CN114068105A - Production process of phase-stable and amplitude-stable cable - Google Patents
Production process of phase-stable and amplitude-stable cable Download PDFInfo
- Publication number
- CN114068105A CN114068105A CN202111361450.XA CN202111361450A CN114068105A CN 114068105 A CN114068105 A CN 114068105A CN 202111361450 A CN202111361450 A CN 202111361450A CN 114068105 A CN114068105 A CN 114068105A
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- layer
- silver
- plated copper
- shielding layer
- cable
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 129
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000004020 conductor Substances 0.000 claims abstract description 34
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052709 silver Inorganic materials 0.000 claims abstract description 29
- 239000004332 silver Substances 0.000 claims abstract description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 24
- 239000010949 copper Substances 0.000 claims abstract description 24
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 21
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000035939 shock Effects 0.000 claims abstract description 17
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 238000002635 electroconvulsive therapy Methods 0.000 claims abstract description 5
- 238000009941 weaving Methods 0.000 claims description 14
- 238000004321 preservation Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01B13/08—Insulating conductors or cables by winding
-
- 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
- H01B13/10—Insulating conductors or cables by longitudinal lapping
Abstract
The invention discloses a production process of a phase-stable and amplitude-stable cable, which comprises a silver-plated copper central conductor, wherein a polytetrafluoroethylene lapping insulating medium layer is wound outside the silver-plated copper central conductor, a silver-plated copper lapping process is carried out outside the polytetrafluoroethylene lapping insulating medium layer to form an inner shielding layer, a microporous silver tape layer is lapped outside the inner shielding layer, the lapping direction of the inner shielding layer is opposite to that of the microporous silver tape layer, a silver-plated copper wire woven outer shielding layer is arranged outside the microporous silver tape layer, and a conductor protective layer is arranged outside the silver-plated copper wire woven outer shielding layer; after the insulating medium layer is wrapped, the silver-plated copper wire outer shielding layer is woven, and after the conductor protective layer is extruded, high-temperature thermal shock treatment is carried out on the conductor protective layer; the invention has the advantages that: the cable is subjected to high-temperature thermal shock to release internal stress, and a microporous silver tape is wrapped to improve the anti-electromagnetic anti-interference capability.
Description
Technical Field
The invention belongs to the technical field of cable production and manufacturing, and particularly relates to a production process of a phase-stable and amplitude-stable cable.
Background
The stable phase of the cable is mechanical stable phase and temperature stable phase, and the mechanical stable phase is as follows: the phase change of the coaxial cable in the bending and vibration processes is pointed out. Temperature phase stabilization: it refers to the phase change of the coaxial cable in the temperature change process. Whether the cable is mechanically phase-stable or temperature phase-stable, the smaller the phase change is, the better the phase change is, and the temperature and mechanical change of a single cable are required to be kept in a certain range.
The steady amplitude refers to the phase adjustment between different cables.
The cable in the prior art roughly comprises a central conductor, a wrapping medium layer, an inner shielding layer, an outer shielding layer and a sheath layer, when the cable is manufactured, silver-plated copper is adopted as the central conductor, a polytetrafluoroethylene wrapping process is adopted as the medium layer on the central conductor, silver-plated copper strips are wrapped on the medium layer to form the inner shielding layer after high-temperature thermal cycle treatment, silver-plated copper wires are woven on the inner shielding layer to form the outer shielding layer, and finally the sheath is extruded to protect the cable.
Chinese patent CN111403115B discloses a process for producing a stable-amplitude phase-stabilized cable, which comprises the following steps: a low-density polytetrafluoroethylene taped wrapping process is adopted on the central conductor to serve as an insulating medium layer of the cable; the method comprises the following steps of performing a silver tape wrapping process on a medium layer after high-temperature shaping to form an inner layer shield of a cable, performing a silver-plated copper wire weaving process on the inner layer shield to serve as an outer shield layer and a protective layer of the cable, extruding the outer shield layer through high-temperature fluoroplastic to form an environment-resistant protective layer of the cable, performing high-low temperature cold and hot treatment on the medium layer, performing plasma spray treatment on the cable after the high-low temperature cold and hot treatment in advance during the next silver-plated copper tape wrapping production process, enabling the coefficient of expansion with heat and contraction to be close when the cable is extruded at high temperature through the control of the production process on the basis of not changing the original stable-amplitude and phase cable structure, and reducing the gap between the medium layer on the second layer and the inner layer shield on the third layer and extruding, so that the phase stability performance is improved; the technical scheme is that the medium layer is transferred between low temperature and high temperature for many times, namely a thermal cycle process, but the temperature difference is large, so that the environmental temperature cannot be controlled in the transfer process, and the instantaneous impact of the temperature on the cable cannot be carried out, so that the defect of poor modification effect is easily caused.
Disclosure of Invention
The invention aims to overcome the limitations and provides a phase-stable amplitude-stable cable which releases internal stress by carrying out high-temperature thermal shock on the cable and is wrapped by a microporous silver tape to prevent electromagnetic interference and a production process thereof.
The purpose of the invention is realized by the following technical scheme: a production process of a phase-stable and amplitude-stable cable comprises a silver-plated copper central conductor, wherein a polytetrafluoroethylene wrapping insulating medium layer is wound outside the silver-plated copper central conductor, a silver-plated copper wrapping process is performed outside the polytetrafluoroethylene wrapping insulating medium layer to form an inner shielding layer, a microporous silver tape layer is wrapped outside the inner shielding layer, a silver-plated copper wire woven outer shielding layer is arranged outside the microporous silver tape layer, and a conductor protective layer is arranged outside the silver-plated copper wire woven outer shielding layer; after the insulating medium layer is wrapped, the silver-plated copper wire outer shielding layer is woven, and after the micropore silver tape layer is wrapped or the conductor protective layer is extruded, high-temperature thermal shock treatment is carried out on the conductor protective layer, and the method comprises the following specific steps:
A. after wrapping a polytetrafluoroethylene insulating medium layer, performing heat preservation in a high-temperature box for instantaneous thermal impact, wherein the heat preservation time is 8-10 hours, and the temperature is kept at 140-160 ℃;
B. carrying out a silver-plated copper lapping process on the outer part of a polytetrafluoroethylene lapping insulating medium layer to form an inner shielding layer, then lapping a microporous silver tape layer, weaving a silver-plated copper wire outer shielding layer on the outer part of the microporous silver tape layer, placing the braided silver wire outer shielding layer into a high-temperature box for heat preservation, and carrying out instantaneous thermal shock again, wherein the heat preservation time is 4-6 hours, and the temperature is kept at 100-120 ℃;
C. after a conductor protection layer is extruded outside the silver-plated copper wire outer shielding layer subjected to high-temperature thermal shock, the cable is placed into a high-temperature box for heat preservation, the third instantaneous thermal shock is carried out, the heat preservation time is 1-3 hours, and the temperature is kept at 180-200 ℃.
Preferably, the lapping directions of the inner shielding layer and the microporous silver tape layer are opposite.
Preferably, the weaving density of the inner shielding layer is 90-96%, and the weaving density of the outer shielding layer is 78-82%.
In summary, the invention has the following advantages: after the insulating medium layer is wrapped, the silver-plated copper wire outer shielding layer is woven, and the microporous silver tape layer is wrapped or the conductor protective layer is extruded, high-temperature thermal shock treatment is carried out on the insulating medium layer, internal stress of each layer of material is fully released through high-temperature instantaneous shock, so that the internal material of the cable is changed, the deformation is smaller and more stable in use, different degrees of bending caused by different thermal expansion coefficients of each layer of cable material is avoided, air in the cable is discharged at the same time, and the influence of gaps on the performance of the cable is avoided; internal shield layer and micropore silver belting can offset each other around package opposite direction and remain the internal stress, can prevent that the cable is because remaining the crooked and the extrusion that the internal stress caused, setting up on micropore silver belting has replaced every section thickness of cable that too much weaving layer caused uneven, swell, jump defects such as silk, and the setting of haplopore and combination hole on the micropore silver belting, can keep out the electromagnetic interference from low frequency to high frequency, also can effectively keep out the electromagnetism to the piercing through of inside center conductor, the steady phase and amplitude stability performance and the shielding effect of cable have been promoted.
Drawings
FIG. 1 is an internal hierarchy view of a cable according to the present invention;
reference numbers in the figures: 1-a silver-plated copper central conductor, 2-a polytetrafluoroethylene lapping insulating medium layer, 3-an inner shielding layer, 4-a microporous silver tape layer, 5-an outer shielding layer and 6-a conductor protective layer.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example 1: as shown in figure 1, the invention provides a production process of a stable-phase and stable-amplitude cable, which comprises a silver-plated copper central conductor 1, wherein a polytetrafluoroethylene lapping insulating medium layer 2 is wound outside the silver-plated copper central conductor 1, and the polytetrafluoroethylene lapping insulating medium layer 2 is lapped and then subjected to heat insulation in a high-temperature box for instantaneous thermal shock, namely, the environmental temperature is instantaneously raised to 140-160 ℃, and the heat insulation is carried out for 8-10 hours; carrying out a silver-plated copper lapping process on the outer part of a polytetrafluoroethylene lapping insulating medium layer 2 to form an inner shielding layer 3, then lapping a microporous silver tape layer 4, weaving a silver-plated copper wire outer shielding layer 5 after lapping the microporous silver tape layer 4, and then placing the braided copper wire outer shielding layer into a high-temperature box for instantaneous thermal shock again, namely, instantaneously raising the environmental temperature to 100-120 ℃ for 4-6 hours; coating a conductor protection layer 6 on the surface of the cable outside the silver-plated copper wire outer shielding layer 5 subjected to high-temperature thermal shock through high-temperature extrusion, and finally, instantaneously raising the environmental temperature to 180-200 ℃ and preserving the temperature for 1-3 hours; after polytetrafluoroethylene winds package insulating medium layer 2, silver-plated copper wire outer shielding layer 5 weaves the back, conductor protective layer 6 extrudes and all carries out high temperature instantaneous thermal shock to it after the coating, make each layer material fully release the internal stress through the environment of high temperature, and release inside air, make the inside material property of cable change simultaneously, it is less to make the cable extrude the sheath time deformation at high temperature, avoid the coefficient of thermal expansion difference of each layer cable material and the bending deformation of the different degree that causes, thereby form the space or extrude and cause the influence to the cable performance.
Example 2: a production process of a phase-stable and amplitude-stable cable comprises a silver-plated copper central conductor 1, wherein a polytetrafluoroethylene lapping insulating medium layer 2 is wound outside the silver-plated copper central conductor 1, and the polytetrafluoroethylene lapping insulating medium layer 2 is lapped and then subjected to heat insulation in a high-temperature box to perform instantaneous thermal shock, namely, the environmental temperature is instantaneously raised to 140-160 ℃, and the heat insulation is carried out for 8-10 hours; carrying out a silver-plated copper lapping process on the outer part of the polytetrafluoroethylene lapping insulating medium layer 2 to form a lapping of the microporous silver tape layer 4 after an inner shielding layer 3 is formed, and placing the lapping into a high-temperature box for instantaneous thermal shock again after lapping, namely, instantaneously raising the environmental temperature to 100-120 ℃, and keeping the temperature for 4-6 hours; weaving a silver-plated copper wire outer shielding layer 5 outside the microporous silver belt layer 4 subjected to high-temperature thermal shock, placing the woven microporous silver belt layer into a high-temperature box for heat preservation after weaving, and carrying out third instantaneous thermal shock, namely instantaneously raising the environmental temperature to 180-200 ℃, and preserving the heat for 1-3 hours; a conductor protection layer 6 is arranged outside the silver-plated copper wire outer shielding layer 5; because the conductor protective layer 6 of the last process needs to be extruded and coated on the surface of the cable through high temperature, the performance influence of the high temperature environment on the cable is large, therefore, after the polytetrafluoroethylene is wrapped with the insulating medium layer 2, the microporous silver belt layer 4 is wrapped, the silver-plated copper wire outer shielding layer 5 is woven, then high-temperature instantaneous thermal shock treatment is carried out on the cable, the internal stress of each layer of material is fully released through the high temperature environment, the internal air of the cable is released, meanwhile, the property of the internal material of the cable is changed, the deformation of the cable is small when the sheath is extruded at high temperature, different degrees of bending deformation caused by different thermal expansion coefficients of each layer of cable material is avoided, and gaps are formed or the influence of extrusion on the performance of the cable is caused.
Micropore silver-colored tape layer 4 and silver-plated copper are around package opposite direction that package technology formed internal shield layer 3, can offset each other and remain the internal stress, can prevent the cable because remain the bending and the extrusion that the internal stress caused, every section thickness of cable that too much weaving layer caused has been replaced in setting up of micropore silver-colored tape layer 4 is uneven, swell, jump defects such as silk, and the setting of haplopore and combination hole on the micropore silver-colored tape layer 4, can keep out from the electromagnetic interference of low frequency to high frequency, also can effectively keep out the electromagnetism and to the penetration of inside center conductor, the steady phase and the steady amplitude performance and the shielding effect of cable have been promoted
The weaving density of the inner shielding layer is 90-96%, the weaving density of the outer shielding layer is 78% -82%, the appropriate density range can avoid the phenomenon that each section of silver-plated copper wires are uneven in thickness when being woven, the poor shielding effect caused by too low density is avoided, and the phenomenon that the internal air cannot be discharged caused by too high density is avoided.
Claims (3)
1. A production process of a phase-stable and amplitude-stable cable is characterized by comprising the following steps: the cable comprises a silver-plated copper central conductor, wherein a polytetrafluoroethylene lapping insulating medium layer is wound outside the silver-plated copper central conductor, a silver-plated copper lapping process is carried out outside the polytetrafluoroethylene lapping insulating medium layer to form an inner shielding layer, a microporous silver tape layer is wound outside the inner shielding layer, a silver-plated copper wire woven outer shielding layer is arranged outside the microporous silver tape layer, and a conductor protective layer is arranged outside the silver-plated copper wire woven outer shielding layer; after the insulating medium layer is wrapped, the silver-plated copper wire outer shielding layer is woven, and after the micropore silver tape layer is wrapped or the conductor protective layer is extruded, high-temperature thermal shock treatment is carried out on the conductor protective layer, and the method comprises the following specific steps:
A. after wrapping a polytetrafluoroethylene insulating medium layer, performing heat preservation in a high-temperature box for instantaneous thermal impact, wherein the heat preservation time is 8-10 hours, and the temperature is kept at 140-160 ℃;
B. carrying out a silver-plated copper lapping process on the outer part of a polytetrafluoroethylene lapping insulating medium layer to form an inner shielding layer, then lapping a microporous silver tape layer, weaving a silver-plated copper wire outer shielding layer on the outer part of the microporous silver tape layer, placing the braided silver wire outer shielding layer into a high-temperature box for heat preservation, and carrying out instantaneous thermal shock again, wherein the heat preservation time is 4-6 hours, and the temperature is kept at 100-120 ℃;
C. after a conductor protection layer is extruded outside the silver-plated copper wire outer shielding layer subjected to high-temperature thermal shock, the cable is placed into a high-temperature box for heat preservation, the third instantaneous thermal shock is carried out, the heat preservation time is 1-3 hours, and the temperature is kept at 180-200 ℃.
2. The production process of the phase-stable and amplitude-stable cable according to claim 1, characterized in that: the lapping directions of the inner shielding layer and the microporous silver tape layer are opposite.
3. The production process of the phase-stable and amplitude-stable cable according to claim 2, characterized in that: the weaving density of the inner shielding layer is 90-96%, and the weaving density of the outer shielding layer is 78% -82%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361450.XA CN114068105B (en) | 2021-11-17 | 2021-11-17 | Production process of phase-stabilizing and amplitude-stabilizing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361450.XA CN114068105B (en) | 2021-11-17 | 2021-11-17 | Production process of phase-stabilizing and amplitude-stabilizing cable |
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| Publication Number | Publication Date |
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| CN114068105A true CN114068105A (en) | 2022-02-18 |
| CN114068105B CN114068105B (en) | 2023-10-27 |
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| CN202111361450.XA Active CN114068105B (en) | 2021-11-17 | 2021-11-17 | Production process of phase-stabilizing and amplitude-stabilizing cable |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337443B1 (en) * | 1999-04-23 | 2002-01-08 | Eilentropp Kg | High-frequency coaxial cable |
| CN103971801A (en) * | 2014-05-29 | 2014-08-06 | 安徽宏源特种电缆集团有限公司 | High-power stable-phase cable |
| CN206727201U (en) * | 2017-03-09 | 2017-12-08 | 深圳金信诺高新技术股份有限公司 | A kind of Flouride-resistani acid phesphatase low-loss phase-stable phase radio frequency coaxial-cable |
| CN109994284A (en) * | 2017-12-30 | 2019-07-09 | 中电航宇（昆山）技术有限公司 | Promote the technique processing method of phase-compensated cable range stability |
| CN111403115A (en) * | 2020-04-07 | 2020-07-10 | 滁州润翰微波科技有限公司 | Production process of amplitude-stabilized and phase-stabilized cable |
| CN112071517A (en) * | 2020-09-15 | 2020-12-11 | 江苏亨鑫科技有限公司 | Preparation method and application of low-density polytetrafluoroethylene insulation and product |
| CN113223772A (en) * | 2021-02-23 | 2021-08-06 | 广东金贝尔通信科技有限公司 | Microwave phase-stabilizing coaxial cable and manufacturing process thereof |
-
2021
- 2021-11-17 CN CN202111361450.XA patent/CN114068105B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337443B1 (en) * | 1999-04-23 | 2002-01-08 | Eilentropp Kg | High-frequency coaxial cable |
| CN103971801A (en) * | 2014-05-29 | 2014-08-06 | 安徽宏源特种电缆集团有限公司 | High-power stable-phase cable |
| CN206727201U (en) * | 2017-03-09 | 2017-12-08 | 深圳金信诺高新技术股份有限公司 | A kind of Flouride-resistani acid phesphatase low-loss phase-stable phase radio frequency coaxial-cable |
| CN109994284A (en) * | 2017-12-30 | 2019-07-09 | 中电航宇（昆山）技术有限公司 | Promote the technique processing method of phase-compensated cable range stability |
| CN111403115A (en) * | 2020-04-07 | 2020-07-10 | 滁州润翰微波科技有限公司 | Production process of amplitude-stabilized and phase-stabilized cable |
| CN112071517A (en) * | 2020-09-15 | 2020-12-11 | 江苏亨鑫科技有限公司 | Preparation method and application of low-density polytetrafluoroethylene insulation and product |
| CN113223772A (en) * | 2021-02-23 | 2021-08-06 | 广东金贝尔通信科技有限公司 | Microwave phase-stabilizing coaxial cable and manufacturing process thereof |
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| CN114068105B (en) | 2023-10-27 |
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