CN111383792A - CI composite electric conductor and preparation method and application thereof - Google Patents
CI composite electric conductor and preparation method and application thereof Download PDFInfo
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- CN111383792A CN111383792A CN201911221367.5A CN201911221367A CN111383792A CN 111383792 A CN111383792 A CN 111383792A CN 201911221367 A CN201911221367 A CN 201911221367A CN 111383792 A CN111383792 A CN 111383792A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
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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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
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Abstract
The invention provides a CI composite conductor which comprises a conductive frame structure, wherein the conductive frame structure is a hollow structure, and a soft metal layer is arranged in the hollow structure. The conductor has excellent structural performance, corrosion resistance, conductivity and shielding performance, and strong plasticity, and can be structurally adjusted according to different use requirements.
Description
Technical Field
The invention belongs to the field of conductive materials, relates to a composite conductor, and particularly relates to a CI composite conductor and a preparation method and application thereof.
Background
Conductive composite materials are formed by compounding conductive substances or polymers such as carbon fibers, metals, conductive plastics, conductive rubbers and the like in a certain manner, and are generally widely used as insulating materials in the electrical industry, installation engineering, communication engineering and other aspects. However, the conventional conductive composite material has high impedance and poor conductivity, so that static electricity is easy to occur in processing and application, and the conductive composite material has the problems of poor structural performance, easy falling, damage, plastic deformation and the like.
CN 109735844A provides a preparation method of a flexible metal surface functionalized graphene composite film, which comprises the following steps: (1) preparing graphene oxide sheet layers; (2) preparing a functionalized graphene oxide lamellar layer; and (3) forming corrosion-resistant films on different flexible metal substrates by a thermo-mechanical evaporation method by using the reduced graphene oxide lamellar solution or the functionalized graphene oxide lamellar solution prepared in the above manner. The invention has the beneficial effects that: (1) the production cost is low; (2) the selection range of the metal matrix is wider; (3) the functional design is easier to realize.
CN 107331794 a discloses a flexible conductive structure, a manufacturing method thereof, a flexible display panel and a display device, the flexible conductive structure includes: the flexible graphene comprises a substrate, at least two graphene layers and at least one flexible metal conducting layer, wherein the at least two graphene layers and the at least one flexible metal conducting layer are positioned on the substrate; wherein each flexible metal conducting layer is positioned between any two graphene layers. The flexible conductive structure that this technical scheme provided, because graphite alkene layer has better flexibility, set up flexible metal conducting layer between arbitrary two graphite alkene layers, can make this flexible conductive structure, have better flexibility and have good electric conductive property, in addition, can also avoid the metal atom in the flexible metal conducting layer to diffuse other retes, for example in the insulating layer to can prevent to pollute impurity diffusion.
CN104525375A discloses a composite material for electrostatic precipitation, which uses flexible metal foil as a conductive material, instead of a conventional metal plate. The thickness of the metal foil is much smaller than that of the metal plate, so that the manufacturing cost is greatly reduced. The periphery of the flexible metal foil is coated with the insulating material, so that higher electric field voltage and smaller conductive material distance can be adopted, the trapping efficiency of dust, paint mist and the like is improved, and breakdown, arc discharge and ozone generation can be completely avoided. When the insulating material layer adopts a plastic film, the formed composite material has certain plasticity, so that the composite material can be conveniently made into electrostatic fields in various shapes, and the use scenes are enriched. Compared with the adoption of a non-metal conductive material, the resistance of the flexible metal foil is smaller, so that the charging and discharging speed of an electric field is higher, and the field intensity is more uniform.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the CI composite conductor which has excellent structural performance, corrosion resistance, conductivity and shielding performance, is strong in plasticity and can be structurally adjusted according to different use requirements.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention aims to provide a CI composite conductor, which comprises a conductive frame structure, wherein the conductive frame structure is a hollow structure, and a soft metal layer is arranged in the hollow structure.
According to the invention, the composite conductor is formed by using a conductive material as a structural outer layer and using a flexible metal as an inner layer through multiple processes, and has excellent structural performance derived from the outer layer material on the basis of maintaining corrosion resistance and conductivity; the soft metal has better conductivity than the non-soft metal due to high purity, less impurities, and the soft iron can avoid magnetization interference when being applied to metal iron, so that the method is suitable for the field with high requirement on the impedance of the conductive material.
As a preferable embodiment of the present invention, the soft metal layer is partially or completely filled in the hollow structure.
Preferably, the thickness of the soft metal layer is 0.01 to 2mm, such as 0.01mm, 0.05mm, 0.1mm, 0.2mm, 0.5mm, 0.8mm, 1mm, 1.5mm, or 2mm, but not limited to the enumerated values, and other values not enumerated within the numerical range are also applicable.
In the invention, the thickness of the soft material layer does not represent the thickness of the conductive frame body, and the thickness of the conductive frame body is more than or equal to the thickness of the soft material layer. The size of the conductive frame is not limited in the invention, and can be adjusted according to the actual needs of the application.
In a preferred embodiment of the present invention, the conductive frame body includes at least two hollow structures, and the soft metal layers are independently disposed in the hollow structures.
In the present invention, the shape of the conductive frame is not particularly limited, and may be any polygon such as a triangle, a rectangle, a trapezoid, a rhombus, etc., or may be a circle, an ellipse, or a combination pattern of the above, or may be an irregular pattern, and the shape of the conductive frame may be adjusted according to the environment in which it is used.
Wherein whenWhen the conductive frame body is triangular, the area of the triangular frame body is 20-1000mm2E.g. 50mm2、100mm2、200mm2、500mm2Or 800mm2Etc.; when the conductive frame is rectangular, the rectangular frame has dimensions of 10-100mm 2-400mm, such as 20mm 5mm, 30mm 10mm, 40mm 50mm, 50mm 100mm, 60mm 150mm, 70mm 200mm, 80mm 250mm, or 90mm 300 mm; when the conductive frame body is square, the side length of the square frame body is 10-100mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm or 90mm and the like; when the conductive frame is circular, the radius of the circular frame is 10-40mm, such as 15mm, 20mm, 25mm, 30mm or 35mm, but the circular frame is not limited to the illustrated logarithmic values, and other values not illustrated in the above numerical ranges are also applicable.
In a preferred embodiment of the present invention, the conductive frame is made of a conductive material.
Preferably, the conductive material comprises any one of graphene, gold, silver, lead or nickel or a combination of at least two of the following, typical but non-limiting examples being: combinations of graphene and gold, gold and silver, silver and lead, lead and nickel, nickel and graphene, or graphene, gold and silver, and the like.
As a preferred technical solution of the present invention, the material of the soft metal layer is a soft metal material.
The soft metal material comprises any one of soft silver, soft aluminum, soft iron or soft copper or a combination of at least two of the soft silver, the soft aluminum, the soft iron or the soft copper, and typical but non-limiting examples of the combination are as follows: soft silver or a combination of soft aluminum, soft aluminum and soft iron, soft iron and soft copper, soft copper and soft silver, or soft aluminum, soft iron and soft copper, and the like.
The second objective of the present invention is to provide a method for preparing the CI composite conductor, the method comprising:
and preparing the conductive material into a conductive frame body with a hollow structure by using a molding process, and compounding a soft metal material into the hollow structure to obtain the composite conductor.
As a preferable technical scheme of the invention, the forming process is punch forming.
Preferably, the temperature for the press forming is 20 to 40 ℃, such as 22 ℃, 25 ℃, 28 ℃, 30 ℃, 32 ℃, 35 ℃ or 38 ℃, but not limited to the enumerated logarithmic values, and other values not enumerated within the numerical range are also applicable.
Preferably, the pressure for stamping is 1 to 2 atmospheres, such as 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, or 1.9, but not limited to the numerical values listed, and other numerical values not listed in this range are equally applicable.
In the present invention, the forming process of the conductive frame is not particularly limited, the stamping process is only a specific example of the forming of the conductive wide body, the forming process may be a cutting process, a hot pressing process, a pouring process, etc., and the specific process selection may be determined according to the specific material used for the conductive frame.
As the preferable technical scheme of the invention, the compounding method is cold-hot spraying compounding or hot-press molding compounding.
In the invention, the method for compounding cold and hot spraying can be summarized as follows: substrate-outer spray coating-inner spray coating-peripheral spray coating-repeat the above-mentioned spray coating-check the thickness after spray coating-check the appearance of spray coating-check the surface hardness after spray coating-check the resistance of the complex after spray coating.
In the invention, the hot press molding compounding method can be summarized as follows: base material-internal forming-external forming-peripheral surface treatment-checking size-complementary forming-checking size-checking surface hardness-checking formed composite body resistance.
The invention also aims to provide an application of the CI composite electric conductor, and the CI composite electric conductor is applied to the fields of aerospace, navigation manufacturing and automobile manufacturing.
Compared with the prior art, the invention at least has the following beneficial effects:
the invention provides a CI composite conductor and a preparation method and application thereof. The CI composite conductor corrosion resistance test meets the requirement of a salt spray test for more than 1000 hours, the surface is not obviously damaged, the impedance is less than 60 microohm, the structural size can bear free punching riveting deformation, and the extensibility is more than 16%.
Drawings
FIG. 1 is a top view and a side view of a CI composite electrical conductor provided in example 1 of the present invention;
FIG. 2 is a top view and a side view of a CI composite electrical conductor provided in example 2 of the present invention;
FIG. 3 is a top view and a side view of a CI composite electrical conductor provided in example 3 of the present invention;
FIG. 4 is a top view and a side view of a CI composite electrical conductor provided in example 4 of the present invention;
in the figure: 1-conductive frame body, 2-soft metal layer.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:
example 1
This embodiment provides a CI composite electrical conductor having the configuration shown in fig. 1.
The preparation method comprises the following steps:
preparing graphene into a circular conductive frame body (the radius is 25 mm) with a hollow structure by using a stamping process, and compounding a soft silver material into the hollow structure, wherein the thickness of a soft silver layer is 0.01mm, so as to obtain the composite conductor.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 4000 hours (GB/T10125-1997), and the surface of the composite frame body is not obviously damaged or deformed; the impedance test shows that (GB/T351-; the structural size of the composite frame body can bear free stamping riveting deformation, and the elongation rate (GB/T228-2002) of the composite frame body can reach 16%.
Example 2
This embodiment provides a CI composite electrical conductor having the configuration shown in fig. 2.
The preparation method comprises the following steps:
preparing metal nickel into a square conductive frame body (the side length is 25 mm) with a hollow structure by using a stamping process, and compounding a soft aluminum material into the hollow structure, wherein the thickness of a soft aluminum layer is 0.5mm to obtain the composite conductor.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is not obviously damaged or deformed; the impedance test shows (GB/T351-; the structural size of the composite frame body can bear free stamping riveting deformation, and the elongation rate (GB/T228-2002) of the composite frame body can reach 21%.
Example 3
This embodiment provides a CI composite electrical conductor having the configuration shown in fig. 2.
The preparation method comprises the following steps:
preparing metal lead into a rectangular conductive frame body (with the size of 20mm x 40mm) with a hollow structure by using a stamping process, and compounding a soft copper material into the hollow structure, wherein the thickness of the soft copper layer is 1mm to obtain the composite conductor.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is not obviously damaged or deformed; the impedance test shows (GB/T351-; the structural size of the composite frame body can bear free stamping riveting deformation, and the elongation rate (GB/T228-2002) of the composite frame body can reach 25%.
Example 4
This embodiment provides a CI composite electrical conductor having the configuration shown in fig. 2.
The preparation method comprises the following steps:
the metal silver is prepared into a triangular conductive frame body (with the area of 650 mm) with a hollow structure by using a stamping process2) And compounding a soft iron material into the hollow structure, wherein the thickness of the soft iron layer is 2mm, and thus obtaining the composite conductor.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is not obviously damaged or deformed; the impedance test shows (GB/T351-; the structural size of the composite frame body can bear free stamping riveting deformation, and the elongation rate (GB/T228-2002) of the composite frame body can reach 31%.
Comparative example 1
The CI composite conductor provided by this comparative example had the same structure as example 1, except that the soft silver was replaced with the ordinary silver material, and the other conditions were the same as example 1.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is slightly damaged; the impedance test shows (GB/T351-; the structure size of the composite frame bears slight deformation caused by free stamping and riveting, and the elongation rate (GB/T228-.
Comparative example 2
The CI composite conductor provided by this comparative example had the same structure as example 2, except that the soft aluminum was replaced with the hard aluminum material, and the conditions were the same as example 1.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is slightly damaged; the impedance test shows (GB/T351-; the structure size of the composite frame bears slight deformation caused by free stamping and riveting, and the elongation rate (GB/T228-.
Comparative example 3
The CI composite conductor provided by this comparative example had the same structure as example 3, except that the soft copper was replaced with the hard copper material, and the other conditions were the same as example 1.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is slightly damaged; the impedance test shows (GB/T351-; the structural size of the composite frame bears slight deformation caused by free stamping and riveting, and the elongation rate (GB/T228-.
Comparative example 4
The CI composite conductor provided by this comparative example had the same structure as example 4, except that the iron silver was replaced with a hard iron material, and the conditions were the same as example 1.
Tests on the above composite conductive frame body showed that: the corrosion resistance test meets the salt spray test for more than 1000 hours (GB/T10125-1997), and the surface of the composite frame body is slightly damaged; the impedance test shows (GB/T351-; the structural size of the composite frame bears slight deformation caused by free stamping and riveting, and the elongation rate (GB/T228-.
From the above test results, it can be seen that the composite frames provided in examples 1 to 4 of the present invention employ soft metal layers inside, while comparative examples 1 to 4 employ hard iron material layers, and examples 1 to 4 are superior to comparative examples 1 to 4 in salt spray resistance, conductivity, impact resistance, and ductility as a whole.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the technical features described in the above embodiments can be combined in any suitable manner without contradiction, and various possible combinations of the features are not described in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The CI composite conductor is characterized by comprising a conductive frame structure, wherein the conductive frame structure is a hollow structure, and a soft metal layer is arranged in the hollow structure.
2. The composite electrical conductor of claim 1, wherein the soft metal layer partially or completely fills the hollow structure;
preferably, the thickness of the soft metal layer is 0.01-2 mm.
3. The composite electric conductor according to claim 1 or 2, wherein the conductive frame body has at least two hollow structures, and the soft metal layers are independently provided in the hollow structures.
4. The composite electrical conductor according to any one of claims 1 to 3, wherein the material of the electrically conductive frame is an electrically conductive material;
preferably, the conductive material comprises any one of graphene, gold, silver, lead or nickel or a combination of at least two thereof.
5. The composite electrical conductor according to any one of claims 1 to 4, wherein the material of the soft metal layer is a soft metal material;
the soft metal material comprises any one or combination of at least two of soft silver, soft aluminum, soft iron or soft copper.
6. A method of making the CI composite electrical conductor of any one of claims 1-5, wherein the method of making comprises:
and preparing the conductive material into a conductive frame body with a hollow structure by using a molding process, and compounding a soft metal material into the hollow structure to obtain the composite conductor.
7. The method according to claim 6, wherein the molding process is press molding.
8. The preparation method of claim 7, wherein the temperature of the punch forming is 20-40 ℃;
preferably, the pressure of the punch forming is 1-2 atmospheric pressures.
9. The method for preparing the composite material according to any one of claims 6 to 8, wherein the method for compounding is cold thermal spray compounding or hot press molding compounding.
10. Use of a CI composite electrical conductor according to any one of claims 1 to 5 in aerospace, marine manufacturing and automotive applications.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911221367.5A CN111383792A (en) | 2019-12-03 | 2019-12-03 | CI composite electric conductor and preparation method and application thereof |
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| CN201911221367.5A CN111383792A (en) | 2019-12-03 | 2019-12-03 | CI composite electric conductor and preparation method and application thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050238835A1 (en) * | 2004-04-24 | 2005-10-27 | Chien-Min Sung | Graphite composite thermal sealants and associated methods |
| CN1703537A (en) * | 2002-11-07 | 2005-11-30 | 奥托库姆普联合股份公司 | Method for the formation of a good contact surface on an aluminium support bar and a support bar |
| CN101530870A (en) * | 2008-03-10 | 2009-09-16 | 金华市恒飞电工材料有限公司 | New method for preparing copper-aluminum composite pipe |
| CN102226486A (en) * | 2011-06-22 | 2011-10-26 | 天津理工大学 | CuAl bimetallic composite pipe and die extrusion molding method thereof |
| CN103730191A (en) * | 2014-01-15 | 2014-04-16 | 广州迈安特新能源科技有限公司 | Tight type copper aluminum mixed structured cable conductor |
| CN106216425A (en) * | 2016-07-29 | 2016-12-14 | 汉舟四川铜铝复合科技有限公司 | A kind of production method of the copper-aluminum composite conductor rod in equipment for power transmission and distribution |
| CN106448932A (en) * | 2016-11-22 | 2017-02-22 | 湖南三泰新材料股份有限公司 | Method for preparing copper-clad steel composite material |
| CN106782890A (en) * | 2016-12-28 | 2017-05-31 | 汉舟四川铜铝复合科技有限公司 | For transformer and the Copper-Aluminum compound lenticular wire manufacture craft of motor welding equipment |
| CN108346884A (en) * | 2017-01-23 | 2018-07-31 | 徐正华 | Electrical terminal and electrical terminal manufacturing process |
-
2019
- 2019-12-03 CN CN201911221367.5A patent/CN111383792A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703537A (en) * | 2002-11-07 | 2005-11-30 | 奥托库姆普联合股份公司 | Method for the formation of a good contact surface on an aluminium support bar and a support bar |
| US20050238835A1 (en) * | 2004-04-24 | 2005-10-27 | Chien-Min Sung | Graphite composite thermal sealants and associated methods |
| CN101530870A (en) * | 2008-03-10 | 2009-09-16 | 金华市恒飞电工材料有限公司 | New method for preparing copper-aluminum composite pipe |
| CN102226486A (en) * | 2011-06-22 | 2011-10-26 | 天津理工大学 | CuAl bimetallic composite pipe and die extrusion molding method thereof |
| CN103730191A (en) * | 2014-01-15 | 2014-04-16 | 广州迈安特新能源科技有限公司 | Tight type copper aluminum mixed structured cable conductor |
| CN106216425A (en) * | 2016-07-29 | 2016-12-14 | 汉舟四川铜铝复合科技有限公司 | A kind of production method of the copper-aluminum composite conductor rod in equipment for power transmission and distribution |
| CN106448932A (en) * | 2016-11-22 | 2017-02-22 | 湖南三泰新材料股份有限公司 | Method for preparing copper-clad steel composite material |
| CN106782890A (en) * | 2016-12-28 | 2017-05-31 | 汉舟四川铜铝复合科技有限公司 | For transformer and the Copper-Aluminum compound lenticular wire manufacture craft of motor welding equipment |
| CN108346884A (en) * | 2017-01-23 | 2018-07-31 | 徐正华 | Electrical terminal and electrical terminal manufacturing process |
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Application publication date: 20200707 |