CN107936516A - A kind of modified polycarbonate wear-resistant cable - Google Patents
A kind of modified polycarbonate wear-resistant cable Download PDFInfo
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- CN107936516A CN107936516A CN201711050394.1A CN201711050394A CN107936516A CN 107936516 A CN107936516 A CN 107936516A CN 201711050394 A CN201711050394 A CN 201711050394A CN 107936516 A CN107936516 A CN 107936516A
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- modified polycarbonate
- cable
- makrolon
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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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- 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
-
- 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
-
- 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
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of modified polycarbonate wear-resistant cable, including：An at least conductor thread core, the insulating layer being paperwrapped in outside the conductor thread core, the shielded layer being paperwrapped in outside the insulating layer, cladding are around in the restrictive coating outside the shielded layer；The restrictive coating includes inner sheath, liner layer, armor and serving；The inner sheath and serving are prepared using modified polycarbonate material；The modified polycarbonate material is prepared including following parts by weight raw material：10 18 parts of ceramic particle, 12 15 parts of modifying agent, 30 45 parts of polyvinyl butyral resin, 50 65 parts of makrolon, 0.3 0.8 parts of coupling agent, 0.3 0.5 parts of crosslinking agent；The cable improves the wearability of makrolon cable, the makrolon cable is used for a long time in high abrasion environment using modified polycarbonate material by modification, with superior abrasion resistance as the serving in the coat layer of power cable.
Description
Technical field
The present invention relates to field of cables, and in particular to a kind of modified polycarbonate wear-resistant cable.
Background technology
Cable is to be fabricated to conductor thread core by twisted with one or more conducting wire, then corresponding insulation is imposed on conductor
Layer, the conducting wire that outside is wrapped sealing sheath and formed, is mainly made of core, insulating layer, shielded layer and restrictive coating.Cable has
Take ground and space is few；Power supply safety is reliable, and electric shock possibility is small；Be conducive to improve the power factor of electric system；Operation,
Maintenance work is simple and convenient；Be conducive to beautifying city, there is many advantages, such as confidentiality, in being widely used in living and producing
Every field.The restrictive coating performance of cable is one of principal element for determining cable use environment, meanwhile, cable uses ring
Border also determines the performance requirement of cable cover(ing) layer material.
Carbonic ester is the high molecular polymer containing carbonate group in strand, has high intensity and coefficient of elasticity, Gao Chong
The advantages that hit intensity, use temperature range are wide, shaping shrinkage rate is low, dimensional stability is good, weatherability is good, good electrical property,
Electronics, automobile, machinery and chemical field are widely used, and in cable industry, makrolon also has application.But makrolon
Material wearability itself is poor, and obtained makrolon cable cannot meet long-time service of the cable in high abrasion environment, because
This, in order to improve service life of the makrolon cable in high abrasion environment, the wearability of makrolon cable needs to improve
And raising.
The content of the invention
The defects of it is an object of the invention to overcome existing makrolon cable wear resistance poor, there is provided the modified poly- carbonic acid of one kind
Ester wear-resistant cable；The present invention has the modified polycarbonate material of superior abrasion resistance as cable protection by by modification
Serving in jacket layer, improves the wearability of makrolon cable, the makrolon cable is grown in high abrasion environment
Phase uses.
In order to realize foregoing invention purpose, the present invention provides a kind of modified polycarbonate wear-resistant cable, including：At least one
Root conductor thread core, the insulating layer being paperwrapped in outside the conductor thread core, the shielded layer being paperwrapped in outside the insulating layer, cladding are around in institute
State the restrictive coating outside shielded layer；The restrictive coating includes inner sheath, liner layer, armor and serving；The serving is adopted
It is prepared with modified polycarbonate material；The modified polycarbonate material include following parts by weight raw material prepare and
Into：10-18 parts of ceramic particle, 12-15 parts of modifying agent, 30-45 parts of polyvinyl butyral resin, 50-65 parts of poly- carbonic acid
Ester, 0.3-0.8 parts of coupling agent, 0.3-0.5 parts of crosslinking agent；The modifying agent is ethyl orthosilicate and polyacrylate group
Into mixture；The polyacrylate degree of polymerization is 230-360；The polycarbonate polymerization degree is 1200-1800；Institute
The coupling agent stated is methacryloxypropyl trimethoxy silane coupling agent；The crosslinking agent is 2,5- dimethyl -2,5
Di-t-butyl hexane peroxide.
A kind of modified polycarbonate wear-resistant cable of the present invention, using the poly- carbonic acid of modification with superior abrasion resistance and processability
Ester material not only make use of in modified polycarbonate material since specific aim screens modification as the serving in the coat layer of power cable
Agent, coupling agent and crosslinking agent collaboration ceramic particle just assign the more preferable wearability of makrolon to improve the wearability of cable,
Also use in modified polycarbonate material by controlling the degree of polymerization of makrolon to make to have between wearability and processability
Optimum balance relation, so as to get makrolon cable while with superior abrasion resistance, processability is not subject to tight
Ghost image sound, a large amount of productions to Polycarbonate wear-resistant cable have positive effect.
A kind of above-mentioned modified polycarbonate wear-resistant cable, wherein, the ceramic particle particle diameter is 0.01-2 μm；Ceramics
Grain particle diameter is smaller, and dispersiveness is poorer, the humidification of Polycarbonate wear-resistant is reduced, ceramic particle particle diameter is bigger, in poly- carbon
Compatibility is poorer in acid esters phase, interfacial separation easily occurs, influences the wearability of makrolon material；Preferably, the pottery
Porcelain grain diameter is 0.1-1 μm；Most preferably, the ceramic particle particle diameter is 0.3-0.6 μm.
Wherein, it is preferred that the ceramic particle is silicon oxide ceramics, one kind in silicon nitride ceramics, silicon carbide ceramics
It is or a variety of；The ceramic particle is more preferable with the compatibility of makrolon under the action of plurality of raw materials, to the wearability of makrolon
Humidification is optimal.
A kind of above-mentioned modified polycarbonate wear-resistant cable, wherein, the modifying agent had both improved ceramic particle and poly- carbonic acid
The compatibility of ester, moreover it is possible to increase makrolon material wearability；Preferably, ethyl orthosilicate and polypropylene in the modifying agent
The ratio between amount of material of acid esters is 2 ︰ 1.
A kind of above-mentioned modified polycarbonate wear-resistant cable, wherein, the degree of polymerization of makrolon is bigger, and wearability is got over after crosslinking
Difference, processability is better, and the polymer of makrolon is smaller, then wearability is better after being crosslinked, and processability is poorer, and therefore, selection is closed
The polycarbonate polymerization degree of reason, is the important means for balancing wearability and processability.Preferably, the polyacrylate is poly-
Right is 260-320；Optimal, the degree of polymerization of the polyacrylate is 300.Preferably, the polymerization of the makrolon
Spend for 1400-1600；Most preferably, the degree of polymerization of the makrolon is 1500；Pass through the poly- carbonic acid of modification that is preferred, obtaining
Ester material both has excellent wearability, it may have preferable processability, the performance of makrolon cable are also more preferable.
Wherein, the coupling agent is methacryloxypropyl trimethoxy silane coupling agent；Methacryloxypropyl
Base propyl trimethoxy silicane coupling agent can increase the compatibility between ceramic particle and makrolon material, improve modified poly- carbon
The performance of acid esters material, so as to improve the performance of makrolon cable.
Wherein, the crosslinking agent is 2,5- dimethyl -2,5 di-t-butyl hexane peroxides；The crosslinking agent can not only incite somebody to action
The makrolon of two kinds of different polymerization degrees is suitably crosslinked, and improves the wearability of modified polycarbonate material, can be improved and ceramics
The compatibility of grain, increase ceramic particle form synergistic function to the modifying function of makrolon with ceramic particle.
Wherein, the raw material of modified polycarbonate material further include dispersant, plasticizer, antistatic additive, coloring agent, blast
One or more in agent；Above-mentioned auxiliary agent can improve the processability of modified polycarbonate material, increase the effect such as its feature,
So as to improve the performance of makrolon cable.
Wherein, the preparation method of the modified polycarbonate material, comprises the following steps：
（1）Ceramic particle is handled with coupling agent；
（2）Ceramic particle Jing Guo coupling agent treatment is subjected to cladding processing with modifying agent；
（3）Ceramic particle after cladding and polyacrylate, makrolon, crosslinking agent are squeezed with extruder after mixing
Go out, obtain modified polycarbonate material.
A kind of above-mentioned modified polycarbonate wear-resistant cable, wherein, the conductor thread core is prepared by conductive material
Conducting wire；Preferably, the conductor material is one kind in copper, aluminium and its alloy.
Wherein, the shielded layer is made of shielding material；Preferably, the shielding material is composite shielding material.
Wherein, the insulating layer is formed using High Performance Insulation material；Preferably, the insulating materials is compound exhausted
Edge material.
Compared with prior art, beneficial effects of the present invention：
1st, modifying agent, coupling agent and the crosslinking that specific aim is screened in the modified polycarbonate material that cable serving of the present invention uses
Agent species can be formed with ceramic particle and acted synergistically, and improve the compatibility between ceramic particle and makrolon, make to be modified poly- carbon
The wearability of acid esters material is more preferable, so that the wearability of makrolon cable is also more preferable.
2nd, the modified polycarbonate material that cable serving of the present invention uses is resistance to by controlling the degree of polymerization of makrolon to make
Mill property and processability between be provided with optimum balance relation, so as to get makrolon cable with the same of superior abrasion resistance
When, processability, which does not have, to be severely impacted, has positive effect to largely producing for Polycarbonate wear-resistant cable.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
A kind of modified polycarbonate wear-resistant cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating layer：Polyethylene composite insulating material；
Shielded layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, serving is prepared by the following method to obtain：
（1）By silicon oxide ceramics that 15 parts of particle diameter is 0.3 μm with 0.5 part of methacryloxypropyl trimethoxy silane
Coupling agent is handled；
（2）Silicon oxide ceramics Jing Guo coupling agent treatment are coated with 4 parts of polyacrylate and 8 parts of ethyl orthosilicate
Processing；
（3）It is by polyvinyl butyral resin that the silicon oxide ceramics after cladding are 300 with 38 parts of the degree of polymerization, 58 parts of the degree of polymerization
1500 makrolon, 0.4 part of -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl are carried out with extruder after mixing
Extrusion, obtains modified polycarbonate material；
（4）Wrapped to form cable serving with modified polycarbonate material.
Embodiment 2
A kind of modified polycarbonate wear-resistant cable, is followed successively by from inside to outside：
Conductor thread core：Copper aluminum alloy wire；
Insulating layer：Polyethylene composite insulating material；
Shielded layer：Carbon fiber-makrolon composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, serving is prepared by the following method to obtain：
（1）By silicon nitride ceramics that 10 parts of particle diameter is 0.6 μm with 0.3 part of methacryloxypropyl trimethoxy silane
Coupling agent is handled；
（2）Silicon nitride ceramics Jing Guo coupling agent treatment is wrapped with 5 parts of polyacrylate and 10 parts of ethyl orthosilicate
Cover processing；
（3）It is by polyvinyl butyral resin that the silicon nitride ceramics after cladding is 230 with 30 parts of the degree of polymerization, 50 parts of the degree of polymerization
1200 makrolon, 0.3-2,5 di-t-butyl hexane peroxide of 2,5- dimethyl are squeezed with extruder after mixing
Go out, obtain modified polycarbonate material；
（4）Wrapped to form cable serving with modified polycarbonate material.
Embodiment 3
A kind of modified polycarbonate wear-resistant cable, is followed successively by from inside to outside：
Conductor thread core：Aluminum conductor；
Insulating layer：Polyethylene composite insulating material；
Sealant：Silicon rubber；
Shielded layer：Carbon fiber-makrolon composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, serving is prepared by the following method to obtain：
（1）18 parts of particle diameter is even with 0.8 part of methacryloxypropyl trimethoxy silane for 3 μm of silicon carbide ceramics
Connection agent is handled；
（2）Silicon carbide ceramics Jing Guo coupling agent treatment is coated with 4 parts of polyacrylate and 9 parts of ethyl orthosilicate
Processing；
（3）It is by polyvinyl butyral resin that the silicon carbide ceramics after cladding is 360 with 45 parts of the degree of polymerization, 65 parts of the degree of polymerization
1800 makrolon, 0.5 part of -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl are carried out with extruder after mixing
Extrusion, obtains modified polycarbonate material；
（4）Wrapped to form cable serving with modified polycarbonate material.
Comparative example 1
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating layer：Polyethylene composite insulating material；
Shielded layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, serving is prepared by the following method to obtain：
（1）By silicon oxide ceramics that 15 parts of particle diameter is 0.3 μm with 0.5 part of methacryloxypropyl trimethoxy silane
Coupling agent is handled；
（2）By polyvinyl butyral resin that the silicon oxide ceramics Jing Guo coupling agent treatment and 20 parts of the degree of polymerization are 300,55 parts
The degree of polymerization be 1500 makrolon, 0.4 part of -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl after mixing with squeeze
Go out machine to be extruded, obtain modified polycarbonate material；
（3）Wrapped to form cable serving with modified polycarbonate material.
Comparative example 2
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating layer：Polyethylene composite insulating material；
Shielded layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, inner sheath and serving are made by the following method
It is standby to obtain：
（1）By silicon oxide ceramics that 15 parts of particle diameter is 0.3 μm with 0.5 part of methacryloxypropyl trimethoxy silane
Coupling agent is handled；
（2）Silicon oxide ceramics Jing Guo coupling agent treatment are coated with 4 parts of polyacrylate and 8 parts of ethyl orthosilicate
Processing；
（3）It is by polyvinyl butyral resin that the silicon oxide ceramics after cladding are 200 with 38 parts of the degree of polymerization, 58 parts of the degree of polymerization
1000 makrolon, 0.4 part of -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl are carried out with extruder after mixing
Extrusion, obtains modified polycarbonate material；
（4）Wrapped to form cable serving with modified polycarbonate material.
Comparative example 3
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating layer：Polyethylene composite insulating material；
Shielded layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, serving is prepared by the following method to obtain：
（1）By silicon oxide ceramics that 15 parts of particle diameter is 0.3 μm with 0.5 part of methacryloxypropyl trimethoxy silane
Coupling agent is handled；
（2）Silicon oxide ceramics Jing Guo coupling agent treatment are coated with 4 parts of polyacrylate and 8 parts of ethyl orthosilicate
Processing；
（3）It is by polyvinyl butyral resin that the silicon oxide ceramics after cladding are 300 with 38 parts of the degree of polymerization, 58 parts of the degree of polymerization
2000 makrolon, 0.4 part of -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl are carried out with extruder after mixing
Extrusion, obtains modified polycarbonate material；
（4）Wrapped to form cable serving with modified polycarbonate material.
Comparative example 4
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating layer：Polyethylene composite insulating material；
Shielded layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：It is divided into inner sheath, liner layer, armor and serving；Wherein, inner sheath and serving pass through method system
It is standby to obtain：
（1）By silicon oxide ceramics that 15 parts of particle diameter is 0.3 μm with 0.5 part of methacryloxypropyl trimethoxy silane
Coupling agent is handled；
（2）Silicon oxide ceramics Jing Guo coupling agent treatment are coated with 4 parts of polyacrylate and 8 parts of ethyl orthosilicate
Processing；
（3）It is by polyvinyl butyral resin that the silicon oxide ceramics after cladding are 300 with 38 parts of the degree of polymerization, 58 parts of the degree of polymerization
Extruder is used after 1500 makrolon, 0.4 part of -2,5 di-t-butyl hexane peroxide silane mixture of 2,5- dimethyl are uniform
Extruded, obtain modified polycarbonate material；
（4）Wrapped to form cable serving with modified polycarbonate material.
By the cable in above-described embodiment 1-3 and comparative example 1-4, performance detection is carried out, record result is as follows：
| Numbering | Wearability | Processability |
| Embodiment 1 | ++++ | +++ |
| Embodiment 2 | ++++ | +++ |
| Embodiment 3 | ++++ | +++ |
| Comparative example 1 | ++ | ++ |
| Comparative example 2 | ++++ | + |
| Comparative example 3 | ++ | ++++ |
| Comparative example 4 | ++ | ++ |
Note："+" is more, represents that performance is better.
Above-mentioned analysis of experimental results is understood, the modified polycarbonate wear-resistant cable of the present invention in embodiment 1-3, wearability
Good, processability is good；And the modified polycarbonate material used in comparative example 1 does not coat ceramic particle using modifying agent,
Compatibility poor of the ceramic particle in makrolon, the wearability humidification of modified polycarbonate material reduce, processability
It is deteriorated, so as to cause cable processability to be deteriorated, wearability is deteriorated；Modified polycarbonate material polyacrylate in comparative example 2
The degree of polymerization is too small, and the processability of modified polycarbonate material is deteriorated, and cable processability is deteriorated；Modified polycarbonate in comparative example 3
The degree of polymerization of materials polycarbonate is big, and modified polycarbonate material processability improves, but wearability significantly reduces, and causes
Cable wear resistance is deteriorated；Modified polycarbonate material changes crosslinking agent in comparative example 4, modified polycarbonate material it is wear-resisting
Property, processability reduce.
Claims (9)
1. a kind of modified polycarbonate wear-resistant cable, including：An at least conductor thread core, be paperwrapped in it is exhausted outside the conductor thread core
Edge layer, the shielded layer being paperwrapped in outside the insulating layer, cladding are around in the restrictive coating outside the shielded layer；The restrictive coating includes
Inner sheath, liner layer, armor and serving；It is characterized in that, the serving using modified polycarbonate material prepare and
Into；The modified polycarbonate material is prepared including following parts by weight raw material：10-18 parts of ceramic particle, 12-15
The modifying agent, 30-45 parts of polyvinyl butyral resin, 50-65 parts of makrolon, 0.3-0.8 parts of coupling agent, 0.3- of part
0.5 part of crosslinking agent；The mixture that the modifying agent forms for polyacrylate with ethyl orthosilicate；The polyvinyl alcohol
The butyral degree of polymerization is 230-360；The polycarbonate polymerization degree is 1200-1800；The coupling agent is metering system
Acryloxypropylethoxysilane trimethoxysilane coupling agent；The crosslinking agent is -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl.
2. cable according to claim 1, it is characterised in that the ceramic particle particle diameter is 0.01-2 μm.
3. cable according to claim 1, it is characterised in that the ceramic particle is silicon oxide ceramics, silicon nitride is made pottery
One or more in porcelain, silicon carbide ceramics.
4. cable according to claim 1, it is characterised in that ethyl orthosilicate and polyacrylate in the modifying agent
The ratio between the amount of material be 2 ︰ 1.
5. cable according to claim 1, it is characterised in that the degree of polymerization of the polyacrylate is 260-320.
6. cable according to claim 5, it is characterised in that the degree of polymerization of the polyacrylate is 300.
7. cable according to claim 1, it is characterised in that the degree of polymerization of the makrolon is 1200-1800.
8. cable according to claim 7, it is characterised in that the degree of polymerization of the makrolon is 1500.
9. cable according to claim 1, it is characterised in that the modified polycarbonate material passes through following steps system
It is standby to obtain：
（1）Ceramic particle is handled with coupling agent；
（2）Ceramic particle Jing Guo coupling agent treatment is subjected to cladding processing with modifying agent；
（3）Ceramic particle after cladding and polyacrylate, makrolon, crosslinking agent are squeezed with extruder after mixing
Go out, obtain modified polycarbonate material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050394.1A CN107936516A (en) | 2017-10-31 | 2017-10-31 | A kind of modified polycarbonate wear-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050394.1A CN107936516A (en) | 2017-10-31 | 2017-10-31 | A kind of modified polycarbonate wear-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107936516A true CN107936516A (en) | 2018-04-20 |
Family
ID=61936772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711050394.1A Withdrawn CN107936516A (en) | 2017-10-31 | 2017-10-31 | A kind of modified polycarbonate wear-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107936516A (en) |
-
2017
- 2017-10-31 CN CN201711050394.1A patent/CN107936516A/en not_active Withdrawn
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Application publication date: 20180420 |
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