CN106205795A - A kind of flame-proof heat-resistant polyphosphazene insulated cable - Google Patents
A kind of flame-proof heat-resistant polyphosphazene insulated cable Download PDFInfo
- Publication number
- CN106205795A CN106205795A CN201610516971.0A CN201610516971A CN106205795A CN 106205795 A CN106205795 A CN 106205795A CN 201610516971 A CN201610516971 A CN 201610516971A CN 106205795 A CN106205795 A CN 106205795A
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- CN
- China
- Prior art keywords
- flame
- proof heat
- resistant
- polyphosphazene
- metal shell
- 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.)
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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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing 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
-
- 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
-
- 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
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
The present invention relates to a kind of flame-proof heat-resistant polyphosphazene insulated cable, protective metal shell including the conductor and outer layer being positioned at cable center, conductor is formed with upper conductor by two strands, and the outer layer of wire is all enclosed with flame-proof heat-resistant insulating barrier, the appearance parcel flame-proof heat-resistant insulating barrier of protective metal shell；Flame-proof heat-resistant insulating barrier uses polyphosphazene insulating cement to make, and is provided with packed layer between protective metal shell and conductor, and packed layer uses magnesium hydroxide to make.Technique scheme difference prior art; protective metal shell appearance parcel flame-proof heat-resistant insulating barrier; the outer layer of wire is all enclosed with flame-proof heat-resistant insulating barrier; packed layer uses magnesium hydroxide; the advantage that polyphosphazene insulating cement itself has the electrical insulation properties of excellence, thermostability is high, fire resistance is good, and define double shielding；Magnesium hydroxide burning produce water cooperate with flame-proof heat-resistant insulating barrier carry out fire-retardant, improve cable-flame retardant performance, reinforcement environmental protection.
Description
Technical field
The present invention relates to field of power transmission, particularly to a kind of flame-proof heat-resistant polyphosphazene insulated cable.
Background technology
Along with development and the raising of electrical equipment and electrical technology of electric cause, high-power electrical, electronic product contour
The extensive application of the sci-tech product of performance, a kind of can meet cable and use the cable compound requiring simultaneously have flame-proof heat-resistant
Seem particularly important.Along with development and the progress of society of science and technology, because the cable of polrvinyl chloride and halogen containing flame-retardant is in burning
Time producible smog harmful, cause so many people in fire to be choked to death, precision equipment paralyse, Halogen CABLE MATERIALS will
Gradually it is eliminated.Thus design and prepare harmless to humans, environmental protection, possess again fire resistance and the insulating properties of excellence simultaneously
Cable significant.
It addition, in city, power cable is mainly layed in underground, when running into the natural disaster such as flood, earthquake,
Power system often can be destroyed, and power cable the most often there will be the faults such as broken string.And existing power cable fault is got rid of and is needed
Carrying out in buried cable passage to be manually entered, or drawn by cable on earth's surface and investigate, the efficiency of investigation is low, the amount of labour
Greatly, and be difficult to find the particular location of broken string.
Summary of the invention
For this reason, it may be necessary to provide a kind of flame-proof heat-resistant polyphosphazene insulated cable, it is used for solving when existing cable burns human body
Harm is big, the technical problem of fire resistance difference.
For achieving the above object, inventor provide a kind of flame-proof heat-resistant polyphosphazene insulated cable,
Including the protective metal shell of the conductor and outer layer being positioned at cable center, described conductor is formed with upper conductor by two strands, leads
The outer layer of line is all enclosed with flame-proof heat-resistant insulating barrier, the appearance parcel flame-proof heat-resistant insulating barrier of described protective metal shell；
Described flame-proof heat-resistant insulating barrier uses polyphosphazene insulating cement to make, and is provided with filling between described protective metal shell and conductor
Layer, described packed layer uses magnesium hydroxide to make.
As also having two test leads, described two tests in a kind of preferred structure of the present invention, described protective metal shell
It is parallel with a resistance every a preset length between wire.
As a kind of preferred structure of the present invention, described two test leads are arranged on conductor by spiral winding.
As a kind of preferred structure of the present invention, described preset length is 5～10 meters.
As a kind of preferred structure of the present invention, the resistance of described resistance is 30～50M ohms.
As a kind of preferred structure of the present invention, described protective metal shell is metallic copper sheath or the rustless steel of embossing of embossing
Sheath, described copper sheath thickness is 0.4～0.8mm, and described stainless steel sheath thickness is 0.25～0.4mm.
Being different from prior art, technique scheme has the advantage that
1, protective metal shell appearance parcel flame-proof heat-resistant insulating barrier, the outer layer of wire is all enclosed with flame-proof heat-resistant insulating barrier, fills out
Filling layer and use magnesium hydroxide, polyphosphazene insulating cement itself has the electrical insulation properties of excellence, thermostability is high, fire resistance is good
Advantage, and define double shielding；The melting point metal of protective metal shell is high, plays useful flameproof effect；Magnesium hydroxide burns
Produce water cooperate with flame-proof heat-resistant insulating barrier carry out fire-retardant.
2, a resistance it is parallel with at spacing intervals between two test leads, when cable generation disconnection fault, described
Test lead also can rupture, and can calculate the particular location of broken string according to the resistance value between two test leads, substantially increase
The efficiency of cable break investigation.
3, two test leads are arranged on conductor by spiral winding, it is to avoid cable is that the situation of portion fractures goes out
Existing, it is greatly reduced two malfunctioning probability of test lead, as long as cable is the most permissible if somewhat having which section fracture on conductor
Detect.
Accompanying drawing explanation
Fig. 1 is the generalized section of flame-proof heat-resistant polyphosphazene insulated cable described in specific embodiment；
Fig. 2 is the conductor graphics of flame-proof heat-resistant polyphosphazene insulated cable described in specific embodiment；
Fig. 3 is the circuit connection diagram of test lead described in detailed description of the invention and resistance.
Description of reference numerals:
10, conductor；
11, copper covered steel wire；
20, protective metal shell；
30, flame-proof heat-resistant insulating barrier；
40, packed layer；
50, test lead；
51, resistance.
Detailed description of the invention
By describing the technology contents of technical scheme, structural feature in detail, being realized purpose and effect, below in conjunction with concrete real
Execute example and coordinate accompanying drawing to be explained in detail.
Referring to Fig. 1, the present embodiment one flame-proof heat-resistant polyphosphazene insulated cable, including the conductor 10 being positioned at cable center
With the protective metal shell 20 of outer layer, the conductor in the present embodiment is formed by three strands of copper covered steel wires 11 are the most twisted, per share copper covered steel
Wire 11 is all enclosed with flame-proof heat-resistant insulating barrier 30, and flame-proof heat-resistant insulating barrier 30 uses polyphosphazene insulating cement to make, and polyphosphazene is exhausted
Edge glue is that Synthesis, Characterization of Polyphosphazenes is made；
The chemical structural formula of Synthesis, Characterization of Polyphosphazenes is:
Substituent R 1 in the chemical structural formula of Synthesis, Characterization of Polyphosphazenes is difluorophenol, trifloro methyl phenol, trifluoro methoxy
Base phenol, five fluorine thanatols, carborane bis-phenol list hexyl ether, carborane bis-phenol list Octyl Ether, carborane bis-phenol list decyl
Ether, any one or the combination of any two kinds of carborane bis-phenol monododecyl ether；
Substituent R 2 in the chemical structural formula of Synthesis, Characterization of Polyphosphazenes is carborane bis-phenol list hexyl ether, carborane bis-phenol list
Octyl Ether, carborane bis-phenol list decyl ethers, carborane bis-phenol monododecyl ether any one.
The concrete preparation method of polyphosphazene insulating cement, comprises the following steps::
S1, taking the polychloride phosphonitrile of 58g, add in 400mL tetrahydrofuran solution, stirring to polychloride phosphonitrile is completely dissolved,
Obtain polychloride phosphonitrile tetrahydrofuran solution, standby；
S2, taking 130.1g 2,6-difluorophenol is dissolved in 150mL tetrahydrofuran solution, is slowly added to 40g by agitator
Sodium hydroxide, is adjusted to 40 DEG C of constant temperature by the temperature of solution, and within 1 hour, to 2, it is two that 6-difluorophenol reacts completely under agitation reaction
Till fluorine phenol epoxide sodium, obtain intermediate product solution (I), standby；
S3, take the 1000mL there-necked flask being provided with agitator, condensing tube and constant pressure funnel, add the 1,7-of 33.2g
Two (4-hydroxy phenyl)-carborane, is slowly added to 4g sodium hydroxide by agitator, add 150mL tetrahydrofuran solution and
21.2g bromooctane is in there-necked flask, and toward nitrogen logical in reaction solution, at 65 DEG C after stirring reaction 2 hours, by temperature
It is down to 50 DEG C, obtains reacted there-necked flask；
S4, respectively by the polychloride phosphonitrile tetrahydrofuran solution obtained in step S1 and step S2 and intermediate product solution
(I), slowly instilled in the reacted there-necked flask of step S3 by constant pressure funnel and react, obtain reactant liquor；
S5, reactant liquor is poured in the beaker filling tap water and be stirred, after stirring 10min, obtain solution condenses
Rubbery solid, rubbery solid and the solution of cohesion are separated, after separation by tetrahydrofuran solution to rubber-like
Solid dissolves, then is poured into by solution in the beaker filling tap water and repeat this step, until washing away in rubbery solid
Salinity, the rubbery solid finally given is difluoro phenol epoxide list Octyl Ether carborane bis-phenol epoxide polyphosphazene.Difluoro phenol epoxide
Single Octyl Ether carborane bis-phenol epoxide polyphosphazene is the one of polyphosphazene insulating cement.
The main chain of the Synthesis, Characterization of Polyphosphazenes in polyphosphazene insulating cement is elementary composition by phosphorus, nitrogen, side base by fluorine-containing phenol epoxide and
Carborane bis-phenol monoalky lether forms.Carborane alternatively base introduces in polyphosphazene side chain, does not destroy the caged knot of carborane
The Synthesis, Characterization of Polyphosphazenes of structure synthesis side chain band carborane structure.Described Synthesis, Characterization of Polyphosphazenes is that one has flame-proof heat-resistant insulator
Material, is the ideal material of a kind of electric insulation occasion exigent to combustion safety.Meanwhile, the polyphosphazene in the present embodiment
Insulating cement is a kind of non-halogenated, insulating cement of flame resistant, low smoke and heat insulation foam glue.This insulating cement heat conductivity is good, heat-resisting
Property high, preparation method is simple, has the electrical cable insulating properties of excellence, and application is wide.
Being added in extruder by polyphosphazene insulating cement, be coated on copper covered steel wire 11 by extrusion, crosslinking with radiation i.e., obtains
Wire to flame-proof heat-resistant.
As shown in Figures 2 and 3, three strands of concentric twisted composition conductors 10 of copper covered steel wire 11, it is more than being limited to three strands of copper
Baogang's wire 11, can be that other wire 11 coilings by other means of more than two strands are the most permissible, spiral winding on conductor
It is provided with two test leads 50, between two test leads 50, is parallel with a resistance 51, preset length every a preset length
Being 5～10 meters, the resistance of resistance 51 is 30～50M ohms.And in other embodiments, the resistance of described resistance 51 can also
For other values, the number of described copper covered steel wire 11 can be 1, two or more than 4.Due in city, underground electrical network
Passway between distance more than 10 meters, the spacing between resistance 51 is set to 5～10 meters and can ensure that each passway
Between cable between all can have at least one resistance 51, make the judgement precision of break point within 10 meters, it is simple to trouble point is true
Fixed.
Broken string particular location when test lead 50 is for judging cable fault uses.Due to two test leads 50
Between equally spaced be parallel with multiple resistance, the resistance of each resistance is identical, therefore the resistance value between two test leads 50 with
Resistance number in parallel is correlated with, when cable complete nothing broken string, and the value that resistance the is all resistor coupled in parallel (reason between two test electric wires
Close to zero on Lun), and when cable break (test lead the most together breaks), now the resistance between two test leads is for surveying
Pilot is to the resistance of resistance in parallel between break point, therefore, according to the electricity between measured two test leads 50 obtained
Resistance and the resistance of each resistance and spacing can calculate break point away from the distance measuring point.The present embodiment can be by one end
The resistance value measuring test electric wire determines break point, it is not necessary to is manually entered in buried cable passage and carries out break point investigation, or
Cable is drawn on earth's surface and investigate, be greatly improved the efficiency of cable break investigation.
In the present embodiment, being provided with packed layer 40 between protective metal shell 20 and conductor 10, packed layer 40 is made up of magnesium hydroxide,
Adding the substantial amounts of magnesium hydroxide filler of people in the most halogen-containing polyphosphazene insulating cement, they discharge crystallization when cable fire
Water, absorbs amount of heat, thus suppresses polyphosphazene insulating cement temperature to rise, and delays thermal decomposition, reduces burning velocity.It addition, it is de-
The water vapour that water decomposition produces, can dilute imflammable gas, produces flame retardant effect.The anti-flammability of polyphosphazene insulating cement, generally uses
Oxygen index method is evaluated, and it represents the minimum oxygen content that sample is required when burning in the mixture of oxygen and nitrogen, index
The biggest, represent that combustibility is the least, anti-flammability is the best.General oxygen index (OI) (OI) at least 28 just has and does not fire characteristic.
In an embodiment, protective metal shell 20 is metallic copper sheath or the stainless steel sheath of embossing of embossing, described copper sheath
Thickness is 0.4～0.8mm, and described stainless steel sheath thickness is 0.25～0.4mm.Protective metal shell 20 uses metallic copper sheath, enters
One step ensures the insulating properties between conductor 10 and copper sheath, and cable profile roundness meets regulation requirement, then uses T2 soft
The vertical bag of copper strips, welding, form copper sheath, and copper sheath carried out embossing process, for ensureing fire protecting performance and the line of copper sheath
The flexibility of cable, copper sheath THICKNESS CONTROL is at 0.4mm.Or protective metal shell 20 uses the stainless steel sheath of embossing, form rustless steel
Sheath, and stainless steel sheath 5 is carried out embossing process, for ensureing cable fire-proof performance and flexibility, stainless steel sheath THICKNESS CONTROL
At 0.25mm.
In the present embodiment, the appearance parcel flame-proof heat-resistant insulating barrier 30 of protective metal shell 20, on the one hand high due to melting point metal,
Playing useful flameproof effect, on the other hand, protective metal shell 20 prevents outside aqueous vapor exhausted to flame-proof heat-resistant the most to a certain extent
The impact of edge layer 30, protective metal shell 20 outsourcing flame-proof heat-resistant insulating barrier 30, can prevent again metal from being corroded by the external world, play protection and make
With.Flame-proof heat-resistant insulating barrier 30 is made up of polyphosphazene insulating cement equally, is added by polyphosphazene insulating cement in extruder, by extrusion
Being coated on protective metal shell 20, crosslinking with radiation i.e., obtains the cable of flame-proof heat-resistant.
The present embodiment, uses double shielding, protective metal shell 20 last layer flame-proof heat-resistant insulating barrier 30, and each wire last layer hinders
Combustion heat-resistant insulating layer 30, flame-proof heat-resistant insulating barrier 30 is polyphosphazene insulating cement and makes, and polyphosphazene insulating cement itself has excellence
Electrical insulation properties, thermostability is high, fire resistance is good advantage, and define double shielding, cable protected comprehensively
Protect.Packed layer use magnesium hydroxide, magnesium hydroxide burning produce water cooperate with flame-proof heat-resistant insulating barrier 30 carry out fire-retardant.
Conductor 10 is provided with two test leads 50, is parallel with a resistance 51 at spacing intervals, works as electricity between two test leads 50
During cable generation disconnection fault, described test lead 50 also can rupture, and can calculate according to the resistance value between two test leads 50
The particular location of broken string, substantially increases the efficiency of cable break investigation.Article two, test lead 50 is arranged on by spiral winding
On conductor 10, it is to avoid cable is that the situation of portion fractures occurs, is greatly reduced two malfunctioning probability of test lead 50, cable
As long as just can detect if having which section fracture the most on the conductor 10.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or terminal unit not only include those
Key element, but also include other key elements being not expressly set out, or also include for this process, method, article or end
The key element that end equipment is intrinsic.In the case of there is no more restriction, statement " including ... " or " comprising ... " limit
Key element, it is not excluded that there is also other key element in including the process of described key element, method, article or terminal unit.This
Outward, in this article, " be more than ", " being less than ", " exceeding " etc. are interpreted as not including this number；More than " ", " below ", " within " etc. understand
For including this number.
Although being described the various embodiments described above, but those skilled in the art once know basic wound
The property made concept, then can make other change and amendment to these embodiments, so the foregoing is only embodiments of the invention,
Not thereby the scope of patent protection of the present invention, every equivalent structure utilizing description of the invention and accompanying drawing content to be made are limited
Or equivalence flow process conversion, or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the patent of the present invention
Within protection domain.
Claims (6)
1. a flame-proof heat-resistant polyphosphazene insulated cable, it is characterised in that:
Including the protective metal shell of the conductor and outer layer being positioned at cable center, described conductor is formed with upper conductor by two strands, wire
Outer layer is all enclosed with flame-proof heat-resistant insulating barrier, the appearance parcel flame-proof heat-resistant insulating barrier of described protective metal shell；
Described flame-proof heat-resistant insulating barrier uses polyphosphazene insulating cement to make, and is provided with packed layer between described protective metal shell and conductor,
Described packed layer uses magnesium hydroxide to make.
Flame-proof heat-resistant polyphosphazene insulated cable the most according to claim 1, it is characterised in that: also have in described protective metal shell
Article two, test lead, is parallel with a resistance every a preset length between described two test leads.
Flame-proof heat-resistant polyphosphazene insulated cable the most according to claim 2, it is characterised in that: described two test leads lead to
Cross spiral winding to be arranged on conductor.
4. according to the flame-proof heat-resistant polyphosphazene insulated cable described in Claims 2 or 3, it is characterised in that: described preset length is 5
～10 meters.
5. according to the flame-proof heat-resistant polyphosphazene insulated cable described in Claims 2 or 3, it is characterised in that: the resistance of described resistance
It is 30～50M ohms.
Flame-proof heat-resistant polyphosphazene insulated cable the most according to claim 1, it is characterised in that: described protective metal shell is embossing
Metallic copper sheath or the stainless steel sheath of embossing, described copper sheath thickness is 0.4～0.8mm, described stainless steel sheath thickness
It is 0.25～0.4mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610516971.0A CN106205795A (en) | 2016-07-04 | 2016-07-04 | A kind of flame-proof heat-resistant polyphosphazene insulated cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610516971.0A CN106205795A (en) | 2016-07-04 | 2016-07-04 | A kind of flame-proof heat-resistant polyphosphazene insulated cable |
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| Publication Number | Publication Date |
|---|---|
| CN106205795A true CN106205795A (en) | 2016-12-07 |
Family
ID=57465904
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| CN201610516971.0A Pending CN106205795A (en) | 2016-07-04 | 2016-07-04 | A kind of flame-proof heat-resistant polyphosphazene insulated cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107274996A (en) * | 2017-06-19 | 2017-10-20 | 乐山市同源科技有限公司 | A kind of flame-proof heat-resistant cable |
| CN110111926A (en) * | 2019-04-03 | 2019-08-09 | 深圳市奔达康电缆股份有限公司 | A kind of fireproof cable with automatic cooling mineral refuge floor |
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| CN102660071A (en) * | 2012-04-18 | 2012-09-12 | 同济大学 | Polyphosphazene-containing halogen-free eco-friendly flame-retardant polyolefin cable material and preparation method thereof |
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