CN114388187A - Polyfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable - Google Patents
Polyfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable Download PDFInfo
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- CN114388187A CN114388187A CN202210095870.6A CN202210095870A CN114388187A CN 114388187 A CN114388187 A CN 114388187A CN 202210095870 A CN202210095870 A CN 202210095870A CN 114388187 A CN114388187 A CN 114388187A
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- ethylene propylene
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- 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
- C08K3/34—Silicon-containing compounds
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- 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
- C08K3/40—Glass
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to a polyfluorinated ethylene propylene insulating copper strip shielded high-temperature-resistant control cable, which belongs to the technical field of cable materials. During the high-temperature calcination process of the ceramifiable fluorinated ethylene propylene copolymer composite material in a muffle furnace, the low-melting-point glass powder is melted in the system, the glass powder is tightly combined with the high-melting-point synthetic mica particles, a eutectic mixture is formed at high temperature, and finally the eutectic mixture forms a regular-shaped ceramic at low temperature, so that the ceramifiable fluorinated ethylene propylene copolymer composite material has higher melting point and mechanical property compared with the original fluorinated ethylene propylene copolymer material due to the high melting point of the ceramic material.
Description
Technical Field
The invention belongs to the technical field of cable materials, and particularly relates to a polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable.
Background
At present, with the increase of the cable usage, the quality requirement of the cable is continuously improved. The cable used in the fields of computers, communication, metallurgy, ship aviation, chemical engineering and petroleum has extremely high requirements on high temperature resistance, water resistance, oil resistance, drag resistance, acid and alkali resistance, corrosion resistance and interference resistance of the cable, the application of the flame-retardant high polymer material on the cable can greatly reduce fire loss in many occasions, and the common flame-retardant high polymer material cannot meet the requirements in certain fire accidents, for example, a sheath of the cable for a nuclear power station can be melted after being heated in the fire accidents, so that power interruption can be caused, and further terrible accidents can be caused.
The polyfluorinated ethylene propylene is used as a high polymer material with excellent performance, is widely applied to cables, and has the effects of flame retardance, high temperature resistance and insulation; when the existing fluorinated ethylene propylene is used as an outer sheath of a cable, the cable has the advantages of flame retardance and high temperature resistance; however, when the ambient temperature reaches 400 ℃, the polyfluorinated ethylene propylene is rapidly melted, so that the cable is damaged.
Disclosure of Invention
The invention aims to provide a polyfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable, which solves the problem that a polyfluorinated ethylene propylene sheath in the prior art is rapidly melted at high temperature to cause cable damage.
The purpose of the invention can be realized by the following technical scheme:
a polyfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable comprises a plurality of copper conductors, wherein a polyfluorinated ethylene propylene insulating layer is fixedly extruded on the outer wall of each copper conductor, a polyester strip is fixedly extruded on the outer wall of the polyfluorinated ethylene propylene insulating layer, a shielding layer is fixedly extruded on the outer wall of the polyester strip, and a sheath is fixedly extruded outside the shielding layer; the sheath is made of a ceramifiable fluorinated ethylene propylene composite material.
Further, the ceramizable fluorinated ethylene propylene composite material comprises the following raw materials in parts by mass: 40.3-60.5 parts of fluorinated ethylene propylene resin, 20.2-25.4 parts of glass powder, 15.6-18.4 parts of synthetic mica particles and 4.7-6.4 parts of organic modified montmorillonite;
the ceramic fluorinated ethylene propylene composite material is prepared by the following steps:
drying the glass powder, the synthetic mica particles and the organic modified montmorillonite in a vacuum oven at 60 ℃ for 9 hours, mixing the dried glass powder, the synthetic mica particles and the organic modified montmorillonite with the fluorinated ethylene propylene resin, adding the mixture into a double-screw extruder, extruding and granulating the mixture at 320 ℃, calcining the mixture at 750 ℃ in a muffle furnace, cooling the calcined mixture at room temperature, and processing the calcined mixture into a complete set.
Further, the organically modified montmorillonite is prepared by modifying montmorillonite with tetradecyl trimethyl ammonium bromide, and the specific steps are as follows:
1) weighing 40-50g of montmorillonite, dispersing in deionized water with the mass 20 times of the montmorillonite, pouring into a tissue mashing and homogenizing machine, stirring at high speed for 30min, transferring into a reagent bottle, standing for 4-6h, sucking supernatant, filling into the reagent bottle for later use, shaking the supernatant uniformly, and adding 1mol/L of Na with the volume 0.2-0.3 times of that of the supernatant2CO3Mixing and stirring the solution for 30min, standing overnight to obtain slurry A, and performing suction filtration, drying and grinding on the slurry A to obtain powder B for later use;
2) dispersing 30-40g of powder B in absolute ethyl alcohol with the mass 5 times of the powder B, ultrasonically dispersing for 30min, then placing the powder B in a water bath at 80 ℃, stirring, dropwise adding 5-8mL of tetradecyl trimethyl ammonium bromide after the absolute ethyl alcohol reflows, continuously reflowing for 3h, stopping heating, cooling the reaction solution to room temperature, carrying out suction filtration, washing with deionized water until AgNO is washed3After Br can not be detected in the solution, drying the solution for 24 hours at 100 ℃ under vacuum, grinding and sieving the solution until the particle size is 74-79 mu m, and obtaining the organic modified montmorillonite.
Furthermore, the shielding layer is made of a copper strip, a copper wire is placed on the inner side of the shielding layer, the diameter of the copper wire is 0.52mm, and the copper wire is used as a drainage wire.
The invention has the beneficial effects that:
(1) according to the technical scheme, in the process of high-temperature calcination in a muffle furnace, glass powder with a low melting point is melted in a system and is tightly combined with synthetic mica particles with a high melting point to form an eutectic mixture at high temperature, organic montmorillonite is added to serve as a skeleton of the ceramic, the viscosity of a reaction system can be increased, so that the deformation of the eutectic mixture at high temperature is prevented, the eutectic mixture forms ceramic with a regular shape at low temperature, and the ceramizable perfluoroethylene propylene composite material is formed after cooling.
(2) The synthetic cloud master batch has low dielectric loss, high volume and surface resistance and excellent insulation resistance, and shows excellent insulation performance after forming ceramic with glass powder, so the ceramic fluorinated ethylene propylene composite material does not lose the electrical insulation performance of the original fluorinated ethylene propylene while realizing higher melting point and mechanical property.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a section structure of a polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a copper conductor; 2. a fluorinated ethylene propylene insulating layer; 3. a polyester tape; 4. a shielding layer; 5. a sheath.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Referring to fig. 1, the invention is a polyfluorinated ethylene propylene insulating copper strip shielding high temperature resistant control cable, comprising thirty-seven copper conductors 1, thirty-seven copper conductors 1 are distributed with a central core, eighteen cores at the outermost layer and six cores and twelve cores at the middle part respectively, a polyfluorinated ethylene propylene insulating layer 2 is fixedly extruded and coated on the outer wall of the copper conductor 1, a polyester strip 3 is fixedly extruded and coated on the outer wall of the polyfluorinated ethylene propylene insulating layer 2, a shielding layer 4 is fixedly extruded and coated on the outer wall of the polyester strip 3, and a sheath 5 is fixedly extruded and coated on the outer side of the shielding layer 4; the sheath 5 is made of a ceramifiable polyperfluorinated ethylene propylene composite material.
Example 1
The organic modified montmorillonite in the embodiment is prepared by the following steps:
1) weighing 40g of montmorillonite, dispersing in deionized water 20 times of the mass of montmorillonite, pouring into a tissue mashing and homogenizing machine, stirring at high speed for 30min, transferring into a reagent bottle, standing for 4h, sucking supernatant, filling into the reagent bottle for later use, shaking the supernatant uniformly, and adding 1mol/L Na 0.2 times of the volume of the supernatant2CO3Mixing and stirring the solution for 30min, standing overnight to obtain slurry A, and performing suction filtration, drying and grinding on the slurry A to obtain powder B for later use;
2) dispersing 30g of powder B in absolute ethyl alcohol with the mass 5 times of the powder B, ultrasonically dispersing for 30min, then placing the powder B in a water bath at 80 ℃, stirring, dropwise adding 5mL of tetradecyl trimethyl ammonium bromide after the absolute ethyl alcohol reflows, continuously reflowing for 3h, stopping heating, cooling the reaction solution to room temperature, performing suction filtration, and washing with deionized water until AgNO is obtained3After Br can not be detected in the solution, the solution is dried for 24 hours under vacuum at 100 ℃, and is ground and sieved until the particle size is 74 mu m, so that the organic modified montmorillonite is obtained.
Example 2
The organic modified montmorillonite in the embodiment is prepared by the following steps:
1) 50g of montmorillonite is weighed and dispersed in deionized water with the mass of 20 times of the montmorillonitePouring into a tissue mashing and homogenizing machine, stirring at high speed for 30min, and transferring into a reagent bottle; standing the slurry for 6h, sucking supernatant liquid, and filling into a reagent bottle for later use; shaking the supernatant, and adding 1mol/L Na dropwise with the volume 0.3 times of that of the supernatant2CO3Mixing and stirring the solution for 30min, standing overnight to obtain slurry A, and performing suction filtration, drying and grinding on the slurry A to obtain powder B for later use;
2) dispersing 40g of powder B in absolute ethyl alcohol with the mass 5 times of the powder B, ultrasonically dispersing for 30min, then placing the powder B in a water bath at the temperature of 80 ℃, stirring, dropwise adding 8mL of tetradecyl trimethyl ammonium bromide after the absolute ethyl alcohol reflows, continuously reflowing for 3h, stopping heating, cooling the reaction solution to room temperature, performing suction filtration, washing with deionized water until AgNO is obtained3After Br can not be detected in the solution, the solution is dried for 24 hours under vacuum at 100 ℃, and is ground and sieved to reach the particle size of 79 mu m, so as to obtain the organic modified montmorillonite.
Example 3
In the embodiment, the ceramizable fluorinated ethylene propylene composite material comprises the following raw materials in parts by mass: 40.3 parts of fluorinated ethylene propylene resin, 20.2 parts of glass powder, 15.6 parts of synthetic mica particles and 4.7 parts of the organic modified montmorillonite prepared in the example 1;
the ceramic fluorinated ethylene propylene composite material is prepared by the following steps:
drying the glass powder, the synthetic mica particles and the organic modified montmorillonite in a vacuum oven at 60 ℃ for 9 hours, mixing the dried glass powder, the synthetic mica particles and the organic modified montmorillonite with the fluorinated ethylene propylene resin, adding the mixture into a double-screw extruder, extruding and granulating the mixture at 320 ℃, calcining the mixture at 750 ℃ in a muffle furnace, cooling the calcined mixture at room temperature, and processing the calcined mixture into a complete set.
Example 4
In the embodiment, the ceramizable fluorinated ethylene propylene composite material comprises the following raw materials in parts by mass: 60.5 parts of fluorinated ethylene propylene resin, 25.4 parts of glass powder, 18.4 parts of synthetic mica particles and 6.4 parts of organic modified montmorillonite;
the preparation process is synchronous with example 3.
Comparative example 1
In the comparative example, the ceramizable fluorinated ethylene propylene composite material comprises the following raw materials in parts by mass: 40.3 parts of fluorinated ethylene propylene resin, 20.2 parts of glass powder, 15.6 parts of synthetic mica particles and 4.7 parts of unmodified montmorillonite;
comparative example 2
In this comparative example, a commercially available general fluorinated ethylene propylene material was used for the sheath 5.
Now, the sheaths 5 prepared in examples 3 to 4 and comparative examples 1 to 2 were subjected to the performance test, and the test results are shown in table 1 below.
The jacket 5 was tested for tensile properties according to GB/T1040.3-2006 at 20mmmin at room temperature-1Tensile testing was done on a universal testing machine (CMT2000, SANS). The specimens used for the tensile test were all dumbbells of 50X 4X 1mm, and the length of the cross section of the case was 20 mm. All data are averages of five tensile strengths.
The insulation properties of the jacket 5 were measured using Megger (ZC 36).
The thermal expansion coefficient of the sheath 5 was tested using a horizontal two-rod dilatometer (model DIL402, NETZSCH, germany) and the experiment was carried out with a heating rate of 10 ℃/min.
TABLE 1
As can be seen from table 1 above, the sheaths 5 prepared in examples 3 to 4 of the present invention have good mechanical properties, more excellent electrical insulation properties and higher thermal expansion coefficient than those of comparative examples 1 to 2, so that the sheaths 5 prepared in the present invention have better flame retardancy and insulation properties than the conventional sheath 5 of polyperfluorinated ethylene propylene when used in cables.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (6)
1. The utility model provides a high temperature resistant control cable of insulating copper strips shielding of fluorinated ethylene propylene which characterized in that: the cable comprises a plurality of copper conductors (1), wherein a perfluorinated ethylene propylene insulating layer (2) is fixedly extruded and coated on the outer wall of each copper conductor (1), a polyester belt (3) is fixedly extruded and coated on the outer wall of each perfluorinated ethylene propylene insulating layer (2), a shielding layer (4) is fixedly extruded and coated on the outer wall of each polyester belt (3), and a sheath (5) is fixedly extruded and coated on the outer side of each shielding layer (4); the sheath (5) is made of a ceramifiable polyperfluorinated ethylene propylene composite material.
2. The polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable as claimed in claim 1, wherein: the ceramizable fluorinated ethylene propylene composite material comprises the following raw materials in parts by mass: 40.3-60.5 parts of fluorinated ethylene propylene resin, 20.2-25.4 parts of glass powder, 15.6-18.4 parts of synthetic mica particles and 4.7-6.4 parts of organic modified montmorillonite;
the ceramizable polyperfluorinated ethylene propylene composite material is prepared by the following steps:
drying the glass powder, the synthetic mica particles and the organic modified montmorillonite in a vacuum oven at 60 ℃, mixing the dried glass powder, the synthetic mica particles and the organic modified montmorillonite with the fluorinated ethylene propylene resin, adding the mixture into a double-screw extruder for extrusion granulation, calcining the mixture at high temperature in a muffle furnace, cooling the mixture at room temperature, and processing the mixture into a complete set.
3. The polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable as claimed in claim 2, wherein: the organic modified montmorillonite is prepared by modifying montmorillonite with tetradecyl trimethyl ammonium bromide.
4. The polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable as claimed in claim 2, wherein: the extrusion temperature is 320 ℃ and the high-temperature calcination temperature is 750 ℃.
5. The polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable as claimed in claim 2, wherein: the drying time of the raw materials in the vacuum oven is 9 h.
6. The polyperfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable as claimed in claim 1, wherein: the shielding layer (4) is made of a copper strip, and a copper wire is placed on the inner side of the shielding layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095870.6A CN114388187A (en) | 2022-01-26 | 2022-01-26 | Polyfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210095870.6A CN114388187A (en) | 2022-01-26 | 2022-01-26 | Polyfluorinated ethylene propylene insulating copper strip shielding high-temperature-resistant control cable |
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| CN114388187A true CN114388187A (en) | 2022-04-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201607966U (en) * | 2010-03-10 | 2010-10-13 | 安徽宏源特种电缆集团有限公司 | Anticorrosion temperature-resistant cable for magnesium thermal resistance |
| CN104098899A (en) * | 2014-07-08 | 2014-10-15 | 安徽宁国市高新管业有限公司 | Corrosion-resistant inflaming retarding heat-proof cable sheath material |
| WO2015100764A1 (en) * | 2013-12-31 | 2015-07-09 | 深圳市联嘉祥科技股份有限公司 | Wear-resistant pressure-proof cable and manufacturing method therefor |
| CN106398052A (en) * | 2016-11-02 | 2017-02-15 | 华北科技学院 | Quaternary ammonium salt modified montmorillonite composite PVC (polyvinyl chloride) flame retardant, flame retardant material and their preparation methods |
-
2022
- 2022-01-26 CN CN202210095870.6A patent/CN114388187A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201607966U (en) * | 2010-03-10 | 2010-10-13 | 安徽宏源特种电缆集团有限公司 | Anticorrosion temperature-resistant cable for magnesium thermal resistance |
| WO2015100764A1 (en) * | 2013-12-31 | 2015-07-09 | 深圳市联嘉祥科技股份有限公司 | Wear-resistant pressure-proof cable and manufacturing method therefor |
| CN104098899A (en) * | 2014-07-08 | 2014-10-15 | 安徽宁国市高新管业有限公司 | Corrosion-resistant inflaming retarding heat-proof cable sheath material |
| CN106398052A (en) * | 2016-11-02 | 2017-02-15 | 华北科技学院 | Quaternary ammonium salt modified montmorillonite composite PVC (polyvinyl chloride) flame retardant, flame retardant material and their preparation methods |
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