CN105845263A - Novel computer transmission cable and manufacturing method therefor - Google Patents
Novel computer transmission cable and manufacturing method therefor Download PDFInfo
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- CN105845263A CN105845263A CN201510018467.3A CN201510018467A CN105845263A CN 105845263 A CN105845263 A CN 105845263A CN 201510018467 A CN201510018467 A CN 201510018467A CN 105845263 A CN105845263 A CN 105845263A
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Abstract
The invention discloses a novel computer transmission cable and a manufacturing method therefor. The cable comprises cable cores, an isolation layer, a first shielding layer, and a sheath layer, wherein the isolation layer, the first shielding layer and the sheath layer sequentially wrap the cable cores. Each cable core is twisted by a plurality of core units, and each core unit comprises two twisted insulating core wires and a second shielding layer wrapping two insulating core wires. The first shielding layer and the second shielding layer are respectively formed by the braiding of first copper wires, wherein the braiding density of the first copper wires is greater than 80%. The insulating core wires respectively comprise a conductor and an insulating layer wrapping the conductor. The conductors are respectively formed by the twisting of a plurality of second copper wires, wherein the diameter of each second wire is less than 0.18mm. The beneficial effects of the invention are that the insulating core wires employ a double-shielding mode: branch shielding and main shielding; the transmission speed of the cable is further increased; and the dielectric loss and attenuation of the cable are reduced.
Description
Technical field
The present invention relates to power cable technical field, more particularly, it relates to a kind of novel computer transmission
Cable and preparation method thereof.
Background technology
Along with the popularization and application of computer, computer network system in recent years, the performance to computer cable
Require more and more higher.And the computer cable transfer rate of routine is relatively slow, dielectric loss is relatively big, decay
Relatively big, can not meet the market demand to computer cable.Therefore, it is badly in need of developing a kind of novel calculating
Electric cable cable is to meet the demand in market, and this is the development trend of computer cable.The invention provides
A kind of Novel computer cable meets the market demand.
Summary of the invention
The technical problem to be solved in the present invention is, for drawbacks described above of the prior art, it is provided that a kind of
Novel computer transmission cable and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of novel computer transmission cable is provided, including cable inner core, and is coated on the most successively
Sealing coat, the first screen layer and restrictive coating outside described cable inner core；Described cable inner core is by many inner cores
Unit is stranded to be formed, and each described interior core unit all includes two mutual stranded insulation core wires, and cladding
Secondary shielding layer outside described two insulation core wires；Described first screen layer and described secondary shielding layer are equal
Being formed by the first proof copper-wire braided, the count of described first copper wire is more than 80%；Described insulation core wire bag
Including conductor and be coated on the insulating barrier outside described conductor, described conductor is less than by multifilament diameter
Second copper wire of 0.18mm is stranded to be formed.
In novel computer transmission cable of the present invention, described first copper wire is tinned copper wire, institute
State a diameter of the 0.08～0.15mm of tinned copper wire.
In novel computer transmission cable of the present invention, the thickness of described first screen layer more than or
Equal to 0.08mm, the thickness of described secondary shielding layer is more than or equal to 0.05mm.
In novel computer transmission cable of the present invention, described insulating barrier is by LDPE foaming materials
Being extruded into, the thickness of described insulating barrier is 0.3mm～0.8mm.
In novel computer transmission cable of the present invention, two described insulating core cabling spaces
Place has packed layer, so that described interior core unit constitutes rounded configurations, described packed layer uses flexible polyester-cotton blend
Cordage or the flexible stranded formation of reinforcement.
In novel computer transmission cable of the present invention, described cable inner core is by many interior core units
Form so that the stranded mode of concentric type is stranded.
In novel computer transmission cable of the present invention, described sealing coat by polyester belt wrapped and
Becoming, the thickness of described sealing coat is 0.03mm～0.08mm.
In novel computer transmission cable of the present invention, described restrictive coating is gathered by LSOH anti-flaming
Alkene composite is made, and described halogen-free and low-smoke flame-retardant polyolefin composite is included by mass fraction:
EVA30～50 parts, Mg (OH)2Or AL (OH)3150～180 parts, LDPE 35～50 parts, compatilizer
5～20 parts, synergist 2～4 parts and stabilizer 0.5～1 part.
The present invention also provides for a kind of novel computer transmission cable, including cable inner core, and depends on from inside to outside
Secondary sealing coat, the first screen layer and the restrictive coating being coated on outside described cable inner core；Described cable inner core by
Seven interior core units are twisted into rounded configurations in the stranded mode of concentric type, and each described interior core unit all includes
Two mutual stranded insulation core wires, and it is coated on the secondary shielding layer outside described two insulation core wires；Two
Described in root, insulating core cabling gap has packed layer, so that described interior core unit constitutes rounding knot
Structure；
Described first screen layer and described secondary shielding layer are formed by the first proof copper-wire braided, described first bronze medal
The count of silk is more than 80%；Described insulation core wire includes conductor and is coated on the insulation outside described conductor
Layer, described conductor is formed by multifilament diameter is stranded less than second copper wire of 0.18mm.
The present invention also provides for the preparation method of a kind of novel computer transmission cable, comprises the following steps:
S1, prepare conductor: by conductor material through wire drawing, stranded after, obtain conductor；
S2, extruded insulation layer: use plsitive mold to prepare by LDPE material in described conductor outer cladding
Insulating barrier, to obtain insulation core wire；
Core unit in S3, preparation: by stranded for two described insulation core wires, and at described two insulation core wires
Outer wrapped secondary shielding layer obtains interior core unit；
S4, prepare cable inner core: many described interior core units are obtained electricity so that the stranded mode of concentric type is stranded
Cable inner core；
S5, wrapped sealing coat: sealing coat is evenly coated at outside described cable inner core, described sealing coat by
Polyester belt is wrapped to be formed；
S6, extrude the first screen layer: the first screen layer will be formed by tinned copper wire braiding and be evenly coated at institute
State outside sealing coat；
S7, extrude restrictive coating: the mode using extruding will be by halogen-free and low-smoke flame-retardant polyolefin composite system
The restrictive coating obtained is evenly coated at outside described first screen layer.
In sum, implement novel computer transmission cable of the present invention and preparation method thereof, have following
Beneficial effect: first, insulation core wire outer cladding secondary shielding layer to realize separated-shielding to insulation core wire,
Simultaneously at sealing coat outer cladding the first screen layer to realize the total shielding to insulation core wire, by using split screen
Cover and always shield the mode of this dual shield, the transmission speed of cable can be increased further, reduce electricity
The dielectric loss of cable and decay.Secondly, the insulating barrier using LDPE material to make can increase cable
Transmission speed, reduces dielectric loss and decay, and LDPE material greatly improves the aging resistance of cable simultaneously
Property, improve the hot strength of cable, and enhance the overall flexibility of cable so that insulating barrier can
Preferably protection the second copper wire, it is to avoid destroy the insulating properties of cable because of wearout, causes safety hidden
Suffer from.3rd, conductor is stranding into by many soft copper wires, and this copper wire has higher monofilament percentage elongation and relatively
Little diameter so that the quantity making the copper wire needed for the conductor of same external diameter is much larger than institute in prior art
State the quantity of the blister copper silk of use, so can external force suffered by effective dispersed cable so that the present invention
The electric conductivity of conductor is strong, is not easy fracture without Hydrogen Brittleness Phenomena, has extremely strong bend resistance ability, at warp
Cross after exceedance comes and goes bending motion for million times and will not rupture, and then guarantee the physically and electrically performance of cable
Unaffected.Finally, restrictive coating uses halogen-free and low-smoke flame-retardant polyolefin composite, not only conforms with environmental protection
Requirement, meets outside general fire resistance, also has certain water resistance, can effectively prevent moisture content footpath
To penetrating into inside cable, thus extend the service life of drag chain cable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the novel computer transmission cable that one of present pre-ferred embodiments provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and
Embodiment, is further elaborated to the present invention.Should be appreciated that described herein being embodied as
Example only in order to explain the present invention, is not intended to limit the present invention.
As it is shown in figure 1, the novel computer transmission cable that present pre-ferred embodiments provides, this cable bag
Include cable inner core 4, and sealing coat the 3, first screen layer being coated on the most successively outside cable inner core 4
2 and restrictive coating 1.Wherein, cable inner core 4 is formed by many interior core units 40 are stranded, interior core unit 40
Including two mutual stranded insulation core wires 6, and the secondary shielding layer 5 being coated on outside two insulation core wires 6.
First screen layer 2 and secondary shielding layer 5 are formed by the first proof copper-wire braided, and the count of the first copper wire is big
In 80%.Further, insulation core wire 6 includes conductor 8 and the insulating barrier 9 being coated on outside conductor 8, leads
Body 8 is formed by multifilament diameter is stranded less than second copper wire of 0.18mm.
In the present embodiment, conductor 8 is formed by many second copper wire bundle strands, and this second copper wire is soft moving back
Fire copper free wire, owing to annealing copper free wire is the most oxygen-containing fine copper also not containing any deoxidizer residue,
Therefore its electricapparatus performance is the most excellent, and the monofilament percentage elongation of copper free wire is more than 20%, and monofilament extends
Rate height explanation copper wire is soft, ductility strong, and bend resistance ability is strong.
Being different from blister copper silk of the prior art, the filament diameter of the second copper wire used herein is respectively less than
0.2mm；Preferably, the filament diameter of the second copper wire is less than 0.18mm；In the present embodiment, the second copper wire
Filament diameter be 0.16mm.Owing in the present invention, the filament diameter of the second copper wire is little so that make same
The number of the required blister copper silk used during the quantity of the second copper wire is much larger than prior art needed for the conductor 8 of external diameter
Amount, so can external force suffered by effective dispersed cable, therefore, the electric conductivity of conductor 8 of the present invention
By force, it is not easy fracture without Hydrogen Brittleness Phenomena, there is extremely strong bend resistance ability, through exceedance million times
Will not rupture after coming and going bending motion, and then guarantee that the physically and electrically performance of cable is unaffected.
Additionally, use armour stranded mode bundle to be stranding into conductor 8 on above-mentioned many second copper wires, and use soft
Property top grade polyester fiber silk fill stranded gap.Wherein, have stronger in order to ensure prepared conductor 8
Intensity and bending ability, time stranded, the bundle strand twisting pitch of the second copper wire is less than or equal to the strand of the second copper wire
Close 10 times of external diameter, and the bundle strand direction of lay of many second copper wires is left-hand.
Further, the present embodiment uses plsitive mold to prepare by LDPE material in conductor 8 outer cladding
Insulating barrier 9, thus obtain insulation core wire 6.Owing to LDPE material has that density is low and good insulating etc.
Advantage, the insulating barrier 9 using this LDPE material to make can increase the transmission speed of cable, reduces
Dielectric loss and decay.The most this LDPE material greatly improves the ageing resistance of cable, improves
The hot strength of cable, and enhance the overall flexibility of cable so that insulating barrier 9 can preferably be protected
Protect the second copper wire, it is to avoid destroy the insulating properties of cable because insulating barrier 9 weares and teares, cause potential safety hazard.
Preferably, the thickness of the application insulating barrier 9 is 0.3mm～0.8mm, owing to LDPE material is made
Insulating barrier 9 there is stronger pliability and wearability so that the thickness of traditional polyvinyl chloride insulation layer
More than one times of herein described insulating barrier 9 thickness need to be reached, just can have and the application insulating barrier 9 phase
Same protected effect.In the present embodiment, the thickness of insulating barrier 9 is 0.5mm.
Further, the twisting mode that two insulation core wires 6 use armour formula is carried out stranded, and two
The outer wrapped secondary shielding layer 5 of root insulation core wire 6 is to obtain interior core unit 40.
Preferably, the direction of lay of two insulation core wires 6 is inwardly followed successively by " S "-" Z "-" S " by outer layer
Deng to, the twisting pitch of insulation core wire 6 less than or equal to 10 times of stranded external diameter of insulation core wire 6.
Preferably, flexible high-grade polyester-cotton blend fibre can be added in the stranded space between two insulation core wires 6
Dimension rope or flexible reinforcement (non-label on figure).This flexibility reinforcement be metal material that electric conductivity is low or
Nonmetallic materials are made, can not only be to insulation core wire 6 by adding flexible reinforcement in stranded space
To protective effect, it is to avoid insulation core wire 6 is damaged and destroys the insulating properties of cable, and can strengthen whole electricity
The ductility of cable and bend resistance ability.Additionally, by adding flexible high-grade polyester fiber in stranded space
Rope or flexible reinforcement, moreover it is possible to carry out accommodation according to the requirement that system is different, make insulation core wire 6
Constituting rounded configurations, thus maintain the overall structure of cable constant, this adaptive adjustment is simple
And enhance adaptation ability and the scope of application of cable greatly.
Preferably, secondary shielding layer 5 is evenly coated at outside two insulation core wires 6, wherein secondary shielding layer 5
Formed by the first proof copper-wire braided.In the present embodiment, the first copper wire is tinned copper wire, this tinned copper wire straight
Footpath is 0.08～0.15mm, and the count of tinned copper wire is more than 80%, preferably to protect insulating core
Line 6 is without damage, improves the service life of cable.Meanwhile, at insulation core wire 6 outer cladding secondary shielding
Layer 5, can increase the transmission speed of cable, reduces dielectric loss and the decay of cable.
Further, many interior core units 40 use the twisting mode of armour formula carry out stranded obtaining cable
Inner core 4.Wherein, the direction that interior core unit 40 is stranded is inwardly followed successively by " S "-" Z "-" S " by outer layer
Deng to, the twisting pitch of interior core unit 40 less than or equal to 15 times of stranded external diameter of interior core unit 40.
Preferably, it is also possible to the stranded space between many interior core units 40 is added flexible high-grade polyester-cotton blend
Cordage or flexible reinforcement (non-label on figure) destroy the exhausted of cable to avoid interior core unit 40 damaged
Edge, thus strengthen ductility and the bend resistance ability of whole cable.
Preferably, by adding flexible high-grade polyester fiber rope or flexible reinforcement in stranded space, make
Cable inner core 4 constitutes rounded configurations, thus maintains the overall structure of cable constant, this adaptive tune
Whole simple and enhance adaptation ability and the scope of application of cable greatly.In the present embodiment, inner core
The quantity of unit 40 is seven, is added with flexible high-grade polyester-cotton blend in the stranded space of seven interior core units 40
Cordage or flexible reinforcement, and make cable inner core 4 constitute rounded configurations.It is understood that this
Embodiment does not limit the particular number of interior core unit 40, and it can be multiple；Preferably, interior core unit
The quantity of 40 is four or seven.
Further, the outer peripheral face of cable inner core 4 is coated with sealing coat 3, this sealing coat 3 by polyester belt around
Bag forms, owing to polyester belt has a higher mechanical strength, remarkable insulating properties, moreover it is possible to high temperature resistant and
Low temperature resistant, therefore at the outer wrapped one layer of polyester belt of cable inner core 4, fixing cable inner core 4 can be played
Effect, thus ensure the mechanical performance of cable and stablizing of electrical property.In the present embodiment, sealing coat 3
Thickness is 0.03mm～0.08mm；Preferably, the thickness of sealing coat 3 is 0.055mm.
Further, the outer peripheral face of sealing coat 3 is uniformly coated with the first screen layer 2, to increase the biography of cable
Defeated speed, reduces dielectric loss and the decay of cable.Wherein, the first screen layer 2 is by the first proof copper-wire braided
Forming, the first copper wire is also tinned copper wire, a diameter of the 0.08 of this tinned copper wire～0.15mm, and tin-coated copper
The count of silk is more than 80%, without damage with more preferable protecting insulating layer 3, improves the use of cable
Life-span.In the present embodiment, the thickness of the first sealing coat 2 is 0.03mm～0.08mm；Preferably, first
The thickness of screen layer 2 is 0.055mm.
The present embodiment at insulation core wire 6 outer cladding secondary shielding layer 5 to realize split screen to insulation core wire 6
Cover, simultaneously at sealing coat 3 outer cladding the first screen layer 2 to realize the total shielding to insulation core wire 6, logical
Cross and use separated-shielding and total mode shielding this dual shield, the transmission speed of cable can be increased further
Degree, reduces dielectric loss and the decay of cable.
Further, outside the first screen layer 2, it is uniformly coated with restrictive coating 1, in the present embodiment, restrictive coating 1
By halogen-free and low-smoke flame-retardant polyolefin composite, to meet environmental requirement and meet the anti-flammability of cable and prevent
Aqueous.Wherein, halogen-free and low-smoke flame-retardant polyolefin composite is made up of the raw material of following parts by weight:
EVA30～50 parts, Mg (OH)2Or AL (OH)3150～180 parts, LDPE 35～50 parts, compatilizer 5～20
Part, synergist 2～4 parts and stabilizer 0.5～1 part.
Being different from traditional fire proofing, this halogen-free and low-smoke flame-retardant polyolefin composite is possible not only to meet
Outside the general fire resistance of cable, also there is certain water resistance, can effectively prevent water from radially penetrating into electricity
Inside cable.Additionally, this halogen-free and low-smoke flame-retardant polyolefin composite greatly improves the anti-ageing of cable
The property changed, and improve hot strength, enhance the overall flexibility of cable so that the first screen layer 2 energy
Enough transmission speeds preferably increasing cable, reduce dielectric loss and the decay of cable.Meanwhile, by this
The restrictive coating 1 that halogen-free and low-smoke flame-retardant polyolefin composite prepares can preferably protect insulation core wire 6, keeps away
Exempt to destroy the insulating properties of cable because restrictive coating 1 weares and teares, thus cause potential safety hazard.
In the present embodiment, the thickness of restrictive coating 1 is 0.6mm～1mm, due to halogen-free and low-smoke flame-retardant polyolefin
The restrictive coating 1 that composite is made has stronger pliability and wearability so that traditional polrvinyl chloride
The thickness of restrictive coating need to reach more than a times of herein described restrictive coating 1 thickness, just can have and this Shen
Please the identical protected effect of restrictive coating 1.Preferably, the thickness of restrictive coating 1 is 0.8mm.
The application also provides for a kind of novel computer transmission cable, and described cable includes cable inner core 4, and by
Interior to sealing coat the 3, first screen layer 2 being coated on successively outside cable inner core 4 outward and restrictive coating 1.Wherein,
Cable inner core 4 is twisted into rounded configurations, described inner core by seven interior core units 40 in the stranded mode of concentric type
Unit 40 includes two mutual stranded insulation core wires 6, and is coated on second outside two insulation core wires 6
Screen layer 5, the stranded gap of two insulation core wires 6 has packed layer 7, so that interior core unit 40 structure
Become rounded configurations.
Further, the first screen layer 2 and secondary shielding layer 5 are formed by the first proof copper-wire braided, the first bronze medal
The count of silk is more than 80%；Insulation core wire 6 includes conductor 8 and the insulating barrier 9 being coated on outside conductor 8,
Conductor 8 is formed by multifilament diameter is stranded less than second copper wire of 0.18mm.
Preferably, the first copper wire is tinned copper wire, a diameter of the 0.08 of this tinned copper wire～0.15mm, and plating
The count of stannum copper wire is more than 80%, without damage with preferably protection insulation core wire 6, improves cable
Service life.
The present embodiment at insulation core wire 6 outer cladding secondary shielding layer 5 to realize split screen to insulation core wire 6
Cover, simultaneously at sealing coat 3 outer cladding the first screen layer 2 to realize the total shielding to insulation core wire 6, logical
Cross and use separated-shielding and total mode shielding this dual shield, the transmission speed of cable can be increased further
Degree, reduces dielectric loss and the decay of cable.
The application also provides for the preparation method of a kind of novel computer transmission cable, because prepared by this cable
Process control condition in journey is prior art, does not repeats them here.Wherein, described preparation method includes
Following steps:
S1, prepare conductor: by conductor material through wire drawing, stranded after, obtain conductor 8.
Concrete, the preparation of conductor 8 includes three sub-steps: select materials, wire drawing and stranded.Select materials: root
The conductor material used is selected, as selected electrician's round copper rod as conductor material according to the requirement of the different cable of preparation
Material；Wire drawing: conductor material carries out wire drawing, annealing obtains copper free wire of annealing, this annealing anaerobic
A diameter of 0.15mm of copper wire；Stranded: annealing copper free wire wire drawing obtained uses the stranded mode of armour
Bundle is stranding into conductor 8.
S2, extruded insulation layer: use plsitive mold to prepare by LDPE material in conductor 8 outer cladding
Insulating barrier 9, to obtain insulation core wire 6.
Core unit in S3, preparation: by stranded for two insulation core wires 6, and two insulation core wires 6 outer around
Bag secondary shielding layer 5 obtains interior core unit 40.
S4, prepare cable inner core: many interior core units 40 are obtained cable so that the stranded mode of concentric type is stranded
Inner core 4.
S5, wrapped sealing coat: being evenly coated at outside cable inner core 4 by sealing coat 3, sealing coat 3 is by gathering
Ester band is wrapped to be formed.
S6, extrude the first screen layer: the first screen layer 2 will be formed by tinned copper wire braiding and be evenly coated at
Outside sealing coat 3.
S7, extrude restrictive coating: the mode using extruding will be by halogen-free and low-smoke flame-retardant polyolefin composite system
The restrictive coating 1 obtained is evenly coated at outside the first screen layer 2；Concrete, configuration includes this low smoke, zero halogen
The raw material of fire retardant polyolefin composite material..
Embodiment 1
S1, prepare conductor: by conductor material through wire drawing, stranded after, obtain conductor 8；
S2, extruded insulation layer: use plsitive mold to prepare by LDPE material in conductor 8 outer cladding
Insulating barrier 9, to obtain insulation core wire 6；
Core unit in S3, preparation: by stranded for two insulation core wires 6, and two insulation core wires 6 outer around
Bag secondary shielding layer 5 obtains interior core unit 40；
S4, prepare cable inner core: many interior core units 40 are obtained cable so that the stranded mode of concentric type is stranded
Inner core 4；
S5, wrapped sealing coat: being evenly coated at outside cable inner core 4 by sealing coat 3, sealing coat 3 is by gathering
Ester band is wrapped to be formed；
S6, extrude the first screen layer: the first screen layer 2 will be formed by tinned copper wire braiding and be evenly coated at
Outside sealing coat 3；
S7, extrude restrictive coating: the mode using extruding will be by halogen-free and low-smoke flame-retardant polyolefin composite system
The restrictive coating 1 obtained is evenly coated at outside the first screen layer 2；
Wherein, EVA30 part, AL (OH)3180 parts, LDPE 50 parts, compatilizer 20 parts, synergist
2 parts and stabilizer 1 part.
Embodiment 2
S1, prepare conductor: by conductor material through wire drawing, stranded after, obtain conductor 8；
S2, extruded insulation layer: use plsitive mold to prepare by LDPE material in conductor 8 outer cladding
Insulating barrier 9, to obtain insulation core wire 6；
Core unit in S3, preparation: by stranded for two insulation core wires 6, and two insulation core wires 6 outer around
Bag secondary shielding layer 5 obtains interior core unit 40；
S4, prepare cable inner core: many interior core units 40 are obtained cable so that the stranded mode of concentric type is stranded
Inner core 4；
S5, wrapped sealing coat: being evenly coated at outside cable inner core 4 by sealing coat 3, sealing coat 3 is by gathering
Ester band is wrapped to be formed；
S6, extrude the first screen layer: the first screen layer 2 will be formed by tinned copper wire braiding and be evenly coated at
Outside sealing coat 3；
S7, extrude restrictive coating: the mode using extruding will be by halogen-free and low-smoke flame-retardant polyolefin composite system
The restrictive coating 1 obtained is evenly coated at outside the first screen layer 2；
Wherein, EVA50 part, AL (OH)3150 parts, LDPE 40 parts, compatilizer 10 parts, synergist
2 parts and stabilizer 0.8 part.
Embodiment 3
S1, prepare conductor: by conductor material through wire drawing, stranded after, obtain conductor 8；
S2, extruded insulation layer: use plsitive mold to prepare by LDPE material in conductor 8 outer cladding
Insulating barrier 9, to obtain insulation core wire 6；
Core unit in S3, preparation: by stranded for two insulation core wires 6, and two insulation core wires 6 outer around
Bag secondary shielding layer 5 obtains interior core unit 40；
S4, prepare cable inner core: many interior core units 40 are obtained cable so that the stranded mode of concentric type is stranded
Inner core 4；
S5, wrapped sealing coat: being evenly coated at outside cable inner core 4 by sealing coat 3, sealing coat 3 is by gathering
Ester band is wrapped to be formed；
S6, extrude the first screen layer: the first screen layer 2 will be formed by tinned copper wire braiding and be evenly coated at
Outside sealing coat 3；
S7, extrude restrictive coating: the mode using extruding will be by halogen-free and low-smoke flame-retardant polyolefin composite system
The restrictive coating 1 obtained is evenly coated at outside the first screen layer 2；
Wherein, EVA 40 parts, Mg (OH)2160 parts, LDPE 40 parts, compatilizer 10 parts, synergist
2 parts and stabilizer 0.5 part.
In sum, implement novel computer transmission cable of the present invention and preparation method thereof, have following
Beneficial effect:
(1) insulation core wire outer cladding secondary shielding layer is to realize separated-shielding to insulation core wire, simultaneously every
Absciss layer outer cladding the first screen layer is to realize the total shielding to insulation core wire, by using separated-shielding and total screen
Cover the mode of this dual shield, the transmission speed of cable can be increased further, reduce the dielectric of cable
Loss and decay.
(2) insulating barrier using LDPE material to make can increase the transmission speed of cable, reduces dielectric
Loss and decay, LDPE material greatly improves the ageing resistance of cable simultaneously, improves drawing of cable
Stretch intensity, and enhance the overall flexibility of cable so that insulating barrier can preferably protect the second copper wire,
Avoid destroying because of wearout the insulating properties of cable, cause potential safety hazard.
(3) conductor is stranding into by many soft copper wires, and this copper wire has higher monofilament percentage elongation and less
Diameter so that make the quantity of copper wire needed for the conductor of same external diameter much larger than described in prior art
The quantity of blister copper silk used, so can external force suffered by effective dispersed cable so that the present invention leads
The electric conductivity of body is strong, is not easy fracture without Hydrogen Brittleness Phenomena, has extremely strong bend resistance ability, is passing through
Exceedance will not rupture after coming and going bending motion for million times, and then guarantees the physically and electrically performance of cable not
Impacted.
(5) restrictive coating uses halogen-free and low-smoke flame-retardant polyolefin composite, not only conforms with environmental requirement, full
Outside the fire resistance that foot is general, also there is certain water resistance, can effectively prevent moisture content from radially penetrating into electricity
Inside cable, thus extend the service life of drag chain cable.
Although the present invention is illustrated by specific embodiment, it will be appreciated by those skilled in the art that,
Without departing from the present invention, it is also possible to the present invention is carried out various conversion and equivalent substitutes.
It addition, for particular condition or material, the present invention can be made various amendment, without deviating from the present invention's
Scope.Therefore, the present invention is not limited to disclosed specific embodiment, and should include falling into the present invention
Whole embodiments in right.
Claims (10)
1. a novel computer transmission cable, it is characterised in that include cable inner core (4), and by
In to outer be coated on successively the outer sealing coat (3) of described cable inner core (4), the first screen layer (2) and
Restrictive coating (1)；Each described cable inner core (4) is formed by many interior core units (40) are stranded,
Described interior core unit (40) includes two mutual stranded insulation core wires (6), and is coated on described two
Insulation core wire (6) secondary shielding layer (5) outward；Described first screen layer (2) and described secondary shielding
Layer (5) is formed by the first proof copper-wire braided, and the count of described first copper wire is more than 80%；Described absolutely
Edge heart yearn (6) includes conductor (8) and is coated on described conductor (8) insulating barrier (9) outward, described
Conductor (8) is formed by multifilament diameter is stranded less than second copper wire of 0.18mm.
Novel computer transmission cable the most according to claim 1, it is characterised in that described first
Copper wire is tinned copper wire, a diameter of the 0.08 of described tinned copper wire～0.15mm.
Novel computer transmission cable the most according to claim 1, it is characterised in that described first
The thickness of screen layer (2) is more than or equal to 0.08mm, and the thickness of described secondary shielding layer (5) is more than
Or equal to 0.05mm.
Novel computer transmission cable the most according to claim 1, it is characterised in that described insulation
Layer (9) is extruded into by LDPE foaming materials, and the thickness of described insulating barrier (9) is 0.3mm
～0.8mm.
Novel computer transmission cable the most according to claim 1, it is characterised in that described in two
The stranded gap of insulation core wire (6) has packed layer (7), so that described interior core unit (40) structure
Becoming rounded configurations, described packed layer (7) uses flexible polyester fiber rope or the flexible stranded formation of reinforcement.
Novel computer transmission cable the most according to claim 1, it is characterised in that described cable
Inner core (4) is formed so that the stranded mode of concentric type is stranded by many interior core units (40).
Novel computer transmission cable the most according to claim 1, it is characterised in that described isolation
Layer (3) is formed by polyester belt is wrapped, and the thickness of described sealing coat (3) is 0.03mm～0.08mm.
Novel computer transmission cable the most according to claim 1, it is characterised in that described sheath
Layer (1) is made up of halogen-free and low-smoke flame-retardant polyolefin composite, and described halogen-free and low-smoke flame-retardant polyolefin is combined
Material is included by mass fraction: EVA30～50 parts, Mg (OH)2Or AL (OH)3150～180 parts,
LDPE 35～50 parts, compatilizer 5～20 parts, synergist 2～4 parts and stabilizer 0.5～1 part.
9. a novel computer transmission cable, it is characterised in that include cable inner core (4), and by
In to outer be coated on successively the outer sealing coat (3) of described cable inner core (4), the first screen layer (2) and
Restrictive coating (1)；Described cable inner core (4) by seven interior core units (40) in the stranded mode of concentric type
Being twisted into rounded configurations, each described interior core unit (40) all includes two mutual stranded insulation core wires
, and be coated on described two insulation core wires (6) secondary shielding layer (5) outward (6)；Two described absolutely
The stranded gap of edge heart yearn (6) has packed layer (7), so that described interior core unit (40) is constituted
Rounded configurations；
Described first screen layer (2) and described secondary shielding layer (5) are formed by the first proof copper-wire braided,
The count of described first copper wire is more than 80%；Described insulation core wire (6) includes conductor (8) and bag
Overlaying on described conductor (8) insulating barrier (9) outward, described conductor (8) is less than 0.18mm by multifilament diameter
The second copper wire stranded form.
10. the preparation method of a novel computer transmission cable, it is characterised in that include following step
Rapid:
S1, prepare conductor: by conductor material through wire drawing, stranded after, obtain conductor (8)；
S2, extruded insulation layer: use plsitive mold in described conductor (8) outer cladding by LDPE material
The insulating barrier (9) prepared, to obtain insulation core wire (6)；
Core unit in S3, preparation: by stranded for two described insulation core wires (6), and thoroughly do away with edge described two
Heart yearn (6) the most wrapped secondary shielding layer (5) obtains interior core unit (40)；
S4, prepare cable inner core: by stranded in the stranded mode of concentric type for many described interior core units (40)
Obtain cable inner core (4)；
S5, wrapped sealing coat: sealing coat (3) is evenly coated at described cable inner core (4) outward, institute
State sealing coat (3) to be formed by polyester belt is wrapped；
S6, extrude the first screen layer: the first screen layer (2) will be formed by tinned copper wire braiding and uniformly be coated with
At described sealing coat (3) outward；
S7, extrude restrictive coating: the mode using extruding will be by halogen-free and low-smoke flame-retardant polyolefin composite system
The restrictive coating (1) obtained is evenly coated at described first screen layer (2) outward.
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| CN201510018467.3A CN105845263B (en) | 2015-01-14 | 2015-01-14 | Computer transmission cable and preparation method thereof |
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| CN201510018467.3A CN105845263B (en) | 2015-01-14 | 2015-01-14 | Computer transmission cable and preparation method thereof |
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| CN105845263B CN105845263B (en) | 2017-11-03 |
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| CN109994280A (en) * | 2017-12-29 | 2019-07-09 | 深圳市联嘉祥科技股份有限公司 | A kind of novel portable cable |
| CN110767371A (en) * | 2019-11-04 | 2020-02-07 | 安徽恒晶电缆集团有限公司 | High-temperature computer cable and processing technology thereof |
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| Publication number | Publication date |
|---|---|
| CN105845263B (en) | 2017-11-03 |
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