CN115274196B - Long-life multi-inner-core double-carbon power cable and manufacturing method thereof - Google Patents
Long-life multi-inner-core double-carbon power cable and manufacturing method thereof Download PDFInfo
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- CN115274196B CN115274196B CN202211170360.7A CN202211170360A CN115274196B CN 115274196 B CN115274196 B CN 115274196B CN 202211170360 A CN202211170360 A CN 202211170360A CN 115274196 B CN115274196 B CN 115274196B
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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
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
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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
- H01B7/02—Disposition of insulation
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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- 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
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a long-life multi-inner-core double-carbon power cable and a manufacturing method thereof, and relates to the technical field of cables. The novel conductive cable comprises a plurality of conductors, wherein wrapping layers are arranged outside the conductors and used for fixing the conductors, and shaping layers are arranged on the peripheral sides of the wrapping layers. According to the invention, the wrapping layer is arranged outside the conductor, so that the overall diameter of the conductor is increased, the possibility of bending the conductor is reduced, the plastic layer is arranged outside the wrapping layer, when the cable is bent, the plastic layer enables the cable to keep a deformation state, after external force is removed, the possibility of continuous swinging of the cable is reduced, the protective layer is positioned on the outer layer to protect the inside, the protective layer is connected with the plastic layer through the filling layer, so that the plastic layer is more stably connected with the protective layer, the possibility of large-amplitude swinging of the cable under external force when the cable is loosened at the fixing position of the power cable is reduced, and the possibility of damage of the surface of the protective layer is reduced.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a long-service-life multi-inner-core double-carbon power cable and a manufacturing method thereof.
Background
The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater, the proportion of the cable in the power line is gradually increased, the power cable is a cable product used for transmitting and distributing high-power electric energy in a trunk line of a power system, and comprises various voltage grades of 1-500KV and above and various insulated power cables.
When the existing double-carbon power cable is used, in order to transmit power, during installation, the limitation of various terrains is required to be overcome, the power cable is bent, the bent part is fixed through a fixing piece, when the fixing piece at the bent part is loosened and the cable swings under external force, the fixing part is loosened, the cable cannot be quickly limited, the cable swings for multiple times along the bent part, the surface of the bent part of the cable is damaged over time, and the service life of the cable is seriously influenced.
Disclosure of Invention
The invention aims to: in order to solve the problem that the external surface of the existing double-carbon power cable is easy to peel off under the influence of external force when the fixed part of the existing double-carbon power cable is loosened, the invention provides a long-service-life multi-inner-core double-carbon power cable and a manufacturing method thereof.
The invention specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a two carbon power cable of many inner cores of high life, includes a plurality of conductors, the conductor outside is equipped with the parcel layer, the parcel layer is used for fixing the conductor, parcel layer periphery side is equipped with the shaping layer, works as when the shaping layer receives external force, takes place deformation and maintains deformation along the direction of external force, still includes the protective layer, the protective layer is located the periphery side of shaping layer, the shaping layer with be provided with the filling layer between the protective layer, wherein:
the wrapping layer at least comprises the following components in parts by weight: isoprene rubber: 40-43 parts of rare earth: 0.5-1 part of a softener, 10-30 parts of a softener, and a vulcanizing agent: 0.1-0.3 part, accelerator: 3-5 parts of rare earth for preventing free radicals in the isoprene rubber from contacting with oxygen;
the shaping layer comprises a cylindrical iron strip and the following components in parts by weight: 20-24 parts of isoprene rubber, and thermal adhesive: 13-17 parts;
the filling layer at least comprises the following components in parts by weight: 42-45 parts of fluorosilicone rubber, a toughening agent: 10-13 parts of reinforcing agent: 5-7 parts of a toughening agent for enabling molecular chains of the fluorosilicone rubber to form a net structure, and a reinforcing agent for adsorbing the fluorosilicone rubber;
the protective layer at least comprises the following components in parts by weight: styrene-butadiene rubber: 41-44 parts of an anti-aging agent: 12-15 parts of reinforcing agent: 7-10 parts of age resister used for being attached to a chemical bond of the styrene butadiene rubber.
Further, the softener in the coating component is aromatic hydrocarbon oil, the vulcanizing agent is sulfur, and the accelerator is N-tert-butyl-2-benzothiazole, wherein the weight parts of the isoprene rubber are 40 parts, the weight parts of the rare earth are 0.8 part, the weight parts of the softener are 22 parts, the weight parts of the vulcanizing agent are 0.3 part, and the weight parts of the accelerator are 5 parts.
Further, the thermal adhesive in the molding layer component is polystyrene, wherein the weight part of the isoprene rubber is 20 parts, and the weight part of the thermal adhesive is 15 parts.
Further, the toughening agent in the filling layer component is liquid polybutadiene rubber, and the reinforcing agent is carbon black, wherein the weight part of the fluorosilicone rubber is 44 parts, the weight part of the toughening agent is 10 parts, and the weight part of the reinforcing agent is 6 parts.
Further, the anti-aging agent in the protective layer is diphenylamine, and the reinforcing agent is white carbon black, wherein the styrene butadiene rubber is 44 parts by weight, the anti-aging agent is 13 parts by weight, and the reinforcing agent is 8 parts by weight.
Furthermore, a plurality of through holes are formed in the cylindrical iron bar, so that the total weight of the cylindrical iron bar is less than or equal to one half of the total weight of the shaping layer.
The invention also comprises a manufacturing method of the long-life multi-inner-core double-carbon power cable, which comprises the following steps:
s1, manufacturing an aluminum alloy into a conductor;
s2, proportioning the materials of the wrapping layer according to parts by weight, putting the melted materials into a mold, and connecting the conductor with the wrapping layer after demolding;
s3, punching the iron strip, and curling the punched iron strip into a cylinder;
s4, proportioning the materials of the plastic layer according to parts by weight, melting the materials to form a first prepolymer, pouring the first prepolymer outside the cylindrical iron strip, and connecting the plastic layer with the wrapping layer in a hot melting mode;
s5, proportioning the materials of the protective layer according to the parts by weight, and pouring the materials into a mold to form the protective layer after the materials are molten;
s6, proportioning the materials of the filling layer according to the weight parts to form a second prepolymer, and pouring the second prepolymer between the protective layer and the shaping layer to form the filling layer.
Further, in both step S2 and step S5, the mold can be released after being refrigerated for more than 12 hours.
Further, in step S6, when the second prepolymer is poured, a plate body is covered on the end surface of the shaping layer.
The invention has the following beneficial effects:
1. according to the invention, the wrapping layer is arranged outside the conductor, so that the overall diameter of the conductor is increased, the possibility of bending the conductor is reduced, the plastic layer is arranged outside the wrapping layer, when the cable is bent, the plastic layer enables the cable to keep a deformation state, after external force is removed, the possibility of continuous swinging of the cable is reduced, the protective layer is positioned on the outer layer to protect the inside, the protective layer is connected with the plastic layer through the filling layer, so that the plastic layer is more stably connected with the protective layer, the possibility of large-amplitude swinging of the cable under external force when the cable is loosened at the fixing position of the power cable is reduced, and the possibility of damage of the surface of the protective layer is reduced.
2. The wrapping layer is made of isoprene rubber, the isoprene rubber has good elasticity, the possibility of hard conflict with a conductor when the cable deforms is reduced, and the isoprene rubber has good insulation and reduces the possibility of electric leakage when electric power is transmitted.
3. According to the invention, the shaping layer is used as a layer base through the cylindrical iron sheet, the shape of the cable is easy to fix when an external force is applied, and the shaping layer and the wrapping layer are convenient to connect through the isoprene rubber which is the same as the material of the wrapping layer.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a schematic perspective view of a high life multi-core dual carbon power cable according to the present invention;
FIG. 3 is an exploded view of a portion of the structure of the present invention;
reference numerals: 1. a conductor; 2. a wrapping layer; 3. a shaping layer; 4. a protective layer; 5. and (5) filling the layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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.
As shown in fig. 2 and 3, a two carbon power cable of many inner cores of high life, including a plurality of conductors 1, conductor 1 outside is equipped with parcel 2, parcel 2 is used for fixing conductor 1, parcel 2 periphery side is equipped with the shaping layer 3, works as when shaping layer 3 received external force, takes place deformation and maintains this deformation along the direction of external force, still includes protective layer 4, protective layer 4 is located the periphery side of shaping layer 3, shaping layer 3 with be provided with filling layer 5 between protective layer 4, through being provided with one deck parcel 2 at conductor 1 periphery side, has increaseed the diameter of conductor 1, makes it when receiving external force, takes place the possibility of buckling and reduces, in two carbon composite power cable, has a plurality of conductors 1 and parcel 2, all is provided with shaping layer 3 outside every parcel 2, when the external force that receives is too big, when making the cable take place deformation, keeps deformation through shaping layer 3, has reduced after external force removes, because the possibility of continuing swing of inertia has reduced the damage to 4 epidermis, through 4 protection layers, has reduced the damage to conductor and has further reduced the protection between the protection layer 3 and the protection layer 3, wherein has reduced the relative damage of shaping layer 3, has further reduced the protection layer 3 and has reduced the protection layer 3 that the cable is damaged in that the protection layer that the external force is received between the relative protection layer, and has reduced the protection layer 3, has reduced the protection layer that it is damaged in that it is more than the relative protection layer that the relative damage is being damaged in that:
the wrapping layer 2 at least comprises the following components in parts by weight: isoprene rubber: 40-43 parts of rare earth: 0.5-1 part of a softener, 10-30 parts of a softener, and a vulcanizing agent: 0.1-0.3 part, accelerator: 3-5 parts of rare earth, wherein the rare earth is used for preventing free radicals in the isoprene rubber from contacting oxygen, the rare earth is used as a heat-resistant agent in the raw material of the wrapping layer 2, when the isoprene rubber is used, the rare earth has an oxidation-reduction effect, free radical reaction generated by oxidation in the isoprene rubber can be prevented within a certain temperature range, meanwhile, the rare earth metal compound can absorb some trace acid or alkaline substances capable of catalyzing and degrading reaction in the isoprene rubber, so that the isoprene rubber has a heat stabilizing effect, when the isoprene rubber is used, when the conductor 1 transmits electric power, heat can be generated inevitably, the influence of the heat on the conductor 1 on the wrapping layer 2 is reduced by adding the rare earth, and the isoprene rubber has a relatively long and thin molecular chain and more chain links on the molecular chain, the flexibility among molecular chains is good, so that the isoprene rubber has good elasticity in rubber, when the composite cable is used and deformed, the wrapping layer 2 is convenient to deform together with the conductor 1, the possibility of hard conflict between the wrapping layer 2 and the conductor 1 is reduced, and the damage to the conductor 1 is reduced;
the plastic layer 3 comprises a cylindrical iron strip and the following components in parts by weight: 20-24 parts of isoprene rubber, and a thermal adhesive: 13-17 parts of a cylindrical iron strip, wherein the deformation of the whole cable is maintained through the deformation of the cylindrical iron strip when the cable is used, the cable is kept in a deformed state after the cable is deformed by external force, when the external force is removed, the possibility of swinging of the composite cable is reduced, the abrasion to the outer surface of the protective layer 4 is reduced, isoprene rubber and cylindrical iron sheets are connected through a thermal adhesive, and the isoprene rubber are mutually connected so as to be convenient for the mutual connection between the shaping layer 3 and the wrapping layer 2;
the filling layer 5 at least comprises the following components in parts by weight: 42-45 parts of fluorosilicone rubber, a toughening agent: 10-13 parts of reinforcing agent: 5-7 parts of a toughening agent, wherein the toughening agent is used for enabling a molecular chain of the fluorosilicone rubber to form a net-shaped structure, the reinforcing agent is used for adsorbing the fluorosilicone rubber, the fluorosilicone rubber has elasticity similar to that of silicon rubber, when the protective layer 4 and the shaping layer 3 are connected, the flexible connection is adopted, the influence of external force on the conductor 1 when the external force is applied is reduced, the brittleness of the fluorosilicone rubber is reduced through the toughening agent, the bearing strength of the fluorosilicone rubber is increased, the toughness is increased, the strength of the filling layer 5 is increased through the adsorption effect of the reinforcing agent on fluorosilicone rubber molecules, the occupation ratio of the filling layer 5 in the whole double-carbon composite power cable is maximum, when the filling layer 5 is high in toughness and high in strength, the whole double-carbon composite power cable is not easy to bend, and the possibility of damage to the outer skin of the protective layer 4 is reduced;
the protective layer 4 at least comprises the following components in parts by weight: styrene-butadiene rubber: 41-44 parts of an anti-aging agent: 12-15 parts of reinforcing agent: 7-10 parts of an anti-aging agent, wherein the anti-aging agent is attached to a chemical bond of the styrene-butadiene rubber, the styrene-butadiene rubber has a large number of phenyl side groups on a molecular chain, so that the intermolecular acting force is large, the styrene-butadiene rubber is more wear-resistant compared with natural rubber, and the anti-aging agent plays a role in protecting the dual-carbon composite power cable by virtue of the characteristic of better wear resistance, is used for reducing the contact between molecules of the styrene-butadiene rubber and oxygen, reducing the oxidation of the oxygen on the styrene-butadiene rubber, increasing the strength of the styrene-butadiene rubber by virtue of a reinforcing agent, and prolonging the service life of the protective layer 4 and improving the protection effect on the conductor 1;
compared with the prior art, when the double-carbon composite power cable is used, when the filling layer 5 is bent due to external force, the damage of the external surface of the double-carbon composite power cable due to the external force is small, when the double-carbon composite power cable is deformed due to the external force, the state of the deformed plastic layer 3 is kept, the possibility that the double-carbon composite power cable swings at the bent part after the external force is removed is reduced, the damage to the external surface of the protective layer 4 is reduced, and the service life of the double-carbon composite power cable is prolonged.
As shown in fig. 2 and 3, in some embodiments, the softening agent in the composition of the coating layer 2 is aromatic hydrocarbon oil, the vulcanizing agent is sulfur, and the accelerator is N-tert-butyl-2-benzothiazole, wherein 40 parts by weight of the isoprene rubber, 0.8 part by weight of the rare earth, 22 parts by weight of the softening agent, 0.3 part by weight of the vulcanizing agent, and 5 parts by weight of the accelerator, the strength and toughness of the isoprene rubber are improved by sulfur as the vulcanizing agent through a vulcanization crosslinking bond in a sulfur vulcanization reaction, the strength and toughness of the isoprene rubber are improved by N-tert-butyl-2-benzothiazole as the accelerator and N-tert-butyl-2-benzothiazole as a standard accelerator, and the speed of the vulcanization reaction is increased, and the toxicity of N-tert-butyl-2-benzothiazole is low, so that damage to workers is reduced, the softening agent is selected, and the aromatic hydrocarbon oil is used to increase the molecular gap of the isoprene rubber by entering molecules of the aromatic hydrocarbon oil into the isoprene rubber molecules to make the molecular gap of the isoprene rubber more easily perform the softening reaction, so that the coating layer 2 has the following properties:
tensile strength is more than or equal to 29.4MPa;
tear strength of 61.3 KN m or more -1 ；
Rebound value was 53%;
the permanent set was 1.6%.
As shown in fig. 2 and fig. 3, in some embodiments, the thermal adhesive in the components of the shaping layer 3 is polystyrene, wherein the weight part of the isoprene rubber is 20 parts, and the weight part of the thermal adhesive is 15 parts, polystyrene has a good thermal insulation function, and when the polystyrene is used as the thermal adhesive, the polystyrene reduces the possibility of adhesion reduction caused by heat generated when the conductor 1 transmits power, wherein the performance of the shaping layer 3 when not connected with the cylindrical iron sheet is as follows:
the thermal conductivity coefficient is 0.08W/(mK);
tensile strength is more than or equal to 57MPa;
the elongation length is 4%;
the rebound value is 42%;
the permanent set was 2%.
As shown in fig. 2 and fig. 3, in some embodiments, the toughening agent in the components of the filling layer 5 is liquid polybutadiene rubber, the reinforcing agent is carbon black, wherein the parts by weight of the fluorosilicone rubber are 44 parts, the part by weight of the toughening agent is 10 parts, the parts by weight of the reinforcing agent is 6 parts, the toughening agent is liquid polybutadiene rubber, macromolecules in the liquid polybutadiene rubber are connected with molecular chains in the fluorosilicone rubber, so that the acting force between molecules of the fluorosilicone rubber is enhanced, and most of the macromolecules in the liquid polybutadiene rubber are rubber macromolecules, so that the macromolecules are convenient to be connected with the fluorosilicone rubber, after the reaction, the molecular chains of the fluorosilicone rubber form a three-dimensional network by linearity, so that the flexibility of the film layer is increased, the brittleness is reduced, the toughness is increased, the particles of the carbon black are fine, the network chains are tightly stacked, the internal area is larger than the surface area, and the particles are more in unit mass, so that a chain-type conductive structure is favorably formed in the fluorosilicone rubber, so that the connection between molecules of the fluorosilicone rubber is tighter, wherein the performance of the filling layer 5 is as follows:
tear strength of 46.2 KN m or more -1 ；
Tensile strength is more than or equal to 37MPa;
the permanent deformation rate is less than 20 percent.
As shown in fig. 2 and 3, in some embodiments, the anti-aging agent in the protective layer 4 is diphenylamine, the reinforcing agent is white carbon black, wherein 44 parts by weight of the styrene-butadiene rubber, 13 parts by weight of the anti-aging agent, 8 parts by weight of the reinforcing agent, and white carbon black is white powder, and when the reinforcing agent is fused with the styrene-butadiene rubber, the surface of the protective layer 4 is dyed to make the color lighter, so that the heat absorption speed is reduced, the influence of temperature on the protective layer 4 is reduced, and when diphenylamine is used as the anti-aging agent, the reinforcing agent is white powder crystal, the influence on the color after the reaction is smaller, and when the protective layer is used, the possibility of the reaction of styrene-butadiene rubber molecules with oxygen is reduced by the reaction of macromolecular radicals in diphenylamine with oxygen, and the service life of the protective layer 4 is increased, wherein the protective layer 4 has the following properties:
tensile strength of 270kgf/cm 2 ；
The tensile strength is 50MPa;
hardness was 84HSD.
As shown in fig. 2 and 3, in some embodiments, the cylindrical iron bar is configured with a plurality of through holes, so that the total weight of the cylindrical iron bar is less than or equal to one half of the total weight of the plastic layer 3, the overall weight of the cylindrical iron sheet is reduced through the through holes, when the dual-carbon power cable is used, the weight of the entire dual-carbon power cable is light, the deformation of the cylindrical iron sheet is facilitated, and the practicability of the dual-carbon power cable is improved.
As shown in fig. 1, the present invention also includes a method of making a long-life multi-core dual-carbon power cable, comprising, in some embodiments, the steps of:
s1, making aluminum alloy into a conductor, wherein the aluminum alloy is adopted as the conductor due to the fact that sulfur has certain corrosivity to copper, and can conduct electricity and reduce the possibility of being corroded when in use;
s2, proportioning materials of the wrapping layer according to parts by weight, placing the melted materials into a mold, connecting the conductor and the wrapping layer after demolding, when the material is used, proportioning the raw materials according to parts by weight, placing the materials into a stirrer, heating isoprene rubber, wherein the heating temperature range is 145-150 ℃, the rotating speed of the stirrer is 200 revolutions per second, when subsequent materials are added, the rotating speed of the stirrer is reduced to 60 revolutions per second, the heating time is 9-10 minutes, after heating is finished, the materials are poured into the mold, and after demolding, the conductor is installed in the wrapping layer;
s3, punching the iron strip, curling the punched iron strip into a cylinder, punching the iron sheet, and curling the iron sheet to facilitate the forming of the iron sheet;
s4, proportioning the materials of the plastic layer according to parts by weight, melting the materials to form a first prepolymer, pouring the first prepolymer outside the cylindrical iron strip, connecting the plastic layer with the wrapping layer in a hot melting mode, putting isoprene rubber into a stirrer, stirring and heating, wherein the heating temperature range is 145-150 ℃, the rotating speed of the stirrer is 200 revolutions per second, and the heating time is 7-8 minutes;
s5, proportioning the materials of the protective layer according to parts by weight, pouring the materials into a mold to form the protective layer after the materials are molten, putting the materials of the protective layer into a stirrer, stirring and heating the materials of the protective layer, firstly heating the styrene butadiene rubber at the temperature of 110-150 ℃, and the rotating speed of the stirrer being 240 revolutions per second, adjusting the rotating speed of the stirrer to reduce the rotating speed to 70 revolutions per second when the styrene butadiene rubber is softened, then adding the subsequent materials, heating for 10-12 minutes, pouring the molten materials into the mold, and preparing the protective layer after demolding;
s6, proportioning the materials of the filling layer according to the weight parts to form a second prepolymer, pouring the second prepolymer between the protective layer and the shaping layer to form the filling layer, putting the fluorosilicone rubber into a stirrer to stir and heat, wherein the heating temperature of the fluorosilicone rubber ranges from 220 ℃ to 245 ℃, the rotating speed of the stirrer is 200 revolutions per second, after the fluorosilicone rubber is softened, reducing the rotating speed of the stirrer to 120 revolutions per second to reduce the temperature of the fluorosilicone rubber to 150 ℃, adding subsequent materials, wherein the subsequent heating time is 8-10 minutes, after heating is finished, waiting for the temperature reduction of the second prepolymer to 100 ℃, during the period, putting the protective layer and the shaping layer in order, fixing the protective layer and the shaping layer through a clamp, pouring the second prepolymer into a gap between the protective layer and the shaping layer, and connecting the protective layer and the shaping layer, so that the filling layer can better connect the protective layer and the shaping layer.
As shown in fig. 1, in some embodiments, in step S2 and step S5, refrigeration is required for more than 12 hours to demould, the mould and the internal material thereof are demoulded after being refrigerated for 12 hours, when the temperature is high, the temperature difference is too large due to thermal expansion and cold contraction when the mould is opened, the finished product may be damaged, and after being refrigerated for 12 hours, the flaws on the finished product are exposed, so that the finished product can be detected conveniently.
As shown in fig. 1, in some embodiments, in step S6, when the second performed polymer is poured, a plate is covered on the end surface of the shaping layer, and in order to reduce the influence on the shaping layer caused by the connection between the second performed polymer and the end of the shaping layer, when the second performed polymer is poured, the baffle is covered on the end of the shaping layer to reduce the possibility of the contact between the second performed polymer and the end of the shaping layer, thereby reducing the influence on the performance of the shaping layer.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a two carbon power cable of many inner cores of high life, a serial communication port, including a plurality of conductors (1), conductor (1) outside is equipped with parcel layer (2), parcel layer (2) are used for fixing conductor (1), parcel layer (2) periphery side is equipped with shaping layer (3), works as shaping layer (3) receive external force, and along the direction of external force take place deformation and maintain deformation, still include protective layer (4), protective layer (4) are located the periphery side of a plurality of shaping layers (3), shaping layer (3) with be provided with filling layer (5) between protective layer (4), wherein:
the wrapping layer (2) at least comprises the following components in parts by weight: isoprene rubber: 40-43 parts of rare earth: 0.5-1 part of softener, 10-30 parts of softener, and vulcanizing agent: 0.1-0.3 part, accelerator: 3-5 parts of rare earth for preventing free radicals in the isoprene rubber from contacting with oxygen;
the shaping layer (3) comprises a cylindrical iron strip and the following components in parts by weight: 20-24 parts of isoprene rubber, and a thermal adhesive: 13-17 parts;
the filling layer (5) at least comprises the following components in parts by weight: 42-45 parts of fluorosilicone rubber, a toughening agent: 10-13 parts of reinforcing agent: 5-7 parts of a toughening agent for enabling molecular chains of the fluorosilicone rubber to form a net structure, and a reinforcing agent for adsorbing the fluorosilicone rubber;
the protective layer (4) at least comprises the following components in parts by weight: styrene-butadiene rubber: 41-44 parts of an anti-aging agent: 12-15 parts of reinforcing agent: 7-10 parts of age resister used for being attached to a chemical bond of the styrene butadiene rubber.
2. The long-life multi-inner-core dual-carbon power cable as claimed in claim 1, wherein the softener in the components of the coating layer (2) is aromatic hydrocarbon oil, the vulcanizing agent is sulfur, and the accelerator is N-tert-butyl-2-benzothiazole, wherein the isoprene rubber is 40 parts by weight, the rare earth is 0.8 part by weight, the softener is 22 parts by weight, the vulcanizing agent is 0.3 part by weight, and the accelerator is 5 parts by weight.
3. The high-life multi-core dual-carbon power cable as claimed in claim 1, wherein the thermal adhesive in the component of the shaping layer (3) is polystyrene, wherein the weight part of the isoprene rubber is 20 parts, and the weight part of the thermal adhesive is 15 parts.
4. The long-life multi-core dual-carbon power cable as claimed in claim 1, wherein the toughening agent in the component of the filling layer (5) is liquid polybutadiene rubber, and the reinforcing agent is carbon black, wherein the fluorosilicone rubber is 44 parts by weight, the toughening agent is 10 parts by weight, and the reinforcing agent is 6 parts by weight.
5. The high-life multi-core dual-carbon power cable as recited in claim 1, wherein the aging inhibitor in the protection layer (4) is diphenylamine, and the reinforcing agent is white carbon black, wherein the styrene butadiene rubber is 44 parts by weight, the aging inhibitor is 13 parts by weight, and the reinforcing agent is 8 parts by weight.
6. A long-life multi-core dual-carbon power cable according to claim 1, wherein the cylindrical iron strip is configured with a plurality of through holes so that the total weight of the cylindrical iron strip is less than or equal to half of the total weight of the plastic layer (3).
7. A manufacturing method of a long-life multi-inner-core double-carbon power cable is characterized by comprising the following steps:
s1, manufacturing an aluminum alloy into a conductor;
s2, proportioning the materials of the wrapping layer according to parts by weight, putting the melted materials into a mold, demolding, and connecting the conductor with the wrapping layer;
s3, punching the iron strip, and curling the punched iron strip into a cylinder;
s4, proportioning the materials of the plastic layer according to parts by weight, melting the materials to form a first prepolymer, pouring the first prepolymer outside the cylindrical iron strip, and connecting the plastic layer with the wrapping layer in a hot melting mode;
s5, proportioning the materials of the protective layer according to the parts by weight, and pouring the materials into a mold to form the protective layer after the materials are molten;
s6, proportioning the materials of the filling layer according to the weight parts to form a second prepolymer, and pouring the second prepolymer between the protective layer and the shaping layer to form the filling layer.
8. The method as claimed in claim 7, wherein the demolding is performed after the step S2 and the step S5 are both performed in a cold storage for more than 12 hours.
9. The manufacturing method of a long-life multi-core dual-carbon power cable as claimed in claim 7, wherein in step S6, a plate body is covered on the end surface of the shaping layer when the second prepolymer is poured.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211170360.7A CN115274196B (en) | 2022-09-26 | 2022-09-26 | Long-life multi-inner-core double-carbon power cable and manufacturing method thereof |
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| CN202211170360.7A CN115274196B (en) | 2022-09-26 | 2022-09-26 | Long-life multi-inner-core double-carbon power cable and manufacturing method thereof |
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| CN115274196B true CN115274196B (en) | 2022-11-29 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000294049A (en) * | 1999-04-06 | 2000-10-20 | Sumitomo Electric Ind Ltd | Rubber or plastic power cable |
| CN107452440A (en) * | 2016-02-25 | 2017-12-08 | 杨攀 | A kind of durable power cable |
| CN107578848A (en) * | 2016-04-26 | 2018-01-12 | 夏立中 | A kind of power cable |
| KR101867168B1 (en) * | 2016-08-18 | 2018-06-12 | 엘에스전선 주식회사 | Power cable |
| CN112599289B (en) * | 2020-12-15 | 2022-11-11 | 广东标顶电子有限公司 | Cable with high wear resistance and ductility and preparation method thereof |
| CN216871619U (en) * | 2022-02-07 | 2022-07-01 | 烟台沪安电缆有限公司 | Cable with anti-abrasion and anti-high-voltage resistant functions |
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