CN105957613A - Flame-retardant cable and preparation method therefor - Google Patents
Flame-retardant cable and preparation method therefor Download PDFInfo
- Publication number
- CN105957613A CN105957613A CN201610496821.8A CN201610496821A CN105957613A CN 105957613 A CN105957613 A CN 105957613A CN 201610496821 A CN201610496821 A CN 201610496821A CN 105957613 A CN105957613 A CN 105957613A
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- layer
- temperature
- insulated wire
- wire cores
- retardant cable
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Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 41
- 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 28
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 36
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 16
- 229920001903 high density polyethylene Polymers 0.000 claims description 16
- 239000004700 high-density polyethylene Substances 0.000 claims description 16
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 16
- 229920001568 phenolic resin Polymers 0.000 claims description 16
- 239000005011 phenolic resin Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000005662 Paraffin oil Substances 0.000 claims description 9
- 239000004014 plasticizer Substances 0.000 claims description 9
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- TVZISJTYELEYPI-UHFFFAOYSA-N hypodiphosphoric acid Chemical compound OP(O)(=O)P(O)(O)=O TVZISJTYELEYPI-UHFFFAOYSA-N 0.000 claims description 8
- 235000019359 magnesium stearate Nutrition 0.000 claims description 8
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 claims description 8
- 229950000845 politef Drugs 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 8
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 229910000410 antimony oxide Inorganic materials 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 6
- 239000000347 magnesium hydroxide Substances 0.000 claims description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 239000004945 silicone rubber Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000012745 toughening agent Substances 0.000 claims description 6
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 3
- 239000004088 foaming agent Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 14
- 230000002787 reinforcement Effects 0.000 abstract 4
- 239000012792 core layer Substances 0.000 abstract 2
- 238000004458 analytical method Methods 0.000 description 4
- 231100000614 poison Toxicity 0.000 description 4
- 230000007096 poisonous effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- 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
- 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
- H01B13/065—Insulating conductors with lacquers or enamels
-
- 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
- H01B13/14—Insulating conductors or cables by extrusion
-
- 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
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/148—Selection of the insulating material therefor
-
- 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
- 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
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
-
- 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
- H01B7/28—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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to the processing technical field of cables, and specifically to a flame-retardant cable. The flame-retardant cable comprises multiple insulating wire core groups, shielding layers, a reinforcement layer, a high-temperature-resistant layer and a protection layer, wherein each insulating wire core layer is formed by multiple insulating wire cores in a stranded manner; each insulating wire core comprises a conductor and a high-temperature insulating layer which coats the exterior of the corresponding conductor; each shielding layer is wound around the periphery of each insulating wire core layer; the peripheries of the shielding layers are packaged by the reinforcement layer; the high-temperature-resistant layer is arranged on the outer surface of the reinforcement layer; the outer surface of the reinforcement layer is coated with the protection layer; and each high-temperature insulating layer is an ethylene-tetrafluoroethylene copolymer layer. The invention also provides a preparation method for the flame-retardant cable. The prepared flame-retardant cable provided by the invention is simple to manufacture, convenient to operate, and relatively good in the fireproof and flame-retardant performance; and meanwhile, the cable is resistant to high temperature and bending, tensile, high in flexibility, and wearproof, and has a quite good protection effect on oxygen, high-energy radiation and harmful metal aging.
Description
Technical field
The present invention relates to cable processing technique field, be specifically related to a kind of flame retardant cable and preparation method thereof.
Background technology
At present, fast transfer of data, the needs of information, the dependence to computer, word processor, fax sensor and communication apparatus are increased by people the most rapidly.The appearance of new technique makes the equipment of this respect online and networking is possibly realized, and result in the comprehensive development of communication system.These systems increase, such as skyscraper, boats and ships, aircraft, train, drilling platforms and mine in the use of specific area.
The insulating barrier of existing flame retardant cable and restrictive coating are usually and single fire retardant mix with CABLE MATERIALS system
Become.Owing to fire proofing is single, cable the most not only can produce a large amount of smog and toxic gas, but also can reduce cable performance because of dehydration, thus affects resistance combustion temperature and the duration of fire resistance of cable, it is difficult to reaches fire prevention, moistureproof effect.
Owing to having formulated the strictest fire safety standard, cable insulation material needs to improve its burning and invention performance, keep excellent physical property simultaneously, to needing from the point of view of low expense wire cable insulating material compositions to improve the propagation of its flame and smoke generation characteristics, there is excellent physical property simultaneously.
Summary of the invention
It is an object of the invention to overcome the defect of above-mentioned prior art, it is provided that a kind of flame retardant cable and preparation method thereof, fire resistance is good, high temperature resistant, is simple to manufacture, easy to operate.
For this, the invention provides a kind of flame retardant cable, including insulated wire cores group, screen layer, enhancement layer, high-temperature-resistant layer and overcoat, insulated wire cores group has many groups, and often group is formed by many insulated wire cores are stranded, and every insulated wire cores is made up of conductor and the high-temperature insulating layer being coated on outside conductor, described screen layer is wound in insulated wire cores group periphery, enhanced layer packets is rolled in screen layer outer surface, and high-temperature-resistant layer is located at enhancement layer outer surface, and overcoat is coated on enhancement layer outer surface；Described high-temperature insulating layer is ethylene-tetrafluoroethylene copolymer layer；
The flame retardant cable that the present invention provides, not only has preferable fire retardant performance, and high temperature resistant, Stability Analysis of Structures, and resistance to tension is strong, not easy fracture, has good protective action to oxygen, high-energy radiation and poisonous metal are aging, and toughness is high, and preparation is simple, easy to operate.
Raw material components and the weight content of our used high-temperature-resistant layer are as follows: mica particles 5-10 part, polyvinyl chloride resin powder 50-60 part, polystyrene acid fat 30-35 part, silicone rubber 10-15 part, antioxidant 2-4 part, paraffin oil 5-8 part, glass fibre 10-15 part, toughener 5-8 part；
It addition, the raw material components of our used overcoat and weight portion content are as follows: phenolic resin 40-50 part, magnesium hydroxide 20-30 part, high density polyethylene (HDPE) 30-45 part, melamine cyanurate 2-4 part, aerosil 5-7 part, Ca/Zn complex stabilizer 5-7 part, magnesium stearate 2-3 part, cerous hypophosphate 5-10 part, halogen-free expansion fire retardant 10-15 part, antimony oxide 5-8 part, Firebrake ZB 2-3 part, politef 10-15 part, anti-wear agent 3-5 part, plasticizer 5-7 part.
The phenolic resin selected and high density polyethylene (HDPE), resistance to elevated temperatures is preferable, and especially phenolic resin, even if the most also can keep globality and the stability of its structure.Melamine cyanurate and aerosil, not only increase fire retardation, and make cable heat-resisting, and anti-bending strength is preferable.Ca/Zn complex stabilizer and magnesium stearate synergism strengthen the stability of overcoat, and anti-decomposition aoxidizes.Cerous hypophosphate maintains the stability of material, enhances the fire resistance property of material.Using halogen-free expansion fire retardant, fire resistance is higher.Politef has self-extinguishment, once ignition of cable, can stop flame spread.Anti-wear agent is molybdenum bisuphide, considerably increases the abrasion resistance of overcoat.The overcoat that above-mentioned material is made not only greatly strengthen fireproof flame-retardant effect, and protection coating materials Stability Analysis of Structures, the most oxidizable and wear-resisting, service life is long.
Further, described screen layer is the nonmetal screen layer being made up of polyolefin and Carbon Black Conductive Composite.This screen layer not only increases shielding properties, it is to avoid produces insulation breakdown phenomenon, and reduces the outside electromagnetic interference impact on electromagnetism.
Further, described enhancement layer is wrapped polyester belt.This enhancement layer makes cable have preferable ductility and a pliability, and stretching resistance by force, not easy fracture.
As preferably, described plasticizer is one or more mixture of technical white oil, naphthenic oil, paraffin oil.
We additionally provide a kind of method preparing above-mentioned flame retardant cable, in turn include the following steps:
(1) circular metal silk wire drawing and annealing is stranding into conductor respectively, by conductor first in insullac after dip-coating, then outside conductor, extrudes high-temperature insulating layer constitute insulated wire cores, the many mutual stranded composition covered wire sandwich layers of insulated wire cores；
(2) at covered wire sandwich layer periphery lapped shielding layer successively and enhancement layer；
null(3) exotic material is prepared: be first equipped with each component material according to quantity，The mica particles that will be equipped with、Polyvinyl chloride resin powder、Polystyrene acid fat、Silicone rubber、Antioxidant、Glass fibre and toughener add stirring 20-30 minute in blender，Spray paraffin oil by spray equipment simultaneously，After being sufficiently mixed uniformly，Add mixture into molding in twin screw extruder，And the goods of molding are carried out post bake，Heating and temperature control is at 115-150 DEG C，Time controlled between the 10-30 second，Obtain exotic material finished product，The drying baker inside holding that exotic material finished product is inserted 140-150 DEG C is dried 3-5 hour，In more dried exotic material finished product being inserted hot press compressing，The temperature of hot press is 280-320 DEG C，Pressure is 15-20Mpa，Thus obtain high-temperature-resistant layer；By prepared high-temperature-resistant layer around being wrapped in enhancement layer periphery；
(4) prepare protection coating materials: be first equipped with each component material according to quantity, phenolic resin is made the diameter phenolic resin particle less than 5mm by disintegrating machine；Phenolic resin particle and the magnesium hydroxide being equipped with, high density polyethylene (HDPE), melamine cyanurate, aerosil, magnesium stearate, cerous hypophosphate, antimony oxide, Firebrake ZB and politef are added blender stir 30-40 minute, send into after being sufficiently mixed in polymerization autoclave, deionized water is added in polymerization autoclave simultaneously, put into Ca/Zn complex stabilizer, anti-wear agent and plasticizer, it is warming up to 90-100 DEG C, keeps constant temperature in still；Adding halogen-free expansion fire retardant after 1-2 hour, be simultaneously introduced foaming agent, sealed reactor, be warming up to 100-110 DEG C and be incubated, obtain protection coating materials beadlet, the drying baker inside holding that the finished product obtained is inserted 100-120 DEG C is dried 2 hours；After being heated to dried protection coating materials beadlet melting, cooling i.e. prepares overcoat；By prepared overcoat around being wrapped in high-temperature-resistant layer periphery, thus obtain flame retardant cable.
Beneficial effects of the present invention: this flame retardant cable that the present invention provides, not only has preferable fire retardant performance, and high temperature resistant, tension, bending resistance, pliability is good, wear-resisting, having good protective action to oxygen, high-energy radiation and poisonous metal are aging, preparation is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation stopping cable that the present invention provides.
Description of reference numerals: 1, overcoat；2, high-temperature-resistant layer；3, enhancement layer；4, screen layer；5, insulated wire cores；5.1, conductor；5.2, high-temperature insulating layer.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with the present invention.
Embodiment 1:
A kind of flame retardant cable as shown in Figure 1, including insulated wire cores group, screen layer 4, enhancement layer 3, high-temperature-resistant layer 2 and overcoat 1, described insulated wire cores group has many groups, often group is formed by many insulated wire cores 5 are stranded, every insulated wire cores 5 is made up of conductor 5.1 and the high-temperature insulating layer 5.2 being coated on outside conductor 5.1, and described screen layer 4 is wound in insulated wire cores group periphery, and enhancement layer 3 is wrapped in screen layer 4 outer surface, high-temperature-resistant layer 2 is located at enhancement layer 3 outer surface, and overcoat 1 is coated on enhancement layer 3 outer surface；Described high-temperature insulating layer 5.2 is ethylene-tetrafluoroethylene copolymer layer；Described screen layer 4 is the nonmetal screen layer being made up of polyolefin and Carbon Black Conductive Composite.This screen layer 4 not only increases shielding properties, it is to avoid produces insulation breakdown phenomenon, and reduces the outside electromagnetic interference impact on electromagnetism.Described enhancement layer 3 is wrapped polyester belt.This enhancement layer 3 makes cable have preferable ductility and a pliability, and stretching resistance by force, not easy fracture.
The flame retardant cable that the present invention provides, not only has preferable fire retardant performance, and high temperature resistant, Stability Analysis of Structures, and resistance to tension is strong, not easy fracture, has good protective action to oxygen, high-energy radiation and poisonous metal are aging, and toughness is high, and preparation is simple, easy to operate.
Raw material components and the weight content of our used high-temperature-resistant layer are as follows: mica particles 5-10 part, polyvinyl chloride resin powder 50-60 part, polystyrene acid fat 30-35 part, silicone rubber 10-15 part, antioxidant 2-4 part, paraffin oil 5-8 part, glass fibre 10-15 part, toughener 5-8 part；
It addition, the raw material components of our used overcoat and weight portion content are as follows: phenolic resin 40-50 part, magnesium hydroxide 20-30 part, high density polyethylene (HDPE) 30-45 part, melamine cyanurate 2-4 part, aerosil 5-7 part, Ca/Zn complex stabilizer 5-7 part, magnesium stearate 2-3 part, cerous hypophosphate 5-10 part, halogen-free expansion fire retardant 10-15 part, antimony oxide 5-8 part, Firebrake ZB 2-3 part, politef 10-15 part, anti-wear agent 3-5 part, plasticizer 5-7 part.Described plasticizer is one or more mixture of technical white oil, naphthenic oil, paraffin oil.
The phenolic resin selected and high density polyethylene (HDPE), resistance to elevated temperatures is preferable, and especially phenolic resin, even if the most also can keep globality and the stability of its structure.Melamine cyanurate and aerosil, not only increase fire retardation, and make cable heat-resisting, and anti-bending strength is preferable.Ca/Zn complex stabilizer and magnesium stearate synergism strengthen the stability of overcoat, and anti-decomposition aoxidizes.Cerous hypophosphate maintains the stability of material, enhances the fire resistance property of material.Using halogen-free expansion fire retardant, fire resistance is higher.Politef has self-extinguishment, once ignition of cable, can stop flame spread.Anti-wear agent is molybdenum bisuphide, considerably increases the abrasion resistance of overcoat.The overcoat that above-mentioned material is made not only greatly strengthen fireproof flame-retardant effect, and protection coating materials Stability Analysis of Structures, the most oxidizable and wear-resisting, service life is long.
Embodiment 2:
On the basis of embodiment 1, we additionally provide a kind of preparation method preparing above-mentioned flame retardant cable, in turn include the following steps:
(1) circular metal silk wire drawing and annealing is stranding into conductor respectively, by conductor first in insullac after dip-coating, then outside conductor, extrudes high-temperature insulating layer constitute insulated wire cores, the many mutual stranded composition covered wire sandwich layers of insulated wire cores；
(2) at covered wire sandwich layer periphery lapped shielding layer successively and enhancement layer；
null(3) exotic material is prepared: be first equipped with each component material according to quantity，The mica particles that will be equipped with、Polyvinyl chloride resin powder、Polystyrene acid fat、Silicone rubber、Antioxidant、Glass fibre and toughener add stirring 20-30 minute in blender，Spray paraffin oil by spray equipment simultaneously，After being sufficiently mixed uniformly，Add mixture into molding in twin screw extruder，And the goods of molding are carried out post bake，Heating and temperature control is at 115-150 DEG C，Time controlled between the 10-30 second，Obtain exotic material finished product，The drying baker inside holding that exotic material finished product is inserted 140-150 DEG C is dried 3-5 hour，In more dried exotic material finished product being inserted hot press compressing，The temperature of hot press is 280-320 DEG C，Pressure is 15-20Mpa，Thus obtain high-temperature-resistant layer；By prepared high-temperature-resistant layer around being wrapped in enhancement layer periphery；
(4) prepare protection coating materials: be first equipped with each component material according to quantity, phenolic resin is made the diameter phenolic resin particle less than 5mm by disintegrating machine；Phenolic resin particle and the magnesium hydroxide being equipped with, high density polyethylene (HDPE), melamine cyanurate, aerosil, magnesium stearate, cerous hypophosphate, antimony oxide, Firebrake ZB and politef are added blender stir 30-40 minute, send into after being sufficiently mixed in polymerization autoclave, deionized water is added in polymerization autoclave simultaneously, put into Ca/Zn complex stabilizer, anti-wear agent and plasticizer, it is warming up to 90-100 DEG C, keeps constant temperature in still；Adding halogen-free expansion fire retardant after 1-2 hour, be simultaneously introduced foaming agent, sealed reactor, be warming up to 100-110 DEG C and be incubated, obtain protection coating materials beadlet, the drying baker inside holding that the finished product obtained is inserted 100-120 DEG C is dried 2 hours；After being heated to dried protection coating materials beadlet melting, cooling i.e. prepares overcoat；By prepared overcoat around being wrapped in high-temperature-resistant layer periphery, thus obtain flame retardant cable.
This flame retardant cable that the present invention provides, not only has preferable fire retardant performance, and high temperature resistant, tension, bending resistance, and pliability is good, wear-resisting, has good protective action to oxygen, high-energy radiation and poisonous metal are aging, and preparation is simple, easy to operate.
Exemplified as above is only the illustration to the present invention, is not intended that the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention belongs to protection scope of the present invention.
Claims (5)
1. a flame retardant cable, it is characterized in that, including insulated wire cores group, screen layer, enhancement layer, high-temperature-resistant layer and overcoat, insulated wire cores group has many groups, and often group is formed by many insulated wire cores are stranded, and every insulated wire cores is made up of conductor and the high-temperature insulating layer being coated on outside conductor, described screen layer is wound in insulated wire cores group periphery, enhanced layer packets is rolled in screen layer outer surface, and high-temperature-resistant layer is located at enhancement layer outer surface, and overcoat is coated on enhancement layer outer surface；Described high-temperature insulating layer is ethylene-tetrafluoroethylene copolymer layer；
Raw material components and the weight content of described high-temperature-resistant layer are as follows: mica particles 5-10 part, polyvinyl chloride resin powder 50-60 part, polystyrene acid fat 30-35 part, silicone rubber 10-15 part, antioxidant 2-4 part, paraffin oil 5-8 part, glass fibre 10-15 part, toughener 5-8 part；
Raw material components and the weight portion content of described overcoat are as follows: phenolic resin 40-50 part, magnesium hydroxide 20-30 part, high density polyethylene (HDPE) 30-45 part, melamine cyanurate 2-4 part, aerosil 5-7 part, Ca/Zn complex stabilizer 5-7 part, magnesium stearate 2-3 part, cerous hypophosphate 5-10 part, halogen-free expansion fire retardant 10-15 part, antimony oxide 5-8 part, Firebrake ZB 2-3 part, politef 10-15 part, anti-wear agent 3-5 part, plasticizer 5-7 part.
2. a kind of flame retardant cable as claimed in claim 1, it is characterised in that described screen layer is the nonmetal screen layer being made up of polyolefin and Carbon Black Conductive Composite.
3. a kind of flame retardant cable as claimed in claim 1, it is characterised in that described enhancement layer is wrapped polyester belt.
4. a kind of flame retardant cable as claimed in claim 1, it is characterised in that described plasticizer is one or more mixture of technical white oil, naphthenic oil, paraffin oil.
5. prepare the method for flame retardant cable described in claim 1-4 any one for one kind, it is characterized in that, in turn include the following steps: circular metal silk wire drawing and annealing is stranding into conductor by (1) respectively, by conductor first in insullac after dip-coating, outside conductor, extrude high-temperature insulating layer again constitute insulated wire cores, the many mutual stranded composition insulated wire cores groups of insulated wire cores；
(2) at each insulated wire cores group outer surface lapped shielding layer, then it is coated with enhancement layer at screen layer outer surface；
null(3) exotic material is prepared: be first equipped with each component material according to quantity，The mica particles that will be equipped with、Polyvinyl chloride resin powder、Polystyrene acid fat、Silicone rubber、Antioxidant、Glass fibre and toughener add stirring 20-30 minute in blender，Spray paraffin oil by spray equipment simultaneously，After being sufficiently mixed uniformly，Add mixture into molding in twin screw extruder，And the goods of molding are carried out post bake，Heating and temperature control is at 115-150 DEG C，Time controlled between the 10-30 second，Obtain exotic material finished product，The drying baker inside holding that exotic material finished product is inserted 140-150 DEG C is dried 3-5 hour，In more dried exotic material finished product being inserted hot press compressing，The temperature of hot press is 280-320 DEG C，Pressure is 15-20Mpa，Thus obtain high-temperature-resistant layer；By prepared high-temperature-resistant layer around being wrapped in enhancement layer periphery；
(4) prepare protection coating materials: be first equipped with each component material according to quantity, phenolic resin is made the diameter phenolic resin particle less than 5mm by disintegrating machine；Phenolic resin particle and the magnesium hydroxide being equipped with, high density polyethylene (HDPE), melamine cyanurate, aerosil, magnesium stearate, cerous hypophosphate, antimony oxide, Firebrake ZB and politef are added blender stir 30-40 minute, send into after being sufficiently mixed in polymerization autoclave, deionized water is added in polymerization autoclave simultaneously, put into Ca/Zn complex stabilizer, anti-wear agent and plasticizer, it is warming up to 90-100 DEG C, keeps constant temperature in still；Adding halogen-free expansion fire retardant after 1-2 hour, be simultaneously introduced foaming agent, sealed reactor, be warming up to 100-110 DEG C and be incubated, obtain protection coating materials beadlet, the drying baker inside holding that the finished product obtained is inserted 100-120 DEG C is dried 2 hours；After being heated to dried protection coating materials beadlet melting, cooling i.e. prepares overcoat；By prepared overcoat around being wrapped in high-temperature-resistant layer periphery, thus obtain flame retardant cable.
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| CN108806892B (en) * | 2018-07-28 | 2019-08-27 | 重庆永富电线电缆有限公司 | The manufacturing process of copper core polyvinyl chloride insulation flame retardant cable |
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