CN110491587A - A kind of fire-retardant fireproof the coat layer of power cable and preparation method thereof - Google Patents

A kind of fire-retardant fireproof the coat layer of power cable and preparation method thereof Download PDF

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CN110491587A
CN110491587A CN201910601728.2A CN201910601728A CN110491587A CN 110491587 A CN110491587 A CN 110491587A CN 201910601728 A CN201910601728 A CN 201910601728A CN 110491587 A CN110491587 A CN 110491587A
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rubber
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layer
quartz
parts
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CN110491587B (en
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周蕾
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Hefei paiteng Information Technology Co.,Ltd.
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Anhui Vanbo Photoelectric Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • 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
    • H01B13/148—Selection of the insulating material therefor
    • 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
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • 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
    • H01B7/187—Sheaths comprising extruded non-metallic layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • 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
    • 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
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • 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
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/428—Heat conduction
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

The invention discloses a kind of fire-retardant fireproof the coat layer of power cable and preparation method thereof, it from the inside to the outside successively include insulating layer, rubber layer I and rubber layer II, rubber layer II side wall is provided with multiple air holes, and preparation method includes following steps, the preparation of (1) virgin rubber；(2) the granule modified processing of quartz；(3) preparation of rubber mass II；(4) preparation of rubber mass I；(5) preparation of restrictive coating.It is divided into three-decker, middle layer is rubber layer I, it include lignin in additive, lignin is as a kind of New Type of Rubber Reinforcer using natural emulsion and butadiene-styrene rubber as virgin rubber, there is good humidification to butadiene-styrene rubber, tensile strength also has obvious raising, and the surface of quartz particle is adsorbed on by Silane coupling agent KH550, improves the associativity of quartz and rubber material, the binding force between quartz and rubber is improved, keeps the combination of quartz particle stronger.

Description

A kind of fire-retardant fireproof the coat layer of power cable and preparation method thereof
Technical field
The present invention relates to the technical field of communication cable more particularly to a kind of fire-retardant fireproof the coat layer of power cable and its preparation sides Method.
Background technique
Restrictive coating with retardant cables generally has the characteristics that following two: high-cooling property and itself incombustibility, electricity Cable sheath is generally made of rubber material, and rubber material has toughness and elasticity, under repeated bending, the side of rubber Wall will not be cracked, is the ideal material of cable cover(ing), adds inorganic powder in rubber material used in cable cover(ing), leads to The incombustibility for crossing inorganic powder improves the anti-flammability of the coat layer of power cable, has advanced scientific meaning, not only increases rubber The anti-flammability of material cable cover(ing), while reducing the dosage of rubber and improving the wearability of cable cover(ing).But cable cover(ing) For rubber after adding particles of inorganic material, the binding force between rubber and particles of inorganic material is poor, in the case where cable repeats to bend, Restrictive coating is easy to appear crackle, and cable is caused to lose protective action too early.
Therefore, present invention mainly solves due to cable rubber sheath layer in order to improve flame-retarding characteristic addition particles of inorganic material, The problem of causing cable cover(ing) binding force poor, being easy premature failure.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of fire-retardant fireproof the coat layer of power cable and preparation method thereof, mainly It solves to cause cable cover(ing) binding force poor in order to improve flame-retarding characteristic addition particles of inorganic material due to cable rubber sheath layer, hold The problem of easy premature failure.
The present invention is realized by following technological means solves above-mentioned technical problem:
A kind of fire-retardant fireproof the coat layer of power cable,
It from the inside to the outside successively include that insulating layer, rubber layer I and rubber layer II, the rubber layer II side wall are provided with multiple Stomata.
A kind of preparation method of fire-retardant fireproof the coat layer of power cable, including following steps,
(1) preparation of virgin rubber: as unit of parts by weight, 150~200 parts of blended natural rubber latex and butadiene-styrene rubber 60~ 100 parts, it is logical 3~5 times thin to be put into open mill, is then added in mixer, 75 DEG C of 3~4min of mixing of smelting temperature；
(2) the granule modified processing of quartz: the bulk that coarse powder is broken into 5~10cm is carried out to quartz, then ball mill essence It is 500~800 μm that milling, which is broken to granularity, be put into 90 DEG C of constant temperature stirring 3 in the NaOH solution that concentration is 0.1~0.2g/ml~ 4h pulls washing out to neutrality and dries, Silane coupling agent KH550 is dissolved in toluene solution, modification liquid is made, by aforementioned quartz Stone particle is put into modification liquid, 3~4h of isothermal reaction under the conditions of 90 DEG C, is filtered and dry after reaction, is obtained modification Quartz particle；
(3) preparation of rubber mass II: as unit of parts by weight, by (1) obtains 160~200 parts of virgin rubber sequentially add it is hard 3~6 parts of 2~4 parts of resin acid, ZnO mixing 1min are added 20~30 parts and 30~50 parts of lignin of white carbon black, are kneaded 1min, add Enter 0.5~1.5 part of Vulcanization accelerator TMTD and 40~60 parts of mixing 1min of phenolic resin, obtains mixing glue, mixing glue is put into mill Machine is thin 6~8 times logical, and 5~10 parts of sulphur powder, after mixing evenly, 150 DEG C of sulphur of conditions of vulcanization are added in the strong rubber for obtaining plus melting Change and place for 24 hours, obtains rubber mass II；
(4) preparation of rubber mass I: by (3) resulting reinforcement rubber-heating to molten condition, by the weight of 10:15:0.5 Than sequentially adding modified quartz particle and sulphur powder obtained by (2), after mixing evenly, 150 DEG C of conditions of vulcanization vulcanizations obtain rubber Expect I；
(5) preparation of restrictive coating: polyvinyl resin, rubber mass I and rubber mass II are heated to molten condition respectively, will be melted The polyvinyl resin melted, which is put into extrusion molding in extruding machine, becomes insulating layer in the surface of cable core, with a thickness of 1~2mm, cooled and solidified, Then rubber layer I, 3~6mm of thickness are become in the surface of insulating layer to rubber mass I extrusion molding, stands cooled and solidified, will finally melts The rubber mass II extrusion molding melted becomes rubber layer I, 2~4mm of thickness on the surface rubber layer I, cooled and solidified is stood, finally in rubber It is completed after the mechanical punching of the surface layer II.
The present invention has the advantages that being divided into three-decker, wherein the insulating layer of internal layer primarily serves the work of protection cable core With, while insulation prevents from leaking electricity, middle layer is rubber layer I, and it is original with natural emulsion and butadiene-styrene rubber that main material, which is rubber, Glue, addition additive are made, and include lignin in additive, for reducing the usage amount of white carbon black, while lignin is as one Kind New Type of Rubber Reinforcer has good humidification to butadiene-styrene rubber, and tensile strength also has obvious raising, due to wood Quality can be uniformly dispersed among natural rubber, forms inierpeneirating network structure, has as reinforcing agent to oil-filled type butadiene-styrene rubber Excellent humidification.
Moreover, as flame retardant type cable, the inorganic quartz particle of inorganic states, granularity be also added in rubber layer I At 500~800 μm, quickly heat absorption and heat transfer effect are played, prevents cable own temperature excessively high, due to quartz particle In the presence of, the incombustibility of rubber layer I is substantially increased, but the associativity of quartz particle and rubber is poor, it is repeatedly curved in cable After folding, the junction of rubber and quartz particle is cracked, will lead to the short problem of cable service life for a long time.Pass through silane Coupling agent KH550 is adsorbed on the surface of quartz particle, improves the associativity of quartz and rubber material, improves quartz Binding force between stone and rubber keeps the combination of quartz particle stronger.
Outermost rubber layer II mainly wraps up rubber layer I, and rubber layer II opens up air hole to improve thermal diffusivity.
Detailed description of the invention
Fig. 1: cross section structure schematic diagram of the present invention.
Fig. 2: structure of the invention figure.
In figure, insulating layer 1, rubber layer I 2 and rubber layer II 3, air hole 31.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Up, down, left, right, before and after herein show standard both with respect to Fig. 1.
Embodiment:
A kind of fire-retardant fireproof the coat layer of power cable,
It from the inside to the outside successively include insulating layer 1, rubber layer I 2 and rubber layer II 3,3 side wall of the rubber layer II setting There are multiple air holes 31.
A kind of preparation method of fire-retardant fireproof the coat layer of power cable, including following steps,
(1) preparation of virgin rubber: with weight (Kg) for unit, blended natural rubber latex 160Kg and butadiene-styrene rubber 80Kg, It is thin 4 times logical to be put into open mill, is then added in mixer, 75 DEG C of mixing 3min of smelting temperature；
Heveatex in the present invention, pH are 8~9, density 0.94g/ml, solid content 62%.Butylbenzene of the invention Rubber is to rush oil type butadiene-styrene rubber.
(2) the granule modified processing of quartz: the bulk that coarse powder is broken into 5~10cm is carried out to quartz, then ball mill essence It is 500~800 μm that milling, which is broken to granularity, is put into 90 DEG C of constant temperature in the NaOH solution that concentration is 0.1g/ml and stirs 3h, pulls out and wash It washs to neutrality and dries, Silane coupling agent KH550 is dissolved in toluene solution, modification liquid is made, aforementioned quartz particle is put Enter in modification liquid, isothermal reaction 3h under the conditions of 90 DEG C, filters after reaction and dry, obtain modified quartz particle.
In the present invention, for modified quartz particle, Silane coupling agent KH550 is adsorbed on the table of quartz particle Face increases the steric hindrance of mixed liquor, reduces particle on the one hand since the macromolecular chain of quartz surface coupling agent acts on Between collision probability, improve the dispersion suspension of quartz particle, on the other hand, modified quartz current potential absolute value increases Greatly, intergranular electrostatic repulsion is increased, dispersion suspension of the quartz in rubber solutions is improved, through silane coupling agent The quartz of KH550 processing and the associativity of rubber material make moderate progress, and improve the binding force between quartz and rubber, silicon The amino (- NH of alkane coupling agent KH5502) can with there is group chemical to react between rubber, there are the combinations of chemical bond, instead of list One mechanical engagement formula bonding effect, thus keep the combination of quartz particle stronger, cable can be repeated as many times bending In the case of, the phenomenon that rubber layer I filled with quartz particle is not in crackle.
(3) with weight (Kg) for unit, the virgin rubber 180Kg that (1) obtains the preparation of rubber mass II: is sequentially added into tristearin Sour 3Kg, ZnO 3Kg are kneaded 1min, and white carbon black 25Kg and lignin 38Kg is added, and are kneaded 1min, and Vulcanization accelerator TMTD is added 0.5Kg and phenolic resin 50Kg are kneaded 1min, obtain mixing glue, and mixing glue is put into open mill is thin 7 times logical, obtain plus melting it is strong Sulphur powder 8Kg is added in rubber, and after mixing evenly, 150 DEG C of conditions of vulcanization vulcanize and place for 24 hours, obtains rubber mass II；
In the present invention, lignin has good humidification as a kind of New Type of Rubber Reinforcer, to butadiene-styrene rubber, draws Stretching intensity also has obvious raising.This is because lignin can be uniformly dispersed among natural rubber, interpenetrating networks knot is formed Structure, and natural rubber and butadiene-styrene rubber have good compatibility, obtain a kind of lignin/natural gum compound adhesive by co-precipitation Grain, substantially increases dispersibility of the lignin in mixed rubber, therefore have to oil-filled type butadiene-styrene rubber as reinforcing agent There is excellent humidification.
Lignin in the present invention is dark brown powder, and granularity is lower than 120 mesh, molecular weight 2000~ 100000g/mol, carbon content are 60% or so；
(4) preparation of rubber mass I: by (3) resulting reinforcement rubber-heating to molten condition, by the weight of 10:15:0.5 Than sequentially adding modified quartz particle and sulphur powder obtained by (2), after mixing evenly, 150 DEG C of conditions of vulcanization vulcanizations obtain rubber Expect I；
Intermediate material rubber layer I in the present invention is mainly made of rubber mass I, and modified quartz is added in rubber mass I Stone particle, has preferably fire-retardant hot, and quartz particle is in modified by Silane coupling agent KH550, with rubber parent It is more preferable with property, the binding force of quartz particles and rubber is improved, makes cable after multiple bending, rubber and quartz Be not in crackle between grain, improve the service life of cable, due to the addition of quartz, rubber can be prevented in open fire state Lower burning, plays good flame retardant effect.
(5) preparation of restrictive coating: polyvinyl resin, rubber mass I and rubber mass II are heated to molten condition respectively, will be melted The polyvinyl resin melted, which is put into extrusion molding in extruding machine, becomes insulating layer in the surface of cable core, with a thickness of 1.5mm, cooled and solidified, so Rubber layer I, thickness 5mm are become in the surface of insulating layer to rubber mass I extrusion molding afterwards, cooled and solidified is stood, finally by the rubber of melting Sizing material II extrusion molding becomes rubber layer I, thickness 2mm on the surface rubber layer I, cooled and solidified is stood, finally on the surface rubber layer II It is completed after mechanical punching.
It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims (2)

1. a kind of fire-retardant fireproof the coat layer of power cable, it is characterised in that:
It from the inside to the outside successively include insulating layer, rubber layer I and rubber layer II, the rubber layer II side wall is provided with multiple ventilative Hole.
2. a kind of preparation method of fire-retardant fireproof the coat layer of power cable, it is characterised in that: including following steps,
(1) preparation of virgin rubber: as unit of parts by weight, 150~200 parts of blended natural rubber latex and butadiene-styrene rubber 60~100 Part, it is logical 3~5 times thin to be put into open mill, is then added in mixer, 75 DEG C of 3~4min of mixing of smelting temperature；
(2) the granule modified processing of quartz: the bulk that coarse powder is broken into 5~10cm is carried out to quartz, then ball mill refines powder Being broken to granularity is 500~800 μm, is put into 90 DEG C of constant temperature in the NaOH solution that concentration is 0.1~0.2g/ml and stirs 3~4h, pulls out Washing is to neutrality and dries, and Silane coupling agent KH550 is dissolved in toluene solution, modification liquid is made, aforementioned quartz particle is put Enter in modification liquid, 3~4h of isothermal reaction under the conditions of 90 DEG C, filters after reaction and dry, obtain modified quartz Grain；
(3) preparation of rubber mass II: as unit of parts by weight, stearic acid 2 is sequentially added for 160~200 parts of virgin rubber for (1) obtains ~4 parts, ZnO3~6 part mixing 1min, are added 20~30 parts and 30~50 parts of lignin of white carbon black, are kneaded 1min, promotion is added Agent TMTD0.5~1.5 part and 40~60 parts of mixings 1min of phenolic resin, obtain mixing glue, by mixing glue be put into open mill it is thin lead to 6~ It 8 times, obtains plus the strong rubber of melting, 5~10 parts of sulphur powder of addition, after mixing evenly, 150 DEG C of conditions of vulcanization vulcanizations is simultaneously placed For 24 hours, rubber mass II is obtained；
(4) preparation of rubber mass I: by (3) resulting reinforcement rubber-heating to molten condition, by 10:15:0.5 weight ratio according to Modified quartz particle and sulphur powder obtained by secondary addition (2), after mixing evenly, 150 DEG C of conditions of vulcanization vulcanizations obtain rubber mass I；
(5) preparation of restrictive coating: polyvinyl resin, rubber mass I and rubber mass II are heated to molten condition respectively, by melting Polyvinyl resin, which is put into extrusion molding in extruding machine, becomes insulating layer in the surface of cable core, with a thickness of 1~2mm, cooled and solidified, then To rubber mass I extrusion molding in the surface of insulating layer, become rubber layer I, 3~6mm of thickness, cooled and solidified is stood, finally by melting Rubber mass II extrusion molding becomes rubber layer I, 2~4mm of thickness on the surface rubber layer I, cooled and solidified is stood, finally in rubber layer II It is completed after the mechanical punching of surface.
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CN112500693A (en) * 2020-11-24 2021-03-16 安徽康泰电气有限公司 Low-smoke flame-retardant high-strength high-oil-resistance cable sheath material and preparation method thereof
CN113345634A (en) * 2021-01-26 2021-09-03 陈跃超 Special cable for brick machine
CN114835960A (en) * 2022-06-24 2022-08-02 深圳中缆电缆集团有限公司 All-weather halogen-free flame-retardant rat-proof and termite-proof wire cable

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CN202855392U (en) * 2012-08-24 2013-04-03 安徽瑞之星电缆集团有限公司 High flame retardation fireproof power cable
CN105037848A (en) * 2015-07-06 2015-11-11 安徽创宇电力设备有限公司 High-strength flame retardation rubber material for insulator umbrella skirt
CN206331820U (en) * 2017-01-03 2017-07-14 四川自胜机电设备有限责任公司 The fire protection flame retarding wire harness overcoat that a kind of basalt fibre is made
CN107833668A (en) * 2017-12-02 2018-03-23 成都融创智谷科技有限公司 A kind of fire resisting and high flame retardant electric power bayonet type cable
CN207938354U (en) * 2018-03-07 2018-10-02 湖南省酒江电线电缆有限公司 A kind of power cable with heat dissipation performance
CN108933001A (en) * 2018-08-20 2018-12-04 安徽新科电缆集团股份有限公司 A kind of high fire-retardance high temperature-resistant cable
CN109003696A (en) * 2018-08-20 2018-12-14 扬州市诚智自动化装备有限公司 A kind of transformer high-strength highly-conductive type precision copper band

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CN112500693A (en) * 2020-11-24 2021-03-16 安徽康泰电气有限公司 Low-smoke flame-retardant high-strength high-oil-resistance cable sheath material and preparation method thereof
CN113345634A (en) * 2021-01-26 2021-09-03 陈跃超 Special cable for brick machine
CN113345634B (en) * 2021-01-26 2023-03-31 陈跃超 Special cable for brick machine
CN114835960A (en) * 2022-06-24 2022-08-02 深圳中缆电缆集团有限公司 All-weather halogen-free flame-retardant rat-proof and termite-proof wire cable
CN114835960B (en) * 2022-06-24 2023-01-10 深圳中缆电缆集团有限公司 All-weather halogen-free flame-retardant rat-proof and termite-proof wire cable

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