene sulfide fiber into a mixing roll, and mixing and melting for 5-11 min at the temperature of 90-120 ℃; after uniformly stirring, adding the carbon black ground into powder, mixing and melting for 2-5 min, adding a proper amount of 2% ethanol water solution, continuously stirring for 15-20 min, and obtaining a modified antioxidant after stirring;
the modified bone glue adhesive is prepared by graft copolymerization modification of a bone glue aqueous solution, starch and acrylic acid, wherein the mass ratio of the bone glue aqueous solution to the starch to the acrylic acid is 4:3:2, the starch and the bone glue aqueous solution are uniformly mixed, the acrylic acid is added according to the amount, the mixture is uniformly stirred after being mixed, and the modified bone glue adhesive is obtained after the stirring is finished.
In each of examples 1 to 3, the insulated cable was prepared by the following steps:
s1, weighing the raw materials in proportion, putting the high-density polyethylene HDPE and the ferrite nanoparticles into an internal mixer, and mixing and melting for 5-10 min at the temperature of 90-120 ℃;
s2, adding a lubricant and glass fibers into the melt, mixing and melting for 3-6 min, adding a modified antioxidant, mixing and melting for 2-8 min;
s4, weighing the modified bone glue adhesive and the plasticizer, pouring the modified bone glue adhesive and the plasticizer into a mixing roll, and fully mixing for 5-10 min at the mixing temperature of 45-55 ℃;
and S5, adding polyurethane emulsion into the obtained melt according to the amount, uniformly mixing, then mixing for 20-30 min at the temperature of 120-135 ℃, extruding, granulating and drying the mixed product, and finally forming to obtain the cable insulation material, wherein the drying temperature is 60-85 ℃, and the drying time is 10-14 h.
Test one: determination of the Oxidation resistance of insulated Cable
Comparative example 1:
a cable insulation material comprises the following raw materials in parts by mass:
50 parts by mass of high-density polyethylene (HDPE), 20 parts by mass of ferrite nanoparticles, 10 parts by mass of glass fibers, 6 parts by mass of antioxidants, 5 parts by mass of polyurethane emulsion, 1 part by mass of modified bone glue binder, 2 parts by mass of plasticizer and 1 part by mass of lubricant.
Comparative example 2:
a cable insulation material comprises the following raw materials in parts by mass:
55 parts by mass of high-density polyethylene (HDPE), 25 parts by mass of ferrite nanoparticles, 15 parts by mass of glass fibers, 7 parts by mass of antioxidant, 8 parts by mass of polyurethane emulsion, 3 parts by mass of modified bone glue adhesive, 3 parts by mass of plasticizer and 2 parts by mass of lubricant.
Comparative example 3:
a cable insulation material comprises the following raw materials in parts by mass:
60 parts by mass of high-density polyethylene (HDPE), 30 parts by mass of ferrite nanoparticles, 25 parts by mass of glass fibers, 9 parts by mass of antioxidant, 8 parts by mass of polyurethane emulsion, 5 parts by mass of modified bone glue adhesive, 5 parts by mass of plasticizer and 3 parts by mass of lubricant.
In the comparative examples 1-3, the high-density polyethylene HDPE is added with the phenolic FRP and the modified chlorinated polyethylene CPE, wherein the content of the phenolic FRP is 28-30%, and the content of the modified chlorinated polyethylene CPE is 5-10%;
the antioxidant is prepared by mixing polyphenylene sulfide resin and carbon black serving as raw materials, wherein the mixing mass ratio of the polyphenylene sulfide resin to the carbon black is 7: 3; the preparation method comprises the following steps: the preparation method of the antioxidant comprises the following steps: weighing polyphenylene sulfide resin and carbon black according to a certain amount, putting the polyphenylene sulfide resin into a mixing roll, and mixing and melting for 5-11 min at the temperature of 90-120 ℃; after uniformly stirring, adding the carbon black ground into powder, mixing and melting for 2-5 min, adding a proper amount of 2% ethanol water solution, continuously stirring for 15-20 min, and obtaining an antioxidant after stirring;
the modified bone glue adhesive is prepared by graft copolymerization modification of a bone glue aqueous solution, starch and acrylic acid, wherein the mass ratio of the bone glue aqueous solution to the starch to the acrylic acid is 4:3:2, the starch and the bone glue aqueous solution are uniformly mixed, the acrylic acid is added according to the amount, the mixture is uniformly stirred after being mixed, and the modified bone glue adhesive is obtained after the stirring is finished.
In each of comparative examples 1 to 3, the insulated cable was prepared by the following steps:
s1, weighing the raw materials in proportion, putting the high-density polyethylene HDPE and the ferrite nanoparticles into an internal mixer, and mixing and melting for 5-10 min at the temperature of 90-120 ℃;
s2, adding a lubricant and glass fibers into the melt, mixing and melting for 3-6 min, adding a modified antioxidant, mixing and melting for 2-8 min;
s4, weighing the modified bone glue adhesive and the plasticizer, pouring the modified bone glue adhesive and the plasticizer into a mixing roll, and fully mixing for 5-10 min at the mixing temperature of 45-55 ℃;
and S5, adding polyurethane emulsion into the obtained melt according to the amount, uniformly mixing, then mixing for 20-30 min at the temperature of 120-135 ℃, extruding, granulating and drying the mixed product, and finally forming to obtain the cable insulation material, wherein the drying temperature is 60-85 ℃, and the drying time is 10-14 h.
The following tests were carried out on the cables of examples 1 to 3 and comparative examples 1 to 3, respectively:
dropwise adding 3mL of DPPH methanol solution (the mass fraction of the DPPH methanol solution is 0.004%) on the surface of the cable, leveling the solution evenly, standing the solution for 30 minutes, measuring the absorbance at a wavelength of 517nm, calculating the inhibition rate of the solution, and recording the inhibition rate in the following table:
Figure DEST_PATH_IMAGE002
as can be seen from the above data, the oxidation resistance of the cables of examples, comparative examples and reference examples is the most susceptible to oxidation of the cable surface layer prepared in the examples, reference examples and comparative examples, i.e., comparative examples, in order from strong to weak, and thus it can be seen that the addition of the antioxidant has an effect of improving the oxidation resistance of the cable surface layer.
And (2) test II: determination of the resistance to cracking of an insulated Cable
Comparative example 4:
a cable insulation material comprises the following raw materials in parts by mass:
50 parts by mass of high-density polyethylene (HDPE), 20 parts by mass of ferrite nanoparticles, 10 parts by mass of glass fibers, 6 parts by mass of modified antioxidant, 5 parts by mass of polyurethane emulsion, 1 part by mass of bone glue adhesive, 2 parts by mass of plasticizer and 1 part by mass of lubricant.
Comparative example 5:
a cable insulation material comprises the following raw materials in parts by mass:
55 parts by mass of high-density polyethylene (HDPE), 25 parts by mass of ferrite nanoparticles, 15 parts by mass of glass fibers, 7 parts by mass of modified antioxidant, 8 parts by mass of polyurethane emulsion, 3 parts by mass of bone glue binder, 3 parts by mass of plasticizer and 2 parts by mass of lubricant.
Comparative example 6:
a cable insulation material comprises the following raw materials in parts by mass:
60 parts by mass of high-density polyethylene (HDPE), 30 parts by mass of ferrite nanoparticles, 25 parts by mass of glass fibers, 9 parts by mass of modified antioxidant, 8 parts by mass of polyurethane emulsion, 5 parts by mass of bone glue binder, 5 parts by mass of plasticizer and 3 parts by mass of lubricant.
In the comparative examples 4-6, the high-density polyethylene HDPE is added with the phenolic FRP and the modified chlorinated polyethylene CPE, wherein the content of the phenolic FRP is 28-30%, and the content of the modified chlorinated polyethylene CPE is 5-10%;
the modified antioxidant is prepared by blending raw materials of polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber, wherein the mixing mass ratio of the polyphenylene sulfide resin, the carbon black and the polyphenylene sulfide fiber is 7:3: 5; the preparation method comprises the following steps: the preparation method of the modified antioxidant comprises the following steps: weighing polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber according to a certain amount, putting the polyphenylene sulfide resin and the polyphenylene sulfide fiber into a mixing roll, and mixing and melting for 5-11 min at the temperature of 90-120 ℃; after uniformly stirring, adding the carbon black ground into powder, mixing and melting for 2-5 min, adding a proper amount of 2% ethanol water solution, continuously stirring for 15-20 min, and obtaining a modified antioxidant after stirring;
the bone glue adhesive is prepared by graft copolymerization modification of a bone glue aqueous solution and starch, wherein the mass ratio of the bone glue aqueous solution to the starch is 4:3, the starch and the bone glue aqueous solution are uniformly mixed, the mixture is uniformly stirred, and the bone glue adhesive is obtained after the stirring is finished.
In comparative examples 4 to 6, the insulated cables were prepared by the following steps:
s1, weighing the raw materials in proportion, putting the high-density polyethylene HDPE and the ferrite nanoparticles into an internal mixer, and mixing and melting for 5-10 min at the temperature of 90-120 ℃;
s2, adding a lubricant and glass fibers into the melt, mixing and melting for 3-6 min, adding a modified antioxidant, mixing and melting for 2-8 min;
s4, weighing the modified bone glue adhesive and the plasticizer, pouring the modified bone glue adhesive and the plasticizer into a mixing roll, and fully mixing for 5-10 min at the mixing temperature of 45-55 ℃;
and S5, adding polyurethane emulsion into the obtained melt according to the amount, uniformly mixing, then mixing for 20-30 min at the temperature of 120-135 ℃, extruding, granulating and drying the mixed product, and finally forming to obtain the cable insulation material, wherein the drying temperature is 60-85 ℃, and the drying time is 10-14 h.
The following tests were carried out on the cables of examples 1 to 3 and comparative examples 4 to 6, respectively:
drawing two crossed straight lines (each 40 mm) on the surface of the coating film, wherein the crossing angle is 30-45 degrees, and the coating film is cut through to the ground material;
and secondly, adhering a cutting position by using a pressure sensitive adhesive tape, and inspecting the film falling condition of the cross cutting area after tearing so as to judge the adhesive force strength.
The method for rating the falling-off condition of the coating film is shown in the following table:
grading Description of the invention
5A Without peeling off
4A There is a mark of peeling at the position of the cross
3A At the position of 1.6mm crossing to the other side, a serrated peeling notch is arranged
2A At a position 3.2mm across to the other side,with serrated peel-off cuts
1A Large area exfoliation in the cross-hatched area
0A All peeling off in the cross-cut region
Figure DEST_PATH_IMAGE004
The tests were carried out on days 1 to 3 after the cable was produced, and the test results are shown in the following table:
from the above test results, in examples 1 to 3, the film layer formation speed of the cable was fast within 1 to 3 days after the production, so that the cable was not easily cracked, while in comparative examples 4 to 6, the film layer formation speed of the cable was slow within 1 to 3 days after the production, so that the cable was easily scratched, so that the cable was peeled off from the surface of the sheath. Therefore, the addition of the acrylic acid can further improve the anti-damage performance of the glass cable.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The cable insulation material is characterized by comprising the following raw materials in parts by mass:
50-60 parts by mass of high-density polyethylene (HDPE), 20-30 parts by mass of ferrite nanoparticles, 10-25 parts by mass of glass fibers, 6-9 parts by mass of modified antioxidant, 5-8 parts by mass of polyurethane emulsion, 1-5 parts by mass of modified bone glue adhesive, 2-5 parts by mass of plasticizer and 1-3 parts by mass of lubricant.
2. The cable insulation material as claimed in claim 1, wherein the high density polyethylene HDPE is added with phenolic FRP (fiber reinforced Plastic) and modified chlorinated polyethylene CPE, wherein the phenolic FRP content is 28-30%, and the modified chlorinated polyethylene CPE content is 5-10%.
3. The cable insulation material as claimed in claim 1, wherein the modified antioxidant is prepared by blending polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber as raw materials, and the mixing mass ratio of the polyphenylene sulfide resin, the carbon black and the polyphenylene sulfide fiber is 7:3: 5.
4. The cable insulation material as claimed in claim 1, wherein the lubricant is a combination of one of methyl silicone oil, calcium stearate, magnesium stearate, zinc stearate and polyethylene oxide wax in a ratio of 1: 4.
5. The cable insulation material according to claim 4, wherein the oxidized polyethylene wax is one of oxidized polyethylene waxes having an acid value of 12 to 36mgKOH/g and a weight average molecular weight of 300 to 600 g/mol.
6. The cable insulation material as claimed in claim 3, wherein the modified antioxidant is prepared by the following steps: weighing polyphenylene sulfide resin, carbon black and polyphenylene sulfide fiber according to a certain amount, putting the polyphenylene sulfide resin and the polyphenylene sulfide fiber into a mixing roll, and mixing and melting for 5-11 min at the temperature of 90-120 ℃; and (3) after uniformly stirring, adding the carbon black ground into powder, mixing and melting for 2-5 min, adding a proper amount of 2% ethanol water solution, continuously stirring for 15-20 min, and obtaining the modified antioxidant after stirring.
7. The cable insulation material of claim 1, wherein the modified bone glue adhesive is prepared by graft copolymerization modification of a bone glue aqueous solution, starch and acrylic acid, wherein the mass ratio of the bone glue aqueous solution to the starch to the acrylic acid is 4:3:2, the starch and the bone glue aqueous solution are uniformly mixed, the acrylic acid is added according to the amount, the mixture is uniformly stirred, and the modified bone glue adhesive is obtained after the stirring is finished.
8. The preparation method of the cable insulation material is characterized by comprising the following steps:
s1, weighing the raw materials in proportion, putting the high-density polyethylene HDPE and the ferrite nanoparticles into an internal mixer, and mixing and melting for 5-10 min at the temperature of 90-120 ℃;
s2, adding a lubricant and glass fibers into the melt, mixing and melting for 3-6 min, adding a modified antioxidant, mixing and melting for 2-8 min;
s4, weighing the modified bone glue adhesive and the plasticizer, pouring the modified bone glue adhesive and the plasticizer into a mixing roll, and fully mixing for 5-10 min at the mixing temperature of 45-55 ℃;
and S5, adding polyurethane emulsion into the obtained melt according to the amount, uniformly mixing, then mixing for 20-30 min at the temperature of 120-135 ℃, extruding, granulating and drying the mixed product, and finally forming to obtain the cable insulation material, wherein the drying temperature is 60-85 ℃, and the drying time is 10-14 h.
9. The method for preparing a cable insulation material as claimed in claim 8, wherein the conductor has a twist pitch ratio of 12 to 15 times the outer diameter of the conductor, adjacent layers have opposite twist directions, and the innermost layer is in a right direction.
10. Use of a cable insulation according to claims 1-7 for the preparation of low voltage cables, medium voltage cables, high voltage cables, automotive cables, communication cables and home decoration cables.
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CN106750741A (en) * 2016-11-28 2017-05-31 安徽瑞研新材料技术研究院有限公司 A kind of refractory polyethylene material cable
CN111363226A (en) * 2020-04-09 2020-07-03 江苏法斯特电力科技有限公司 Low-temperature-resistant high-density polyethylene power cable protection pipe
CN112646262A (en) * 2020-12-21 2021-04-13 河北中联银杉新材料有限公司 Insulating material of photovoltaic cable

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CN106750741A (en) * 2016-11-28 2017-05-31 安徽瑞研新材料技术研究院有限公司 A kind of refractory polyethylene material cable
CN111363226A (en) * 2020-04-09 2020-07-03 江苏法斯特电力科技有限公司 Low-temperature-resistant high-density polyethylene power cable protection pipe
CN112646262A (en) * 2020-12-21 2021-04-13 河北中联银杉新材料有限公司 Insulating material of photovoltaic cable

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