CN115602354B - Light aluminum alloy wire bundle for automobile and processing technology thereof - Google Patents
Light aluminum alloy wire bundle for automobile and processing technology thereof Download PDFInfo
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- CN115602354B CN115602354B CN202211206158.5A CN202211206158A CN115602354B CN 115602354 B CN115602354 B CN 115602354B CN 202211206158 A CN202211206158 A CN 202211206158A CN 115602354 B CN115602354 B CN 115602354B
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- 229910001095 light aluminium alloy Inorganic materials 0.000 title claims abstract description 24
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 title claims abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims abstract description 8
- 229910052796 boron Inorganic materials 0.000 claims abstract description 8
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 8
- 239000011777 magnesium Substances 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 238000007670 refining Methods 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 239000011701 zinc Substances 0.000 claims abstract description 8
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 27
- 229920002943 EPDM rubber Polymers 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- OVYTZAASVAZITK-UHFFFAOYSA-M sodium;ethanol;hydroxide Chemical compound [OH-].[Na+].CCO OVYTZAASVAZITK-UHFFFAOYSA-M 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 15
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- 229910021389 graphene Inorganic materials 0.000 claims description 13
- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 claims description 12
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 12
- -1 polypropylene Polymers 0.000 claims description 11
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 229910052582 BN Inorganic materials 0.000 claims description 8
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910021485 fumed silica Inorganic materials 0.000 claims description 7
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 6
- 235000013539 calcium stearate Nutrition 0.000 claims description 6
- 239000008116 calcium stearate Substances 0.000 claims description 6
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 claims description 5
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 claims description 5
- 229940017219 methyl propionate Drugs 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010309 melting process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 5
- 239000011810 insulating material Substances 0.000 abstract description 6
- 239000011162 core material Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000243 solution Substances 0.000 description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 9
- 229910052791 calcium Inorganic materials 0.000 description 9
- 239000011575 calcium Substances 0.000 description 9
- 239000000945 filler Substances 0.000 description 8
- PXMJCECEFTYEKE-UHFFFAOYSA-N Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, methyl ester Chemical compound COC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 PXMJCECEFTYEKE-UHFFFAOYSA-N 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- 229910052748 manganese Inorganic materials 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910052684 Cerium Inorganic materials 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- DWHMMGGJCLDORC-UHFFFAOYSA-N methoxy(methyl)phosphinic acid Chemical compound COP(C)(O)=O DWHMMGGJCLDORC-UHFFFAOYSA-N 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- SONHXMAHPHADTF-UHFFFAOYSA-M sodium;2-methylprop-2-enoate Chemical compound [Na+].CC(=C)C([O-])=O SONHXMAHPHADTF-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- 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
- H01B13/012—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing wire harnesses
-
- 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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of cables, in particular to a light aluminum alloy wire bundle for an automobile and a processing technology thereof. Step 1: melting aluminum, iron, copper, silicon, magnesium, zinc and boron; adding intermediate alloy into a heat preservation furnace, and uniformly fusing; introducing nitrogen for refining and slagging off to obtain an aluminum alloy melt; step 2: flowing the aluminum alloy melt into a casting machine for casting strips; rolling in a rolling mill, and performing heat treatment to obtain an aluminum alloy conductor; carrying out three continuous drawing to obtain an aluminum alloy filament; twisting and annealing the aluminum alloy conductor to obtain an aluminum alloy conductor; step 3: and extruding the aluminum alloy conductive core and the insulating layer material through an extruder to obtain the light aluminum alloy wire bundle. The conductivity and the mechanical property are improved by optimizing the raw materials in the aluminum alloy conductive core, and meanwhile, the material and the proportion of the insulating material are optimized, so that the electrical property and the mechanical property of the insulating layer are improved. Thereby the aluminum alloy wire bundle can meet the high-pressure quick-charging performance of the automobile.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a light aluminum alloy wire bundle for an automobile and a processing technology thereof.
Background
The development of technology is advocated and developed by the great force of clean energy, so that new energy electric automobiles are rapidly developed. In the current stage, one of the core technologies of electric automobiles is a rapid charging technology; and insulated cables are widely studied as cores of electric car charging technologies.
In the current research, copper has high cost and heavy weight, and aluminum has good corrosion resistance and light weight; therefore, in the research of the cable, it is preferable to use an aluminum material as a conductive core and extrude the aluminum alloy wire bundle through an insulating layer to obtain the aluminum alloy wire bundle as the cable material. Wherein, as the iron content of the conductive core material is increased, a coarse needle-shaped iron structure exists, the tensile strength of the conductive core material is reduced, and the strength of the aluminum conductive core is low and the impact resistance is poor; meanwhile, the conductivity of the high-strength aluminum alloy is lower than 50% of that of pure copper, and the conductivity is poor. On the other hand, the conductive performance of the conductive core material is improved, heat accumulation exists in the charging process, so that the aging of the insulating material is accelerated, and the service life of the cable is shortened, therefore, the performance of the conductive core material is improved, and meanwhile, the insulating layer is required to be improved in corresponding performance, so that the conductive core material still has excellent thermal performance and insulating performance under high-power charging performance.
In summary, the above problems are solved, so that the conductive core and the insulating material have mutually matched properties, and the preparation of the light aluminum alloy wire bundle for the automobile has important significance.
Disclosure of Invention
The invention aims to provide a light aluminum alloy wire harness for an automobile and a processing technology thereof, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a processing technology of a light aluminum alloy wire bundle for an automobile comprises the following steps:
step 1: placing aluminum into a smelting furnace, and melting; sequentially adding iron, copper, silicon, magnesium, zinc and boron, and heating and melting in a stepped manner; adding intermediate alloy into a heat preservation furnace, and uniformly fusing; introducing nitrogen for refining and slagging off to obtain an aluminum alloy melt;
step 2: flowing the aluminum alloy melt into a casting machine for casting strips; rolling in a rolling mill, and performing heat treatment to obtain an aluminum alloy conductor; carrying out three continuous drawing to obtain an aluminum alloy filament; twisting and annealing the aluminum alloy conductor to obtain an aluminum alloy conductor;
step 3: and extruding the aluminum alloy conductive core and the insulating layer material through an extruder to obtain the light aluminum alloy wire bundle.
More preferably, in step 1, the raw materials of the aluminum alloy melt include the following components: according to 100 parts by mass, 0.4 to 0.5 part of iron, 0.2 to 0.3 part of copper, 0.04 to 0.08 part of silicon, 0.1 to 0.2 part of magnesium, 0.02 to 0.03 part of zinc, 0.02 to 0.04 part of boron, 1.9 to 1.95 parts of intermediate alloy and the balance of aluminum.
More preferably, the intermediate alloy comprises 0.5 (0.6-0.8) (0.4-0.6) (0.2-0.25) of Al-10Ca, al-10Mn, al-10Ce and Al-10Zr in mass ratio.
More optimally, in the step 1, the melting temperature is 720-750 ℃; in the step-type heating and melting process, the temperature is 800-850-900-1200-1500 ℃ in sequence; the temperature of the holding furnace is 720-750 ℃; in the nitrogen refining process, the gas pressure is 0.4-0.6 MPa, and the flow is 1-2 m 3 And/hr for 20-30 min.
More optimally, in the step 2, during the rolling process, hot rolling is firstly carried out at 480-500 ℃, and then cold rolling is carried out until discharging is carried out, wherein the temperature is 250-280 ℃; the heat treatment temperature is 350-360 ℃ and the time is 2-3 hours; in the three continuous drawing processes, drawing is performed once at 10-30 m/s, drawing is performed twice at 8-10 m/s, and drawing is performed three times at 5-8 m/s; the annealing temperature is 300-350 ℃ and the time is 1-2 hours.
More optimally, in the step 3, the compression ratio of extrusion molding is 1:1.2, the extrusion molding temperature is 160-200 ℃, and the extrusion molding pressure is 8-10 MPa.
More preferably, the insulating layer material comprises the following components: 38-40 parts of modified ethylene propylene diene monomer, 50-55 parts of polypropylene, 7-10 parts of macromolecular antioxidant, 0.8-1 part of dicumyl peroxide, 10-15 parts of boron nitride, 10-15 parts of fumed silica, 8-10 parts of graphene oxide, 1-2 parts of calcium stearate and 2-3 parts of vinyltriethoxysilane.
More optimally, the preparation method of the modified ethylene propylene diene monomer rubber comprises the following steps: placing ethylene propylene diene monomer into a reaction bottle in a nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution at a speed of 100-120 rpm at 60-70 ℃ for 10-15 minutes, and stirring for 5-10 minutes; adding methyl methacrylate, heating to 75-85 ℃, increasing the rotating speed to 200-240 rpm, stirring for 1-2 hours, and evaporating ethanol to obtain modified ethylene propylene diene monomer;
wherein, 100 percent of sodium hydroxide and methyl methacrylate in ethylene propylene diene monomer and sodium hydroxide ethanol solution: (1-1.6): (2.5-4); the concentration of the sodium hydroxide ethanol solution is 10-15 wt%.
More optimally, the preparation method of the macromolecular antioxidant comprises the following steps: dispersing ethylene-vinyl acetate in dimethylbenzene in nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution at the temperature of 135-137 ℃ and the rotating speed of 100-120 rpm for 20-30 minutes, reacting for 30-40 minutes, washing and drying to obtain hydroxylated ethylene-vinyl acetate; sequentially adding hydroxylated ethylene-vinyl acetate, 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate and dimethyl methylphosphonate into a reaction bottle, stirring for 20-30 minutes at 80-85 ℃, adding lithium hydroxide monohydrate, and reacting for 3-4 hours at 155-165 ℃; washing and drying to obtain macromolecular antioxidant;
wherein the mass ratio of the sodium hydroxide in the ethylene-vinyl acetate and sodium hydroxide ethanol solution is 5:0.6-0.8; the mass ratio of the hydroxylated ethylene-vinyl acetate to the 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate to the methylphosphonic acid dimethyl ester is 1:10:5.
More optimally, the light aluminum alloy wire bundle is prepared by the processing technology of the light aluminum alloy wire bundle for the automobile.
In the technical scheme, by introducing calcium, manganese, cerium and zirconium with proper proportions into the aluminum alloy conductive core, the mechanical property is improved on the premise of ensuring high conductivity; on the other hand, the ethylene propylene diene monomer is modified to improve the compatibility with polypropylene, and the electric property and the mechanical property of the insulating layer are improved by cooperating with a macromolecular antioxidant and various fillers. Therefore, the light aluminum alloy wire bundle can meet the requirement of quick charging under high pressure, and the charging performance of the automobile is improved.
(1) In the scheme, the mass ratio of Al-10Ca, al-10Mn and Al-10Ce is 1:1 (1.5-1.75); the introduction of calcium can improve the conductivity of the aluminum alloy conductive core, and the introduction of manganese can increase the precipitation effect, so that intermetallic compounds are arranged along the extrusion direction in the hot rolling process, thereby improving the tensile strength and the elongation at break of the aluminum alloy and obviously improving the strength of the aluminum alloy; however, when calcium and manganese are simultaneously introduced, the conductivity is lowered as compared with the single introduction of calcium. On the other hand, the rare earth cerium is doped, so that coarse needles can be effectively thinned, and the strength of the aluminum alloy conductive core is improved; so as to reduce the introduction amount of manganese and inhibit the reduction of conductivity; the introduction of zirconium can lead the manganese alloy metal to form Al with zirconium 3 Zr-L1 2 Thereby improving the conductivity.
(2) In the scheme, ethylene propylene diene monomer is introduced as an elastomer, so that brittleness of the polypropylene insulating material is inhibited, and impact resistance is improved. Meanwhile, the ethylene propylene diene monomer is grafted in situ under the introduction of sodium hydroxide and methacrylic acid ester, and sodium methacrylate is used as a phase solvent to enhance the crosslinking with polypropylene, so that the tensile strength and the impact toughness are improved.
On the other hand, since small molecule additives such as antioxidants, vulcanizing agents migrate to the surface of the insulating layer during extrusion, mechanical properties are affected and the elongation at break of the insulating layer is deteriorated. Affecting service life and safety. Therefore, in the scheme, firstly, graphene oxide is introduced, and has good pore penetrating capacity for small molecule additives because the graphene oxide is a two-dimensional material, and on the other hand, the edge functional groups of the graphene oxide can generate strong action interfaces with certain molecular chain segments in a polymer matrix, so that the migration of dicumyl peroxide is inhibited by utilizing the characteristics of the graphene oxide. Secondly, ethylene-vinyl acetate is taken as a main body, and is hydrolyzed to generate transesterification reaction with methyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and dimethyl methylphosphonate for grafting, so that a macromolecular antioxidant is formed, and the mobility of the macromolecular antioxidant is effectively inhibited. And because the structure of the ethylene-vinyl acetate is similar to that of a polypropylene main chain, the ethylene-vinyl acetate has good compatibility, and meanwhile, the contained double bond can effectively generate crosslinking with a main substance, and the ethylene-vinyl acetate has toughness, so that the introduction of the ethylene-vinyl acetate further increases the tensile property and the shock resistance. And 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate and methyl methylphosphonate are grafted simultaneously, so that the catalyst has better oxidation resistance compared with single knowledge.
In addition, the introduction of the graphene oxide can improve the thermal stability and the thermal conductivity in cooperation with fumed silica and boron nitride, so that the safety under high current is improved. And the introduction of calcium stearate and vinyl triethoxysilane can effectively enhance the dispersibility of the filler and the interface effect between polymers.
Therefore, by optimizing the proportion, the insulating material has excellent tensile strength and elasticity and excellent electrical insulation, so that the composite high-voltage cable is used.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
step 1: placing aluminum into a smelting furnace at 750 ℃ according to 100 parts by mass, and melting; sequentially adding 0.45 part of iron, 0.3 part of copper, 0.06 part of silicon, 0.15 part of magnesium, 0.03 part of zinc and 0.04 part of boron, and sequentially carrying out stepwise heating melting at 800-850-900-1200-1500 ℃; placing the mixture in a heat preservation furnace at 750 ℃, adding 1.91 parts of intermediate alloy (0.5 part of Al-10Ca, 0.7 part of Al-10Mn, 0.5 part of Al-10Ce and 0.21 part of Al-10 Zr), and uniformly fusing for 2 hours; introducing nitrogen, wherein the gas pressure is 0.5MPa and the flow is 1.5m 3 And/hr, refining for 20 min, and skimming to obtain aluminum alloy melt;
step 2: flowing the aluminum alloy melt into a casting machine, and cooling the casting strip to 450 ℃; rolling in a rolling mill: firstly hot-rolling at 480 ℃, and then cold-rolling to discharge, wherein the temperature is 280 ℃; heat treatment at 350 ℃ for 2 hours; performing heat treatment to obtain an aluminum alloy conductor; it was subjected to three successive drawing: drawing for the next time at 20m/s, drawing for the second time at 10m/s, and drawing for the third time at 5m/s to obtain an aluminum alloy filament; twisting, and annealing for 2 hours at 300 ℃ to obtain an aluminum alloy conductive core;
step 3: (1) Under nitrogen atmosphere, 100g of ethylene propylene diene monomer rubber is placed in a reaction bottle, and sodium hydroxide ethanol solution (1.5 g of sodium hydroxide, 10 wt%) is dropwise added at the speed of 100rpm at 65 ℃ for 15 minutes and stirred for 10 minutes; 3.5g of methyl methacrylate is added, the temperature is raised to 80 ℃, the rotating speed is increased to 200rpm, the mixture is stirred for 1 to 2 hours, and the ethanol is evaporated, so that the modified ethylene propylene diene monomer rubber is obtained, and the equal proportion amplification can be realized.
(2) Dispersing 5g of ethylene-vinyl acetate in 50g of dimethylbenzene under the nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution (0.8 g of sodium hydroxide, 10 wt%) at the temperature of 136 ℃ and the rotating speed of 100rpm for 20 minutes, reacting for 40 minutes, washing and drying to obtain hydroxylated ethylene-vinyl acetate; 1g of hydroxylated ethylene-vinyl acetate, 10g of methyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and 5g of dimethyl methylphosphonate are sequentially added into a reaction bottle, stirred for 30 minutes at 85 ℃, added with 0.2g of lithium hydroxide monohydrate and reacted for 4 hours at 160 ℃; washing and drying to obtain the macromolecular antioxidant which can be amplified in equal proportion.
(3) Adding 2.5 parts by mass of vinyltriethoxysilane into 100 parts by mass of 90wt% ethanol aqueous solution, adding 1.5 parts by mass of calcium stearate, 12 parts by mass of boron nitride, 15 parts by mass of fumed silica and 8 parts by mass of graphene oxide, placing in a ball mill, ball milling for 1 hour at 500rpm, drying to obtain mixed filler, and uniformly mixing the mixed filler with 38 parts by mass of modified ethylene propylene diene monomer, 50 parts by mass of polypropylene, 7 parts by mass of macromolecular antioxidant and 1 part by mass of dicumyl peroxide to obtain an insulating layer material;
(4) And (3) extruding the aluminum alloy conductive core and the insulating layer material through an extruder at the compression ratio of 1:1.2 and the extrusion temperature of 175 ℃ and the extrusion pressure of 8MPa to obtain the light aluminum alloy wire bundle.
Example 2:
step 1: placing aluminum into a smelting furnace at 750 ℃ according to 100 parts by mass, and melting; sequentially adding 0.45 part of iron, 0.3 part of copper, 0.06 part of silicon, 0.15 part of magnesium, 0.03 part of zinc and 0.04 part of boron, and sequentially carrying out stepwise heating melting at 800-850-900-1200-1500 ℃; placing the mixture in a heat preservation furnace at 750 ℃, adding 1.9 parts of intermediate alloy (0.5 part of Al-10Ca, 0.6 part of Al-10Mn, 0.6 part of Al-10Ce and 0.2 part of Al-10 Zr), and uniformly fusing for 2 hours; introducing nitrogen, wherein the gas pressure is 0.5MPa and the flow is 1.5m 3 And/hr, refining for 20 min, and skimming to obtain aluminum alloy melt;
step 2: flowing the aluminum alloy melt into a casting machine, and cooling the casting strip to 450 ℃; rolling in a rolling mill: firstly hot-rolling at 480 ℃, and then cold-rolling to discharge, wherein the temperature is 280 ℃; heat treatment at 350 ℃ for 2 hours; performing heat treatment to obtain an aluminum alloy conductor; it was subjected to three successive drawing: drawing for the next time at 20m/s, drawing for the second time at 10m/s, and drawing for the third time at 5m/s to obtain an aluminum alloy filament; twisting, and annealing for 2 hours at 300 ℃ to obtain an aluminum alloy conductive core;
step 3: (1) Under nitrogen atmosphere, 100g of ethylene propylene diene monomer rubber is placed in a reaction bottle, and sodium hydroxide ethanol solution (1 g of sodium hydroxide, 10 wt%) is dropwise added at the speed of 100rpm at 65 ℃ for 15 minutes, and stirring is carried out for 10 minutes; 2.5g of methyl methacrylate is added, the temperature is raised to 80 ℃, the rotating speed is increased to 200rpm, the mixture is stirred for 1 to 2 hours, and the ethanol is evaporated, so that the modified ethylene propylene diene monomer rubber is obtained, and the equal proportion amplification can be realized.
(2) Dispersing 5g of ethylene-vinyl acetate in 50g of dimethylbenzene under the nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution (0.6 g of sodium hydroxide, 10 wt%) at the temperature of 136 ℃ and the rotating speed of 100rpm for 20 minutes, reacting for 40 minutes, washing and drying to obtain hydroxylated ethylene-vinyl acetate; 1g of hydroxylated ethylene-vinyl acetate, 10g of methyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and 5g of dimethyl methylphosphonate are sequentially added into a reaction bottle, stirred for 30 minutes at 85 ℃, added with 0.2g of lithium hydroxide monohydrate and reacted for 4 hours at 160 ℃; washing and drying to obtain the macromolecular antioxidant which can be amplified in equal proportion.
(3) Adding 2 parts by mass of vinyltriethoxysilane into 100 parts by mass of 90wt% ethanol aqueous solution, adding 2 parts by mass of calcium stearate, 10 parts by mass of boron nitride, 15 parts by mass of fumed silica and 10 parts by mass of graphene oxide, placing in a ball mill, ball milling for 1 hour at 500rpm, drying to obtain mixed filler, and uniformly mixing the mixed filler with 38 parts by mass of modified ethylene propylene diene monomer, 55 parts by mass of polypropylene, 7 parts by mass of macromolecular antioxidant and 0.8 part by mass of dicumyl peroxide to obtain an insulating layer material;
(4) And (3) extruding the aluminum alloy conductive core and the insulating layer material through an extruder at the compression ratio of 1:1.2 and the extrusion temperature of 175 ℃ and the extrusion pressure of 8MPa to obtain the light aluminum alloy wire bundle.
Example 3:
step 1: placing aluminum into a smelting furnace at 750 ℃ according to 100 parts by mass, and melting; sequentially adding 0.45 part of iron, 0.3 part of copper, 0.06 part of silicon, 0.15 part of magnesium, 0.03 part of zinc and 0.04 part of boron, and sequentially carrying out stepwise heating melting at 800-850-900-1200-1500 ℃; placing the mixture in a heat preservation furnace at 750 ℃, adding 1.95 parts of intermediate alloy (0.5 part of Al-10Ca, 0.8 part of Al-10Mn, 0.4 part of Al-10Ce and 0.25 part of Al-10 Zr), and uniformly fusing for 2 hours; introducing nitrogen, wherein the gas pressure is 0.5MPa and the flow is 1.5m 3 And/hr, refining for 20 min, and skimming to obtain aluminum alloy melt;
step 2: flowing the aluminum alloy melt into a casting machine, and cooling the casting strip to 450 ℃; rolling in a rolling mill: firstly hot-rolling at 480 ℃, and then cold-rolling to discharge, wherein the temperature is 280 ℃; heat treatment at 350 ℃ for 2 hours; performing heat treatment to obtain an aluminum alloy conductor; it was subjected to three successive drawing: drawing for the next time at 20m/s, drawing for the second time at 10m/s, and drawing for the third time at 5m/s to obtain an aluminum alloy filament; twisting, and annealing for 2 hours at 300 ℃ to obtain an aluminum alloy conductive core;
step 3: (1) Under nitrogen atmosphere, 100g of ethylene propylene diene monomer rubber is placed in a reaction bottle, and sodium hydroxide ethanol solution (1.6 g of sodium hydroxide, 10 wt%) is dropwise added at the speed of 100rpm at 65 ℃ for 15 minutes and stirred for 10 minutes; adding 4g of methyl methacrylate, heating to 80 ℃, increasing the rotating speed to 200rpm, stirring for 1-2 hours, evaporating ethanol to obtain modified ethylene propylene diene monomer, and amplifying in equal proportion.
(2) Dispersing 5g of ethylene-vinyl acetate in 50g of dimethylbenzene under the nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution (0.8 g of sodium hydroxide, 10 wt%) at the temperature of 136 ℃ and the rotating speed of 100rpm for 20 minutes, reacting for 40 minutes, washing and drying to obtain hydroxylated ethylene-vinyl acetate; 1g of hydroxylated ethylene-vinyl acetate, 10g of methyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and 5g of dimethyl methylphosphonate are sequentially added into a reaction bottle, stirred for 30 minutes at 85 ℃, added with 0.2g of lithium hydroxide monohydrate and reacted for 4 hours at 160 ℃; washing and drying to obtain the macromolecular antioxidant which can be amplified in equal proportion.
(3) Adding 3 parts by mass of vinyltriethoxysilane into 100 parts by mass of 90wt% ethanol aqueous solution, adding 1 part by mass of calcium stearate, 15 parts by mass of boron nitride, 10 parts by mass of fumed silica and 10 parts by mass of graphene oxide, placing in a ball mill, ball milling for 1 hour at 500rpm, drying to obtain mixed filler, and uniformly mixing the mixed filler with 40 parts by mass of modified ethylene propylene diene monomer, 50 parts by mass of polypropylene, 10 parts by mass of macromolecular antioxidant and 1 part by mass of dicumyl peroxide to obtain an insulating layer material;
(4) And (3) extruding the aluminum alloy conductive core and the insulating layer material through an extruder at the compression ratio of 1:1.2 and the extrusion temperature of 175 ℃ and the extrusion pressure of 8MPa to obtain the light aluminum alloy wire bundle.
Comparative example setting:
in comparative example 1, only calcium was introduced singly, and the rest was the same as in example 1;
in comparative example 2, only calcium and manganese were introduced, and the rest was the same as in example 1;
in comparative example 3, only calcium, manganese and cerium were introduced, and the rest was the same as in example 1;
in comparative example 4, ethylene-vinyl acetate, methyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, dimethyl methylphosphonate were directly introduced, and the remainder was the same as in example 1;
in comparative example 5, dimethyl methylphosphonate was not introduced, and the rest was the same as in example 1;
in comparative example 6, ethylene propylene diene monomer was not modified, and the rest was the same as in example 1;
in comparative example 7, graphene oxide was not introduced, and instead thereof, boron nitride was used, and the rest was the same as in example 1.
In the above embodiment, the ethylene propylene diene monomer rubber product number is 722P, and is derived from Ding Xin plastic raw materials limited company in Dongguan city; polypropylene goods No. A0003070, from Henan Wei-Bosch chemical industry Co., ltd; the ethylene-vinyl acetate product number is 24937-78-8, which is from Chongqing Rui ya Biotechnology Co., ltd; the boron nitride product number B106033 and the fumed silica product number S104590 are all from Shanghai Ala Biochemical technology Co., ltd; the graphene oxide product number is A782425, and is from Zhengzhou Convergence chemical industry Co.
Experiment: the aluminum alloy conductive cores and the insulating layer materials prepared in the examples and the comparative examples were subjected to related performance tests. Under the condition of room temperature, measuring the conductivity of the aluminum alloy conductive core by an eddy current method, and testing the tensile strength of the aluminum alloy conductive core by using a universal testing machine to obtain tensile strength A; injection molding an insulating material to obtain a sample of 100×100×0.1mm, testing the tensile strength of the insulating layer by using a universal tester to obtain tensile strength B, and testing the direct-current voltage breakdown strength by using a standard voltage breakdown tester and adopting a double-column test electrode with the diameter of 25mm at a step-up ratio of 1k/V, wherein the data are as follows:
conclusion: the data of examples 1-3 show that the aluminum alloy conductor in the prepared aluminum alloy wire bundle effectively improves the mechanical property on the basis of ensuring high conductivity; the insulating layer has excellent mechanical strength and breakdown strength, and can be matched with high-voltage quick charge. Comparing the data of comparative examples 1-3 with example 1, it was found that the conductivity reached 57.4% when calcium was introduced singly; however, when calcium and manganese are introduced at the same time, the mechanical properties are rapidly increased, but the conductivity is drastically reduced. When calcium manganese cerium was simultaneously introduced, it was found that conductivity was also decreased, but conductivity was increased as compared to comparative example 2, indicating that the introduction of rare earth cerium could increase conductivity. Comparing the data of comparative examples 4 to 7 with example 1, it was found that the direct incorporation of ethylene-vinyl acetate, methyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, dimethyl methylphosphonate, resulted in a decrease in mechanical properties and breakdown strength due to the mobility. Also, in comparative example 7, the mobility of dicumyl peroxide was increased without using graphene oxide, so that the performance was lowered. In contrast, in comparative example 5, dimethyl methylphosphonate was not introduced, so that oxidation resistance was lowered, thereby causing a slight decrease in performance. In comparative example 6, the ethylene propylene diene monomer was not modified, and the compatibility and the crosslinkability were lowered, so that the performance was lowered.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A processing technology of a light aluminum alloy wire bundle for an automobile is characterized by comprising the following steps of: the method comprises the following steps:
step 1: placing aluminum into a smelting furnace, and melting; sequentially adding iron, copper, silicon, magnesium, zinc and boron, and heating and melting in a stepped manner; adding intermediate alloy into a heat preservation furnace, and uniformly fusing; introducing nitrogen for refining and slagging off to obtain an aluminum alloy melt;
step 2: flowing the aluminum alloy melt into a casting machine for casting strips; rolling in a rolling mill, and performing heat treatment to obtain an aluminum alloy conductor; carrying out three continuous drawing to obtain an aluminum alloy filament; twisting and annealing the aluminum alloy conductor to obtain an aluminum alloy conductor;
step 3: extruding the aluminum alloy conductive core and the insulating layer material through an extruder to obtain a light aluminum alloy wire bundle;
wherein, the raw materials of the insulating layer material comprise the following components: 38-40 parts of modified ethylene propylene diene monomer, 50-55 parts of polypropylene, 7-10 parts of macromolecular antioxidant, 0.8-1 part of dicumyl peroxide, 10-15 parts of boron nitride, 10-15 parts of fumed silica, 8-10 parts of graphene oxide, 1-2 parts of calcium stearate and 2-3 parts of vinyl triethoxysilane;
the preparation method of the modified ethylene propylene diene monomer rubber comprises the following steps: placing ethylene propylene diene monomer into a reaction bottle in a nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution at a speed of 100-120 rpm at 60-70 ℃ for 10-15 minutes, and stirring for 5-10 minutes; adding methyl methacrylate, heating to 75-85 ℃, increasing the rotating speed to 200-240 rpm, stirring for 1-2 hours, and evaporating ethanol to obtain modified ethylene propylene diene monomer;
wherein, the mass ratio of sodium hydroxide to methyl methacrylate in the ethylene propylene diene monomer and sodium hydroxide ethanol solution is 100: (1-1.6): (2.5-4); the concentration of the sodium hydroxide ethanol solution is 10-15 wt%;
the preparation method of the macromolecular antioxidant comprises the following steps: dispersing ethylene-vinyl acetate in dimethylbenzene in nitrogen atmosphere, dropwise adding sodium hydroxide ethanol solution at the temperature of 135-137 ℃ and the rotating speed of 100-120 rpm for 20-30 minutes, reacting for 30-40 minutes, washing and drying to obtain hydroxylated ethylene-vinyl acetate; sequentially adding hydroxylated ethylene-vinyl acetate, 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate and dimethyl methylphosphonate into a reaction bottle, stirring for 20-30 minutes at 80-85 ℃, adding lithium hydroxide monohydrate, and reacting for 3-4 hours at 155-165 ℃; washing and drying to obtain macromolecular antioxidant;
wherein the mass ratio of the sodium hydroxide in the ethylene-vinyl acetate and sodium hydroxide ethanol solution is 5:0.6-0.8; the mass ratio of the hydroxylated ethylene-vinyl acetate to the 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate to the methylphosphonic acid dimethyl ester is 1:10:5.
2. The process for manufacturing the light aluminum alloy wire bundle for the automobile according to claim 1, wherein the process comprises the following steps of: in the step 1, the raw materials of the aluminum alloy melt comprise the following components: according to 100 parts by mass, 0.4 to 0.5 part of iron, 0.2 to 0.3 part of copper, 0.04 to 0.08 part of silicon, 0.1 to 0.2 part of magnesium, 0.02 to 0.03 part of zinc, 0.02 to 0.04 part of boron, 1.9 to 1.95 parts of intermediate alloy and the balance of aluminum.
3. The process for manufacturing the light aluminum alloy wire bundle for the automobile according to claim 2, wherein the process comprises the following steps of: the intermediate alloy comprises 0.5 (0.6-0.8), 0.4-0.6, 0.2-0.25 of Al-10Ca, al-10Mn, al-10Ce and Al-10Zr in mass ratio.
4. The process for manufacturing the light aluminum alloy wire bundle for the automobile according to claim 1, wherein the process comprises the following steps of: in the step 1, the melting temperature is 720-750 ℃; in the step-type heating and melting process, the temperature is 800-850-900-1200-1500 ℃ in sequence; the temperature of the holding furnace is 720-750 ℃; in the nitrogen refining process, the gas pressure is 0.4-0.6 MPa, and the flow is 1-2 m 3 And/hr for 20-30 min.
5. The process for manufacturing the light aluminum alloy wire bundle for the automobile according to claim 1, wherein the process comprises the following steps of: in the step 2, during the rolling process, hot rolling is firstly carried out at 480-500 ℃, and then cold rolling is carried out until discharging is carried out, wherein the temperature is 250-280 ℃; the heat treatment temperature is 350-360 ℃ and the time is 2-3 hours; in the three continuous drawing processes, drawing is performed once at 10-30 m/s, drawing is performed twice at 8-10 m/s, and drawing is performed three times at 5-8 m/s; the annealing temperature is 300-350 ℃ and the time is 1-2 hours.
6. The process for manufacturing the light aluminum alloy wire bundle for the automobile according to claim 1, wherein the process comprises the following steps of: in the step 3, the compression ratio of extrusion molding is 1:1.2, the extrusion molding temperature is 160-200 ℃, and the extrusion molding pressure is 8-10 MPa.
7. A light aluminum alloy wire harness produced by the process for producing a light aluminum alloy wire harness for an automobile according to any one of claims 1 to 6.
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