CN112908556A - Continuous alumina reinforced metal matrix composite core for high-temperature cable - Google Patents

Continuous alumina reinforced metal matrix composite core for high-temperature cable Download PDF

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Publication number
CN112908556A
CN112908556A CN202110059947.XA CN202110059947A CN112908556A CN 112908556 A CN112908556 A CN 112908556A CN 202110059947 A CN202110059947 A CN 202110059947A CN 112908556 A CN112908556 A CN 112908556A
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core
continuous alumina
continuous
aluminum
fiber bundle
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CN202110059947.XA
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CN112908556B (en
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关克田
孙树人
房海燕
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Shanghai Rongrong New Material Technology Co ltd
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Shanghai Rongrong New Material Technology Co ltd
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    • 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
    • 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
    • C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
    • 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
    • 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
    • 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
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • 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
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • 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
    • H01B7/0009—Details relating to the conductive cores
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

The invention discloses a continuous alumina reinforced metal matrix composite core for a high-temperature cable, belonging to the field of functional materials. The method for preparing the material core comprises the following steps: (1) taking a continuous alumina fiber bundle and an aluminum wire as core materials, wherein the continuous alumina fiber bundle is arranged in the middle, and the aluminum wire is arranged around the continuous alumina fiber bundle; wherein the diameter of the continuous alumina fiber bundle is 0.1-0.2mm, and the diameter of the core material is 0.3-0.4 mm; (2) winding continuous alumina fibers on the surface of the core material obtained in the step (1) in a spiral manner to form a coating layer, so as to obtain a coating material; (3) and (3) compounding the coating material obtained in the step (2) in molten aluminum liquid, and cooling to obtain the continuous aluminum oxide reinforced aluminum-based composite material core. The tensile strength of the continuous alumina reinforced aluminum-based composite material core reaches 22.84kN, the diameter of the material core is less than 0.48mm, the direct current resistance is less than or equal to 2.14, and the highest heat-resistant temperature reaches 1350 ℃.

Description

Continuous alumina reinforced metal matrix composite core for high-temperature cable
Technical Field
The invention relates to a continuous alumina reinforced metal matrix composite core for a high-temperature cable, belonging to the field of functional materials.
Background
With the increasing national economy, the demand for electric power is rising, and the requirement for transmission capacity of the line is more and more strict. The traditional transmission line uses a steel core stranded wire as a main carrier for transmitting electric energy, but the wire is heavy, and the steel wire has the problems of easy electrochemical corrosion, heavy mass, small transmission electric quantity and the like, and various capacity-increasing wires are produced to solve the problems.
The high-performance fiber which can be selected by the capacity-increasing lead is selected from silicon carbide fiber, carbon fiber, basalt fiber and aramid fiber, but in the manufacturing process of the cable composite material, the reinforcing fiber is used inside, the outside is wrapped by metal aluminum, when the fiber bundle yarn is immersed in molten aluminum liquid, the carbon fiber can be carbonized, the basalt fiber and the aramid fiber lose strength at high temperature, only the silicon carbide fiber can bear the composite immersion of the aluminum liquid at about 800 ℃, and the cable composite material is suitable for the reinforcing material of the cable, however, the silicon carbide fiber is high in price and can generate an interface effect when being combined with aluminum metal, so the silicon carbide fiber is not an ideal cable core reinforcing material.
Disclosure of Invention
[ problem ] to
The traditional cable has the problems of low conductivity, heavy quality and the like, and the high-performance fiber for the conventional compatibilization lead also has the problems of low degree of fit with a conductor core material, easy generation of an interface effect, high temperature sensitivity and the like.
[ solution ]
In order to solve at least one of the above problems, the present invention provides a method for preparing a continuous alumina-reinforced aluminum-based composite core, comprising the steps of:
(1) taking a continuous alumina fiber bundle and an aluminum wire as core materials, wherein the continuous alumina fiber bundle is arranged in the middle, and the aluminum wire is arranged around the alumina fiber bundle; wherein the diameter of the continuous alumina fiber bundle is 0.1-0.2mm, and the diameter of the core material is 0.3-0.4 mm;
(2) winding the surface of the core material obtained in the step (1) in a spiral mode by adopting a continuous alumina fiber bundle to form a coating layer to obtain a coating material;
(3) and (3) compounding the coating material obtained in the step (2) in molten aluminum liquid, and cooling to obtain the continuous aluminum oxide reinforced aluminum-based composite material core.
In an embodiment of the present invention, the continuous alumina fibers in step (1) and step (2) are red feather alumina continuous fibers, which are obtained from Shanghai banyan Rong material Co., Ltd, and have a fineness in the range of 55 to 400Tex, and more preferably 125 Tex.
In one embodiment of the present invention, the diameter of the aluminum wire in the step (1) is 0.01 to 0.05 mm.
In one embodiment of the present invention, the alumina fiber bundles described in step (1) and step (2) are not twisted, and all fibers are parallel to each other.
In one embodiment of the present invention, the winding angle in step (2) is 16-20 ° to prepare the coating layer.
In one embodiment of the present invention, the diameter of the continuous alumina-reinforced aluminum-based composite core obtained in step (2) is 0.5 to 0.6 mm.
In one embodiment of the present invention, the temperature of the molten aluminum in the step (3) is 800 ℃, and the immersion time is 10 s.
The second purpose of the invention is to obtain the continuous alumina reinforced aluminum-based composite material core prepared by the method.
The third purpose of the invention is a high-temperature cable, and the core material of the high-temperature cable is the continuous alumina reinforced aluminum-based composite material core.
The fourth object of the present invention is a method for preparing the high temperature cable according to the present invention, comprising the steps of:
and (3) taking the mica tape as a conducting wire outer sleeve of the continuous alumina reinforced aluminum-based composite material core, and further preparing the high-temperature cable.
The fifth purpose of the invention is to apply the continuous alumina reinforced aluminum-based composite material core or the high-temperature cable in the field of power transmission.
[ advantageous effects ]
(1) On one hand, the continuous aluminum oxide reinforced aluminum-based composite material core does not generate an interface effect when combined with aluminum; on the other hand, the defects of long distance, high weight and long-time suspension deformation of the cable line can be effectively solved.
(2) The tensile strength of the continuous alumina reinforced aluminum-based composite material core reaches 22.84kN, the diameter of the material core is less than 0.48mm, the direct current resistance is less than or equal to 2.14, and the highest heat-resistant temperature reaches 1350 ℃.
Drawings
FIG. 1 is a schematic view of a continuous alumina reinforced aluminum matrix composite core clad structure;
FIG. 2 is a top view of a continuous alumina reinforced aluminum matrix composite core;
wherein 1 is a continuous alumina fiber bundle; 2 is an aluminum wire, and 3 is a coated continuous alumina fiber bundle.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of better illustrating the invention and is not intended to limit the invention thereto.
The test method comprises the following steps:
and (3) testing tensile property: the stretching was carried out on an Instron model 3385H universal tester, set at a stretching speed of 2 mm/min.
And (3) testing the conductivity: and cutting a section of prepared wire body, testing the core conductor by using a direct current resistance measuring instrument, and recording the direct current resistance of the core conductor.
Example 1
A method for preparing a continuous alumina reinforced aluminum-based composite core comprises the following steps:
(1) taking a continuous alumina fiber bundle and an aluminum wire as core materials, wherein the continuous alumina fiber bundle is arranged in the middle, and the aluminum wire is arranged around the continuous alumina fiber bundle; wherein the diameter of the aluminum wire is 0.03mm, and the diameter of the continuous alumina fiber bundle is 0.1 mm; the diameter of the core material is 0.4 mm;
(2) winding continuous alumina fibers on the surface of the core material obtained in the step (1) in a spiral mode, wherein the winding angle is 18 degrees, and forming a coating layer to obtain a coating material;
(3) and (3) immersing the coating material obtained in the step (2) in molten aluminum at about 800 ℃ for 10s, and impregnating the molten aluminum matrix into the gaps of the coating material under a non-pressure state to obtain the continuous alumina reinforced aluminum matrix composite core.
Comparative example 1
The alumina fiber bundle in the step (1) is omitted, and the rest is kept consistent with that in the example 1, so that the continuous alumina reinforced aluminum matrix composite core is obtained.
Comparative example 2
The diameter of the alumina fiber bundle in the step (1) of the example 1 is adjusted to be 0.3mm, and the rest is kept consistent with that of the example 1, so that the continuous alumina reinforced aluminum matrix composite core is obtained.
Comparative example 3
The diameter of the core material in the step (1) of the example 1 is adjusted to be 0.45mm, and the rest is kept consistent with that of the example 1, so that the continuous alumina reinforced aluminum matrix composite material core is obtained.
Comparative example 4
And (3) adjusting the winding angle in the step (2) of the example 1 to be 15 degrees, and keeping the winding angle consistent with that of the example 1 to obtain the continuous aluminum oxide reinforced aluminum matrix composite core.
Comparative example 5
And (3) adjusting the winding angle in the step (2) of the example 1 to be 20 degrees, and keeping the winding angle consistent with that of the example 1 to obtain the continuous aluminum oxide reinforced aluminum matrix composite core.
Comparative example 6
The step (3) in example 1 was omitted, and a continuous alumina-reinforced aluminum-based composite core was obtained in keeping with example 1.
Comparative example 7
The step (2) in example 1 was omitted, and a continuous alumina-reinforced aluminum-based composite core was obtained in keeping with example 1.
The continuous alumina reinforced aluminum matrix composite cores obtained in example 1 and comparative examples 1 to 7 were subjected to performance tests, and the test results are shown in table 1 below:
TABLE 1 test results of example 1 and comparative examples 1 to 7
Example (b) Breaking force (kN) Diameter of the Material core (mm) DC resistance (omega/km) Maximum Heat resistance temperature (. degree. C.)
Example 1 22.84 0.55 ≤2.14 1350
Comparative example 1 14.53 0.35 ≤2.14 1250
Comparative example 2 21.12 0.60 ≤2.45 1350
Comparative example 3 21.87 0.62 ≤2.14 1350
Comparative example 4 16.25 0.43 ≤2.14 1330
Comparative example 5 15.86 0.48 ≤2.14 1350
Comparative example 6 14.91 0.49 ≤2.14 1290
Comparative example 7 10.18 0.47 ≤1.98 1200
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A method for preparing a continuous alumina reinforced aluminum-based composite material core is characterized by comprising the following steps:
(1) taking a continuous alumina fiber bundle and an aluminum wire as core materials, wherein the continuous alumina fiber bundle is arranged in the middle, and the aluminum wire is arranged around the continuous alumina fiber bundle; wherein the diameter of the continuous alumina fiber bundle is 0.1-0.2mm, and the diameter of the core material is 0.3-0.4 mm;
(2) winding the surface of the core material obtained in the step (1) in a spiral mode by adopting a continuous alumina fiber bundle to form a coating layer to obtain a coating material;
(3) and (3) compounding the coating material obtained in the step (2) in molten aluminum liquid, and cooling to obtain the continuous aluminum oxide reinforced aluminum-based composite material core.
2. The method as claimed in claim 1, wherein the continuous alumina fiber of step (1) is red feather alumina continuous fiber, which is available from Shanghai banyan Rong-Tu-Mi-Tex New materials Co., Ltd, and has fineness in the range of 55-400 Tex.
3. The method of claim 1 or 2, wherein the molten aluminum of step (3) has a temperature of 800 ℃ and an immersion time of 10 s.
4. The method according to any one of claims 1 to 3, wherein the diameter of the aluminum wire of step (1) is 0.01 to 0.05 mm.
5. The method according to any one of claims 1 to 4, wherein the angle of winding in step (2) is 16 to 20 °.
6. The method according to any one of claims 1 to 5, wherein the continuous alumina-reinforced aluminum-based composite core obtained in step (2) has a diameter of 0.5 to 0.6 mm.
7. A continuous alumina reinforced aluminum matrix composite core prepared by the method of any one of claims 1 to 6.
8. A high temperature cable wherein the core material is the continuous alumina-reinforced aluminum matrix composite core according to claim 7.
9. The method for preparing a high-temperature cable according to claim 8, wherein a mica tape is used as the outer sheath of the continuous alumina-reinforced aluminum-based composite core according to claim 7, and the high-temperature cable is prepared.
10. Use of a continuous alumina reinforced aluminium matrix composite core as claimed in claim 7 or a high temperature cable as claimed in claim 8 in the field of power transmission.
CN202110059947.XA 2021-01-18 2021-01-18 Continuous alumina reinforced metal matrix composite core for high-temperature cable Active CN112908556B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101034601A (en) * 2007-04-16 2007-09-12 中国人民解放军国防科学技术大学 Heat-resisting and low expansion double capacity compound material core aluminum twisted wire and its making method
US20180090241A1 (en) * 2016-09-28 2018-03-29 Fogang Xinyuan Hengye Cable Technology Co., Ltd. Flexible fiber and resin composite core overhead wire and production method thereof
CN108133766A (en) * 2017-11-20 2018-06-08 江苏易成电力器材有限公司 A kind of big section carbon fibre compound core conducting wire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101034601A (en) * 2007-04-16 2007-09-12 中国人民解放军国防科学技术大学 Heat-resisting and low expansion double capacity compound material core aluminum twisted wire and its making method
US20180090241A1 (en) * 2016-09-28 2018-03-29 Fogang Xinyuan Hengye Cable Technology Co., Ltd. Flexible fiber and resin composite core overhead wire and production method thereof
CN108133766A (en) * 2017-11-20 2018-06-08 江苏易成电力器材有限公司 A kind of big section carbon fibre compound core conducting wire

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Inventor after: Guan Ketian

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