CN104133275B - Elevator cable - Google Patents
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- CN104133275B CN104133275B CN201410317925.9A CN201410317925A CN104133275B CN 104133275 B CN104133275 B CN 104133275B CN 201410317925 A CN201410317925 A CN 201410317925A CN 104133275 B CN104133275 B CN 104133275B
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Abstract
The invention relates to an elevator cable which includes first to eighth optical-fiber casings and a sheath assembly. Each of the first to eighth optical-fiber casings includes a cable core formed through twisting of metal wires and a cable-core casing. Each optical-fiber casing in the first to forth optical-fiber casings is closely welted with two adjacent optical-fiber casings and the first to forth optical-fiber casings are arrayed in to a rectangle, the circle center of the sheath assembly being the center, and the fifth to eighth optical-fiber casings abut against each angle of the rectangle respectively. The cable-core casings are made of a PE foaming composite material. The sheath assembly includes an internal sheath, a signal shielding layer and an external sheath, which sequentially wrap the optical-fiber casings from inside to outside. A ground wire is also arranged in the signal shielding layer. Because the optical-fiber casings of the elevator cable are arrayed into a shape of X and four support bars are arranged in four optical-fiber casings respectively, the tensile strength and anti-compression capabilities of the cable are strengthened; and moreover, the cable-core casings in the optical-fiber casings are made of the PE foaming composite material so that the elevator cable is lighter in weight and better in flexibility and the service life of the cable is longer.
Description
Technical field
The invention belongs to optic communication transmission technique field, is related to a kind of optical cable, particularly a kind of elevator cable.
Background technology
Optical cable be in order to meet optics, the performance specification of machinery or environment and manufacture, it is using being placed in cladding sheath
In one or more optical fiber as transmission medium and the communications cable component that can use individually or in groups.Optical cable mainly by
Optical fiberss and plastic protective sleeve pipe and plastic peel are constituted, and optical cable is that a number of optical fiber constitutes cable according to certain way
The heart, is surrounded by outward sheath, the also cladding outer jacket having, to a kind of communication line for realizing optical signal transmission.
At present, patent publication No. discloses a kind of data cable for CN202711846U, and the data cable includes that one is hollow
Insulating sheath, the isolation skeleton and four groups of twisted pair wires inside insulating sheath, isolation skeleton is by insulating sheath interior part
Four cavitys are separated out, four groups of twisted pair wires are arranged in corresponding cavity, cause that wire rod pliability is poor, line using isolation frame design
The anti-outside electromagnetic interference of cable is weak.
The content of the invention
The purpose of the present invention is there are the problems referred to above for existing technology, it is proposed that a kind of lightweight, pliability are high, use
A kind of elevator cable of life-span length.
The purpose of the present invention can be realized by following technical proposal：A kind of elevator cable, including the first to the 8th electric wire
Sleeve pipe and the jacket assembly being sleeved on outside the first to the 8th cable conduct, the first to the 8th described cable conduct include by
Cable core and the cable core sleeve pipe around cable core setting that strands of metal wire is twisted into, each electric wire set in first to fourth cable conduct
Pipe is with the tight welt of adjacent two cable conduct and first to fourth cable conduct is arranged in a square centered on the jacket assembly center of circle
Shape, the 5th to the 8th cable conduct is made up respectively against each angle of rectangle, described cable core sleeve pipe of PE foam composite materials, PE
Foam composite material is by following parts by weight into being grouped into：PE：80-120 parts, modifying agent：3-8 parts, foaming agent：1-6 parts, crosslinking
Agent：0.01-0.1 parts, nucleator：1-5 parts, dispersant：0.5-3 parts, fire retardant：20-40 parts, filler：5-20 parts；
Described jacket assembly includes oversheath, signal shielding layer and inner sheath, described inner sheath, signal shielding layer
And oversheath is coated on cable conduct successively from the inside to the outside, in described signal shielding layer ground wire is additionally provided with.
Cable core and surround cable that first to the 8th cable conduct of elevator cable of the present invention is twisted into using strands of metal wire
The cable core sleeve pipe composition that core is arranged, its cable core sleeve pipe is made using PE foam composite materials, and the present invention passes through reasonable compatibility
The composition and its parts by weight of PE foam composite materials, makes cable core sleeve pipe have light weight, absorbs that shock loading is good, specific strength
The features such as height, good, corrosion-resistant thermal insulation, good flame resistance, excellent electrical insulation capability so that cable quality lighter, pliability is more preferable,
Extend the service life of cable.
In a kind of above-mentioned elevator cable, described PE is mixed by HDPE and LDPE, the HDPE and LDPE's
Ratio of weight and number is (2-4):1.PE is divided into HDPE and LDPE because of the difference of polymerization, molecular weight height, chain structure.HDPE has
The features such as having higher weatherability, resistance to vapour permeability, environmental stress crack resistance, electrical insulating property and impact resistance, and
The molecular structure of HDPE is linear, and density is big, and side chain is few, is the preferred material of high-foaming, but due to the linear structure of HDPE
Make its melt viscosity big, elasticity is low, and tension force is low, is unfavorable for producing uniform high-foaming abscess.And LDPE density is low, material is the most
Softness, and strand is in long branched chain structure, and dielectric loss characteristic is less than HDPE, and dielectric constant is low compared with HDPE, there is larger melting
Body elasticity and higher melt tension, when foam degrees are higher, are conducive to producing abscess of uniform size, but the intensity of product compared with
It is low.Therefore, the application selects to mix HDPE and LDPE, and with reference to respective advantage the more superior cable conduct of performance is made.Make
It had both had the mechanical performance of HDPE, constituted the skeleton of foams, bore external force；There is processing characteristics, low Jie of LDPE again
Electric constant and dielectric loss angle tangent, are preferably minimized decay.
Experimental researches prove that, the present invention controls the ratio of weight and number of HDPE and LDPE at (2-4):When 1, composite
With higher melt strength and preferable mobility, can obtain high under low melt temperature when cable core sleeve pipe is produced
Expansion ratio, and foam structure is good, while high melt strength can improve the ability of nuclei of bubbles stretch-proof and shearing again, bears
Gas pressure and do not make lather collapse, it is to avoid because of the raising of extrusion temperature, cause melt strength, produce cable core sleeve pipe
Tensile fracture, in a large number effusion causes rough surface to cause foamed gas, or even formation compression ring makes between cable core and cable core sleeve pipe
Cable core loses viscosity with cable core sleeve pipe, has a strong impact on the stability and service life of cable.
In a kind of above-mentioned elevator cable, described modifying agent is EVA, the quality of VA monomers in the modifying agent EVA
Percentage ratio is 10-20%.EVA due to introducing VA monomers in strand, so as to reduce degree of crystallinity, improve pliability,
Impact resistance etc., and with the increase of VA content of monomer, its suppleness is relative to improve more apparent.The present invention is modified with EVA
Agent carrys out modified PE to improve the pliability and uniform in foaming of product, and the addition of EVA stretches product tensile strength and fracture
Long rate is all accordingly improved.But, modifying agent all must be controlled within the specific limits, not so can be negatively affected to product.
In the present invention, if the mass percent of VA monomers exceeds above-mentioned span of control in modifying agent EVA consumptions and EVA, it will cause
Product foam structure is uneven, rough surface, affects cable performance and service life.
In a kind of above-mentioned elevator cable, described foaming agent be azodicarbonamide, 4, the double benzene sulfonyls of 4 '-oxo
One or more in hydrazine, dinitrosopentamethlyene tetramine, p-toluene sulfonylsemicarbazide.Foaming agent of the present invention is sent out for exothermicity
Infusion, dispersed can drastically decompose in the composite when reaching uniform temperature in process, and stable discharges
N2Or with N2Based on multiple gases, N2In the composite diffusion velocity is little, is difficult to be escaped from foaming body, and bubbling efficiency is high,
Product is set to form trickle and uniform micropore.On the other hand, because foaming is the physical and chemical process of a complexity, during foaming
It is required that outwards the pressure of expansion reaches dynamic equilibrium to gas with cell wall smelt surface tension.Therefore, the consumption of foaming agent is to multiple
Obtain the fine and closely woven foaming body of uniform foam cell in condensation material forming process to play an important role.Experiment shows that foaming agent of the present invention is used
When measuring within the above range, foamed time is concentrated, foaming is uniform, and the density of product is gradually reduced, best results.
Because the decomposition temperature of foaming agent is higher than the processing temperature of composite, it is therefore desirable to reduce foaming agent and decompose temperature
Degree, improves gas forming amount, improves the dispersibility and foam stability of foaming agent, improves machinability of foaming agent etc..Prior art
In usually add blowing agent activators, but, it is of the present invention to find Jing after research, if select to add in the composite it is suitable
Cross-linking agent, nucleator, filler and dispersant, can also play a part of blowing promotor, and no longer need extra addition foaming to live
Agent.
In a kind of above-mentioned elevator cable, described cross-linking agent is DCP.Because PE belongs to Crystalline plastics, work as temperature
During more than PE fusing points, melt viscosity drastically declines, and in foaming process, melt must have certain viscoelasticity, Cai Nengbao
It is afford to live in bubble.Therefore, the present invention adds in the composite crosslink agent DCP, makes foaming agent before decomposition, the own Jing of crosslink agent DCP
Decompose and make melt that a certain degree of crosslinking occurs, improve the viscoelasticity of melt, when melt temperature is further raised, foaming agent
Just start to decompose and discharge gas formation bubble, and be crosslinked holding and growth that the melt for obtaining is beneficial to bubble, favorably
The more superior cable core set tubing products of performance are made in composite foaming.
In a kind of above-mentioned elevator cable, described nucleator is titanium dioxide；Described filler be glass fibre,
One or more in Pulvis Talci, Muscovitum, asbestos, Calcium Carbonate；The particle diameter of the nucleator and filler is 10-200nm.This
It is bright to add appropriate nucleator titanium dioxide in the composite, suitable surface energy center is provided for composite, reduce
The integral surface tension force of composite, there is provided substantial amounts of nucleating point, promotes bubble nucleating.Further, since PE foaming composite woods
The impact strength of material is higher, but rigidity and croop property are poor, in order to improve composite product cable core sleeve pipe rigidity and
Reduce creep, in the composite compounding adds filler to the present invention, improves tensile strength and the bending of product cable core sleeve pipe
Intensity.And, Pulvis Talci, Muscovitum, the Calcium Carbonate in filler can also play a part of nucleator, and with nucleator promotion gas is played
Soak the synergistic effect of core.
In a kind of above-mentioned elevator cable, described dispersant is one or two in hard paraffin, zinc stearate.
The present invention adds in the composite dispersant, and composite not only can be made to be uniformly dispersed in process, moreover it is possible to
Into in foaming agent aggregate, the captivation between foaming agent is reduced, reduce the energy needed for foaming agent thinning process.In foaming
After agent refinement dispersion, because foaming agent particle diameter reduces, surface area increase, surface free energy increases, thus foaming agent has and coagulates again
Poly- probability, at this moment, dispersant forms an adsorption layer on scattered foaming agent surface, to reduce its surface energy, makes foaming
Agent particle is collided again also will not be condensed again.So, add above-mentioned dispersant to improve product cable core set in the composite
The quality of pipe.
In a kind of above-mentioned elevator cable, described fire retardant is made up of APP, carbon source and inorganic particle, the carbon source
For one or more in PER, EG, dextrin, the inorganic particle is particle diameter in the aluminium hydroxide of 3-50nm, magnesium hydroxide, swollen
One or more in swollen graphite, carbon black, the APP, carbon source, the ratio of weight and number of inorganic particle are (1.5-3.5)：1：
(0.1-0.5).Because PE limited oxygen indexs itself are very low in composite, about 17.4, easily burn, and, PE foaming is multiple
Condensation material density is reduced, and product easily burns, therefore, it is necessary to add fire retardant in the composite, improves the fire-retardant of product
Performance.Composite of the present invention selects Intumscent Flame Retardant System, and APP has the function of acid source in system, meanwhile, in thermal decomposition
Ammonia and water vapour can be discharged, the function with source of the gas, and Intumscent Flame Retardant System is typically by acid source, carbon source and source of the gas three
Part constitutes, so needing to add carbon source to compound with APP, fire-retardant effect is played jointly.But, APP and carbon source composition it is swollen
Swollen type flame-retardant system anti-flammability UL-94 in PE fails to reach V-0, therefore, the present invention adds appropriate nothing in flame-retardant system
Machine powder body, plays flame retardant synergism, makes product cable core sleeve pipe have preferable anti-flammability.
In a kind of above-mentioned elevator cable, the preparation method of described cable core sleeve pipe is：First, by above-mentioned cable core sleeve pipe
Constituent and its parts by weight weigh raw material, put into high-speed kneading machine mix homogeneously；Then the material of mix homogeneously is fed
Enter extrusion molding in extruder, extruder first paragraph temperature is 135-150 DEG C, and second segment temperature is 150-180 DEG C, the 3rd section of temperature
Spend for 180-200 DEG C, the 4th section of temperature is 135-145 DEG C, and extruder rotating speed is 20-40r/min.
In a kind of above-mentioned elevator cable, set in any two cable conducts in first to fourth described cable conduct
Support bar is equipped with, support bar is provided with any two cable conducts in the 5th to the 8th described cable conduct；Described electricity
The angle that thread casing is in described rectangle diagonal is α, and described α angular ranges are 0 degree to 30 degree.
Compared with prior art, the present invention has following advantage：
1. elevator cable of the present invention arranges cable conduct and arranges in " X " type, and four support bars are separately positioned on four electric wires
In sleeve pipe, optical cable tensile anti-pressure ability is enhanced.
2. cable core sleeve pipe is made using PE foam composite materials in elevator cable of the present invention, makes elevator cable quality lighter,
More preferably, cable service life is longer for pliability.
3. PE foam composite materials of the present invention are by the reasonable compound modifiers of parts by weight rational HDPE and LDPE, foaming
Agent, cross-linking agent, nucleator, dispersant and filler are made, and make composite bubbling efficiency height, uniform, uniform foam cell of bubbling thin
It is close, so that product cable core casing density is low, the high comprehensive performance such as intensity, rigidity, pliability.
4. fire retardant is added in PE foam composite materials of the present invention, fire retardant is made up of APP, carbon source and inorganic particle,
APP serves flame retardant synergism with carbon source composition Intumscent Flame Retardant System with inorganic particle, makes the fire-retardant of product cable core sleeve pipe
Property UL-94 reaches V-0.
Description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the structural representation of another preferred embodiment of the invention.
In figure, the 10, first cable conduct；20th, the second cable conduct；30th, the 3rd cable conduct；40th, the 4th cable conduct；
50th, the 5th cable conduct；60th, the 6th cable conduct；70th, the 7th cable conduct；80th, the 8th cable conduct；111st, cable core；112、
Cable core sleeve pipe；1121st, support bar；120th, jacket assembly；121st, oversheath；122nd, signal shielding layer；1221st, ground wire；123rd, it is interior
Sheath；130th, rectangle.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, this elevator cable includes the first to the 8th cable conduct and is sleeved on the first to the 8th electric wire
The jacket assembly 120 of jacket exterior, the first to the 8th cable conduct includes the cable core 111 and ring being twisted into by strands of metal wire
Around the cable core sleeve pipe 112 that cable core 111 is arranged, each cable conduct is tight with adjacent two cable conduct in first to fourth cable conduct
Closely connected side and first to fourth cable conduct is arranged in a rectangle 130 centered on the center of circle of jacket assembly 120, the 5th to the 8th is electric
Thread casing is respectively against each angle of rectangle 130；Jacket assembly 120 includes oversheath 121, signal shielding layer 122 and inner sheath
123, inner sheath 123, signal shielding layer 122 and oversheath 121 are coated on cable conduct successively from the inside to the outside, signal shielding
Ground wire 1221 is additionally provided with layer 122.
Preferably, be provided with support bar 1121 in first to fourth cable conduct in any two cable conducts, the 5th to
Support bar 1121 is provided with 8th cable conduct in any two cable conducts；Specifically, the first cable conduct and second electric
Support bar 1121 is provided with thread casing, in the 7th cable conduct and the 8th cable conduct support bar 1121 is provided with.
It is further preferred that the angle that cable conduct is in the diagonal of rectangle 130 is α, α angular ranges are 0 degree to 30
Degree.
The present invention uses reinforced wire aramid fiber yarn litzendraht wire to alleviate wire rod own wt, aluminium foil as the material of inner sheath 123
Plus tinned copper wire makes shield effectiveness performance of the present invention more superior as the material of signal shielding layer 122, anti-outside electromagnetic interference increases
By force；Cable core sleeve pipe 112 is made using PE foam composite materials makes cable pliability more preferably and prolongation cable service life.
In an initial condition, the present invention arranges eight cable conducts and arranges in " X " type, and four support bars 1121 are with counterclockwise
It is successively set in four different cable conducts for order, support bar 1121 enhances optical cable tensile anti-pressure ability, and supports
Bar set location difference avoids the transmission performance of optical cable weak by power extruding, the stretching in a direction, in signal shielding layer 122
It is provided with ground wire 1221, it is to avoid the generation of electric leakage accident.
Above-mentioned cable core sleeve pipe 112 is made up of PE foam composite materials, and PE foam composite materials are by following parts by weight composition
Composition：PE：80-120 parts, modifying agent：3-8 parts, foaming agent：1-6 parts, cross-linking agent：0.01-0.1 parts, nucleator：1-5 parts, point
Powder：0.5-3 parts, fire retardant：20-40 parts, filler：5-20 parts；
Table 1：The constituent of embodiment of the present invention 1-4 cable core sleeve pipe and its parts by weight
Embodiment 1：
First, raw material is weighed by the constituent and its parts by weight of the cable core sleeve pipe of embodiment in table 11, and controls raw material
The mass percent of VA monomers is 10% in middle modifying agent EVA, and inorganic particle particle diameter is 3-10nm, and the particle diameter of nucleator is 10-
30nm, the particle diameter of filler is 10-50nm.Then the raw material for weighing is put into into high-speed kneading machine mix homogeneously, after mix homogeneously
Material is fed into extrusion molding in extruder, extruder first paragraph temperature is 135 DEG C, and second segment temperature is 150 DEG C, the 3rd section of temperature
Spend for 180 DEG C, the 4th section of temperature is 135 DEG C, and extruder rotating speed is 20r/min.
Embodiment 2：
First, raw material is weighed by the constituent and its parts by weight of the cable core sleeve pipe of embodiment in table 12, and controls raw material
The mass percent of VA monomers is 15% in middle modifying agent EVA, and inorganic particle particle diameter is 10-20nm, and the particle diameter of nucleator is 30-
80nm, the particle diameter of filler is 50-100nm.Then the raw material for weighing is put into into high-speed kneading machine mix homogeneously, after mix homogeneously
Material is fed into extrusion molding in extruder, extruder first paragraph temperature is 140 DEG C, and second segment temperature is 160 DEG C, the 3rd section of temperature
Spend for 185 DEG C, the 4th section of temperature is 140 DEG C, and extruder rotating speed is 25r/min.
Embodiment 3：
First, raw material is weighed by the constituent and its parts by weight of the cable core sleeve pipe of embodiment in table 13, and controls raw material
The mass percent of VA monomers is 16% in middle modifying agent EVA, and inorganic particle particle diameter is 20-30nm, and the particle diameter of nucleator is 80-
150nm, the particle diameter of filler is 100-150nm.Then the raw material for weighing is put into into high-speed kneading machine mix homogeneously, mix homogeneously
Afterwards material is fed into extrusion molding in extruder, extruder first paragraph temperature is 145 DEG C, and second segment temperature is 170 DEG C, the 3rd section
Temperature is 190 DEG C, and the 4th section of temperature is 140 DEG C, and extruder rotating speed is 30r/min.
Embodiment 4：
First, raw material is weighed by the constituent and its parts by weight of the cable core sleeve pipe of embodiment in table 14, and controls raw material
The mass percent of VA monomers is 20% in middle modifying agent EVA, and inorganic particle particle diameter is 30-50nm, and the particle diameter of nucleator is
150-200nm, the particle diameter of filler is 150-200nm.Then the raw material for weighing is put into into high-speed kneading machine mix homogeneously, mixing
Material is fed into extrusion molding in extruder after uniform, extruder first paragraph temperature is 150 DEG C, and second segment temperature is 180 DEG C, the
Three sections of temperature are 200 DEG C, and the 4th section of temperature is 145 DEG C, and extruder rotating speed is 40r/min.
Comparative example 1：
Based on embodiment 3 in table 1, wherein, PE is mixed by 50 parts of HDPE and 50 part of LDPE, remaining condition with
Embodiment 3 is identical, prepares cable core sleeve pipe.
Comparative example 2：
Based on embodiment 3 in table 1, wherein, fire retardant is only made up of 25 parts of APP and 10 part of dextrin, without inorganic powder
Body, remaining condition is same as Example 3, prepares cable core sleeve pipe.
Cable core sleeve pipe obtained in embodiment of the present invention 1-4 and comparative example 1-2 is carried out into performance test, test result such as table 2
It is shown.
Table 2：The performance test results of cable core sleeve pipe obtained in embodiment of the present invention 1-4 and comparative example 1-2
As known from Table 2, the cable according to obtained in the constituent of PE foam composite materials of the present invention and its parts by weight compatibility
Core sleeve density is low, and frothing percentage is high, and uniform foam cell is fine and closely woven, and the good mechanical performance such as the intensity of sleeve pipe, and fire resistance is good.And
In comparative example 1 because PE be by ratio of weight and number be 1:1 HDPE and LDPE is mixed, therefore, product cable core sleeve pipe is no matter
Be density, frothing percentage and string porosity etc. performance all not as good as Jing reasonable compatibilities of the present invention PE foam composite materials made by cable core set
The performance of pipe is preferable, and and for example comparative example 2, are not added with inorganic particle in flame-retardant system, and the flame retardant effect of its product fails to reach V-
0, flame retardant effect is undesirable.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications to described specific embodiment or supplement or replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (8)
1. a kind of elevator cable, including the first to the 8th cable conduct and the sheath being sleeved on outside the first to the 8th cable conduct
Component, it is characterised in that
Described first to the 8th cable conduct includes the cable core being twisted into by strands of metal wire and the cable arranged around cable core
Core sleeve；
Each cable conduct is with the tight welt of adjacent two cable conduct and first to fourth electric wire in first to fourth cable conduct
Sleeve pipe is arranged in a rectangle centered on the jacket assembly center of circle, and the 5th to the 8th cable conduct is respectively against each angle of rectangle；
It is provided with support bar in first to fourth described cable conduct in any two cable conducts, the described the 5th to the 8th
Support bar is provided with cable conduct in any two cable conducts；The diagonal institute of described cable conduct and described rectangle
The angle for being in is α, and described α angular ranges are 0 degree to 30 degree；
Described cable core sleeve pipe is made up of PE foam composite materials, and PE foam composite materials are by following parts by weight into being grouped into：
PE：80-120 parts, modifying agent：3-8 parts, foaming agent：1-6 parts, cross-linking agent：0.01-0.1 parts, nucleator：1-5 parts, dispersant：
0.5-3 parts, fire retardant：20-40 parts, filler：5-20 parts；Wherein, described PE is mixed by HDPE and LDPE, HDPE with
The ratio of weight and number of LDPE is (2-4):1；
Described jacket assembly includes oversheath, signal shielding layer and inner sheath, described inner sheath, signal shielding layer and
Oversheath is coated on cable conduct successively from the inside to the outside, and in described signal shielding layer ground wire is additionally provided with.
2. a kind of elevator cable according to claim 1, described modifying agent is EVA, VA monomers in the modifying agent EVA
Mass percent be 10-20%.
3. a kind of elevator cable according to claim 1, described foaming agent be azodicarbonamide, 4,4 '-oxo is double
One or more in benzene sulfonyl hydrazide, dinitrosopentamethlyene tetramine, p-toluene sulfonylsemicarbazide.
4. a kind of elevator cable according to claim 1, described cross-linking agent is DCP.
5. a kind of elevator cable according to claim 1, described nucleator is titanium dioxide；Described filler is glass
One or more in glass fiber, Pulvis Talci, Muscovitum, asbestos, Calcium Carbonate；The particle diameter of the nucleator and filler is 10-
200nm。
6. a kind of elevator cable according to claim 1, described dispersant is the one kind in hard paraffin, zinc stearate
Or two kinds.
7. a kind of elevator cable according to claim 1, described fire retardant is made up of APP, carbon source and inorganic particle, institute
It is one or more in PER, EG, dextrin to state carbon source, and the inorganic particle is aluminium hydroxide, hydroxide of the particle diameter in 3-50nm
One or more in magnesium, expanded graphite, carbon black, the APP, carbon source, the ratio of weight and number of inorganic particle are (1.5-3.5)：
1：(0.1-0.5).
8. a kind of elevator cable according to claim 1, the preparation method of described cable core sleeve pipe is：First, by right
The constituent and its parts by weight for requiring the cable core sleeve pipe described in 1 weighs raw material, puts into high-speed kneading machine mix homogeneously；Then
By extrusion molding in the material feeding extruder of mix homogeneously, extruder first paragraph temperature is 135-150 DEG C, and second segment temperature is
150-180 DEG C, the 3rd section of temperature is 180-200 DEG C, and the 4th section of temperature is 135-145 DEG C, and extruder rotating speed is 20-40r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317925.9A CN104133275B (en) | 2014-07-04 | 2014-07-04 | Elevator cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317925.9A CN104133275B (en) | 2014-07-04 | 2014-07-04 | Elevator cable |
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| CN104133275B true CN104133275B (en) | 2017-05-17 |
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| CN105068198A (en) * | 2015-07-20 | 2015-11-18 | 四川天邑康和通信股份有限公司 | Physical foaming coating layer tight tube fiber production process |
| EP3670600A1 (en) * | 2018-12-21 | 2020-06-24 | Borealis AG | Improved foaming behaviour of polymer compositions using passive nucleation |
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| CN2468136Y (en) * | 2000-01-10 | 2001-12-26 | 上海浦东斯派克电缆厂 | Rubber insulation rubber protective cover electric signal combined flexible cable |
| CN201804624U (en) * | 2010-08-10 | 2011-04-20 | 江苏河阳线缆有限公司 | Elevator cable containing fieldbus unit |
| CN202093846U (en) * | 2011-01-19 | 2011-12-28 | 江苏南瑞淮胜电缆有限公司 | Anti-crosstalk cable |
| CN103227011A (en) * | 2013-03-26 | 2013-07-31 | 江苏远洋东泽电缆股份有限公司 | Salt corrosion-resistant and torsion-resistant integral shielding telecommunication cable for offshore wind power and manufacturing method of integral shielding telecommunication cable |
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