CN203721377U - Coaxial cable resistant to high temperature for communication - Google Patents
Coaxial cable resistant to high temperature for communication Download PDFInfo
- Publication number
- CN203721377U CN203721377U CN201320766750.0U CN201320766750U CN203721377U CN 203721377 U CN203721377 U CN 203721377U CN 201320766750 U CN201320766750 U CN 201320766750U CN 203721377 U CN203721377 U CN 203721377U
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- Prior art keywords
- cable
- coaxial cable
- communication
- temperature
- insulation layer
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Links
- 238000004891 communication Methods 0.000 title claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 239000004020 conductor Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000003063 flame retardant Substances 0.000 claims abstract description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920000098 polyolefin Polymers 0.000 claims abstract description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 39
- 239000003595 mist Substances 0.000 claims description 21
- -1 tinned wird Chemical compound 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 claims description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 239000004809 Teflon Substances 0.000 abstract description 3
- 229920006362 Teflon® Polymers 0.000 abstract description 3
- 238000009954 braiding Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 19
- 239000004810 polytetrafluoroethylene Substances 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
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- Organic Insulating Materials (AREA)
Abstract
The utility model discloses a coaxial cable resistant to high temperature for communication, and the cable is characterized in that the cable is sequentially provided with an inner conductor (1) extending inwards along the central axis of the cable, a micropore composite insulating layer (2), a metal braiding and shielding layer (3), a sheath layer (4) made of perfluorinated ethylene propylene copolymer materials, low-smoke zero-halogen flame-retardant polyolefin materials, or polyvinyl chloride materials from the inside to the outside; the micropore composite insulating layer (2) enables the inner conductor (1) and the metal braiding and shielding layer (3) to be separated; and the micropore composite insulating layer (2) is made of teflon materials containing modified silicon dioxide powder. The cable provided by the utility model completely meets the requirements of all performances of a communication cable resistant to high temperature. The cable can be widely used for the information transmission of high-frequency communication equipment in the industries of communication machine rooms, space flight and aviation, mines and oil wells, and ships, wherein the industries impose requirements for the resistance to high temperature. The cable effectively reduces the cost of production and improves the efficiency of production while improving the performance of a product, so the cable is better in social and economic benefits.
Description
Technical field
The utility model belongs to communications cable product in communication transfer field, specifically a kind of communication high-temperature-resisting coaxial cable with composite microporous insulation system.This cable can be widely used in having the communication of the HF communication equipment in the industries such as the communications equipment room, space flight and aviation, mine oil well, boats and ships of high temperature resistant requirement.
Background technology
In modern communications transmission field, for meeting the communication of large capacity, two-forty, communication frequency is improving constantly.And in information storage, process and still take signal of telecommunication information transmission medium-telecommunication cable as between main communication equipment and have irreplaceable effect.Low decay, low-voltage standing-wave ratio, the high surely high-end telecommunication cable of phase performance that can meet high-frequency information transmission are the main flows of current telecommunication cable technical development.
In communication security, by today of extensive concern, high temperature resistant, fire-retardant, the shielding properties of communication transmission media also become the important indicator that telecommunication cable is chosen aspect.
Polytetrafluoroethylmaterial material is with high temperature resistant, the high chemical stability of its excellence, the main insulating material that low-k becomes current high temperature resistant telecommunication cable.But because polytetrafluoroethylene is non-thermoplastic material, the problem such as poor fluidity causes production and processing difficulty, production efficiency is low and material price is expensive, becomes a key technology difficult problem that limits its cable product widespread adoption.
Summary of the invention
The object of the utility model patent is to provide a kind of communication high-temperature-resisting coaxial cable, overcome teflon insulation explained hereafter difficulty, adopt composite material, stretching mode is pushed in utilization, produce the more outstanding ptfe composite insulated cable of dielectric constant, when improving the transmission performance of telecommunication cable, improved production efficiency, reduced production cost.
The technical solution of the utility model is:
A kind of communication high-temperature-resisting coaxial cable, it is followed successively by from inside to outside: along the inner wire 1 of the central axis longitudinal extension of cable, micropore composite insulation layer 2, metal knitted and screen 3, adopt the restrictive coating 4 of fluorinated ethylene propylene copolymer material or low smoke halogen-free flame-retardant polyolefin material or polyvinyl chloride material, wherein micropore composite insulation layer 2 separates inner wire 1 and metal knitted and screen 3, and the material of described micropore composite insulation layer 2 is that the polytetrafluoroethylene material that contains improved silica micro mist forms.
A kind of communication high-temperature-resisting coaxial cable according to claim 1, during the material that it is characterized in that described micropore composite insulation layer 2 forms, fine silica powder is amorphous silica micro mist.
The dielectric constant of described amorphous silica micro mist is 3.2～3.4.
The particle diameter of described amorphous silica micro mist is at 5 μ m～15 μ m.Modification amorphous silica micro mist adopts conventional silane coupler to process amorphous silica micro mist, removes fine silica powder surface polarity, guarantees that it mixes with the full and uniform of polytetrafluoroethylmaterial material.
During the material of described micropore composite insulation layer 2 forms, the ratio of modification amorphous silica micro mist is 30%～60%, and the content of polytetrafluoroethylene is 40%～70%.
Described micropore composite insulation layer 2 is processed by pushing stretching mode, guarantees that insulating barrier has certain even space, forms micropore composite construction.
Micropore gap in described composite insulation layer 2 is between 30%～60%, and realizing micropore composite insulation layer dielectric constant is 1.5～1.8.
The material of described center conductor 1 is solid metallic conductor: bare copper wire, tinned wird, silver-coated copper wire, copper covered steel wire, silver-copper plated steel clad wire, soft beryllium copper line or silver-colored envelope curve etc.
The material of described center conductor 1 is stranded metallic inner conductor.
The beneficial effects of the utility model are:
Communication of the present utility model is composite microporous structure with the insulating barrier of high-temperature-resisting coaxial cable, has not only reduced the dielectric constant of insulating barrier, has improved the HF communication performance of this cable.Improved the production efficiency of cable insulation operation simultaneously.
Because the price of amorphous silica micro mist is lower than polytetrafluoroethylene, be about its 40%～60%, and the interpolation of this material has improved the processing characteristics of polytetrafluoroethylene, being more conducive to insulation pushes and in drawing process, forms microcellular structure, micropore gap is 30%～60%, with respect to traditional solid-core polyfluortetraethyleinsulating insulating whole cable, reduces 20%～50% of insulation production cost.
Composite microporous insulation layer structure has not only reduced insulation operation manufacturing process difficulty, greatly improved the production efficiency of this kind of high temperature resistant telecommunication cable, improved the electric property of this cable, also be beneficial to and improve insulation layer structure voidage, saved in a large number polytetrafluoroethylmaterial material cost, improved the bending property of cable, have lightweight, softness good, bending radius is little, be easy to the advantages such as mounting and installation.
Be mainly reflected in the following aspects:
1) communication of the present utility model has reduced the dielectric constant of cable insulation with high-temperature-resisting coaxial cable, by traditional solid-core polyfluortetraethyleinsulating insulating dielectric constant 2.1, is reduced to 1.5～1.8, has declined approximately 14%～28%.Improved the signal attenuation of cable in HF communication.
2) communication of the present utility model has improved production efficiency and the accepted product percentage of cable with high-temperature-resisting coaxial cable, adopt amorphous silica and the polytetrafluoroethylmaterial material of 5～15um evenly to mix, can improve the mobility of molten state polytetrafluoroethylene, be more conducive to the speed of pushing of composite insulation layer and push drawing form microcellular structure.
3) communication of the present utility model has reduced the production cost of cable with high-temperature-resisting coaxial cable, use price only for the compound inslation that the amorphous silica powder of polytetrafluoroethylene 40%～60% is filled replaces traditional solid-core polyfluortetraethyleinsulating insulating, and form 30%～60% gap structure.Can realize whole cable cost declines more than 20%.
4) communication of the present utility model has improved the porosity of cable insulation with high-temperature-resisting coaxial cable, by traditional solid-core polyfluortetraethyleinsulating insulating to micropore compound inslation, voidage is promoted to 30%～60%, thereby reduced the insulation weight 33%～57% of cable, improved flexibility and the easily laying installation of cable.
The material that the utility model has changed high temperature-resistant cable insulating barrier forms, and adopts fine silica powder and the mixed uniformly compound material insulation of polytetrafluoroethylene, has reduced manufacturing process difficulty, has improved the production efficiency of high temperature-resistant cable; By pushing stretching mode, make the mentality of designing of teflon insulation high temperature-resistant cable openr, the frequency adaptability of product and environmental suitability strengthen.
Below in conjunction with one, optimize specific embodiment; the utility model is further understood in example explanation and help; but embodiment detail is only for the utility model is described; do not represent the lower whole technical schemes of the utility model design; therefore should not be construed as the restriction to the total technical scheme of the utility model; some are In the view of technical staff; not departing from the unsubstantiality of the utility model design changes; for example, to there is simple the change or replacement of technical characterictic of same or similar technique effect, all belong to the utility model protection range.
Accompanying drawing explanation
The structural profile schematic diagram of high-temperature-resisting coaxial cable for Fig. 1 communication of the present utility model.
The texture edge schematic diagram of high-temperature-resisting coaxial cable for Fig. 2 communication of the present utility model.
In figure: 1 is that metallic inner conductor, 2 is that micropore composite insulation layer, 3 is metal knitted and screen, 4 is restrictive coating.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described:
High temperature resistant same cable for a kind of communication, be followed successively by from inside to outside: along the solid or stranded metallic inner conductor 1 of the central axis longitudinal extension of cable, micropore composite insulation layer 2, metal knitted and screen 3, adopt the restrictive coating 4 of fluorinated ethylene propylene copolymer or low smoke halogen-free flame-retardant polyolefin or polyvinyl chloride, wherein micropore composite insulation layer 2 separates center conductor 1 and metal knitted and screen 3.
The polytetrafluoroethylmaterial material of micropore composite insulation layer 2 for containing fine silica powder.This fine silica powder material is that particle diameter is the amorphous silica of 5～15 μ m, and its dielectric constant, for being 3.2～3.4, needs to use silane resin acceptor kh-550 to show to process to it before mixing with polytetrafluoroethylene powder, removes it and shows polarity.In this compound inslation, the ratio of amorphous silica micro mist is 30%～60%, and the content of polytetrafluoroethylene is 40%～70%.Micropore gap in described composite insulation layer is between 30%～60%, and realizing composite insulation layer dielectric constant is between 1.5～1.8.
The material of center conductor 1 can be solid metallic conductor, as: bare copper wire, tinned wird, silver-coated copper wire, copper covered steel wire, silver-copper plated steel clad wire, soft beryllium copper line, silver-colored envelope curve etc.; Also can be stranded metallic inner conductor, material behavior meets: meet GB/T3956 or GJB1640;
The material of micropore composite insulation layer 2 is the materials such as amorphous silica micro mist, polytetrafluoroethylene;
The material of outer conductor 3 is, braiding single line, and its material is identical with inner wire solid material, also can select galvanized steel wire;
The material of restrictive coating 4 is the materials such as fluorinated ethylene propylene copolymer.
The material of micropore composite insulation layer 2 forms most important to the structure of this kind of high temperature resistant telecommunication cable.Can require to carry out design modifying to insulating material mixed proportion and voidage according to cable core structure, environment for use and communication performance.
In traditional Teflom Insulation Material, add amorphous silica micro mist, its technical basis is: by filling and polytetrafluoroethylmaterial material characteristic close, but cheap amorphous silica micro mist, improve the mobile performance under the molten condition of polytetrafluoroethylene, through mould, push to stretch and form composite microporous insulation system, reduce the dielectric constant of insulation, improve the HF communication performance of coaxial cable.Amorphous silica and polytetrafluoroethylmaterial material characteristic are more as shown in table 1:
Table 1 amorphous silica and the comparison of polytetrafluoroethylmaterial material characteristic
| Project | Amorphous silica micro mist | Polytetrafluoroethylene |
| Dielectric constant | 3.2～3.4 | 2.1 |
| Thermal coefficient of expansion (/ ℃) | 3.5×10 -4 | 1.2×10 -4（25℃～250℃） |
| Fusing point (℃) | ≥1600 | 327 scholars 10 |
| Average grain diameter (um) | 5～15 | 425 scholars 150 |
| Density (g/cm3) | 2.00～2.27 | 2.17～2.23 |
| Price (ten thousand yuan/ton) | 8～9 | 15～20 |
As can be seen from the above table, amorphous silica micro mist and polytetrafluoroethylene are all exotic materials, and the fusing point of silicon dioxide is higher, in molten state polytetrafluoroethylene, still can keep powder morphology, thereby can reduce the viscosity of molten state polytetrafluoroethylene, improve the mobile performance of composite insulating material under molten state, improved the production efficiency in insulation operation of cable.
Improve the mobile performance of composite insulating material under molten state, be convenient to equally the stretching of insulating material in pushing drawing process, thereby increase the quantity of micropore, improve the foam degrees of compound inslation, reduce dielectric constant, to realize this cable lower decay indices under HF communication.
Simultaneously because the particle diameter of amorphous silica micro mist is much smaller than polytetrafluoroethylene, fusing point is far above polytetrafluoroethylene, both thermal coefficient of expansions, density, dielectric constant are close, add resistance to elevated temperatures, stability and other physical property of material after amorphous silica micro mist and can not have a significant effect.
The showing of amorphous silica micro mist is hydrophily and polarity is strong, need to show modification before mixing, can adopt conventional silane coupler as KH-550, KH560 etc.To guarantee the full and uniform mixing of amorphous silica micro mist and polytetrafluoroethylmaterial material.
Embodiment recited above is described preferred implementation of the present utility model; not design of the present utility model and scope are limited; do not departing under the utility model design concept prerequisite; various modification and improvement that in this area, common engineers and technicians make the technical solution of the utility model; all should fall into protection range of the present utility model, the technology contents that the utility model is asked for protection is all documented in claims.
Claims (8)
1. a communication high-temperature-resisting coaxial cable, it is characterized in that it is followed successively by from inside to outside: along the inner wire (1) of the central axis longitudinal extension of cable, micropore composite insulation layer (2), metal knitted and screen (3), adopt the restrictive coating (4) of fluorinated ethylene propylene copolymer material or low smoke halogen-free flame-retardant polyolefin material or polyvinyl chloride material, wherein micropore composite insulation layer (2) separates inner wire (1) and metal knitted and screen (3).
2. a kind of communication high-temperature-resisting coaxial cable according to claim 1, during the material that it is characterized in that described micropore composite insulation layer (2) forms, fine silica powder is amorphous silica micro mist.
3. a kind of communication high-temperature-resisting coaxial cable according to claim 2, the dielectric constant that it is characterized in that described amorphous silica micro mist is 3.2 to 3.4.
4. a kind of communication high-temperature-resisting coaxial cable according to claim 2, is characterized in that the particle diameter of described amorphous silica micro mist is at 5 μ m to 15 μ m.
5. a kind of communication high-temperature-resisting coaxial cable according to claim 1, is characterized in that described micropore composite insulation layer (2) processes by pushing stretching mode, guarantees that insulating barrier has certain even space, forms micropore composite construction.
6. a kind of communication high-temperature-resisting coaxial cable according to claim 1, is characterized in that micropore gap in described composite insulation layer (2) is between 30% to 60%, and realizing micropore composite insulation layer dielectric constant is 1.5 to 1.8.
7. a kind of communication high-temperature-resisting coaxial cable according to claim 1, the material that it is characterized in that described center conductor (1) is solid metallic conductor: bare copper wire, tinned wird, silver-coated copper wire, copper covered steel wire, silver-copper plated steel clad wire or soft beryllium copper line or silver-colored envelope curve.
8. a kind of communication high-temperature-resisting coaxial cable according to claim 1, the material that it is characterized in that described center conductor (1) is stranded metallic inner conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766750.0U CN203721377U (en) | 2013-11-28 | 2013-11-28 | Coaxial cable resistant to high temperature for communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766750.0U CN203721377U (en) | 2013-11-28 | 2013-11-28 | Coaxial cable resistant to high temperature for communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721377U true CN203721377U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320766750.0U Expired - Lifetime CN203721377U (en) | 2013-11-28 | 2013-11-28 | Coaxial cable resistant to high temperature for communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721377U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319008A (en) * | 2014-10-29 | 2015-01-28 | 江苏俊知技术有限公司 | High-temperature-resistant low-loss compound insulation coaxial cable |
| CN105632599A (en) * | 2014-11-04 | 2016-06-01 | 富士康(昆山)电脑接插件有限公司 | Cable |
| CN115331868A (en) * | 2022-07-15 | 2022-11-11 | 广东南缆电缆有限公司 | Extrusion type silica insulation fire-resistant cable |
-
2013
- 2013-11-28 CN CN201320766750.0U patent/CN203721377U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319008A (en) * | 2014-10-29 | 2015-01-28 | 江苏俊知技术有限公司 | High-temperature-resistant low-loss compound insulation coaxial cable |
| CN105632599A (en) * | 2014-11-04 | 2016-06-01 | 富士康(昆山)电脑接插件有限公司 | Cable |
| CN115331868A (en) * | 2022-07-15 | 2022-11-11 | 广东南缆电缆有限公司 | Extrusion type silica insulation fire-resistant cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
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| CX01 | Expiry of patent term |