CN109524154A - A kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturing method - Google Patents
A kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturing method Download PDFInfo
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- CN109524154A CN109524154A CN201811177156.1A CN201811177156A CN109524154A CN 109524154 A CN109524154 A CN 109524154A CN 201811177156 A CN201811177156 A CN 201811177156A CN 109524154 A CN109524154 A CN 109524154A
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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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/145—Pretreatment or after-treatment
-
- 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
- H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/186—Sheaths comprising longitudinal lapped 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
- H01B7/18—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
- H01B7/18—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
- 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2813—Protection against damage caused by electrical, chemical or water tree deterioration
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Ropes Or Cables (AREA)
Abstract
The present invention provides a kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturing method, the copper wire with center reinforcing fibre rope including setting gradually from the inside to the outside twists flexible conductor, high-strength nylon belting layer, ethylene propylene rubber insulated layer and urethane jacket layer again, the center reinforcing fibre rope is woven using aramid fiber yarn or ultra high molecular weight polyethylene fiber braiding, and the copper wire twists again is overlapped wrapped high-strength nylon band formation high-strength nylon belting layer outside flexible conductor.Have many advantages, such as that high-tensile, super-high wear-resistant and tear resistance, low temperature resistant, antifungi, resistance to various greases and soda acid chemicals, radiation resistance, fire-retardant, short-time overload capacity is strong, the service life is long, performance is better than traditional welding machine cable, it is particularly suitable for being used in various adverse circumstances, is the substitute products of traditional welding machine cable under particular surroundings.
Description
Technical field
The present invention relates to field of cables, in particular to a kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturers
Method.
Background technique
Welding machine cable is also electrode holder line, is the private cable for flanking line suitable for electric welding machine secondary and connecting electrode holders,
Now execute standard GB/T 5013.6-2008.Welding machine cable is under conditions of low-voltage (ceiling voltage 200V) high current
Work, cable allow operating temperature to be no more than 65 DEG C for a long time.Cable continually moves, and turns round and requires soft bending property around with release
It is good.In release vulnerable to the scraping of sharp steel component, wipe, therefore require that cable is anti-tear, the good mechanical properties such as wear-resisting.Use environment
The requirements such as complicated condition such as solarization, water boiling, contact muddy water, machine oil, soda acid liquid have certain against weather and oil resistant, solvent resistant
Property.The construction of cable is that single line core is stranding into again using multiply soft copper conducting wire, film-insulated using heat-resistant polyester outside conductor wire core
With insulation and sheath made of wrapped outermost layer rubber as protective layer.The present invention is to be different from traditional welding machine cable, is adopted
With conductor polyurethane jacket is reinforced, there is high-tensile, super-high wear-resistant and tear resistance, low temperature resistant, antifungi, resistance to various
Grease and soda acid chemicals, radiation resistance, the advantages that fire-retardant, short-time overload capacity is strong, the service life is long, performance are electromechanical better than tradition electric welding
Cable is particularly suitable for being used in various adverse circumstances, is the substitute products of traditional welding machine cable under particular surroundings.
Summary of the invention
The deficiency being for existing welding machine cable product of the invention provides a kind of reinforcement conductor polyurethane jacket electricity
Welding cable and its manufacturing method, high-performance, the service life is long, is suitble to various adverse circumstances.
Technical solution of the present invention:
A kind of reinforcement conductor polyurethane jacket welding machine cable, including the band center reinforcing fibre set gradually from the inside to the outside
The copper wire of rope twists flexible conductor, high-strength nylon belting layer, ethylene propylene rubber insulated layer and urethane jacket layer again, and the center adds
Strong cordage is woven using aramid fiber yarn or ultra high molecular weight polyethylene fiber braiding, the copper wire twist again be overlapped outside flexible conductor it is wrapped
High-strength nylon band forms high-strength nylon belting layer.
The ethylene propylene rubber insulated layer uses IE4 type EP rubbers.
The urethane jacket layer uses domestic polyether-type environmentally-friendly flame retardant thermoplastic polyurethane elastomer.
A kind of manufacturing method for reinforcing conductor polyurethane jacket welding machine cable, comprising the following specific steps
Synnema conductor uses the cage stranding machine process soft copper conductor with back twist function, and reinforcing fibre rope is located at when process
Conductor central location, process outermost layer pitch ratio are not more than 12 times, and it is almost the same to control each draw drum tension, reinforce conductor direct current
Resistance meets GB/T 5013.6-2008 requirement；
It is ethylene propylene rubber insulated that insulation meets IE4 type specified in GB/T 5013.1-2008, by even sulphur production line by squeezing
Machine passes through the progress continuous vulcanization of continuous vulcanization pipeline after squeezing out insulation out；
Polyurethane jacket squeezes out, and common extruding machine is squeezed out using crowded tubular type or half tubular molding tool, and finished cable passes through cold
But molding is received on take-up reel by admission machine.
The insulation extrudes 20 meters/min of linear velocity, and even the air pressure of sulphur pipeline is not less than 1.2Mpa, continuous vulcanization extruder
Each section controls temperature: each section 40 DEG C -90 DEG C of extruder, 90 DEG C -110 DEG C of head die orifice, extruding rear core and carries out online 15kV
Working-frequency voltage test.
The polyurethane jacket is completed on 90 type extruding machines, and using tubular molding tool, 9 meters/min of extruded velocity is squeezed out
Machine each section controls temperature: each section 80 DEG C -150 DEG C of extruder, 150 DEG C -160 DEG C of head die orifice, squeezing out nominal jacket thickness
1.3mm, extrudes rear diameter control range 10.2-10.5mm, and finished cable is received in take-up reel by admission machine by being cooled and shaped
On, finished cable carries out 1kV Inundate Voltage Experiment.
Compared with prior art, the beneficial effects of the present invention are:
1, conductor center is equipped with reinforcing fibre rope, and cordage is woven using aramid fiber yarn or ultra high molecular weight polyethylene fiber is compiled
It knits, there is high pull-off force, impact resistance, flexibility height, resist bending, high-low temperature resistant, fire-retardant, under conditions of equivalent weight, at least
For 5 dual intensities of steel wire, 2.5 dual intensities of E level fiberglass.Such as 2 millimeters or so cordage can bear 300 kilograms and break
Power, the addition of reinforcing fibre enhance the tensile strength of welding machine cable, are overlapped wrapped high-strength nylon band into one outside conductor
Step increases intensity, and cable service life is doubled and redoubled.
2, insulation uses IE4 type EP rubbers, guarantees high insulating property, and short-time overload capacity is extremely strong.
3, sheath uses domestic polyether-type environmentally-friendly flame retardant thermoplastic polyurethane elastomer, has super-high wear-resistant, high anti-tensile
Intensity and tearing strength, grease resistance and soda acid chemicals, excellent resistance to low temperature, antifungi, flame-proof environmental protection, soft bendability
Good, radiation resistance, finished sheath intensity is up to 40MPa, and low temperature resistant reachable -60 DEG C, welding machine cable can be in various adverse circumstances
It uses, long service life.
Detailed description of the invention
Fig. 1 is that the present invention reinforces conductor polyurethane jacket welding machine cable cross-sectional structure schematic diagram；
Fig. 2 is production procedure schematic diagram of the present invention.
Figure label respectively indicates, 1- band center reinforcing fibre rope copper flexible conductor, 2- high-strength nylon belting layer, 3- second
Third rubber insulation, 4- urethane jacket layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution:
The present invention reinforce conductor polyurethane jacket welding machine cable structure are as follows: 1, band center reinforcing fibre rope copper flexible conductor 2,
High-strength nylon belting layer 3, ethylene propylene rubber insulated layer 4, urethane jacket layer.
Referring to Fig. 2, manufacturing approach craft process: 1., synnema conductor use the cage twisted wire with back twist function
Machine process soft copper conductor, reinforcing fibre rope is located at conductor central location when process, and process outermost layer pitch ratio is not more than 12 times, control
It is almost the same to make each draw drum tension, reinforces conductor DC resistance and meets GB/T 5013.6-2008 requirement；2., insulation meet
IE4 type specified in GB/T 5013.1-2008 is ethylene propylene rubber insulated, leads to after squeezing out insulation by extruder by even sulphur production line
It crosses continuous vulcanization pipeline and carries out continuous vulcanization, insulation thickness is shown in Table 1；3., polyurethane jacket squeeze out, common extruding machine is using squeezing pipe
Formula or half tubular molding tool squeeze out, and squeeze out jacket thickness and are shown in Table 1, finished cable is received in take-up by admission machine by being cooled and shaped
On disk.
Table 1: reinforce conductor polyurethane jacket welding machine cable technical parameter
Embodiment 1:16mm2Reinforce conductor polyurethane jacket welding machine cable
Conductor uses 0.2mm copper wire, and using the advanced column conductor synnema of strand winder, 93 0.2mm left-hands of synnema structure are twisted
It closes, synnema pitch ratio is not more than 25 times；The synnema conductor of each 93 copper wire composition carries out conductor as one again and twists again, multiple to twist
It is twisted using 1+6 dextrad, it is completed on the cage stranding machine with back twist function, 1 diameter 1.8mm reinforcing fibre rope, which is located at, to be twisted
Line center, peripheral 6 93/0.2mm bundle strand conductors, it is almost the same to control each draw drum tension, reinforces conductor DC resistance and meets
GB/T 5013.6-2008 requirement, 20 DEG C of D.C. resistances of conductor are not more than 1.19 Ω/km, the wrapped high intensity of the outer single overlays of conductor
Nylon tape, diameter 6.2-6.5mm after band.
Connect in 90 types and extrude white the third insulating cement of second on sulphur production line, after even sulphur production line squeezes out insulation by extruder
Continuous vulcanization is carried out by continuous vulcanization pipeline, the insulation of second third meets the third rubber of IE4 type second specified in GB/T 5013.1-2008
Glue, nominal insulation thickness 0.7mm extrude rear diameter 7.6-7.9mm, extrude 20 meters/min of linear velocity, even the air pressure of sulphur pipeline is not low
In 1.2Mpa, even sulphur extruder each section controls temperature: each section 40 DEG C -90 DEG C of extruder, 90 DEG C -110 DEG C of head die orifice, extruding
Core carries out online 15kV working-frequency voltage test afterwards.
Red polyether-type environmentally-friendly flame retardant thermoplastic polyurethane elastomer sheath is extruded, is completed on 90 type extruding machines, is used
Tubular molding tool, 9 meters/min of extruded velocity, extruder each section control temperature: each section 80 DEG C -150 DEG C of extruder, head die
150 DEG C -160 DEG C of mouth, squeezes out nominal jacket thickness 1.3mm, extrudes rear diameter control range 10.2-10.5mm, and finished cable is logical
Supercooling molding is received on take-up reel by admission machine, and finished cable carries out 1kV Inundate Voltage Experiment.
The present invention reinforces conductor polyurethane jacket welding machine cable compared with existing welding machine cable performance:
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of reinforcement conductor polyurethane jacket welding machine cable, it is characterised in that: including being set gradually in from the inside to the outside
The copper wire of heart reinforcing fibre rope twists flexible conductor (1), high-strength nylon belting layer (2), ethylene propylene rubber insulated layer (3) and poly- ammonia again
Ester restrictive coating (4), the center reinforcing fibre rope is woven using aramid fiber yarn or ultra high molecular weight polyethylene fiber braiding, the copper
Line twists flexible conductor (1) again and is overlapped wrapped high-strength nylon band formation high-strength nylon belting layer (2) outside.
2. reinforcement conductor polyurethane jacket welding machine cable according to claim 1, it is characterised in that: the EP rubbers
Insulating layer (3) uses IE4 type EP rubbers.
3. reinforcement conductor polyurethane jacket welding machine cable according to claim 1, it is characterised in that: the urethane
Jacket layer (4) uses domestic polyether-type environmentally-friendly flame retardant thermoplastic polyurethane elastomer.
4. a kind of manufacturing method for reinforcing conductor polyurethane jacket welding machine cable, it is characterised in that: comprising the following specific steps
Synnema conductor uses the cage stranding machine process soft copper conductor with back twist function, and reinforcing fibre rope is located at conductor when process
Central location, process outermost layer pitch ratio are not more than 12 times, and it is almost the same to control each draw drum tension, reinforce conductor DC resistance
Meet GB/T 5013.6-2008 requirement；
It is ethylene propylene rubber insulated that insulation meets IE4 type specified in GB/T 5013.1-2008, by even sulphur production line by extruder
Pass through the progress continuous vulcanization of continuous vulcanization pipeline after squeezing out insulation；
Polyurethane jacket squeezes out, and common extruding machine is using tubular type or half tubular molding tool extrusion is squeezed, and finished cable is by being cooled to
Type is received on take-up reel by admission machine.
5. a kind of manufacturing method for reinforcing conductor polyurethane jacket welding machine cable according to claim 4, feature exist
In: the insulation extrudes 20 meters/min of linear velocity, and even the air pressure of sulphur pipeline is not less than 1.2Mpa, continuous vulcanization extruder each section
It controls temperature: each section 40 DEG C -90 DEG C of extruder, 90 DEG C -110 DEG C of head die orifice, extruding rear core and carry out online 15kV power frequency electric
Pressure test.
6. a kind of manufacturing method for reinforcing conductor polyurethane jacket welding machine cable according to claim 4, feature exist
In: the polyurethane jacket is completed on 90 type extruding machines, using tubular molding tool, 9 meters/min of extruded velocity, each portion of extruder
Sub-control temperature:, 150 DEG C -160 DEG C of head die orifice, squeezing out nominal jacket thickness 1.3mm by each section 80 DEG C -150 DEG C of extruder, squeezes
Diameter control range 10.2-10.5mm after packet, finished cable are received on take-up reel by being cooled and shaped by admission machine, finished product electricity
Cable carries out 1kV Inundate Voltage Experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177156.1A CN109524154A (en) | 2018-10-10 | 2018-10-10 | A kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177156.1A CN109524154A (en) | 2018-10-10 | 2018-10-10 | A kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN109524154A true CN109524154A (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811177156.1A Pending CN109524154A (en) | 2018-10-10 | 2018-10-10 | A kind of reinforcement conductor polyurethane jacket welding machine cable and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664482A (en) * | 2022-03-30 | 2022-06-24 | 宁波宁港线缆制造有限公司 | High-flexibility and distortion-resistant cable material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201975155U (en) * | 2010-09-21 | 2011-09-14 | 芜湖航天特种电缆厂 | Electronic communication soft antenna cable for being matched with civil aviation airplane communication system for use |
| CN202615865U (en) * | 2012-06-05 | 2012-12-19 | 安徽新科电缆集团股份有限公司 | Cable special for wind driven generator |
| CN203573672U (en) * | 2013-10-12 | 2014-04-30 | 河南华泰特种电缆有限公司 | Damage-resistant weatherproof environment-friendly cable for electric welding machine |
| CN104332245A (en) * | 2014-10-29 | 2015-02-04 | 无锡市明珠电缆有限公司 | Novel flexible and bending resistant type DC pulling cable of rail transit and preparation method of DC pulling cable |
-
2018
- 2018-10-10 CN CN201811177156.1A patent/CN109524154A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201975155U (en) * | 2010-09-21 | 2011-09-14 | 芜湖航天特种电缆厂 | Electronic communication soft antenna cable for being matched with civil aviation airplane communication system for use |
| CN202615865U (en) * | 2012-06-05 | 2012-12-19 | 安徽新科电缆集团股份有限公司 | Cable special for wind driven generator |
| CN203573672U (en) * | 2013-10-12 | 2014-04-30 | 河南华泰特种电缆有限公司 | Damage-resistant weatherproof environment-friendly cable for electric welding machine |
| CN104332245A (en) * | 2014-10-29 | 2015-02-04 | 无锡市明珠电缆有限公司 | Novel flexible and bending resistant type DC pulling cable of rail transit and preparation method of DC pulling cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664482A (en) * | 2022-03-30 | 2022-06-24 | 宁波宁港线缆制造有限公司 | High-flexibility and distortion-resistant cable material and preparation method thereof |
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Application publication date: 20190326 |
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