CN109215868A - A kind of communication cable - Google Patents
A kind of communication cable Download PDFInfo
- Publication number
- CN109215868A CN109215868A CN201811134926.4A CN201811134926A CN109215868A CN 109215868 A CN109215868 A CN 109215868A CN 201811134926 A CN201811134926 A CN 201811134926A CN 109215868 A CN109215868 A CN 109215868A
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- Prior art keywords
- shield
- layer
- external shielding
- shielding layer
- oxide
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a kind of communication cables; including conductor, insulation, internal shield, strengthening core, filling protection, external shielding layer, protection overcoat; insulating layer is polyethylene layer, and sheath is polyethylene or vinyl chloride sheath, and internal shield and external shielding layer are prepared using composite electromagnetic shield materials.The present invention uses double shield layer structure, can preferably increase shield effectiveness, and secondly internal shield and external shielding layer are prepared using composite electromagnetic shield materials, and effectiveness is good.
Description
Technical field
The present invention relates to a kind of communication cables.
Background technique
Electromagnetic wave is the major way that electromagnetic energy is propagated, when high-frequency circuit works, the outside radiated electromagnetic wave of meeting, to neighbouring
Other equipment generate interference.On the other hand, the various electromagnetic waves in space can also sense in circuit, interfere to circuit.
The effect of electromagnetic shielding is turned off electromagnetic wave propagation approach, to eliminate interference.In many hands for solving electromagnetic interference problem
Duan Zhong, electromagnetic shielding are most basic and effective.Cable shields electromagnetism letter by the way of metal mesh or metal foil paper package
Number, but the mode of this shielding suffers from the drawback that material cost is high, manufacturing procedure is complicated, low efficiency, and if long-term
Frequent bending be easy to make localized metallic net or metal foil paper to be broken, cause shield effectiveness to decline, there are also the wire strippings in wiring
It bothers and the hidden danger of metal mesh, metal foil paper and the short circuit of other circuit junctions easily occurs.To communication electricity, cable produces power cable at present
Raw magnetic coupling induced voltage will interfere the weak electric signal transmitted in communication cable, influence the normal work of communication cable
Make.This is electromagnetic interference of the apparent strong power system to weak electricity system.And major part does not carry out itself in existing power cable
The design of magnetic screen.The shielded layer that only some magnetic screen power cables use is wire mesh, higher cost, and to reality
The Magnetic Shielding Effectiveness in the magnetic field generated in transmission power process is undesirable, and the purpose of electromagnetic shielding is not achieved.
Summary of the invention
Present invention is primarily aimed at a kind of communication cable is provided, effectiveness is good.
To achieve the goals above, the technical scheme is that a kind of communication cable, it is characterised in that: including conductor,
Insulation, internal shield, strengthening core, filling protection, external shielding layer, protection overcoat.
The insulating layer is polyethylene layer.
The sheath is polyethylene or vinyl chloride sheath.
The internal shield and external shielding layer is prepared using composite electromagnetic shield materials.
The present invention uses double shield layer structure, can preferably increase shield effectiveness, and secondly internal shield and external shielding layer are adopted
It is prepared with composite electromagnetic shield materials, zinc-manganese iron clad metal sheet is prepared using microwave sintering method, using microwave in high band
Microwave energy, is directly converted to the thermal energy of material itself by the frequency of 2450MHz, and not only making heating, more rapidly sintering temperature is low, and
And it is more evenly fine and close, so that electromagnet shield effect is substantially increased, the magnetic shielding material rear substrate in-situ metal oxygen of secondary hardening
The metal screen layer and zinc-manganese iron metal composite oxide two parts of change form, wherein metal oxide and the good knot of binder
Closing characteristic can ensure that subsequent electroplated layer has excellent bond strength；It can be assigned doped with the composite electrolyte of cobalt nitrate and nickel nitrate
While giving the iron-based material of zinc-manganese advantageous weatherability, the magnetic conductivity of material, the Magnetic Shielding Effectiveness of strengthening material are improved.This
Inventing electromagnetic shielding material obtained has the characteristics that the high Magnetic Shielding Effectiveness of shielded layer even compact, magnetic conductivity is good, can meet electricity
Requirement of the fields such as line cable for different magnetic shielding materials.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure: 1 conductor, 2 insulating layers, 3 internal shields, 4 strengthening cores, 5 filling protections, 6 external shielding layers, 7 protection overcoats.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention；Technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously；Described embodiments are only a part of the embodiments of the present invention；Instead of all the embodiments.It is based on
Embodiment in the present invention；It is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment；It shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of communication cable, it is characterised in that: including conductor, insulating layer, internal shield, strengthening core, fill out
Fill protection, external shielding layer, protection overcoat.Conductor, insulation, internal shield form a communication core, at least one is logical in cable
Believe core, general 3-9 communication core, each at least one conductor 1 of communication core, the present embodiment attached drawing is 2 conductors,
The insulating layer is polyethylene layer.
The sheath is polyethylene or vinyl chloride sheath.
The internal shield and external shielding layer is prepared using composite electromagnetic shield materials.
Internal shield and external shielding layer are prepared using composite electromagnetic shield materials, and it is multiple to prepare zinc-manganese iron using microwave sintering method
It closes metal plate and microwave energy is directly converted to the thermal energy of material itself, not only using microwave in the frequency of high band 2450MHz
Making heating, more rapidly sintering temperature is low, and more evenly fine and close, so that electromagnet shield effect is substantially increased, the magnetic of secondary hardening
The metal screen layer and zinc-manganese iron metal composite oxide two parts composition of shielding material rear substrate in-situ metal oxidation, wherein gold
Belonging to oxide and the good binding characteristic of binder can ensure that subsequent electroplated layer has excellent bond strength；Doped with cobalt nitrate
While the iron-based material of zinc-manganese advantageous weatherability can be assigned with the composite electrolyte of nickel nitrate, the magnetic conductivity of material is improved,
The Magnetic Shielding Effectiveness of strengthening material.It is prepared as follows:
Embodiment 1
The preparation methods of composite electromagnetic shield materials the following steps are included:
Step 1, configuration oxidation trough electrolyte, are added 0.5 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；
Step 2 clamps the manganese iron clad metal sheet of quasi- processing by frock clamp, is subsequently placed in the oxygen equipped with above-mentioned electrolyte
Change in slot, and as anode, using stainless steel substrates as cathode, make pulse power supply carries out differential arc oxidation；
Step 3, oxidation process crossing current setting average current density 5A/dm2, frequency 1000Hz, 160 μ s of pulse width, oxygen
Change time 5min, oxidation terminates to form one layer of compact metal shielded layer in composition metal plate surface:
Clad metal sheet after step 3 micro-arc oxidation treatment is placed in rinsing bowl and washes by step 4, washing time 1min,
15 DEG C of washing temperature；
Clad metal sheet after above-mentioned washing is placed in solidification drying unit, 240 DEG C of drying temperature, drying time by step 5
8min, the electromagnetic shielding material after being dried.
The zinc-manganese iron clad metal sheet the preparation method is as follows:
6 parts of zinc oxide, 2 parts of manganese oxide, 12 parts of iron oxide are uniformly mixed by step 1 under mechanical stirring, are placed in sintering furnace
Pre-burning 100min at 800 DEG C is down to room temperature and obtains being pre-sintered mixture；
0.2 part of tungsten oxide and 1 part of molybdenum oxide and 8 parts of deionized waters are added into above-mentioned pre-sintering mixture for step 2, are placed in
It is sanded in sand mill, stirring is slurried；
Above-mentioned slurry progress mist projection granulating is obtained moistening among dry tack free with good mobility and dispersibility by step 3
Particle mixture；
Step 4, to above-mentioned particle mixture be added 1 part of poly (vinyl alcohol) binder, dry-pressing at sheet standard sample material；
Then standard sample is placed in saggar by step 5, be put into industrial microwave roller way kiln and carry out microwave sintering, be sintered function
Rate controls the energy consumption in 70 KW, is promoted with the speed of 2m/h；
Step 6 carries out dumping processing at 250 DEG C, and 1250 DEG C of Carbon monoxide reduction sintering, heat preservation sintering 1.5 is small at high temperature
When continuous sintering standard sample material drop to room temperature with 300 DEG C/h using the cooling product of nitrogen protection and obtain zinc-manganese iron composition metal
Plate.
Embodiment 2
Step 1, configuration oxidation trough electrolyte, are added 0.4 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 3
Step 1, configuration oxidation trough electrolyte, are added 0.3 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 4
Step 1, configuration oxidation trough electrolyte, are added 0.2 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 5
Step 1, configuration oxidation trough electrolyte, are added 0.1 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 6
Step 1, configuration oxidation trough electrolyte, are added 0.6 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 7
Step 1, configuration oxidation trough electrolyte, are added part cobalt nitrate, 0.7 part of nickel nitrate, 3 parts of silicic acid in 100 parts of deionized waters
Sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as embodiment 1.
Embodiment 8
Step 1, configuration oxidation trough electrolyte, are added 0.8 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 9
Step 1, configuration oxidation trough electrolyte, are added 0.9 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicon in 100 parts of deionized waters
Sour sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；Remaining step is the same as implementation
Example 1.
Embodiment 10
Step 1, configuration oxidation trough electrolyte, are added 1 part of cobalt nitrate, 0.1 part of nickel nitrate, 3 parts of silicic acid in 100 parts of deionized waters
Sodium and 9 parts of calgons, are ultrasonically treated 10min at room temperature, obtain evenly dispersed electrolyte；The same embodiment of remaining step
1。
Reference examples 1
It is with 1 difference of embodiment: in electromagnetic shielding material preparation step 1, cobalt nitrate be not added as electrolyte, remaining
Step is identical with embodiment 1.
Reference examples 2
It is with 1 difference of embodiment: in electromagnetic shielding material preparation step 1, nickel nitrate be not added as electrolyte, remaining
Step is identical with embodiment 1.
Reference examples 3
Be with 1 difference of embodiment: in electromagnetic shielding material preparation step 1, sodium metasilicate and calgon quality proportioning are
1:1, remaining step are identical with embodiment 1.
Reference examples 4
Be with 1 difference of embodiment: in electromagnetic shielding material preparation step 1, sodium metasilicate and calgon quality proportioning are
3:1, remaining step are identical with embodiment 1.
Reference examples 5
It is with 1 difference of embodiment: in zinc-manganese iron clad metal sheet preparation step 1, uses two-component manganese oxide and iron oxide
As premix, remaining step is identical with embodiment 1.
Reference examples 6
It is with 1 difference of embodiment: in zinc-manganese iron clad metal sheet preparation step 1, uses two-component zinc oxide and iron oxide
As premix, remaining step is identical with embodiment 1.
Reference examples 7
It is with 1 difference of embodiment: in zinc-manganese iron clad metal sheet preparation step 1, does not add iron oxide mixing；Remaining step
Suddenly identical with embodiment 1.
Reference examples 8
It is with 1 difference of embodiment: in zinc-manganese iron clad metal sheet preparation step 1, replaces iron oxide with the copper oxide of equivalent；
Remaining step is identical with embodiment 1.
Reference examples 9
Be with 1 difference of embodiment: in zinc-manganese iron clad metal sheet preparation step 2, not adding tungsten oxide, remaining step with
Embodiment 1 is identical.
Reference examples 10
Be with 1 difference of embodiment: in zinc-manganese iron clad metal sheet preparation step 2, not adding molybdenum oxide, remaining step with
Embodiment 1 is identical.
Electromagnetic shielding performance by the sample of preparation in 8-12GHz frequency range is tested.Radio frequency electromagnetic field shield effectiveness
It is measured using Agilent 4396B network/spectrum/impedance analyzer, using SJ20524-1995, " Materials ' Shielding Effectiveness is surveyed
Method for testing "；It is as shown in the table for test result
The experimental results showed that composite electromagnetic shield materials of the present invention have good Magnetic Shielding Effectiveness, in the timing of test condition one,
Shield effectiveness (SE) is higher, and Magnetic Shielding Effectiveness is better, otherwise poorer；When cobalt nitrate, nickel nitrate mass ratio are 5:1, other are matched
Material is fixed, and preparation effect is best, with embodiment 1 the difference lies in that embodiment 2 to embodiment 10 changes primary raw material nitric acid respectively
The dosage and proportion of cobalt, nickel nitrate, although having certain improvement to material electromagnetic wave shielding, the effect not as good as embodiment 1 is more preferable；
For the cobalt nitrate or nickel nitrate that reference examples 1 to reference examples 2 use one-component as electrolyte metal salt component, other steps are complete
It is identical, cause shield effectiveness to be substantially reduced, it is preferable to illustrate that the combined electrolysis solution of the two improves material electromagnetic shielding performance；Reference examples
3 change to 4 sodium metasilicate of reference examples and calgon quality proportioning, and effectiveness is still bad, illustrate to be electrolysed oxygen
Proportion is critically important both during change；Reference examples 5 to reference examples 8 do not add zinc oxide and manganese oxide, and are replaced with copper oxide
Iron oxide, so that zinc-manganese iron clad metal sheet structure composition changes, Magnetic Shielding Effectiveness is obviously deteriorated, and illustrates three kinds of metal oxides
The compound electromagnetic shielding performance for material improves more obvious；Reference examples 9 to reference examples 10 do not add molybdenum oxide and tungsten oxide, multiple
The property that alloy belongs to changes, and shield effectiveness is obviously deteriorated, and shield effectiveness is not still high, although illustrating molybdenum oxide and tungsten oxide
Dosage is few but modified effect is obvious；Therefore there is excellent effectiveness using composite electromagnetic shield materials of the present invention.
Claims (4)
1. a kind of communication cable, it is characterised in that: including conductor, insulating layer, internal shield, strengthening core, filling, external shielding layer and
Protection overcoat；Conductor, insulating layer, internal shield form a communication core, are external shielding layer on the outside of communication core, communicate core
It is filling between external shielding layer, is protection overcoat on the outside of external shielding layer.
2. a kind of communication cable according to claim 1, it is characterised in that: the insulating layer is polyethylene layer.
3. a kind of communication cable according to claim 1, it is characterised in that: the sheath is that polyethylene or vinyl chloride protect
Set.
4. a kind of communication cable according to claim 1, it is characterised in that: the internal shield and external shielding layer use
Composite electromagnetic shield materials preparation, primary raw material be cobalt nitrate, nickel nitrate, sodium metasilicate, calgon, zinc oxide, molybdenum oxide,
Iron oxide, tungsten oxide, manganese oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134926.4A CN109215868A (en) | 2018-09-28 | 2018-09-28 | A kind of communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134926.4A CN109215868A (en) | 2018-09-28 | 2018-09-28 | A kind of communication cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109215868A true CN109215868A (en) | 2019-01-15 |
Family
ID=64981962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811134926.4A Pending CN109215868A (en) | 2018-09-28 | 2018-09-28 | A kind of communication cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690296A (en) * | 2020-07-22 | 2020-09-22 | 广东一纳科技有限公司 | Composite carbon material ink and preparation method and application thereof |
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|---|---|---|---|---|
| CN1787114A (en) * | 2005-12-06 | 2006-06-14 | 安泰科技股份有限公司 | Composite electromagnetic screen film material and mfg. method thereof |
| CN105374456A (en) * | 2015-11-24 | 2016-03-02 | 江苏赛特电气有限公司 | Photoelectric composite cable |
| CN205564356U (en) * | 2016-04-12 | 2016-09-07 | 高大伟 | Communication cable |
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2018
- 2018-09-28 CN CN201811134926.4A patent/CN109215868A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787114A (en) * | 2005-12-06 | 2006-06-14 | 安泰科技股份有限公司 | Composite electromagnetic screen film material and mfg. method thereof |
| CN105374456A (en) * | 2015-11-24 | 2016-03-02 | 江苏赛特电气有限公司 | Photoelectric composite cable |
| CN205564356U (en) * | 2016-04-12 | 2016-09-07 | 高大伟 | Communication cable |
Non-Patent Citations (2)
| Title |
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| 李俊 等: "微波烧结高磁导率Mn-Zn铁氧磁体材料的研究", 《工艺•技术•应用》 * |
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| CN111690296A (en) * | 2020-07-22 | 2020-09-22 | 广东一纳科技有限公司 | Composite carbon material ink and preparation method and application thereof |
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