CN105976906A - High temperature resistance cable based on alumina fibers and preparation method thereof - Google Patents
High temperature resistance cable based on alumina fibers and preparation method thereof Download PDFInfo
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- CN105976906A CN105976906A CN201610522329.3A CN201610522329A CN105976906A CN 105976906 A CN105976906 A CN 105976906A CN 201610522329 A CN201610522329 A CN 201610522329A CN 105976906 A CN105976906 A CN 105976906A
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- silver
- aramid fiber
- fiber yarn
- insulating barrier
- high temperature
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- 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
- H01B13/02—Stranding-up
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- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/222—Sheathing; Armouring; Screening; Applying other protective layers by electro-plating
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- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2606—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by braiding
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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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ropes Or Cables (AREA)
Abstract
The invention discloses a high temperature resistance cable based on alumina fibers and a preparation method thereof. The high temperature resistance cable includes a plurality of core of table units which are intertwisted. The outside of each core of table unit is sleeved with a silver plated aramid fiber filament sleeve. The silver plated aramid fiber filament sleeve is filled with alumina fibers. The outside of the silver plated aramid fiber filament sleeve is successively provided from inside to outside with a first insulating layer, a boundary layer and a second insulating layer. The first insulating layer is an acrylonitrile-butadiene-acrylic acid ester copolymer layer. The boundary layer is filled with nanometer beryllias. The second insulating layer is an ethane-tetrafluoroethene copolymer layer. The preparation method can produce cables which exhibit excellent high temperature resistance.
Description
Technical field
The present invention relates to insulated cable, in particular it relates to a kind of high temperature-resistant cable based on magnesia fibers
And preparation method thereof.
Background technology
Cable is typically by the cable of similar rope of several or several groups wire strandings, often group wire it
Between mutually insulated, and be often twisted into round a center, whole outside is surrounded by the cover layer of high-insulation.
It is erected at aerial more or is contained in underground, the bottom, for telecommunication or power transmission.Cable is mainly by following 4
Part composition, 1. conducting wire center: make with high conductivity material (copper or aluminum).According to laying use bar
The part requirement to cable softness, the every line heart may be formed by solid conductor or multiple conducting wires are stranded.
2. insulating barrier: the insulant as cable should have high insulation resistance, high breakdown field strength
, low dielectric loss and low dielectric constant.Insulant conventional in cable has oil-paper, polychlorostyrene second
Alkene, polyethylene, crosslinked polyethylene, rubber etc..Cable is often classified with insulant, and such as oil-paper is exhausted
Edge cable, polyvinyl chloride cable, twisted polyethylene cable etc..3. sealing sheath: the protection covered wire heart is exempted from
Damage by machinery, moisture, moisture, chemical substance, light etc..For the insulation of moisture-sensitive, typically adopt
With lead or aluminium extrusion sealing sheath.4. cover layer is protected: in order to protect sealing sheath from mechanical damage.
Sheath is outer (claims armouring electricity typically to use galvanized steel strip, steel wire or copper strips, copper wire etc. to surround as armor
Cable), armor plays electric field shielding simultaneously and prevents the effect of external electromagnetic wave interference.
Although existing cable can disclosure satisfy that in most of occasion and produce and the demand of life, but
Being under the high temperature conditions, the performance of cable is negatively affected the most greatly.
Summary of the invention
It is an object of the invention to provide a kind of high temperature-resistant cable based on magnesia fibers and preparation method thereof,
The cable prepared by the method has resistance to elevated temperatures and the mechanical property of excellence.
To achieve these goals, the invention provides a kind of high temperature-resistant cable based on magnesia fibers,
This high temperature-resistant cable includes the most stranded multi cord core unit, and the outer cover of multi cord core unit is provided with plating
Silver aramid fiber yarn wired tube, is filled with magnesia fibers in silver-plated aramid fiber yarn wired tube；Silver-plated aramid fiber yarn weaves
The outside of set is disposed with the first insulating barrier, critical layer and the second insulation along direction from inside to outside
Layer；First insulating barrier is acrylonitrile-butadiene-acrylate copolymer layer, and critical layer is filled with nano oxygen
Changing beryllium, the second insulating barrier is ethylene-tetrafluoroethylene copolymer layer.
Preferably, a diameter of 0.85-0.90mm of silver-plated aramid fiber yarn wired tube, the thickness of the first insulating barrier
For 0.15-0.20mm, the thickness of critical layer is 0.05-0.12mm, and the thickness of the second insulating barrier is
0.20-0.25mm。
Preferably, the thickness of the silver coating on the outer surface of the silver-plated aramid fiber yarn in silver-plated aramid fiber yarn establishment set
For 1-2 μm.
Preferably, on the basis of the area of the cross section of silver-plated aramid fiber yarn wired tube, silver-plated aramid fiber yarn weaves
The area that in the cross section of set, magnesia fibers is occupied is 35-45%.
Preferably, core unit includes the most stranded multiply silver-gilt copper wire, the outside of multiply silver-gilt copper wire
Being provided with protective layer, protective layer is filled by polystyrene and is formed.
Preferably, a diameter of 0.05-0.08mm of silver-gilt copper wire, a diameter of 0.20-0.30mm of protective layer.
Preferably, the thickness of the silver coating of the outer surface of multiply silver-gilt copper wire is 0.5-0.9 μm.
Present invention also offers the preparation method of a kind of above-mentioned high temperature-resistant cable based on magnesia fibers,
This preparation method includes:
1) by the most stranded for multi cord core unit, then silver-plated aramid fiber yarn wired tube is sheathed on multi cord
The outside of core unit, then fills magnesia fibers with the inside to silver-plated aramid fiber yarn wired tube；
2) acrylonitrile-butadiene-acrylate copolymer is extruded in the outside of silver-plated aramid fiber yarn wired tube with
Forming the first insulating barrier, the surface that nano oxidized beryllium is then embedded at the first insulating barrier forms critical layer,
Then ethylene-tetrafluoroethylene copolymer is extruded and form the second insulating barrier with system in the outside of the first insulating barrier
Obtain high temperature-resistant cable based on magnesia fibers.
Preferably, in step 1) before, method also includes: be soaked in acid solution by aramid fiber yarn, then
Take out and plate on the outer surface of aramid fiber yarn silver layer with prepare silver-plated aramid fiber yarn, then by silver-plated aramid fiber yarn
It is woven into silver-plated aramid fiber yarn wired tube.
Preferably, one or more in hydrochloric acid solution, salpeter solution and sulfuric acid solution of acid solution；And
And, the concentration of acid solution is 50-70 weight %.
According to technique scheme, the present invention is by setting gradually magnesium oxide in the outside of multi cord core unit
Fiber, silver-plated aramid fiber yarn wired tube, the first insulating barrier, critical layer and the second insulating barrier, by each parts
Synergism make this cable have excellence resistance to elevated temperatures and mechanical property；Especially, critical layer
In nano oxidized beryllium can spread in the first insulating barrier and the second insulating barrier and then make the first insulation
Layer forms one with the second insulating barrier and then improves both single insulating properties and mechanical property.Respectively
Under the synergism of layer, especially magnesia fibers so that prepared cable has the heat-resisting quantity of excellence
Energy and mechanical property.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with
Detailed description below is used for explaining the present invention together, but is not intended that limitation of the present invention.?
In accompanying drawing:
Fig. 1 is that the high temperature-resistant cable based on magnesia fibers that the present invention provides obtains structural representation.
Description of reference numerals
1, core unit 2, silver-gilt copper wire
3, silver coating 4, protective layer
5, magnesia fibers 6, silver-plated aramid fiber yarn wired tube
7, the first insulating barrier 8, critical layer
9, the second insulating barrier
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that
Detailed description of the invention described herein is merely to illustrate and explains the present invention, is not limited to this
Bright.
In the present invention, in the case of illustrating on the contrary, " inside and outside " etc. is included in term
The noun of locality only represents this term orientation under normal service condition, or is skilled artisan understands that
It is commonly called as, and is not construed as the restriction to this term.
The invention provides a kind of high temperature-resistant cable based on magnesia fibers, as it is shown in figure 1, this resistance to height
Temperature cable includes the most stranded multi cord core unit 1, and the outer cover of multi cord core unit 1 is provided with silver-plated
Aramid fiber yarn wired tube 6, is filled with magnesia fibers 5 in silver-plated aramid fiber yarn wired tube 6；Silver-plated aramid fiber yarn
The outside of wired tube 6 is disposed with the first insulating barrier 7, critical layer 8 and along direction from inside to outside
Second insulating barrier 9；First insulating barrier 7 is acrylonitrile-butadiene-acrylate copolymer layer, critical layer 8
Being filled with nano oxidized beryllium, the second insulating barrier 9 is ethylene-tetrafluoroethylene copolymer layer.
The outside of above-mentioned multi cord core unit 1 sets gradually magnesia fibers 5, the braiding of silver-plated aramid fiber yarn
Set the 6, first insulating barrier 7, critical layer 8 and the second insulating barrier 9, made by the synergism of each parts
This cable has the insulating properties of excellence, and meanwhile, this cable can keep excellent in rugged environment
Stability；Wherein, the nano oxidized beryllium in critical layer 8 can be to the first insulating barrier 7 and the second insulating barrier
Spread and then make the first insulating barrier 7 and the second insulating barrier 9 form one and then improve both lists in 9
Only insulating properties.Meanwhile, this cable has the stability of excellence, it is possible to keep in rugged environment
Stable performance, and then ensure that it can steady operation.
In the present invention, silver-plated aramid fiber yarn wired tube the 6, first insulating barrier 7, critical layer 8 and second are exhausted
The size of edge layer 9 can select in wide scope, but in order to improve the heat-resisting quantity of cable further
Can, it is preferable that a diameter of 0.85-0.90mm of silver-plated aramid fiber yarn wired tube 6, the first insulating barrier 7
Thickness is 0.15-0.20mm, and the thickness of critical layer 8 is 0.05-0.12mm, the thickness of the second insulating barrier 9
For 0.20-0.25mm.
Meanwhile, the thickness of the silver coating of the silver-plated aramid fiber yarn in silver-plated aramid fiber yarn establishment set can be at wide model
Enclose interior adjustment, but in order to improve capability of electromagnetic shielding and the stability of cable further, it is preferable that
The thickness of the silver coating on the outer surface of the silver-plated aramid fiber yarn in silver-plated aramid fiber yarn establishment set is 1-2 μm.
Additionally, in this cable, the content of magnesia fibers 5 can change in wide scope, but
So that magnesia fibers 5 can be fully filled between multi cord core unit 1 and core unit
Between 1 and silver-plated aramid fiber yarn wired tube 6, it is preferable that with the cross section of silver-plated aramid fiber yarn wired tube 6
On the basis of area, the area that in the cross section of silver-plated aramid fiber yarn wired tube 6, magnesia fibers 5 is occupied is
35-45%.
On the basis of the above, the concrete knot of core unit 1 can select in wide scope, but
It is to improve the stability of the signal during wired signal transmission and the transmission quality of signal, preferably
Ground, core unit 1 includes the most stranded multiply silver-gilt copper wire 2, and the outside of multiply silver-gilt copper wire 2 sets
Being equipped with protective layer 4, protective layer 4 is filled by polystyrene and is formed.So, can be filled by polystyrene
Divide ground to come insulating between each core unit 1, and then ensure that each single core unit 1 can
Transmit and do not result in interference, preferably between different signals, and the signal of each core unit 1 transmission
Ground, a diameter of 0.05-0.08mm of silver-gilt copper wire 2, a diameter of 0.20-0.30mm of protective layer 4.
Additionally, the thickness of the silver coating 3 of multiply silver-gilt copper wire 2 can select in wide scope, but
In order to improve the signal transmission performance of multiply silver-gilt copper wire 2, it is preferable that the appearance of multiply silver-gilt copper wire 2
The thickness of the silver coating 3 in face is 0.5-0.9 μm.
Present invention also offers the preparation method of a kind of above-mentioned high temperature-resistant cable based on magnesia fibers,
This preparation method includes:
1) by the most stranded for multi cord core unit 1, then silver-plated aramid fiber yarn wired tube 6 is sheathed on many
The outside of strand core unit 1, then fills magnesia fibers 5 to silver-plated aramid fiber yarn wired tube 6
Portion；
2) acrylonitrile-butadiene-acrylate copolymer is extruded in the outside of silver-plated aramid fiber yarn wired tube 6
To form the first insulating barrier 7, the surface formation that nano oxidized beryllium is then embedded at the first insulating barrier 7 is faced
Interlayer 8, then extrudes the outside formation second in the first insulating barrier 7 exhausted by ethylene-tetrafluoroethylene copolymer
Edge layer 9 is to prepare high temperature-resistant cable based on magnesia fibers.
In the preparation process in accordance with the present invention, silver-plated aramid fiber yarn wired tube 6 can be by this area any one
Plant conventional method to be prepared, but in order to improve the capability of electromagnetic shielding of silver-plated aramid fiber yarn wired tube 6,
Preferably, in step 1) before, the method also includes: is soaked in acid solution by aramid fiber yarn, then takes
Go out and plate on the outer surface of aramid fiber yarn silver layer with prepare silver-plated aramid fiber yarn, then silver-plated aramid fiber yarn is compiled
It is made into silver-plated aramid fiber yarn wired tube 6.
It addition, the kind of acid solution and concentration can also select in wide scope, but in order to carry further
The anti-electromagnetic interference capability of the high silver-plated aramid fiber yarn wired tube 6 prepared, it is preferable that acid solution is molten selected from hydrochloric acid
One or more in liquid, salpeter solution and sulfuric acid solution；Further, the concentration of acid solution is 50-70 weight
%.
The present invention is further illustrated by the following examples.
Preparation example 1
The aramid fiber yarn of a diameter of 0.10mm is soaked in the acid solution (hydrochloric acid solution) of 60 weight %, connects
Taking-up and on the outer surface of aramid fiber yarn, plate silver layer (thickness of silver coating is 1.5 μm) with prepared plating
Silver aramid fiber yarn, is then woven into silver-plated aramid fiber yarn wired tube 6 (a diameter of 0.88mm) by silver-plated aramid fiber yarn.
Embodiment 1
1) by multiply silver-gilt copper wire 2 (a diameter of 0.07mm, the thickness of silver coating 3 is 0.7 μm) phase
The most stranded, then polystyrene is extruded and form protective layer 4 (diameter in the outside of multiply silver-gilt copper wire 2
For 0.25mm) with prepared core unit；
2) by the most stranded for multi cord core unit, then silver-plated aramid fiber yarn wired tube is sheathed on multi cord
The outside of core unit, then fills magnesia fibers with the inside of extremely silver-plated aramid fiber yarn wired tube (with silver-plated
On the basis of the area of the cross section of aramid fiber yarn wired tube 6, oxygen in the cross section of silver-plated aramid fiber yarn wired tube 6
The area that change magnesium fiber 5 occupies is 40%)；
3) acrylonitrile-butadiene-acrylate copolymer is extruded in the outside of silver-plated aramid fiber yarn wired tube with
Form the first insulating barrier 7 (thickness is 0.18mm), then nano oxidized beryllium is embedded at the first insulating barrier
Surface formed critical layer 8 (thickness is 0.08mm), then ethylene-tetrafluoroethylene copolymer is extruded
Outside in the first insulating barrier forms the second insulating barrier 9 (thickness is 0.22mm) with prepared based on oxidation
The high temperature-resistant cable A1 of magnesium fiber.
Embodiment 2
1) by multiply silver-gilt copper wire 2 (a diameter of 0.05mm, the thickness of silver coating 3 is 0.5 μm) phase
The most stranded, then polystyrene is extruded and form protective layer 4 (diameter in the outside of multiply silver-gilt copper wire 2
For 0.20mm) with prepared core unit；
2) by the most stranded for multi cord core unit, then silver-plated aramid fiber yarn wired tube is sheathed on multi cord
The outside of core unit, then fills magnesia fibers with the inside of extremely silver-plated aramid fiber yarn wired tube (with silver-plated
On the basis of the area of the cross section of aramid fiber yarn wired tube 6, oxygen in the cross section of silver-plated aramid fiber yarn wired tube 6
The area that change magnesium fiber 5 occupies is 35%)；
3) acrylonitrile-butadiene-acrylate copolymer is extruded in the outside of silver-plated aramid fiber yarn wired tube with
Form the first insulating barrier 7 (thickness is 0.15mm), then nano oxidized beryllium is embedded at the first insulating barrier
Surface formed critical layer 8 (thickness is 0.05mm), then ethylene-tetrafluoroethylene copolymer is extruded
Outside in the first insulating barrier forms the second insulating barrier 9 (thickness is 0.20mm) with prepared based on oxidation
The high temperature-resistant cable A2 of magnesium fiber.
Embodiment 3
1) by multiply silver-gilt copper wire 2 (a diameter of 0.08mm, the thickness of silver coating 3 is 0.9 μm) phase
The most stranded, then polystyrene is extruded and form protective layer 4 (diameter in the outside of multiply silver-gilt copper wire 2
For 0.30mm) with prepared core unit；
2) by the most stranded for multi cord core unit, then silver-plated aramid fiber yarn wired tube is sheathed on multi cord
The outside of core unit, then fills magnesia fibers with the inside of extremely silver-plated aramid fiber yarn wired tube (with silver-plated
On the basis of the area of the cross section of aramid fiber yarn wired tube 6, oxygen in the cross section of silver-plated aramid fiber yarn wired tube 6
The area that change magnesium fiber 5 occupies is 45%)；
3) acrylonitrile-butadiene-acrylate copolymer is extruded in the outside of silver-plated aramid fiber yarn wired tube with
Form the first insulating barrier 7 (thickness is 0.20mm), then nano oxidized beryllium is embedded at the first insulating barrier
Surface formed critical layer 8 (thickness is 0.12mm), then ethylene-tetrafluoroethylene copolymer is extruded
Outside in the first insulating barrier forms the second insulating barrier 9 (thickness is 0.25mm) with prepared based on oxidation
The high temperature-resistant cable A3 of magnesium fiber.
Comparative example 1
According to the method for embodiment 1 carry out prepare cable B1, except that, in step 3) in do not make
Use nano oxidized beryllium.
Comparative example 2
According to the method for embodiment 1 carry out prepare cable B2, except that, in step 2) in do not make
Use magnesia fibers.
Detection example 1
1) hot strength (σ of above-mentioned cable is detectedt1/ MPa), concrete outcome is shown in Table 1；
2) 10h under conditions of above-mentioned cable being placed in 250 DEG C, then detects the hot strength of cable
(σt2/MPa)；Concrete outcome is shown in Table 1.
Table 1
| σt1/MPa | σt2/MPa | |
| A1 | 74.5 | 73.7 |
| A2 | 74.6 | 73.5 |
| A3 | 74.4 | 73.4 |
| B1 | 62.5 | 48.9 |
| B2 | 62.8 | 47.5 |
By above-described embodiment, comparative example and detection example, the cable that the present invention provides has excellence
Resistance to elevated temperatures and mechanical property.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention does not limit
Detail in above-mentioned embodiment, in the technology concept of the present invention, can be to the present invention
Technical scheme carry out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, various possible compound modes are illustrated by the present invention the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as its
Without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a high temperature-resistant cable based on magnesia fibers, it is characterised in that described high temperature-resistant cable
Including the most stranded multi cord core unit (1), the outer cover of described multi cord core unit (1) is provided with
Silver-plated aramid fiber yarn wired tube (6), is filled with magnesia fibers in described silver-plated aramid fiber yarn wired tube (6)
(5)；The outside of described silver-plated aramid fiber yarn wired tube (6) is disposed with along direction from inside to outside
First insulating barrier (7), critical layer (8) and the second insulating barrier (9)；Described first insulating barrier (7) is
Acrylonitrile-butadiene-acrylate copolymer layer, described critical layer (8) is filled with nano oxidized beryllium, institute
Stating the second insulating barrier (9) is ethylene-tetrafluoroethylene copolymer layer.
High temperature-resistant cable the most according to claim 1, it is characterised in that described silver-plated aramid fiber yarn
A diameter of 0.85-0.90mm of wired tube (6), the thickness of described first insulating barrier (7) is
0.15-0.20mm, the thickness of described critical layer (8) is 0.05-0.12mm, described second insulating barrier (9)
Thickness be 0.20-0.25mm.
High temperature-resistant cable the most according to claim 1 and 2, wherein, described silver-plated aramid fiber yarn is compiled
The thickness of the silver coating on the outer surface of the silver-plated aramid fiber yarn in system set is 1-2 μm.
High temperature-resistant cable the most according to claim 3, it is characterised in that with described silver-plated aramid fiber
On the basis of the area of the cross section of silk wired tube (6), described silver-plated aramid fiber yarn wired tube (6) transversal
The area that in face, magnesia fibers (5) is occupied is 35-45%.
High temperature-resistant cable the most according to claim 1 and 2, it is characterised in that described core list
Unit (1) includes the most stranded multiply silver-gilt copper wire (2), the outside of described multiply silver-gilt copper wire (2)
Being provided with protective layer (4), described protective layer (4) is filled by polystyrene and is formed.
High temperature-resistant cable the most according to claim 5, it is characterised in that described silver-gilt copper wire (2)
A diameter of 0.05-0.08mm, a diameter of 0.20-0.30mm of described protective layer (4).
High temperature-resistant cable the most according to claim 6, it is characterised in that described multiply silver-plated copper
The thickness of the silver coating (3) of the outer surface of silk (2) is 0.5-0.9 μm.
8. based on magnesia fibers the high temperature resistant electricity as described in any one in claim 1-7
The preparation method of cable, it is characterised in that described preparation method includes:
1) by the most stranded for described multi cord core unit (1), then by described silver-plated aramid fiber yarn wired tube
(6) outside of described multi cord core unit (1) it is sheathed on, then by described magnesia fibers (5)
Fill the inside to described silver-plated aramid fiber yarn wired tube (6)；
2) described acrylonitrile-butadiene-acrylate copolymer is extruded in described silver-plated aramid fiber yarn wired tube
(6) described nano oxidized beryllium, to form described first insulating barrier (7), is then embedded at institute by outside
The surface stating the first insulating barrier (7) forms described critical layer (8), then by described ethylene-tetrafluoroethylene
Copolymer extrude in described first insulating barrier (7) outside formed the second insulating barrier (9) with prepare based on
The high temperature-resistant cable of magnesia fibers.
Preparation method the most according to claim 8, it is characterised in that in step 1) before, institute
Method of stating also includes: be soaked in acid solution by aramid fiber yarn, then taking-up the outer surface at described aramid fiber yarn
On plate silver layer with prepare silver-plated aramid fiber yarn, then described silver-plated aramid fiber yarn is woven into described silver-plated aramid fiber
Silk wired tube (6).
The most according to claim 8 or claim 9, preparation method, wherein, described acid solution is molten selected from hydrochloric acid
One or more in liquid, salpeter solution and sulfuric acid solution；Further, the concentration of described acid solution is 50-70
Weight %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522329.3A CN105976906A (en) | 2016-07-06 | 2016-07-06 | High temperature resistance cable based on alumina fibers and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522329.3A CN105976906A (en) | 2016-07-06 | 2016-07-06 | High temperature resistance cable based on alumina fibers and preparation method thereof |
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| CN105976906A true CN105976906A (en) | 2016-09-28 |
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| CN201610522329.3A Pending CN105976906A (en) | 2016-07-06 | 2016-07-06 | High temperature resistance cable based on alumina fibers and preparation method thereof |
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