CN209328587U - A kind of low smoke halogen-free fire retardant fire resistant cable - Google Patents
A kind of low smoke halogen-free fire retardant fire resistant cable Download PDFInfo
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- CN209328587U CN209328587U CN201920228949.5U CN201920228949U CN209328587U CN 209328587 U CN209328587 U CN 209328587U CN 201920228949 U CN201920228949 U CN 201920228949U CN 209328587 U CN209328587 U CN 209328587U
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Abstract
The present disclosure proposes a kind of low smoke halogen-free fire retardant fire resistant cable, including conductor, inner insulating layer is extruded outside the conductor, and refractory insulating layer, the outer extrude sheath protective layer of the refractory insulating layer are extruded outside the inner insulating layer；The inner insulating layer, refractory insulating layer and sheath protective layer are disposably extruded in outside conductor using three-layer co-extruded technique out.The disclosure cable has excellent fire-retardant and fire resistance, and low smoke and zero halogen is environmentally protective, long service life, and securely and reliably, simple process, high production efficiency is at low cost.
Description
Technical field
This disclosure relates to technical field of electric wires and cables, more particularly to a kind of low smoke halogen-free fire retardant fire resistant cable.
Background technique
With the development of science and technology, requirement of the people to fire-retardant fireproof fire resisting is higher and higher, especially densely populated place
Public place, higher and higher to the attention degree of wire and cable flame-retardant performance, this requires these buildings to use fire resistance
Fire damage can be reduced, guarantees the safety of life and property of people with the wire and cable of excellent fireproof performance.
Inventor has found that flame retardant coating used in fire-resistant wire and cable is usually wrapped mica at present in actual operation
Band, and mica tape is to be bonded using mica paper and glass-fiber-fabric or film as supporting material with organic siliconresin, through high-temperature process
At with good high temperature resistance and flame resistance energy.But mica tape price is higher, and needs in production process special
Carry out wrapped, at high cost, low efficiency.
It needs to develop a kind of excellent fire retardant property, simple process, high production efficiency, cable at low cost as a result,.
Utility model content
The purpose of this specification embodiment is to provide a kind of low smoke halogen-free fire retardant fire resistant cable, which saves mica tape
Wrapped process, have excellent fire-retardant and fire resistance, low smoke and zero halogen is environmentally protective, long service life, securely and reliably, work
Skill is simple, high production efficiency, at low cost.
To achieve the above object, this specification embodiment provides a kind of low smoke halogen-free fire retardant fire resistant cable, including conductor,
Inner insulating layer is extruded outside the conductor, and refractory insulating layer, the outer extrude sheath of the refractory insulating layer are extruded outside the inner insulating layer
Protective layer.
Further technical solution, the inner insulating layer, refractory insulating layer and sheath protective layer are gone to work using three-layer co-extruded
Skill is disposably extruded in outside conductor.
Further technical solution, the conductor are copper conductor.
Preferably, it is circular lead that the copper conductor, which is cross section made of solid core annealed copper wire or multiply soft copper silk bundle strand,
Body.
Preferably, copper conductor sectional area is 1.5-240mm2。
Further preferred, the copper conductor is the 2nd class copper conductor or the 5th class copper conductor.
Further technical solution, the inner insulating layer are to be made by Radiation Crosslinked Polyethylene Insulation Material.
Preferably, the inner insulating layer is with a thickness of 0.2-0.6mm.
Further technical solution, the refractory insulating layer are to be made by ceramic low smoke halogen-free flame-retardant polyolefin.
Preferably, the refractory insulating layer is with a thickness of 1.5-2.5mm.
Further technical solution, the sheath protective layer are to be made by low-smoke and halogen-free flame retardant polyolefin jacket material.
Preferably, the sheath protective layer with a thickness of 0.9-2.7mm.
Further technical solution, the applicable voltage rating of above-mentioned low smoke halogen-free fire retardant fire resistant cable be 0.6/1kV and with
Under.
Compared with prior art, the beneficial effect of the disclosure is:
The above-mentioned low smoke halogen-free fire retardant fire resistant cable of the disclosure saves the wrapped process of mica tape, using three-layer co-extruded place's work
Insulation and sheath are disposably extruded in outside conductor by skill, high production efficiency, at low cost.
In use, in scene of fire, low-smoke and flame retardant sheath protective layer can be to avoid cable itself for disclosure cable
Burning, refractory insulating layer can be quickly changed by organic plastics state hard in thermal-flame after the damage of sheath protective layer
, complete ceramic layer, the ceramic layer of generation is cellular structures, which has excellent heat-insulated, oxygen barrier, fire resisting
Characteristic, it can be ensured that cable still is able in a fire using the normal power supply of the facilities such as guarantee fire-fighting evacuation illumination pacifies personnel
Offer valuable time is effectively withdrawn entirely, guarantees the safety of life and property of the people.
The disclosure cable has excellent fire-retardant and fire resistance, and low smoke and zero halogen is environmentally protective, long service life, peace
Entirely reliably, simple process, high production efficiency are at low cost.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is low smoke halogen-free fire retardant fire resistant construction of cable schematic diagram in embodiment of the present disclosure；
In figure, 1: conductor, 2: inner insulating layer, 3: refractory insulating layer, 4: sheath protective layer.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In one embodiment of the disclosure, referring to figure 1, low smoke halogen-free fire retardant fire resistant cable, including conductor 1, it is interior absolutely
Edge layer 2, refractory insulating layer 3, sheath protective layer 4.
In the specific implementation, the 2nd class conductor or the 5th class conductor can be used in conductor 1, and irradiation can be selected in 2 material of inner insulating layer
Ceramic low smoke halogen-free flame-retardant polyolefin, 4 material of sheath protective layer can be selected in cross-linked polyethylene insulating material, 3 material of refractory insulating layer
Expect that low-smoke and halogen-free flame retardant polyolefin jacket material can be selected.
Wherein, inner insulating layer, refractory insulating layer, sheath protective layer are disposably extruded in conductor using three-layer co-extruded technique out
Outside, being then irradiated crosslinking can be prepared by.Specifically, inner insulating layer, refractory insulating layer and three layers of sheath protective layer use co-extrusion
Technique out is disposably extruded in outside copper conductor by three-layer co-extruding machine head, with three extruders, is then irradiated crosslinking
It is made.
In the examples of implementation, realized using above-mentioned process means by inner insulating layer, refractory insulating layer and sheath protective layer
It is disposably extruded in outside conductor, simple process, high production efficiency is at low cost.
The ceramic refractory insulating layer extruded outside disclosure low-smoke and flame retardant fire-resisting cable conductor can during high-temp combustion
Cellular hard complete ceramic layer is quickly formed, there is good fire resisting, heat-insulated, oxygen barrier, insulation performance；Sheath is low cigarette
Halogen-free anti-flaming polyolefin protective cover material has good flame retardant property, assigns electric wire excellent flame retardant property.
The utility model low smoke halogen-free fire retardant fire resistant cable, the extrusion of inner insulating layer, refractory insulating layer and sheath protective layer
Technique has excellent fire resisting and flame retardant property using three-layer co-extruded technique out, cable, and low smoke and zero halogen is environmentally protective, uses
Service life is long, and securely and reliably, simple process, high production efficiency is at low cost.
In the examples of implementation, copper conductor sectional area is 1.5mm2, using the 2nd class copper conductor；Inner insulating layer is that irradiation is handed over
Join insulating material of polyethylene, with a thickness of 0.2mm；Refractory insulating layer is ceramic low smoke halogen-free flame-retardant polyolefin, with a thickness of 1.5mm；
Sheath protective layer is low-smoke and halogen-free flame retardant polyolefin jacket material, with a thickness of 0.9mm.
The disclosure also proposed another embodiment, and the structure of the low smoke halogen-free fire retardant fire resistant cable is referring again to 1 institute of attached drawing
Show, including conductor, inner insulating layer, refractory insulating layer, sheath protective layer, wherein inner insulating layer, refractory insulating layer, sheath protection
Layer is disposably extruded in outside conductor using three-layer co-extruded technique out, and being then irradiated crosslinking can be prepared by.
Wherein, copper conductor sectional area is 16mm2, using the 5th class copper conductor；Inner insulating layer is Radiation Crosslinked Polyethylene insulation
Material, with a thickness of 0.4mm；Refractory insulating layer is ceramic low smoke halogen-free flame-retardant polyolefin, with a thickness of 2mm；Sheath protective layer is low
Cigarette halogen-free anti-flaming polyolefin protective cover material, with a thickness of 1.75mm.
The disclosure also proposed another embodiment, and the structure of the low smoke halogen-free fire retardant fire resistant cable is referring again to 1 institute of attached drawing
Show, including conductor, inner insulating layer, refractory insulating layer, sheath protective layer, wherein inner insulating layer, refractory insulating layer, sheath protection
Layer is disposably extruded in outside conductor using three-layer co-extruded technique out, and being then irradiated crosslinking can be prepared by.
Wherein, copper conductor sectional area is 70mm2, using the 2nd class copper conductor；Inner insulating layer is Radiation Crosslinked Polyethylene insulation
Material, with a thickness of 0.4mm；Refractory insulating layer is ceramic low smoke halogen-free flame-retardant polyolefin, with a thickness of 2.2mm；Sheath protective layer is
Low-smoke and halogen-free flame retardant polyolefin jacket material, with a thickness of 1.95mm.
The disclosure also proposed other embodiments, and the structure of the low smoke halogen-free fire retardant fire resistant cable is referring again to 1 institute of attached drawing
Show, including conductor, inner insulating layer, refractory insulating layer, sheath protective layer, wherein inner insulating layer, refractory insulating layer, sheath protection
Layer is disposably extruded in outside conductor using three-layer co-extruded technique out, and being then irradiated crosslinking can be prepared by.
Wherein, copper conductor sectional area is 240mm2, using the 2nd class copper conductor；Inner insulating layer is that Radiation Crosslinked Polyethylene is exhausted
Edge material, with a thickness of 0.6mm；Refractory insulating layer is ceramic low smoke halogen-free flame-retardant polyolefin, with a thickness of 2.5mm；Sheath protective layer
For low-smoke and halogen-free flame retardant polyolefin jacket material, with a thickness of 2.7mm.
Cable in above-described embodiment saves the wrapped process of mica tape, is disposably extruded using three-layer co-extruded place's technique
High production efficiency, at low cost outside conductor, in use, in scene of fire, low-smoke and flame retardant restrictive coating can be to avoid for cable
Cable own combustion, refractory insulating layer quickly can be changed into heavily fortified point by organic plastics state in thermal-flame after restrictive coating damage
Hard, complete ceramic layer, the ceramic layer of generation are cellular structures, which has excellent heat-insulated, oxygen barrier, resistance to
Fiery characteristic still is able to cable in a fire using the cable has excellent fire-retardant and fire resistance, and low smoke and zero halogen is green
Colour circle is protected, long service life, and securely and reliably, simple process, high production efficiency is at low cost.
It is understood that in the description of this specification, reference term " embodiment ", " another embodiment ", " other
The description of embodiment " or " first embodiment~N embodiment " etc. means specific spy described in conjunction with this embodiment or example
Sign, structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned
The schematic representation of term may not refer to the same embodiment or example.Moreover, the specific features of description, structure, material
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Claims (10)
1. a kind of low smoke halogen-free fire retardant fire resistant cable, characterized in that including conductor, inner insulating layer is extruded outside the conductor, it is described
Refractory insulating layer, the outer extrude sheath protective layer of the refractory insulating layer are extruded outside inner insulating layer；
The inner insulating layer, refractory insulating layer and sheath protective layer are disposably extruded in outside conductor using three-layer co-extruded technique out
Face.
2. a kind of low smoke halogen-free fire retardant fire resistant cable as described in claim 1, characterized in that the conductor is copper conductor, institute
It is circular conductor that state copper conductor, which be cross section made of solid core annealed copper wire or multiply soft copper silk bundle strand,.
3. a kind of low smoke halogen-free fire retardant fire resistant cable as claimed in claim 2, characterized in that copper conductor sectional area is 1.5-
240mm2。
4. a kind of low smoke halogen-free fire retardant fire resistant cable as claimed in claim 2 or claim 3, characterized in that the copper conductor is the 2nd class
Copper conductor or the 5th class copper conductor.
5. a kind of low smoke halogen-free fire retardant fire resistant cable as described in claim 1, characterized in that the inner insulating layer is by irradiating
Cross-linked polyethylene insulating material is made.
6. a kind of low smoke halogen-free fire retardant fire resistant cable as claimed in claim 5, characterized in that the inner insulating layer with a thickness of
0.2-0.6mm。
7. a kind of low smoke halogen-free fire retardant fire resistant cable as described in claim 1, characterized in that the refractory insulating layer is by making pottery
Porcelain low smoke halogen-free flame-retardant polyolefin is made.
8. a kind of low smoke halogen-free fire retardant fire resistant cable as claimed in claim 7, characterized in that the refractory insulating layer with a thickness of
1.5-2.5mm。
9. a kind of low smoke halogen-free fire retardant fire resistant cable as described in claim 1, characterized in that the sheath protective layer is by low
Cigarette halogen-free anti-flaming polyolefin protective cover material is made.
10. a kind of low smoke halogen-free fire retardant fire resistant cable as claimed in claim 9, characterized in that the thickness of the sheath protective layer
Degree is 0.9-2.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920228949.5U CN209328587U (en) | 2019-02-20 | 2019-02-20 | A kind of low smoke halogen-free fire retardant fire resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920228949.5U CN209328587U (en) | 2019-02-20 | 2019-02-20 | A kind of low smoke halogen-free fire retardant fire resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209328587U true CN209328587U (en) | 2019-08-30 |
Family
ID=67732481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920228949.5U Active CN209328587U (en) | 2019-02-20 | 2019-02-20 | A kind of low smoke halogen-free fire retardant fire resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209328587U (en) |
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2019
- 2019-02-20 CN CN201920228949.5U patent/CN209328587U/en active Active
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