CN111554440B - High-strength aluminum alloy power transmission wire - Google Patents
High-strength aluminum alloy power transmission wire Download PDFInfo
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- CN111554440B CN111554440B CN202010308887.6A CN202010308887A CN111554440B CN 111554440 B CN111554440 B CN 111554440B CN 202010308887 A CN202010308887 A CN 202010308887A CN 111554440 B CN111554440 B CN 111554440B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/1815—Protections not provided for in groups H01B7/182 - H01B7/26 composed of longitudinal inserts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Non-Insulated Conductors (AREA)
- Laminated Bodies (AREA)
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Abstract
The invention discloses a high-strength aluminum alloy power transmission conductor which comprises a composite fiber reinforced core and an aluminum alloy conductor layer, wherein the aluminum alloy conductor layer consists of aluminum alloy single wires stranded outside the composite fiber reinforced core; placing the carbon fiber and the basalt fiber on a yarn placing rack for dividing yarns, and drawing the yarns to soak the thermosetting resin composition through a constant-temperature glue groove; the thermosetting resin composition comprises the following components in parts by weight: bisphenol a epoxy resin, phenolic cyanate resin, and hydroxymethyl ethylenediamine; solidifying and molding the carbon fiber and the basalt fiber soaked in the thermosetting resin composition through a heating molding die to prepare a composite fiber reinforced core; and twisting a plurality of aluminum alloy single wires on the outer surface of the composite fiber reinforced core to form an aluminum alloy conductor layer, so as to prepare the high-strength aluminum alloy power transmission conductor. The high-temperature resistance of the high-strength aluminum alloy power transmission wire is greatly improved, the glass transition temperature reaches more than 200 ℃, and the resin can be ensured to work at high temperature for a long time and keep stable performance.
Description
Technical Field
The invention relates to the field of aluminum alloy wires, in particular to a high-strength aluminum alloy power transmission wire.
Background
With the rapid increase of the demand of electric power, the demand of electric power energy in transmission is also higher and higher. High-voltage transmission lines need to pass through various areas, and the requirements of long-span, large-capacity and long-distance conductive wires with special performance are inevitable, so that higher requirements are provided for overhead transmission lines. At present, a lead used in an overhead transmission line basically still mainly comprises a traditional steel-cored aluminum strand, and the heat resistance and the corrosion resistance of the lead are relatively weak, so that the transmission capacity and the service life of the line are limited to a certain extent. The carbon fiber composite core aluminum stranded wire is an updated product of the traditional steel core aluminum stranded wire, the core technology of the aluminum stranded wire lies in the manufacture of a core rod, and the existing composite fiber core rod has the problems of poor heat resistance, poor roundness and the like, thereby influencing the performance of the aluminum stranded wire. Therefore, it is an effort of those skilled in the art to develop an aluminum alloy power transmission wire that overcomes the above-mentioned problems by improving the performance of the core rod.
Disclosure of Invention
The invention aims to provide a high-strength aluminum alloy power transmission wire which is excellent in heat resistance, long in service life when used for laying an overhead power transmission line and capable of effectively reducing maintenance cost.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-strength aluminum alloy power transmission wire comprises a composite fiber reinforced core and an aluminum alloy conductor layer, wherein the aluminum alloy conductor layer consists of aluminum alloy single wires stranded outside the composite fiber reinforced core;
the processing method of the high-strength aluminum alloy power transmission wire comprises the following steps:
s1, placing carbon fibers and basalt fibers on a yarn placing rack for dividing yarns, adjusting the tension of each carbon fiber and basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and basalt fibers to soak a thermosetting resin composition through a constant temperature glue tank;
the thermosetting resin composition comprises the following components in parts by weight: 75 parts of bisphenol A epoxy resin, 18 parts of phenolic cyanate ester resin, 29 parts of hydroxymethyl ethylenediamine, 10 parts of 4, 4' -diphenyl ether bismaleimide, 30 parts of 1, 6-hexanediol diglycidyl ether, 4 parts of 2,4, 6-tri (dimethylaminomethyl) phenol, 1.2 parts of tetra-p-tolyl boronized tetraphenylphosphine, 1 part of 2, 5-dimethoxyphenethylamine, 3.5 parts of gamma-aminopropyltriethoxysilane, 2.5 parts of N-phenyl-2-naphthylamine and 10 parts of liquid nitrile rubber;
s2, solidifying and molding the carbon fibers and the basalt fibers soaked in the thermosetting resin composition through a heating molding die to prepare a composite fiber reinforced core;
s3, processing to obtain an aluminum alloy rod with the diameter of 9.5mm, and drawing by an aluminum alloy wire drawing machine to obtain an aluminum alloy single wire, wherein the aluminum alloy single wire is controlled by the following alloy components in percentage by weight: zr: 0.03-0.2%, Y: 0.01-0.15%, B: 0.02-0.25%, Sc: 0.005-0.01%, impurities less than 0.3%, and the balance of aluminum;
s4, twisting a plurality of aluminum alloy single wires on the outer surface of the composite fiber reinforced core to form an aluminum alloy conductor layer, and manufacturing a high-conductivity heat-resistant aluminum alloy conductor finished product.
The technical scheme of further improvement in the technical scheme is as follows:
1. in the above scheme, the cross-sectional area ratio of the carbon fibers and the basalt fibers is 3: 1-1: 1.
2. in the above scheme, the heating forming die is heated in three regions, and the temperatures in the three regions are respectively: 120-140 ℃, 170 ℃ and 180-195 ℃.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the high-strength aluminum alloy power transmission lead adopts the composite fiber which is prepared by mixing carbon fiber and basalt fiber into a cable and curing and shaping the mixture by the thermosetting resin composition as the reinforcing core, has high tensile strength, light weight and small sag, can increase the overhead span, reduce the height of a frame rod and save the erection cost; the thermosetting resin composition has good bonding performance on carbon fibers and basalt fibers, 4' -diphenyl ether bismaleimide and 2, 5-dimethoxy phenethylamine are added on the basis of epoxy resin and cyanate ester resin, so that the linear shrinkage rate of resin curing is remarkably reduced, the problem of poor roundness of the outer surface of a reinforcing core caused by large shrinkage rate and unstable size of the resin curing is solved, and the structural stability of the prepared aluminum alloy wire is improved.
2. According to the high-strength aluminum alloy power transmission conductor, the thermosetting resin composition used in the preparation process of the composite fiber reinforced core is bisphenol A epoxy resin and phenolic cyanate resin, and tetra-p-tolyl boronized tetraphenylphosphine is added, so that the high-temperature resistance of the high-strength aluminum alloy power transmission conductor is greatly improved on the premise of ensuring the mechanical property of the resin, the glass transition temperature of the high-strength aluminum alloy power transmission conductor reaches above 200 ℃, the resin can be ensured to work at high temperature for a long time and keep stable performance, and the service life of the prepared aluminum alloy conductor is prolonged.
3. The invention relates to a high-strength aluminum alloy power transmission conductor, which adopts aluminum alloy single-wire alloy with the following components in percentage by weight: zr: 0.03-0.2%, Y: 0.01-0.15%, B: 0.02-0.25%, Sc: 0.005-0.01 percent of aluminum alloy, less than 0.3 percent of impurities and the balance of aluminum, the aluminum alloy single wire has low resistivity and good heat resistance, and after high-temperature treatment (230 ℃, 1h/180 ℃, 4h), the tensile strength retention rate is more than 90 percent, so that the operating temperature of the aluminum alloy conductor prepared by the invention is obviously improved.
Detailed Description
The invention is further described below with reference to the following examples:
example (b): a high-strength aluminum alloy power transmission wire comprises a composite fiber reinforced core and an aluminum alloy conductor layer, wherein the aluminum alloy conductor layer consists of aluminum alloy single wires stranded outside the composite fiber reinforced core;
the processing method of the high-strength aluminum alloy power transmission wire comprises the following steps:
s1, placing carbon fibers and basalt fibers on a yarn placing rack for dividing yarns, adjusting the tension of each carbon fiber and basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and basalt fibers to soak a thermosetting resin composition through a constant temperature glue tank;
s2, solidifying and molding the carbon fibers and the basalt fibers soaked in the thermosetting resin composition through a heating molding die to prepare a composite fiber reinforced core;
s3, processing to obtain an aluminum alloy rod with the diameter of 9.5mm, and drawing by an aluminum alloy wire drawing machine to obtain an aluminum alloy single wire 3, wherein the aluminum alloy single wire is controlled by the following alloy components in percentage by weight: zr: 0.03-0.2%, Y: 0.01-0.15%, B: 0.02-0.25%, Sc: 0.005-0.01%, impurities less than 0.3%, and the balance of aluminum;
s4, twisting a plurality of aluminum alloy single wires on the outer surface of the composite fiber reinforced core to form an aluminum alloy conductor layer 2, and manufacturing a high-conductivity heat-resistant aluminum alloy conductor finished product;
the thermosetting resin composition comprises the following components in parts by weight: 75 parts of bisphenol A epoxy resin, 18 parts of phenolic cyanate ester resin, 29 parts of hydroxymethyl ethylenediamine, 10 parts of 4, 4' -diphenyl ether bismaleimide, 30 parts of 1, 6-hexanediol diglycidyl ether, 4 parts of 2,4, 6-tri (dimethylaminomethyl) phenol, 1.2 parts of tetra-p-tolyl boronized tetraphenylphosphine, 1 part of 2, 5-dimethoxyphenethylamine, 3.5 parts of gamma-aminopropyltriethoxysilane, 2.5 parts of N-phenyl-2-naphthylamine and 10 parts of liquid nitrile rubber.
The bisphenol A epoxy resin has an epoxy equivalent of 300 to 500.
Comparative examples 1 to 3: an aluminum alloy power transmission conductor comprises a composite fiber reinforced core and an aluminum alloy conductor layer, wherein the aluminum alloy conductor layer consists of aluminum alloy single wires stranded outside the composite fiber reinforced core;
the preparation method of the aluminum alloy power transmission conductor comprises the following steps:
s1, placing carbon fibers and basalt fibers on a yarn placing rack for dividing yarns, adjusting the tension of each carbon fiber and basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and basalt fibers to soak a thermosetting resin composition through a constant temperature glue tank;
s2, solidifying and molding the carbon fibers and the basalt fibers soaked in the thermosetting resin composition through a heating molding die to prepare a composite fiber reinforced core;
s3, processing to obtain an aluminum alloy rod with the diameter of 9.5mm, and drawing by an aluminum alloy wire drawing machine to obtain an aluminum alloy single wire 3, wherein the aluminum alloy single wire 3 is controlled by the following alloy components in percentage by weight: zr: 0.03-0.2%, Y: 0.01-0.15%, B: 0.02-0.25%, impurities less than 0.3%, and the balance of aluminum;
s4, twisting a plurality of aluminum alloy single lines on the outer surface of the composite fiber reinforced core to form an aluminum alloy conductor layer to prepare an aluminum alloy conductor finished product;
the thermosetting resin composition comprises the following components in parts by weight:
TABLE 1
| Components | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Bisphenol A epoxy resin | 75 | 50 | 65 |
| Phenolic cyanate resin | 5 | 35 | 20 |
| Hydroxymethyl ethylenediamine | 30 | 25 | 29 |
| 4, 4' -Diphenyl ether bismaleimide | - | - | 8 |
| 1, 6-hexanediol diglycidyl ether | 15 | 23 | 30 |
| 2,4, 6-tris (dimethylaminomethyl) phenol | 4 | 2 | 1 |
| Tetrakis-tolyl boronation tetraphenylphosphine | 1.5 | 2 | - |
| 2, 5-Dimethoxyphenethylamine | - | 0.3 | - |
| Gamma-aminopropyl triethoxy siliconAlkane (I) and its preparation method | 3 | 1 | 5 |
| N-phenyl-2-naphthylamine | 2.5 | 0.5 | 1.8 |
| Liquid nitrile rubber | 10 | 3 | 6 |
The bisphenol A epoxy resin has an epoxy equivalent of 300 to 500.
The properties of the products prepared in comparative examples 1 to 3 of the above examples are shown in Table 2:
TABLE 2
As shown in the evaluation results of Table 2, the conductivity and the heat resistance of the aluminum alloy single line in the embodiment of the invention are both better than each proportion, and the operating temperature of the wire is improved; in addition, the thermosetting resin composition adopted in the embodiment of the invention has high glass transition temperature and low curing linear shrinkage rate, can ensure the roundness of the outer surface of the reinforced core when used for preparing the composite fiber reinforced core, can maintain stable performance after long-term operation at high temperature, and improves the safety, stability and reliability of the lead.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. A high-strength aluminum alloy power transmission wire is characterized in that: the high-strength aluminum alloy power transmission wire comprises a composite
The composite fiber reinforced core is made of aluminum alloy single wires stranded outside the composite fiber reinforced core
Composition is carried out;
the processing method of the high-strength aluminum alloy power transmission wire comprises the following steps:
s1, placing the carbon fibers and the basalt fibers on a yarn placing rack for yarn splitting, wherein the tension of each carbon fiber and each basalt fiber is adjusted
The whole is 0.3-0.4 kg, the carbon fiber and the basalt fiber with well adjusted tension and straightness are dehydrated, and then are pulled to be communicated
Infiltrating the thermosetting resin composition in a constant temperature glue tank;
the thermosetting resin composition comprises the following components in parts by weight: 75 parts of bisphenol A epoxy resin and phenolic cyanate ester
18 parts of resin, 29 parts of hydroxymethyl ethylenediamine, 10 parts of 4, 4' -diphenyl ether bismaleimide, 30 parts of 1, 6-hexanediol diglycidyl ether, 4 parts of 2,4, 6-tri (dimethylaminomethyl) phenol, 1.2 parts of tetra-p-tolyl boronized tetraphenylphosphine, 1 part of 2, 5-dimethoxyphenethylamine, 3.5 parts of gamma-aminopropyltriethoxysilane, 2.5 parts of N-phenyl-2-naphthylamine and 10 parts of liquid nitrile rubber;
s2, solidifying and molding the carbon fiber and the basalt fiber soaked in the thermosetting resin composition by a heating and molding die,
preparing a composite fiber reinforced core;
s3, processing to obtain an aluminum alloy rod with the diameter of 9.5mm, and drawing by an aluminum alloy wire drawing machine to obtain an aluminum alloy single wire
The alloy single wire alloy comprises the following components in percentage by weight: zr: 0.03-0.2%, Y: 0.01-0.15%, B: 0.02-0.25%, Sc: 0.005-0.01%, impurities less than 0.3%, and the balance of aluminum;
s4, twisting a plurality of aluminum alloy single wires on the outer surface of the composite fiber reinforced core to form an aluminum alloy conductor layer (2) to manufacture the high-strength aluminum alloy power transmission conductor.
2. A high strength aluminum alloy power transmission wire as defined in claim 1, wherein: the heating forming die is divided into
Three-zone heating, three-zone temperature respectively is: 120-140 ℃, 170 ℃ and 180-195 ℃.
3. A high strength aluminum alloy power transmission wire as defined in claim 1, wherein: the carbon fiber and basalt
The cross-sectional area ratio of the fibers is 3: 1-1: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010308887.6A CN111554440B (en) | 2018-12-27 | 2018-12-27 | High-strength aluminum alloy power transmission wire |
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| CN202010308887.6A CN111554440B (en) | 2018-12-27 | 2018-12-27 | High-strength aluminum alloy power transmission wire |
| CN201811609403.0A CN109887681B (en) | 2018-12-27 | 2018-12-27 | Preparation method of high-conductivity heat-resistant aluminum alloy conductor |
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| CN111554440B true CN111554440B (en) | 2021-10-29 |
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| CN202010045940.8A Active CN111383790B (en) | 2018-12-27 | 2018-12-27 | Processing method of aluminum alloy conductor for power transmission |
| CN201811609403.0A Active CN109887681B (en) | 2018-12-27 | 2018-12-27 | Preparation method of high-conductivity heat-resistant aluminum alloy conductor |
| CN202010046160.5A Active CN111403118B (en) | 2018-12-27 | 2018-12-27 | Manufacturing process of tensile heat-resistant aluminum alloy conductor |
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| CN202010046160.5A Active CN111403118B (en) | 2018-12-27 | 2018-12-27 | Manufacturing process of tensile heat-resistant aluminum alloy conductor |
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| CN111383790A (en) | 2020-07-07 |
| CN111564243A (en) | 2020-08-21 |
| CN111554440A (en) | 2020-08-18 |
| CN111403118A (en) | 2020-07-10 |
| CN109887681B (en) | 2020-05-19 |
| CN111564243B (en) | 2021-10-29 |
| CN109887681A (en) | 2019-06-14 |
| CN111403118B (en) | 2021-09-07 |
| CN111383790B (en) | 2021-10-29 |
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Denomination of invention: High-strength aluminum alloy power transmission wire Effective date of registration: 20220811 Granted publication date: 20211029 Pledgee: China Construction Bank Corporation Limited Wuxiang Sub-branch in Nanning Area, Guangxi Pilot Free Trade Zone Pledgor: GUANGXI ZONGLAN CABLE GROUP CO.,LTD. Registration number: Y2022450000132 |