CN220121535U - Flame-retardant insulating semiconductive copper-protection wire jacket material - Google Patents
Flame-retardant insulating semiconductive copper-protection wire jacket material Download PDFInfo
- Publication number
- CN220121535U CN220121535U CN202321131079.2U CN202321131079U CN220121535U CN 220121535 U CN220121535 U CN 220121535U CN 202321131079 U CN202321131079 U CN 202321131079U CN 220121535 U CN220121535 U CN 220121535U
- Authority
- CN
- China
- Prior art keywords
- flame
- retardant
- layer
- layers
- outer side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000003063 flame retardant Substances 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 93
- 239000004698 Polyethylene Substances 0.000 claims description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 3
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 239000004945 silicone rubber Substances 0.000 description 8
- 238000010292 electrical insulation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a flame-retardant insulating semi-conductive copper-clad wire sheath material, which relates to the technical field of wires and cables and comprises a semi-conductive wrapping layer and a flame-retardant ring layer sleeved on the outer side surface of the semi-conductive wrapping layer, wherein a plurality of flame-retardant ring layers are sequentially sleeved on the outer side surface of the semi-conductive wrapping layer, PE fixing layers are wrapped on the outer side surfaces of the flame-retardant ring layers, flame-retardant liquid is filled between the PE fixing layers and the flame-retardant ring layers, an electric insulating layer is sleeved on the outer side surfaces of the PE fixing layers, and a corrugated aluminum sheath layer is wrapped on the outer side surfaces of the electric insulating layers. The flame-retardant ring layer is made of the ceramic silicon rubber, the residue after combustion is a hard ceramic shell, smooth power transmission can be ensured under the condition of fire, the flame-retardant ring layer adopts a continuous ring layer structure, so that the integral bending performance of the cable is better, and meanwhile, the flame-retardant ring layer is reinforced and connected through the flame-retardant liquid, so that the influence of gaps among the flame-retardant ring layers on the flame-retardant effect is avoided.
Description
Technical Field
The utility model relates to the technical field of wires and cables, in particular to a flame-retardant insulating semi-conductive copper-clad wire sheath material.
Background
The wire and cable is an electric energy or signal transmission device, and is usually composed of several or several groups of wires, the copper wires are made of very good conductivity, so that the wire and cable is largely used for manufacturing wires, cables, brushes and the like, the wires are composed of a plurality of copper wires, and the copper wire and cable composed of copper wires is mainly a large-scale electrical product for transmitting electric power, transmitting information and realizing electromagnetic energy conversion. The traditional copper wire cable sheath material is prepared by taking polyvinyl chloride as basic resin, adding an inorganic filler such as a stabilizer, a plasticizer, calcium carbonate and the like, an additive such as an auxiliary agent, a lubricant and the like, mixing, kneading and extruding.
Polyvinyl chloride can be prepared to be used in various environments and applications, has low use cost, good flexibility and quite firm, but the material contains substances harmful to the environment and human bodies, and has a plurality of problems when being applied to special environments. With the enhancement of environmental protection consciousness and the improvement of material performance requirements, higher requirements are put forward on the cable sheath material.
Disclosure of Invention
The utility model provides a flame-retardant insulating semiconductive copper sheathing compound, which has the advantage of flame retardance and insulation, so as to solve the problem that the cable sheathing compound is provided with higher requirements along with the enhancement of environmental awareness and the improvement of material performance requirements.
In order to achieve the aim of flame retardation and insulation, the utility model provides the following technical scheme: the utility model provides a fire-retardant insulating semiconductive copper line cover material, includes semiconductive coating and suit at semiconductive coating outside surface's fire-retardant circle layer, a plurality of fire-retardant circle layer suit is in proper order at semiconductive coating's outside surface, fire-retardant circle layer's outside surface parcel has PE fixed layer, it has fire-retardant liquid to fill between PE fixed layer and the fire-retardant circle layer, PE fixed layer's outside surface cover is equipped with the electric insulation layer, electric insulation layer's outside surface parcel has the wrinkle aluminium restrictive coating.
As a preferable technical scheme of the utility model, the flame-retardant ring layer is made of ceramic silicone rubber, the ceramic silicone rubber is an advanced material with the characteristics of fire resistance, flame retardance, low smoke, no toxicity and the like, the ceramic silicone rubber is a composite material prepared by adding other fillers such as ceramic rubber flame retardant and the like according to a proportion and a blending method, the residue after combustion is a hard ceramic shell, the hard shell is not melted and dropped in a fire environment, the hard shell can be subjected to fire for 90min at 950-1000 ℃ through the specification in GB/T19216.21-2003, the line integrity experiment is cooled for 15min, the flame-retardant ring is suitable for any place needing fire resistance, the smooth power transmission can be ensured under the condition of fire, the difference between the outer diameter and the inner diameter of the flame-retardant ring layer is 3-5mm, and the length of the flame-retardant ring layer is 5-8mm.
As a preferable technical scheme of the utility model, the nominal thickness of the PE fixing layer is 2.8-3.4mm, and the PE fixing layer is prepared by mixing polyethylene and ultraviolet-resistant master batch.
As a preferable technical scheme of the utility model, the flame-retardant liquid is prepared by mixing chlorinated paraffin and phenolic resin glue, and reinforcing connection is performed through the flame-retardant liquid, so that the bending performance is ensured, and meanwhile, the influence of gaps between flame-retardant ring layers on the flame-retardant effect is avoided.
As a preferable technical scheme of the utility model, the semi-conductive wrapping layer adopts a semi-conductive layer coated with graphite, and the semi-conductive wrapping layer coated with graphite ensures that the whole cable has semi-conductive performance and has a nominal thickness of 0.25-0.35mm.
As a preferable technical scheme of the utility model, the electric insulation layer is made of chlorinated polyethylene material, the nominal thickness of the electric insulation layer is 5.5-6.5mm, and the PE fixing layer and the electric insulation layer have low dielectric loss and high dielectric strength and have excellent electric performance, so that the cable has excellent insulation performance as a whole.
As a preferable technical scheme of the utility model, the corrugated aluminum sheath layer adopts an aluminum belt with the nominal thickness of 2.8mm, and the integral wear resistance and safety of the cable are enhanced by the corrugated aluminum sheath layer, so that the corrugated aluminum sheath layer can meet the application under different environments, and has the width of 450mm, the embossing pitch of 18-35 mm and the depth of 6-7 mm.
Compared with the prior art, the utility model provides a flame-retardant insulating semiconductive copper-clad wire sheath material, which has the following beneficial effects:
1. this insulating semiconductive copper line cover material of fire-retardant, increase holistic fire resistance through fire-retardant ring layer, the fire-retardant ring layer adopts ceramic silicone rubber to make, its burning back residue is hard ceramic state casing, hard shell does not melt and do not drip in the conflagration environment, also can guarantee that power transmission is unobstructed under the circumstances of conflagration, fire-retardant ring layer adopts continuous ring layer structure to make the holistic bending performance of cable better, consolidates through fire-retardant liquid simultaneously and connects, both guaranteed bending performance, avoid the gap between the fire-retardant ring layer to influence flame retardant effect simultaneously.
2. According to the flame-retardant insulating semiconductive copper-protecting wire jacket material, the PE fixing layer and the electric insulating layer are low in dielectric loss and high in dielectric strength, so that the cable is integrally excellent in insulating performance, and the wear resistance and safety of the cable are enhanced through the corrugated aluminum sheath layer, so that the cable can be applied in different environments.
Drawings
FIG. 1 is a schematic view of the external structure of the present utility model;
FIG. 2 is a schematic view of an external structure at another angle according to the present utility model;
FIG. 3 is a schematic diagram of the internal structure of the present utility model.
In the figure: 1. a semiconductive encapsulation layer; 2. a flame retardant ring layer; 3. a PE fixing layer; 4. a flame retardant liquid; 5. an electrically insulating layer; 6. corrugated aluminum sheath layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the utility model discloses a flame-retardant insulating semi-conductive copper-clad wire sheath material, which comprises a semi-conductive wrapping layer 1 and a flame-retardant ring layer 2 sleeved on the outer side surface of the semi-conductive wrapping layer 1, wherein a plurality of flame-retardant ring layers 2 are sequentially sleeved on the outer side surface of the semi-conductive wrapping layer 1, a PE fixing layer 3 is wrapped on the outer side surface of the flame-retardant ring layer 2, a flame-retardant liquid 4 is filled between the PE fixing layer 3 and the flame-retardant ring layer 2, an electric insulating layer 5 is sleeved on the outer side surface of the PE fixing layer 3, and a corrugated aluminum sheath layer 6 is wrapped on the outer side surface of the electric insulating layer 5.
Specifically, the flame-retardant ring layer 2 is made of ceramic silicone rubber, the ceramic silicone rubber is an advanced material with the characteristics of fire resistance, flame retardance, low smoke, no toxicity and the like, the ceramic silicone rubber is a composite material prepared by a blending method by taking methyl vinyl silicone rubber as a matrix and adding other fillers such as ceramic rubber flame retardants and the like according to a proportion, the residue after combustion is a hard ceramic shell, a hard shell is not melted and does not drip in a fire environment, the hard shell can be subjected to fire for 90min at 950-1000 ℃ through the specification in GB/T19216.21-2003, and the flame-retardant ring is cooled for 15min for line integrity experiments, so that the flame-retardant ring is suitable for any place needing fire resistance, and can ensure smooth power transmission under the condition of fire, and the outer diameter and inner diameter size difference of the flame-retardant ring layer 2 is 3-5mm, and the length of the flame-retardant ring layer is 5-8mm.
Furthermore, the nominal thickness of the PE fixing layer 3 is 2.8-3.4mm, and the PE fixing layer 3 is prepared by mixing polyethylene and ultraviolet-resistant master batch.
Furthermore, the flame retardant liquid 4 is prepared by mixing chlorinated paraffin and phenolic resin glue, and reinforcing connection is performed through the flame retardant liquid 4, so that bending performance is guaranteed, and meanwhile, the influence of gaps between the flame retardant ring layers 2 on flame retardant effect is avoided.
Further, the semi-conductive coating layer 1 adopts a semi-conductive layer coated with graphite, and the semi-conductive coating layer 1 coated with graphite ensures that the whole cable has semi-conductive performance, and the nominal thickness is 0.25-0.35mm.
Furthermore, the electrical insulation layer 5 is made of chlorinated polyethylene material, the nominal thickness of the electrical insulation layer 5 is 5.5-6.5mm, and the PE fixing layer 3 and the electrical insulation layer 5 have low dielectric loss and high dielectric strength, so that the cable has excellent insulation performance as a whole.
Furthermore, the corrugated aluminum sheath layer 6 adopts an aluminum belt with the nominal thickness of 2.8mm, and the whole wear resistance and the safety of the cable are enhanced through the corrugated aluminum sheath layer 6, so that the corrugated aluminum sheath layer 6 can meet the application under different environments, the width is 450mm, the embossing pitch is 18-35 mm, and the depth is 6-7 mm.
The integral flame retardant performance is improved through the flame retardant ring layer 2, the flame retardant ring layer 2 is made of ceramic silicon rubber, residues after combustion are a hard ceramic shell, a hard shell is not melted and is not dripped in a fire disaster environment, smooth power transmission can be ensured under the condition of the fire disaster, the continuous ring layer structure is adopted by the flame retardant ring layer 2, so that the integral bending performance of the cable is better, and meanwhile, the reinforced connection is carried out through the flame retardant liquid 4, so that the bending performance is ensured, and meanwhile, the influence of gaps among the flame retardant ring layers 2 on the flame retardant effect is avoided;
according to the utility model, the PE fixing layer 3 and the electric insulating layer 5 have low dielectric loss and high dielectric strength, so that the whole cable has excellent insulating property, and the wear resistance and safety of the whole cable are enhanced through the corrugated aluminum sheath layer 6, so that the cable can be applied in different environments.
It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a fire-retardant insulating semiconductive copper line cover material, includes semiconductive coating (1) and suit at semiconductive coating (1) outside surface's fire-retardant circle layer (2), its characterized in that: the flame-retardant coating comprises a plurality of flame-retardant ring layers (2) which are sequentially sleeved on the outer side surface of a semi-conductive wrapping layer (1), PE fixing layers (3) are wrapped on the outer side surface of the flame-retardant ring layers (2), flame-retardant liquid (4) is filled between the PE fixing layers (3) and the flame-retardant ring layers (2), an electric insulating layer (5) is sleeved on the outer side surface of each PE fixing layer (3), and a corrugated aluminum sheath layer (6) is wrapped on the outer side surface of each electric insulating layer (5).
2. The flame retardant insulated semiconducting copper sheathing compound of claim 1, wherein: the flame-retardant ring layer (2) is made of ceramic silicon rubber, the size difference between the outer diameter and the inner diameter of the flame-retardant ring layer (2) is 3-5mm, and the length of the flame-retardant ring layer (2) is 5-8mm.
3. The flame retardant insulated semiconducting copper sheathing compound of claim 1, wherein: the nominal thickness of the PE fixing layer (3) is 2.8-3.4mm, and the PE fixing layer (3) is prepared by mixing polyethylene and ultraviolet-resistant master batch.
4. The flame retardant insulated semiconducting copper sheathing compound of claim 1, wherein: the flame-retardant liquid (4) is prepared by mixing chlorinated paraffin and phenolic resin glue.
5. The flame retardant insulated semiconducting copper sheathing compound of claim 1, wherein: the semi-conductive coating layer (1) adopts a semi-conductive layer coated with graphite, and the nominal thickness is 0.25-0.35mm.
6. The flame retardant insulated semiconducting copper sheathing compound of claim 1, wherein:
the electric insulation layer (5) is made of chlorinated polyethylene material, and the nominal thickness of the electric insulation layer (5) is 5.5-6.5mm.
7. The flame retardant insulated semiconducting copper sheathing compound of claim 1, wherein: the corrugated aluminum sheath layer (6) adopts an aluminum belt with the nominal thickness of 2.8mm, the width of the aluminum belt is 450mm, the embossing pitch is 18-35 mm, and the depth is 6-7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131079.2U CN220121535U (en) | 2023-05-10 | 2023-05-10 | Flame-retardant insulating semiconductive copper-protection wire jacket material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131079.2U CN220121535U (en) | 2023-05-10 | 2023-05-10 | Flame-retardant insulating semiconductive copper-protection wire jacket material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220121535U true CN220121535U (en) | 2023-12-01 |
Family
ID=88914482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321131079.2U Active CN220121535U (en) | 2023-05-10 | 2023-05-10 | Flame-retardant insulating semiconductive copper-protection wire jacket material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121535U (en) |
-
2023
- 2023-05-10 CN CN202321131079.2U patent/CN220121535U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205282143U (en) | Fire -retardant fireproof cable of flexible inorganic mineral insulation low smoke and zero halogen | |
| US10236098B1 (en) | Fireproof cable with ceramified silicone rubber insulating sheath and stainless steel interlocked armor | |
| CN101071658A (en) | Waterproof power cable and its manufacturing method | |
| CN104464911A (en) | Low smoke halogen-free flame-retardant fireproof medium-voltage flexible cable | |
| CN204303399U (en) | Flexible cable is pressed in low smoke halogen-free fire retardant fire resistant | |
| CN210429395U (en) | Heat dissipation type fireproof insulated cable | |
| RU57958U1 (en) | SEALED, BASICALLY FIRE RESISTANT CABLE | |
| GB2050041A (en) | Fire resistant cable | |
| CN220121535U (en) | Flame-retardant insulating semiconductive copper-protection wire jacket material | |
| CN210271903U (en) | High-performance low-smoke halogen-free flame-retardant low-noise cable | |
| CN209461203U (en) | A kind of cable of fire-proof damage-proof | |
| CN207517429U (en) | A kind of water-proof cable | |
| CN206685177U (en) | A kind of high temperature resistant fire resisting flexible pavement vehicle high-tension cable | |
| US4959266A (en) | Urethane-resin coated electrical wire having an intermediate layer | |
| KR20170141090A (en) | Wire composition with high fire resistance and flame retardant using carbon material | |
| CN205211442U (en) | Pottery high flexibility fireproof cable | |
| CN210467393U (en) | Insulating fire prevention type mineral substance cable | |
| CN112071491A (en) | Medium-voltage fireproof cable and preparation method thereof | |
| CN208507231U (en) | A kind of mineral insulated cable | |
| CN207441339U (en) | A kind of high-speed EMU cable | |
| CN105006279A (en) | Ceramic fireproof cable with high flexibility | |
| CN205582531U (en) | 150kV high voltage DC flexible cable | |
| CN220651682U (en) | Multilayer bonding insulated cable | |
| CN219800523U (en) | Flame-retardant water-blocking flexible power cable | |
| CN204667961U (en) | A kind of increasing volume type water proof fire retardant cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |