CN114724752B - Multi-core cable with stable signal - Google Patents
Multi-core cable with stable signal Download PDFInfo
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- CN114724752B CN114724752B CN202210361808.7A CN202210361808A CN114724752B CN 114724752 B CN114724752 B CN 114724752B CN 202210361808 A CN202210361808 A CN 202210361808A CN 114724752 B CN114724752 B CN 114724752B
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- -1 polyethylene Polymers 0.000 claims description 39
- 229920001780 ECTFE Polymers 0.000 claims description 27
- 229920001684 low density polyethylene Polymers 0.000 claims description 23
- 239000004702 low-density polyethylene Substances 0.000 claims description 23
- 239000004698 Polyethylene Substances 0.000 claims description 15
- 229920000573 polyethylene Polymers 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 235000019359 magnesium stearate Nutrition 0.000 claims description 4
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- CHJAYYWUZLWNSQ-UHFFFAOYSA-N 1-chloro-1,2,2-trifluoroethene;ethene Chemical group C=C.FC(F)=C(F)Cl CHJAYYWUZLWNSQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H01B7/08—Flat or ribbon 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Insulated Conductors (AREA)
Abstract
The application relates to the field of cables, and particularly discloses a multi-core cable with stable signals. A multi-core cable with stable signals comprises a core wire set, wherein a shielding layer is coated on the outer periphery of the core wire set, and an outer sheath is pressed on the outer periphery of the shielding layer; the core wire group comprises a plurality of core wires arranged in parallel, and the outer peripheral sides of the plurality of core wires are pressed with middle quilts. The gap between heart yearn and the heart yearn reduces among the multicore cable in this application, is favorable to improving multicore cable's signal transmission stability.
Description
Technical Field
The present application relates to the field of cables, and more particularly, to a signal-stabilized multi-core cable.
Background
The multi-core cable is a cable with more than one insulated wire core, has the characteristics of reducing the skin effect of the cable and further reducing the line loss, plays an important role in electronic products and electronic systems, and is a key link for connecting various functions of the electronic products.
At present, the multi-core cable mainly comprises a plurality of core wires, the core wires are arranged in parallel, the outer peripheral sides of the core wires are wrapped with aluminum foil shielding layers along the length direction of the core wires, the aluminum foil shielding layers tie the core wires together, and the outer peripheral sides of the aluminum foil shielding layers are pressed with outer sheaths.
In the multi-core cable, a plurality of core wires have relatively large gaps, when the number of groups of the core wires is larger, the gaps between the core wires are larger, and the existence of the gaps can influence the stable performance of the multi-core cable signal transmission.
Disclosure of Invention
In order to improve the stability of multicore cable signal transmission, this application provides a stable multicore cable of signal.
The application provides a stable multicore cable of signal adopts following technical scheme:
a multi-core cable with stable signals comprises a core wire set, wherein a shielding layer is coated on the periphery of the core wire set, and an outer sheath is pressed on the periphery of the shielding layer; the core wire group comprises a plurality of core wires arranged in parallel, and the outer peripheral sides of the plurality of core wires are pressed with middle quilts.
By adopting the technical scheme, the middle quilt is firstly pressed on the outer peripheral sides of the plurality of core wires, then the outer peripheral sides of the middle quilt are coated with the shielding layer, and finally the outer sheath is pressed on the outer peripheral sides of the shielding layer; when the outer periphery of the plurality of core wires is pressed, the gap between the core wires is reduced, so that the signal transmission stability of the multi-core cable is improved.
Preferably, the core wire groups are arranged in parallel in a plurality of groups, the middle quilt is flat, and the shielding layer is coated on the peripheral sides of the core wire groups arranged in parallel in the plurality of groups.
By adopting the technical scheme, the core wire groups can be provided with a plurality of groups as required, when a plurality of groups of core wire groups are arranged, the one-layer flat quilt is pressed on the outer peripheral sides of the plurality of groups of core wire groups, so that the gaps between the core wire groups can be reduced, and the improvement of the stability of the signal transmission of the multi-core cable is facilitated.
Preferably, the outer sheath is made of modified polyethylene material, and the modified polyethylene material is prepared from the following raw materials in parts by weight:
ethylene-chlorotrifluoroethylene copolymer: 12 to 16 portions of
Low density polyethylene: 100 portions of
Filling: 7.5 to 9.2 portions of
A compatilizer: 1-3 parts.
By adopting the technical scheme, the ethylene-chlorotrifluoroethylene copolymer and the low-density polyethylene have a synergistic effect, and when the ethylene-chlorotrifluoroethylene copolymer and the low-density polyethylene are matched according to the proportion, the bending resistance and the heat resistance of the outer sheath of the multi-core cable can be improved.
Preferably, the ethylene-chlorotrifluoroethylene copolymer has a tensile strength of 30 to 50MPa.
By adopting the technical scheme, when the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is within the range of 30-50MPa, the bending resistance and the heat resistance of the multi-core cable are excellent.
Preferably, the tensile strength of the low density polyethylene is 420-560MPa.
By adopting the technical scheme, when the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is within the range of 30-50MPa and the tensile strength of the low-density polyethylene is within the range of 420-560MPa, the bending resistance and the heat resistance of the multi-core cable are further improved.
Preferably, the filler is one or a combination of more of calcium carbonate, white carbon black and diatomite.
By adopting the technical scheme, the cost can be reduced by adding the fillers such as calcium carbonate, white carbon black, diatomite and the like, and the hardness of the outer sheath can be improved, so that the hardness of the outer sheath is moderate, and the bending resistance of the multi-core cable outer sheath is improved.
Preferably, the compatilizer is a silane coupling agent, and the silane coupling agent is any one or a combination of KH-550, KH-560 and KH-570.
By adopting the technical scheme, the silane coupling agent can improve the compatibility between the inorganic filler and the organic material, so that the inorganic filler can be uniformly dispersed into the organic material, and the bending resistance of the outer sheath can be improved.
Preferably, the modified polyethylene further comprises 0.5 to 1.5 parts by weight of a lubricant.
By adopting the technical scheme, the addition of the lubricant can promote the raw materials to be fully and uniformly mixed, and the bending resistance of the outer sheath is favorably improved.
Preferably, the lubricant is one or a combination of more of sodium stearate, magnesium stearate and zinc stearate.
By adopting the technical scheme, the compatibility of sodium stearate, magnesium stearate, zinc stearate and other raw materials of the outer sheath is better, the raw materials can be uniformly mixed, and the bending resistance of the outer sheath can be improved.
In summary, the present application has the following beneficial effects:
1. according to the method, a middle quilt is pressed on the outer peripheral sides of a plurality of core wires, then the outer peripheral sides of the middle quilt are coated with a shielding layer, and finally an outer sheath is pressed on the outer peripheral sides of the shielding layer; when the outer periphery of the plurality of core wires is pressed, the gap between the core wires is reduced, so that the signal transmission stability of the multi-core cable is improved.
2. The ethylene-chlorotrifluoroethylene copolymer and the low-density polyethylene have a synergistic effect, and when the ethylene-chlorotrifluoroethylene copolymer and the low-density polyethylene are matched according to a certain proportion, the bending resistance and the heat resistance of the outer sheath of the multi-core cable can be improved.
3. When the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is within the range of 30-50MPa and the tensile strength of the low-density polyethylene is within the range of 420-560MPa, the bending resistance and the heat resistance of the multi-core cable are further improved.
Detailed Description
The present application will be described in further detail with reference to examples.
The starting materials referred to in the present application are all commercially available, wherein:
ethylene-chlorotrifluoroethylene copolymer was purchased from Renji plastics, inc. of Dongguan;
low density polyethylene is available from ultra-high-volume plastics materials, inc. of Dongguan.
Examples
Example 1
A multi-core cable with stable signals comprises a plurality of core wire groups arranged in parallel, each core wire group comprises a plurality of core wires arranged in parallel, and the outer peripheral sides of the plurality of core wires are pressed with flat polyvinyl chloride middle coverings. In the embodiment, the shielding layer is specifically an aluminum foil shielding layer, and an outer sheath made of modified polyethylene material is pressed on the peripheral side of the aluminum foil shielding layer. Specifically, the preparation method of the modified polyethylene material in this embodiment is as follows:
12kg of ethylene-chlorotrifluoroethylene copolymer with the tensile strength of 20MPa, 100kg of low-density polyethylene with the tensile strength of 360MPa, 9.2kg of calcium carbonate and 1kg of KH550 are evenly mixed and then added into an extruder, and the mixture is extruded and granulated at 180 ℃ to obtain the modified polyethylene material.
Example 2
A multi-core cable with stable signals, which is different from embodiment 1 in that: the preparation method of the modified polyethylene material in this example is as follows:
14kg of ethylene-chlorotrifluoroethylene copolymer with the tensile strength of 20MPa, 100kg of low-density polyethylene with the tensile strength of 360MPa, 8.3kg of white carbon black and 2kg of KH560 are uniformly mixed and added into an extruder, and the mixture is extruded and granulated at 175 ℃ to obtain the modified polyethylene material.
Example 3
A multi-core cable with stable signals, which is different from embodiment 1 in that: in this example, the modified polyethylene material is prepared by the following method:
16kg of ethylene-chlorotrifluoroethylene copolymer with the tensile strength of 20MPa, 100kg of low-density polyethylene with the tensile strength of 360MPa, 7.5kg of diatomite and 3kg of KH570 are uniformly mixed and then added into an extruder, and the mixture is extruded and granulated at 185 ℃ to obtain the modified polyethylene material.
Example 4
A signal-stabilized multi-core cable, which is different from embodiment 2 in that:
in this example, the tensile strength of the ethylene-chlorotrifluoroethylene copolymer was 30MPa.
Example 5
A signal-stabilized multi-core cable, which is different from embodiment 2 in that:
in this example, the tensile strength of the ethylene-chlorotrifluoroethylene copolymer was 50MPa.
Example 6
A signal-stabilized multi-core cable, which is different from embodiment 2 in that:
in this example, the tensile strength of the ethylene-chlorotrifluoroethylene copolymer was 70MPa.
Example 7
A signal-stabilized multi-core cable, which is different from embodiment 5 in that:
in this example, the tensile strength of the low density polyethylene was 420MPa.
Example 8
A multi-core cable with stable signal, which is different from embodiment 5 in that:
in this example, the tensile strength of the low density polyethylene was 560MPa.
Example 9
A signal-stabilized multi-core cable, which is different from embodiment 5 in that:
in this example, the tensile strength of the low density polyethylene was 880MPa.
Example 10
A signal-stabilized multi-core cable, which is different from embodiment 8 in that:
in this embodiment, the modified polyethylene material further includes 0.5kg of a lubricant, specifically, sodium stearate is used as the lubricant.
Example 11
A multi-core cable with stable signal, which is different from embodiment 8 in that:
in this example, the modified polyethylene material further included 1.5kg of a lubricant, which included 1.0kg of magnesium stearate and 0.5kg of zinc stearate.
Example 12
A signal-stabilized multi-core cable, which is different from embodiment 2 in that:
in this example, the low density polyethylene was replaced with an equal amount of ethylene chlorotrifluoroethylene copolymer.
Example 13
A signal-stabilized multi-core cable, which is different from embodiment 2 in that:
in this example, instead of using an equal amount of low density polyethylene, ethylene chlorotrifluoroethylene copolymer was used.
Performance test
And (3) testing the bending resistance of the multi-core cable in the examples 1 to 13 after standing for 24 hours at 20 ℃ and 60 ℃ by respectively adopting a TH8037 towline cable repeated bending flexibility testing machine, and recording the average data in the following table 1.
TABLE 1 bending resistance of cables of examples 1-13 after treatment at different temperatures for 24h
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Number of bending times per ten thousand times after treatment at 20 DEG C | 842 | 859 | 851 | 889 | 882 |
| Number of times of bending/ten thousand times after treatment at 60 DEG C | 751 | 769 | 759 | 810 | 803 |
| Item | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| Number of bending times per ten thousand times after treatment at 20 DEG C | 854 | 963 | 972 | 896 | 986 |
| Number of times of bending/ten thousand times after treatment at 60 DEG C | 761 | 892 | 903 | 816 | 917 |
| Item | Example 11 | Example 12 | Example 13 | ||
| Number of bending times per ten thousand times after treatment at 20 DEG C | 994 | 612 | 529 | ||
| Number of bending times per ten thousand times after treatment at 60 DEG C | 924 | 370 | 317 |
It can be seen from the combination of example 2 and examples 4 to 6 and table 1 that, when the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is 30 to 50MPa, the multi-core cable has better bending resistance, and when the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is 30 to 50MPa, the reduction rate of the bending resistance times of the multi-core cable after being treated at 60 ℃ for 24 hours is relatively low, which indicates that when the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is within the range of 30 to 50MPa, the multi-core cable has better bending resistance and heat resistance.
When the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is 30-50MPa and the tensile strength of the low-density polyethylene is in the range of 420-560MPa, the bending resistance of the multi-core cable is further improved, and the reduction rate of the number of times of bending of the multi-core cable after being treated at 60 ℃ for 24 hours is further reduced, as can be seen by combining the examples 5 and 7-9 with table 1, which indicates that the bending resistance and the heat resistance of the multi-core cable are more excellent when the tensile strength of the ethylene-chlorotrifluoroethylene copolymer is in the range of 30-50MPa and the tensile strength of the low-density polyethylene is in the range of 420-560MPa.
It can be seen from the combination of example 8 and examples 10 to 11 and from table 1 that the bending resistance of the multi-core cable is further improved when a lubricant is added to the outer jacket.
Combining example 2 with examples 12-13 and combining table 1, it can be seen that the ethylene-chlorotrifluoroethylene copolymer and the low density polyethylene have a synergistic effect, and when the ethylene-chlorotrifluoroethylene copolymer and the low density polyethylene are mixed in a certain proportion, the bending resistance and the heat resistance of the outer sheath of the multi-core cable can be improved.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (7)
1. A multi-core cable with stable signals is characterized by comprising a core wire set, wherein a shielding layer is coated on the peripheral side of the core wire set, and an outer sheath is pressed on the peripheral side of the shielding layer; the core wire group comprises a plurality of core wires arranged in parallel, and the outer peripheral sides of the plurality of core wires are pressed with quilts;
the outer sheath is made of modified polyethylene material, and the modified polyethylene material is prepared from the following raw materials in parts by weight:
ethylene-chlorotrifluoroethylene copolymer: 12 to 16 portions of
Low density polyethylene: 100 portions of
Filling: 7.5 to 9.2 portions of
A compatilizer: 1-3 parts of
The tensile strength of the low-density polyethylene is 420-560MPa.
2. The signal-stabilizing multicore cable of claim 1, wherein the sets of cores are arranged in parallel, the middle portion is flat, and the shielding layer covers the outer peripheral sides of the sets of cores arranged in parallel.
3. A signal stabilized multicore cable according to claim 1, wherein said ethylene chlorotrifluoroethylene copolymer has a tensile strength of 30 to 50MPa.
4. The signal-stabilized multicore cable of claim 1, wherein the filler is one or a combination of calcium carbonate, silica, and diatomaceous earth.
5. The signal-stabilized multi-core cable according to claim 1, wherein the compatibilizer is a silane coupling agent, and the silane coupling agent is any one or a combination of KH-550, KH-560 and KH-570.
6. The signal-stabilized multi-core cable of claim 1, wherein the modified polyethylene further comprises 0.5 to 1.5 parts by weight of a lubricant.
7. The signal-stabilized multi-core cable according to claim 6, wherein the lubricant is one or a combination of sodium stearate, magnesium stearate and zinc stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210361808.7A CN114724752B (en) | 2022-04-07 | 2022-04-07 | Multi-core cable with stable signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361808.7A CN114724752B (en) | 2022-04-07 | 2022-04-07 | Multi-core cable with stable signal |
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| Publication Number | Publication Date |
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| CN114724752A CN114724752A (en) | 2022-07-08 |
| CN114724752B true CN114724752B (en) | 2022-12-06 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614319A (en) * | 1995-05-04 | 1997-03-25 | Commscope, Inc. | Insulating composition, insulated plenum cable and methods for making same |
| US7094836B2 (en) * | 2004-03-04 | 2006-08-22 | Teknor Apex Company | Compatibilizers for fluoropolymers and polyolefins; blends thereof |
| CN105225763B (en) * | 2015-10-12 | 2017-07-11 | 中国电子科技集团公司第二十三研究所 | A kind of aerospace 100,000,000 netting twines and preparation method thereof |
| CN215730936U (en) * | 2021-08-18 | 2022-02-01 | 惠州市德胜电线有限公司 | Connecting line for PCIE4.0 |
| CN114141423A (en) * | 2021-11-27 | 2022-03-04 | 深圳市红旗电工科技有限公司 | A kind of intelligent charging cable and its preparation process and application |
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