CN107312262A - A kind of preparation method of electric automobile cable oversheath - Google Patents
A kind of preparation method of electric automobile cable oversheath Download PDFInfo
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- CN107312262A CN107312262A CN201710468158.5A CN201710468158A CN107312262A CN 107312262 A CN107312262 A CN 107312262A CN 201710468158 A CN201710468158 A CN 201710468158A CN 107312262 A CN107312262 A CN 107312262A
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- 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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
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- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of preparation method of electric automobile cable oversheath, comprise the following steps：Polyvinyl chloride is heated to molten condition, trioctyl trimellitate (TOTM), Rosa Damascana, Paris white, propionate, octyl epoxy stearate, anti-scorching agent CTP is added and stirs, mediate, granulation obtains the first prefabricated material；Chitosan, glacial acetic acid, water are mixed, heating stirring, cooling adds boric acid, heating stirring, kaolin, fusing urea, nickel nitrate stirring are added, wooden disulfonate acid, dodecyl sodium sulfate stirring, regulation system pH value to neutrality is added, heat up vacuum heat-preserving, filtering, washing, is dried to obtain the second prefabricated material；By silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite antioxidant heating mixed melting, stirring adds the first prefabricated material, the second prefabricated material and continues to stir, melting extrusion, granulation obtains electric automobile cable oversheath.
Description
Technical field
The present invention relates to field of cable technology, more particularly to a kind of preparation method of electric automobile cable oversheath.
Background technology
The common cable used on current electric automobile, relatively simple for structure, the general sheath using pvc material,
It is outer along with being often exposed to but because electric automobile is moved out of doors for a long time, vehicle-mounted pressure and the frictional force ratio of cable are larger,
Cable conductor structural is caused to be damaged, electrical property, the bending property of cable are reduced, and are locally also easy to cause to be damaged, and impaired portion
The shifting slip failure of position conductor ultimately results in the last conductor here of cable and fractureed, so as to cause the reduction of cable security reliability
The problems such as shortening with service life, also have impact on the stability and security of electric automobile whole.How the coat layer of power cable is improved
Crocking resistance, improve resistance to ag(e)ing, increase cable security reliability and service life, as the current technology for needing to solve
Problem.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of preparation of electric automobile cable oversheath
Method, gained electric automobile cable oversheath very high density, with excellent tensile strength, wearability, and with good
Surface and mechanical performance, moreover it is possible to effectively reduce smell, while preparation technology is simple, cost is low.
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1, polyvinyl chloride is heated to molten condition, adds trioctyl trimellitate (TOTM), Rosa Damascana, Paris white, propionic acid
Vinyl acetate, octyl epoxy stearate, anti-scorching agent CTP stir, and mediate, and granulation obtains the first prefabricated material；
S2, by chitosan, glacial acetic acid, water mix, heating stirring, cooling, add boric acid, heating stirring, add kaolin,
Fusing urea, nickel nitrate stirring, add wooden disulfonate acid, dodecyl sodium sulfate stirring, and regulation system pH value to neutrality rises
Warm vacuum heat-preserving, is filtered, and washing is dried to obtain the second prefabricated material；
S3, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite antioxidant heated it is mixed
Melting is closed, stirring adds the first prefabricated material, the second prefabricated material and continues to stir, melting extrusion, granulation obtains electric automobile cable use
Oversheath.
Preferably, in S1, kneading time is 30-50min.
Preferably, in S1, polyvinyl chloride, trioctyl trimellitate (TOTM), Rosa Damascana, Paris white, propionate, epoxy
Octyl stearate, the weight ratio of anti-scorching agent CTP are 80-100：1-2：1-2：1-4：1-2：1-2：0.5-1.2.
Preferably, in S2, chitosan, glacial acetic acid, water are mixed, 80-120 DEG C of stirring 30-80min is warming up to, cools down, plus
Enter boric acid, be warming up to 85-95 DEG C of stirring 5-15min, add kaolin, fusing urea, nickel nitrate stirring 20-40min, stirring speed
Spend for 2100-2500r/min, the wooden disulfonate acid of addition, dodecyl sodium sulfate stirring 50-100min, regulation system pH value
To neutral, 400-500 DEG C of vacuum heat-preserving 10-20min is warming up to, is filtered, washing is dried to obtain the second prefabricated material.
Preferably, in S2,20-40 parts of chitosans, 2-4 parts of glacial acetic acids, 150-200 parts of water are mixed by weight, heating
To 80-120 DEG C of stirring 30-80min, cooling adds 20-40 parts of boric acid, is warming up to 85-95 DEG C of stirring 5-15min, adds 40-
60 parts of kaolin, 4-8 parts of fusing ureas, 2-4 parts of nickel nitrate stirring 20-40min, mixing speed is 2100-2500r/min, plus
Enter 2-4 parts of wooden disulfonate acids, 1-3 parts of dodecyl sodium sulfate stirring 50-100min, regulation system pH value to neutrality, heating
To 400-500 DEG C of vacuum heat-preserving 10-20min, filter, washing is dried to obtain the second prefabricated material.
Preferably, in S3, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite ester are resisted
Mixed melting is heated in oxygen agent, stirs 20-40min, is added the first prefabricated material, the second prefabricated material and is continued to stir 5-15min, melting is squeezed
Go out, granulation obtains electric automobile cable oversheath.
Preferably, in S3, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite ester antioxygen
Agent, the first prefabricated material, the weight ratio of the second prefabricated material are 20-40：1-2：2-4：1-3：1-3：60-100：2-4.
The present invention is compounded using polyvinyl chloride with silicone master batch, is mutually wound between macromolecular chain, coordinates the second prefabricated material
Effect, makes very high density of the present invention, wearability is good, and resistance to tearing can be extremely excellent；In the second prefabricated material, the hydroxyl on chitosan
Base generates complex compound with boric acid, is combined with fusing urea, kaolin, nickel nitrate, in wooden disulfonate acid, dodecyl sodium sulfate
Cooperation under, be incubated, be not only uniformly dispersed each other by vacuum high-temperature, and good microstructure can be formed, wearability is good,
Hardness is high；And silicone master batch is under ethylene propylene diene rubber, the complex role of aluminate coupling agent, the dispersiveness with the second prefabricated material
It is fabulous, polymer cohesive force can be effectively reduced, the dispersing uniformity in the second prefabricated material is fabulous, and fluidity of molten is excellent, thing
It is well mixed between material, extreme hardness after melt granulation, wearability is good, and resistance to tearing can be further enhanced.
The present invention, which is used for electric automobile cable, can effectively reduce smell, and with excellent tensile strength, wearability, go back
With good surface and mechanical performance, while preparation technology is simple, cost is low.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1, polyvinyl chloride is heated to molten condition, adds trioctyl trimellitate (TOTM), Rosa Damascana, Paris white, propionic acid
Vinyl acetate, octyl epoxy stearate, anti-scorching agent CTP stir, and mediate, and granulation obtains the first prefabricated material；
S2, by chitosan, glacial acetic acid, water mix, heating stirring, cooling, add boric acid, heating stirring, add kaolin,
Fusing urea, nickel nitrate stirring, add wooden disulfonate acid, dodecyl sodium sulfate stirring, and regulation system pH value to neutrality rises
Warm vacuum heat-preserving, is filtered, and washing is dried to obtain the second prefabricated material；
S3, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite antioxidant heated it is mixed
Melting is closed, stirring adds the first prefabricated material, the second prefabricated material and continues to stir, melting extrusion, granulation obtains electric automobile cable use
Oversheath.
Embodiment 2
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1,80 parts of polyvinyl chloride are heated to molten condition by weight, add 2 portions of trioctyl trimellitate (TOTM)s, 1 portion of rose
Essential oil, 4 parts of Paris whites, 1 part of propionate, 2 parts of octyl epoxy stearates, 0.5 part of anti-scorching agent CTP stir, and mediate
50min, granulation obtains the first prefabricated material；
S2,20 parts of chitosans, 4 parts of glacial acetic acids, 150 parts of water are mixed by weight, are warming up to 120 DEG C of stirring 30min, it is cold
But, 40 parts of boric acid are added, 85 DEG C of stirring 15min are warming up to, 40 parts of kaolin, 8 parts of fusing ureas, 2 parts of nickel nitrate stirrings are added
40min, mixing speed is 2100r/min, adds 4 parts of wooden disulfonate acids, 1 part of dodecyl sodium sulfate stirring 100min, adjusts
System pH is saved to neutrality, 400 DEG C of vacuum heat-preserving 20min are warming up to, filtered, washing is dried to obtain the second prefabricated material；
S3,20 parts of silicone master batch, 2 parts of ammonium pyrophosphates, 2 parts of ethylene propylene diene rubbers, 3 parts of Aluminates are coupled by weight
Agent, 1 part of phosphite antioxidant heating mixed melting, stir 40min, add 60 part of first prefabricated material, 4 part of second prefabricated material after
Continuous stirring 5min, melting extrusion, granulation obtains electric automobile cable oversheath.
Embodiment 3
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1,100 parts of polyvinyl chloride are heated to molten condition by weight, add 1 part of trioctyl trimellitate (TOTM), 2 parts of roses
Rare essential oil, 1 part of Paris white, 2 parts of propionates, 1 part of octyl epoxy stearate, 1.2 parts of anti-scorching agent CTPs stir, and pinch
30min is closed, granulation obtains the first prefabricated material；
S2,40 parts of chitosans, 2 parts of glacial acetic acids, 200 parts of water are mixed by weight, are warming up to 80 DEG C of stirring 80min, it is cold
But, 20 parts of boric acid are added, 95 DEG C of stirring 5min are warming up to, 60 parts of kaolin, 4 parts of fusing ureas, 4 parts of nickel nitrate stirrings are added
20min, mixing speed is 2500r/min, adds 2 parts of wooden disulfonate acids, 3 parts of dodecyl sodium sulfate stirring 50min, regulation
System pH is warming up to 500 DEG C of vacuum heat-preserving 10min to neutrality, filters, and washing is dried to obtain the second prefabricated material；
S3,40 parts of silicone master batch, 1 part of ammonium pyrophosphate, 4 parts of ethylene propylene diene rubbers, 1 part of Aluminate are coupled by weight
Agent, 3 parts of phosphite antioxidant heating mixed meltings, stir 20min, add 100 part of first prefabricated material, 2 part of second prefabricated material
Continue to stir 15min, melting extrusion, granulation obtains electric automobile cable oversheath.
Embodiment 4
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1,85 parts of polyvinyl chloride are heated to molten condition by weight, add 1.8 parts of trioctyl trimellitate (TOTM)s, 1.3 parts
Rosa Damascana, 3 parts of Paris whites, 1.4 parts of propionates, 1.6 parts of octyl epoxy stearates, 0.6 part of anti-scorching agent CTP stirring are equal
It is even, 45min is mediated, granulation obtains the first prefabricated material；
S2,25 parts of chitosans, 3.5 parts of glacial acetic acids, 160 parts of water are mixed by weight, are warming up to 110 DEG C of stirring 40min,
Cooling, adds 35 parts of boric acid, is warming up to 88 DEG C of stirring 12min, adds 45 parts of kaolin, 7 parts of fusing ureas, 2.5 parts of nickel nitrates
35min is stirred, mixing speed is 2200r/min, add 3.5 parts of wooden disulfonate acids, 1.5 parts of dodecyl sodium sulfate stirrings
80min, regulation system pH value is warming up to 420 DEG C of vacuum heat-preserving 16min to neutrality, filters, and washing is dried to obtain second prefabricated
Material；
S3, by weight by 25 parts of silicone master batch, 1.7 parts of ammonium pyrophosphates, 2.5 parts of ethylene propylene diene rubbers, 2.5 parts of Aluminates
Coupling agent, 1.5 parts of phosphite antioxidants heating mixed meltings, stir 35min, add 70 part of first prefabricated material, 3.5 part second
Prefabricated material continues to stir 8min, and melting extrusion, granulation obtains electric automobile cable oversheath.
Embodiment 5
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1,95 parts of polyvinyl chloride are heated to molten condition by weight, add 1.2 parts of trioctyl trimellitate (TOTM)s, 1.7 parts
Rosa Damascana, 2 parts of Paris whites, 1.6 parts of propionates, 1.2 parts of octyl epoxy stearates, 1 part of anti-scorching agent CTP stirring are equal
It is even, 35min is mediated, granulation obtains the first prefabricated material；
S2,35 parts of chitosans, 2.5 parts of glacial acetic acids, 180 parts of water are mixed by weight, are warming up to 90 DEG C of stirring 60min,
Cooling, adds 25 parts of boric acid, is warming up to 92 DEG C of stirring 8min, adds 55 parts of kaolin, 5 parts of fusing ureas, 3.5 parts of nickel nitrates and stir
25min is mixed, mixing speed is 2400r/min, add 2.5 parts of wooden disulfonate acids, 2.5 parts of dodecyl sodium sulfate stirrings
60min, regulation system pH value is warming up to 480 DEG C of vacuum heat-preserving 12min to neutrality, filters, and washing is dried to obtain second prefabricated
Material；
S3, by weight by 35 parts of silicone master batch, 1.3 parts of ammonium pyrophosphates, 3.5 parts of ethylene propylene diene rubbers, 1.5 parts of Aluminates
Coupling agent, 2.5 parts of phosphite antioxidants heating mixed meltings, stir 25min, add 90 part of first prefabricated material, 2.5 part second
Prefabricated material continues to stir 12min, and melting extrusion, granulation obtains electric automobile cable oversheath.
Embodiment 6
A kind of preparation method of electric automobile cable oversheath proposed by the present invention, comprises the following steps：
S1,90 parts of polyvinyl chloride are heated to molten condition by weight, add 1.5 parts of trioctyl trimellitate (TOTM)s, 1.5 parts
Rosa Damascana, 2.5 parts of Paris whites, 1.5 parts of propionates, 1.4 parts of octyl epoxy stearates, 0.8 part of anti-scorching agent CTP stirring
Uniformly, 40min is mediated, granulation obtains the first prefabricated material；
S2,30 parts of chitosans, 3 parts of glacial acetic acids, 170 parts of water are mixed by weight, are warming up to 100 DEG C of stirring 50min, it is cold
But, 30 parts of boric acid are added, 90 DEG C of stirring 10min are warming up to, 50 parts of kaolin, 6 parts of fusing ureas, 3 parts of nickel nitrate stirrings are added
30min, mixing speed is 2300r/min, adds 3 parts of wooden disulfonate acids, 2 parts of dodecyl sodium sulfate stirring 70min, regulation
System pH is warming up to 450 DEG C of vacuum heat-preserving 14min to neutrality, filters, and washing is dried to obtain the second prefabricated material；
S3,30 parts of silicone master batch, 1.5 parts of ammonium pyrophosphates, 3 parts of ethylene propylene diene rubbers, 2 parts of Aluminates are coupled by weight
Agent, 2 parts of phosphite antioxidants heating mixed meltings, stir 30min, add 80 part of first prefabricated material, 3 part of second prefabricated material after
Continuous stirring 10min, melting extrusion, granulation obtains electric automobile cable oversheath.
Performance test is carried out with oversheath to the gained electric automobile cable of the embodiment of the present invention 6, its result is as follows：
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of preparation method of electric automobile cable oversheath, it is characterised in that comprise the following steps：
S1, polyvinyl chloride is heated to molten condition, adds trioctyl trimellitate (TOTM), Rosa Damascana, Paris white, vinyl propionate
Ester, octyl epoxy stearate, anti-scorching agent CTP stir, and mediate, and granulation obtains the first prefabricated material；
S2, by chitosan, glacial acetic acid, water mix, heating stirring, cooling, add boric acid, heating stirring, add kaolin, melting
Urea, nickel nitrate stirring, add wooden disulfonate acid, dodecyl sodium sulfate stirring, and regulation system pH value to neutrality, heating is true
Sky insulation, is filtered, and washing is dried to obtain the second prefabricated material；
It is S3, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite antioxidant heating mixing is molten
Melt, stir, add the first prefabricated material, the second prefabricated material and continue to stir, melting extrusion, granulation obtains electric automobile cable with outer shield
Set.
2. the preparation method of electric automobile cable oversheath according to claim 1, it is characterised in that in S1, during kneading
Between be 30-50min.
3. the preparation method of electric automobile cable oversheath according to claim 1 or claim 2, it is characterised in that in S1, polychlorostyrene
Ethene, trioctyl trimellitate (TOTM), Rosa Damascana, Paris white, propionate, octyl epoxy stearate, the weight of anti-scorching agent CTP
Amount is than being 80-100：1-2：1-2：1-4：1-2：1-2：0.5-1.2.
4. according to the preparation method of any one of the claim 1-3 electric automobile cable oversheaths, it is characterised in that S2
In, chitosan, glacial acetic acid, water are mixed, 80-120 DEG C of stirring 30-80min is warming up to, cooling adds boric acid, is warming up to 85-
95 DEG C of stirring 5-15min, add kaolin, fusing urea, nickel nitrate stirring 20-40min, mixing speed is 2100-2500r/
Min, adds wooden disulfonate acid, dodecyl sodium sulfate stirring 50-100min, and regulation system pH value is warming up to neutrality
400-500 DEG C of vacuum heat-preserving 10-20min, is filtered, and washing is dried to obtain the second prefabricated material.
5. according to the preparation method of any one of the claim 1-4 electric automobile cable oversheaths, it is characterised in that S2
In, 20-40 parts of chitosans, 2-4 parts of glacial acetic acids, 150-200 parts of water are mixed by weight, 80-120 DEG C of stirring 30- is warming up to
80min, cooling adds 20-40 part boric acid, is warming up to 85-95 DEG C of stirring 5-15min, add 40-60 parts of kaolin, 4-8 parts it is molten
Melt urea, 2-4 parts of nickel nitrate stirring 20-40min, mixing speed is 2100-2500r/min, adds 2-4 parts of xylonic acid sulfonic acid
Sodium, 1-3 parts of dodecyl sodium sulfates stir 50-100min, and regulation system pH value is warming up to 400-500 DEG C of vacuum guarantor to neutrality
Warm 10-20min, is filtered, and washing is dried to obtain the second prefabricated material.
6. according to the preparation method of any one of the claim 1-5 electric automobile cable oversheaths, it is characterised in that S3
In, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite antioxidant are heated into mixed melting,
20-40min is stirred, the first prefabricated material, the second prefabricated material is added and continues to stir 5-15min, melting extrusion, granulation obtains electronic vapour
Car cable oversheath.
7. according to the preparation method of any one of the claim 1-6 electric automobile cable oversheaths, it is characterised in that S3
In, silicone master batch, ammonium pyrophosphate, ethylene propylene diene rubber, aluminate coupling agent, phosphite antioxidant, the first prefabricated material, second
The weight ratio of prefabricated material is 20-40：1-2：2-4：1-3：1-3：60-100：2-4.
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| CN201710468158.5A CN107312262A (en) | 2017-06-20 | 2017-06-20 | A kind of preparation method of electric automobile cable oversheath |
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| CN201710468158.5A CN107312262A (en) | 2017-06-20 | 2017-06-20 | A kind of preparation method of electric automobile cable oversheath |
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Cited By (1)
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| CN110349706A (en) * | 2018-09-28 | 2019-10-18 | 昆明昆宝电线电缆制造有限公司 | A kind of production method of the direct current rail transportation cable of polypropylene insulation |
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| CN110349706A (en) * | 2018-09-28 | 2019-10-18 | 昆明昆宝电线电缆制造有限公司 | A kind of production method of the direct current rail transportation cable of polypropylene insulation |
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Application publication date: 20171103 |
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