CN106571192A - Conductor preformation fireproof type cable and preparation method thereof - Google Patents
Conductor preformation fireproof type cable and preparation method thereof Download PDFInfo
- Publication number
- CN106571192A CN106571192A CN201610995375.5A CN201610995375A CN106571192A CN 106571192 A CN106571192 A CN 106571192A CN 201610995375 A CN201610995375 A CN 201610995375A CN 106571192 A CN106571192 A CN 106571192A
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- Prior art keywords
- conductor
- parts
- pretwist
- core
- mica tape
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a conductor preformation fireproof type cable and a preparation method thereof; the method directly splice spiral pre-twisted conductors so as to form a wire core; the pre-twisted conductor is in a spiral shape before cabling, and cannot have deformation trends, so the stress between conductors after cabling is small, thus allowing the cable to have high structure compact level and shape stability, and preventing deformation; in addition, the stress between pre-twisted conductors is small, so the structure (like a mica tape) between the pre-twisted conductors is hard to be cracked and broken by force, thus ensuring the cable to have high flame retardation and insulation effects.
Description
Technical field
The present invention relates to a kind of fire safe type cable, and in particular to a kind of conductor preforming fire safe type cable and preparation method.
Background technology
The life that the invention of electricity gives people brings various facilities, and for example, electricity can be used to illuminate, cook, takes
Various machinery equipments motions are warmed up or are driven so as to realize mechanization production etc., therefore in the life of modernization, the own Jing of people
Electricity is be unable to do without, wherein electric wire equally plays indispensable effect as the transmission carrier of electricity.
In electric power and transmission line of electricity industry, low tension cable frequently with multiple conductor strands making, outside conductor generally
The materials such as mica tape, alkali-free glass silk ribbon can be enclosed with, to be insulated, fire-retardant and other effects.But after conductor strand stranding, mutually
Between often have stronger stress（Resilience force）.The especially profile conductor such as sector, tile-type, have after twisting stranding diffusion,
The trend of deformation, the structural stability for making cable overall is poor, compact conformation degree is not enough and be easily deformed, electric conductivity declines.
At the same time, between the configuration conductor between conductor in the presence of stress, easily burst apart, it is damaged, come off, lose flame retardant effect or even make
The rate that punctures of cable substantially rises.
The content of the invention
In view of this, one kind of the present invention can effectively eliminate stress between conductor, compact conformation and on-deformable cable.
The purpose of the present invention is achieved through the following technical solutions：A kind of conductor preforming fire safe type cable, including core, institute
Stating core includes many conductors, and the conductor is pretwist conductor；The pretwist conductor is formed by many conductor monofilament are stranded；It is described
Pretwist conductor is the spiral type rotated around the axle center of core；The lay ratio of many conductors is identical；Described many are led
Body splices centered on the axle center of core, stranded form；Many its edge of pretwist conductor are parallel to each other.
In prior art, the conductor for constituting core is line style conductor, just by stranded formation spiral in cabling procedure
Structure, conductor have the trend for recovering line style and produce stress.And in the present invention, line is spliced into using the pretwist conductor of spiral directly
Core, pretwist conductor are spiral type, the trend not deformed before stranding, therefore the stress after stranding between its conductor is less,
Finally make cable that there is higher compact conformation degree and shape stability, be unlikely to deform.Further, since between pretwist conductor stress compared with
Little, between pretwist conductor structure（Such as mica tape）Be difficult stress burst apart, it is damaged, it is ensured that the cable of the present invention has higher resistance
Combustion, insulation effect.
Further, the lay ratio of the pretwist conductor is 40～55.
In field of cables, the lay ratio of stranding is bigger, and the suppleness of cable is better, but the resilience stress of conductor is also by phase
Should increase.As the present invention adopts pretwist conductor stranding, the resilience stress of conductor is less, therefore the lay ratio of cable can reach
40～55.Due to the present invention pretwist conductor between stress it is relatively low, therefore cable can arrange higher lay ratio, not only with compared with
Excellent suppleness, at the same the compact conformation degree that cable can be kept higher and it is not easily damaged.
Further, mica tape is also surrounded with outside the conductor.
Further, the thickness of the mica tape is 0.6-1.0mm.
As the stress of pretwist conductor in the present invention is relatively low, mica tape stress is less, thus can pretwist conductor it is outer around
The higher mica tape of bag thickness, while cable-flame retardant, insulation effect is strengthened, mica tape remains to maintain the complete of its structure
Degree, keeps the reliability of cable work.
Further, the gap in the core between the mica tape of many conductors is also filled with flame-retardant filler；Institute
Stating core also includes the wrapped alkali-free glass silk ribbon on the outside of mica tape successively；The flame-retardant filler is flame resistant filler rope.Institute
State mica tape, alkali-free glass silk ribbon, flame resistant filler rope and can select any one commercially available prod realization.
Preferably, ceramic silicone band, corrugated copper tube, oversheath are also surrounded with outside the core successively.
The ceramic silicone band, corrugated copper tube, oversheath can select any one prior art and realize.
Preferably, enhancing coating is coated with the inside of the mica tape；Described its raw material of enhancing coating includes by weight
50～60 parts of modified epoxy acrylic ester, 48～60 parts of epoxy acrylate, 15～25 parts of urethane acrylate, polyester modification
40～45 parts of acrylate, 11～21 parts of Dipentaerythritol Pentaacrylate, 12～25 parts of tripropylene glycol diacrylate, auxiliary agent
7～8 parts, 1～8 part of light trigger, 32～39 parts of diluent, 2～4 parts of levelling agent；The auxiliary agent is by by weight the three of 1-3%
The butylene glycol composition of Phenylphosphine, the gamma-butyrolacton of 2-5% and surplus.
The modified epoxy acrylic ester selects commercially available prod, the such as permanent light of Jiangmen city Heng Guang new material company limited
6101st, permanent light 6106, permanent light 6116 or permanent light 6118.Epoxy acrylate is by epoxy resin and acrylic or methacrylic acid
Jing esterification by ring opening and be obtained, be commercially available prod.Contain acrylic-functional and carbamic acid in the molecule of urethane acrylate
Ester bond, the adhesive after solidification have the high-wearing feature of polyurethane, adhesion, pliability, high-peeling strength and excellent resistance to low
The remarkable optical property of warm nature energy and polyacrylate and weatherability, are a kind of radiation curing materials of high comprehensive performance.
Permanent light 7402 or permanent light 7402-6 from Jiangmen city Heng Guang new material company limited.Dipentaerythritol Pentaacrylate, 3 third
Omega-diol diacrylate, light trigger, diluent, levelling agent are commercially available prod.The special present invention from triphenylphosphine,
The auxiliary agent of gamma-butyrolacton, butylene glycol composition, triphenylphosphine, gamma-butyrolacton can effectively improve the anti-breakdown performance of mica tape.
Preferably, described its section of pretwist conductor is fan-shaped or tile-type.
The present invention also provides a kind of method for improving construction of cable compactness, avoiding cable from producing stress between conductor：One
Plant the preparation method of conductor preforming fire safe type cable, including following operation：
S1. conductor monofilament is twisted into into conductor；
S2. conductor is carried out into pretwist according to the lay ratio of stranding, obtains the spiral pretwist rotated around an axle center and lead
Body；
S3. in the outer wrapped mica tape of pretwist conductor for passing through pretwist；
S4. in the wrapped alkali-free glass silk ribbon in outside of mica tape；
S5. by many pretwist conductors centered on the axle center of its pretwist, mutual side is affixed twisted synthesizing cable after splicing, obtains line
Core；
S6. ceramic silicone band, corrugated copper tube, oversheath are sequentially formed outside core, obtains the conductor preforming fire safe type
Cable.
Further, the centrally disposed flame resistant filler rope of many pretwist conductors is additionally included in the S5；The mica tape
Inner side is coated with enhancing coating；Described its raw material of enhancing coating includes 50～60 parts of modified epoxy acrylic ester, ring by weight
48～60 parts of oxypropylene acid esters, 15～25 parts of urethane acrylate, 40～45 parts of polyester modification acrylate, dipentaerythritol
Five 11～21 parts of acrylate, 12～25 parts of tripropylene glycol diacrylate, 7～8 parts of auxiliary agent, 1～8 part of light trigger, dilution
32～39 parts of agent, 2～4 parts of levelling agent；The auxiliary agent by the triphenylphosphine of 1-3% by weight, the gamma-butyrolacton of 2-5% and
The butylene glycol composition of surplus；The enhancing dope layer its preparation method is to add reaction to hold by respective parts by weight each component
In device, ultrasonic disperse was heated to 75 DEG C～90 DEG C after 60～90 minutes, and 3 .5～5 .5 hours of high-speed stirred dispersion obtain former
Slurry；Oleo stock is coated in into side of the mica tape towards core, with 110mW/cm2 Ultraviolet light, irradiation 75s make paint solidification,
Both.
Description of the drawings
Fig. 1 is the sectional drawing of cable of the present invention.
Fig. 2 is the partial enlarged drawing of cable of the present invention.
Fig. 3 is the structural representation of the core of cable of the present invention.
Fig. 4 is the sectional drawing of another embodiment of the present invention cable.
Fig. 5 is the partial enlarged drawing of cable of the present invention.
Specific embodiment
For the ease of it will be appreciated by those skilled in the art that making to the present invention further in detail below in conjunction with accompanying drawing and embodiment
It is thin to describe：
Embodiment 1
The present embodiment provides a kind of conductor preforming fire safe type cable, such as Fig. 1 and Fig. 2, Fig. 3, including core 1, the core bag
4 conductors 2 are included, the conductor is pretwist conductor；Described its section of pretwist conductor is sector；The pretwist conductor is by many conductors
Monofilament is stranded to be formed；The pretwist conductor is the spiral type rotated around the axle center of core；The lay ratio of 4 conductors
It is identical；4 conductors splice centered on the axle center of core, stranded form；4 its edges of pretwist conductor are parallel to each other.
Further, the lay ratio of the pretwist conductor is 45.
Further, mica tape 21 is also surrounded with outside the conductor.
Further, the thickness of the mica tape 21 is 0.6mm.
Further, the gap in the core between the mica tape of many conductors is also filled with flame-retardant filler；Institute
Stating core also includes the wrapped alkali-free glass silk ribbon 22 on the outside of mica tape successively；The flame-retardant filler is flame resistant filler rope.
Preferably, ceramic silicone band 3, corrugated copper tube 4, oversheath 5 are also surrounded with outside the core successively.
Embodiment 2
The present embodiment provides a kind of conductor preforming fire safe type cable, such as Fig. 3, Fig. 4, including core, and the core includes that 4 are led
Body, the conductor are pretwist conductor；Described its section of pretwist conductor is tile-type；The pretwist conductor is stranded by many conductor monofilament
Form；The pretwist conductor is the spiral type rotated around the axle center of core；The lay ratio of 3 conductors is identical；Institute
State 3 conductors to splice centered on the axle center of core, stranded form；3 its edges of pretwist conductor are parallel to each other.Particularly preferably
, it is circular conductor that there be a section at the center of the present embodiment core.
Further, the lay ratio of the pretwist conductor is 40.
Further, mica tape is also surrounded with outside the conductor.
Further, the thickness of the mica tape is 0.8mm.
Further, the gap in the core between the mica tape of many conductors is also filled with flame-retardant filler；Institute
Stating core also includes the wrapped alkali-free glass silk ribbon on the outside of mica tape successively；The flame-retardant filler is flame resistant filler rope.
Preferably, ceramic silicone band, corrugated copper tube, oversheath are also surrounded with outside the core successively.
Embodiment 3
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and the core includes 4 conductors, described to lead
Body is pretwist conductor；Described its section of pretwist conductor is tile-type；The pretwist conductor is formed by many conductor monofilament are stranded；It is described
Pretwist conductor is the spiral type rotated around the axle center of core；The lay ratio of 4 conductors is identical；4 conductors
Centered on the axle center of core splicing, stranded form；4 its edges of pretwist conductor are parallel to each other.
Further, the lay ratio of the pretwist conductor is 55.
Further, mica tape is also surrounded with outside the conductor.
Further, the thickness of the mica tape is 1.0mm.
Further, the gap in the core between the mica tape of many conductors is also filled with flame-retardant filler；Institute
Stating core also includes the wrapped alkali-free glass silk ribbon on the outside of mica tape successively.
The present embodiment also provides the preparation method of above-mentioned conductor preforming fire safe type cable, including following operation：
S1. conductor monofilament is twisted into into conductor；
S2. conductor is carried out into pretwist according to the lay ratio of stranding, obtains the spiral pretwist rotated around an axle center and lead
Body；
S3. in the outer wrapped mica tape of pretwist conductor for passing through pretwist；
S4. in the wrapped alkali-free glass silk ribbon in outside of mica tape；
S5. by many pretwist conductors centered on the axle center of its pretwist, mutual side is affixed twisted synthesizing cable after splicing, obtains line
Core；
S6. ceramic silicone band, corrugated copper tube, oversheath are sequentially formed outside core, obtains the conductor preforming fire safe type
Cable.
Further, the centrally disposed flame resistant filler rope of many pretwist conductors is additionally included in the S5.
Specifically, S5 is that pretwist conductor draw drum is positioned on disk winch rotary creel stand；Flame resistant filler rope is put
Rotary creel stand the rotary creel stand put less than milliken conductor draw drum of size, gasket for packing is placed in the middle, and pretwist conductor encloses to be filled out
The direction twisted synthesizing cable restricted by pretwist is filled, core is formed
Embodiment 4
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and the core includes 3 conductors, described to lead
Body is pretwist conductor；Described its section of pretwist conductor is sector；The pretwist conductor is formed by 14-61 root conductor monofilament is stranded；
The pretwist conductor is the spiral type rotated around the axle center of core；The lay ratio of 3 conductors is identical；Described 3
Conductor splices centered on the axle center of core, stranded form；Many its edge of pretwist conductor are parallel to each other.
Further, the lay ratio of the pretwist conductor is 50.
Further, mica tape is also surrounded with outside the conductor.
Further, the thickness of the mica tape is 1.0mm.
Further, the core also includes the wrapped alkali-free glass silk ribbon on the outside of mica tape successively.
Preferably, ceramic silicone band, corrugated copper tube, oversheath are also surrounded with outside the core successively.
Preferably, described its section of pretwist conductor is fan-shaped or tile-type.
Embodiment 5
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and its construction is consistent with embodiment 1.
Preferably, enhancing coating is coated with the present embodiment on the inside of mica tape；Described its raw material of enhancing coating is by weight
Meter includes 55 parts of modified epoxy acrylic ester, 55 parts of epoxy acrylate, 20 parts of urethane acrylate, polyester modification acrylic acid
43 parts of ester, 15 parts of Dipentaerythritol Pentaacrylate, 20 parts of tripropylene glycol diacrylate, 7.5 parts of auxiliary agent, 6 parts of light trigger,
34 parts of diluent, 3 parts of levelling agent；The auxiliary agent is by by weight 1.6% triphenylphosphine, 4.1% gamma-butyrolacton and surplus
Butylene glycol composition.
In the present embodiment, light trigger is 1- hydroxycyclohexyl phenyl ketones, 2- methyl -2- (4- morpholinyls) -1- [4-
(methyl mercapto) phenyl] -1- acetone, 2- hydroxy-2-methyl -1- [4- (2- hydroxyl-oxethyls) phenyl] -1- acetone, benzoin isobutyl
One or more in propyl ether or isopropyl thioxanthone.The diluent is tetramethylol methane tetraacrylate, tetramethylolmethane six
One or more in acrylate, 2-(Acryloyloxy)ethanol, hydroxyethyl methylacrylate, levelling agent is acrylic ester type levelling agent.
The enhancing dope layer its preparation method is that each component is added in reaction vessel by respective parts by weight, ultrasound point
After dissipating 60～90 minutes, 75 DEG C～90 DEG C are heated to, 3 .5～5 .5 hours of high-speed stirred dispersion obtain oleo stock；Oleo stock is coated
Mica tape towards core side, with 110mW/cm2 Ultraviolet light, irradiation 75s makes paint solidification, both.
Embodiment 6
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and its construction is consistent with embodiment 1.
Preferably, enhancing coating is coated with the present embodiment on the inside of mica tape；Described its raw material of enhancing coating is by weight
Meter includes 60 parts of modified epoxy acrylic ester, 48 parts of epoxy acrylate, 25 parts of urethane acrylate, polyester modification acrylic acid
40 parts of ester, 21 parts of Dipentaerythritol Pentaacrylate, 12 parts of tripropylene glycol diacrylate, 8 parts of auxiliary agent, 1 part of light trigger are dilute
Release 39 parts of agent, 2 parts of levelling agent；Butylene of the auxiliary agent by by weight 3% triphenylphosphine, 2% gamma-butyrolacton and surplus
Glycol is constituted.
The enhancing dope layer its preparation method is that each component is added in reaction vessel by respective parts by weight, ultrasound point
After dissipating 90 minutes, 75 DEG C are heated to, high-speed stirred disperses 5 .5 hours to obtain oleo stock；Oleo stock is coated in into mica tape towards core
Side, with 110mW/cm2 Ultraviolet light, irradiation 75s makes paint solidification, both.
Embodiment 7
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and its construction is consistent with embodiment 1.
Preferably, enhancing coating is coated with the present embodiment on the inside of mica tape；Described its raw material of enhancing coating is by weight
Meter includes 50 parts of modified epoxy acrylic ester, 60 parts of epoxy acrylate, 15 parts of urethane acrylate, polyester modification acrylic acid
45 parts of ester, 11 parts of Dipentaerythritol Pentaacrylate, 25 parts of tripropylene glycol diacrylate, 7 parts of auxiliary agent, 8 parts of light trigger are dilute
Release 32 parts of agent, 4 parts of levelling agent；Butylene of the auxiliary agent by by weight 1% triphenylphosphine, 5% gamma-butyrolacton and surplus
Glycol is constituted.
The enhancing dope layer its preparation method is that each component is added in reaction vessel by respective parts by weight, ultrasound point
After dissipating 60 minutes, 90 DEG C are heated to, high-speed stirred disperses 3 .5 hours to obtain oleo stock；Oleo stock is coated in into mica tape towards core
Side, with 110mW/cm2 Ultraviolet light, irradiation 75s makes paint solidification, both.
Embodiment 8
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and its construction is consistent with embodiment 1.
Preferably, enhancing coating is coated with the present embodiment on the inside of mica tape；Described its raw material of enhancing coating is by weight
Meter includes 51 parts of modified epoxy acrylic ester, 50 parts of epoxy acrylate, 19 parts of urethane acrylate, polyester modification acrylic acid
43 parts of ester, 20 parts of Dipentaerythritol Pentaacrylate, 15 parts of tripropylene glycol diacrylate, 6 parts of light trigger, diluent 35
Part, 3 parts of levelling agent.
Embodiment 9
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and its construction is consistent with embodiment 1.
Preferably, enhancing coating is coated with the present embodiment on the inside of mica tape；Described its raw material of enhancing coating is by weight
Meter includes 55 parts of modified epoxy acrylic ester, 55 parts of epoxy acrylate, 20 parts of urethane acrylate, polyester modification acrylic acid
43 parts of ester, 15 parts of Dipentaerythritol Pentaacrylate, 20 parts of tripropylene glycol diacrylate, 7.5 parts of auxiliary agent, 6 parts of light trigger,
34 parts of diluent, 3 parts of levelling agent；The auxiliary agent is made up of by weight 1.6% triphenylphosphine and 8.4% butylene glycol.
Embodiment 10
The present embodiment provides a kind of conductor preforming fire safe type cable, including core, and its construction is consistent with embodiment 1.
Preferably, enhancing coating is coated with the present embodiment on the inside of mica tape；Described its raw material of enhancing coating is by weight
Meter includes 55 parts of modified epoxy acrylic ester, 55 parts of epoxy acrylate, 20 parts of urethane acrylate, polyester modification acrylic acid
43 parts of ester, 15 parts of Dipentaerythritol Pentaacrylate, 20 parts of tripropylene glycol diacrylate, 7.5 parts of auxiliary agent, 6 parts of light trigger,
34 parts of diluent, 3 parts of levelling agent；The auxiliary agent is made up of by weight 4.1% gamma-butyrolacton and 5.9% butylene glycol.
Comparative example 1
This comparative example provides a kind of conductor preforming fire safe type cable, including core, and the core includes 4 conductors；It is described to lead
Its section of body is sector；The conductor is formed by many conductor monofilament are stranded.In this comparative example, after the wrapped mica tape of conductor, twist
Synthesis cable
Further, after stranding, the lay ratio of conductor is 45.
Further, the thickness of the mica tape is 2.0mm.
Further, the gap in the core between the mica tape of many conductors is also filled with flame-retardant filler；Institute
Stating core also includes the wrapped alkali-free glass silk ribbon on the outside of mica tape successively；The flame-retardant filler is flame resistant filler rope.
Experimental example
Breakdown strength (ageing time 1000h) after model cable deterioration with moisture, unit kV/mm（Conductor is copper）.
Its result is as shown in table 1.
Table 1.
| Experimental group | kV/mm |
| Embodiment 1 | 70.3 |
| Embodiment 5 | 84.5 |
| Embodiment 6 | 81.6 |
| Embodiment 7 | 83.2 |
| Embodiment 8 | 68.1 |
| Embodiment 9 | 65.9 |
| Embodiment 10 | 66.4 |
| Comparative example 1 | 38.2 |
Preferably, ceramic silicone band, corrugated copper tube, oversheath are also surrounded with outside the core successively.
It is the wherein specific implementation of the present invention above, its description is more concrete and detailed, but therefore can not manage
Solution is the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from
On the premise of present inventive concept, some deformations and improvement can also be made, these obvious alternative forms belong to this
Bright protection domain.
Claims (10)
1. a kind of conductor preforming fire safe type cable, including core, the core include many conductors, it is characterised in that：It is described
Conductor is pretwist conductor；The pretwist conductor is formed by many conductor monofilament are stranded；The pretwist conductor is the axle around core
The spiral type of heart rotation；The lay ratio of many conductors is identical；The many conductors are spelled centered on the axle center of core
Connect, stranded form；Many its edge of pretwist conductor are parallel to each other.
2. conductor preforming fire safe type cable according to claim 1, it is characterised in that：The lay ratio of the pretwist conductor
For 40～55.
3. the conductor preforming fire safe type cable according to any one of claim 1-3, it is characterised in that：Outside the conductor also
It is surrounded with mica tape.
4. conductor preforming fire safe type cable according to claim 3, it is characterised in that：The thickness of the mica tape is
0.6-1.0mm。
5. conductor preforming fire safe type cable according to claim 4, it is characterised in that：Many conductors in the core
Gap between mica tape is also filled with flame-retardant filler；The core also includes the wrapped alkali-free glass on the outside of mica tape successively
Glass silk ribbon；The flame-retardant filler is flame resistant filler rope.
6. the conductor preforming fire safe type cable according to claim 4 or 5, it is characterised in that：Outside the core also successively
It is surrounded with ceramic silicone band, corrugated copper tube, oversheath.
7. conductor preforming fire safe type cable according to claim 4, it is characterised in that：The inner side of the mica tape covers
There is enhancing coating；Described its raw material of enhancing coating includes 50～60 parts of modified epoxy acrylic ester, epoxy acrylic by weight
48～60 parts of ester, 15～25 parts of urethane acrylate, 40～45 parts of polyester modification acrylate, five acrylic acid of dipentaerythritol
11～21 parts of ester, 12～25 parts of tripropylene glycol diacrylate, 7～8 parts of auxiliary agent, 1～8 part of light trigger, diluent 32～39
Part, 2～4 parts of levelling agent；Fourth of the auxiliary agent by the triphenylphosphine of 1-3%, the gamma-butyrolacton of 2-5% and surplus by weight
Enediol is constituted.
8. the conductor preforming fire safe type cable according to any one of claim 1-3, it is characterised in that：The pretwist conductor
Its section is fan-shaped or tile-type.
9. a kind of preparation method of conductor preforming fire safe type cable, including following operation：
S1. conductor monofilament is twisted into into conductor；
S2. conductor is carried out into pretwist according to the lay ratio of stranding, obtains the spiral pretwist rotated around an axle center and lead
Body；
S3. in the outer wrapped mica tape of pretwist conductor for passing through pretwist；
S4. in the wrapped alkali-free glass silk ribbon in outside of mica tape；
S5. by many pretwist conductors centered on the axle center of its pretwist, mutual side is affixed twisted synthesizing cable after splicing, obtains line
Core；
S6. ceramic silicone band, corrugated copper tube, oversheath are sequentially formed outside core, obtains the conductor preforming fire safe type
Cable.
10. preparation method according to claim 9, it is characterised in that：It is additionally included in the S5 in many pretwist conductors
The heart arranges flame resistant filler rope；Enhancing coating is coated with the inside of the mica tape；Described its raw material of enhancing coating is wrapped by weight
Include 50～60 parts of modified epoxy acrylic ester, 48～60 parts of epoxy acrylate, 15～25 parts of urethane acrylate, polyester changes
40～45 parts of acrylate of property, 11～21 parts of Dipentaerythritol Pentaacrylate, 12～25 parts of tripropylene glycol diacrylate are helped
7～8 parts of agent, 1～8 part of light trigger, 32～39 parts of diluent, 2～4 parts of levelling agent；The auxiliary agent is by 1-3%'s by weight
The butylene glycol composition of triphenylphosphine, the gamma-butyrolacton of 2-5% and surplus；The enhancing dope layer its preparation method is will be each
Component is added in reaction vessel by respective parts by weight, and ultrasonic disperse was heated to 75 DEG C～90 DEG C, high-speed stirring after 60～90 minutes
Mix 3 .5～5 .5 hours of dispersion and obtain oleo stock；Oleo stock is coated in into side of the mica tape towards core, with 110mW/cm2 's
Ultraviolet light, irradiation 75s make paint solidification, both.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029045A (en) * | 2019-11-20 | 2020-04-17 | 四川新蓉电缆有限责任公司 | Method for processing special-shaped monofilament stranded conductor |
Citations (5)
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| CN111029045A (en) * | 2019-11-20 | 2020-04-17 | 四川新蓉电缆有限责任公司 | Method for processing special-shaped monofilament stranded conductor |
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Application publication date: 20170419 |