CN114005586A - Electric wire and preparation method thereof - Google Patents
Electric wire and preparation method thereof Download PDFInfo
- Publication number
- CN114005586A CN114005586A CN202111212883.9A CN202111212883A CN114005586A CN 114005586 A CN114005586 A CN 114005586A CN 202111212883 A CN202111212883 A CN 202111212883A CN 114005586 A CN114005586 A CN 114005586A
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- Prior art keywords
- electric wire
- waterproof layer
- layer
- conductor
- wire according
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Links
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000010410 layer Substances 0.000 claims abstract description 64
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 239000011241 protective layer Substances 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 14
- 230000009970 fire resistant effect Effects 0.000 claims description 11
- 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 claims description 8
- 239000003063 flame retardant Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 7
- 229910052618 mica group Inorganic materials 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- 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
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/189—Radial force absorbing layers providing a cushioning effect
-
- 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
-
- 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
Abstract
The invention relates to the technical field of cables, in particular to an electric wire and a preparation method thereof. An electric wire comprises a conductor, a first waterproof layer, a second waterproof layer and an outer protective layer which are sequentially arranged from inside to outside. The invention provides a wire with a good waterproof effect at high temperature and a preparation method thereof.
Description
Technical Field
The invention relates to the technical field of cables, in particular to an electric wire and a preparation method thereof.
Background
Current wire products cannot pass BS 6387: 2013, after a fire occurs, water is directly sprayed on the surface of the wire, so that a mineral layer is rapidly cooled to crack, and the water passes through a conductor to cause short-circuit failure. Therefore, the existing fireproof electric wire is additionally provided with the waterproof layer, but when the temperature of a fire scene is higher, the waterproof layer is also likely to crack, so that water permeates into the surface of the conductor from the crack, and a short-circuit accident still occurs.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect of poor waterproof effect of the electric wire at high temperature in the prior art, so that the electric wire with good waterproof effect at high temperature and the preparation method thereof are provided.
In order to solve the above technical problem, the present invention provides an electric wire including:
the cable comprises a conductor, a first waterproof layer, a second waterproof layer and an outer protective layer which are sequentially arranged from inside to outside.
Optionally, the first waterproof layer is a composite strip of metal and plastic, and the second waterproof layer is a polymer waterproof layer.
Optionally, the metal and plastic composite strip is an aluminum-plastic composite strip, and the polymer waterproof layer is ceramic silicone rubber.
Optionally, the cable further comprises a first fire resistant layer disposed between the conductor and the first waterproof layer.
Optionally, the first fire-resistant layer is a three-in-one mica tape.
Optionally, the outer jacket is a low smoke zero halogen flame retardant polyolefin sheath.
Also provided is a method for manufacturing an electric wire, comprising the steps of:
after the conductor is longitudinally wrapped with the first waterproof layer, the second waterproof layer is extruded to be wrapped outside the first waterproof layer, then the outer protective layer is extruded, and the electric wire is sealed.
Optionally, the method further comprises the step of wrapping the first fire-proof layer around the conductor before longitudinally wrapping the first waterproof layer.
Optionally, the width of the first waterproof layer is 1.1 times of the circumference of the conductor after wrapping the first fireproof layer.
Optionally, the first waterproof layer is coated on the first fireproof layer through an adhesive.
The technical scheme of the invention has the following advantages:
1. according to the electric wire provided by the invention, when a fire disaster occurs, the outer protective layer is slowly carbonized and peeled off along with the continuous combustion of external flame, and even if the second waterproof layer cracks at high temperature to generate a gap, water used in fire extinguishment cannot enter the electric wire through the gap due to the arrangement of the first waterproof layer, so that the waterproof effect of the electric wire is improved, and the occurrence of short-circuit accidents is avoided.
2. According to the electric wire provided by the invention, the second waterproof layer is made of ceramic silicon rubber, and has good fireproof and waterproof effects, the electric wire can be rapidly crust at high temperature to form a closed container, the fireproof time is prolonged, slight burning objects fall on the surface of the ceramic silicon rubber crust layer without any damage to the interior of the electric wire, and a layer of ceramic armor is arranged on the electric wire in a penetrating manner, so that the electric wire is resistant to high temperature and vibration, and simultaneously forms a double-waterproof structure with an aluminum-plastic composite tape, and the waterproof effect is further ensured.
3. According to the electric wire provided by the invention, the first fireproof layer is a three-in-one mica tape which is quickly crusted after being heated, so that the super-long continuous fireproof time is provided for the electric wire, and a double fireproof structure is formed with the ceramic silicon rubber, so that the fireproof effect is further ensured, and the life guarantee is provided for fire rescue.
4. According to the preparation method of the electric wire, the width of the first waterproof layer is 1.1 times of the perimeter of the conductor after the first fireproof layer is wrapped, and the first waterproof layer is coated on the first fireproof layer through the adhesive, so that the waterproof effect is further guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic cross-sectional view of a wire according to the present invention.
Description of reference numerals:
1. a conductor; 2. a first fire resistant layer; 3. a first waterproof layer; 4. a second waterproof layer; 5. an outer jacket.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A specific embodiment of the electric wire shown in fig. 1 includes a conductor 1, a first fireproof layer 2, a first waterproof layer 3, a second waterproof layer 4, and an outer sheath 5, which are sequentially disposed from inside to outside.
The first fireproof layer 2 is a three-in-one mica tape and is heated to be quickly crusted. The mica paper is used as a base material, and the glass fiber cloth and the carbon-free film are used as single-side reinforcing materials, so that the fireproof performance is better.
The first waterproof layer 3 is a composite strip of metal and plastic, for example, an aluminum-plastic composite strip.
The second waterproof layer 4 is a polymer waterproof layer, such as ceramic silicone rubber. The ceramic silicon rubber can resist the high temperature of 3000 ℃ at most, the current-carrying capacity of one specification of the electric wire can be improved under the conventional condition, the current-carrying capacity is 24-26A when a common BV2.5mm2 pipe is penetrated, the current-carrying capacity can reach 32-35A when a ceramic silicon rubber 2.5mm2 pipe is penetrated, the current-carrying capacity reaches the common BV4mm2 pipe is penetrated, and the electricity consumption and the design cost can be saved. The ceramic silicon rubber is quickly crusted when the external flame reaches more than 500 ℃, the fire-resistant temperature of the crusted ceramic silicon rubber can reach more than 2000 ℃, and the ceramic silicon rubber can be continuously fire-resistant and burnt within 950 +/-40 ℃ for 180min, so that the ceramic silicon rubber can be used as a second fire-resistant layer. Meanwhile, the sealed ceramic container and the aluminum-plastic composite belt form a double waterproof structure, and even if ceramic silicon rubber cracks in the crusting process, moisture is intercepted outside due to the blocking of the aluminum-plastic composite belt, so that water sprayed from the outside cannot penetrate into the electric wire.
The outer protective layer 5 is a low-smoke halogen-free flame-retardant polyolefin protective layer, so that a large amount of smoke and toxic and harmful substances cannot be generated during combustion, and the life and property safety of people is guaranteed.
A method of making an electrical wire comprising the steps of:
wrapping a three-in-one mica tape outside the conductor; then uniformly coating glue on the aluminum-plastic composite tape, longitudinally wrapping the aluminum-plastic composite tape, calculating the perimeter according to the outer diameter, and adopting the width of the aluminum-plastic composite tape to be 1.1 times of the perimeter of the conductor wrapped with the three-in-one mica tape so as to enable the aluminum-plastic composite tape to be overlapped and bonded by 10 percent; extruding ceramic silicon rubber to wrap the aluminum-plastic composite belt so as to completely fit the aluminum-plastic composite belt; then high-oxygen-index low-smoke halogen-free flame-retardant polyolefin is extruded and wrapped, and the electric wire is sealed so as to increase the insulating property and the flame-retardant property of the electric wire.
The fire-resistant temperature of the wire prepared by the embodiment is increased from the original 750-800 ℃ to 950 +/-40 ℃; the fire-resistant time is prolonged from 90min to 180 min; the conditions of the electric wire running in fire-resistant, spraying and vibrating states in a fire disaster can be simulated by GB/T19666-2019 and BS 6387: 2013.
As an alternative embodiment, the first waterproof layer 3 may also be a composite strip of alloy and plastic.
As an alternative embodiment, the second waterproof layer 4 may also be fire-proof mud.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides an electric wire, its characterized in that includes conductor (1), first waterproof layer (3), second waterproof layer (4) and outer jacket (5) that set gradually from inside to outside.
2. The electric wire according to claim 1, wherein the first waterproof layer (3) is a composite tape of metal and plastic, and the second waterproof layer (4) is a polymer waterproof layer.
3. The electric wire according to claim 2, wherein the metal-plastic composite tape is an aluminum-plastic composite tape, and the polymer waterproof layer is a ceramic silicone rubber.
4. An electric wire according to any one of claims 1-3, further comprising a first fire resistant layer (2) provided between the conductor (1) and the first water resistant layer (3).
5. Electrical wire according to claim 4, characterised in that the first fire-resistant layer (2) is a three-in-one mica tape.
6. The electric wire according to any one of claims 1 to 5, wherein said outer sheath (5) is a low smoke zero halogen flame retardant polyolefin sheath.
7. A method for manufacturing an electric wire, comprising the steps of:
after the conductor (1) is longitudinally wrapped with the first waterproof layer (3), the second waterproof layer (4) is extruded to be wrapped outside the first waterproof layer (3), and then the outer protective layer (5) is extruded to seal the electric wire.
8. The method for manufacturing an electric wire according to claim 7, further comprising the step of wrapping the first flame retardant layer (2) around the conductor (1) before longitudinally wrapping the first waterproof layer (3).
9. The method for manufacturing an electric wire according to claim 8, wherein the width of the first waterproof layer (3) is 1.1 times the circumference of the conductor after wrapping the first flame-retardant layer (2).
10. Method for manufacturing an electric wire according to claim 8 or 9, wherein said first waterproof layer (3) is coated on said first flame-retardant layer (2) by means of an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111212883.9A CN114005586A (en) | 2021-10-18 | 2021-10-18 | Electric wire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111212883.9A CN114005586A (en) | 2021-10-18 | 2021-10-18 | Electric wire and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114005586A true CN114005586A (en) | 2022-02-01 |
Family
ID=79923171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111212883.9A Pending CN114005586A (en) | 2021-10-18 | 2021-10-18 | Electric wire and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114005586A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201146073Y (en) * | 2008-01-24 | 2008-11-05 | 上海浦东电线电缆(集团)有限公司 | Flame-proof flame-proof low-smoke non-halogen water-proof anti-rat season-resistant type DC cable |
| CN202917232U (en) * | 2012-11-13 | 2013-05-01 | 李海龙 | Electric wire |
| CN104916353A (en) * | 2015-05-22 | 2015-09-16 | 上海亨公电线电缆有限公司 | Ceramic silicon rubber insulated cable capable of resisting high temperature of 1000 DEG C |
| CN204732204U (en) * | 2015-05-12 | 2015-10-28 | 上海贝恩科电缆有限公司 | The fire-resistant waterproof flexible cable of Ceramic silicon rubber |
| CN108986975A (en) * | 2018-07-31 | 2018-12-11 | 扬州明宇线缆有限公司 | A kind of anti-tampering cable of Novel fireproof |
| CN213483437U (en) * | 2020-09-15 | 2021-06-18 | 双登电缆股份有限公司 | Aluminum alloy conductor aluminum-plastic composite tape shielding waterproof cable for photovoltaic power generation system |
-
2021
- 2021-10-18 CN CN202111212883.9A patent/CN114005586A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201146073Y (en) * | 2008-01-24 | 2008-11-05 | 上海浦东电线电缆(集团)有限公司 | Flame-proof flame-proof low-smoke non-halogen water-proof anti-rat season-resistant type DC cable |
| CN202917232U (en) * | 2012-11-13 | 2013-05-01 | 李海龙 | Electric wire |
| CN204732204U (en) * | 2015-05-12 | 2015-10-28 | 上海贝恩科电缆有限公司 | The fire-resistant waterproof flexible cable of Ceramic silicon rubber |
| CN104916353A (en) * | 2015-05-22 | 2015-09-16 | 上海亨公电线电缆有限公司 | Ceramic silicon rubber insulated cable capable of resisting high temperature of 1000 DEG C |
| CN108986975A (en) * | 2018-07-31 | 2018-12-11 | 扬州明宇线缆有限公司 | A kind of anti-tampering cable of Novel fireproof |
| CN213483437U (en) * | 2020-09-15 | 2021-06-18 | 双登电缆股份有限公司 | Aluminum alloy conductor aluminum-plastic composite tape shielding waterproof cable for photovoltaic power generation system |
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| PB01 | Publication | ||
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Application publication date: 20220201 |