CN116564602A - Insulating flame-retardant type new energy automobile cable and production process thereof - Google Patents
Insulating flame-retardant type new energy automobile cable and production process thereof Download PDFInfo
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- CN116564602A CN116564602A CN202310429098.1A CN202310429098A CN116564602A CN 116564602 A CN116564602 A CN 116564602A CN 202310429098 A CN202310429098 A CN 202310429098A CN 116564602 A CN116564602 A CN 116564602A
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- retardant
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 134
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 128
- 239000011241 protective layer Substances 0.000 claims abstract description 66
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 32
- 238000000576 coating method Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 15
- 229920001971 elastomer Polymers 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- RIIPFHVHLXPMHQ-UHFFFAOYSA-N [4-(dimethylamino)phenyl]boronic acid Chemical compound CN(C)C1=CC=C(B(O)O)C=C1 RIIPFHVHLXPMHQ-UHFFFAOYSA-N 0.000 claims description 10
- 229920013716 polyethylene resin Polymers 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical group [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 8
- -1 2-chloroethyl ester Chemical class 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical group CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 claims description 5
- RYSHIRFTLKZVIH-UHFFFAOYSA-N N,N-diethylcyanoacetamide Chemical compound CCN(CC)C(=O)CC#N RYSHIRFTLKZVIH-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 5
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012796 inorganic flame retardant Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- NPSJHQMIVNJLNN-UHFFFAOYSA-N 2-ethylhexyl 4-nitrobenzoate Chemical compound CCCCC(CC)COC(=O)C1=CC=C([N+]([O-])=O)C=C1 NPSJHQMIVNJLNN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004808 2-ethylhexylester Substances 0.000 claims description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 239000002341 toxic gas Substances 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/18—Cables specially adapted for charging electric vehicles
-
- 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
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
-
- 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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
-
- 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
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses an insulating flame-retardant cable for a new energy automobile and a production process thereof, and relates to the technical field of cables. Including the cable body, the inside interior bearing structure that is provided with of cable body, lead the core groove has been seted up to interior bearing structure's surface, and the inner wall that leads the core groove is provided with cable core, and interior bearing structure's surface parcel is provided with the insulating layer, is provided with interior protective layer between interior bearing structure and the insulating layer, and the surface of interior protective layer is provided with first fire-retardant layer, and the side surface of first fire-retardant layer is provided with the fire-retardant layer of second, and the side surface of the fire-retardant layer of second is provided with the outer protective layer. The invention effectively improves the additive components, adds the catalyst, the curing agent and the flame retardant in the preparation process, improves the flame retardance of the cable, avoids damaging the cable when the cable is used at high temperature, prolongs the service life of the cable, has good technological properties, does not release toxic gas when in combustion, has excellent safety and environmental protection, and has simple process and high production efficiency, and can greatly reduce the processing cost.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to an insulating flame-retardant cable for a new energy automobile and a production process thereof.
Background
With the development of new energy automobiles, cables play an important role in automobiles, and the cables are generally conveying wires for conveying electric energy, electric signals and the like, become an indispensable part of information transmission in the current life, and at present, when the cables are used, a plurality of severe environments exist, and the cables are easy to damage in the severe environments, so that the cables in the severe environments need to be frequently maintained, the cost is extremely high, and particularly in the high-temperature environment, the insulativity, the fire resistance and the high-temperature resistance of the cables are the most basic conditions of the cables, so that the flame retardance of the cables is very important for the current production life.
With the increase of environmental awareness, the use amount of halogen-containing flame-retardant cables is greatly reduced, and the application of low-smoke halogen-free high-temperature flame-retardant cables has become a trend, but the cable is ensured to have excellent flame retardant property while the cable is ensured to have excellent high-temperature resistant flame retardant property so as to prolong the service life of the cable and ensure safety.
Disclosure of Invention
The invention provides an insulating flame-retardant cable for a new energy automobile and a production process thereof, which aim to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a cable for new energy automobile of insulating fire-retardant formula, includes cable body 1, the inside inner support structure 2 that is provided with of cable body 1, guide core groove 21 has been seted up on the surface of inner support structure 2, guide core groove 21's inner wall is provided with cable core 22, inner support structure 2's surface parcel is provided with insulating layer 3, be provided with inner protection layer 4 between inner support structure 1 and the insulating layer 3, inner protection layer 4's surface is provided with first fire-retardant layer 5, first fire-retardant layer 5's side surface is provided with second fire-retardant layer 6, second fire-retardant layer 6's side surface is provided with outer protection layer 7.
Further, the inner support structure 2 and the inner protective layer 4 are both made of a modified rubber material.
Further, the first flame-retardant layer 5 is made of a combination of alkali-free glass filaments and glass fiber belts and is wrapped on the surface of the inner protective layer 4, and the second flame-retardant layer 6 is a halogen-free flame-retardant material processed by adding inorganic flame retardants and phosphorus flame retardants into polyolefin.
Further, the outer protective layer 7 is made of a low smoke zero halogen cross-linked polyolefin material.
A production process of an insulating flame-retardant cable for a new energy automobile comprises the following steps:
s1, preparing a cable core: carrying out concentric double twisting on the required cable to obtain a cable core;
s2, coating an insulating layer: after the cable core is manufactured, an insulating layer is coated on the outer surface of the cable core by using an extruder;
s3, cooling treatment: putting the insulating layer in the step S2 into cooling water for cooling treatment after coating;
s4, coating an inner protective layer: coating an inner protection layer on the outer side of the insulating layer of the cable core coated with the insulating layer in the step S3 through an extruding machine;
s5, coating a flame retardant layer: after the inner protective layer in the step S4 is coated, a flame-retardant layer is coated on the outer surface of the inner protective layer;
s7, coating an outer protective layer: and after the coating of the flame retardant layer in the step S6 is completed, the outer surface is coated with an outer protective layer, so that the preparation of the insulated flame retardant cable is realized.
Further, the raw materials of the insulating layer in the step S2 include the following components in parts by weight: 80-100 parts of high-pressure polyethylene resin, 20-30 parts of N, N-diethyl cyanoacetamide, 8-12 parts of 4-dimethylaminophenylboronic acid, 1-3 parts of catalyst, 2-3 parts of curing agent and 8-10 parts of flame retardant.
Further, the catalyst is tetra (triphenylphosphine) palladium, the curing agent is 2-ethyl-4-methylimidazole, and the flame retardant is one of tributyl phosphate, 2-ethylhexyl ester, 2-chloroethyl ester, 2, 3-dichloropropyl ester or 2, 3-dibromopropyl ester.
Further, the preparation steps of the insulating layer raw materials in the step S2 are as follows: under the protection of nitrogen, heating high-pressure polyethylene resin, N-diethyl cyanoacetamide, 4-dimethylaminophenylboronic acid and a catalyst to 90-100 ℃ under stirring, reacting for 2-3 hours at constant temperature to obtain a mixed product, adding a curing agent and a flame retardant into the obtained mixed product, and continuously stirring for 1-1.5 hours to obtain the insulating layer raw material.
Further, the cooling treatment in the step S3 is performed twice, firstly, the cable core coated by the insulating layer is put into water with the temperature of 50-60 ℃ to be cooled for 3-4min, and then is put into water with the temperature of 4-5min.
Further, the inner protective layer in the step S4 is made of one of polyvinyl chloride material, thermoplastic polyurethane elastomer rubber material and polyurethane material, and the outer protective layer in the step S7 is made of a cross-linked polyethylene base material, a flame retardant and an ultraviolet absorber which are mixed according to a certain proportion. .
Compared with the prior art, the invention provides the cable for the insulated flame-retardant new energy automobile and the production process thereof, and the cable has the following beneficial effects:
1. the invention effectively improves the additive components, adds the catalyst, the curing agent and the flame retardant in the preparation process, improves the flame retardance of the cable, avoids cable damage when the cable is used at high temperature, prolongs the service life of the cable, has good technological properties, has no toxic gas release during combustion, has excellent safety and environmental protection, and has simple process and high production efficiency, and can greatly reduce the processing cost.
2. According to the cable for the insulating flame-retardant new energy automobile and the production process, the first flame-retardant layer and the second flame-retardant layer are arranged, and the flame retardant is filled in the cable, so that the cable has a flame-retardant effect, the adhesive strength of the flame retardant and the cable is improved, the aim of improving the adhesive quantity of the flame retardant is fulfilled, the flame-retardant effect is improved, and the outer protective layer and the inner protective layer are arranged, so that the cable has excellent cracking resistance, mechanical and physical properties and processability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of an insulating layer structure according to the present invention;
FIG. 3 is a schematic view of the structure of the outer protective layer according to the present invention;
FIG. 4 is a flow chart of the present invention.
In the figure: 1. a cable body; 2. an inner support structure; 21. a core guiding groove; 22. a cable core; 3. an insulating layer; 4. an inner protective layer; 5. a first flame retardant layer; 6. a second flame retardant layer; 7. and an outer protective layer.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.
In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Embodiment one: referring to fig. 1-4, the invention discloses an insulating flame-retardant new energy automobile cable, which comprises a cable body 1, wherein an inner supporting structure 2 is arranged in the cable body 1, a core guiding groove 21 is formed in the surface of the inner supporting structure 2, a cable core 22 is arranged on the inner wall of the core guiding groove 21, an insulating layer 3 is wrapped on the surface of the inner supporting structure 2, an inner protective layer 4 is arranged between the inner supporting structure 1 and the insulating layer 3, a first flame-retardant layer 5 is arranged on the surface of the inner protective layer 4, a second flame-retardant layer 6 is arranged on the side surface of the first flame-retardant layer 5, an outer protective layer 7 is arranged on the side surface of the second flame-retardant layer 6, the inner supporting structure 2 and the inner protective layer 4 are both made of modified rubber materials, the first flame-retardant layer 5 is made of alkali-free glass filaments and glass fiber belts, the surface of the inner protective layer 4 is wrapped by polyolefin, the second flame-retardant layer 6 is halogen-free flame-retardant material processed by adding inorganic flame retardants and phosphorus flame retardants, and the outer protective layer 7 is made of low-smoke halogen-free cross-linked polyolefin material.
A production process of an insulating flame-retardant cable for a new energy automobile comprises the following steps:
s1, preparing a cable core: carrying out concentric double twisting on the required cable to obtain a cable core;
s2, coating an insulating layer: after the cable core is manufactured, an insulating layer is coated on the outer surface of the cable core by using an extruder, and the insulating layer comprises the following raw materials in parts by weight: 90 parts of high-pressure polyethylene resin, 25 parts of N, N-diethyl cyanoacetamide, 10 parts of 4-dimethylaminophenylboronic acid, 2 parts of a catalyst, 2 parts of a curing agent and 10 parts of a flame retardant, wherein the catalyst is tetrakis (triphenylphosphine) palladium, the curing agent is 2-ethyl-4-methylimidazole, the flame retardant is 2-chloroethyl ester, and the preparation steps of the insulating layer raw materials are as follows: heating high-pressure polyethylene resin, N-diethyl cyanoacetamide, 4-dimethylaminophenylboronic acid and a catalyst to 100 ℃ under the protection of nitrogen, reacting at constant temperature for 3 hours to obtain a mixed product, adding a curing agent and a flame retardant into the obtained mixed product, and continuously stirring for 1.5 hours to obtain an insulating layer raw material;
s3, cooling treatment: the insulating layer coating in the step S2 is put into cooling water for cooling treatment, the cooling treatment is divided into two times, firstly, the cable core coated by the insulating layer is put into water with the temperature of 50 ℃ for cooling for 3min, and then the cable core is put into water for cooling for 4min;
s4, coating an inner protective layer: coating an inner protection layer on the outer side of the insulating layer of the cable core coated with the insulating layer in the step S3 through an extruding machine again, wherein the inner protection layer is made of polyvinyl chloride materials;
s5, coating a flame retardant layer: after the inner protective layer in the step S4 is coated, a flame-retardant layer is coated on the outer surface of the inner protective layer;
s7, coating an outer protective layer: and after the flame retardant layer in the step S6 is coated, the outer surface is coated with an outer protective layer, so that the preparation of the insulated flame retardant cable is realized, and the outer protective layer is prepared by mixing a crosslinked polyethylene base material, a flame retardant and an ultraviolet absorbent according to a certain proportion.
Embodiment two: referring to fig. 1-4, the invention discloses an insulating flame-retardant new energy automobile cable, which comprises a cable body 1, wherein an inner supporting structure 2 is arranged in the cable body 1, a core guiding groove 21 is formed in the surface of the inner supporting structure 2, a cable core 22 is arranged on the inner wall of the core guiding groove 21, an insulating layer 3 is wrapped on the surface of the inner supporting structure 2, an inner protective layer 4 is arranged between the inner supporting structure 1 and the insulating layer 3, a first flame-retardant layer 5 is arranged on the surface of the inner protective layer 4, a second flame-retardant layer 6 is arranged on the side surface of the first flame-retardant layer 5, an outer protective layer 7 is arranged on the side surface of the second flame-retardant layer 6, the inner supporting structure 2 and the inner protective layer 4 are both made of modified rubber materials, the first flame-retardant layer 5 is made of alkali-free glass filaments and glass fiber belts, the surface of the inner protective layer 4 is wrapped by polyolefin, the second flame-retardant layer 6 is halogen-free flame-retardant material processed by adding inorganic flame retardants and phosphorus flame retardants, and the outer protective layer 7 is made of low-smoke halogen-free cross-linked polyolefin material.
A production process of an insulating flame-retardant cable for a new energy automobile comprises the following steps:
s1, preparing a cable core: carrying out concentric double twisting on the required cable to obtain a cable core;
s2, coating an insulating layer: after the cable core is manufactured, an insulating layer is coated on the outer surface of the cable core by using an extruder, and the insulating layer comprises the following raw materials in parts by weight: 85 parts of high-pressure polyethylene resin, 25 parts of N, N-diethyl cyanoacetamide, 10 parts of 4-dimethylaminophenylboronic acid, 1 part of a catalyst, 3 parts of a curing agent and 8-10 parts of a flame retardant, wherein the catalyst is tetrakis (triphenylphosphine) palladium, the curing agent is 2-ethyl-4-methylimidazole, the flame retardant is 2-ethylhexyl ester, and the preparation steps of the insulating layer raw materials are as follows: heating high-pressure polyethylene resin, N-diethyl cyanoacetamide, 4-dimethylaminophenylboronic acid and a catalyst to 95 ℃ under the protection of nitrogen, reacting at constant temperature for 3 hours to obtain a mixed product, adding a curing agent and a flame retardant into the obtained mixed product, and continuously stirring for 1-1.5 hours to obtain an insulating layer raw material;
s3, cooling treatment: the insulating layer coating in the step S2 is put into cooling water for cooling treatment, the cooling treatment is divided into two times, firstly, the cable core coated by the insulating layer is put into water with the temperature of 55 ℃ for cooling for 3min, and then the cable core is put into water with the temperature of 55 ℃ for cooling for 5min;
s4, coating an inner protective layer: coating an inner protection layer on the outer side of the insulating layer of the cable core coated with the insulating layer in the step S3 through an extruding machine again, wherein the inner protection layer is made of thermoplastic polyurethane elastomer rubber materials;
s5, coating a flame retardant layer: after the inner protective layer in the step S4 is coated, a flame-retardant layer is coated on the outer surface of the inner protective layer;
s7, coating an outer protective layer: and after the flame retardant layer in the step S6 is coated, the outer surface is coated with an outer protective layer, so that the preparation of the insulated flame retardant cable is realized, and the outer protective layer is prepared by mixing a crosslinked polyethylene base material, a flame retardant and an ultraviolet absorbent according to a certain proportion.
Embodiment III: referring to fig. 1-4, the invention discloses an insulating flame-retardant new energy automobile cable, which comprises a cable body 1, wherein an inner supporting structure 2 is arranged in the cable body 1, a core guiding groove 21 is formed in the surface of the inner supporting structure 2, a cable core 22 is arranged on the inner wall of the core guiding groove 21, an insulating layer 3 is wrapped on the surface of the inner supporting structure 2, an inner protective layer 4 is arranged between the inner supporting structure 1 and the insulating layer 3, a first flame-retardant layer 5 is arranged on the surface of the inner protective layer 4, a second flame-retardant layer 6 is arranged on the side surface of the first flame-retardant layer 5, an outer protective layer 7 is arranged on the side surface of the second flame-retardant layer 6, the inner supporting structure 2 and the inner protective layer 4 are both made of modified rubber materials, the first flame-retardant layer 5 is made of alkali-free glass filaments and glass fiber belts, the surface of the inner protective layer 4 is wrapped by polyolefin, the second flame-retardant layer 6 is halogen-free flame-retardant material processed by adding inorganic flame retardants and phosphorus flame retardants, and the outer protective layer 7 is made of low-smoke halogen-free cross-linked polyolefin material.
A production process of an insulating flame-retardant cable for a new energy automobile comprises the following steps:
s1, preparing a cable core: carrying out concentric double twisting on the required cable to obtain a cable core;
s2, coating an insulating layer: after the cable core is manufactured, an insulating layer is coated on the outer surface of the cable core by using an extruder, and the insulating layer comprises the following raw materials in parts by weight: 80 parts of high-pressure polyethylene resin, 20 parts of N, N-diethyl cyanoacetamide, 11 parts of 4-dimethylaminophenylboronic acid, 3 parts of a catalyst, 3 parts of a curing agent and 8 parts of a flame retardant, wherein the catalyst is tetrakis (triphenylphosphine) palladium, the curing agent is 2-ethyl-4-methylimidazole, the flame retardant is tributyl phosphate, and the preparation steps of the insulating layer raw materials are as follows: heating high-pressure polyethylene resin, N-diethyl cyanoacetamide, 4-dimethylaminophenylboronic acid and a catalyst to 100 ℃ under the protection of nitrogen, reacting at constant temperature for 3 hours to obtain a mixed product, adding a curing agent and a flame retardant into the obtained mixed product, and continuously stirring for 1.5 hours to obtain an insulating layer raw material;
s3, cooling treatment: the insulating layer coating in the step S2 is put into cooling water for cooling treatment, the cooling treatment is divided into two times, firstly, the cable core coated by the insulating layer is put into water with the temperature of 60 ℃ for cooling for 4min, and then the cable core is put into water with the temperature of 60 ℃ for cooling for 5min;
s4, coating an inner protective layer: coating an inner protection layer on the outer side of the insulating layer of the cable core coated with the insulating layer in the step S3 through an extruding machine again, wherein the inner protection layer is made of polyurethane;
s5, coating a flame retardant layer: after the inner protective layer in the step S4 is coated, a flame-retardant layer is coated on the outer surface of the inner protective layer;
s7, coating an outer protective layer: and after the flame retardant layer in the step S6 is coated, the outer surface is coated with an outer protective layer, so that the preparation of the insulated flame retardant cable is realized, and the outer protective layer is prepared by mixing a crosslinked polyethylene base material, a flame retardant and an ultraviolet absorbent according to a certain proportion.
Judgment standard: the invention effectively improves the additive components, adds the catalyst, the curing agent and the flame retardant in the preparation process, improves the flame retardance of the cable, avoids damaging the cable when the cable is used at high temperature, prolongs the service life of the cable, and has the best effect as the second embodiment, so the second embodiment is selected as the best embodiment, and the specific change of the quantity also belongs to the protection scope of the technical scheme.
In summary, the cable for the insulated flame-retardant new energy automobile and the production process thereof effectively improve the additive components, and the catalyst, the curing agent and the flame retardant are added in the preparation process, so that the flame retardance of the cable is improved, the cable is prevented from being damaged when the cable is used at high temperature, the service life of the cable is prolonged, the good process performance is achieved, no toxic gas is released when the cable is combusted, the cable has excellent safety and environmental friendliness, the process is simple, the production efficiency is high, and the processing cost can be greatly reduced; through setting up first fire-retardant layer and second fire-retardant layer, pack the fire retardant in its inside to let it have fire-retardant effect, improve the adhesive strength of fire retardant and cable, reach the purpose that improves fire retardant adhesion volume, improve fire-retardant effect, the setting of outer protective layer and interior protective layer has excellent anti cracking performance, mechanical physical properties and processability.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an insulating fire-retardant formula new energy automobile cable, includes cable body (1), its characterized in that: the cable comprises a cable body (1), wherein an inner supporting structure (2) is arranged inside the cable body (1), a guide core groove (21) is formed in the surface of the inner supporting structure (2), a cable core (22) is arranged on the inner wall of the guide core groove (21), an insulating layer (3) is wrapped on the surface of the inner supporting structure (2), an inner protection layer (4) is arranged between the inner supporting structure (1) and the insulating layer (3), a first flame-retardant layer (5) is arranged on the surface of the inner protection layer (4), a second flame-retardant layer (6) is arranged on the side surface of the first flame-retardant layer (5), and an outer protection layer (7) is arranged on the side surface of the second flame-retardant layer (6).
2. The insulated flame-retardant new energy automobile cable according to claim 1, wherein: the inner support structure (2) and the inner protective layer (4) are both made of modified rubber materials.
3. The insulated flame-retardant new energy automobile cable according to claim 1, wherein: the first flame-retardant layer (5) is made of alkali-free glass fiber and glass fiber tape, and is wrapped on the surface of the inner protective layer (4), and the second flame-retardant layer (6) is a halogen-free flame-retardant material processed by adding inorganic flame retardants and phosphorus flame retardants into polyolefin.
4. The insulated flame-retardant new energy automobile cable according to claim 1, wherein: the outer protective layer (7) is made of low-smoke halogen-free cross-linked polyolefin material.
5. The process for producing an insulated flame-retardant new energy automobile cable according to any one of claims 1 to 4, comprising the steps of:
s1, preparing a cable core: carrying out concentric double twisting on the required cable to obtain a cable core;
s2, coating an insulating layer: after the cable core is manufactured, an insulating layer is coated on the outer surface of the cable core by using an extruder;
s3, cooling treatment: putting the insulating layer in the step S2 into cooling water for cooling treatment after coating;
s4, coating an inner protective layer: coating an inner protection layer on the outer side of the insulating layer of the cable core coated with the insulating layer in the step S3 through an extruding machine;
s5, coating a flame retardant layer: after the inner protective layer in the step S4 is coated, a flame-retardant layer is coated on the outer surface of the inner protective layer;
s7, coating an outer protective layer: and after the coating of the flame retardant layer in the step S6 is completed, the outer surface is coated with an outer protective layer, so that the preparation of the insulated flame retardant cable is realized.
6. The production process of the insulating flame-retardant new energy automobile cable, which is characterized in that: the insulating layer in the step S2 is prepared from the following raw materials in parts by weight: 80-100 parts of high-pressure polyethylene resin, 20-30 parts of N, N-diethyl cyanoacetamide, 8-12 parts of 4-dimethylaminophenylboronic acid, 1-3 parts of catalyst, 2-3 parts of curing agent and 8-10 parts of flame retardant.
7. The production process of the insulating flame-retardant new energy automobile cable according to claim 6, which is characterized in that: the catalyst is tetra (triphenylphosphine) palladium, the curing agent is 2-ethyl-4-methylimidazole, and the flame retardant is one of tributyl phosphate, 2-ethylhexyl ester, 2-chloroethyl ester, 2, 3-dichloropropyl ester or 2, 3-dibromopropyl ester.
8. The production process of the insulating flame-retardant new energy automobile cable, which is characterized in that: the preparation steps of the insulating layer raw materials in the step S2 are as follows: under the protection of nitrogen, heating high-pressure polyethylene resin, N-diethyl cyanoacetamide, 4-dimethylaminophenylboronic acid and a catalyst to 90-100 ℃ under stirring, reacting for 2-3 hours at constant temperature to obtain a mixed product, adding a curing agent and a flame retardant into the obtained mixed product, and continuously stirring for 1-1.5 hours to obtain the insulating layer raw material.
9. The production process of the insulating flame-retardant new energy automobile cable, which is characterized in that: the cooling treatment in the step S3 is carried out twice, firstly, the cable core coated by the insulating layer is put into water with the temperature of 50-60 ℃ to be cooled for 3-4min, and then is put into warm water to be cooled for 4-5min.
10. The production process of the insulating flame-retardant new energy automobile cable, which is characterized in that: the inner protective layer in the step S4 is made of one of polyvinyl chloride material, thermoplastic polyurethane elastomer rubber material and polyurethane material, and the outer protective layer in the step S7 is made of a cross-linked polyethylene base material, a flame retardant and an ultraviolet absorber which are mixed according to a certain proportion.
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| CN202310429098.1A CN116564602A (en) | 2023-07-10 | 2023-07-10 | Insulating flame-retardant type new energy automobile cable and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310429098.1A CN116564602A (en) | 2023-07-10 | 2023-07-10 | Insulating flame-retardant type new energy automobile cable and production process thereof |
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