CN104795136B - High-flame-retardance power cable for supplying power for telecommunication equipment - Google Patents
High-flame-retardance power cable for supplying power for telecommunication equipment Download PDFInfo
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- CN104795136B CN104795136B CN201510014155.5A CN201510014155A CN104795136B CN 104795136 B CN104795136 B CN 104795136B CN 201510014155 A CN201510014155 A CN 201510014155A CN 104795136 B CN104795136 B CN 104795136B
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Abstract
The invention discloses a high-flame-retardance power cable for supplying power for telecommunication equipment. The high-flame-retardance power cable for supplying the power for the telecommunication equipment comprises an inner conductive layer and an outer conductive layer, wherein the inner conductive layer is formed by a plurality of trapezoidal conductors; the outer conductive layer is formed by a plurality of 'Z'-shaped conductors; a polyethylene insulation strap wraps the outer surface of the outer conductive layer in a lapping manner; a polyolefin insulating sheath layer wraps the outer surface of a glass tape; a fire-resistant mica tape wraps outer surfaces of three conductive cores in a lapping manner; and an insulating sheath layer wraps the outer surface of the fire-resistant mica tape and comprises thermoplastic polyurethane elastomer, low-density polyethylene, ethylene-ethyl acrylate, ethylene-butylene copolymer, silicon dioxide, butyronitrile compound, chlorinated polyethylene, zinc stannate and magnesium hydroxide. The conductive performance of the cable is improved, the current-carrying capacity of the cable is increased by 10% or so, the power cable does not combust, is high in heat resistance and is tight and airtight, so that a stable hollow composite carbon structure is formed during combustion of the cable, and secondary combustion and flame propagation of materials are stopped.
Description
Technical field
The present invention relates to a kind of communication power supply cable, more particularly, to a kind of high fire-retardance power supply cable powered for telecommunication apparatus.
Background technology
With quickly propelling of 4g application, the communication power supply flexible cable of base station construction has obtained substantial amounts of popularization and has answered
With being mainly used in the power supply connection exchanging rack.Communication power supply flexible cable does not require nothing more than has good flexibility, so that
Conveniently lay in narrow space or in the case of similar, and require there is preferable anti-flammability, to adapt to fire-protection rating
Use requirement under harsh occasion.
Although being not limited to communication power supply flexible cable exemplified above respectively have corresponding technique effect, exist following
Common shortcoming: first, due to being all using stranded thin copper wire as conductor, and this conductor is referred to as five class copper by industry and leads
Body, thus softness can not meet desired requirement.And so that bending radius is restricted due to pliability difference, thus
Hinder in narrow space, by immovable object or even when the occasion at the place of talking in a roundabout way etc is laid, easily impact construction is fast
Degree；Second, due to generally selecting the conductor as flexible cable with copper under technology prejudice, thus do not only exist reasonable employment raw material
The blindness of aspect, and lead to flexible cable manufacturing cost big；Third, due to heavy weight, thus not only logistics transportation, storage
High cost in link, and workmen's high labor intensive in laid processes, consumed cost of labor is high.
Content of the invention
The present invention provides a kind of high fire-retardance power supply cable powered for telecommunication apparatus, and this flame retardant type multi-core power flexible cable carries
The high electric conductivity of cable, current-carrying capacity improve 10% about, and do not burn, heat resistance high, be closely difficult to breathe freely so that
Obtain cable and define the compound carbon structure of stable hollow, prevent second-time burning and the flame propagation of material.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of high fire-retardance electricity powered for telecommunication apparatus
Source cable, including three conductor wire cores, this conductor wire core further includes circular aramid fiber core, this circular aramid fiber core appearance
Face is stranded some trapezoidal conductors, and some described trapezoidal conductors form inner conducting layer, and this inner conducting layer outer surface is stranded
There are some " z " font conductors, and " z " font conductor described in some forms outer conducting layer, a polyethylene insulation band is around being wrapped in
Described outer conducting layer outer surface；
One fire resistant flame retardant layer is coated on described polyethylene insulation band outer surface, and this fire resistant flame retardant layer is by mica paper, the first glass
Fine cloth and the second glass-fiber-fabric composition, are bonded by gluing oxidant layer between this mica paper and the first glass-fiber-fabric and the second glass-fiber-fabric, one
Glass tape coats polyolefin insulation restrictive coating around being wrapped in described fire resistant flame retardant layer outer surface, described glass tape outer surface；One
Fire-resistant isinglass belt is coated with insulating sheath around being coated on three described conductor wire core outer surfaces, described fire-resistant isinglass belt outer surface
Layer；
Described insulating jacket layer is composed of the following components:
80 ~ 100 parts of thermoplastic poly ammonia phenol elastomer,
Melt index is 10 ~ 20 parts of the Low Density Polyethylene of 1 ~ 8g/10min,
8 ~ 15 parts of ethylene ethyl acrylate,
5 ~ 10 parts of ethylene-butylene copolymer,
4 ~ 8 parts of silicon dioxide,
8 ~ 20 parts of butyronitrile complex,
5 ~ 10 parts of chlorinated polyethylene,
5 ~ 15 parts of zinc,
5 ~ 12 parts of magnesium hydroxide,
2 ~ 8 parts of compound molybdenum smoke suppressant,
1 ~ 5 part of montmorillonite,
1 ~ 3 part of calcium-zinc composite stabilizing agent,
Double (3,5- three-level butyl -4- hydroxy phenyl) 1 ~ 3 part of thioether,
2 ~ 4 parts of zinc stearate.
In technique scheme, further improved technical scheme is as follows:
1. in such scheme, the thickness of described inner conducting layer is 0.4 ~ 5mm, and the thickness of described outer conducting layer is 2 ~ 5mm.
2., in such scheme, described circle aramid fiber core section is amassed as 0.15 ~ 16mm2.
3., in such scheme, described trapezoidal conductor strand direction is that dextrad is stranded, described " z " font conductor strand direction
Stranded for left-hand.
Because technique scheme is used, the present invention compared with prior art has the advantage that
1. the high fire-retardance power supply cable that the present invention powers for telecommunication apparatus, its insulating jacket layer includes thermoplastic poly ammonia phenol
80 ~ 100 parts of elastomer, the melt index of collocation is 10 ~ 20 parts of the Low Density Polyethylene of 1 ~ 8g/10min, ethylene ethyl acrylate
8 ~ 15 parts, 1 ~ 3 part of calcium-zinc composite stabilizing agent, double (3,5- three-level butyl -4- hydroxy phenyl) 1 ~ 3 part of thioether, zinc stearate 2 ~ 4
Part, 5 ~ 10 parts of ethylene-butylene copolymer, 4 ~ 8 parts of silicon dioxide, 5 ~ 10 parts of chlorinated polyethylene is so that the first restrictive coating combines respectively
From advantage, improve against weather and fire resistance, stabilizing effect, radiotolerant characteristic, improve simultaneously insulating properties,
Surface abrasion resistance and case hardness, surface cloudy surface matte effect shrinkage factor that is excellent and reducing material；Secondly, insulating jacket layer enters
One step contains 5 ~ 15 parts of zinc, 5 ~ 12 parts of magnesium hydroxide, 2 ~ 8 parts of compound molybdenum smoke suppressant, 1 ~ 5 part of montmorillonite and with other components
Synergism, 8 ~ 20 parts of butyronitrile complex, improve greatly Flame Retardancy energy, the oxygen index (OI) representing anti-flammability is high, and makes
Obtain material, in burning, there is good one-tenth charcoal effect, define stable hollow and be combined carbon structure, prevent the secondary of material
Burning and flame propagation.
2. the high fire-retardance power supply cable that the present invention powers for telecommunication apparatus, using 2 layers of conductive layer, inner conducting layer is by some
Individual " z " font conductor strand forms, and outer conducting layer is formed by several trapezoidal conductor strand, which greatly reduces vortex, reduces
The loss of circuit, improves the electric conductivity of cable, current-carrying capacity improves 10% about；Secondly, fire resistant flame retardant layer is coated on polyethylene
Insulating tape outer surface, this fire resistant flame retardant layer is made up of mica paper, the first glass-fiber-fabric and the second glass-fiber-fabric, this mica paper and the first glass
Bonded by gluing oxidant layer between fine cloth and the second glass-fiber-fabric, a glass tape around being wrapped in fire resistant flame retardant layer outer surface, do not burn,
Heat resistance is high, is closely difficult to breathe freely, so that cable has high temperature resistant, flame resistant, not halogen, not smoking property.
3. the high fire-retardance power supply cable that the present invention powers for telecommunication apparatus, circular aramid fiber core outer surface is stranded has for it
Some " z " font conductors, and some " z " font conductors form inner conducting layers, this inner conducting layer outer surface is stranded have some
The trapezoidal conductor of root, circular aramid fiber core forms so that flexible cable by some aramid fiber silks are stranded, and tensile strength is big, carry
Flow is high, pliability is high, flexible, and its close structure, minimum bending radius most 4 times cable sizes of decline, reduce
The space of mounting arrangement, reduces installation cost it is easier to lay.
Brief description
The high fire-retardance power supply cable structure schematic diagram that accompanying drawing 1 is powered for telecommunication apparatus for the present invention；
Accompanying drawing 2 is fire resistant flame retardant Rotating fields schematic diagram in flame retardant type multi-core power flexible cable of the present invention.
In the figures above: 1, circular aramid fiber core；2nd, inner conducting layer；21st, trapezoidal conductor；3rd, outer conducting layer；31、“z”
Font conductor；4th, polyethylene insulation band；5th, fire resistant flame retardant layer；51st, mica paper；52nd, the first glass-fiber-fabric；53rd, the second glass-fiber-fabric；
54th, gluing oxidant layer；6th, glass tape；7th, polyolefin insulation restrictive coating；8th, conductor wire core；9th, fire-resistant isinglass belt；10th, insulating sheath
Layer.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Embodiment 1 ~ 5: a kind of high fire-retardance power supply cable powered for telecommunication apparatus, including three conductor wire cores 8, this is conductive
Core 8 further includes circular aramid fiber core 1, and this circular aramid fiber core 1 outer surface is stranded some trapezoidal conductors 21,
And some described trapezoidal conductors 21 form inner conducting layer 2, this inner conducting layer 2 outer surface is stranded some " z " font conductors
31, and " z " font conductor 31 described in some forms outer conducting layer 3, a polyethylene insulation band 4 is around being wrapped in described outer conducting layer 3
Outer surface；
One fire resistant flame retardant layer 5 is coated on described polyethylene insulation band 4 outer surface, this fire resistant flame retardant layer 5 by mica paper 51,
One glass-fiber-fabric 52 and the second glass-fiber-fabric 53 form, and pass through glue between this mica paper 51 and the first glass-fiber-fabric 52 and the second glass-fiber-fabric 53
Adhesive layer 54 bonds, and a glass tape 6 is poly- around being wrapped in described fire resistant flame retardant layer 5 outer surface, described glass tape 6 outer surface cladding
Alkene insulating jacket layer 7；One fire-resistant isinglass belt 9 is around being coated on three described conductor wire core 8 outer surfaces, described fire-resistant isinglass belt 9
Outer surface is coated with insulating jacket layer 10；
Above-mentioned insulating jacket layer 10 is composed of the following components, specifically as shown in table 1:
Table 1
The thickness of above-mentioned inner conducting layer 2 is 0.4 ~ 5mm, and the thickness of described outer conducting layer 3 is 2 ~ 5mm.
Above-mentioned circle aramid fiber core 1 sectional area is 0.15 ~ 16mm2.
Above-mentioned trapezoidal conductor 21 direction of lay is that dextrad is stranded, and described " z " font conductor 31 direction of lay is that left-hand is stranded.
Embodiment 1 ~ 5 be shown in Table 2 for the high fire-retardance power supply cable performance that telecommunication apparatus is powered:
Table 2
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, all should be included within the scope of the present invention.
Claims (1)
1. a kind of high fire-retardance power supply cable powered for telecommunication apparatus it is characterised in that: include three conductor wire cores (8), this leads
Wire core (8) further includes circular aramid fiber core (1), and circular aramid fiber core (1) outer surface is stranded some ladders for this
Shape conductor (21), and some described trapezoidal conductors (21) form inner conducting layer (2), this inner conducting layer (2) outer surface is stranded to be had
Some " z " font conductors (31), and " z " font conductor (31) described in some forms outer conducting layer (3), a polyethylene insulation
Band (4) is around being wrapped in described outer conducting layer (3) outer surface；
One fire resistant flame retardant layer (5) is coated on described polyethylene insulation band (4) outer surface, and this fire resistant flame retardant layer (5) is by mica paper
(51), the first glass-fiber-fabric (52) and the second glass-fiber-fabric (53) composition, this mica paper (51) and the first glass-fiber-fabric (52) and the second glass
Bonded by gluing oxidant layer (54) between fine cloth (53), a glass tape (6) around being wrapped in described fire resistant flame retardant layer (5) outer surface,
Described glass tape (6) outer surface cladding polyolefin insulation restrictive coating (7)；One fire-resistant isinglass belt (9) is around being coated on described in three
Conductor wire core (8) outer surface, described fire-resistant isinglass belt (9) outer surface is coated with insulating jacket layer (10)；
Described insulating jacket layer (10) is composed of the following components:
80 ~ 100 parts of thermoplastic poly ammonia phenol elastomer,
Melt index is 10 ~ 20 parts of the Low Density Polyethylene of 1 ~ 8g/10min,
8 ~ 15 parts of ethylene ethyl acrylate,
5 ~ 10 parts of ethylene-butylene copolymer,
4 ~ 8 parts of silicon dioxide,
8 ~ 20 parts of butyronitrile complex,
5 ~ 10 parts of chlorinated polyethylene,
5 ~ 15 parts of zinc,
5 ~ 12 parts of magnesium hydroxide,
2 ~ 8 parts of compound molybdenum smoke suppressant,
1 ~ 5 part of montmorillonite,
1 ~ 3 part of calcium-zinc composite stabilizing agent,
Double (3,5- three-level butyl -4- hydroxy phenyl) 1 ~ 3 part of thioether,
2 ~ 4 parts of zinc stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014155.5A CN104795136B (en) | 2015-01-12 | 2015-01-12 | High-flame-retardance power cable for supplying power for telecommunication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014155.5A CN104795136B (en) | 2015-01-12 | 2015-01-12 | High-flame-retardance power cable for supplying power for telecommunication equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104795136A CN104795136A (en) | 2015-07-22 |
| CN104795136B true CN104795136B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510014155.5A Active CN104795136B (en) | 2015-01-12 | 2015-01-12 | High-flame-retardance power cable for supplying power for telecommunication equipment |
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| CN107799210A (en) * | 2016-08-30 | 2018-03-13 | 江苏亨通线缆科技有限公司 | Communicate the distribution system flexible cable of resistance to irradiation |
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| JP3139267B2 (en) * | 1994-03-23 | 2001-02-26 | 日立電線株式会社 | Wire conductor for power transmission line and method of manufacturing the same |
| CN202487246U (en) * | 2012-03-07 | 2012-10-10 | 远东电缆有限公司 | High-strength high-capacity aerial insulated cable |
| CN202855416U (en) * | 2012-07-26 | 2013-04-03 | 江苏亨通线缆科技有限公司 | Fire-resistant shield flexible cable used for communication power supply |
| CN104031328B (en) * | 2014-04-30 | 2016-03-16 | 中广核三角洲（江苏）塑化有限公司 | Plenum rated cables high flame resistance, low smoke PVC matrix material and preparation method thereof |
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