CN111403118B - Manufacturing process of tensile heat-resistant aluminum alloy conductor - Google Patents
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- CN111403118B CN111403118B CN202010046160.5A CN202010046160A CN111403118B CN 111403118 B CN111403118 B CN 111403118B CN 202010046160 A CN202010046160 A CN 202010046160A CN 111403118 B CN111403118 B CN 111403118B
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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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- 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
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- C08L2203/20—Applications use in electrical or conductive gadgets
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
The invention discloses a manufacturing process of a tensile heat-resistant aluminum alloy wire, which comprises the following steps: s1, placing carbon fibers and basalt fibers on a yarn placing rack for dividing yarns, adjusting tension, performing dehydration treatment, and then drawing the yarns to infiltrate 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; 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 high-conductivity heat-resistant aluminum alloy conductor prepared by the invention has good heat resistance, can still maintain stable performance after long-term operation at high temperature, has long service life, and effectively reduces the maintenance cost.
Description
Technical Field
The invention relates to the field of aluminum alloy wires, in particular to a manufacturing process of a tensile heat-resistant aluminum alloy wire.
Background
The electric power is transmitted in long distance, the overground part usually adopts steel-cored aluminum stranded wires, and the underground part adopts an insulated cable with an outer surface extruded with an insulating layer. However, the steel-cored aluminum strand has poor tensile strength, the overhead laying span is limited, and the overhead sag is large, so that the erection cost is high, the external force resistance is poor, and the wire breakage accident is easy to happen when the steel-cored aluminum strand meets sudden external forces such as strong wind and heavy rain.
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 a manufacturing process of a tensile heat-resistant aluminum alloy wire by improving the performance of the core rod.
Disclosure of Invention
The invention aims to provide a manufacturing process of a tensile heat-resistant aluminum alloy wire, the aluminum alloy wire prepared by the manufacturing process has excellent heat resistance, long service life when being used for laying an overhead transmission line, and can effectively reduce maintenance cost.
In order to achieve the purpose, the invention adopts the technical scheme that: a manufacturing process of a tensile heat-resistant aluminum alloy wire comprises a composite fiber reinforced core and an aluminum alloy conductor layer, wherein the aluminum alloy conductor layer is composed of aluminum alloy single wires stranded outside the composite fiber reinforced core;
the manufacturing process of the tensile heat-resistant aluminum alloy wire comprises the following steps:
s1, placing the carbon fibers and the basalt fibers on a yarn placing rack for dividing, adjusting the tension of each carbon fiber and each basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and the basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and the basalt fibers to soak the thermosetting resin composition through a constant temperature glue groove;
the thermosetting resin composition comprises the following components in parts by weight: 50-75 parts of bisphenol A epoxy resin, 15-25 parts of phenolic cyanate ester resin, 25-35 parts of hydroxymethyl ethylenediamine, 5-10 parts of 4, 4' -diphenyl ether bismaleimide, 15-30 parts of 1, 6-hexanediol diglycidyl ether, 0.5-4 parts of 2,4, 6-tri (dimethylaminomethyl) phenol, 0.3-2 parts of tetra-p-tolyl borotetraphenylphosphine, 0.1-1 part of 2, 5-dimethoxyphenethylamine, 1-5 parts of gamma-aminopropyltriethoxysilane, 0.5-3 parts of N-phenyl-2-naphthylamine and 3-10 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 obtain 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 comprises 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;
and 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 carbon fiber is a polyacrylonitrile-based carbon fiber.
2. In the scheme, the epoxy equivalent of the bisphenol A epoxy resin is 300-500.
3. In the above scheme, the heating forming die is heated in three regions.
4. In the above scheme, the three-zone temperatures 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 manufacturing process of the tensile heat-resistant aluminum alloy conductor adopts the composite fiber which is prepared by mixing the carbon fiber and the basalt fiber into a rope 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 the 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 manufacturing process of the tensile heat-resistant aluminum alloy conductor, the thermosetting resin composition used in the preparation process of the composite fiber reinforced core adopts bisphenol A type epoxy resin and phenolic cyanate resin, and tetra-p-tolyl boronized tetraphenylphosphine is added, so that the high temperature resistance of the conductor is greatly improved on the premise of ensuring the mechanical property of the resin, the glass transition temperature reaches more than 200 ℃, the long-term working at high temperature and stable performance of the resin can be ensured, and the service life of the prepared aluminum alloy conductor is prolonged.
3. The invention relates to a manufacturing process of a tensile heat-resistant aluminum alloy wire, 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 ℃,4 h), 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.
Drawings
FIG. 1 is a schematic structural diagram of a tensile heat-resistant aluminum alloy conductor of the invention.
In the above drawings: 1. a composite fiber reinforced core; 2. an aluminum alloy conductor layer; 3. aluminum alloy single line.
Detailed Description
The invention is further described below with reference to the following examples:
example (b): a manufacturing process of a tensile heat-resistant aluminum alloy wire comprises a composite fiber reinforced core 1 and an aluminum alloy conductor layer 2, wherein the aluminum alloy conductor layer 2 consists of an aluminum alloy single wire 3 twisted outside the composite fiber reinforced core 1;
the manufacturing process of the tensile heat-resistant aluminum alloy wire comprises the following steps:
s1, placing the carbon fibers and the basalt fibers on a yarn placing rack for dividing, adjusting the tension of each carbon fiber and each basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and the basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and the basalt fibers to soak the thermosetting resin composition through a constant temperature glue groove;
s2, solidifying and molding the carbon fibers and the basalt fibers soaked in the thermosetting resin composition through a heating molding die to obtain a composite fiber reinforced core 1;
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 comprises 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, stranding a plurality of aluminum alloy single wires 3 on the outer surface of the composite fiber reinforced core 1 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: 50 parts of bisphenol A type epoxy resin, 25 parts of phenolic cyanate resin, 35 parts of hydroxymethyl ethylenediamine, 6 parts of 4, 4' -diphenyl ether bismaleimide, 15 parts of 1, 6-hexanediol diglycidyl ether, 0.5 part of 2,4, 6-tri (dimethylaminomethyl) phenol, 1.5 parts of tetra-p-tolyl boronized tetraphenylphosphine, 0.1 part of 2, 5-dimethoxyphenethylamine, 1 part of gamma-aminopropyltriethoxysilane, 3 parts of N-phenyl-2-naphthylamine and 3 parts of liquid nitrile rubber.
The bisphenol A epoxy resin has an epoxy equivalent of 300 to 500.
Comparative examples 1 to 3: a preparation method of an aluminum alloy conductor comprises a composite fiber reinforced core 1 and an aluminum alloy conductor layer 2, wherein the aluminum alloy conductor layer 2 consists of an aluminum alloy single wire 3 stranded outside the composite fiber reinforced core 1;
the preparation method of the aluminum alloy conductor comprises the following steps:
s1, placing the carbon fibers and the basalt fibers on a yarn placing rack for dividing, adjusting the tension of each carbon fiber and each basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and the basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and the basalt fibers to soak the thermosetting resin composition through a constant temperature glue groove;
s2, solidifying and molding the carbon fibers and the basalt fibers soaked in the thermosetting resin composition through a heating molding die to obtain a composite fiber reinforced core 1;
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 comprises 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, stranding a plurality of aluminum alloy single wires 3 on the outer surface of the composite fiber reinforced core 1 to form an aluminum alloy conductor layer 2, and manufacturing 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- |
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 (5)
1. A manufacturing process of a tensile heat-resistant aluminum alloy wire is characterized by comprising the following steps: the aluminum alloy conductor comprises a composite fiber reinforced core (1) and an aluminum alloy conductor layer (2), wherein the aluminum alloy conductor layer (2) consists of aluminum alloy single wires (3) stranded outside the composite fiber reinforced core (1);
the manufacturing process of the tensile heat-resistant aluminum alloy wire comprises the following steps:
s1, placing the carbon fibers and the basalt fibers on a yarn placing rack for dividing, adjusting the tension of each carbon fiber and each basalt fiber to 0.3-0.4 kg, dehydrating the carbon fibers and the basalt fibers with the adjusted tension and straightness, and then drawing the carbon fibers and the basalt fibers to soak the thermosetting resin composition through a constant temperature glue groove;
the thermosetting resin composition comprises the following components in parts by weight: 50 parts of bisphenol A type epoxy resin, 25 parts of phenolic cyanate ester resin, 35 parts of hydroxymethyl ethylenediamine, 6 parts of 4, 4' -diphenyl ether bismaleimide, 15 parts of 1, 6-hexanediol diglycidyl ether, 0.5 part of 2,4, 6-tri (dimethylaminomethyl) phenol, 1.5 parts of tetra-p-tolyl boronized tetraphenylphosphine, 0.1 part of 2, 5-dimethoxyphenethylamine, 1 part of gamma-aminopropyltriethoxysilane, 3 parts of N-phenyl-2-naphthylamine and 3 parts of liquid nitrile rubber;
s2, solidifying and molding the carbon fiber and the basalt fiber soaked in the thermosetting resin composition through a heating molding die to obtain a composite fiber reinforced core (1);
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%, Sc: 0.005-0.01%, impurities less than 0.3%, and the balance of aluminum;
and S4, twisting a plurality of aluminum alloy single wires (3) on the outer surface of the composite fiber reinforced core (1) to form an aluminum alloy conductor layer (2) to prepare the high-conductivity heat-resistant aluminum alloy conductor finished product.
2. The manufacturing process of the tensile heat-resistant aluminum alloy wire according to claim 1, characterized in that: the carbon fiber is polyacrylonitrile-based carbon fiber.
3. The manufacturing process of the tensile heat-resistant aluminum alloy wire according to claim 1, characterized in that: the heating forming die is heated in three areas.
4. The manufacturing process of the tensile heat-resistant aluminum alloy wire according to claim 3, wherein: the three-zone temperatures are respectively as follows: 120-140 ℃, 170 ℃ and 180-195 ℃.
5. The manufacturing process of the tensile heat-resistant aluminum alloy wire according to claim 1, characterized in that: the bisphenol A epoxy resin has an epoxy equivalent of 300 to 500.
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| CN201811609403.0A CN109887681B (en) | 2018-12-27 | 2018-12-27 | Preparation method of high-conductivity heat-resistant aluminum alloy conductor |
| CN202010046160.5A CN111403118B (en) | 2018-12-27 | 2018-12-27 | Manufacturing process of tensile heat-resistant aluminum alloy conductor |
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Also Published As
| Publication number | Publication date |
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| CN111564243B (en) | 2021-10-29 |
| CN111403118A (en) | 2020-07-10 |
| CN111564243A (en) | 2020-08-21 |
| CN111383790B (en) | 2021-10-29 |
| CN111383790A (en) | 2020-07-07 |
| CN109887681B (en) | 2020-05-19 |
| CN111554440B (en) | 2021-10-29 |
| CN111554440A (en) | 2020-08-18 |
| CN109887681A (en) | 2019-06-14 |
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