CN107564606A - A kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable - Google Patents

A kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable Download PDF

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Publication number
CN107564606A
CN107564606A CN201710727749.XA CN201710727749A CN107564606A CN 107564606 A CN107564606 A CN 107564606A CN 201710727749 A CN201710727749 A CN 201710727749A CN 107564606 A CN107564606 A CN 107564606A
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layer
retardant
cable
copper core
core
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芮黎春
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Jiangsu Polytron Technologies Inc
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Jiangsu Polytron Technologies Inc
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Abstract

The invention discloses a kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable; including cable core; cable core is twisted by multigroup core; waterproof membrane, flame-retardant layer, oxygen barrier layer and oversheath are sequentially provided with outside multigroup core after twisted; every group of core is made up of one conductor and the insulating barrier being packaged in successively outside conductor, screen layer, fireprotection layer and insulating protective layer; per share conductor is formed by six single copper core conductor strands, and filler is filled between the multigroup core and waterproof membrane after being twisted;Twining package tape and inner sheath are additionally provided with outside insulating protective layer; thermal insulation layer is also set up between twining package tape and inner sheath; mould proof drier is also filled between oxygen barrier layer and oversheath; oversheath is annular hollow structure; the madial wall of oversheath is the metallic plate of mesh; the lateral wall of oversheath is the metal sleeve of closing, and square through hole is uniformly provided with metal sleeve;The construction of cable of the invention is simple, has good flexibility, anti-flammability, increases the service life.

Description

A kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable
Technical field
The present invention relates to a kind of cable, and in particular to a kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable.
Background technology
Mineral insulated cable(Mineral Insulated Cable)Abbreviation MI cables, can be divided by architectural characteristic at present For two kinds of rigidity and flexibility, rigid mineral insulated cable is that 19 end of the century Switzerland engineer Arnold Francois Borel are carried The imagination gone out, and be have developed rapidly in patented power in 1896,1934-1936 methods, English after putting into production, China is also in upper The sixties in century develop, and start to be used for military field, the mid-80 starts industrialized production, and progressively complete by building field Face receives, and the invention of mineral insulating flexible fireproof cable is about to be born in Switzerland's Si Tute cables in eighties of last century the seventies Company, because rigid mineral insulated cable is in terms of reliability, production and laying the defects of, copper core aluminium sheath inorganic insulation is flexible Fireproof cable is significantly improved and lifted than rigidity in terms of production, laying, copper core aluminium sheath inorganic insulation fire resistant flexible electricity Cable turns into the main flow cable product of fire protection field;
The structure of copper core aluminium sheath inorganic insulation flexible fire-retardant cable is all to use to mineralize using flexible structure and insulating materials Compound, compensate for structure hard, easy firing, it is poisonous the defects of, it also there are some other cables can not possibly have the advantage that, Such as:Fire resisting, current-carrying capacity are big, the damage of impact resistance voltage, mechanical resistant, Halogen are nontoxic, explosion-proof, waterproof, corrosion-resistant, long lifespan, safety, The features such as resistant to overload, high temperature resistant, low cost, the process structure of copper core aluminium sheath inorganic insulation flexible fire-retardant cable (BTLY) product It is identical with traditional cable, successfully solve what the production technology of magnesia copper bar mineral insulated cable (BTTZ) was determined The numerous weak points of product, BTLY appearance, turn into a milestone in fireproof cable development history, while also accelerate China The horizontal process in line with international standards of the technical research of cable.
The sectional area single of copper core aluminium sheath inorganic insulation flexible fire-retardant cable (BTLY) is 1.5mm2To 500mm2, multicore For 1.5mm2-300mm2, in fireproof cable field, the cost of investment of investing unit is reduced to greatest extent, improves building Fire safety performance rate, such cable is at home still in studying and improving the stage, at present, only a small number of enterprises' trial-production lifes Production, early stage, market competition was relatively small, so the product is developed, to improve the manufacturing of special cables product level Meanwhile good economic benefit is also brought, in order to adapt to national economic development, enterprise is had more in the market competition of fierceness Competitiveness, research and development just develop towards high technology content, safe environment protection type, multi items, multi-series, multipurpose direction, base In the growth requirement of domestic market particularly mineral insulated cable, in order to further open up and occupy market, increase economic efficiency, Meet that user requires, flexibility of research and development mineral insulation high flame resistant cable, this cable, which removes, meets JB/T 313-2011 prescribed by standard Can be outer, also with fire resisting function, can still keep circuit normal operation within a certain period of time under fired state, be personnel escape, Process accident tries to gain time precious to one, therefore has extraordinary social benefit and economic benefit.
The content of the invention
The technical problems to be solved by the invention are the shortcomings that overcoming prior art, there is provided a kind of copper core aluminium sheath is inorganic Insulation flexible fireproof cable, the construction of cable is simple, has good flexibility, anti-flammability, increases the service life.
In order to solve the above technical problems, the present invention provides a kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable, bag Cable core is included, cable core is twisted by multigroup core, and waterproof membrane, flame-retardant layer, oxygen barrier layer are sequentially provided with outside multigroup core after being twisted And oversheath, every group of core is by one conductor and the insulating barrier being packaged in successively outside conductor, screen layer, fireprotection layer and insulation protection Layer composition, wherein:
Per share conductor is formed by six single copper core conductor strands, and it is per share in six single copper core conductors with wherein one It is individual lead copper core body centered on remaining five copper core conductor be distributed on its circumferencial direction;
Filler is filled between multigroup core and waterproof membrane after twisted;
Twining package tape and inner sheath are additionally provided with outside insulating protective layer, twining package tape is wound in outside insulating protective layer, and inner sheath is arranged at Outside twining package tape, thermal insulation layer is also set up between twining package tape and inner sheath, twining package tape is by the first twining package tape and the second lapping layer overlapping group Into the first twining package tape is alkali-free glass wool twining package tape, and the second twining package tape is Mica tape;
It is also filled with mould proof drier between oxygen barrier layer and oversheath, oversheath is annular hollow structure, the inner side of oversheath Wall is the metallic plate of mesh, mesh aperture 1-2mm, the lateral wall of oversheath for closing metal sleeve, on metal sleeve It is even to be provided with square through hole.
The technical scheme that further limits of the present invention is:
Further, foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, inner sheath are aluminium sheath.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, oxygen barrier layer are made by the way of fire-proof mud is extruded;It is anti- Fire bed uses acrylic fibers cotton fiber flameproof fabric.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, cable core are made up of four groups of cores.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, insulating protective layer are aramid fiber layer, and thermal insulation layer is nothing Halogen silicon porcelain cement, screen layer are that tinned copper wire weaves split-phase screen layer.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, insulating barrier are silica and kaolinic mixture Layer, counts silica in mass ratio:Kaolin=3:1.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, filler are alkali-free glass wool.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, fire-retardant layer material include with the following group according to the mass fraction Point:
Methyl vinyl silicone rubber:15-30 parts, acrylic emulsion:10-12 parts, ethylene-ethyl acrylate copolymer:10-13 Part, mica:1-5 parts, aminomethyl phenyl diethoxy silane:7-10 parts, modified magnesium hydroxide:5-8 parts, composite flame-retardant agent:5-7 Part, the silazane of pregnancy basic ring three:2-5 parts, glass flake:1-3 parts, PERFORMANCE OF MODIFIED VERMICULITE powder:1-3 parts, silicone oil:4-7 parts, filler: 0.5-1 parts;
Filler includes following component by mass percentage: Y:3-5%, La:6-8%, Pr:5-8%, calcium carbonate:11-13%, mica: 13-15%, glass dust:15-18%, surplus are talcum powder, and above each component sum is 100%, wherein:
Modified magnesium hydroxide is produced as follows:Silane coupler is added in deionized water, stirring 10-15min makes its abundant Hydrolysis, ultrasonic 10-15min is reloaded into watering can in ultrasonic disperse instrument, and magnesium hydroxide powder is added in high-speed mixer, is used The solution of hydrolysis is sprayed on magnesium hydroxide powder surface, then mixed at high speed 15-20min by watering can, and taking out drying can be modified Magnesium hydroxide;
Composite flame-retardant agent is mixed by phosphorus nitrogen silicon ternary flame retardant and Firebrake ZB, is prepared as follows:
To equipped with condenser pipe, dropping funel three-necked flask in be passed through nitrogen 5-10min, sequentially add phosphoric acid and ethanol, by γ- (2,3- glycidoxies)Propyl group front three oxosilane is added dropwise, and rate of addition is controlled in 3-5g/min, reacts 3- at room temperature 4h;After reaction terminates, three-necked flask is placed in thermostat water bath, is evaporated under reduced pressure with rotary evaporator and removes solvent and low boiling Thing, that is, phosphorus silicon binary fire retardant is obtained, wherein whole course of reaction keeps continuous mechanical agitation, mixing speed 300-400r/ Min, phosphorus silicon binary fire retardant and urea are added in a reservoir, at room temperature continuous mechanical agitation 5-10min, obtain the resistance of phosphorus nitrogen silicon ternary Fire agent;
Firebrake ZB is well mixed with the phosphorus nitrogen silicon ternary flame retardant prepared, finally gives composite flame-retardant agent.
Foregoing copper core aluminium sheath inorganic insulation flexible fire-retardant cable, preparing for flame-retardant layer are as follows:
A. acrylic emulsion, ethylene-ethyl acrylate copolymer, silicone oil, methyl vinyl silicone rubber will be gone to add in dispersion cylinder, Stirring at low speed 5-10min, mixing speed 50-60r/min;
B. to(a)Aminomethyl phenyl diethoxy silane, modified magnesium hydroxide, mica, the silazane of pregnancy basic ring three are added in step, Pre-dispersed 10-15min;
C. will(b)Mixture in step is transferred in vertical skin grinder, and 50-100min is sanded at a high speed under high shear, Control the μ of fineness < 50 of mixture;
D. again by step(c)In mixture be transferred in dispersion tank, add composite flame-retardant agent and glass flake, PERFORMANCE OF MODIFIED VERMICULITE powder And filler is sufficiently mixed, discharges after disperseing 15-25min with 650-750r/min rotating speed, then spray material, band solidification is dry Flame-retardant layer is obtained after dry.
The beneficial effects of the invention are as follows:
The setting of flame-retardant layer in the application, ensureing to prevent flame outside when unit cable catches fire so that electric power continues to, Effectively extend power-on time, taken measures to save the time.
Combined type twining package tape is used in the present invention, the material of each twining package tape is different, is to ensure the fireproofing of cable Anti-flammability, corrosion-resistant, the mechanical performance such as flexibility, not using the twining package tape of consistent material, but two kinds of different materials are favourable In the performance for improving cable each side, extend its service life, reduce cost.
The country is still to reach fire-retardant purpose by adding a large amount of small molecule fire retardants using more fireproof coating, by In the addition of a large amount of small molecule fire retardants, the water resistance of material is reduced, and cannot be guaranteed the long-term highly effective flame-retardant of material;And The methyl vinyl silicone rubber of the present invention is a kind of flame retarded polymeric material, and its matrix for being used as refractory material solves fire proofed wood Expect the inflammable problem of matrix, while adding composite flame-retardant agent causes refractory material is water-fast, weather resistance is bad, fire-retardant timeliness is short to lack The problem of falling into, has reached long-term efficient fire-retardant purpose, and the fire retardant in the application is combined for two kinds, maximizes favourable factors and minimizes unfavourable ones, increases Strong anti-flammability so that cable obtains intensity, high-modulus, high abrasion, tear-resistant material, enhances the performance of its fire resisting, extends Service life, ensure that security.
Core is by the way of twisted in the application, while uses stranded conductor again, substantially increases mineral insulated cable Flexibility.
The cross-section of cable is big, big, flexible with overload capacity, thus it is very high for insulation insulating materials selection requirements, absolutely Edge layer is formed using inorganic mineral or mineral compound, and itself will not cause fire, it is impossible to which burning is combustion-supporting, therefore prevents fires Cable is to be used in the transmission of electricity function that can be also brought into normal play under flame condition, is a kind of fireproof cable truly.
Copper core aluminium sheath flexible inorganic insulation fireproof cable inner sheath uses aluminium sheath, makes cable under combustion case, rises To insulation protection and the effect for isolating burning things which may cause a fire disaster, make full use of aluminium sheath to be prevented fires, fire insulation, not only ensure that cable fire electricity Cable, while the flexibility of cable increases substantially, and compared with aoxidizing U.S. insulated cable, substantially reduces production cost.
Main technical performance index:Conductor DC resistance should meet GB/T3956 regulations;Pressure test, which meets, to be met 3.5kV/5min does not puncture;Fire Test should be tested by BS6387 C, W, Z.
Oversheath madial wall in the application can be embedded in mould proof drier for mesh metallic plate, while be opened on lateral wall There is square through hole, be to be used to fix in transport, will not be readily transported because of being all situations such as flat picture causes to slide Meanwhile material is also saved, reduce cost.
(4)The synthesis technique of the P elements synergistic fire retardant added in the present invention is simple, yield is high, good flame retardation effect, tool Hold out broad prospects.
(5)Several different fire retardants are mixed to form a kind of new flame-retardant system in the present invention, common flame retardant effect is big In each flame-retardant composition independent role sum, cooperative effect can not only improve the efficiency of flame-retardant system, and certain in energy reduction system The dosage of kind composition or whole compositions.
(6)Silicon-series five-retardant is with the addition of in the present invention, after the fire-retardant system's finishing of cotton textiles of silicon systems, bafta anti-flammability It can significantly improve, and there is no big influence to the flexibility of fabric.
Brief description of the drawings
Fig. 1 is the structural representation of embodiments of the invention;
In figure:1- waterproof membranes, 2- flame-retardant layers, 3- oxygen barrier layers, 4- oversheaths, 5- conductors, 6- insulating barriers, 7- screen layers, 8- fire prevention Layer, 9- insulating protective layers, 10- fillers, 11- twining package tapes, 12- inner sheaths, 13- thermal insulation layers, 14- cores.
Embodiment
Embodiment 1
A kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable that the present embodiment provides, structure as shown in figure 1, including cable core, Cable core is twisted by four groups of cores 14, and waterproof membrane 1, flame-retardant layer 2, oxygen barrier layer 3 are sequentially provided with outside multigroup core 14 after being twisted And oversheath 4, every group of core is by one conductor 5 and the insulating barrier 6 being packaged in successively outside conductor 5, screen layer 7, fireprotection layer 8 and absolutely Edge protective layer 9 forms, wherein:
Per share conductor 5 is formed by six single copper core conductor strands, and it is per share in six single copper core conductors with wherein One lead copper core body centered on remaining five copper core conductor be distributed on its circumferencial direction;
Filler 10 is filled between multigroup core 14 and waterproof membrane 1 after twisted;
Twining package tape 11 and inner sheath 12 are additionally provided with outside insulating protective layer 9, inner sheath 12 is aluminium sheath, and twining package tape 11 is wound in absolutely Outside edge protective layer 9, inner sheath 12 is arranged at outside twining package tape 11, and thermal insulation layer 13 is also set up between twining package tape 11 and inner sheath 12, around Band 11 is made up of the first twining package tape and the second lapping layer overlapping, and the first twining package tape is alkali-free glass wool twining package tape, and second is wrapped Band is Mica tape;
Mould proof drier is also filled between oxygen barrier layer 3 and oversheath 4, oversheath 4 is annular hollow structure, oversheath 4 Madial wall is the metallic plate of mesh, mesh aperture 1-2mm, and the lateral wall of oversheath 4 is the metal sleeve of closing, metal sleeve On be uniformly provided with square through hole.
In the present embodiment, oxygen barrier layer 3 is made by the way of fire-proof mud is extruded;Fireprotection layer 8 is prevented using acrylic fibers cotton fiber Fiery cloth;Insulating protective layer 9 is aramid fiber layer, and thermal insulation layer 13 is Halogen silicon porcelain cement, and screen layer 7 is that tinned copper wire weaves split-phase screen Cover layer;Insulating barrier 6 is silica and kaolinic mixture layer, counts silica in mass ratio:Kaolin=3:1;Filler 10 be alkali-free glass wool.
Embodiment 2
The present embodiment provides the composition and preparation method of flame-retardant layer in embodiment 1;
Fire-retardant layer material includes following components according to the mass fraction:
Methyl vinyl silicone rubber:15 parts, acrylic emulsion:10 parts, ethylene-ethyl acrylate copolymer:10 parts, mica:1 Part, aminomethyl phenyl diethoxy silane:7 parts, modified magnesium hydroxide:5 parts, composite flame-retardant agent:5 parts, the silazane of pregnancy basic ring three: 2 parts, glass flake:1 part, PERFORMANCE OF MODIFIED VERMICULITE powder:1 part, silicone oil:4 parts, filler:0.5 part;
Filler includes following component by mass percentage: Y:3%, La:6%, Pr:5%, calcium carbonate:11%, mica:13%, glass Powder:15%, surplus is talcum powder, and above each component sum is 100%, wherein:
Modified magnesium hydroxide is produced as follows:Silane coupler is added in deionized water, stirring 10min makes its abundant water Solution, ultrasonic 10min is reloaded into watering can in ultrasonic disperse instrument, and magnesium hydroxide powder is added in high-speed mixer, uses watering can The solution of hydrolysis is sprayed on magnesium hydroxide powder surface, then mixed at high speed 15min, taking out drying can obtain being modified hydroxide Magnesium;
Composite flame-retardant agent is mixed by phosphorus nitrogen silicon ternary flame retardant and Firebrake ZB, is prepared as follows:
To equipped with condenser pipe, dropping funel three-necked flask in be passed through nitrogen 5min, sequentially add phosphoric acid and ethanol, by γ-(2, 3- glycidoxies)Propyl group front three oxosilane is added dropwise, and rate of addition is controlled in 3g/min, reacts 3h at room temperature;Reaction After end, three-necked flask is placed in thermostat water bath, is evaporated under reduced pressure with rotary evaporator and removes solvent and low-boiling-point substance, that is, obtained Phosphorus silicon binary fire retardant, wherein whole course of reaction keeps continuous mechanical agitation, mixing speed 300r/min, add in a reservoir Enter phosphorus silicon binary fire retardant and urea, at room temperature continuous mechanical agitation 5min, obtain phosphorus nitrogen silicon ternary flame retardant;
Firebrake ZB is well mixed with the phosphorus nitrogen silicon ternary flame retardant prepared, finally gives composite flame-retardant agent.
Preparing for flame-retardant layer is as follows:
A. acrylic emulsion, ethylene-ethyl acrylate copolymer, silicone oil, methyl vinyl silicone rubber will be gone to add in dispersion cylinder, Stirring at low speed 5min, mixing speed 50r/min;
B. to(a)Aminomethyl phenyl diethoxy silane, modified magnesium hydroxide, mica, the silazane of pregnancy basic ring three are added in step, Pre-dispersed 10min;
C. will(b)Mixture in step is transferred in vertical skin grinder, and 50min is sanded at a high speed under high shear, control The μ of fineness < 50 of mixture;
D. again by step(c)In mixture be transferred in dispersion tank, add composite flame-retardant agent and glass flake, PERFORMANCE OF MODIFIED VERMICULITE powder And filler is sufficiently mixed, discharges after disperseing 15min with 650r/min rotating speed, then spray material, band solidification obtains after drying To flame-retardant layer.
Embodiment 3
The present embodiment provides the composition and preparation method of flame-retardant layer in embodiment 1;
Fire-retardant layer material includes following components according to the mass fraction:
Methyl vinyl silicone rubber:30 parts, acrylic emulsion:12 parts, ethylene-ethyl acrylate copolymer:13 parts, mica:5 Part, aminomethyl phenyl diethoxy silane:10 parts, modified magnesium hydroxide:8 parts, composite flame-retardant agent:7 parts, the silicon nitrogen of pregnancy basic ring three Alkane:5 parts, glass flake:3 parts, PERFORMANCE OF MODIFIED VERMICULITE powder:3 parts, silicone oil:7 parts, filler:1 part;
Filler includes following component by mass percentage: Y:5%, La:8%, Pr:8%, calcium carbonate:13%, mica:15%, glass Powder:18%, surplus is talcum powder, and above each component sum is 100%, wherein:
Modified magnesium hydroxide is produced as follows:Silane coupler is added in deionized water, stirring 15min makes its abundant water Solution, ultrasonic 15min is reloaded into watering can in ultrasonic disperse instrument, and magnesium hydroxide powder is added in high-speed mixer, uses watering can The solution of hydrolysis is sprayed on magnesium hydroxide powder surface, then mixed at high speed 20min, taking out drying can obtain being modified hydroxide Magnesium;
Composite flame-retardant agent is mixed by phosphorus nitrogen silicon ternary flame retardant and Firebrake ZB, is prepared as follows:
To equipped with condenser pipe, dropping funel three-necked flask in be passed through nitrogen 10min, sequentially add phosphoric acid and ethanol, by γ- (2,3- glycidoxies)Propyl group front three oxosilane is added dropwise, and rate of addition is controlled in 5g/min, reacts 4h at room temperature;Instead After should terminating, three-necked flask is placed in thermostat water bath, is evaporated under reduced pressure with rotary evaporator and removes solvent and low-boiling-point substance, produced To phosphorus silicon binary fire retardant, wherein whole course of reaction keeps continuous mechanical agitation, mixing speed 400r/min, in a reservoir Phosphorus silicon binary fire retardant and urea are added, continuous mechanical agitation 10min, obtains phosphorus nitrogen silicon ternary flame retardant at room temperature;
Firebrake ZB is well mixed with the phosphorus nitrogen silicon ternary flame retardant prepared, finally gives composite flame-retardant agent.
Preparing for flame-retardant layer is as follows:
A. acrylic emulsion, ethylene-ethyl acrylate copolymer, silicone oil, methyl vinyl silicone rubber will be gone to add in dispersion cylinder, Stirring at low speed 10min, mixing speed 60r/min;
B. to(a)Aminomethyl phenyl diethoxy silane, modified magnesium hydroxide, mica, the silazane of pregnancy basic ring three are added in step, Pre-dispersed 15min;
C. will(b)Mixture in step is transferred in vertical skin grinder, and 100min is sanded at a high speed under high shear, control The μ of fineness < 50 of mixture;
D. again by step(c)In mixture be transferred in dispersion tank, add composite flame-retardant agent and glass flake, PERFORMANCE OF MODIFIED VERMICULITE powder And filler is sufficiently mixed, discharges after disperseing 25min with 750r/min rotating speed, then spray material, band solidification obtains after drying To flame-retardant layer.
Embodiment 4
The present embodiment provides the composition and preparation method of flame-retardant layer in embodiment 1;
Fire-retardant layer material includes following components according to the mass fraction:
Methyl vinyl silicone rubber:20 parts, acrylic emulsion:11 parts, ethylene-ethyl acrylate copolymer:12 parts, mica:3 Part, aminomethyl phenyl diethoxy silane:8 parts, modified magnesium hydroxide:7 parts, composite flame-retardant agent:6 parts, the silazane of pregnancy basic ring three: 3 parts, glass flake:2 parts, PERFORMANCE OF MODIFIED VERMICULITE powder:2 parts, silicone oil:5 parts, filler:0.8 part;
Filler includes following component by mass percentage: Y:4%, La:7%, Pr:6%, calcium carbonate:12%, mica:14%, glass Powder:16%, surplus is talcum powder, and above each component sum is 100%, wherein:
Modified magnesium hydroxide is produced as follows:Silane coupler is added in deionized water, stirring 13min makes its abundant water Solution, ultrasonic 13min is reloaded into watering can in ultrasonic disperse instrument, and magnesium hydroxide powder is added in high-speed mixer, uses watering can The solution of hydrolysis is sprayed on magnesium hydroxide powder surface, then mixed at high speed 18min, taking out drying can obtain being modified hydroxide Magnesium;
Composite flame-retardant agent is mixed by phosphorus nitrogen silicon ternary flame retardant and Firebrake ZB, is prepared as follows:
To equipped with condenser pipe, dropping funel three-necked flask in be passed through nitrogen 8min, sequentially add phosphoric acid and ethanol, by γ-(2, 3- glycidoxies)Propyl group front three oxosilane is added dropwise, and rate of addition is controlled in 4/min, reacts 3h at room temperature;Reaction knot Shu Hou, three-necked flask is placed in thermostat water bath, is evaporated under reduced pressure with rotary evaporator and removes solvent and low-boiling-point substance, that is, obtain phosphorus Silicon binary fire retardant, wherein whole course of reaction keeps continuous mechanical agitation, mixing speed 350r/min, add in a reservoir Phosphorus silicon binary fire retardant and urea, continuous mechanical agitation 8min, obtains phosphorus nitrogen silicon ternary flame retardant at room temperature;
Firebrake ZB is well mixed with the phosphorus nitrogen silicon ternary flame retardant prepared, finally gives composite flame-retardant agent.
Preparing for flame-retardant layer is as follows:
A. acrylic emulsion, ethylene-ethyl acrylate copolymer, silicone oil, methyl vinyl silicone rubber will be gone to add in dispersion cylinder, Stirring at low speed 8min, mixing speed 55r/min;
B. to(a)Aminomethyl phenyl diethoxy silane, modified magnesium hydroxide, mica, the silazane of pregnancy basic ring three are added in step, Pre-dispersed 13min;
C. will(b)Mixture in step is transferred in vertical skin grinder, and 80min is sanded at a high speed under high shear, control The μ of fineness < 50 of mixture;
D. again by step(c)In mixture be transferred in dispersion tank, add composite flame-retardant agent and glass flake, PERFORMANCE OF MODIFIED VERMICULITE powder And filler is sufficiently mixed, discharges after disperseing 18min with 680r/min rotating speed, then spray material, band solidification obtains after drying To flame-retardant layer.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape Into technical scheme, all fall within the protection domains of application claims.

Claims (9)

  1. A kind of 1. copper core aluminium sheath inorganic insulation flexible fire-retardant cable, it is characterised in that:Including cable core, the cable core is by multigroup line Core(14)Be twisted, it is described it is twisted after multigroup core(14)It is sequentially provided with waterproof membrane outside(1), flame-retardant layer(2), oxygen barrier layer (3)And oversheath(4), core is by one conductor described in every group(5)Conductor is packaged in successively(5)Outer insulating barrier(6), shielding Layer(7), fireprotection layer(8)And insulating protective layer(9)Composition, wherein:
    The per share conductor(5)Formed by six single copper core conductor strands, and it is per share in six single copper core conductors By one of them lead copper core body centered on remaining five copper core conductor be distributed on its circumferencial direction;
    Multigroup core after twisted(14)With the waterproof membrane(1)Between be filled with filler(10);
    The insulating protective layer(9)It is additionally provided with twining package tape outside(11)And inner sheath(12), the twining package tape(11)It is wound in institute State insulating protective layer(9)Outside, the inner sheath(12)It is arranged at the twining package tape(11)Outside, the twining package tape(11)With inner sheath (12)Between also set up thermal insulation layer(13), described twining package tape(11)It is made up of the first twining package tape and the second lapping layer overlapping, institute The first twining package tape stated is alkali-free glass wool twining package tape, and the second described twining package tape is Mica tape;
    The oxygen barrier layer(3)With the oversheath(4)Between be also filled with mould proof drier, described oversheath(4)For ring Shape hollow structure, oversheath(4)Madial wall be mesh metallic plate, the mesh aperture is 1-2mm, oversheath(4)It is outer Side wall is the metal sleeve of closing, and square through hole is uniformly provided with the metal sleeve.
  2. 2. copper core aluminium sheath inorganic insulation flexible fire-retardant cable according to claim 1, it is characterised in that:Described interior shield Set(12)For aluminium sheath.
  3. 3. copper core aluminium sheath inorganic insulation flexible fire-retardant cable according to claim 1, it is characterised in that:The oxygen barrier layer (3)Made by the way of fire-proof mud is extruded;Described fireprotection layer(8)Using acrylic fibers cotton fiber flameproof fabric.
  4. 4. copper core aluminium sheath inorganic insulation flexible fire-retardant cable according to claim 1, it is characterised in that:The cable core by Four groups of cores(14)Composition.
  5. 5. copper core aluminium sheath inorganic insulation flexible fire-retardant cable according to claim 1, it is characterised in that:The insulation is protected Sheath(9)For aramid fiber layer, described thermal insulation layer(13)For Halogen silicon porcelain cement, described screen layer(7)Compiled for tinned copper wire Knit split-phase screen layer.
  6. 6. copper core aluminium sheath inorganic insulation flexible fire-retardant cable according to claim 1, it is characterised in that:Described insulation Layer(6)For silica and kaolinic mixture layer, silica is counted in mass ratio:Kaolin=3:1.
  7. 7. oxygen barrier layer copper core aluminium sheath fireproof cable according to claim 1, it is characterised in that:The filler(10)For Alkali-free glass wool.
  8. 8. oxygen barrier layer copper core aluminium sheath fireproof cable according to claim 1, it is characterised in that:The fire-retardant layer material is pressed Mass fraction meter includes following components:
    Methyl vinyl silicone rubber:15-30 parts, acrylic emulsion:10-12 parts, ethylene-ethyl acrylate copolymer:10-13 Part, mica:1-5 parts, aminomethyl phenyl diethoxy silane:7-10 parts, modified magnesium hydroxide:5-8 parts, composite flame-retardant agent:5-7 Part, the silazane of pregnancy basic ring three:2-5 parts, glass flake:1-3 parts, PERFORMANCE OF MODIFIED VERMICULITE powder:1-3 parts, silicone oil:4-7 parts, filler: 0.5-1 parts;
    Described filler includes following component by mass percentage: Y:3-5%, La:6-8%, Pr:5-8%, calcium carbonate:11- 13%, mica:13-15%, glass dust:15-18%, surplus are talcum powder, and above each component sum is 100%, wherein:
    The modified magnesium hydroxide is produced as follows:Silane coupler is added in deionized water, stirring 10-15min makes it It is fully hydrolyzed, ultrasonic 10-15min is reloaded into watering can in ultrasonic disperse instrument, and magnesium hydroxide powder is added into high-speed mixer In, the solution of hydrolysis is sprayed on magnesium hydroxide powder surface, then mixed at high speed 15-20min with watering can, it is i.e. available to take out drying Modified magnesium hydroxide;
    The composite flame-retardant agent is mixed by phosphorus nitrogen silicon ternary flame retardant and Firebrake ZB, is prepared as follows:
    To equipped with condenser pipe, dropping funel three-necked flask in be passed through nitrogen 5-10min, sequentially add phosphoric acid and ethanol, by γ- (2,3- glycidoxies)Propyl group front three oxosilane is added dropwise, and rate of addition is controlled in 3-5g/min, reacts 3- at room temperature 4h;After reaction terminates, three-necked flask is placed in thermostat water bath, is evaporated under reduced pressure with rotary evaporator and removes solvent and low boiling Thing, that is, phosphorus silicon binary fire retardant is obtained, wherein whole course of reaction keeps continuous mechanical agitation, mixing speed 300-400r/ Min, phosphorus silicon binary fire retardant and urea are added in a reservoir, at room temperature continuous mechanical agitation 5-10min, obtain the resistance of phosphorus nitrogen silicon ternary Fire agent;
    Firebrake ZB is well mixed with the phosphorus nitrogen silicon ternary flame retardant prepared, finally gives composite flame-retardant agent.
  9. 9. oxygen barrier layer copper core aluminium sheath fireproof cable according to claim 8, it is characterised in that:The preparation of the flame-retardant layer It is as follows:
    A. acrylic emulsion, ethylene-ethyl acrylate copolymer, silicone oil, methyl vinyl silicone rubber will be gone to add in dispersion cylinder, Stirring at low speed 5-10min, mixing speed 50-60r/min;
    B. to(a)Aminomethyl phenyl diethoxy silane, modified magnesium hydroxide, mica, the silazane of pregnancy basic ring three are added in step, Pre-dispersed 10-15min;
    C. will(b)Mixture in step is transferred in vertical skin grinder, and 50-100min is sanded at a high speed under high shear, Control the μ of fineness < 50 of mixture;
    D. again by step(c)In mixture be transferred in dispersion tank, add composite flame-retardant agent and glass flake, PERFORMANCE OF MODIFIED VERMICULITE powder And filler is sufficiently mixed, discharges after disperseing 15-25min with 650-750r/min rotating speed, then spray material, band solidification is dry Flame-retardant layer is obtained after dry.
CN201710727749.XA 2017-08-23 2017-08-23 A kind of copper core aluminium sheath inorganic insulation flexible fire-retardant cable Pending CN107564606A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109054066A (en) * 2018-06-06 2018-12-21 荣马电器有限公司 A kind of high-strength anti-flaming fiberglass cable bridge rack
CN109135032A (en) * 2018-06-29 2019-01-04 国网山东省电力公司惠民县供电公司 A kind of flame-resistant insulation multi-functional cable
CN109627528A (en) * 2019-01-24 2019-04-16 广州澳通电线电缆有限公司 A kind of cable fire-proof layer

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Publication number Priority date Publication date Assignee Title
CN104727145A (en) * 2015-03-19 2015-06-24 苏州陈恒织造有限公司 Preparation method and application of cotton environment-friendly flame retardant
CN106024152A (en) * 2016-07-26 2016-10-12 江苏浦漕科技股份有限公司 Heavy flexible mineral insulated fireproof cable
CN106057298A (en) * 2016-07-26 2016-10-26 江苏浦漕科技股份有限公司 High fire-resistant flexible mineral insulated double sheathed cable
CN106519460A (en) * 2016-11-09 2017-03-22 安徽中翰高分子科技有限公司 Flame-retardant thermoplastic vulcanized rubber material
CN206225041U (en) * 2016-11-25 2017-06-06 昆明昆缆龙源电线电缆有限公司 A kind of copper core polyvinyl chloride insulating flexible cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104727145A (en) * 2015-03-19 2015-06-24 苏州陈恒织造有限公司 Preparation method and application of cotton environment-friendly flame retardant
CN106024152A (en) * 2016-07-26 2016-10-12 江苏浦漕科技股份有限公司 Heavy flexible mineral insulated fireproof cable
CN106057298A (en) * 2016-07-26 2016-10-26 江苏浦漕科技股份有限公司 High fire-resistant flexible mineral insulated double sheathed cable
CN106519460A (en) * 2016-11-09 2017-03-22 安徽中翰高分子科技有限公司 Flame-retardant thermoplastic vulcanized rubber material
CN206225041U (en) * 2016-11-25 2017-06-06 昆明昆缆龙源电线电缆有限公司 A kind of copper core polyvinyl chloride insulating flexible cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109054066A (en) * 2018-06-06 2018-12-21 荣马电器有限公司 A kind of high-strength anti-flaming fiberglass cable bridge rack
CN109135032A (en) * 2018-06-29 2019-01-04 国网山东省电力公司惠民县供电公司 A kind of flame-resistant insulation multi-functional cable
CN109627528A (en) * 2019-01-24 2019-04-16 广州澳通电线电缆有限公司 A kind of cable fire-proof layer

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Application publication date: 20180109