CN110070963A - A kind of PVC cable and preparation method thereof - Google Patents
A kind of PVC cable and preparation method thereof Download PDFInfo
- Publication number
- CN110070963A CN110070963A CN201910277430.0A CN201910277430A CN110070963A CN 110070963 A CN110070963 A CN 110070963A CN 201910277430 A CN201910277430 A CN 201910277430A CN 110070963 A CN110070963 A CN 110070963A
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- layer
- pvc cable
- retardant
- halogen
- fire
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Classifications
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of PVC cables and preparation method thereof, belong to wire and cable production technical field, its drip irrigation device includes the inner core, insulating layer and oversheath set gradually from inside to outside, the oversheath includes the internal layer set gradually from inside to outside, middle layer and outer layer, the internal layer is metallic spacer, the middle layer is ethylene-tetrafluoroethylene copolymer layer, the outer layer is low-smoke non-halogen flame-retardant layer, the present invention has the advantages of reaching fire-retardant purpose simultaneously, avoiding the generation of toxic gas.
Description
Technical field
The invention belongs to wire and cable production technical fields, and more specifically it is related to a kind of PVC cable and its system
Preparation Method.
Background technique
In field of aerospace, wire and cable will also meet high temperature resistant, volume other than requirement on electric performance to be met
Small, light-weight, fire-retardant, high-intensitive, chemical-resistant stability and the severe ring extremely complicated there are various rays and ultraviolet radiation
Cable is able to maintain its distinctive flexibility and high dielectric strength in border.
Currently, the wire and cable in field of aerospace is applied mainly to use polyvinyl chloride, neoprene, chlorosulfonation
The halogen containing materials such as polyethylene achieve the purpose that fire-retardant as the oversheath of cable.
But above-mentioned material can generate a large amount of dense smokes, corrosive gas and toxic gas (such as chlorine) in burning,
Smog block vision brings difficulty to bring adverse effect, so that fire rescue is more difficult to fire extinguishing and personnel escape.
Summary of the invention
In view of the deficienciess of the prior art, the first object of the present invention is to provide a kind of PVC cable, have
The advantages of reaching fire-retardant purpose simultaneously, avoiding the generation of toxic gas.
To achieve the above object, the present invention provides the following technical scheme that a kind of PVC cable, including from inside to outside
Inner core, insulating layer and the oversheath set gradually, the oversheath include the internal layer set gradually from inside to outside, middle layer and outer
Layer, the internal layer are metallic spacer, and the middle layer is ethylene-tetrafluoroethylene copolymer layer, and the outer layer is low smoke and zero halogen
Flame-retardant layer.
By using above-mentioned technical proposal, the metal material in metallic spacer can be steel, copper or aluminium, and it is resistance to meet high fire-retardance
The characteristic of fire；Ethylene-tetrafluoroethylene copolymer layer has preferable heat-resisting, chemical-resistance and electrical insulation capability；Low smoke and zero halogen
Flame-retardant layer is non-halogen, non-phosphorus, without heavy metal high-molecular organic material, and when expanded by heating will form a non-flammable charcoal
Change layer, effective starvation and extraneous heat transmitting and heat radiation, and Burning corrosion resistance is strong, has generated after burning without black smoke, not
Evil gas.
To sum up, relative to using oversheath made of pvc material, above-mentioned internal layer, middle layer and outer layer are formed outer
Sheath is halogen-free, and can reached fire-retardant purpose simultaneously, avoided the generation of toxic gas.
The present invention is further arranged to: chain link fence, the metal protection are provided between the middle layer and internal layer
Net is wrapped in the outside of the internal layer.
By using above-mentioned technical proposal, the setting of chain link fence can not only securely fix internal layer, and can rise
To fire retardation.
The present invention is further arranged to: the side of the internal layer is provided with the mesh of several correspondences chain link fence
Locating slot, the mesh that chain link fence is provided through on the inner wall of the middle layer are placed in positioning in the locating slot
Block.
By using above-mentioned technical proposal, when the mesh that the locating piece in middle layer passes through chain link fence is placed in positioning
When in slot, it can avoid chain link fence and generate loosening between middle layer and internal layer, be conducive to after improving chain link fence installation
Stability.
The present invention is further arranged to: the locating piece is in hollow structure, is filled with halogen-free flame retardants in the locating piece
With active nano magnesium carbonate.
By using above-mentioned technical proposal, halogen-free flame retardants can make locating piece have anti-flammability, further increase outer layer
Flame retardant effect, and active nano magnesium carbonate has goodization hood, it is possible to reduce the smoke amount of halogen-free flame retardants.
The present invention is further arranged to: the weight ratio of the halogen-free flame retardants and active nano magnesium carbonate is 1:3.
By using above-mentioned technical proposal, the rational proportion of halogen-free flame retardants and active nano magnesium carbonate can play nothing
While halogen fire retardant optimum resistance combustion acts on, the discharge of smog is reduced.
The present invention is further arranged to: the halogen-free flame retardants is magnesium hydroxide or zinc borate.
By using above-mentioned technical proposal, magnesium hydroxide is with thermal stability is good, does not generate toxic gas and can neutralize
The advantages that acidity in combustion process, corrosive gas；Zinc borate have nontoxic, better heat stability, prevent generate molten drop and
A variety of efficiency such as electric arc can be extinguished.
The present invention is further arranged to: the side of the protective jacket is evenly distributed in several fire-retardant pieces, described fire-retardant piece
Filled with the solid of getting angry for generating fire-retardant gas.
By using above-mentioned technical proposal, when fire-retardant piece by thermal fracture, solid of getting angry can produce fire-retardant gas, slow down fire
The sprawling of gesture.
The present invention is further arranged to: the solid of getting angry includes solid sodium nitrite and solid ammonium chloride.
By using above-mentioned technical proposal, solid sodium nitrite and solid ammonium chloride can generate phase in the state of heating
The fire-retardant gas such as nitrogen, the sodium chloride of ratio are answered, and these substances are nontoxic, it can be by the use of safety.
The second object of the present invention is to provide a kind of preparation method of PVC cable, the advantage is that flame retardant effect
It is good and highly-safe.
To achieve the above object, the present invention provides the following technical scheme that a kind of preparation method of PVC cable, packet
Include following steps:
S1, choose cross-sectional diameter be 0.4-0.5mm copper wire, by copper wire at 500-600 DEG C annealing softening；
S2, inner core is made with a thickness of 0.6-1.0mm in 8-10 root copper wire spiral weave in；
S3, insulating layer is wrapped up in the outside of inner core, with a thickness of 0.6-0.9mm；
S4, the oversheath being made of internal layer, middle layer and outer layer is prepared as required, internal layer is metallic spacer, and middle layer is second
Alkene-TFE copolymer layer, outer layer are low-smoke non-halogen flame-retardant layer；
S5, oversheath obtained in step S4 is wrapped on the outside of insulating layer, cable is made.
By using above-mentioned technical proposal, during the preparation process, due to internal layer, middle layer and outer layer composition oversheath,
And internal layer is metallic spacer, middle layer is ethylene-tetrafluoroethylene copolymer layer, and outer layer is low-smoke non-halogen flame-retardant layer, so as to
Enough make cable obtained that there is preferable flame retardant effect and safety.
Invention is further arranged to: the contact surface of the middle layer and outer layer is helicitic texture.
By using above-mentioned technical proposal, the design of helicitic texture can effectively avoid generating between middle layer and outer layer
Relative sliding is conducive to improve oversheath stability after molding.
In conclusion the invention has the following advantages that
1, it is halogen-free by the oversheath that internal layer, middle layer and outer layer are formed, without black smoke after burning, fire-retardant purpose can reached
Meanwhile avoiding the generation of toxic gas；
2, by the setting of chain link fence, internal layer can not only be securely fixed, and fire retardation can be played；
3, it is placed in locating slot by the mesh for making the locating piece in middle layer pass through chain link fence, can avoid metal protection
Net generates loosening between outer layer and internal layer, the stability after improving chain link fence installation.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the present embodiment；
Fig. 2 is the schematic cross-sectional view of oversheath in the present embodiment.
Description of symbols: 1, inner core；2, insulating layer；3, oversheath；31, internal layer；32, middle layer；33, outer layer；4, golden
Belong to protective net；5, locating slot；6, locating piece；7, fire-retardant piece；8, it gets angry solid.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of PVC cable, as shown in Figure 1, 2, including the inner core 1, insulating layer 2 and outer shield set gradually from inside to outside
Set 3.Specifically, oversheath 3 includes internal layer 31, middle layer 32 and the outer layer 33 set gradually from inside to outside, and internal layer 31 is metal
Separation layer, middle layer 32 are ethylene-tetrafluoroethylene copolymer layer, and outer layer 33 is low-smoke non-halogen flame-retardant layer.
As shown in Fig. 2, being provided with chain link fence 4 between middle layer 32 and internal layer 31, chain link fence 4 is wrapped in internal layer
Internal layer 31 can not only be securely fixed by chain link fence 4, and can play fire retardation by 31 outside.
Further, loosening is generated between outer layer 33 and internal layer 31 in order to avoid chain link fence 4, improves metal protection
Net 4 install after stability, the side of internal layer 31 is provided with the positioning of the mesh of several corresponding chain link fences 4 in the present embodiment
Slot 5 is fixed with the locating piece 6 that the mesh across chain link fence 4 is placed in locating slot 5 on the inner wall of middle layer 32.
As shown in Fig. 2, locating piece 6 is in hollow structure, in locating piece 6 filled with the halogen-free flame retardants that weight ratio is 1:3 and
Active nano magnesium carbonate, halogen-free flame retardants are magnesium hydroxide.It can make locating piece 6 that there is anti-flammability by halogen-free flame retardants, into one
Step improves the flame retardant effect of outer layer 33, and active nano magnesium carbonate has goodization hood, it is possible to reduce halogen-free flame retardants
Smoke amount.
As shown in Figure 1, 2, the side of outer layer 33 is evenly distributed in several fire-retardant pieces 7, fire-retardant piece 7 filled with for generating
The solid 8 of getting angry of fire-retardant gas, when fire-retardant piece 7 by thermal fracture, solid 8 of getting angry can produce fire-retardant gas, slow down the climing of the intensity of a fire
Prolong.Specifically, solid 8 of getting angry includes solid sodium nitrite and solid ammonium chloride, and solid sodium nitrite and solid ammonium chloride are adding
The fire-retardant gas such as nitrogen, the sodium chloride of corresponding proportion can be generated in the state of heat, and these substances are nontoxic, it can be by
The use of safety.
A kind of preparation method of PVC cable, comprising the following steps:
S1, choose cross-sectional diameter be 0.4-0.5mm copper wire, by copper wire at 500-600 DEG C annealing softening.
S2, inner core 1 is made with a thickness of 0.6-1.0mm in 8-10 root copper wire spiral weave in.
S3, insulating layer 2 is wrapped up in the outside of inner core 1, with a thickness of 0.6-0.9mm.
S4, the oversheath 3 being made of internal layer 31, middle layer 32 and outer layer 33 is prepared as required, internal layer 31 is metal isolation
Layer, middle layer 32 are ethylene-tetrafluoroethylene copolymer layer, and outer layer 33 is low-smoke non-halogen flame-retardant layer.Wherein, in order to avoid middle layer
Relative sliding is generated between 32 and outer layer 33, middle layer 32 and the contact surface of outer layer 33 are processed as helicitic texture.
S5, oversheath 3 obtained in step S4 is wrapped in 2 outside of insulating layer, cable is made.
The course of work of the invention and have the beneficial effect that: when encountering fire, fire-retardant piece 7 by thermal fracture, solid 8 of getting angry
It can produce fire-retardant gas, slow down the sprawling of the intensity of a fire；And it will form a non-flammable charcoal when low-smoke non-halogen flame-retardant layer expanded by heating
Change layer, effective starvation and extraneous heat transmitting and heat radiation, and Burning corrosion resistance is strong, has generated after burning without black smoke, not
Evil gas.In addition, metal material in metallic spacer can be steel, copper or aluminium, meet the characteristic of high fire-retardance fire resisting, and ethylene-
TFE copolymer layer has preferable heat-resisting, chemical-resistance and electrical insulation capability, can further improve fire-retardant effect；
To sum up, relative to using oversheath 3 made of pvc material, the present invention uses internal layer 31, middle layer 32 and outer layer
33 oversheaths 3 formed are halogen-free, and can reached fire-retardant purpose simultaneously, avoided the generation of toxic gas.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to restrict the invention, all in design structure of the invention
Within think of, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of PVC cable, special including the inner core (1), insulating layer (2) and oversheath (3) set gradually from inside to outside
Sign is: the oversheath (3) includes the internal layer (31) set gradually from inside to outside, middle layer (32) and outer layer (33), described
Internal layer (31) is metallic spacer, and the middle layer (32) is ethylene-tetrafluoroethylene copolymer layer, and the outer layer (33) is low cigarette
Halogen-free flameproof layer.
2. a kind of PVC cable according to claim 1, it is characterised in that: the middle layer (32) and internal layer (31)
Between be provided with chain link fence (4), the chain link fence (4) is wrapped in the outside of the internal layer (31).
3. a kind of PVC cable according to claim 2, it is characterised in that: the side of the internal layer (31) is provided with
The locating slot (5) of the mesh of several correspondence chain link fences (4) is provided through gold on the inner wall of the middle layer (32)
The mesh for belonging to protective net (4) is placed in the locating piece (6) in the locating slot (5).
4. a kind of PVC cable according to claim 3, it is characterised in that: the locating piece (6) is in hollow structure,
Halogen-free flame retardants and active nano magnesium carbonate are filled in the locating piece (6).
5. a kind of PVC cable according to claim 4, it is characterised in that: it is characterized by: the halogen-free flame retardants
Weight ratio with active nano magnesium carbonate is 1:3.
6. a kind of PVC cable according to claim 5, it is characterised in that: the halogen-free flame retardants is magnesium hydroxide
Or zinc borate.
7. a kind of PVC cable according to claim 1, it is characterised in that: the side of the outer layer (33) is uniformly divided
It is furnished with several fire-retardant piece (7), filled with the solid of getting angry (8) for generating fire-retardant gas in fire-retardant piece (7).
8. a kind of PVC cable according to claim 7, it is characterised in that: the solid of getting angry (8) includes solid Asia
Sodium nitrate and solid ammonium chloride.
9. a kind of preparation method of PVC cable, it is characterised in that: the following steps are included:
S1, choose cross-sectional diameter be 0.4-0.5mm copper wire, by copper wire at 500-600 DEG C annealing softening；
S2, inner core (1) is made with a thickness of 0.6-1.0mm in 8-10 root copper wire spiral weave in；
S3, insulating layer (2) are wrapped up in the outside of inner core (1), with a thickness of 0.6-0.9mm；
S4, the oversheath (3) being made of internal layer (31), middle layer (32) and outer layer (33) is prepared as required, internal layer (31) is gold
Belong to separation layer, middle layer (32) is ethylene-tetrafluoroethylene copolymer layer, and outer layer (33) is low-smoke non-halogen flame-retardant layer；
S5, oversheath (3) obtained in step S4 is wrapped on the outside of insulating layer (2), cable is made.
10. a kind of preparation method of PVC cable according to claim 9, it is characterised in that: the middle layer (32)
Contact surface with outer layer (33) is helicitic texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277430.0A CN110070963A (en) | 2019-04-08 | 2019-04-08 | A kind of PVC cable and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277430.0A CN110070963A (en) | 2019-04-08 | 2019-04-08 | A kind of PVC cable and preparation method thereof |
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| CN110070963A true CN110070963A (en) | 2019-07-30 |
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| CN201910277430.0A Pending CN110070963A (en) | 2019-04-08 | 2019-04-08 | A kind of PVC cable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114937524A (en) * | 2022-06-27 | 2022-08-23 | 宁波新天用电线电缆实业有限公司 | High-flame-retardancy cable and preparation method thereof |
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|---|---|---|---|---|
| JPH07163671A (en) * | 1993-12-13 | 1995-06-27 | Furukawa Techno Material:Kk | Fireproof processing structure of combustible cable, and kit used therefor |
| CN203982882U (en) * | 2014-06-03 | 2014-12-03 | 淮南新光神光纤线缆有限公司 | A kind of crosslinked ethene-tetrafluoroethylene copolymer control cables |
| CN105931712A (en) * | 2016-04-22 | 2016-09-07 | 安徽瑞莱尔仪表有限公司 | Copper alloy cable with great fire resistance |
| CN105931732A (en) * | 2016-06-17 | 2016-09-07 | 天津朗兴电线电缆有限公司 | Cable for coal mine |
| CN109087748A (en) * | 2018-08-15 | 2018-12-25 | 金学庆 | A kind of fire-retardant fireproof power cable |
| CN208548177U (en) * | 2018-07-23 | 2019-02-26 | 扬州中大电缆有限公司 | A kind of high-performance warp resistance flame retardant type wind energy cable |
-
2019
- 2019-04-08 CN CN201910277430.0A patent/CN110070963A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07163671A (en) * | 1993-12-13 | 1995-06-27 | Furukawa Techno Material:Kk | Fireproof processing structure of combustible cable, and kit used therefor |
| CN203982882U (en) * | 2014-06-03 | 2014-12-03 | 淮南新光神光纤线缆有限公司 | A kind of crosslinked ethene-tetrafluoroethylene copolymer control cables |
| CN105931712A (en) * | 2016-04-22 | 2016-09-07 | 安徽瑞莱尔仪表有限公司 | Copper alloy cable with great fire resistance |
| CN105931732A (en) * | 2016-06-17 | 2016-09-07 | 天津朗兴电线电缆有限公司 | Cable for coal mine |
| CN208548177U (en) * | 2018-07-23 | 2019-02-26 | 扬州中大电缆有限公司 | A kind of high-performance warp resistance flame retardant type wind energy cable |
| CN109087748A (en) * | 2018-08-15 | 2018-12-25 | 金学庆 | A kind of fire-retardant fireproof power cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114937524A (en) * | 2022-06-27 | 2022-08-23 | 宁波新天用电线电缆实业有限公司 | High-flame-retardancy cable and preparation method thereof |
| CN114937524B (en) * | 2022-06-27 | 2024-01-23 | 宁波新天用电线电缆实业有限公司 | High-flame-retardance cable and preparation method thereof |
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Application publication date: 20190730 |
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