CN103646718B - A kind of fiber composite core conductive wire for power transmission line - Google Patents
A kind of fiber composite core conductive wire for power transmission line Download PDFInfo
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- CN103646718B CN103646718B CN201310672144.7A CN201310672144A CN103646718B CN 103646718 B CN103646718 B CN 103646718B CN 201310672144 A CN201310672144 A CN 201310672144A CN 103646718 B CN103646718 B CN 103646718B
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Abstract
The present invention proposes a kind of fiber composite core conductive wire for power transmission line, this wire is made up of the fiber composite core set gradually, coating and outer twisted wire, and coating is the coat of one or more coating be selected from fluorocarbon resin coating, polyurea elastomer coating, polyurethane coating.This fiber composite core conductive wire for power transmission line is wear-resisting, corrosion-resistant, wet-heat resisting, resistance to steam, uvioresistant; coating protection fiber composite core is from environmental corrosion and aluminum steel wearing and tearing; improve fiber composite core ageing resistace; effectively extend the useful life of fiber composite core, improve the security reliability of fiber composite core wire.
Description
Technical field
The present invention relates to power transmission cable field, be specifically related to a kind of fiber composite core conductive wire for power transmission line.
Background technology
The lagging in development of China's not only power-generating industry, the drawback of transmission of electricity industry also shows especially out, transmission line can't bear the demand of bearing the quick dilatation of transmission capacity, the power failure caused due to overload, disconnection fault occur again and again, electric power transfer becomes " bottleneck " of electric power industry development, various countries are all at the novel built on stilts wire used for transmission line of research, and to replace traditional steel reinforced aluminium conductor, fiber composite core wire is arisen at the historic moment thus.
Fiber composite wire is the traditional steel-core-aluminium hinge wire of the desirable replacement of current bulk of worldwide electricity power transmission and transformation system, aluminium Baogang wire, the new product of aluminium alloy conductor and import invar wire, the steel core of common steel reinforced aluminium conductor replace by the composite material core wire made with fiber, fiber composite wire has lightweight compared with conventional wires, coefficient of linear expansion is little, intensity is large, low line loss, sag is little, low arc drop, high temperature resistant, corrosion-resistant, with the advantage such as environment is affine, achieve the energy-conservation of electric power transfer, Environment protection and safety, be known as a kind of novel energy-saving transmission pressure, be widely used in circuit capacity-increasing transformation and newly-built circuit.
Carbon fiber is a kind of hexagoinal lattice layer structure of graphite, and be a kind of full black matrix material, therefore in electric heating application, the electric conversion efficiency showed is high.Under given conditions, high temperature is not oxidized, and load intensity and the mechanical strength of the electric current of unit are do not change.Only have the U.S. and Japan to develop carbon-fibre wire in the world at present, the output of a carbon-fibre wire enterprise of Japan just accounts for Century Square about 0%.
But on the one hand fiber composite core can be subject to the long term of ultraviolet light, steam, high temperature under arms under environment, and resin material can be degraded, and causes composite core performance degradation; On the other hand, transmission line is in wind for a long time and shakes under operating mode, the special operation condition such as sometimes even to wave, vibrate or wave in process, composite core surface and aluminium stranded conductor can rub, and the result of friction makes the generation wearing and tearing of composite core surface even destroy, and causes composite core fail safe to decline.Therefore, be necessary to carry out wear-resisting and environmental corrosion resisting protection to compound core conducting wire.
Such as application number is CN201220142300.X, the utility application that utility model name is called " a kind of thermoplastic resin carbon fiber cable ", relate to a kind of thermoplastic resin carbon fiber cable, the outer core of the glass fiber reinforced epoxy resin composite material covered outward by carbon-fibre reinforced epoxy resin composite material inner core, at the outer protective coating arranging polytetrafluoroethylene floor or insulating material layer formation between core and the trapezoidal aluminum conductor of ground floor of glass fiber reinforced epoxy resin composite material, the trapezoidal aluminum conductor of ground floor is covered outward at the outer core of glass fiber reinforced epoxy resin composite material, the trapezoidal aluminum conductor of the second layer is covered outward at the trapezoidal aluminum conductor of ground floor.Polytetrafluoroethylene floor or insulating material layer mainly make to insulate completely between plug and aluminum steel, make to there is not contact potential difference therebetween, make aluminum conductor from galvano-cautery.Well can not play wear-resisting and effect that is environmental corrosion resisting.
Summary of the invention
In order to overcome the above-mentioned defect of prior art, the present invention is directed to the fiber composite core conductive wire for power transmission line fiber composite core problem with being subject to environmental corrosion easy to wear, provide a kind of fiber composite core conductive wire for power transmission line, adopt quick coating paint-on technique in this fiber composite core conductive wire for power transmission line manufacture process, form wear-resisting, environmental corrosion resisting coat at fiber composite wicking surface.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of fiber composite core conductive wire for power transmission line, wire is made up of the fiber composite core set gradually, coating and outer twisted wire, and coating is the coat of one or more coating be selected from fluorocarbon resin coating, polyurea elastomer coating, polyurethane coating.
Further, fiber composite core is carbon fiber complex core or high-strength fiber glass composite core.
Further, high-strength fiber glass composite core is glass fiber reinforced epoxy resin coremaking.
Further, coating is individual layer, and thickness is 50 ~ 100 μm.
Further, coating is multilayer, and thickness is 50 ~ 100 μm.
Further, multilayer is corrosion resistant coating layer and wear-resistant paint layer from the inside to the outside, and corrosion resistant coating layer is fluorocarbon resin coating coat, and wear-resistant paint layer is polyurea elastomer paint layer or polyurethane coating coat.
Further, fluorocarbon resin coating comprises thermosetting fluoro carbon resin and crosslinking agent, and the cosegment of thermosetting fluoro carbon resin comprises chlorotrifluoroethylene, vinylacetate, tertiary ethylene carbonate, hydroxyalkyl alkene ether, and crosslinking agent is blocked isocyanate.
Further, polyurea elastomer coating comprises ending amino polyether resin, amine chainextender and MDI prepolymer.Polyurea elastomer coating selection spary coating type system.
Further, polyurethane coating is external crosslinking aqueous polyurethane coating, comprises polyurethane and crosslinking agent, and described crosslinking agent is aziridine.Aziridine is polyfunctional group aziridine.
Further, fiber composite core is cylindrical, and diameter is 5 ~ 10mm.
Further, coating is fast-curing paint, and curing temperature is 170 ~ 190 DEG C, and curing time is 1 ~ 4min.
Another object of the present invention is provide a kind of method preparing fiber composite core conductive wire for power transmission line, comprises the steps:
1) impregnation: pretreated fibre bundle hauling machine traction under, in the abundant impregnating resin of impregnated resin groove:
Unnecessary resin and bubble is got rid of in process;
2) hot curing is shaping: the pultrusion of step 1 gained fibre bundle is gone out hot setting mold releasability shaping, temperature is 180 ~ 210 DEG C, and curing time is 30 ~ 90s;
3) applying coating: through coating unit coating coating after fiber composite core shaping for hot curing is cooled fast;
Dope viscosity is 300 ~ 600cps, and coating layer thickness is 50 ~ 100 μm; Coating is too thin to be easily worn, and too thickly easily chaps in flash cure process;
4) Post RDBMS is shaping: will be coated with the fiber composite core of coating through hot setting case Post RDBMS, temperature is 160 ~ 200 DEG C, and curing time is 3 ~ 5min; Match with composite core production line, select fast-curing paint, curing temperature 170-190 DEG C, curing time is 1-4min;
5) in the outer twisted wire of the fiber composite core outer cladding that Post RDBMS is shaping.
Further, applying coating described in step 3 is for selecting high pressure painting, hopper dip-coating or the coating of spread pen brushing method.
Hopper dip-coating and spread pen brush that two kinds of method techniques are simple, cost is lower, and layer thickness uniformity is slightly poor;
High pressure painting, by controlling flow 20-50ml/min, regulates spray gun pressure 0.15-0.2MPa to control thickness and the compactness of coating;
Coating unit is nearly hermetically-sealed construction, and line inlet port and line outlet size control to pass through for holding fiber composite core, and nearly hermetically-sealed construction is conducive to preventing flying upward of coating in spraying process, can reduce paint waste.
Fiber composite core diameter is 5-10mm cylindrical structural, and coating unit possesses around fiber composite core spinfunction, ensure that face coat thickness is even.
Because fiber composite core adopts pultrude process, coating procedure speed is identical with core pultrusion speed.
Fast-curing paint possesses wear-resisting and corrosion-resistant, also has good physical chemistry compatibility with fiber composite wicking surface, ensure that the bond strength of coating and fiber composite core.
Fluorocarbon resin, polyurethane coating due to its hydrophobicity strong, heat resistance ability is excellent, may be used for acid rain or coastal long-term humidity, region transmission line that corrosivity is larger.
Polyurea elastomer coating is comparatively strong due to resistance to wear, can be used in long-term wind-force comparatively large, be easy to vibration occurs and waves regional transmission line as wear-resistant coating.
In order to ensure the protection effect of coating, the resistance to wear (1000g/1000r) of coating is less than 90mg (GB/T1768-79 (89)), adhesion is greater than 3MP (GB/T5210-2006), long-term heat resisting temperature is 160 DEG C, wet-heat resisting good (QJ990.10-86).
Owing to have employed technique scheme, compared with prior art, beneficial effect of the present invention comprises:
1. the curing of coatings speed of the fiber composite core wire in the present invention is fast, and coating cost is low.
2. the coating of the fiber composite core wire in the present invention is wear-resisting, corrosion-resistant, wet-heat resisting, resistance to steam, uvioresistant; protection fiber composite core is from environmental corrosion and aluminum steel wearing and tearing; improve fiber composite core ageing resistace; effectively extend the useful life of fiber composite core, improve the security reliability of fiber composite core wire.
3. the fiber composite core wire in the present invention avoids between bimetallic corrodes.
4. the fiber composite core wire in the present invention provides higher current-carrying capacity, also effectively reduces engineering cost simultaneously.
5. the fiber composite core wire in the present invention has high strength core, reduces the quantity of cable rack, reduces the height of cable rack, saves land used, reduces nonferrous metal resource consumption, contributes to structure safety, environmental protection, efficient economizing electric power transmission network.
6. the fiber composite core wire in the present invention is easy to rapid shaping, and cost is lower, barrier propterty good.
7. coating and the fiber composite core surface bonding strength of the fiber composite core wire in the present invention are high.
8. the coating of the fiber composite core wire in the present invention is incrust with cracking.
9. the fiber composite core wire preparation method floating coat coating unit in the present invention is nearly hermetically-sealed construction, line inlet port and line outlet size control to pass through for holding fiber composite core, nearly hermetically-sealed construction is conducive to preventing flying upward of coating in spraying process, can reduce paint waste.
10. in the fiber composite core wire preparation method in the present invention, coating unit possesses around composite core spinfunction, to ensure the uniformity of coating layer thickness.
Embodiment
Below in conjunction with example, the present invention will be described in detail.
Embodiment 1:
Obtain fibre bundle through dipping process and pull out diameter for 5mm carbon fiber complex core through 190 DEG C of moulds with the speed of 0.7m/min, through 1 minute, air-cooled cooling rear surface temperature was down to 40 DEG C, through the high pressure painting room of 0.5m hermetically-sealed construction, the perseveration of many shower nozzles rotational structure, rotate around composite core with the speed of 10 revolutions per seconds, by the fluorocarbon resin coating in hopper, high pressure painting is by controlling flow 30ml/min, regulate spray gun pressure 0.15MPa even application to carbon fiber complex core surface, dope viscosity is 300cps, carbon fiber complex core Post RDBMS at 190 DEG C is not less than 4min, testing coating thickness is 70um, paint film resistance to wear (1000g/1000r) is 45mg (GB/T1768-79 (89)), long-term heat resisting temperature is 160 DEG C, adhesion is 6MP (GB/T5210-2006), wet-heat resisting good (QJ990.10-86).
Embodiment 2
Obtain fibre bundle through dipping process and pull out diameter for 8mm carbon fiber complex core through 180 DEG C of moulds with the speed of 0.4m/min, 35 DEG C are down to through 1 minute cooling rear surface temperature, through the application chamber of the parallelism brush-coating device of 0.5m hermetically-sealed construction, automatic binder removal spread pen is around composite core 0.5 revolutions per second rotation, by the polyurea elastomer coating in hopper, even brushing is to carbon fiber complex core surface, dope viscosity is 400cps, carbon fiber complex core Post RDBMS at 160 DEG C is not less than 3min, testing coating thickness is 96um (GB/T13452.2-92), paint film resistance to wear (1000g/1000r) is 43mg (GB/T1768-79 (89)), long-term heat resisting temperature is 165 DEG C, adhesion is 6MP (GB/T5210-2006), wet-heat resisting good (QJ990.10-86).
Embodiment 3
Obtain fibre bundle through dipping process and pull out diameter for 10mm high-strength fiber glass composite core through 200 DEG C of moulds with the speed of 0.5m/min, 30 DEG C are down to through 1 minute cooling rear surface temperature, through the application chamber of the hopper dip coating apparatus of 1m hermetically-sealed construction, about a pair adjustable pulley device is had in application chamber, pulley blocks high-strength fiber glass composite core and applies downward pressure, make the high abrasion polyurethane coating in high-strength fiber glass composite core immersion hopper, dope viscosity is 600cps, high-strength fiber glass composite core is Post RDBMS 5min at 200 DEG C, testing coating thickness is 90um (GB/T13452.2-92), paint film resistance to wear (1000g/1000r) is 42mg (GB/T1768-79 (89)), long-term heat resisting temperature is 165 DEG C, adhesion is 5MP (GB/T5210-2006), wet-heat resisting good (QJ990.10-86).
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a fiber composite core conductive wire for power transmission line, described wire is made up of the fiber composite core set gradually, coating and outer twisted wire, it is characterized in that: described coating is the coat of the multiple coating be selected from fluorocarbon resin coating, polyurea elastomer coating, polyurethane coating;
Described coating is multilayer, and thickness is 50 ~ 100 μm;
Described multilayer is corrosion resistant coating layer and wear-resistant paint layer from the inside to the outside, and described corrosion resistant coating layer is fluorocarbon resin coating coat, and described wear-resistant paint layer is polyurea elastomer paint layer or polyurethane coating coat;
Described fluorocarbon resin coating comprises thermosetting fluoro carbon resin and crosslinking agent, and the cosegment of described thermosetting fluoro carbon resin comprises chlorotrifluoroethylene, vinylacetate, tertiary ethylene carbonate, hydroxyalkyl alkene ether, and described crosslinking agent is blocked isocyanate.
2. a kind of fiber composite core conductive wire for power transmission line as claimed in claim 1, is characterized in that: described fiber composite core is carbon fiber complex core or high-strength fiber glass composite core.
3. a kind of fiber composite core conductive wire for power transmission line as claimed in claim 2, is characterized in that: described high-strength fiber glass composite core is glass fiber reinforced epoxy resin coremaking.
4. a kind of fiber composite core conductive wire for power transmission line as claimed in claim 1, is characterized in that: described polyurea elastomer coating comprises ending amino polyether resin, amine chainextender and MDI prepolymer.
5. a kind of fiber composite core conductive wire for power transmission line as claimed in claim 1, is characterized in that: described polyurethane coating is external crosslinking aqueous polyurethane coating, comprises polyurethane and crosslinking agent, described crosslinking agent is aziridine.
6. a kind of fiber composite core conductive wire for power transmission line as claimed in claim 1, is characterized in that: described fiber composite core is cylindrical, and diameter is 5 ~ 10mm.
7. a kind of fiber composite core conductive wire for power transmission line as claimed in claim 1, is characterized in that: described coating is fast-curing paint, and curing temperature is 170 ~ 190 DEG C, and curing time is 1 ~ 4min.
8. prepare a method for fiber composite core conductive wire for power transmission line as claimed in claim 1, it is characterized in that described method comprises the steps:
1) impregnation: pretreated fibre bundle hauling machine traction under, in the abundant impregnating resin of impregnated resin groove;
2) hot curing is shaping: the pultrusion of step 1 gained fibre bundle is gone out hot setting mold releasability shaping, temperature is 180 ~ 210 DEG C, and curing time is 30 ~ 90s;
3) applying coating: through coating unit coating coating after fiber composite core shaping for hot curing is cooled fast;
Dope viscosity is 300 ~ 600cps, and coating layer thickness is 50 ~ 100 μm;
4) Post RDBMS is shaping: will be coated with the fiber composite core of coating through hot setting case Post RDBMS, temperature is 160 ~ 200 DEG C, and curing time is 3 ~ 5min;
5) in the outer twisted wire of the fiber composite core outer cladding that Post RDBMS is shaping.
9. a kind of method preparing fiber composite core conductive wire for power transmission line as claimed in claim 8, is characterized in that: applying coating described in step 3 is for selecting high pressure painting, hopper dip-coating or the coating of spread pen brushing method.
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| CN103985464B (en) * | 2014-05-27 | 2016-10-05 | 中复碳芯电缆科技有限公司 | There is wire of high current-carrying capacity and anti-icing performance and preparation method thereof |
| CN104835553A (en) * | 2015-04-15 | 2015-08-12 | 江苏中天科技股份有限公司 | Surface-treated cooled wire |
| CN106328275A (en) * | 2016-08-30 | 2017-01-11 | 上海电缆研究所 | Composite core for overhead conductor and manufacturing method thereof |
| JP6855966B2 (en) * | 2017-07-19 | 2021-04-07 | 住友電装株式会社 | Wire harness |
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| CN102308340A (en) * | 2009-02-03 | 2012-01-04 | 尼克桑斯公司 | High voltage electric transmission cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040182597A1 (en) * | 2003-03-20 | 2004-09-23 | Smith Jack B. | Carbon-core transmission cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04154004A (en) * | 1990-10-17 | 1992-05-27 | Fujikura Ltd | Overhead bare electric wire |
| CN1898085A (en) * | 2003-10-22 | 2007-01-17 | Ctc电缆公司 | Aluminum conductor composite core reinforced cable and method of manufacture |
| CN101125979A (en) * | 2006-08-18 | 2008-02-20 | 无锡市雅丽涂料有限公司 | Thermosetting fluorine-carbon resin for metal coiled material and coating thereof |
| CN101868487A (en) * | 2007-09-21 | 2010-10-20 | 陶氏环球技术公司 | Polyurethane polymer systems |
| CN102308340A (en) * | 2009-02-03 | 2012-01-04 | 尼克桑斯公司 | High voltage electric transmission cable |
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