CN109065239A - A kind of environmentally protective low-voltage alternating-current cable of B1 used for intelligent electric network grades of high fire-retardances and manufacturing process - Google Patents
A kind of environmentally protective low-voltage alternating-current cable of B1 used for intelligent electric network grades of high fire-retardances and manufacturing process Download PDFInfo
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- CN109065239A CN109065239A CN201810930490.3A CN201810930490A CN109065239A CN 109065239 A CN109065239 A CN 109065239A CN 201810930490 A CN201810930490 A CN 201810930490A CN 109065239 A CN109065239 A CN 109065239A
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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
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/10—Insulating conductors or cables by longitudinal lapping
-
- 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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
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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
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
-
- 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
- H01B7/1895—Internal space filling-up means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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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Abstract
The present invention relates to B1 grades of cable production art used for intelligent electric network, in particular to a kind of environmentally protective low-voltage alternating-current cable of B1 grades of high fire-retardance used for intelligent electric network and manufacturing process.The cable includes at least three conductor cores, the structure with the fire-retardant wrapped+high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket of the fire-retardant wrapping layer of flame resistant filler layer+the first+high oxygen barrier layer+armor+the second；The high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket is mainly prepared from the following raw materials: 25~35 parts of ethylene-vinyl acetate copolymer resin；65~75 parts of linear low density polyethylene；43~53 parts of composite reinforcing agent；1.8~2.2 parts of compounded lubricant；72~88 parts of fire retardant；0.9~1.1 part of antioxidant；0.45~0.55 part of ultraviolet absorbing agent.The construction of cable setting rationally, has the characteristics such as antiultraviolet, low cigarette, Halogen, B1 grades fire-retardant, protection against rodents, termite-proof.
Description
Technical field
The present invention relates to B1 grades of cable production arts used for intelligent electric network, in particular to a kind of B1 grades used for intelligent electric network
The environmentally protective low-voltage alternating-current cable of high fire-retardance and manufacturing process.
Background technique
The construction of strong smart grid can satisfy demand of the socio-economic development to electric power, can be asked with coping resources environment
Topic bring challenge is adapted to the diversified demand for development of hair electricity and can satisfy diversification power supply service demand.It is hard
Strong smart grid is support with communication information platform based on strong rack, includes electric system using intelligent control as means
Power generation, transmission of electricity, power transformation, six big links of distribution, electricity consumption and scheduling, cover all voltage class, realize " flow of power, information flow,
The very high integrity of Business Stream " merges.And in six big links, power distribution network is due to its complexity and is in user terminal, cable
Especially attention of the safety, reliability on road by user, the demand of low-voltage alternating-current cable environmentally protective for B1 grades of high fire-retardances
Also higher and higher.
Low-voltage alternating-current cable used for intelligent electric network is the aorta of regional distribution network, in government bodies, hospital, school, municipal administration
There is laying in the place of the densely populated places such as communal facility, office block, once fire, which occurs, will likely discharge a large amount of poison gas,
Grave danger is brought to fire-fighting disposition and personnel escape.
However, the bunchy for being able to satisfy existing low-voltage alternating-current cable used for intelligent electric network on the market is fire-retardant, low smoke and zero halogen and cigarette are close
The combustibilities and heat emission characteistics, flue gas release characteristics, dropping combustibility, flue gas toxity under Fire Conditions etc. such as degree refer to
Target product still falls within blank, is not able to satisfy the requirement using unit for B1 grades of combustion ratings.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of environmentally protective low-voltage alternating-current cable of B1 used for intelligent electric network grades of high fire-retardances,
The cable has the fire-retardant wrapping layer of flame resistant filler layer+the first+fire-retardant wrapped+high fire-retardance of high oxygen barrier layer+armor+the second low
The structure of cigarette Halogen antiultraviolet rat-and-ant proof outer jacket, structure setting is reasonable, can be laid in indoor or outdoors, underground, cable
The positions such as gantry, cable duct have the characteristics such as antiultraviolet, low cigarette, Halogen, B1 grades fire-retardant, protection against rodents, termite-proof.Outer jacket with
Ethylene-vinyl acetate copolymer resin and linear low density polyethylene are primary raw material, add reinforcing agent, the lubrication of suitable proportion
Agent, fire retardant, antioxidant and ultraviolet absorbing agent, when there is good high fire-retardance, anti-cracking performance, good mechanical performance, burning
The advantages that low smoke and zero halogen and low-heat release characteristics.
The second object of the present invention is to provide a kind of manufacturing process of cable, and the technological design is reasonable, operation letter
It is single.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of environmentally protective low-voltage alternating-current cable of B1 used for intelligent electric network grades of high fire-retardances, the cable include at least three conductors
Core, the fire resisting wrapping layer and crosslinked polyetylene insulated layer that the conductor cores include conductor and its periphery successively coats；The conductor
Flame resistant filler layer, the first fire-retardant wrapping layer, high oxygen barrier layer, armor, the second fire-retardant wrapping layer and high fire-retardance are successively coated outside core
Low smoke and zero halogen antiultraviolet rat-and-ant proof outer jacket；
The high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket is mainly prepared from the following raw materials:
The manufacturing process of above-mentioned cable, comprising: form around the outer surface for being wrapped in the conductor fluorophlogopite belt described
Fire resisting wrapping layer, crosslinked polyethylene material is extruded formed in the outer surface of the fire resisting wrapping layer it is described crosslinked polyetylene insulated
The conductor stranding is core by layer, and glass fiber tape is formed the described first fire-retardant wrapping layer around being wrapped in outside the core,
Gap between the conductor and between the first fire-retardant wrapping layer and the conductor carry out fire proofing fill to be formed it is described
Flame resistant filler layer extrudes the oxygen barrier material of high fire-retardance in the described first fire-retardant wrapping layer and forms the high oxygen barrier layer, by galvanized steel strip around
It is wrapped in the high oxygen barrier layer outer surface and forms the armor, glass fiber tape is formed into institute around the armor outer surface is wrapped in
The second fire-retardant wrapping layer is stated, extrudes high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof protective cover material in outside the described second fire-retardant wrapping layer
Surface formed the high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket to get.
Compared with prior art, the invention has the benefit that
(1) the application cable can be laid in the positions such as indoor or outdoors, underground, cable testing bridge, cable duct.Cable has
The characteristics such as antiultraviolet, low cigarette, Halogen, B1 grades fire-retardant, protection against rodents, termite-proof.
(2) highest allows operating temperature to be 90 DEG C, and short circuit allows temperature to be 250 DEG C (maximum duration 5S).
(3) comprehensively consider the heat release under the combustibilities such as fire-retardant bunchy, low smoke and zero halogen and smoke density and Fire Conditions
The indexs such as characteristic, flue gas release characteristics, dropping combustibility, flue gas toxity, and have studied the mechanical strength of material, smoke density,
The macro properties such as oxygen index (OI), heat release rate, flue gas rate of release, thermal decomposition characteristic, the cable of design can meet B1 grades of burnings
Demand (is measured) according to GB 31247-2014 and its defined test method, especially suitable for smart grid.
(4) conductor DC resistance meets the regulation of GB/T 3956 in the application, and insulation resistance should meet GB/T's 12706
Regulation.The mechanical performance of cable sheath material is all satisfied the requirement of GB/T 12706.1, and the resistance to environmental aging performance of sheath should expire
The requirement (test is carried out by step B) of " resisting environmental stress and cracking test " in sufficient GB/T 2951.41.
(5) the cable high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket of the application have high oxygen index (OI) (38%),
The performances such as low smoke and zero halogen, low toxicity, environmental stress crack resistance, rat-and-ant proof, ultraviolet-resistant aging.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the Anatomical Structure figure of the five-core cable circular section in one embodiment 3；
Description of symbols: 1- conductor；2- fire resisting wrapping layer；The crosslinked polyetylene insulated layer of 3-；4- flame resistant filler layer；5-
One fire-retardant wrapping layer；6- high oxygen barrier layer；7- armor；The fire-retardant wrapping layer of 8- second；9- high flame resistance, low smoke Halogen antiultraviolet is anti-
Mouse ant outer jacket.
Specific embodiment
A kind of environmentally protective low-voltage alternating-current cable of B1 used for intelligent electric network grades of high fire-retardances, the cable include at least three conductors
Core, the fire resisting wrapping layer and crosslinked polyetylene insulated layer that the conductor cores include conductor and its periphery successively coats；The conductor
Flame resistant filler layer, the first fire-retardant wrapping layer, high oxygen barrier layer, armor, the second fire-retardant wrapping layer and high fire-retardance are successively coated outside core
Low smoke and zero halogen antiultraviolet rat-and-ant proof outer jacket；
The high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket is mainly prepared from the following raw materials:
In some embodiments, the material quality score of above-mentioned material can be with are as follows: ethylene-vinyl acetate copolymer resin
25 parts, 68 parts of linear low density polyethylene, 43 parts of composite reinforcing agent, 1.8 parts of compounded lubricant, 88 parts of fire retardant, antioxidant 1.0
Part, 0.45 part of ultraviolet absorbing agent；27 parts of ethylene-vinyl acetate copolymer resin, 75 parts of linear low density polyethylene, compound benefit
Strong 50 parts of agent, 2.0 parts of compounded lubricant, 72 parts of fire retardant, 1.1 parts of antioxidant, 0.50 part of ultraviolet absorbing agent；Ethyl vinyl acetate
35 parts of ethylene copolymer resin, 65 parts of linear low density polyethylene, 53 parts of composite reinforcing agent, 2.2 parts of compounded lubricant, fire retardant
77 parts, 0.9 part of antioxidant, 0.55 part of ultraviolet absorbing agent；32 parts of ethylene-vinyl acetate copolymer resin, linea low density are poly-
72 parts of ethylene, 45 parts of composite reinforcing agent, 1.9 parts of compounded lubricant, 85 parts of fire retardant, 0.9 part of antioxidant, ultraviolet absorbing agent
0.50 part；30 parts of ethylene-vinyl acetate copolymer resin, 70 parts of linear low density polyethylene, 48 parts of composite reinforcing agent, compound profit
2.0 parts of lubrication prescription, 80 parts of fire retardant, 1.0 parts of antioxidant, 0.50 part of ultraviolet absorbing agent etc..
Halide-containing can generate a large amount of toxic gases in burning, and Given this raw materials used present invention is Halogen chemical combination
Object.In design, the combustibilities such as fire-retardant bunchy, low smoke and zero halogen and smoke density and mechanical strength, smoke density, oxygen are comprehensively considered
The macro properties research material formula such as index, heat release rate, flue gas rate of release, thermal decomposition characteristic.Optimal resistance is obtained
Combustion agent type and dosage determine optimal fire proofing addition proportion, ethylene-vinyl acetate copolymer resin and linea low density
The more excellent proportion of polyethylene and suitable reinforcing agent, lubricant, antioxidant and ultraviolet absorber, finally determining high fire-retardance is low
Cigarette Halogen antiultraviolet material have high fire-retardance (oxygen index (OI) 38%), excellent anti-cracking performance, excellent mechanical properties, low cigarette without
Halogen, low-heat release characteristics.
Ethylene-vinyl acetate copolymer resin (EVA) is a kind of thermoplastic resin as obtained by ethylene and cruel sour ethylene copolymer
Rouge has good filler inclusiveness and cross linkable, and good flame retardation effect, high temperature resistant be not crisp, and thermal stability is good, anti-aging and resistance to
Ozone intensity is good, burning non smoke, nontoxic, environmental protection, the advantages that not oozing out.In addition, it is good with the miscibility of filler, coloring and at
Type processability is good.
Low density polyethylene (LDPE) (Low Density Polyethylene, LDPE) is also known as high pressure polyethylene, is a kind of plastics
Material, it is suitble to the various moulding process of thermoplastic molding's processing, and molding processibility is good, is good film product raw material.With
High density polyethylene (HDPE) is compared, and low density polyethylene (LDPE) insulation performance is more.
Linear low density polyethylene (Linear Low Density Polyethylene, LLDPE) is not deposited in structure
In long-chain branch, there is linear structure it to be made to have different rheological behaviors, chemical property is highly stable, hardly with any substance
It chemically reacts, determines that it is the production good raw material of protective coverings of cable.It is compared with common low density polyethylene (LDPE), it is linear low
The fusing point of density polyethylene is higher, and resistance to low temperature is more preferable, and environmental stress crack resistance is also more preferable.
Ethylene-vinyl acetate copolymer resin and linear low density polyethylene are used as the good main material of material of the present invention,
But the mechanical performance of the two is poor, therefore needs that reinforcing agent is added on this basis, with certain mechanical strength.The present invention mentions
The mechanical performance of the material of confession meets the requirement of GB/T 12706.1.
In some embodiments, the conductor is the 2nd class soft copper conductor.
In some embodiments, the number of the conductor cores is 3~5.
In some embodiments, the composite reinforcing agent includes diatomite and the second component；Second component includes
Carbon black, white carbon black, acetylene carbon black it is one or more；The diatomite and the mass ratio of the second component are 1:1.5~2.0.
In some embodiments, the number of the conductor cores can also be 4.
In some embodiments, the diatomite and the mass ratio of the second component can also be 1:1.6,1:1.7,1:
1.8,1:1.9 etc..
The main component of diatomite is that the remains from algae in deep-sea are heavy after the 1 years earth's crust changes mineralising
Product rock, can improve the elasticity and intensity of material, increase wear-and corrosion-resistant effect.And it is pointed out that diatom earth removal has to mend
Outside strong effect, main component is inorganic substances, itself pyroconductivity is low, can have fusing point with high temperature resistant, without burning point, have
Anti-flammability, therefore be also good fire retardant.
Carbon black, white carbon black and acetylene carbon black are good reinforcing agents.And it is pointed out that carbon black, white carbon black and second
After alkynes carbon black is added, material oxygen index (OI) increases, and burning point increases, and has the effect of fire retardant.In addition, it makes with suction-operated
It obtains and produces certain skeletal support effect in combustion process, so that no liquid is dripped when burning, flame is upwards to slow down combustion
Burning trend.
In some embodiments, the compounded lubricant includes zinc stearate and hydroxy silicon oil；The zinc stearate and
The mass ratio of silicone oil is 1:0.8~1.2.
Zinc stearate is in addition to lubricant effect or good heat stabilizer, it may have the effect of auxiliary flame retardant.Hydroxyl
Base silicone oil is good lubricant, and the mixed toughness of each raw material also can be improved.In addition, silicone oil is also good fire retardant.?
In some embodiments, the mass ratio of the zinc stearate and silicone oil can also be 1:0.9,1:1,1:1.1 etc..
In some embodiments, the fire retardant is aluminium hydroxide and/or magnesium hydroxide.
Preferably, the fire retardant is aluminium hydroxide and magnesium hydroxide, the mass ratio of the aluminium hydroxide and magnesium hydroxide
Example is 1:1.0~1.5.
Inorganic fire retardants has many advantages, such as that thermal stability is good, nontoxic, flame retardant effect is lasting, smoke suppressing effect is good, cheap.
It is fire-retardant to have the function that noninflammability barrier can be formed when aluminium hydroxide and heated magnesium hydroxide, while being also good
Good smoke suppressant.The performance that magnesium hydroxide inhibits temperature to rise is poorer than aluminium hydroxide but excellent to the charing fire retardation of polymer
In aluminium hydroxide, therefore the two is used in combination, and complements one another, effect is more preferable.In some embodiments, the aluminium hydroxide and hydrogen
The mass ratio of magnesia can also be 1:0.9,1:1.1,1:1.2,1:1.4,1:1.6,1:1.7 etc..
With aluminium hydroxide and/or magnesium hydroxide for main fire retardant, and add other charcoals with part flame retarding function
Black, white carbon black, the one or more of acetylene carbon black, diatomite, zinc stearate and hydroxy silicon oil, each component type and dosage add
Add proportion setting rationally, manufactured material is made to meet the characteristic of high flame resistance, low smoke Halogen to the greatest extent, meets the mark of GB 31247
The requirement of B1 grades of combustion ratings in standard, especially " by the hot total volume of fiery 1200s ", " by the production cigarette total amount in fiery 1200s ",
" heat release rate peak value ", " producing cigarette rate peak value ", " without density flaming droplet/particle in 1200s " etc..Simultaneously by adjusting each group
The dosage of the proportion and reinforcing agent divided, is allowed to meet certain mechanical strength.
In some embodiments, stating antioxidant is Hinered phenols antioxidant, and the Hinered phenols antioxidant includes antioxygen
Agent 1010, antioxidant 264 and antioxidant 1076 it is one or more.
The antioxygen property of material can be improved in the addition of antioxidant, effectively extends the service life of product.
Antioxidant 1010, entitled four [β-(3, the 5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester of chemistry, is one
Kind thermal stability is high, is very suitable for the antioxidant used under hot conditions, can extend the service life of product.
Antioxidant 264, chemical name 2,6- di-tert-butyl-4-methy phenol (BHT) is odorless, tasteless, has good
Thermal stability.
Antioxidant 1076, chemical name is β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester, nontoxic
Pollution-free, heat-resisting and water-extraction resistance is good.
In some embodiments, the ultraviolet absorbing agent is benzophenone class light stabilizer.
In some embodiments, the ultraviolet absorbing agent is oxygroup benzophenone.
Preferably, the oxygroup benzophenone is that ESCALOL 567 and/or 2- hydroxyl -4- are just pungent
Oxygroup benzophenone.
Material application site provided by the invention is extensive, and to meet outdoor application demand, ultraviolet radiation absorption is added in raw material
Agent makes finished-product material have ultraviolet-resistant capacity.
In the present invention, high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket can be used following methods and be prepared: will
It being transferred in Twin screw extruder and is squeezed out after the mixing of each raw material, temperature is 110~170 DEG C, 60~600 revs/min of screw speed,
The granulating and forming at 120~140 DEG C again, obtained particle is processed to obtain the high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof
Outer jacket.
Another aspect provides the manufacturing process of above-mentioned cable, comprising: fluorophlogopite belt is described around being wrapped in
The outer surface of conductor forms the fire resisting wrapping layer, and crosslinked polyethylene material is extruded and is formed in the outer surface of the fire resisting wrapping layer
The conductor stranding is core by the crosslinked polyetylene insulated layer, and glass fiber tape is formed institute around the core is wrapped in outside
The first fire-retardant wrapping layer is stated, the gap between the conductor and between the first fire-retardant wrapping layer and the conductor is hindered
Combustible material fills to form the flame resistant filler layer, extrude the oxygen barrier material of high fire-retardance in the described first fire-retardant wrapping layer formed it is described it is high every
Galvanized steel strip is formed the armor around the high oxygen barrier layer outer surface is wrapped in by oxygen layer, and glass fiber tape is described around being wrapped in
Armor outer surface forms the described second fire-retardant wrapping layer, extrudes high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof protective cover material in institute
State the second fire-retardant wrapping layer outer surface formed the high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket to get.
Preferably, the conductor presses using multiply annealed copper wire is twisted, and composition, performance and appearance should meet
The regulation of the 2nd kind of conductor of GB/T3956 standard, burr, sharp edge and the protrusion or fracture of bright and clean, the not damaged insulation of conductive surface
Single line.
Preferably, the insulation performance of the crosslinked polyetylene insulated layer meets GB/T12706.1 standard requirements.
Preferably, the flame resistant filler layer carries out dense packing effect using fire proofing, prevents flame from longitudinally spreading.
Preferably, the oxygen index (OI) of high oxygen barrier layer is up to 45%.
Armor can carry out mechanical protection to cable.
Second fire-retardant wrapping layer can prevent heat transfer to the steel of high thermal conductivity.
High flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket has high oxygen index (OI) (38%), low smoke and zero halogen, low toxicity, resists
The performances such as environmental stress cracking, rat-and-ant proof, ultraviolet-resistant aging.
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
It can be with conventional products that are commercially available.
Embodiment 1
Mix the raw material of following weight: ethylene-vinyl acetate copolymer resin 25kg, linear low density polyethylene 75kg,
Composite reinforcing agent 43kg (diatomite 15kg, carbon black 28kg), compounded lubricant 2.2kg (zinc stearate 1kg, hydroxy silicon oil
1.2kg), fire retardant 72kg (aluminium hydroxide 72kg), antioxidant 0.9kg (antioxidant 264 0.9kg), ultraviolet absorbing agent
0.55kg (2-hydroxy-4-n-octoxybenzophenone 0.55kg), high mixer mix 2~8 minutes, are then transferred to double helix extrusion
Squeezed out in machine, temperature be 110 DEG C, 60~300 revs/min of screw speed, then at 130 DEG C granulating and forming up to outer jacket material
And it is spare.
By 5 conductor cores wire drawing and annealings and it is twisted press, wrapped 2 layers of fluorophlogopite belt is overlapped outside conductor, and to form fire resisting wrapped
Then layer extrudes crosslinked polyethylene and forms insulating layer and stranding, using fire proofing dense packing effect cable core gap, then in stranding
Wrapped 2 layers of glass fiber tape forms fire-retardant wrapping layer on core, then extrudes the oxygen barrier material of high fire-retardance and forms high oxygen barrier layer, height every
Wrapped 2 layers of galvanized steel strip forms armor outside thermosphere, be overlapped outside armor wrapped 3 layers of glass fiber tape formed it is fire-retardant wrapped
Layer finally extrudes high flame resistance, low smoke Halogen antiultraviolet polyolefin jacket material and forms outer jacket formation cable, carries out manufacture test
And detection.
Embodiment 2
Mix the raw material of following weight: ethylene-vinyl acetate copolymer resin 35kg, linear low density polyethylene 65kg,
Composite reinforcing agent 53kg (diatomite 21.2kg, white carbon black 31.8kg), compounded lubricant 1.8kg (zinc stearate 1kg, hydroxyl silicon
Oily 0.8kg), fire retardant 88kg (aluminium hydroxide 35kg, magnesium hydroxide 53kg), antioxidant 1.1kg (antioxidant 1076 1.1kg),
Ultraviolet absorbing agent 0.45kg (ESCALOL 567 0.25kg, 2-hydroxy-4-n-octoxybenzophenone
0.2kg), high mixer mixes 2~8 minutes, is then transferred in Twin screw extruder and is squeezed out, and temperature is 170 DEG C, screw speed
60~600 revs/min, then at 120 DEG C granulating and forming up to outer jacket material and spare.
By 5 conductor cores wire drawing and annealings and it is twisted press, wrapped 3 layers of fluorophlogopite belt is overlapped outside conductor, and to form fire resisting wrapped
Then layer extrudes crosslinked polyethylene and forms insulating layer and stranding, using fire proofing dense packing effect cable core gap, then in stranding
Wrapped 2 layers of glass fiber tape forms fire-retardant wrapping layer on core, then extrudes the oxygen barrier material of high fire-retardance and forms high oxygen barrier layer, height every
Wrapped 2 layers of galvanized steel strip forms armor outside thermosphere, be overlapped outside armor wrapped 2 layers of glass fiber tape formed it is fire-retardant wrapped
Layer finally extrudes high flame resistance, low smoke Halogen antiultraviolet polyolefin jacket material and forms outer jacket formation cable, carries out manufacture test
And detection.
Embodiment 3
Mix the raw material of following weight: ethylene-vinyl acetate copolymer resin 30kg, linear low density polyethylene 70kg,
Composite reinforcing agent 48kg (diatomite 18kg, acetylene carbon black 30kg), compounded lubricant 2kg (zinc stearate 1kg, hydroxy silicon oil
1kg), fire retardant 80kg (aluminium hydroxide 42kg, magnesium hydroxide 46kg), antioxidant 1kg (antioxidant 1010 1kg), ultraviolet light are inhaled
It receives agent 0.5kg (ESCALOL 567 0.5kg), high mixer mixes 2~8 minutes, is then transferred to double helix extrusion
Squeezed out in machine, temperature be 150 DEG C, 100~400 revs/min of screw speed, then at 140 DEG C granulating and forming up to outer jacket
Expect and spare.
By 5 conductor cores wire drawing and annealings and it is twisted press, wrapped 2 layers of fluorophlogopite belt is overlapped outside conductor, and to form fire resisting wrapped
Then layer extrudes crosslinked polyethylene and forms insulating layer and stranding, using fire proofing dense packing effect cable core gap, then in stranding
Wrapped 2 layers of glass fiber tape forms fire-retardant wrapping layer on core, then extrudes the oxygen barrier material of high fire-retardance and forms high oxygen barrier layer, height every
Wrapped 2 layers of galvanized steel strip forms armor outside thermosphere, be overlapped outside armor wrapped 2 layers of glass fiber tape formed it is fire-retardant wrapped
Layer finally extrudes high flame resistance, low smoke Halogen antiultraviolet polyolefin jacket material and forms outer jacket formation cable, carries out manufacture test
And detection.
Embodiment 4
Mix the raw material of following weight: ethylene-vinyl acetate copolymer resin 28kg, linear low density polyethylene 72kg,
Composite reinforcing agent 45kg (diatomite 17kg, carbon black 15kg, white carbon black 13kg), compounded lubricant 2.1kg (zinc stearate 1.0kg,
Hydroxy silicon oil 1.1kg), fire retardant 78kg (magnesium hydroxide 78kg), antioxidant 1.0kg (antioxidant 264 0.5kg, antioxidant
1010 0.5kg), ultraviolet absorbing agent 0.5kg (2-hydroxy-4-n-octoxybenzophenone 0.5kg), high mixer mixing 2~8
Minute, it is then transferred in Twin screw extruder and is squeezed out, temperature is 130 DEG C, 400~600 revs/min of screw speed, then 135
Granulating and forming is at DEG C up to outer jacket material and spare.
By 5 conductor cores wire drawing and annealings and it is twisted press, wrapped 2 layers of fluorophlogopite belt is overlapped outside conductor, and to form fire resisting wrapped
Then layer extrudes crosslinked polyethylene and forms insulating layer and stranding, using fire proofing dense packing effect cable core gap, then in stranding
Wrapped 3 layers of glass fiber tape forms fire-retardant wrapping layer on core, then extrudes the oxygen barrier material of high fire-retardance and forms high oxygen barrier layer, height every
Wrapped 2 layers of galvanized steel strip forms armor outside thermosphere, be overlapped outside armor wrapped 2 layers of glass fiber tape formed it is fire-retardant wrapped
Layer finally extrudes high flame resistance, low smoke Halogen antiultraviolet polyolefin jacket material and forms outer jacket formation cable, carries out manufacture test
And detection.
Embodiment 5
Mix the raw material of following weight: ethylene-vinyl acetate copolymer resin 27kg, linear low density polyethylene 72kg,
Composite reinforcing agent 48kg (diatomite 18kg, acetylene carbon black 12kg, carbon black 12kg, white carbon black 6kg), compounded lubricant 2kg are (stearic
Sour zinc 1kg, hydroxy silicon oil 1kg), fire retardant 76kg (aluminium hydroxide 37kg, magnesium hydroxide 39kg), antioxidant 1kg (antioxidant
1010 0.4kg, antioxidant 264 0.3kg, 1.76 0.3kg of antioxidant), ultraviolet absorbing agent 0.5kg (2- hydroxyl -4- methoxy
Base benzophenone 0.5kg), high mixer mixes 2~8 minutes, and it is then transferred in Twin screw extruder and is squeezed out, temperature 160
DEG C, 100~600 revs/min of screw speed, then at 120 DEG C granulating and forming up to outer jacket material and spare.
By 5 conductor cores wire drawing and annealings and it is twisted press, wrapped 2 layers of fluorophlogopite belt is overlapped outside conductor, and to form fire resisting wrapped
Then layer extrudes crosslinked polyethylene and forms insulating layer and stranding, using fire proofing dense packing effect cable core gap, then in stranding
Wrapped 2 layers of glass fiber tape forms fire-retardant wrapping layer on core, then extrudes the oxygen barrier material of high fire-retardance and forms high oxygen barrier layer, height every
Wrapped 3 layers of galvanized steel strip forms armor outside thermosphere, be overlapped outside armor wrapped 2 layers of glass fiber tape formed it is fire-retardant wrapped
Layer finally extrudes high flame resistance, low smoke Halogen antiultraviolet polyolefin jacket material and forms outer jacket formation cable, carries out manufacture test
And detection.
Experimental example 1
Cable fire level estimate.
B1 grades of flame retardant properties are measured according to GB 31247-2014 and its defined test method.(note: B1 grades of burnings
Test is just to require to execute after Xi'an geothermic field triumphant cable event difficult to understand occurs, and combustion standard is higher than current standard GB/T/T
19666 regulation A class bunchy burning, while the above index is that GB 31247 is exclusive, GB/T19666 is without such index).
1 cable fire level estimate result of table
Examples 1 to 5 is all satisfied B1 grades of burning behavior class of grading criteria, it was demonstrated that it is good B1 used for intelligent electric network
The grade environmentally protective low-voltage alternating-current cable of high fire-retardance.
Experimental example 2
Measuring mechanical property.
According to the method for GB/T 12706.1, the mechanical performance of test cable sheath material.
The experimental results showed that its mechanical performance is all satisfied the requirement of GB/T 12706.1.
Experimental example 3
Resistance to environmental aging test.
It is tested according to the step B that resisting environmental stress and cracking in GB/T 2951.41 is tested.
It is tested the experimental results showed that its resistance to environmental aging performance should meet resisting environmental stress and cracking in GB/T 2951.41, table
Its bright ultraviolet-resistant aging ability is stronger.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, but those skilled in the art should understand that: its
It is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features
It is equivalently replaced；And these are modified or replaceed, various embodiments of the present invention skill that it does not separate the essence of the corresponding technical solution
The range of art scheme.
Claims (10)
1. a kind of environmentally protective low-voltage alternating-current cable of B1 used for intelligent electric network grades of high fire-retardances, which is characterized in that the cable includes extremely
Few three conductor cores, the conductor cores include conductor and its periphery successively coats fire resisting wrapping layer and crosslinked polyetylene insulated
Layer；Flame resistant filler layer, the first fire-retardant wrapping layer, high oxygen barrier layer, armor, second fire-retardant wrapped is successively coated outside the conductor cores
Layer and high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket；
The high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket is mainly prepared from the following raw materials:
2. cable according to claim 1, which is characterized in that the conductor is the 2nd class soft copper conductor；
Preferably, the number of the conductor cores is 3~5.
3. cable according to claim 1, which is characterized in that the composite reinforcing agent includes diatomite and the second component；
Second component include carbon black, white carbon black, acetylene carbon black it is one or more；The mass ratio of the diatomite and the second component
Example is 1:1.5~2.0.
4. cable according to claim 1, which is characterized in that the compounded lubricant includes zinc stearate and hydroxyl silicon
Oil；The mass ratio of the zinc stearate and hydroxy silicon oil is 1:0.8~1.2.
5. cable according to claim 1, which is characterized in that the fire retardant is aluminium hydroxide and/or magnesium hydroxide；
Preferably, the fire retardant is aluminium hydroxide and magnesium hydroxide, and the mass ratio of the aluminium hydroxide and magnesium hydroxide is
1:1.0~1.5.
6. cable according to claim 1, which is characterized in that the antioxidant is Hinered phenols antioxidant, described to be obstructed
Phenolic antioxidant includes the one or more of antioxidant 1010, antioxidant 264 and antioxidant 1076.
7. material according to claim 1, which is characterized in that the ultraviolet absorbing agent is benzophenone class light stabilizer.
8. material according to claim 7, which is characterized in that the ultraviolet absorbing agent is oxygroup benzophenone；
Preferably, the oxygroup benzophenone is ESCALOL 567 and/or 2- hydroxyl -4- n-octyloxy
Benzophenone.
9. the manufacturing process of cable according to any one of claims 1 to 8 characterized by comprising fluorophlogopite belt is wrapped
The fire resisting wrapping layer is formed in the outer surface of the conductor, crosslinked polyethylene material is extruded in the appearance of the fire resisting wrapping layer
Face forms the crosslinked polyetylene insulated layer, is core by the conductor stranding, by glass fiber tape around being wrapped in outside the core
The described first fire-retardant wrapping layer is formed, the gap between the conductor and between the first fire-retardant wrapping layer and the conductor
It carries out fire proofing to fill to form the flame resistant filler layer, extrudes the oxygen barrier material of high fire-retardance in the described first fire-retardant wrapping layer and form institute
High oxygen barrier layer is stated, galvanized steel strip is formed into the armor around the high oxygen barrier layer outer surface is wrapped in, glass fiber tape is wrapped
The described second fire-retardant wrapping layer is formed in the armor outer surface, extrudes high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof sheath
Expect in the described second fire-retardant wrapping layer outer surface formed the high flame resistance, low smoke Halogen antiultraviolet rat-and-ant proof outer jacket to get.
10. manufacturing process according to claim 9, which is characterized in that every layer of the wrapped number of plies is 2~3 layers.
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| CN201810930490.3A CN109065239B (en) | 2018-08-15 | 2018-08-15 | B1-grade high-flame-retardant green environment-friendly low-voltage alternating-current cable for smart power grid and manufacturing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111326275A (en) * | 2020-03-28 | 2020-06-23 | 远东电缆有限公司 | Safe and environment-friendly composite cable with combustion performance of B1 level and production process thereof |
| CN112397229A (en) * | 2019-08-15 | 2021-02-23 | 江苏亨通电力电缆有限公司 | B1-grade flame-retardant direct-current traction cable for traction power supply system and preparation method thereof |
| CN112562890A (en) * | 2020-12-09 | 2021-03-26 | 浙江中兴电缆有限公司 | Improved generation high fire-retardant structural control fire resisting cable |
| CN112876758A (en) * | 2021-01-13 | 2021-06-01 | 江苏亨通电力电缆有限公司 | B1-level control cable for power equipment and manufacturing process |
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| CN112397229A (en) * | 2019-08-15 | 2021-02-23 | 江苏亨通电力电缆有限公司 | B1-grade flame-retardant direct-current traction cable for traction power supply system and preparation method thereof |
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| CN112562890A (en) * | 2020-12-09 | 2021-03-26 | 浙江中兴电缆有限公司 | Improved generation high fire-retardant structural control fire resisting cable |
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| CN112992413A (en) * | 2021-01-22 | 2021-06-18 | 江西江缆科技有限公司 | Heat-insulation fireproof cable and preparation method thereof |
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| CN116936174B (en) * | 2023-09-15 | 2023-11-21 | 南方珠江科技有限公司 | Low-voltage cable for smart power grid and preparation method thereof |
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Denomination of invention: A B1 class high flame retardant green environmental protection low voltage AC cable for smart grid and its manufacturing process Effective date of registration: 20220506 Granted publication date: 20200410 Pledgee: Bank of China Limited Suzhou Yangtze River Delta integration Demonstration Zone Branch Pledgor: JIANGSU HENGTONG POWER CABLE Co.,Ltd. Registration number: Y2022980005173 |
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Date of cancellation: 20230511 Granted publication date: 20200410 Pledgee: Bank of China Limited Suzhou Yangtze River Delta integration Demonstration Zone Branch Pledgor: JIANGSU HENGTONG POWER CABLE Co.,Ltd. Registration number: Y2022980005173 |
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