CN114582562A - Light microwave cable and preparation method thereof - Google Patents

Light microwave cable and preparation method thereof Download PDF

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CN114582562A
CN114582562A CN202210382128.3A CN202210382128A CN114582562A CN 114582562 A CN114582562 A CN 114582562A CN 202210382128 A CN202210382128 A CN 202210382128A CN 114582562 A CN114582562 A CN 114582562A
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elastomer
chloro
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wire core
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叶佳
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
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    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
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    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/38—Polysiloxanes modified by chemical after-treatment
    • C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
    • C08G77/392—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing sulfur
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    • 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
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    • 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
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    • C08K9/04—Ingredients treated with organic substances
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • H—ELECTRICITY
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    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/016—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing co-axial cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/016—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing co-axial cables
    • H01B13/0165—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing co-axial cables of the layers outside the outer conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
    • H01P11/005—Manufacturing coaxial lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/06—Coaxial lines
    • 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
    • C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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    • C08K2201/01—Magnetic additives
    • C—CHEMISTRY; METALLURGY
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation

Abstract

The invention discloses a light microwave cable and a preparation method thereof, and relates to the technical field of communication. The invention is to polymerize 2-fluoro-5-chloro isophthalic acid and 2-fluoro-5-chloro m-phenylenediamine, and end-capping with p-hydroxybenzoic acid and p-hydroxyaniline to obtain a spiral elastomer, reacting the spiral elastomer with hydroxymethyl trimethoxy silane and sodium hydrosulfide in sequence to obtain a modified organic silicon elastomer, mixing and coating the modified organic silicon elastomer and polyethylene glycol on a copper wire, heating and curing, washing with alcohol and drying to obtain a wire core, introducing argon into the pores of the wire core, loading an adhesive on the surface of the wire core under a low temperature condition, coating a magnetic shielding liquid on the wire core loaded with the adhesive under a pressurizing condition, and curing to obtain the light microwave cable. The light microwave cable prepared by the invention has light weight, good heat insulation performance and tear-off resistance, and the self-repairing performance of the outer protective sleeve in damage.

Description

Light microwave cable and preparation method thereof
Technical Field
The invention relates to the technical field of communication, in particular to a light microwave cable and a preparation method thereof.
Background
The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. Since the 80 th of the 20 th century, with the rapid development of modern military technology, higher use requirements are put forward on phase-stabilized coaxial cables, the use frequency is developed from centimeter waves to millimeter waves, and the use environment is severer day by day, so that phase-stabilized coaxial cable products with more structures are developed and are more and more widely applied to the fields of phased array radars, electronic warfare equipment and the like.
The microwave cable has the advantages that the structure is complex, the weight is heavy, the production cost is high, industrial production is difficult, the light microwave cable manufactured by the invention has a simple structure, the shielding material and the sheath are compounded, the heat insulation performance and the anti-tearing and anti-dropping performance are good, and the self-repairing effect is achieved.
Disclosure of Invention
The invention aims to provide a light microwave cable and a preparation method thereof, and aims to solve the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
a lightweight microwave cable, characterized in that the cable is made by the steps of:
(1) modification of the silicone elastomer: polymerizing 2-fluoro-5-chloro-isophthalic acid and 2-fluoro-5-chloro-m-phenylenediamine, and carrying out end capping by using p-hydroxyaniline and p-hydroxybenzoic acid to prepare a spiral elastomer, and reacting the spiral elastomer with hydroxymethyl trimethoxy silane and sodium hydrosulfide in sequence to prepare a modified organic silicon elastomer;
(2) heating and curing: coating the modified organic silicon elastomer and polyethylene glycol on a copper wire in a mixing manner, and heating and curing to obtain a wire core;
(3) and (3) low-temperature gluing: argon enters the holes of the wire core, and the adhesive is loaded on the surface of the wire core under the low-temperature condition;
(4) high-voltage application of the shielding layer: and coating the magnetic shielding liquid on the wire core loaded with the adhesive under a pressurizing condition, and curing to obtain the light microwave cable.
Preferably, the spiral elastomer is prepared by polymerizing 2-fluoro-5-chloro-isophthalic acid and 2-fluoro-5-chloro-m-phenylenediamine and performing end capping by using p-hydroxy-aniline and p-hydroxybenzoic acid.
Preferably, the magnetic shielding liquid is prepared by adding ammonia water and oleic acid into ferric chloride and ferrous chloride solution to react to prepare magnetic shielding particles, and adding the magnetic shielding particles into polyvinyl chloride heated to a viscous state and stirring.
As optimization, the preparation method of the light microwave cable mainly comprises the following preparation steps:
(1) modification of the silicone elastomer: polymerizing 2-fluoro-5-chloro-isophthalic acid and 2-fluoro-5-chloro-m-phenylenediamine, and carrying out end capping by using p-hydroxyaniline and p-hydroxybenzoic acid to prepare a spiral elastomer, and reacting the spiral elastomer with hydroxymethyl trimethoxy silane and sodium hydrosulfide in sequence to prepare a modified organic silicon elastomer;
(2) heating and curing: coating the modified organic silicon elastomer and polyethylene glycol on a copper wire in a mixing manner, heating and curing, and then washing with alcohol and drying to obtain a wire core;
(3) and (3) low-temperature gluing: argon enters the pores of the wire core, and the adhesive is loaded on the surface of the wire core under the low-temperature condition;
(4) high-voltage application shield layer: and coating the magnetic shielding liquid on the wire core loaded with the adhesive under a pressurizing condition, and curing to obtain the light microwave cable.
As optimization, the low-temperature condition is-8 to-5 ℃.
Preferably, the pressurizing condition is 0.5-0.8 MPa.
As optimization, the preparation method of the light microwave cable mainly comprises the following preparation steps:
(1) modification of the silicone elastomer: mixing a spiral elastomer with hydroxymethyl trimethoxy silane and tetrahydrofuran according to a mass ratio of 1: 1: 15-1: 2: 20, uniformly mixing, adding triphenylphosphine with the mass of 0.01-0.03 time of that of hydroxymethyl trimethoxy silane and diisopropyl azodicarboxylate with the mass of 0.01-0.03 time of that of hydroxymethyl trimethoxy silane at 0-5 ℃, stirring and reacting for 8-12 h at 10-20 ℃ and 1500-2000 r/min, drying for 6-8 h at-10 to-1 ℃ and 5-10 Pa to prepare an organic silicon elastomer, and mixing the organic silicon elastomer and water according to a mass ratio of 1: 15-1: 20, uniformly mixing, adding sodium hydrosulfide with the mass 0.3-0.5 times of that of the organic silicon elastomer, stirring at the rotating speed of 1800-2000 r/min for 60-80 min under the nitrogen atmosphere at the temperature of 80-90 ℃, filtering, washing with deionized water for 3-5 times, and drying at the temperature of-10-1 ℃ and the pressure of 3-8 Pa for 6-8 h to obtain the modified organic silicon elastomer;
(2) heating and curing: mixing the modified organic silicon elastomer and polyethylene glycol according to a mass ratio of 1: 1.3-1: 1.5, uniformly mixing to form a coating solution, coating the surface of a copper wire with the coating solution at 130-150 ℃ until the thickness of the copper wire is 2-3 mm, heating to 250-280 ℃ at the speed of 5 ℃/min, rotating the copper wire at the speed of 50-80 r/min, keeping for 30-40 min, cooling to 10-20 ℃, then soaking and washing with ethanol for 3-5 min, and drying at the temperature of-10-1 ℃ and 3-8 Pa for 6-8 h to obtain a wire core;
(3) and (3) low-temperature gluing: placing the wire core in a vacuum chamber, vacuumizing at 10-30 ℃ to make the pressure reach 3-5 Pa, introducing argon to make the air pressure reach 0.3-0.5 MPa and keeping for 30-40 min, cooling to-8-5 ℃, and adding 0.3-0.5 g/cm of adhesive at normal pressure2Coating the amount of the adhesive on the surface of the wire core to obtain the wire core loaded with the adhesive;
(4) high-voltage application shield layer: and coating the magnetic shielding liquid on the surface of the wire core loaded with the adhesive to a thickness of 2-3 mm at 150-160 ℃ and 0.5-0.8 MPa, rotating the wire core loaded with the adhesive at 50-80 r/min for 20-30 min, and cooling to 10-30 ℃ for 30-50 min to obtain the light microwave cable.
As optimization, the preparation method of the spiral elastomer in the step (1) comprises the following steps: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water in a mass ratio of 1: 1: 3: 3-1: 1: 5: 5, uniformly mixing, adding carbodiimide with the mass of 0.01-0.03 time of that of 2-fluoro-5-chloro-isophthalic acid, reacting for 2-3 h at 20-30 ℃, filtering, washing for 3-5 times by using absolute ethyl alcohol, then placing into a dimethyl sulfoxide solution with the mass fraction of 15-20 times of that of 2-fluoro-5-chloro-isophthalic acid and the mass fraction of 40-50%, adding p-hydroxyamine with the mass fraction of 0.3-0.5 time of that of 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid with the mass fraction of 0.3-0.5 time of that of 2-fluoro-5-chloro-isophthalic acid and carbodiimide with the mass fraction of 0.01-0.03 time of that of 2-fluoro-5-chloro-isophthalic acid, reacting for 2-3 h at 20-30 ℃, washing for 3-5 times by using absolute ethyl alcohol after filtering, drying for 6-8 h at-10 Pa, -1 ℃ and 5-10 Pa, is prepared.
Preferably, the magnetic shielding liquid in the step (4) is prepared by heating polyvinyl chloride to 160-180 ℃ and keeping the temperature for 8-10 min, adding magnetic shielding particles with the mass of 0.3-0.5 time of that of the polyvinyl chloride, and stirring at 1500-2000 r/min for 20-30 min while keeping the temperature unchanged.
As optimization, the preparation method of the magnetic shielding particles comprises the following steps: mixing ferric chloride, ferrous chloride and pure water according to a mass ratio of 5: 2: 20-5: 2: 25, uniformly mixing, heating to 80-90 ℃ in a nitrogen atmosphere, stirring for 3-5 min at 1500-2000 r/min, adding ammonia water with the mass fraction of 50% 2-3 times that of the ferric chloride, continuing to stir for 15-20 min at 1500-2000 r/min, adding oleic acid with the mass of 0.8-1.2 times that of the ferric chloride, continuing to stir for 8-12 min at 1500-2000 r/min, collecting by using a magnet, washing for 3-5 times by using pure water, and drying for 4-6 h at 60-70 ℃ in a nitrogen atmosphere to prepare the iron-based catalyst.
Compared with the prior art, the invention has the following beneficial effects:
when the light microwave cable is prepared, the modified organic silicon elastomer is firstly prepared, the modified organic silicon elastomer is coated on a copper wire to be heated and cured to form a porous elastic layer, then low-temperature gluing is carried out, inert gas is filled in pores, an adhesive is coated on the surface of the pores, finally a shielding layer is applied under high pressure, and magnetic shielding liquid is coated on an outer layer under a pressurized melting state to form an outer layer sheath to prepare the light microwave cable
Firstly, 2-fluoro-5-chloro isophthalic acid and 2-fluoro-5-chloro metaphenylene diamine react to form a spiral elastomer, then the spiral elastomer reacts with hydroxymethyl trimethoxy silane to form an organic silicon elastomer, the organic silicon elastomer reacts with sodium hydrosulfide to convert chlorine into sulfydryl to prepare a modified organic silicon elastomer, the modified organic silicon elastomer forms a conjugated hydrogen bond chelating ring by hydrogen atoms connected with nitrogen atoms on an amide group and fluorine atoms on adjacent 2-fluoro-5-chloro isophthalic acid monomers and 2-fluoro-5-chloro metaphenylene diamine monomers respectively, a spring-shaped spiral structure is formed under the coplanar trend, the modified organic silicon elastomer has the buffer protection function, the conjugated hydrogen bond chelating ring can achieve the heat preservation effect by ring-opening heat absorption and ring-closing heat release, and silicon hydroxyl on the end of the organic silicon has good bonding function with metal and the silicon hydroxyl and the metal and the silicon hydroxyl are not easy to fall off, the copper wire can be protected after being modified by sodium hydrosulfide, so that the oxidation corrosion is prevented; the copper wire is coated by the modified organic silicon elastomer and is heated to be cured to form a porous elastic layer, the organic silicon end on the modified organic silicon elastomer is decomposed into micromolecular organic matters and silicon hydroxyl, the micromolecular organic matters can volatilize to form pores, the buffering performance of the material is improved, the density of the material is reduced, the silicon hydroxyl directly has good bonding performance mutually, and is bonded on the surface of the copper wire in a silicon-oxygen bond mode, the bonding capacity of the material is improved, the material is not easy to fall off, meanwhile, the sulfydryl on the modified organic silicon elastomer is mutually crosslinked to form a disulfide bond, the mechanical property of the material is further improved, and the material is prevented from sliding and falling off.
Secondly, ventilating the porous elastic layer to fill inert gas in the pores, loading an adhesive, gluing at low temperature to increase the density of gas in the pores, condensing the adhesive, facilitating loading, increasing the gas in the pores, increasing the air pressure, improving the buffer protection effect, loading the adhesive on the surface layer, preventing the adhesive from permeating into the pores and causing pore blockage to reduce the heat preservation buffer effect; the magnetic shielding liquid is coated on the outer layer and forms an outer layer sheath in a pressurized melting state, the adhesive is melted and the magnetic shielding liquid is bonded on the interface by the pressurized melting, part of the magnetic shielding liquid enters pores of the porous elastic layer to improve the mortise force of the interface, so that the material is not easy to loosen and fall off, meanwhile, the modified organic silicon elastomer is compressed, the elastic potential energy of a spring-shaped spiral structure in the modified organic silicon elastomer is increased, the deformation recovery and stress protection performance of the material are improved, when the outer layer sheath is damaged to generate gaps, the modified organic silicon elastomer drives the adhesive to overflow into the pores under the action of the elastic potential energy and contacts the air environment to volatilize and solidify, and meanwhile, free silicon hydroxyl on the porous elastic layer has a synergistic effect, so that the material has self-repairing performance, and simultaneously has a good electromagnetic protection effect, and the use effect of the microwave cable is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to more clearly illustrate the method provided by the present invention, the following examples are provided to illustrate the method for testing each index of the lightweight microwave cable manufactured in the following examples as follows:
thermal insulation performance: the length of the light microwave cable obtained in each example is the same as that of the comparative example material, the surface of the outer sleeve with the same area is heated for the same time at the same temperature, and the temperature change of the copper wire inside is measured.
Self-repairing performance: the length of the light microwave cable obtained in each embodiment is the same as that of the comparative example material, the tensile breaking strength is measured, a penetration scratch with the same size and shape is formed on the surface sheath by a knife, the tensile breaking strength is measured again after the light microwave cable is placed still under the normal temperature and the normal pressure, and the repair rate, namely the self-repairing breaking strength/the initial breaking strength, is calculated and recorded.
Tear shedding resistance: the light microwave cable obtained in each example and the comparative example material were taken to have the same length, the surface was beveled at the same angle and the same depth, the cable was pulled out at the same angle from the bevel, and the tension at which tearing had just occurred was recorded.
Example 1
A preparation method of the light microwave cable mainly comprises the following preparation steps:
(1) modification of the silicone elastomer: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water in a mass ratio of 1: 1: 3: 3, evenly mixing, adding carbodiimide with the mass of 0.01 time of that of the 2-fluoro-5-chloro-isophthalic acid, reacting for 3h at 20 ℃, filtering, washing for 3 times by using absolute ethyl alcohol, then placing in 50 percent dimethyl sulfoxide solution with the mass fraction of 15 times that of the 2-fluoro-5-chloro-isophthalic acid, adding p-hydroxyamine 0.3 times of the mass of 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid 0.3 times of the mass of 2-fluoro-5-chloro-isophthalic acid and carbodiimide 0.01 times of the mass of 2-fluoro-5-chloro-isophthalic acid, reacting at 20 ℃ for 3h, filtering, washing with absolute ethyl alcohol for 3 times, drying at-10 ℃ under 5Pa for 8h to obtain a spiral elastomer, mixing the spiral elastomer with hydroxymethyl trimethoxy silane and tetrahydrofuran according to a mass ratio of 1: 1: 15, uniformly mixing, adding triphenylphosphine with the mass of 0.01 time of that of the hydroxymethyl trimethoxy silane and diisopropyl azodicarboxylate with the mass of 0.01 time of that of the hydroxymethyl trimethoxy silane at 0 ℃, stirring and reacting at 10 ℃ and 1500r/min for 12 hours, drying at-10 ℃ and 5Pa for 8 hours to prepare an organic silicon elastomer, mixing the organic silicon elastomer and water according to a mass ratio of 1: 15, uniformly mixing, adding sodium hydrosulfide with the mass 0.3 times that of the organic silicon elastomer, stirring for 80min at the rotating speed of 1800r/min under the nitrogen atmosphere at the temperature of 80 ℃, filtering, washing for 3 times by using deionized water, and drying for 8h at the temperature of minus 10 ℃ under 3Pa to obtain the modified organic silicon elastomer;
(2) heating and curing: mixing the modified organic silicon elastomer and polyethylene glycol according to a mass ratio of 1: 1.3, uniformly mixing to form a coating solution, coating the surface of a copper wire with the coating solution to a thickness of 2mm at 130 ℃, heating to 250 ℃ at a speed of 5 ℃/min, rotating the copper wire at a speed of 50r/min for 30min, cooling to 10 ℃, then soaking and washing with ethanol for 3min, and drying at-10 ℃ under 3Pa for 8h to obtain a wire core;
(3) and (3) low-temperature gluing: placing the wire core in a vacuum chamber, vacuumizing at 10 deg.C to make pressure reach 3Pa, introducing argon to make pressure reach 0.3MPa and maintaining for 40min, cooling to-8 deg.C, and making the adhesive at 0.3g/cm under normal pressure2Coating the amount of the adhesive on the surface of the wire core to obtain the wire core loaded with the adhesive;
(4) high-voltage application shield layer: mixing ferric chloride, ferrous chloride and pure water according to a mass ratio of 5: 2: 20, uniformly mixing, heating to 80 ℃ in a nitrogen atmosphere, stirring for 5min at 1500r/min, adding ammonia water with the mass fraction of 50% 2 times that of the ferric chloride, continuously stirring for 20min at 1500r/min, adding oleic acid with the mass of 0.8 time that of the ferric chloride, continuously stirring for 12min at 1500r/min, collecting by using a magnet, washing for 3 times by using pure water, and drying for 6h at 60 ℃ in the nitrogen atmosphere to obtain magnetic shielding particles; heating polyvinyl chloride to 160 ℃ and keeping for 10min, adding magnetic shielding particles with the mass of 0.3 time of that of the polyvinyl chloride, keeping the temperature unchanged, stirring at 1500r/min for 30min to obtain magnetic shielding liquid, coating the magnetic shielding liquid on the surface of the wire core loaded with the adhesive to a thickness of 2mm at 150 ℃ and 0.8MPa, rotating the wire core loaded with the adhesive at 50r/min for 30min, cooling to 10 ℃ and keeping for 50min to obtain the light microwave cable.
Example 2
A preparation method of the light microwave cable mainly comprises the following preparation steps:
(1) modification of the silicone elastomer: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water in a mass ratio of 1: 1: 4: 4, evenly mixing, adding carbodiimide with the mass of 0.02 time of that of the 2-fluoro-5-chloro-isophthalic acid, reacting for 2.5h at 25 ℃, filtering, washing for 4 times by using absolute ethyl alcohol, then placing in a dimethyl sulfoxide solution with the mass fraction of 45 percent and 18 times of that of the 2-fluoro-5-chloro-isophthalic acid, adding p-hydroxyamine accounting for 0.4 time of the mass of the 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid accounting for 0.4 time of the mass of the 2-fluoro-5-chloro-isophthalic acid and carbodiimide accounting for 0.02 time of the mass of the 2-fluoro-5-chloro-isophthalic acid, reacting for 2.5h at 25 ℃, filtering, washing with absolute ethyl alcohol for 4 times, drying for 7h at-5 ℃ under 8Pa to obtain a spiral elastomer, mixing the spiral elastomer with hydroxymethyl trimethoxy silane and tetrahydrofuran according to a mass ratio of 1: 1: 18, uniformly mixing, adding triphenylphosphine with the mass of 0.02 time of that of hydroxymethyl trimethoxy silane and diisopropyl azodicarboxylate with the mass of 0.02 time of that of hydroxymethyl trimethoxy silane at the temperature of 3 ℃, stirring and reacting at the temperature of 15 ℃ and 1800r/min for 10 hours, drying at the temperature of-5 ℃ and 8Pa for 7 hours to prepare an organic silicon elastomer, and mixing the organic silicon elastomer with water according to the mass ratio of 1: 18, uniformly mixing, adding sodium hydrosulfide with the mass 0.4 times that of the organic silicon elastomer, stirring for 70min at the rotating speed of 1900r/min under the nitrogen atmosphere at the temperature of 85 ℃, filtering, washing for 4 times by using deionized water, and drying for 7h at the temperature of-5 ℃ and 5Pa to obtain the modified organic silicon elastomer;
(2) heating and curing: modifying the organic silicon elastomer and polyethylene glycol according to the mass ratio of 1: 1.4, uniformly mixing to form a coating solution, coating the surface of a copper wire with the coating solution at 140 ℃ to a thickness of 2.5mm, heating to 260 ℃ at a speed of 5 ℃/min, rotating the copper wire at a speed of 65r/min for 35min, cooling to 15 ℃, then soaking and washing with ethanol for 4min, and drying at a temperature of-5 ℃ and 5Pa for 7h to obtain a wire core;
(3) and (3) low-temperature gluing: placing the wire core in a vacuum chamber, vacuumizing at 20 deg.C to make pressure reach 4Pa, introducing argon to make pressure reach 0.4MPa, maintaining for 35min, cooling to-6 deg.C, and making the adhesive at 0.4g/cm under normal pressure2Coating the amount of the adhesive on the surface of the wire core to obtain the wire core loaded with the adhesive;
(4) high-voltage application shield layer: mixing ferric chloride, ferrous chloride and pure water according to a mass ratio of 5: 2: 23, uniformly mixing, heating to 85 ℃ in a nitrogen atmosphere, stirring at 1800r/min for 4min, adding ammonia water with the mass fraction of 50% 2.5 times that of the ferric chloride, continuously stirring at 1800r/min for 18min, adding oleic acid with the mass of 1 time that of the ferric chloride, continuously stirring at 1800r/min for 10min, collecting by using a magnet, washing for 4 times by using pure water, and drying at 65 ℃ in a nitrogen atmosphere for 5h to obtain magnetic shielding particles; heating polyvinyl chloride to 170 ℃ and keeping the temperature for 9min, adding magnetic shielding particles with the mass of 0.4 time of that of the polyvinyl chloride, keeping the temperature unchanged, stirring at 1800r/min for 25min to obtain magnetic shielding liquid, coating the magnetic shielding liquid on the surface of a wire core loaded with an adhesive at 155 ℃ and 0.6MPa to a thickness of 2.5mm, rotating the wire core loaded with the adhesive at 65r/min for 25min, cooling to 20 ℃ and keeping the temperature for 40min to obtain the light microwave cable.
Example 3
A preparation method of the light microwave cable mainly comprises the following preparation steps:
(1) modification of the silicone elastomer: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water in a mass ratio of 1: 1: 5: 5, evenly mixing, adding carbodiimide with the mass of 0.03 time of that of the 2-fluoro-5-chloro-isophthalic acid, reacting for 2h at 30 ℃, filtering, washing for 5 times by using absolute ethyl alcohol, then placing in a dimethyl sulfoxide solution with the mass fraction of 20 times that of the 2-fluoro-5-chloro-isophthalic acid and the concentration of 40 percent, adding p-hydroxyamine 0.5 times of the mass of 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid 0.5 times of the mass of 2-fluoro-5-chloro-isophthalic acid and carbodiimide 0.03 times of the mass of 2-fluoro-5-chloro-isophthalic acid, reacting at 30 ℃ for 2h, filtering, washing with absolute ethyl alcohol for 5 times, drying at-1 ℃ under 10Pa for 6h to obtain a spiral elastomer, mixing the spiral elastomer with hydroxymethyl trimethoxy silane and tetrahydrofuran according to a mass ratio of 1: 2: 20, uniformly mixing, adding triphenylphosphine with the mass of 0.03 time of hydroxymethyl trimethoxy silane and diisopropyl azodicarboxylate with the mass of 0.03 time of hydroxymethyl trimethoxy silane at the temperature of 5 ℃, stirring and reacting for 8 hours at the temperature of 20 ℃ and 2000r/min, drying for 6 hours at the temperature of-1 ℃ and 10Pa to prepare an organic silicon elastomer, and mixing the organic silicon elastomer and water according to the mass ratio of 1: 20, uniformly mixing, adding sodium hydrosulfide with the mass 0.5 times of that of the organic silicon elastomer, stirring for 60min at the rotating speed of 2000r/min under the nitrogen atmosphere at the temperature of 90 ℃, washing for 5 times by using deionized water after filtering, and drying for 8h at the temperature of-1 ℃ and 8Pa to obtain a modified organic silicon elastomer;
(2) heating and curing: mixing the modified organic silicon elastomer and polyethylene glycol according to a mass ratio of 1: 1.5, uniformly mixing to form a coating solution, coating the coating solution on the surface of a copper wire to a thickness of 3mm at 150 ℃, heating to 280 ℃ at a speed of 5 ℃/min, rotating the copper wire at a speed of 80r/min for 30min, cooling to 20 ℃, then soaking and washing with ethanol for 3min, and drying at-1 ℃ and 8Pa for 6h to obtain a wire core;
(3) And (3) low-temperature gluing: placing the wire core in a vacuum chamber, vacuumizing at 30 deg.C to make pressure reach 5Pa, introducing argon to make pressure reach 0.5MPa, maintaining for 30min, cooling to-5 deg.C, and adding adhesive at 0.5g/cm under normal pressure2Coating the amount of the adhesive on the surface of the wire core to obtain the wire core loaded with the adhesive;
(4) high-voltage application shield layer: mixing ferric chloride, ferrous chloride and pure water according to a mass ratio of 5: 2: 25, uniformly mixing, heating to 90 ℃ in a nitrogen atmosphere, stirring for 3min at 2000r/min, adding ammonia water with the mass fraction of 50% and the mass of 3 times of that of the ferric chloride, continuing to stir for 15min at 2000r/min, adding oleic acid with the mass of 1.2 times of that of the ferric chloride, continuing to stir for 8min at 2000r/min, collecting by using a magnet, washing for 5 times by using pure water, and drying for 6h at 70 ℃ in a nitrogen atmosphere to obtain magnetic shielding particles; heating polyvinyl chloride to 180 ℃ and keeping the temperature for 8min, adding magnetic shielding particles which are 0.5 time of the mass of the polyvinyl chloride, keeping the temperature unchanged, stirring at 2000r/min for 20min to obtain magnetic shielding liquid, coating the magnetic shielding liquid on the surface of a wire core loaded with an adhesive to a thickness of 3mm at 160 ℃ and 0.8MPa, rotating the wire core loaded with the adhesive at 80r/min for 20min, cooling to 30 ℃ and keeping for 30min to obtain the light microwave cable.
Comparative example 1
The preparation method of the light microwave cable of comparative example 1 is different from that of example 2 in the difference of step (1), and step (1) is modified as follows: modification of the silicone elastomer: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water according to a mass ratio of 1: 1: 4: 4, evenly mixing, adding carbodiimide with the mass of 0.02 time of that of the 2-fluoro-5-chloro-isophthalic acid, reacting for 2.5h at 25 ℃, filtering, washing for 4 times by using absolute ethyl alcohol, then placing in a dimethyl sulfoxide solution with the mass fraction of 45 percent and 18 times of that of the 2-fluoro-5-chloro-isophthalic acid, adding p-hydroxyamine 0.4 times of the mass of 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid 0.4 times of the mass of 2-fluoro-5-chloro-isophthalic acid and carbodiimide 0.02 times of the mass of 2-fluoro-5-chloro-isophthalic acid, reacting for 2.5h at 25 ℃, filtering, washing with absolute ethyl alcohol for 4 times, drying for 7h at-5 ℃ under 8Pa to obtain a spiral elastomer, mixing the spiral elastomer with hydroxymethyl trimethoxy silane and tetrahydrofuran according to a mass ratio of 1: 1: 18, adding triphenylphosphine the mass of which is 0.02 time of that of the hydroxymethyl trimethoxy silane and diisopropyl azodicarboxylate the mass of which is 0.02 time of that of the hydroxymethyl trimethoxy silane into the mixture at the temperature of 3 ℃, stirring the mixture at the temperature of 15 ℃ and 1800r/min for reaction for 10 hours, drying the mixture at the temperature of-5 ℃ and 8Pa for 7 hours, and preparing the modified organic silicon elastomer. The rest of the procedure was the same as in example 2.
Comparative example 2
The preparation method of the lightweight microwave cable of comparative example 2 is different from that of example 2 in the difference of step (1), and step (1) is modified as follows: modification of organic elastomer: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water in a mass ratio of 1: 1: 4: 4, adding carbodiimide with the mass of 0.02 time of that of the 2-fluoro-5-chloro-isophthalic acid, reacting for 2.5 hours at 25 ℃, washing for 4 times by using absolute ethyl alcohol after filtering, then placing the mixture into a 45% dimethyl sulfoxide solution with the mass of 18 times of that of the 2-fluoro-5-chloro-isophthalic acid, adding p-hydroxyamine with the mass of 0.4 time of that of the 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid with the mass of 0.4 time of that of the 2-fluoro-5-chloro-isophthalic acid and carbodiimide with the mass of 0.02 time of that of the 2-fluoro-5-chloro-isophthalic acid, reacting for 2.5 hours at 25 ℃, washing for 4 times by using absolute ethyl alcohol after filtering, drying for 7 hours at-5 ℃ and 8Pa, and preparing the modified organic elastomer. The rest of the procedure was the same as in example 2.
Comparative example 3
The preparation method of the light microwave cable of comparative example 3 is different from that of example 2 in the difference of step (3), and the step (3) is modified as follows: gluing: placing the wire core in a vacuum chamber, vacuumizing at 20 deg.C to make pressure reach 4Pa, introducing argon to make pressure reach 0.4MPa, maintaining for 35min, maintaining temperature, and adding 0.4g/cm of adhesive under normal pressure2The amount of the adhesive is coated on the surface of the wire core, and the wire core loaded with the adhesive is prepared. The rest of the procedure was the same as in example 2.
Comparative example 4
The preparation method of the lightweight microwave cable of comparative example 4 is different from that of example 2 in the difference of step (4), and step (4) is modified as follows: applying a shielding layer: mixing ferric chloride, ferrous chloride and pure water according to a mass ratio of 5: 2: 23, uniformly mixing, heating to 85 ℃ in a nitrogen atmosphere, stirring at 1800r/min for 4min, adding ammonia water with the mass fraction of 50% 2.5 times that of the ferric chloride, continuously stirring at 1800r/min for 18min, adding oleic acid with the mass of 1 time that of the ferric chloride, continuously stirring at 1800r/min for 10min, collecting by using a magnet, washing for 4 times by using pure water, and drying at 65 ℃ in a nitrogen atmosphere for 5h to obtain magnetic shielding particles; heating polyvinyl chloride to 170 ℃ and keeping the temperature for 9min, adding magnetic shielding particles with the mass of 0.4 time of that of the polyvinyl chloride, keeping the temperature unchanged, stirring at 1800r/min for 25min to obtain magnetic shielding liquid, coating the magnetic shielding liquid on the surface of a wire core loaded with an adhesive at 155 ℃ and 0.1MPa to a thickness of 2.5mm, rotating the wire core loaded with the adhesive at 65r/min for 25min, cooling to 20 ℃ and keeping the temperature for 40min to obtain the light microwave cable. The rest of the procedure was the same as in example 2.
Effects of the invention
Table 1 below shows the results of performance analysis of the insulation performance, self-repair performance, and tear-off resistance of the light-weight microwave cables according to examples 1 to 3 and comparative examples 1 to 4 of the present invention.
TABLE 1
Figure BDA0003592262100000091
As can be seen from the comparison of the experimental data of examples 1, 2 and 3 and comparative example 1 in table 1, the tensile force of examples 1, 2 and 3 compared with comparative example 1 is high, which indicates that after the silicone elastomer is modified by sodium hydrosulfide, during the heating and curing process, the mercapto groups on the modified silicone elastomer are mutually crosslinked to form disulfide bonds, so that the sliding and falling off are prevented, and the tearing and falling off resistance of the light microwave cable is improved; the embodiment 1, the embodiment 2 and the embodiment 3 have higher pulling force and repair rate compared with the comparative example 2, which shows that the spiral elastomer is reacted with hydroxymethyl trimethoxy silane to prepare the organic silicon elastomer, and then the organic silicon elastomer is reacted with sodium hydrosulfide to prepare the modified organic silicon elastomer, and the silicon hydroxyl on the modified organic silicon elastomer is interacted with the adhesive to promote the repair of the surface of the light microwave cable, so that the self-repair effect of the light microwave cable is improved, the direct interaction of the silicon hydroxyl and the bonding effect of the silicon hydroxyl with a copper wire are improved, and the anti-tearing and anti-dropping performance of the light microwave cable is improved; compared with experimental data of comparative examples 3 in examples 1, 2 and 3, the experimental data show that the temperature variation of the comparative examples 3 in examples 1, 2 and 3 is low, which indicates that the adhesive is loaded at low temperature, is viscous and condensed at low temperature, is not easy to permeate into pores and cause pore blockage, and improves the heat insulation performance of the light microwave cable; as can be seen from the comparison of the experimental data of examples 1, 2, 3 versus comparative example 4, the high repair rate and tensile strength of examples 1, 2, 3 versus comparative example 4, illustrates the use of higher compressive forces during the application of the barrier layer at high pressure, can lead the magnetic shielding liquid to partially enter the pores of the porous elastic layer to improve the mortise force of the interface, lead the material not to be easy to loosen and fall off, improve the anti-tearing and falling-off performance of the light microwave cable, meanwhile, the high pressure also compresses the modified organic silicon elastomer in the material, so that the elastic potential energy of the spring-shaped spiral structure in the modified organic silicon elastomer is increased, when the outer layer sheath is damaged to generate a gap, the modified organic silicon elastomer drives the adhesive to overflow into the pores under the action of elastic potential energy, so that the adhesive can better overflow into the pores under the action of air pressure and is solidified in an air environment, and the self-repairing effect of the light microwave cable is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. A lightweight microwave cable, characterized in that the cable is made by the steps of:
(1) modification of the silicone elastomer: polymerizing 2-fluoro-5-chloro-isophthalic acid and 2-fluoro-5-chloro-m-phenylenediamine, and carrying out end capping by using p-hydroxyaniline and p-hydroxybenzoic acid to prepare a spiral elastomer, and reacting the spiral elastomer with hydroxymethyl trimethoxy silane and sodium hydrosulfide in sequence to prepare a modified organic silicon elastomer;
(2) heating and curing: coating the modified organic silicon elastomer and polyethylene glycol on a copper wire in a mixing manner, and heating and curing to obtain a wire core;
(3) and (3) low-temperature gluing: argon enters the pores of the wire core, and the adhesive is loaded on the surface of the wire core under the low-temperature condition;
(4) high-voltage application of the shielding layer: and coating the magnetic shielding liquid on the wire core loaded with the adhesive under a pressurizing condition, and curing to obtain the light microwave cable.
2. The lightweight microwave cable according to claim 1, wherein the helical elastomer is prepared by polymerizing 2-fluoro-5-chloroisophthalic acid and 2-fluoro-5-chlorom-phenylenediamine and end-capping with p-hydroxy-aniline and p-hydroxy-benzoic acid.
3. A light weight microwave cable as claimed in claim 2, wherein the magnetic shielding liquid is prepared by adding ammonia water and oleic acid into ferric chloride and ferrous chloride solution to react to obtain magnetic shielding particles, adding the magnetic shielding particles into polyvinyl chloride heated to viscous state, and stirring.
4. A lightweight microwave cable as claimed in claim 3, said low temperature condition being-8 to-5 ℃.
5. A lightweight microwave cable as claimed in claim 4, wherein the compression conditions are 0.5 to 0.8 MPa.
6. The lightweight microwave cable according to claim 5, wherein the preparation method of the lightweight microwave cable mainly comprises the following preparation steps:
(1) modification of the silicone elastomer: mixing a spiral elastomer with hydroxymethyl trimethoxy silane and tetrahydrofuran according to a mass ratio of 1: 1: 15-1: 2: 20, uniformly mixing, adding triphenylphosphine with the mass of 0.01-0.03 time of that of hydroxymethyl trimethoxy silane and diisopropyl azodicarboxylate with the mass of 0.01-0.03 time of that of hydroxymethyl trimethoxy silane at 0-5 ℃, stirring and reacting for 8-12 h at 10-20 ℃ and 1500-2000 r/min, drying for 6-8 h at-10 to-1 ℃ and 5-10 Pa to prepare an organic silicon elastomer, and mixing the organic silicon elastomer and water according to a mass ratio of 1: 15-1: 20, uniformly mixing, adding sodium hydrosulfide with the mass 0.3-0.5 times of that of the organic silicon elastomer, stirring at the rotating speed of 1800-2000 r/min for 60-80 min under the nitrogen atmosphere at the temperature of 80-90 ℃, filtering, washing with deionized water for 3-5 times, and drying at the temperature of-10-1 ℃ and the pressure of 3-8 Pa for 6-8 h to obtain the modified organic silicon elastomer;
(2) heating and curing: modifying the organic silicon elastomer and polyethylene glycol according to the mass ratio of 1: 1.3-1: 1.5, uniformly mixing to form a coating solution, coating the surface of a copper wire with the coating solution at 130-150 ℃ until the thickness of the copper wire is 2-3 mm, heating to 250-280 ℃ at the speed of 5 ℃/min, rotating the copper wire at the speed of 50-80 r/min, keeping for 30-40 min, cooling to 10-20 ℃, then soaking and washing with ethanol for 3-5 min, and drying at the temperature of-10-1 ℃ and 3-8 Pa for 6-8 h to obtain a wire core;
(3) and (3) low-temperature gluing: placing the wire core in a vacuum chamber, vacuumizing at 10-30 ℃ to make the pressure reach 3-5 Pa, introducing argon to make the air pressure reach 0.3-0.5 MPa and keeping for 30-40 min, cooling to-8-5 ℃, and adding 0.3-0.5 g/cm of adhesive at normal pressure2Coating the amount of the adhesive on the surface of the wire core to obtain the wire core loaded with the adhesive;
(4) high-voltage application shield layer: and coating the magnetic shielding liquid on the surface of the wire core loaded with the adhesive to a thickness of 2-3 mm at 150-160 ℃ and 0.5-0.8 MPa, rotating the wire core loaded with the adhesive at 50-80 r/min for 20-30 min, and cooling to 10-30 ℃ for 30-50 min to obtain the light microwave cable.
7. The method for preparing a lightweight microwave cable according to claim 6, wherein the preparation method of the spiral elastomer in the step (1) comprises the following steps: mixing 2-fluoro-5-chloro isophthalic acid, 2-fluoro-5-chloro m-phenylenediamine, dimethyl sulfoxide and pure water according to a mass ratio of 1: 1: 3: 3-1: 1: 5: 5, uniformly mixing, adding carbodiimide with the mass of 0.01-0.03 time of that of 2-fluoro-5-chloro-isophthalic acid, reacting for 2-3 h at 20-30 ℃, filtering, washing for 3-5 times by using absolute ethyl alcohol, then placing into a dimethyl sulfoxide solution with the mass fraction of 15-20 times of that of 2-fluoro-5-chloro-isophthalic acid and the mass fraction of 40-50%, adding p-hydroxyamine with the mass fraction of 0.3-0.5 time of that of 2-fluoro-5-chloro-isophthalic acid, p-hydroxybenzoic acid with the mass fraction of 0.3-0.5 time of that of 2-fluoro-5-chloro-isophthalic acid and carbodiimide with the mass fraction of 0.01-0.03 time of that of 2-fluoro-5-chloro-isophthalic acid, reacting for 2-3 h at 20-30 ℃, washing for 3-5 times by using absolute ethyl alcohol after filtering, drying for 6-8 h at-10 Pa, -1 ℃ and 5-10 Pa, is prepared.
8. The preparation method of the light microwave cable according to claim 7, wherein the magnetic shielding liquid in the step (4) is prepared by heating polyvinyl chloride to 160-180 ℃ and maintaining the temperature for 8-10 min, adding magnetic shielding particles with the mass 0.3-0.5 times of that of the polyvinyl chloride, and stirring the mixture at 1500-2000 r/min for 20-30 min while maintaining the temperature.
9. The method for preparing a lightweight microwave cable according to claim 8, wherein the magnetic shielding particles are prepared by: mixing ferric chloride, ferrous chloride and pure water according to a mass ratio of 5: 2: 20-5: 2: 25, uniformly mixing, heating to 80-90 ℃ in a nitrogen atmosphere, stirring for 3-5 min at 1500-2000 r/min, adding ammonia water with the mass fraction of 50% 2-3 times that of the ferric chloride, continuing to stir for 15-20 min at 1500-2000 r/min, adding oleic acid with the mass of 0.8-1.2 times that of the ferric chloride, continuing to stir for 8-12 min at 1500-2000 r/min, collecting by using a magnet, washing for 3-5 times by using pure water, and drying for 4-6 h at 60-70 ℃ in a nitrogen atmosphere to prepare the iron-based catalyst.
CN202210382128.3A 2022-04-12 2022-04-12 Light microwave cable and preparation method thereof Pending CN114582562A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116577886A (en) * 2023-04-10 2023-08-11 宏安集团有限公司 Special optical cable based on composite material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116577886A (en) * 2023-04-10 2023-08-11 宏安集团有限公司 Special optical cable based on composite material
CN116577886B (en) * 2023-04-10 2023-11-14 宏安集团有限公司 Special optical cable based on composite material

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