CN114005594B - Irradiation crosslinking environment-friendly building cable - Google Patents
Irradiation crosslinking environment-friendly building cable Download PDFInfo
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- CN114005594B CN114005594B CN202111356941.5A CN202111356941A CN114005594B CN 114005594 B CN114005594 B CN 114005594B CN 202111356941 A CN202111356941 A CN 202111356941A CN 114005594 B CN114005594 B CN 114005594B
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- layer
- flame retardant
- retardant
- cable
- flame
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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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
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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
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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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
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention provides an irradiation crosslinking environment-friendly building cable, which comprises: the cable conductor comprises a plurality of cable guide cores and an insulating extrusion coating layer, wherein the cable guide cores are tangent to each other in pairs and are wrapped by the flame-retardant belt layers to form a cable conductor with a circular section, and each cable guide core comprises a conductive core and an insulating extrusion coating layer coated on the outer side of the conductive core; the filling layer is filled between the cable guide core insulation layer and the flame-retardant belt layer; the outer sheath is positioned at the outermost side of the cable, and a high flame retardant layer is arranged between the outer sheath and the flame retardant belt layer; through setting gradually fire retardant carrier tape and the pyrocondensation memory layer of holding fire retardant at fire-retardant tape layer skin, when the inside conducting core short circuit intensifies and reaches the shrink temperature of pyrocondensation memory layer, then fire retardant in the fire retardant bag body is extruded and is reached fire-retardant layer and filling layer, evenly spread distributes on the insulating layer of conducting core, and fire retardant when being heated reaction, can release absorption heat cooling to can form at the insulating layer outside and separate oxygen, insulating layer, avoid producing open flame, realize high flame retardant efficiency.
Description
Technical Field
The invention relates to the technical field of building cables, in particular to an irradiation crosslinking environment-friendly building cable.
Background
The irradiation crosslinking cable is a cable manufactured by using an irradiation crosslinking process, has the advantages of safety, long service life, special heat resistance, chemical resistance and radiation resistance, can be widely applied to the household electricity field such as home decoration, can resist the instantaneous temperature of 300 ℃ and 125 ℃ and can normally work, and has the characteristic of difficult ignition, and compared with other types of cables (such as polyvinyl chloride cables), the irradiation crosslinking cable has the advantages of small cross section size, light weight, reduced use cost in the construction and home decoration fields, high carrying capacity, no release of corrosive gas and toxic gas when burning, environmental protection, safety, low cost, excellent electrical performance and good corrosion resistance, tensile resistance and flame retardance.
Disclosure of Invention
The invention aims to provide an irradiation crosslinking environment-friendly building cable with excellent flame retardance, which comprises the following components: a plurality of cable guide cores are wrapped by the flame-retardant belt layer in a two-to-two cutting way to form a cable appearance with a circular section, and each cable guide core comprises a conductive core and an insulating extrusion layer coated on the outer side of the conductive core; the filling layer is filled between the cable guide core and the flame-retardant layer; an outer sheath located at the outermost side of the cable;
wherein a high flame retardant layer is arranged between the outer sheath and the flame retardant belt layer; the high flame retardant layer includes: the flame retardant carrier tape is wrapped on the outer side of the flame retardant layer and is used for containing flame retardant; the thermal shrinkage memory layer is sleeved outside the flame retardant carrier tape and shrinks at a certain temperature to extrude the flame retardant in the flame retardant carrier tape onto the flame retardant layer and/or the filling layer for flame retardance.
Further, the fire retardant carrier tape is in a flat belt shape, an adhesive tape is arranged on one side of the fire retardant carrier tape along the length direction, and a plurality of fire retardant capsules distributed at equal intervals are arranged on the other side of the fire retardant carrier tape.
Further, the flame retardant bag body on the flame retardant carrier tape is overlapped on the adhesive tape and is positioned on the outer side of the flame retardant layer.
Further, the outer sheath is made of a cross-linked low-smoke halogen-free flame-retardant polyethylene material.
Further, the thermal shrinkage temperature of the thermal shrinkage memory layer is 150-260 ℃.
Further, the flame retardant is an aluminum hydroxide gel flame retardant, a magnesium hydroxide gel flame retardant or an intumescent liquid flame retardant.
Further, the filling layer is a halogen-free glass fiber rope.
Further, the flame retardant layer is a glass fiber mesh.
Further, the flame retardant carrier tape is a double-layer polyethylene film, and the outer surface of the adhesive tape is provided with adhesive sticker.
Further, the fire retardant capsule body is a sealing capsule body, and the fire retardant capsule body is square, round or oval.
Compared with the prior art, the invention has the advantages that:
through setting gradually fire retardant carrier tape and the pyrocondensation memory layer of holding fire retardant at fire-retardant tape layer skin, when the conductive core short circuit temperature rise of inside reached the shrink temperature of pyrocondensation memory layer, then fire retardant in the fire retardant bag body was extruded and is reached fire-retardant layer and filling layer, evenly spread and distribute in the outside of conductive core, and fire retardant when being heated reaction, can release the heat of absorption cooling to can form at conductive core outside and separate oxygen, insulating layer, avoid producing open fire.
The foregoing and other aspects, embodiments, and features of the present teachings will be more fully understood from the following description, taken together with the accompanying drawings. Other additional aspects of the invention, such as features and/or advantages of the exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the embodiments according to the teachings of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a schematic structural view of an irradiation crosslinking environment-friendly building cable according to an exemplary embodiment of the invention.
FIG. 2 is a schematic illustration of an exemplary embodiment of a radiation crosslinked environmentally friendly building cable side of the present invention.
Fig. 3 is a schematic perspective view of the irradiation crosslinking environment-friendly building cable of the exemplary embodiment of fig. 2.
Fig. 4 is a partial schematic view of an exemplary embodiment of the water blocking tape of the present invention.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are set forth below, along with the accompanying drawings.
Aspects of the invention are described in this disclosure with reference to the drawings, in which are shown a number of illustrative embodiments. The embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and examples presented above, as well as those described in more detail below, may be implemented in any number of ways with irradiation crosslinking of environmentally friendly building cables, as the concepts and examples disclosed herein are not limited to any implementation. Additionally, some aspects of the disclosure may be used alone or in any suitable combination with other aspects of the disclosure.
The irradiation crosslinking environment-friendly building cable combined with the examples shown in fig. 1-4 aims at reducing the temperature of the cable by using the diffusion of the flame retardant when the cable is subjected to short-circuit temperature rise, so that the temperature of the cable is reduced, and the cable is prevented from igniting open fire so as to reduce the condition that the cable is ignited to cause fire. By achieving the purpose, the embodiment of the invention provides an irradiation crosslinking environment-friendly building cable, under the condition of cable temperature rise, a flame retardant is diffused to a direction close to a wire, the temperature of the wire is reduced, and the wire is prevented from igniting, and particularly, the high flame retardant layer arranged in the invention comprises a flame retardant carrier tape 4 wrapped outside a flame retardant tape layer 3, the heat-shrinkable memory layer 6 is wrapped outside the flame retardant carrier tape 4, when an inner conductive core 1 is short-circuited and the temperature rise reaches the shrinkage temperature of the heat-shrinkable memory layer 6, the flame retardant 5 in a flame retardant capsule 401 is extruded to the flame retardant layer 3 and a filling layer 2, and is uniformly diffused and distributed outside the conductive core 1, and when the flame retardant 5 is heated, the flame retardant can release and absorb heat to cool, and an oxygen-insulating and heat-insulating layer can be formed outside the conductive core 1, so that open flame is avoided.
Referring to fig. 1, the irradiation crosslinking environment-friendly building cable according to an exemplary embodiment of the present invention includes a conductive core 1, a filling layer 2, a flame retardant layer 3, a flame retardant layer, and an outer sheath 7.
The conductive cores 1 are arranged in four groups, and the conductive cores 1 are arranged in a pair-by-pair mode and are formed by stranding a plurality of strands of copper wires, and are mainly used for power transmission.
Further, insulating extrusion layers 11 made of low-smoke halogen-free flame-retardant polyolefin are arranged outside the conductive cores of each group of conductive cores 1, the conductive cores 1 are fixed into a round cross section shape by utilizing the insulating extrusion layers 11, the flame-retardant tape layers 3 are glass fibers and can be braided and coated outside the insulating extrusion layers 11 which are tangent to each other in a meshed mode, the filling layers 2 are glass fiber ropes, particularly halogen-free glass fiber filling ropes are adopted to fill between the conductive cores 1 distributed in pairs, and the conductive cores 1 and the flame-retardant layers 3 play a role in fixation.
In the preferred embodiment, the outer sheath 7 can be made of a cross-linked low-smoke halogen-free flame-retardant polyethylene material, and is sleeved outside the thermal shrinkage memory layer 6, the highest rated temperature of the cross-linked low-smoke halogen-free flame-retardant polyethylene material can reach 125 ℃ when the cross-linked low-smoke halogen-free flame-retardant polyethylene material works for a long time, corrosive gas and toxic gas are not released when the cross-linked low-smoke halogen-free flame-retardant polyethylene material burns, secondary harm is not generated, and the cross-linked low-smoke halogen-free flame-retardant polyethylene material meets the requirement of environmental protection.
As shown in fig. 1-3, a high flame retardant layer is arranged between the outer sheath 7 and the flame retardant tape layer 3, and the flame retardant layer comprises a flame retardant carrier tape 4 and a heat shrinkage memory layer 6.
Referring to fig. 2-4, the flame retardant carrier tape 4 is wrapped around the outer side of the flame retardant tape layer 3, and can be used for loading the flame retardant capsule 401, and the flame retardant is arranged in the flame retardant capsule 401. In an alternative embodiment, the fire retardant carrier tape 4 is in a flat belt shape, one side of the fire retardant carrier tape 4 along the length direction is provided with an adhesive tape 41, the other side is provided with a plurality of fire retardant capsules 401 distributed at equal intervals, and the fire retardant capsules 401 on the fire retardant carrier tape 4 are stacked on the adhesive tape 41 and are arranged on the outer side of the fire retardant tape layer 3.
In this embodiment, when the flame retardant carrier tape 4 is spirally wound in a clockwise direction on the outside of the flame retardant layer 3, the side with the flame retardant bladder 401 is laminated on the side with the adhesive tape 41, and the flame retardant carrier tape 4 is wrapped with being inclined at 60 degrees from the axis direction.
In a preferred embodiment, the flame retardant carrier tape 4 may be a double-layer polyethylene film, the outer surface of the adhesive tape 41 is provided with a self-adhesive, so that stability in the wrapping process is improved, the double-layer polyethylene film is pressed to form a sealed flame retardant bag 401, the formation of the pressing holes is changed according to requirements, and the flame retardant bag 401 can be pressed to form a square shape, a round shape or an oval shape.
In alternative embodiments, the flame retardant 5 is an aluminum hydroxide gel flame retardant, a magnesium hydroxide gel flame retardant, or an intumescent liquid flame retardant, and commercially available flame retardant microcapsules or particles may be used. It should be understood that the Intumescent Flame Retardant (IFR) is a composite flame retardant mainly composed of nitrogen and phosphorus, and a carbon foam layer is generated on the surface during combustion, so that the flame retardant has the effects of heat insulation, oxygen insulation, smoke suppression, drip prevention and the like, has excellent flame retardant performance, and is low in smoke, low in toxicity and free of corrosive gas.
As an alternative embodiment, the aluminum hydroxide and magnesium hydroxide flame retardant can adopt commercially available flame retardant particles, and when the conductive core is at high temperature or burns, the formed metal oxide can be attached to the flame retardant belt layer 3 and the filling layer 2 to prevent contact with external oxygen, so that the effects of temperature reduction and flame retardance can be achieved.
Further, the heat-shrinkable memory layer 6 is sleeved outside the flame retardant carrier tape 4, and shrinks at a certain temperature to extrude the flame retardant 5 in the flame retardant carrier tape 4 onto the flame retardant layer 3 and the filling layer 2 for flame retardance.
In the preferred embodiment, the thermal shrinkage temperature of the thermal shrinkage memory layer 6 is 150 ℃ to 260 ℃, according to the use environment and requirements of the cable, the thermal shrinkage memory layer 6 can be made of polyolefin materials (the thermal shrinkage temperature is 150 ℃), PVDF materials (the thermal shrinkage temperature is 175 ℃), silicone rubber materials (the thermal shrinkage temperature is 200 ℃) or Teflon materials (the thermal shrinkage temperature is 260 ℃), when the cable is in a short circuit condition or the external temperature of the cable is increased, the thermal shrinkage memory layer 6 is contracted to squeeze and break the inner flame retardant bag 401, so that the flame retardant 5 reaches the flame retardant tape layer 3 and the filling layer 2 to be uniformly spread and distributed on the outer side of the insulating layer 11, the temperature reduction effect can be achieved, and meanwhile, a barrier layer for blocking oxygen is formed on the flame retardant tape layer 3 and the filling layer 2, and the cable is further prevented from being ignited.
The cable is characterized by comprising the following components:
1) Flame retardant properties.
The product can meet the combustion of single-piece and VW-1 and bundled B type after detection. (Excellent ISO International, GB national standard single flame retardant).
2) Environmental protection performance.
The product is detected, the halogen acid gas release amount test can be used for measuring the acidity (the PH value in 1L water is more than or equal to 4.3 electric conductivity value is not more than 10 us/mm) of the gas through GB/T17650.1 determination of the total halogen acid gas amount of < 5 > mg/g and GB/T17550.2 measurement of PH value and electric conductivity, and the WDZBN-KYJYP low smoke halogen-free flame-retardant fire-resistant cable is provided.
3) Low smoke performance.
The smoke density test of the product is detected, and the smoke density test can be measured by the smoke density of GB/T17651.2 electric cable or optical cable burnt under specific conditions.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.
Claims (8)
1. An irradiation crosslinking environment-friendly building cable, which is characterized by comprising:
a plurality of cable guide cores are wrapped by the flame-retardant belt layer in a two-to-two cutting way to form a cable appearance with a circular section, and each cable guide core comprises a conductive core and an insulating extrusion layer coated on the outer side of the conductive core;
the filling layer is filled between the cable guide core and the flame-retardant belt layer;
an outer sheath located at the outermost side of the cable;
wherein a high flame retardant layer is arranged between the outer sheath and the flame retardant belt layer;
the high flame retardant layer consists of a flame retardant carrier tape and a heat shrinkage memory layer;
the fire retardant carrier tape is wrapped on the outer side of the fire retardant tape layer and used for loading a fire retardant bag body, and a fire retardant is arranged in the fire retardant bag body; the heat-shrinkable memory layer is sleeved outside the flame retardant carrier tape and shrinks at a preset temperature to extrude the flame retardant in the flame retardant carrier tape to the flame retardant tape layer and/or the filling layer for flame retardance;
the fire retardant carrier tape is in a flat belt shape, one side of the fire retardant carrier tape along the length direction is provided with an adhesive tape, and the other side of the fire retardant carrier tape is provided with a plurality of fire retardant capsules which are distributed at equal intervals; an adhesive layer is arranged on the outer surface of the adhesive tape;
the flame retardant bag body on the flame retardant carrier tape is overlapped on the adhesive tape and is positioned on the outer side of the flame retardant tape layer.
2. The irradiation crosslinking environment-friendly building cable of claim 1, wherein the outer sheath is a crosslinking low smoke zero halogen flame retardant polyethylene material.
3. The irradiation crosslinking environment-friendly building cable according to claim 1, wherein the heat shrinkage temperature of the heat shrinkage memory layer is 150-260 ℃.
4. The radiation crosslinked environment-friendly building cable according to claim 1, wherein the flame retardant is an aluminum hydroxide gel flame retardant, a magnesium hydroxide gel flame retardant or an intumescent liquid flame retardant.
5. The irradiation crosslinking environmentally friendly building cable of claim 1, wherein the filler layer is a halogen-free fiberglass rope.
6. The radiation crosslinked environmentally friendly building cable of claim 1 wherein the flame retardant carrier tape is a double layer polyethylene film.
7. The radiation crosslinked environmentally friendly building cable of claim 1 wherein said flame retardant capsule is a sealed capsule and said flame retardant capsule is square, round or oval.
8. The radiation crosslinked environmentally friendly building cable of claim 1 wherein the flame retardant tape layer is a fiberglass mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356941.5A CN114005594B (en) | 2021-11-16 | 2021-11-16 | Irradiation crosslinking environment-friendly building cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111356941.5A CN114005594B (en) | 2021-11-16 | 2021-11-16 | Irradiation crosslinking environment-friendly building cable |
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| Publication Number | Publication Date |
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| CN114005594A CN114005594A (en) | 2022-02-01 |
| CN114005594B true CN114005594B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111356941.5A Active CN114005594B (en) | 2021-11-16 | 2021-11-16 | Irradiation crosslinking environment-friendly building cable |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659871A (en) * | 1982-10-01 | 1987-04-21 | Raychem Limited | Cable with flame retarded cladding |
| CN109705477A (en) * | 2019-01-02 | 2019-05-03 | 无锡杰科塑业有限公司 | New-energy automobile cable cross-linking radiation height insulation high-low temperature resistant flame retardant elastomer material and preparation method thereof |
| CN110570981A (en) * | 2019-09-23 | 2019-12-13 | 特变电工(德阳)电缆股份有限公司 | Flame-retardant B1-grade cable |
-
2021
- 2021-11-16 CN CN202111356941.5A patent/CN114005594B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659871A (en) * | 1982-10-01 | 1987-04-21 | Raychem Limited | Cable with flame retarded cladding |
| CN109705477A (en) * | 2019-01-02 | 2019-05-03 | 无锡杰科塑业有限公司 | New-energy automobile cable cross-linking radiation height insulation high-low temperature resistant flame retardant elastomer material and preparation method thereof |
| CN110570981A (en) * | 2019-09-23 | 2019-12-13 | 特变电工(德阳)电缆股份有限公司 | Flame-retardant B1-grade cable |
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| Publication number | Publication date |
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| CN114005594A (en) | 2022-02-01 |
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