CN114121370A - Preparation method of B1-grade flame-retardant mineral substance insulated flexible fireproof cable - Google Patents
Preparation method of B1-grade flame-retardant mineral substance insulated flexible fireproof cable Download PDFInfo
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- CN114121370A CN114121370A CN202111422710.XA CN202111422710A CN114121370A CN 114121370 A CN114121370 A CN 114121370A CN 202111422710 A CN202111422710 A CN 202111422710A CN 114121370 A CN114121370 A CN 114121370A
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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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- 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
- H01B13/008—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing extensible conductors or cables
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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
- H01B13/06—Insulating conductors or cables
- H01B13/08—Insulating conductors or cables by winding
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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
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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
- H01B13/221—Sheathing; Armouring; Screening; Applying other protective layers filling-up interstices
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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
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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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
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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
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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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
Abstract
The invention discloses a preparation method of a B1-grade flame-retardant mineral substance insulated flexible fireproof cable, which comprises at least one conductor; the lapping layer is wound outside the conductor; the filling layer is arranged between the wrapping layer and the conductor; the fireproof oxygen insulation layer is wound outside the lapping layer; the glass tape is wound on the cladding layer, and the glass tape is wound outside the fireproof oxygen-isolating layer; the sheath layer is wound outside the glass tape wrapping layer; the conductor is wound on a machine table, and a guide plate, a winding plate, a spraying plate and a cladding plate are sequentially arranged on the machine table; the spraying plate comprises a spraying cavity and a nozzle, the cross section of the spraying cavity is the same as that of the conductor, the nozzle is arranged towards the spraying cavity and is arranged outside the spraying cavity along a circular arc shape, a ceramic silicon rubber tape and a mica tape are wrapped to form a fireproof layer, and the insulating performance between the conductors under the fire condition can be effectively guaranteed by matching with an ultraviolet cross-linked polyethylene composite insulating structure.
Description
Technical Field
The invention relates to a cable manufacturing technology, in particular to a preparation method of a B1-grade flame-retardant mineral substance insulated flexible fireproof cable.
Background
With the emphasis on fire safety level of people, the fire hazard prevention and control management of the electric wires and the cables is enhanced, and particularly the fire protection and fire protection capability of the electric wires and the cables is improved, but the traditional fire-protection cables have the problems of release of overhigh heat, smoke and the like during combustion, and have limitations in the aspects of insulation performance, mechanical performance and the like.
Disclosure of Invention
The invention aims to provide a preparation method of a B1-grade flame-retardant mineral substance insulated flexible fireproof cable, which solves the problems in the background technology.
The purpose of the invention can be realized by the following technical scheme:
a flexible fire-protected cable of flame-retardant mineral insulation class B1, comprising at least one conductor; the lapping layer is wound outside the conductor; the filling layer is arranged between the wrapping layer and the conductor; the fireproof oxygen insulation layer is wound outside the lapping layer; the glass tape is wound on the cladding layer, and the glass tape is wound outside the fireproof oxygen-isolating layer; the sheath layer is wound outside the glass tape wrapping layer;
the conductor is wound on a machine table, and a guide plate, a winding plate, a spraying plate and a cladding plate are sequentially arranged on the machine table;
the spraying plate comprises a spraying cavity and a nozzle, the spraying cavity is the same as the cross section of the conductor, the nozzle is arranged outside the spraying cavity and faces the spraying cavity, and the nozzle is arranged outside the spraying cavity along a circular arc shape.
Further, the spraying plate also comprises an arc-shaped wall, wherein the arc-shaped wall is the inner wall embedded into the spraying plate, and the nozzles are arranged on the arc-shaped wall at equal intervals.
Further, the guide board includes the bullport and sets up the regulation arc board in the bullport, wherein, is provided with the fixation clamp on adjusting the arc board, and one side fixed ann of fixation clamp is connected with the output fixed connection who adjusts pole and adjust pole and hydraulic pressure platform.
Furthermore, the winding plate comprises an extrusion column arranged in the middle of the winding plate, at least one filling hole is formed in the circumferential direction of the extrusion column, a filling gap is formed between the filling hole and the winding plate, and a filling cavity is formed between every two adjacent filling holes;
and a filling layer is filled between the filling cavity and the filling gap.
Further, the fireproof oxygen-isolating layer comprises carbon nano tube/zirconium phosphate nano composite powder and a magnesium hydroxide mud-like substance;
wherein, the fireproof oxygen-insulating layer comprises the following components in parts by weight: 5-12 parts of magnesium hydroxide and 10-17 parts of carbon nano tube/zirconium phosphate nano composite powder.
Further, the carbon nanotube/zirconium phosphate nano composite powder comprises a carbon nanotube, and a zirconium phosphate nano layer is uniformly loaded on the surface of the carbon nanotube;
wherein, the zirconium phosphate nano-layer is a single-sheet layer, and the carbon nano-tube is a multi-wall carbon nano-tube.
Furthermore, the overlapping rate of the glass belt around the cladding is not less than 15% of the bandwidth, and the glass belt around the cladding is tight and round.
Furthermore, the filling layer comprises a plurality of glass fiber ropes which are arranged and woven into a filling according to characteristic rules;
the filling layer is closely matched with the wrapping layer and the fireproof oxygen isolation layer.
Further, the lapping layer comprises a ceramic silicon rubber lapping layer, a fire-resistant mica tape lapping layer and an ultraviolet crosslinking polyethylene insulating layer which are sequentially wound outside the conductor;
the number of winding layers of the ceramic silicon rubber wrapping layer, the fire-resistant mica tape wrapping layer and the ultraviolet crosslinking polyethylene insulating layer is increased in sequence;
the conductor comprises a twisted copper wire;
the glass tape winding layer comprises a plurality of glass fiber ropes which are arranged and woven according to a preset arrangement mode.
A preparation method of a B1-grade flame-retardant mineral substance insulated flexible fireproof cable is applied to the B1-grade flame-retardant mineral substance insulated flexible fireproof cable;
the method comprises the following steps: stranding a copper wire into a conductor, wherein the section of the conductor is circular;
step two: sequentially winding a ceramic silicon rubber wrapping layer, a fire-resistant mica tape wrapping layer and an ultraviolet crosslinking polyethylene insulating layer outside the conductor, wherein the number of winding layers of the ceramic silicon rubber wrapping layer, the fire-resistant mica tape wrapping layer and the ultraviolet crosslinking polyethylene insulating layer is sequentially increased to form the wrapping layer;
step three: filling a filling layer between the conductors and cabling;
step four: winding a glass fiber tape on the cabled conductor, wrapping the glass fiber tape, and extruding a fireproof oxygen-isolating layer;
step five: and winding a glass tape winding layer and a sheath layer outside the fireproof oxygen-isolating layer.
Compared with the prior art, the invention has the beneficial effects that:
(1) the ceramic silicon rubber tape and the mica tape are wrapped to be used as a fire-resistant layer, and the insulating property between conductors under the fire condition can be effectively ensured by matching with an ultraviolet crosslinking polyethylene composite insulating structure.
(2) The gaps between the cable cores are filled with the flame-retardant halogen-free low-smoke alkali-free glass fiber ropes, and the filling is required to be closely matched with the oxygen-insulating material (the mud material formed by mixing the carbon nano tube/zirconium phosphate nano composite powder and the magnesium hydroxide powder as main components) of the extruded refractory mud layer. The air content in the cable core can be reduced under the flame combustion condition, and the environment temperature is reduced through endothermic reaction in the combustion process.
(3) The cabling cable core is wrapped by glass fiber tapes made of the same materials, and is matched with a high-flame-retardant low-smoke halogen-free polyolefin sheath material, so that the cable is basically free from combustion drips in the combustion process.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic top view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the guide plate;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of the structure of the winding plate according to the present invention;
FIG. 5 is a schematic view of the structure of the spray plate of the present invention.
In the figure: 1. a machine platform; 2. a fixing plate; 3. a guide plate; 4. a conductor; 5. a wire winding plate; 6. spraying a plate; 7. a cladding sheet; 8. a guide hole; 9. adjusting the arc plate; 10. a fixing clip; 11. a hydraulic table; 12. adjusting a rod; 13. filling the hole; 14. filling the gap; 15. filling the cavity; 16. extruding the column; 17. an ejection chamber; 18. an arcuate wall; 19. and (4) a nozzle.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-5, a fire retardant mineral insulated flexible fire-protected cable of class B1 includes at least one conductor 4; the lapping layer is wound outside the conductor 4; the filling layer is arranged between the wrapping layer and the conductor 4; the fireproof oxygen insulation layer is wound outside the lapping layer; the glass tape is wound on the cladding layer, and the glass tape is wound outside the fireproof oxygen-isolating layer; the sheath layer is wound outside the glass tape wrapping layer; after the cable is formed, a layer of fire clay (synergistic flame retardant effect realized by main components of carbon nano tube/zirconium phosphate nano composite powder and magnesium hydroxide, flame retardant performance of the cable and safety usability of the cable are improved) oxygen insulation material is directly extruded outside a wrapping layer of the glass fiber tape, and the fire clay oxygen insulation material can form a compact oxygen insulation layer and generate endothermic reaction under the condition of flame combustion, so that not only can the damage of flame to the inner structure of the cable core be prevented, the integrity of the cable core be ensured, but also the volatilization of combustible gas in the cable core can be reduced, and the corresponding combustion temperature can be reduced. The oxygen-isolating layer is wrapped with glass fiber tapes of the same material, the glass fiber tapes are tight and round, the overlapping and covering rate is not less than 15% of the tape width, and therefore, not only can dripping objects generated due to fire clay incrustation under the condition of flame combustion be prevented, but also shaping and ceramization of polyolefin at the initial stage of combustion can be guaranteed.
The conductor 4 is wound on the machine table 1, and the machine table 1 is sequentially provided with a guide plate 3, a winding plate 5, a spraying plate 6 and a cladding plate 7;
the spraying plate 6 comprises a spraying cavity 17 with the same section as that of the conductor 4 and spraying nozzles 19 arranged outside the spraying cavity 17, wherein the spraying nozzles 19 are arranged towards the spraying cavity 17, and the spraying nozzles 19 are arrayed outside the spraying cavity 17 along the circular arc shape.
The ceramic silicon rubber tape and the mica tape are wrapped to form a fireproof layer, and an ultraviolet cross-linked polyethylene composite insulation structure is matched, so that the insulation performance between the conductors 4 under the fire condition can be effectively guaranteed. The gaps between the cable cores are filled with the flame-retardant halogen-free low-smoke alkali-free glass fiber ropes, and the filling is required to be closely matched with the oxygen-insulating material (the mud material formed by mixing the carbon nano tube/zirconium phosphate nano composite powder and the magnesium hydroxide powder as main components) of the extruded refractory mud layer. The air content in the cable core can be reduced under the flame combustion condition, and the environment temperature is reduced through endothermic reaction in the combustion process. The cabling cable core is wrapped by glass fiber tapes made of the same materials, and is matched with a newly developed high-flame-retardant low-smoke halogen-free polyolefin sheath material, so that the cable is ensured to have no combustion drips basically in the combustion process.
In some embodiments, the spray plate 6 further comprises a curved wall 18, wherein the curved wall 18 is an inner wall embedded in the spray plate 6, and the spray nozzles 19 are arranged on the curved wall 18 at equal intervals.
In some embodiments, the guiding plate 3 comprises a guiding hole 8 and an adjusting arc plate 9 disposed in the guiding hole 8, wherein a fixing clip 10 is disposed on the adjusting arc plate 9, an adjusting rod 12 is fixedly connected to one side of the fixing clip 10, and the adjusting rod 12 is fixedly connected to the output end of the hydraulic table 11, wherein the guiding plate 3 is disposed on two fixing plates 2.
In some embodiments, the winding plate 5 comprises an extrusion column 16 disposed in the middle of the winding plate 5, the extrusion column 16 is circumferentially provided with at least one filling hole 13, a filling gap 14 is disposed between the filling hole 13 and the winding plate 5, and a filling cavity 15 is disposed between adjacent filling holes 13; wherein, a filling layer is filled between the filling cavity 15 and the filling gap 14, in some embodiments, the refractory oxygen-isolating layer comprises a mud-like substance of carbon nanotube/zirconium phosphate nano composite powder and magnesium hydroxide;
wherein, the fireproof oxygen-insulating layer comprises the following components in parts by weight: 5-12 parts of magnesium hydroxide and 10-17 parts of carbon nano tube/zirconium phosphate nano composite powder, wherein in some embodiments, the carbon nano tube/zirconium phosphate nano composite powder comprises a carbon nano tube, and the surface of the carbon nano tube is uniformly loaded with a zirconium phosphate nano layer; wherein, the zirconium phosphate nano-layer is a single-sheet layer, and the carbon nano-tube is a multi-wall carbon nano-tube.
In some embodiments, the overlap ratio of the glass ribbon around the cladding is not less than 15% of the bandwidth, and the glass ribbon is tightly rounded around the cladding.
In some embodiments, the filling layer comprises a plurality of glass fiber ropes, and the glass fiber ropes are arranged and woven according to characteristic rules to form filling; the filling layer is closely matched with the wrapping layer and the fireproof oxygen isolation layer.
In some embodiments, the lapping layer comprises a ceramic silicon rubber lapping layer, a fire-resistant mica tape lapping layer and an ultraviolet crosslinking polyethylene insulating layer which are sequentially wound outside the conductor 4;
the number of winding layers of the ceramic silicon rubber wrapping layer, the fire-resistant mica tape wrapping layer and the ultraviolet crosslinking polyethylene insulating layer is increased in sequence; the conductor 4 comprises a stranded copper wire; the glass tape winding layer comprises a plurality of glass fiber ropes which are arranged and woven according to a preset arrangement mode.
A preparation method of a B1-grade flame-retardant mineral substance insulated flexible fireproof cable comprises the following steps:
the method comprises the following steps: stranding a copper wire into a conductor 4, wherein the section of the conductor 4 is circular;
step two: a ceramic silicon rubber wrapping layer, a fire-resistant mica tape wrapping layer and an ultraviolet crosslinking polyethylene insulating layer are sequentially wound outside the conductor 4, and the number of winding layers of the ceramic silicon rubber wrapping layer, the fire-resistant mica tape wrapping layer and the ultraviolet crosslinking polyethylene insulating layer is sequentially increased to form a wrapping layer;
step three: filling a filling layer between the conductors 4 and cabling;
step four: winding a glass fiber tape on the cabled conductor 4, wrapping, and extruding a fireproof oxygen-isolating layer;
step five: and winding a glass tape winding layer and a sheath layer outside the fireproof oxygen-isolating layer.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A preparation method of a B1-grade flame-retardant mineral substance insulated flexible fireproof cable comprises a conductor (4), and is characterized in that the preparation method of the cable specifically comprises the following steps:
the method comprises the following steps: stranding a copper wire into a conductor (4), wherein the section of the conductor (4) is circular;
step two: a ceramic silicon rubber wrapping layer, a fire-resistant mica tape wrapping layer and an ultraviolet crosslinking polyethylene insulating layer are sequentially wound outside the conductor (4), and the number of winding layers of the ceramic silicon rubber wrapping layer, the fire-resistant mica tape wrapping layer and the ultraviolet crosslinking polyethylene insulating layer is sequentially increased to form a wrapping layer;
step three: filling a filling layer between the conductors (4) and cabling;
step four: winding a glass fiber tape on the cabled conductor (4) for wrapping, and extruding a fireproof oxygen-isolating layer;
step five: and winding a glass tape winding layer and a sheath layer outside the fireproof oxygen-isolating layer.
2. The preparation method of the B1-grade flame-retardant mineral insulated flexible fireproof cable, according to claim 1, wherein the flame-retardant oxygen-barrier layer comprises a mud of carbon nanotube/zirconium phosphate nanocomposite powder and magnesium hydroxide;
wherein, the fireproof oxygen-insulating layer comprises the following components in parts by weight: 5-12 parts of magnesium hydroxide and 10-17 parts of carbon nano tube/zirconium phosphate nano composite powder.
3. The B1-grade flame-retardant mineral-insulated flexible fireproof cable according to claim 1, wherein the carbon nanotube/zirconium phosphate nanocomposite powder comprises carbon nanotubes, and a zirconium phosphate nanolayer is uniformly loaded on the surface of the carbon nanotubes;
wherein, the zirconium phosphate nano-layer is a single-sheet layer, and the carbon nano-tube is a multi-wall carbon nano-tube.
4. The method of claim 1, wherein the overlap ratio of the glass tape around the covering is not less than 15% of the tape width, and the glass tape around the covering is tightly rounded.
5. The preparation method of the B1-grade flame-retardant mineral insulated flexible fireproof cable according to claim 1, wherein the filling layer comprises a plurality of glass fiber ropes, and the glass fiber ropes are arranged and woven according to characteristic rules to be filled;
the filling layer is closely matched with the wrapping layer and the fireproof oxygen isolation layer.
6. The preparation method of the B1-grade flame-retardant mineral substance insulated flexible fireproof cable according to claim 1, wherein the wrapping layer comprises a ceramic silicon rubber wrapping layer, a fire-resistant mica tape wrapping layer and an ultraviolet crosslinked polyethylene insulating layer which are sequentially wound outside the conductor (4);
the winding layer number of the ceramic silicon rubber wrapping layer, the fire-resistant mica tape wrapping layer and the ultraviolet crosslinking polyethylene insulating layer is increased in sequence, and the glass tape wrapping layer comprises a plurality of glass fiber ropes which are arranged and woven according to a preset arrangement mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422710.XA CN114121370A (en) | 2021-11-26 | 2021-11-26 | Preparation method of B1-grade flame-retardant mineral substance insulated flexible fireproof cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111422710.XA CN114121370A (en) | 2021-11-26 | 2021-11-26 | Preparation method of B1-grade flame-retardant mineral substance insulated flexible fireproof cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117238584A (en) * | 2023-10-12 | 2023-12-15 | 江苏亨通高压海缆有限公司 | Preparation method of B1-level flame-retardant cable |
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| JP2007305389A (en) * | 2006-05-10 | 2007-11-22 | Hitachi Cable Ltd | High voltage fire-resistant cable and its manufacturing method |
| CN103811118A (en) * | 2012-11-14 | 2014-05-21 | 湖北龙腾红旗电缆(集团)有限公司 | Medium voltage fire resistant cable for airport terminal |
| CN104627979A (en) * | 2015-01-26 | 2015-05-20 | 合肥学院 | Carbon nanotube/alpha-zirconium phosphate composite powder and preparation method thereof |
| CN205038997U (en) * | 2015-10-15 | 2016-02-17 | 新亚特电缆股份有限公司 | Heat -resisting fire -retardant fire prevention power cable |
| CN208985737U (en) * | 2018-10-29 | 2019-06-14 | 广州南洋电缆有限公司 | A kind of low pressure inorganic mineral insulation flexible fireproof cable |
| CN113539552A (en) * | 2021-07-21 | 2021-10-22 | 安徽怡和电缆有限公司 | Cross-linked polyethylene insulated B1-grade flexible fire-resistant cable |
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2021
- 2021-11-26 CN CN202111422710.XA patent/CN114121370A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007305389A (en) * | 2006-05-10 | 2007-11-22 | Hitachi Cable Ltd | High voltage fire-resistant cable and its manufacturing method |
| CN103811118A (en) * | 2012-11-14 | 2014-05-21 | 湖北龙腾红旗电缆(集团)有限公司 | Medium voltage fire resistant cable for airport terminal |
| CN104627979A (en) * | 2015-01-26 | 2015-05-20 | 合肥学院 | Carbon nanotube/alpha-zirconium phosphate composite powder and preparation method thereof |
| CN205038997U (en) * | 2015-10-15 | 2016-02-17 | 新亚特电缆股份有限公司 | Heat -resisting fire -retardant fire prevention power cable |
| CN208985737U (en) * | 2018-10-29 | 2019-06-14 | 广州南洋电缆有限公司 | A kind of low pressure inorganic mineral insulation flexible fireproof cable |
| CN113539552A (en) * | 2021-07-21 | 2021-10-22 | 安徽怡和电缆有限公司 | Cross-linked polyethylene insulated B1-grade flexible fire-resistant cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117238584A (en) * | 2023-10-12 | 2023-12-15 | 江苏亨通高压海缆有限公司 | Preparation method of B1-level flame-retardant cable |
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