CN101948988A - Method for manufacturing CNT (carbon nanotube) composite transmission conductor - Google Patents
Method for manufacturing CNT (carbon nanotube) composite transmission conductor Download PDFInfo
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- CN101948988A CN101948988A CN2010105218353A CN201010521835A CN101948988A CN 101948988 A CN101948988 A CN 101948988A CN 2010105218353 A CN2010105218353 A CN 2010105218353A CN 201010521835 A CN201010521835 A CN 201010521835A CN 101948988 A CN101948988 A CN 101948988A
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- carbon nanotube
- tube pipe
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- aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
- C22C49/06—Aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
Abstract
The invention discloses a method for manufacturing a CNT (carbon nanotube) composite transmission conductor, which comprises the following steps: filling MCNT (multiwalled carbon nanotube) powder accounting for 1 to 7 percent of the total mass into small holes uniformly drilled on electrotechnical aluminium blocks; stacking two aluminium blocks in which the MCNT powder has been filled inversely by using a blind-hole method; after the two aluminium blocks are prepared into composite materials through a friction extrusion process, carrying out tandem rolling and drawing on the composite materials so as to prepare the composite materials into required CNT/aluminum based composite material round wires; and finally, stranding the round wires by a wire twisting machine, then through a back-twisting stress eliminating device, obtaining a single-stranded CNT composite transmission conductor. The method of the invention has the advantages: 1) the coefficient of linear expansion of the conductor is small, and the thermal deformation resistance performance is strong, the method can reduce the influence of the temperature on sag change, improve the sag characteristics, improve the security of overhead lines, and reduce the construction cost of the lines; 2) the method is helpful to improve the conductivity of the conductor along the line, and further reduce the transmission losses; and 3) the process is relatively simple, and the loosening and skid phenomenon and the like of composite cores and aluminium strands due to various reasons do not exist.
Description
Technical field
The present invention relates to a kind of manufacture method of compound transmission pressure, relate in particular to the manufacture method of the compound transmission pressure of a kind of carbon nanotube.
Background technology
The transmission pressure of tradition aerial line mostly is Aluminium Cable Steel Reinforced, there are problems in actual use: as: 1) strengthen the weight that steel core has greatly improved lead, therefore need span between the aerial line shaft tower will lack or strengthen the intensity of shaft tower, otherwise the carrying capacity of shaft tower is not enough, so line cost increases; 2) magnetic loss of Cun Zaiing and heat effect make the transmission losses of circuit big; 3) linear expansivity of steel core is big, and the variation of operating mode changes greatly the sag of lead, makes that the insulating space corridor of aerial line is big; 4) galvanic corrosion between aluminum steel and zinc-plated steel core work-ing life of having reduced lead.
Along with China's rapid development of economy, the construction of power industry is the trend of advancing by leaps and bounds, and overhead power transmission conducting wire is had higher requirement.For overcoming the defective of Aluminium Cable Steel Reinforced, carbon fiber composite core wire has appearred at present, as Chinese patent CN1649718, CN201237921 etc., this class lead has characteristics such as high specific strength, high temperature resistant, antifatigue, low degree of speeding, linear expansivity are little, and advantage becomes increasingly conspicuous in transmission pressure.
For fibre reinforced composites, determine that a key factor of its performance is a length-to-diameter ratio.Carbon nanotube is as monodimension nanometer material, huge length-to-diameter ratio (generally more than 1000:1) is expected to as tough and tensile carbon fiber it, intensity still is that toughness all is far superior to any fiber, therefore be considered to following " super fiber ", the application of carbon nanotube in transmission pressure, from point of theory, performance is considerably beyond carbon fiber composite core wire.But relevant with nanophase inherent physics, chemical property, the many of complicated and difficulty are wanted in the preparation of the more common matrix material of preparation of nanophase reinforced composite.Such as, powder metallurgic method, melt impregnation method, in-situ synthesis, high-energy ball milling method, rapid solidification method, electroless plating method, the plasma spraying method of forming etc. are mainly adopted in the preparation of carbon nanotube/aluminum matrix composite both at home and abroad at present, these methods all need to prepare in advance the powder mixture of carbon nanotube and aluminum substrate, the dispersion of carbon nanotube in matrix is restricted, and methods such as high-energy ball milling also can cause the destruction of carbon nanotube perfect structure, thereby weaken the performance of matrix material excellence.
Summary of the invention
The object of the present invention is to provide the manufacture method of the compound transmission pressure of a kind of carbon nanotube, prepared sub-thread transmission pressure aluminum substrate crystal grain is tiny, carbon nanotube is uniformly dispersed and basic orientation along the line, help bringing into play the advantage of carbon nano tube compound material, improve the aluminium conductor obdurability and improve direction specific conductivity along the line, reduce transmission losses etc.
The present invention is achieved like this, it is characterized in that the multi-wall carbon nano-tube pipe powder that will account for total mass 1%～7% is filled in the aperture that evenly brill is good on electrician's aluminium block, two aluminium blocks that added the multi-wall carbon nano-tube pipe powder are stacked together in the opposite mode of blind hole normal direction, the multi-wall carbon nano-tube pipe powder can be wrapped wherein, then by friction and Extrusion technology, the high speed rotary grinding head is arranged in the middle of promptly forming one, the friction head periphery has the metal flow passage of fine gap, the friction head insertion of high speed rotating has been added in the aluminium block of multi-wall carbon nano-tube pipe powder, under the excellent squeezing action of extruding, the aluminium block that has added the multi-wall carbon nano-tube pipe powder presses to friction head and is broken by the metal flow passage, the speed of rotation of friction head is 480-720r/min, push excellent extrusion speed 24-36mm/min, carbon nanotube/the aluminum matrix composite that obtains is gone into the tandem rolling unit and is rolled into bar continuously, matrix material advances to roll 500 ℃～600 ℃ of temperature, going out to roll temperature is 150 ℃～350 ℃, through behind the tandem rolling continuously, carry out backguy on the high speed aluminum alloy wire-drawing machine, pull wire speed is 20-30m/s, backguy through 13 passages, be drawn into needed carbon nanotube/aluminum matrix composite circle line, at last, on wire twisting machine, twist system, through back twist stress-removal device, obtain the compound transmission pressure of sub-thread carbon nanotube.
Advantage of the present invention is: 1) friction and Extrusion helps the compound of carbon nanotube and matrix metal, it is uniformly dispersed in matrix, can increase substantially the mechanics and the thermal property of material, aluminum substrate is through the friction and Extrusion effect, crystal grain obtains refinement, also helping its intensity and flexible improves, therefore need not to adopt steel core or composite core to strengthen and improve lead intensity, can alleviate the weight of lead greatly, simultaneously, can overcome the heat effect that the steel core wire magnetic loss causes, eliminate the bimetallic corrosion between aluminum steel and the zinc-plated steel core, reduce transmission loss and improve the lead corrosion resisting property; The lead linear expansivity is little, and the opposing thermal deformation behavior is strong, can reduce temperature to the influence that sag changes, and improves the sag characteristic, improves the security of aerial line and reduces the line construction cost; 2) through the backguy of tandem rolling and multi-pass, help carbon nanotube to be orientated vertically,, help improving lead direction specific conductivity along the line, further reduce transmission losses based on the superpower electroconductibility of carbon nanotube and the anisotropy of matrix material specific conductivity; 3) be different from use carbon fibre resin base composite core in most of carbon fiber complex core transmission pressures, carbon nanotube is direct and aluminum substrate is compound, and technology is simple relatively, can not have phenomenons such as composite core and aluminum stranded conductor become flexible, skid for various reasons.
Embodiment
Embodiment 1
The present invention is achieved like this, the multi-wall carbon nano-tube pipe powder that accounts for total mass 1% is filled in the aperture that evenly brill is good on electrician's aluminium block, two aluminium blocks that added the multi-wall carbon nano-tube pipe powder are stacked together in the opposite mode of blind hole normal direction, the multi-wall carbon nano-tube pipe powder can be wrapped wherein, then the friction head insertion of high speed rotating has been added in the aluminium block of multi-wall carbon nano-tube pipe powder, the speed of rotation of friction head is 480r/min, push excellent extrusion speed 24mm/min, carbon nanotube/the aluminum matrix composite that obtains is gone into the tandem rolling unit and is rolled into bar continuously, matrix material advances to roll 500 ℃ of temperature, going out to roll temperature is 150 ℃, through behind the tandem rolling continuously, carry out backguy on the high speed aluminum alloy wire-drawing machine, pull wire speed is 20m/s, through the backguy of 13 passages, is drawn into needed carbon nanotube/aluminum matrix composite circle line, at last, on wire twisting machine, twist system,, obtain the compound transmission pressure of sub-thread carbon nanotube through back twist stress-removal device.The result shows, the compound transmission pressure tensile strength of prepared carbon nanotube mean value can reach 255MPa, the average 50.3%IACS(line diameter of electric conductivity 4.63mm), common electrician's aluminium conductor (the average 215MPa of tensile strength, the average 49.8%IACS of electric conductivity) of comparing actual measurement improves.
Embodiment 2
The present invention is achieved like this, the multi-wall carbon nano-tube pipe powder that accounts for total mass 5% is filled in the aperture that evenly brill is good on electrician's aluminium block, two aluminium blocks that added the multi-wall carbon nano-tube pipe powder are stacked together in the opposite mode of blind hole normal direction, the multi-wall carbon nano-tube pipe powder can be wrapped wherein, then the friction head insertion of high speed rotating has been added in the aluminium block of multi-wall carbon nano-tube pipe powder, the speed of rotation of friction head is 600r/min, push excellent extrusion speed 30mm/min, carbon nanotube/the aluminum matrix composite that obtains is gone into the tandem rolling unit and is rolled into bar continuously, matrix material advances to roll 550 ℃ of temperature, going out to roll temperature is 200 ℃, through behind the tandem rolling continuously, carry out backguy on the high speed aluminum alloy wire-drawing machine, pull wire speed is 25m/s, through the backguy of 13 passages, is drawn into needed carbon nanotube/aluminum matrix composite circle line, at last, on wire twisting machine, twist system,, obtain the compound transmission pressure of sub-thread carbon nanotube through back twist stress-removal device.The result shows, the compound transmission pressure tensile strength of prepared carbon nanotube mean value can reach 321MPa, the average 51.2%IACS of electric conductivity, and the average 215MPa of common electrician's aluminium conductor tensile strength of actual measurement, the average 49.8%IACS(line diameter of electric conductivity 4.63mm).
Embodiment 3
The present invention is achieved like this, the multi-wall carbon nano-tube pipe powder that accounts for total mass 7% is filled in the aperture that evenly brill is good on electrician's aluminium block, two aluminium blocks that added the multi-wall carbon nano-tube pipe powder are stacked together in the opposite mode of blind hole normal direction, the multi-wall carbon nano-tube pipe powder can be wrapped wherein, then the friction head insertion of high speed rotating has been added in the aluminium block of multi-wall carbon nano-tube pipe powder, the speed of rotation of friction head is 720r/min, push excellent extrusion speed 36mm/min, carbon nanotube/the aluminum matrix composite that obtains is gone into the tandem rolling unit and is rolled into bar continuously, matrix material advances to roll 600 ℃ of temperature, going out to roll temperature is 350 ℃, through behind the tandem rolling continuously, carry out backguy on the high speed aluminum alloy wire-drawing machine, pull wire speed is 30m/s, through the backguy of 13 passages, is drawn into needed carbon nanotube/aluminum matrix composite circle line, at last, on wire twisting machine, twist system,, obtain the compound transmission pressure of sub-thread carbon nanotube through back twist stress-removal device.The result shows, the compound transmission pressure tensile strength of prepared carbon nanotube mean value can reach 346MPa, the average 51.5%IACS of electric conductivity, and the average 215MPa of common electrician's aluminium conductor tensile strength of actual measurement, the average 49.8%IACS(line diameter of electric conductivity 4.63mm).
Claims (1)
1. the manufacture method of the compound transmission pressure of carbon nanotube, it is characterized in that the multi-wall carbon nano-tube pipe powder that will account for total mass 1%～7% is filled in the aperture that evenly brill is good on electrician's aluminium block, two aluminium blocks that added the multi-wall carbon nano-tube pipe powder are stacked together in the opposite mode of blind hole normal direction, the multi-wall carbon nano-tube pipe powder can be wrapped wherein, then by friction and Extrusion technology, the high speed rotary grinding head is arranged in the middle of promptly forming one, the friction head periphery has the metal flow passage of fine gap, the friction head insertion of high speed rotating has been added in the aluminium block of multi-wall carbon nano-tube pipe powder, under the excellent squeezing action of extruding, the aluminium block that has added the multi-wall carbon nano-tube pipe powder presses to friction head and is broken by the metal flow passage, the speed of rotation of friction head is 480-720r/min, push excellent extrusion speed 24-36mm/min, carbon nanotube/the aluminum matrix composite that obtains is gone into the tandem rolling unit and is rolled into bar continuously, matrix material advances to roll 500 ℃～600 ℃ of temperature, going out to roll temperature is 150 ℃～350 ℃, through behind the tandem rolling continuously, carry out backguy on the high speed aluminum alloy wire-drawing machine, pull wire speed is 20-30m/s, backguy through 13 passages, be drawn into needed carbon nanotube/aluminum matrix composite circle line, at last, on wire twisting machine, twist system, through back twist stress-removal device, obtain the compound transmission pressure of sub-thread carbon nanotube.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105218353A CN101948988A (en) | 2010-10-28 | 2010-10-28 | Method for manufacturing CNT (carbon nanotube) composite transmission conductor |
| PCT/CN2011/001592 WO2012055155A1 (en) | 2010-10-28 | 2011-09-19 | Method for manufacturing carbon nanotube composite transmission wire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105218353A CN101948988A (en) | 2010-10-28 | 2010-10-28 | Method for manufacturing CNT (carbon nanotube) composite transmission conductor |
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| CN101948988A true CN101948988A (en) | 2011-01-19 |
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| CN2010105218353A Pending CN101948988A (en) | 2010-10-28 | 2010-10-28 | Method for manufacturing CNT (carbon nanotube) composite transmission conductor |
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| WO (1) | WO2012055155A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055155A1 (en) * | 2010-10-28 | 2012-05-03 | 江西省电力科学研究院 | Method for manufacturing carbon nanotube composite transmission wire |
| WO2013127444A1 (en) | 2012-02-29 | 2013-09-06 | Adamco Ag | Carbon nanotube enhanced electrical cable |
| CN103632751A (en) * | 2013-12-09 | 2014-03-12 | 国家电网公司 | Carbon nano tube reinforced aluminum alloy core aluminum stranded wire and preparation method thereof |
| CN106297944A (en) * | 2016-09-12 | 2017-01-04 | 国家电网公司 | A kind of cable core |
| CN108227768A (en) * | 2018-01-18 | 2018-06-29 | 重庆大学 | Shifting control method processed under a kind of primacord for preventing slip |
| CN109794612A (en) * | 2019-03-19 | 2019-05-24 | 鼎镁（昆山）新材料科技有限公司 | Aluminum matrix composite and preparation method thereof is made in a kind of Fast Sintering powder metallurgy |
| CN110129606A (en) * | 2019-05-23 | 2019-08-16 | 昆明理工大学 | A kind of preparation method of orientational alignment carbon nano-tube enhancing aluminum-base composite wire rod |
| CN111331127A (en) * | 2018-12-18 | 2020-06-26 | 有研工程技术研究院有限公司 | Preparation method of graphene/copper composite wire |
Families Citing this family (2)
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| WO2015013349A1 (en) * | 2013-07-24 | 2015-01-29 | Cleveland State University | Methods for the development of commercial scale nano-engineered ultraconductive copper wire |
| KR102296952B1 (en) * | 2020-03-27 | 2021-09-01 | 부경대학교 산학협력단 | Method for manufacturing extruded material of aluminum-carbon nanotube composite with improved corrosion resistance and extruded material of aluminum-carbon nanotube composite manufactured thereby |
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- 2010-10-28 CN CN2010105218353A patent/CN101948988A/en active Pending
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2011
- 2011-09-19 WO PCT/CN2011/001592 patent/WO2012055155A1/en active Application Filing
Patent Citations (1)
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| CN101074465A (en) * | 2007-04-30 | 2007-11-21 | 广东雄力双利电缆有限公司 | Production of high-strength heat-resisting aluminum-alloy overhead transmission connecting wire |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055155A1 (en) * | 2010-10-28 | 2012-05-03 | 江西省电力科学研究院 | Method for manufacturing carbon nanotube composite transmission wire |
| WO2013127444A1 (en) | 2012-02-29 | 2013-09-06 | Adamco Ag | Carbon nanotube enhanced electrical cable |
| CN103632751A (en) * | 2013-12-09 | 2014-03-12 | 国家电网公司 | Carbon nano tube reinforced aluminum alloy core aluminum stranded wire and preparation method thereof |
| CN103632751B (en) * | 2013-12-09 | 2016-01-20 | 国家电网公司 | Carbon-nanotube enhanced aluminum stranded wire of aluminum alloy core and preparation method thereof |
| CN106297944A (en) * | 2016-09-12 | 2017-01-04 | 国家电网公司 | A kind of cable core |
| CN108227768A (en) * | 2018-01-18 | 2018-06-29 | 重庆大学 | Shifting control method processed under a kind of primacord for preventing slip |
| CN111331127A (en) * | 2018-12-18 | 2020-06-26 | 有研工程技术研究院有限公司 | Preparation method of graphene/copper composite wire |
| CN109794612A (en) * | 2019-03-19 | 2019-05-24 | 鼎镁（昆山）新材料科技有限公司 | Aluminum matrix composite and preparation method thereof is made in a kind of Fast Sintering powder metallurgy |
| CN110129606A (en) * | 2019-05-23 | 2019-08-16 | 昆明理工大学 | A kind of preparation method of orientational alignment carbon nano-tube enhancing aluminum-base composite wire rod |
| CN110129606B (en) * | 2019-05-23 | 2021-02-09 | 昆明理工大学 | Preparation method of directionally arranged carbon nanotube reinforced aluminum-based composite wire |
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| Publication number | Publication date |
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| WO2012055155A1 (en) | 2012-05-03 |
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Application publication date: 20110119 |