CN116469621B - Production process of ultrathin transposed conductor - Google Patents
Production process of ultrathin transposed conductor Download PDFInfo
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- CN116469621B CN116469621B CN202310312809.7A CN202310312809A CN116469621B CN 116469621 B CN116469621 B CN 116469621B CN 202310312809 A CN202310312809 A CN 202310312809A CN 116469621 B CN116469621 B CN 116469621B
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- 239000004020 conductor Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000003973 paint Substances 0.000 claims abstract description 130
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000001035 drying Methods 0.000 claims abstract description 62
- 229910052802 copper Inorganic materials 0.000 claims abstract description 38
- 239000010949 copper Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 23
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims abstract description 9
- 238000005491 wire drawing Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 7
- 239000003607 modifier Substances 0.000 claims description 104
- 238000003756 stirring Methods 0.000 claims description 92
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 52
- 239000000440 bentonite Substances 0.000 claims description 44
- 229910000278 bentonite Inorganic materials 0.000 claims description 44
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 44
- 230000003014 reinforcing effect Effects 0.000 claims description 37
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 36
- 239000000853 adhesive Substances 0.000 claims description 34
- 238000002360 preparation method Methods 0.000 claims description 34
- 239000002904 solvent Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 29
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 29
- 150000002910 rare earth metals Chemical class 0.000 claims description 29
- 239000000243 solution Substances 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 20
- 229920002866 paraformaldehyde Polymers 0.000 claims description 20
- 239000007864 aqueous solution Substances 0.000 claims description 19
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 18
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 16
- 229920001661 Chitosan Polymers 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 15
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 14
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000008096 xylene Substances 0.000 claims description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 9
- 229960005489 paracetamol Drugs 0.000 claims description 9
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 7
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 7
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- YHZCTZGJKHNVQY-LURJTMIESA-N (2s)-2-(diethylazaniumyl)propanoate Chemical compound CCN(CC)[C@@H](C)C(O)=O YHZCTZGJKHNVQY-LURJTMIESA-N 0.000 claims description 6
- 229920000877 Melamine resin Polymers 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 6
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 5
- 206010001497 Agitation Diseases 0.000 claims 1
- 238000013019 agitation Methods 0.000 claims 1
- 238000009941 weaving Methods 0.000 claims 1
- 238000010422 painting Methods 0.000 abstract description 5
- 230000017105 transposition Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 54
- 230000000052 comparative effect Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 14
- 238000004132 cross linking Methods 0.000 description 11
- IEKHISJGRIEHRE-UHFFFAOYSA-N 16-methylheptadecanoic acid;propan-2-ol;titanium Chemical compound [Ti].CC(C)O.CC(C)CCCCCCCCCCCCCCC(O)=O.CC(C)CCCCCCCCCCCCCCC(O)=O.CC(C)CCCCCCCCCCCCCCC(O)=O IEKHISJGRIEHRE-UHFFFAOYSA-N 0.000 description 4
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
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- 239000004922 lacquer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
-
- 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
- H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
- H01B13/165—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying by spraying
-
- 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
- H01B13/30—Drying; Impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a production process of an ultrathin transposed conductor, which comprises the following steps of: step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine; step two: then, acetal paint is coated on the bare copper flat wire through a painting machine, and then primary drying treatment is carried out, so that a bottom paint layer is formed. The invention adopts an up-drawing method to draw a cast copper wire blank, a five-die wire drawing machine to draw the copper wire blank into a bare copper flat wire, then the bare copper flat wire is coated by a painting machine, finally the transposition is carried out, and an insulating net layer is matched, so that the prepared ultrathin transposed conductor has excellent wear resistance, scratch resistance and dielectric property.
Description
Technical Field
The invention relates to the technical field of transposed conductors, in particular to a production process of an ultrathin transposed conductor.
Background
In order to realize low carbon and environmental protection, reduce the production and manufacturing cost of the transformer, and meet the requirements of national advocating low carbon and energy saving economic concepts, environmental protection and resource conservation are realized in an all-round manner, the national power grid is increasingly strict in various performance requirements on transformer products (particularly transformer products with a large number of applied transposition wires in recent years) while a strong power grid is built. The electromagnetic wire is used as a heart of a transformer product, and must be adapted to the development requirements of the transformer product.
The electromagnetic wire has the advantages that various performances of the electromagnetic wire serving as a main matching product of the transformer product play a vital role in the quality of the transformer product, the single-wire thickness of the transposed conductor directly influences performance indexes such as eddy current loss of the transformer product, the larger the single-wire thickness is, the larger the eddy current loss of the transformer is, the conductor thickness of a single enameled wire in the transposed conductor is generally 1.00-2.50mm at present, in order to better reduce the eddy current loss, the hot spot temperature rise of the transformer product is reduced, the transformer product is enabled to run more stably, the purpose of prolonging the service life of the transformer product is achieved, and the ultra-thin transposed conductor with the single-wire thickness of less than 1.00mm is developed by our company in the standing.
The existing ultra-thin transposed conductor production process adopts simple painting raw materials, the painting process is relatively existing, the ultra-thin transposed conductor prepared after painting has poor dielectric property, poor wear resistance and scratch resistance, the dielectric property and the wear resistance and the scratch resistance of the product cannot be improved in a coordinated manner, and the service efficiency of the product is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a production process of an ultrathin transposed conductor, so as to solve the problems in the prior art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a production process of an ultrathin transposed conductor, which comprises the following steps of:
step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine;
step two: then, acetal paint is coated on the bare copper flat wire through a paint coating machine, and then primary drying treatment is carried out to form a bottom paint layer, wherein the thickness of the bottom paint layer is 0.08-0.10mm; then coating the crosslinked modified paint on the surface of the bottom paint layer through a paint coating machine, and performing secondary drying treatment to form a middle paint layer, wherein the thickness of the middle paint layer is 0.03-0.04mm;
step three: coating the middle layer paint layer in the second step with modified self-adhesive paint, and performing secondary drying treatment to form a self-adhesive modified paint layer with the thickness of 0.03-0.04mm, thereby forming an ultrathin enameled copper flat wire;
the preparation method of the modified self-adhesive paint comprises the following steps:
adding 18-20 parts of xylene solvent into 25-30 parts of solid epoxy resin, heating to 42-44 ℃, and stirring at 210-230r/min until the xylene solvent is fully dissolved into transparent liquid;
then adding 15-18 parts of liquid epoxy resin and 3-6 parts of coordination reinforcing modifier, continuously stirring uniformly at normal temperature, and finally adding 1-4 parts of diethyl alanine curing agent, continuously stirring fully to obtain modified self-adhesive paint;
step four: and 7 ultrathin enameled rectangular copper wires in the fourth step are woven into a transposed conductor wire harness through a transposed conductor device, an insulating net is wrapped outside the transposed conductor wire harness by utilizing a wrapping device to form an insulating net layer, the thickness of the insulating net layer is 0.25-0.26mm, and wrapping tension of the insulating net is controlled to be 15N, so that the ultrathin transposed conductor can be manufactured.
Preferably, the conditions of the primary drying, the secondary drying and the tertiary drying are respectively: the lower temperature of the oven is 180-220 ℃, the middle temperature is 250-350 ℃, the upper temperature is 350-450 ℃, and the drying linear speed is 10-15m/min.
Preferably, the preparation method of the crosslinked modified paint comprises the following steps:
s01: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting for 20-25min at 76-82 ℃, then adding terephthalaldehyde, adjusting pH to 7.5, and stirring fully to obtain a paraformaldehyde matrix;
s02: adding silicon carbide whisker into rare earth blending liquid with the ratio of 3-5 times, uniformly stirring, washing with water, and drying to obtain a silicon carbide whisker complex modifier;
s03: the silicon carbide whisker complex modifier comprises the following components in percentage by weight: (9-11) adding the mixture into an ethanol solvent, then adding paraformaldehyde matrix accounting for 15-20% of the total amount of the silicon carbide whisker complex modifier and acetaminophen accounting for 1-5% of the total amount of the silicon carbide whisker complex modifier, and carrying out primary stirring treatment to obtain a modified silicon carbide whisker complex modifier;
s04: adding 2-5% of divinylbenzene, 1-3% of azodiisobutyronitrile and 5-10% of polyvinyl formal resin into the modified silicon carbide whisker compound agent, continuing secondary stirring treatment, and obtaining the crosslinked modified paint after stirring.
Preferably, the rare earth complex-mixing liquid comprises the following raw materials in parts by weight:
30-40 parts of deionized water, 3-5 parts of hydroxyapatite, 2-5 parts of lanthanum sulfate aqueous solution, 0.45-0.65 part of octaphenyl cage-like silsesquioxane and 0.15-0.25 part of silane coupling agent KH560.
Preferably, the mass fraction of the lanthanum sulfate aqueous solution is 5-10%.
Preferably, the preparation method of the coordination reinforcing modifier comprises the following steps:
s11: firstly placing bentonite at 210-220 ℃ for heat treatment for 5-10min, then heating to 300-350 ℃ at the speed of 5 ℃/min, preserving heat for 20-30min, then cooling to 45-50 ℃ at the speed of 1-3 ℃/min, and preserving heat;
s12: placing the S11 heat-preserving product into 3-5 times of hydrochloric acid solution, uniformly stirring, then adding chitosan water solution accounting for 4-8% of the total amount of the S11 heat-preserving product and carboxymethyl cellulose accounting for 1-5% of the total amount of the S11 heat-preserving product, uniformly stirring, washing with water, and drying to obtain a bentonite modifier;
s13: and finally, sending the bentonite modifier into an ethanol solvent which is 3-5 times of the total amount of the bentonite modifier, adding 5-10% of glass fiber and 2-5% of triisostearoyl isopropyl titanate, uniformly stirring, then adding 1-5% of isopropyl tri (dioctyl pyrophosphoric acid acyloxy) titanate of the total amount of the bentonite modifier, fully stirring, and finally washing and drying to obtain the coordination reinforcing modifier.
Preferably, the mass fraction of the hydrochloric acid solution is 8-12%.
Preferably, the mass fraction of the chitosan aqueous solution is 5-10%.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts an upward drawing method to draw a cast copper wire blank, a five-die wire drawing machine to draw the copper wire blank into a bare copper flat wire, then the bare copper flat wire is coated by a painting machine, finally the transposition is carried out, and an insulating net layer is matched, so that the prepared ultrathin transposed conductor has excellent wear resistance, scratch resistance and dielectric property;
2. the bottom layer and the middle layer are coated by acetal paint and crosslinking modified paint in a composite manner, the top paint is modified self-adhesive paint, the primer is acetal paint with good adhesiveness, the adhesiveness of a paint film is improved, the crosslinking modified paint is coated, the crosslinking modified paint has the performance of reinforcing and mutually supporting a product system, the bonding strength between the bottom layer and the modified self-adhesive paint is enhanced, the enameled wire with the composite coating has better adhesiveness of the paint film, higher wear resistance and scratch resistance, the probability of short circuit between strands after a transposed conductor is reduced, the top paint is high-quality modified self-adhesive paint, the enameled wire is ensured to be solidified into a whole after a coil is dried, the short circuit resistance of a transformer is improved, and the wear resistance, the scratch resistance and the dielectric property of the enameled copper flat wire produced by adopting the three paints can be improved in a coordinated manner, and the solvent resistance stability of the product is excellent;
3. the cross-linking modified paint adopts a lanthanum sulfate aqueous solution, octaphenyl cage-shaped silsesquioxane and a silane coupling agent KH560 in the rare earth blending solution to coordinate with a rare earth blending solution for optimization treatment, the modified silicon carbide whisker is optimized, the silicon carbide whisker complex-tuning modifier is conveniently distributed in a multi-active group paraformaldehyde matrix, the matrix strength is improved, the stability of the whole system is improved, the silicon carbide whisker complex-tuning modifier is further coordinated and optimized through acetaminophen, the paraformaldehyde matrix is cooperatively improved, so that under the condition of follow-up divinylbenzene and azodiisobutyronitrile auxiliary agent, the formed cross-linking modified paint has a reticular cross-linking stable system, and is matched with a drying treatment, a three-dimensional reticular cross-linking combination is formed by a bottom paint layer, a middle paint layer and a self-adhesive modified paint layer, the interlayer binding force is improved, the wear resistance and the dielectric property of the system are improved, and finally the modified self-adhesive paint prepared through the epoxy resin matching coordination reinforcing modifier further optimizes the system structure, the performance of the reinforced and mutual product system is improved, and the performance effect of the product is improved;
4. the coordinated reinforcing modifier is prepared by heat treatment of bentonite at 210-220 ℃, heating to 300-350 ℃ at a rate of 5 ℃/min, preserving heat for 20-30min, optimizing a lamellar structure of the bentonite to improve interlayer spacing, and simultaneously optimizing and improving dispersity and activity of the bentonite through coordination of hydrochloric acid solution, chitosan water solution and carboxymethyl cellulose, wherein glass fiber, triisostearyl isopropyl titanate and isopropyl tri (dioctyl pyrophosphoryl) titanate are subjected to coordinated improvement of the bentonite modifier, and the optimized coordinated reinforcing modifier is subjected to coordinated treatment with crosslinked modified paint in a product system to achieve a synergistic effect, so that wear resistance, scratch resistance and dielectric property of the product are improved in a coordinated manner, and meanwhile, the solvent resistance stability of the product is excellent.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.
As shown in fig. 1, the production process of the ultra-thin transposed conductor of this embodiment includes the following steps:
step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine;
step two: then, acetal paint is coated on the bare copper flat wire through a paint coating machine, and then primary drying treatment is carried out to form a bottom paint layer, wherein the thickness of the bottom paint layer is 0.08-0.10mm; then coating the crosslinked modified paint on the surface of the bottom paint layer through a paint coating machine, and performing secondary drying treatment to form a middle paint layer, wherein the thickness of the middle paint layer is 0.03-0.04mm;
step three: coating the middle layer paint layer in the second step with modified self-adhesive paint, and performing secondary drying treatment to form a self-adhesive modified paint layer with the thickness of 0.03-0.04mm, thereby forming an ultrathin enameled copper flat wire;
the preparation method of the modified self-adhesive paint comprises the following steps:
adding 18-20 parts of xylene solvent into 25-30 parts of solid epoxy resin, heating to 42-44 ℃, and stirring at 210-230r/min until the xylene solvent is fully dissolved into transparent liquid;
then adding 15-18 parts of liquid epoxy resin and 3-6 parts of coordination reinforcing modifier, continuously stirring uniformly at normal temperature, and finally adding 1-4 parts of diethyl alanine curing agent, continuously stirring fully to obtain modified self-adhesive paint;
step four: and 7 ultrathin enameled rectangular copper wires in the fourth step are woven into a transposed conductor wire harness through a transposed conductor device, an insulating net is wrapped outside the transposed conductor wire harness by utilizing a wrapping device to form an insulating net layer, the thickness of the insulating net layer is 0.25-0.26mm, and wrapping tension of the insulating net is controlled to be 15N, so that the ultrathin transposed conductor can be manufactured.
The conditions of primary drying, secondary drying and tertiary drying in this embodiment are respectively: the lower temperature of the oven is 180-220 ℃, the middle temperature is 250-350 ℃, the upper temperature is 350-45 ℃ and the drying linear speed is 10-15m/min.
The preparation method of the crosslinked modified paint of the embodiment comprises the following steps:
s01: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting for 20-25min at 76-82 ℃, then adding terephthalaldehyde, adjusting pH to 7.5, and stirring fully to obtain a paraformaldehyde matrix;
s02: adding silicon carbide whisker into rare earth blending liquid with the ratio of 3-5 times, uniformly stirring, washing with water, and drying to obtain a silicon carbide whisker complex modifier;
s03: the silicon carbide whisker complex modifier comprises the following components in percentage by weight: (9-11) adding the mixture into an ethanol solvent, then adding paraformaldehyde matrix accounting for 15-20% of the total amount of the silicon carbide whisker complex modifier and acetaminophen accounting for 1-5% of the total amount of the silicon carbide whisker complex modifier, and carrying out primary stirring treatment to obtain a modified silicon carbide whisker complex modifier;
s04: adding 2-5% of divinylbenzene, 1-3% of azodiisobutyronitrile and 5-10% of polyvinyl formal resin into the modified silicon carbide whisker compound agent, continuing secondary stirring treatment, and obtaining the crosslinked modified paint after stirring.
The rotational speed of the primary stirring treatment is 450-500r/min, and the stirring time is 20-30min; the rotation speed of the secondary stirring treatment is 200-220r/min, and the stirring time is 45-55min.
The rare earth complex-mixing liquid in the embodiment comprises the following raw materials in parts by weight:
30-40 parts of deionized water, 3-5 parts of hydroxyapatite, 2-5 parts of lanthanum sulfate aqueous solution, 0.45-0.65 part of octaphenyl cage-like silsesquioxane and 0.15-0.25 part of silane coupling agent KH560.
The mass fraction of the lanthanum sulfate aqueous solution in the embodiment is 5-10%.
The preparation method of the coordination reinforcing modifier comprises the following steps:
s11: firstly placing bentonite at 210-220 ℃ for heat treatment for 5-10min, then heating to 300-350 ℃ at the speed of 5 ℃/min, preserving heat for 20-30min, then cooling to 45-50 ℃ at the speed of 1-3 ℃/min, and preserving heat;
s12: placing the S11 heat-preserving product into 3-5 times of hydrochloric acid solution, uniformly stirring, then adding 4-8% of chitosan water solution and 1-5% of carboxymethyl cellulose into the total amount of the 11 heat-preserving product, uniformly stirring, washing with water, and drying to obtain a bentonite modifier;
s13: and finally, sending the bentonite modifier into an ethanol solvent which is 3-5 times of the total amount of the bentonite modifier, adding 5-10% of glass fiber and 2-5% of triisostearoyl isopropyl titanate, uniformly stirring, then adding 1-5% of isopropyl tri (dioctyl pyrophosphoric acid acyloxy) titanate of the total amount of the bentonite modifier, fully stirring, and finally washing and drying to obtain the coordination reinforcing modifier.
The mass fraction of the hydrochloric acid solution in this example is 8-12%.
The mass fraction of the chitosan aqueous solution of the embodiment is 5-10%.
Example 1.
The production process of the ultrathin transposed conductor comprises the following steps:
step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine;
step two: then, acetal paint is coated on the bare copper flat wire through a paint coating machine, and then primary drying treatment is carried out to form a bottom paint layer, wherein the thickness of the bottom paint layer is 0.08mm; then coating the crosslinked modified paint on the surface of the bottom paint layer through a paint coating machine, and performing secondary drying treatment to form a middle paint layer with the thickness of 0.03mm;
step three: coating the middle layer paint layer in the second step with modified self-adhesive paint, and performing secondary drying treatment to form a self-adhesive modified paint layer with the thickness of 0.03mm, thereby forming an ultrathin enameled copper flat wire;
the preparation method of the modified self-adhesive paint comprises the following steps:
adding 18 parts of xylene solvent into 25 parts of solid epoxy resin, heating to 42 ℃, and stirring at 210r/min until the xylene solvent is fully dissolved into transparent liquid;
then adding 15 parts of liquid epoxy resin and 3 parts of coordination reinforcing modifier, continuously stirring uniformly at normal temperature, and finally adding 1 part of diethyl alanine curing agent, continuously stirring fully to obtain modified self-adhesive paint;
step five: and 7 ultrathin enameled rectangular copper wires in the fourth step are woven into a transposed conductor wire harness through a transposed conductor device, an insulating net is wrapped outside the transposed conductor wire harness by utilizing a wrapping device to form an insulating net layer, the thickness of the insulating net layer is 0.25mm, and wrapping tension of the insulating net is controlled to be 15N, so that the ultrathin transposed conductor can be manufactured.
The conditions of primary drying, secondary drying and tertiary drying in this embodiment are respectively: the lower temperature of the oven is 180 ℃, the middle temperature is 250 ℃, the upper temperature is 350 ℃, and the drying linear speed is 10m/min.
The preparation method of the crosslinked modified paint of the embodiment comprises the following steps:
s01: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 76 ℃ for 25min, then adding terephthalaldehyde, adjusting pH to 7.5, and stirring fully to obtain a paraformaldehyde matrix;
s02: adding silicon carbide whisker into 3 times of rare earth blending liquid, uniformly stirring, washing with water, and drying to obtain a silicon carbide whisker complex-mixing modifier;
s03: the silicon carbide whisker complex modifier comprises the following components in percentage by weight: 3 adding the mixture into an ethanol solvent, then adding a paraformaldehyde matrix accounting for 15% of the total amount of the silicon carbide whisker complex modifier and acetaminophen accounting for 1% of the total amount of the silicon carbide whisker complex modifier, and carrying out primary stirring treatment to obtain a modified silicon carbide whisker complex modifier;
s04: adding divinylbenzene accounting for 2 percent of the total amount of the modified silicon carbide whisker compound agent, azodiisobutyronitrile accounting for 1 percent and polyvinyl formal resin accounting for 5 percent into the modified silicon carbide whisker compound agent, continuing the secondary stirring treatment, and obtaining the crosslinked modified paint after the stirring is finished.
The rotational speed of the primary stirring treatment in the embodiment is 450r/min, and the stirring time is 20min; the rotation speed of the secondary stirring treatment is 200r/min, and the stirring time is 45min.
The rare earth complex-mixing liquid in the embodiment comprises the following raw materials in parts by weight:
30 parts of deionized water, 3 parts of hydroxyapatite, 2 parts of lanthanum sulfate aqueous solution, 0.45 part of octaphenyl cage-like silsesquioxane and 0.15 part of silane coupling agent KH560.
The mass fraction of the aqueous lanthanum sulfate solution of this example was 5%.
The preparation method of the coordination reinforcing modifier comprises the following steps:
s11: firstly, putting bentonite at 210 ℃ for heat treatment for 5min, then heating to 300 ℃ at the rate of 5 ℃/min, preserving heat for 20min, then cooling to 45 ℃ at the rate of 1 ℃/min, and preserving heat;
s12: placing the S11 heat-preserving product into a hydrochloric acid solution with the concentration of 3 times, uniformly stirring, adding a chitosan water solution with the concentration of 4% of the total amount of the 11 heat-preserving product and carboxymethyl cellulose with the concentration of 1%, uniformly stirring, washing with water, and drying to obtain a bentonite modifier;
s13: and finally, sending the bentonite modifier into an ethanol solvent which is 3 times of the total amount of the bentonite modifier, adding glass fiber accounting for 5 percent of the total amount of the bentonite modifier and isopropyl triisostearoyl titanate accounting for 2 percent of the total amount of the bentonite modifier, uniformly stirring, then adding isopropyl tri (dioctyl pyrophosphoryl oxy) titanate accounting for 1 percent of the total amount of the bentonite modifier, fully stirring, and finally, washing and drying to obtain the coordinated reinforcing modifier.
The mass fraction of the hydrochloric acid solution of this example was 8%.
The mass fraction of the chitosan aqueous solution of this example was 5%.
Example 2.
The production process of the ultrathin transposed conductor comprises the following steps:
step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine;
step two: then, acetal paint is coated on the bare copper flat wire through a paint coating machine, and then primary drying treatment is carried out to form a bottom paint layer, wherein the thickness of the bottom paint layer is 0.10mm; then coating the crosslinked modified paint on the surface of the bottom paint layer through a paint coating machine, and performing secondary drying treatment to form a middle paint layer with the thickness of 0.04mm;
step three: coating the middle layer paint layer in the second step with modified self-adhesive paint, and performing secondary drying treatment to form a self-adhesive modified paint layer with the thickness of 0.04mm, thereby forming an ultrathin enameled copper flat wire;
the preparation method of the modified self-adhesive paint comprises the following steps:
adding 20 parts of xylene solvent into 30 parts of solid epoxy resin, heating to 44 ℃, and stirring at 230r/min until the xylene solvent is fully dissolved into transparent liquid;
then adding 18 parts of liquid epoxy resin and 6 parts of coordination reinforcing modifier, continuously stirring uniformly at normal temperature, and finally adding 4 parts of diethyl alanine curing agent, continuously stirring fully to obtain modified self-adhesive paint;
step five: and 7 ultrathin enameled rectangular copper wires in the fourth step are woven into a transposed conductor wire harness through a transposed conductor device, an insulating net is wrapped outside the transposed conductor wire harness by utilizing a wrapping device to form an insulating net layer, the thickness of the insulating net layer is 0.26mm, and wrapping tension of the insulating net is controlled to be 15N, so that the ultrathin transposed conductor can be manufactured.
The conditions of primary drying, secondary drying and tertiary drying in this embodiment are respectively: the lower temperature of the oven is 220 ℃, the middle temperature is 350 ℃, the upper temperature is 450 ℃, and the drying linear speed is 15m/min.
The preparation method of the crosslinked modified paint of the embodiment comprises the following steps:
s01: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 82 ℃ for 25min, then adding terephthalaldehyde, adjusting pH to 7.5, and stirring fully to obtain a paraformaldehyde matrix;
s02: adding silicon carbide whisker into 5 times of rare earth blending liquid, uniformly stirring, washing with water, and drying to obtain a silicon carbide whisker complex-mixing modifier;
s03: the silicon carbide whisker complex modifier comprises the following components in percentage by weight: 11, adding the mixture into an ethanol solvent, then adding a paraformaldehyde matrix accounting for 20% of the total amount of the silicon carbide whisker complex modifier and acetaminophen accounting for 5% of the total amount of the silicon carbide whisker complex modifier, and carrying out primary stirring treatment to obtain a modified silicon carbide whisker complex modifier;
s04: adding divinylbenzene accounting for 5 percent of the total amount of the modified silicon carbide whisker compound agent, azodiisobutyronitrile accounting for 3 percent and polyvinyl formal resin accounting for 10 percent into the modified silicon carbide whisker compound agent, continuing the secondary stirring treatment, and obtaining the crosslinked modified paint after the stirring is finished.
The rotational speed of the primary stirring treatment in the embodiment is 500r/min, and the stirring time is 30min; the rotation speed of the secondary stirring treatment is 220r/min, and the stirring time is 55min.
The rare earth complex-mixing liquid in the embodiment comprises the following raw materials in parts by weight:
40 parts of deionized water, 5 parts of hydroxyapatite, 5 parts of lanthanum sulfate aqueous solution, 0.65 part of octaphenyl cage-like silsesquioxane and 0.25 part of silane coupling agent KH560.
The mass fraction of the aqueous lanthanum sulfate solution of this example was 10%.
The preparation method of the coordination reinforcing modifier comprises the following steps:
s11: firstly, putting bentonite at 220 ℃ for heat treatment for 10min, then heating to 350 ℃ at the speed of 5 ℃/min, preserving heat for 30min, then cooling to 50 ℃ at the speed of 3 ℃/min, and preserving heat;
s12: placing the S11 heat-preserving product into 5 times of hydrochloric acid solution, uniformly stirring, then adding 8% of chitosan water solution and 5% of carboxymethyl cellulose of the total amount of the S11 heat-preserving product, uniformly stirring, washing with water, and drying to obtain a bentonite modifier;
s13: and finally, sending the bentonite modifier into an ethanol solvent which is 5 times of the total amount of the bentonite modifier, adding glass fiber accounting for 10 percent of the total amount of the bentonite modifier and isopropyl triisostearoyl titanate accounting for 5 percent of the total amount of the bentonite modifier, uniformly stirring, then adding isopropyl tri (dioctyl pyrophosphoryl oxy) titanate accounting for 5 percent of the total amount of the bentonite modifier, fully stirring, and finally, washing and drying to obtain the coordination reinforcing modifier.
The mass fraction of the hydrochloric acid solution of this example was 12%.
The mass fraction of the chitosan aqueous solution of this example was 10%.
Example 3.
The production process of the ultrathin transposed conductor comprises the following steps:
step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine;
step two: then, acetal paint is coated on the bare copper flat wire through a paint coating machine, and primary drying treatment is carried out to form a bottom paint layer, wherein the thickness of the bottom paint layer is 0.09mm; then coating the crosslinked modified paint on the surface of the bottom paint layer through a paint coating machine, and performing secondary drying treatment to form a middle paint layer with the thickness of 0.035mm;
step three: coating the middle layer paint layer in the second step with modified self-adhesive paint, and performing secondary drying treatment to form a self-adhesive modified paint layer with the thickness of 0.035mm, thereby forming an ultrathin enameled copper flat wire;
the preparation method of the modified self-adhesive paint comprises the following steps:
adding 19 parts of xylene solvent into 27 parts of solid epoxy resin, heating to 43 ℃, and stirring at 220r/min until the xylene solvent is fully dissolved into transparent liquid;
then adding 16 parts of liquid epoxy resin and 4.5 parts of coordination reinforcing modifier, continuously and uniformly stirring at normal temperature, and finally adding 2.5 parts of diethyl alanine curing agent, continuously and fully stirring to obtain modified self-adhesive paint;
step five: and 7 ultrathin enameled rectangular copper wires in the fourth step are woven into a transposed conductor wire harness through a transposed conductor device, an insulating net is wrapped outside the transposed conductor wire harness by utilizing a wrapping device to form an insulating net layer, the thickness of the insulating net layer is 0.25mm, and wrapping tension of the insulating net is controlled to be 15N, so that the ultrathin transposed conductor can be manufactured.
The conditions of primary drying, secondary drying and tertiary drying in this embodiment are respectively: the lower temperature of the oven is 200 ℃, the middle temperature is 270 ℃, the upper temperature is 400 ℃, and the drying linear speed is 12m/min.
The preparation method of the crosslinked modified paint of the embodiment comprises the following steps:
s01: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 80 ℃ for 22min, then adding terephthalaldehyde, adjusting pH to 7.5, and stirring fully to obtain a paraformaldehyde matrix;
s02: adding silicon carbide whisker into rare earth blending liquid of 4 times, uniformly stirring, washing with water, and drying to obtain a silicon carbide whisker complex-mixing modifier;
s03: the silicon carbide whisker complex modifier comprises the following components in percentage by weight: 10, adding the mixture into an ethanol solvent, then adding a paraformaldehyde matrix accounting for 17% of the total amount of the silicon carbide whisker complex modifier and acetaminophen accounting for 3% of the total amount of the silicon carbide whisker complex modifier, and carrying out primary stirring treatment to obtain a modified silicon carbide whisker complex modifier;
s04: adding divinylbenzene accounting for 3.5 percent of the total amount of the modified silicon carbide whisker compound agent, azobisisobutyronitrile accounting for 2 percent and polyvinyl formal resin accounting for 7.5 percent into the modified silicon carbide whisker compound agent, continuing the secondary stirring treatment, and obtaining the crosslinked modified paint after the stirring is finished.
The rotational speed of the primary stirring treatment in the embodiment is 470r/min, and the stirring time is 25min; the rotation speed of the secondary stirring treatment is 210r/min, and the stirring time is 50min.
The rare earth complex-mixing liquid in the embodiment comprises the following raw materials in parts by weight:
35 parts of deionized water, 4 parts of hydroxyapatite, 3.5 parts of lanthanum sulfate aqueous solution, 0.50 part of octaphenyl cage-like silsesquioxane and 0.20 part of silane coupling agent KH560.
The mass fraction of the aqueous lanthanum sulfate solution of this example was 7.5%.
The preparation method of the coordination reinforcing modifier comprises the following steps:
s11: firstly, putting bentonite at 215 ℃ for heat treatment for 7.5min, then heating to 320 ℃ at the speed of 5 ℃/min, preserving heat for 25min, then cooling to 47 ℃ at the speed of 2 ℃/min, and preserving heat;
s12: placing the S11 heat-preserving product into 4 times of hydrochloric acid solution, uniformly stirring, then adding the chitosan aqueous solution accounting for 6% of the total amount of the 11 heat-preserving product and the carboxymethyl cellulose accounting for 3%, uniformly stirring, washing with water, and drying to obtain the bentonite modifier;
s13: and finally, sending the bentonite modifier into an ethanol solvent which is 4 times of the total amount of the bentonite modifier, adding glass fiber which is 7.5 percent of the total amount of the bentonite modifier and isopropyl triisostearoyl titanate which is 3.5 percent of the total amount of the bentonite modifier, uniformly stirring, then adding isopropyl tri (dioctyl pyrophosphoryl) titanate which is 3 percent of the total amount of the bentonite modifier, fully stirring, and finally washing and drying to obtain the coordination reinforcing modifier.
The mass fraction of the hydrochloric acid solution of this example was 10%.
The mass fraction of the chitosan aqueous solution of this example was 7.5%.
Comparative example 1.
The difference from example 3 is that no crosslinking modified lacquer treatment is used.
Comparative example 2.
The difference from example 3 is that no silicon carbide whisker complex modifier is added to the crosslinked modified paint.
Comparative example 3.
The difference from example 3 is that no acetaminophen was added to the crosslinked modified paint.
Comparative example 4.
The difference from example 3 is that rare earth blending liquid is not added in the preparation of the silicon carbide whisker complex modifier.
Comparative example 5.
In the preparation of the crosslinked modified paint, the primary stirring treatment was not employed, unlike in example 3.
Comparative example 6.
The difference from example 3 is that no modified self-adhesive paint treatment was used.
Comparative example 7.
The difference from example 3 is that no harmonizing reinforcing modifier is added to the modified self-adhesive paint.
Comparative example 8.
The difference from example 3 is that the harmonized reinforcement modifier is directly replaced by bentonite raw material.
Comparative example 9.
The difference from example 3 is that no aqueous chitosan solution was added in the preparation of the co-ordinated reinforcing modifier.
Comparative example 10.
The difference from example 3 is that no glass fibers are added in the preparation of the harmonized reinforcing modifier.
Comparative example 11.
The difference from example 3 is that no isopropyl triisostearoyl titanate was added in the preparation of the co-ordinated reinforcing modifier.
The products of examples 1-3 and comparative examples 1-11 were subjected to conventional performance, and after being immersed in an acetone solvent for 48 hours, the solvent resistance was measured, and the dielectric properties, abrasion resistance and scratch resistance were measured;
as can be seen from comparative examples 1 to 11 and examples 1 to 3; the product of the embodiment 3 has excellent wear resistance, scratch resistance and dielectric strength performance, and the product performance can have obvious coordinated improvement effect; the solvent resistance stability of the product is excellent;
as can be seen from comparative examples 1 to 5 and example 3, the dielectric strength, abrasion resistance and scratch resistance of the product are obviously reduced without the treatment of crosslinking modified paint, and the solvent resistance stability of the product is obviously reduced; the silicon carbide whisker complex-mixing modifier and the acetaminophen are not added in the crosslinking modified paint, the performance of the product is prone to be deteriorated, meanwhile, the rare earth mixing liquid is not added in the preparation of the silicon carbide whisker complex-mixing modifier, the performance of the product is obviously changed, primary stirring treatment is not adopted, and the performance of the product is prone to be deteriorated; only the modified treatment of the cross-linked modified paint prepared by the method has the most obvious performance effect, and other methods are adopted to replace the modified paint, so that the modified paint has less obvious effect than the modified paint;
as shown in comparative examples 6 to 7, comparative example 1 and example 3, the properties of the products are remarkably deteriorated without any of the treatment of crosslinking modified paint and the treatment of modified self-adhesive paint, and only the cooperation of the two is adopted, so that the properties of the products are synergistically enhanced, and the properties of the products, the compatibility and the solvent resistance stability of the products are remarkably improved; and the inventor of the invention finds that no coordination reinforcing modifier is added in the modified self-adhesive paint, and the performance change of the product is obvious; the trend of the coordination reinforcing modifier on the performance of the product in the modified self-adhesive paint is large, and the coordination reinforcing modifier has important action and effect;
from comparative examples 7 to 11, it can be seen that the performance of the product is degraded when the coordination reinforcing modifier is not added and directly replaced by the bentonite raw material, and the performance of the product is worse than that of the product when the coordination reinforcing modifier is not added under the condition of solvent resistance because the coordination reinforcing modifier is directly replaced by the bentonite raw material, and the coordination reinforcing modifier can be applied to the product after the bentonite is modified by adopting the process of the invention; the preparation of the coordination reinforcing modifier is not added with chitosan aqueous solution, glass fiber or triisostearyl isopropyl titanate, the performance of the product is prone to be deteriorated, and meanwhile, the glass fiber is not added, the performance of the product is more obvious in the preparation of the coordination reinforcing modifier, the glass fiber can cooperate with other coordination interaction effects of raw materials in the coordination reinforcing modifier, the performance effect of the product is enhanced, the wear resistance, scratch resistance and dielectric strength performance of the product are optimized, the product performance can achieve obvious coordination improvement effect, the solvent resistance stability of the product is excellent, and the performance of the product of the coordination reinforcing modifier prepared by the method is the most obvious, and the substitution of other methods is not as obvious as the effect of the invention.
The test shows that the performance effect of the rare earth complex-mixing liquid on the product is greatly changed, and based on the performance effect, the invention further explores and processes the rare earth complex-mixing liquid:
experimental example 1
The raw materials are the same as those of the product of example 3, except that the rare earth complex-preparation liquid is not added with lanthanum sulfate aqueous solution.
Experimental example 2
The raw materials are the same as those of the product of example 3, except that hydroxyapatite is not added into the rare earth complex mixture.
Experimental example 3
The raw materials are the same as those of the product of example 3, except that octaphenyl cage-like silsesquioxane is not added into the rare earth complex prescription liquid.
Experimental example 4
The raw materials are the same as those of the product of example 3, except that the rare earth complex formulation liquid is not added with a silane coupling agent KH560.
Experimental example 5
The same raw materials as those of the product of example 3 except that the mass fraction of the aqueous lanthanum sulfate solution was 12%.
As shown in experimental examples 1-5, hydroxyapatite is not added into the rare earth complex preparation, the performance of the rare earth complex preparation is most obviously deteriorated in comparison with other factors of the rare earth complex preparation, then, the octaphenyl cage-shaped silsesquioxane is not added into the rare earth complex preparation, the water solution of hydroxyapatite and lanthanum sulfate is not added into the rare earth complex preparation, the mass fractions of the octaphenyl cage-shaped silsesquioxane is not added, the silane coupling agent KH560 and the water solution of lanthanum sulfate are not added into the rare earth complex preparation, the performance of the rare earth complex preparation is deteriorated, the compatibility of the performance of the product is most obvious, the solvent resistance stability of the product is most excellent, and the effect is not obvious compared with the effect of the invention by adopting other methods.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The production process of the ultrathin transposed conductor is characterized by comprising the following steps of:
step one: firstly, selecting a cathode copper plate, casting a copper wire blank by an upward drawing method, wherein the copper content reaches more than 99.99%, and drawing the copper wire blank into a bare copper flat wire by a five-die wire drawing machine;
step two: then, acetal paint is coated on the bare copper flat wire through a paint coating machine, and then primary drying treatment is carried out to form a bottom paint layer, wherein the thickness of the bottom paint layer is 0.08-0.10mm; then coating the crosslinked modified paint on the surface of the bottom paint layer through a paint coating machine, and performing secondary drying treatment to form a middle paint layer, wherein the thickness of the middle paint layer is 0.03-0.04mm;
step three: coating the middle layer paint layer in the second step with modified self-adhesive paint, and performing secondary drying treatment to form a self-adhesive modified paint layer with the thickness of 0.03-0.04mm, thereby forming an ultrathin enameled copper flat wire;
the preparation method of the modified self-adhesive paint comprises the following steps:
adding 18-20 parts of xylene solvent into 25-30 parts of solid epoxy resin, heating to 42-44 ℃, and stirring at 210-230r/min until the xylene solvent is fully dissolved into transparent liquid;
then adding 15-18 parts of liquid epoxy resin and 3-6 parts of coordination reinforcing modifier, continuously stirring uniformly at normal temperature, and finally adding 1-4 parts of diethyl alanine curing agent, continuously stirring fully to obtain modified self-adhesive paint;
step four: weaving 7 ultrathin enameled rectangular copper wires in the third step into a transposed conductor wire harness through a transposed conductor device, wrapping an insulating net outside the transposed conductor wire harness by utilizing a wrapping device to form an insulating net layer, wherein the thickness of the insulating net layer is 0.25-0.26mm, and the wrapping tension of the insulating net is controlled at 15N, so that the ultrathin transposed conductor can be manufactured;
the preparation method of the coordination reinforcing modifier comprises the following steps:
s11: firstly placing bentonite at 210-220 ℃ for heat treatment for 5-10min, then heating to 300-350 ℃ at the speed of 5 ℃/min, preserving heat for 20-30min, then cooling to 45-50 ℃ at the speed of 1-3 ℃/min, and preserving heat;
s12: placing the S11 heat-preserving product into 3-5 times of hydrochloric acid solution, uniformly stirring, then adding chitosan water solution accounting for 4-8% of the total amount of the S11 heat-preserving product and carboxymethyl cellulose accounting for 1-5% of the total amount of the S11 heat-preserving product, uniformly stirring, washing with water, and drying to obtain a bentonite modifier;
s13: and finally, sending the bentonite modifier into an ethanol solvent which is 3-5 times of the total amount of the bentonite modifier, adding 5-10% of glass fiber and 2-5% of triisostearoyl isopropyl titanate, uniformly stirring, then adding 1-5% of isopropyl tri (dioctyl pyrophosphoric acid acyloxy) titanate of the total amount of the bentonite modifier, fully stirring, and finally washing and drying to obtain the coordination reinforcing modifier.
2. The process for producing an ultrathin transposed conductor according to claim 1, wherein the conditions of primary drying, secondary drying and tertiary drying are respectively: the lower temperature of the oven is 180-220 ℃, the middle temperature is 250-350 ℃, the upper temperature is 350-450 ℃, and the drying linear speed is 10-15m/min.
3. The process for producing an ultrathin transposed conductor according to claim 1, wherein the preparation method of the crosslinked modified paint is as follows:
s01: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting for 20-25min at 76-82 ℃, then adding terephthalaldehyde, adjusting pH to 7.5, and stirring fully to obtain a paraformaldehyde matrix;
s02: adding silicon carbide whisker into rare earth blending liquid with the ratio of 3-5 times, uniformly stirring, washing with water, and drying to obtain a silicon carbide whisker complex modifier;
s03: the silicon carbide whisker complex modifier comprises the following components in percentage by weight: (9-11) adding the mixture into an ethanol solvent, then adding paraformaldehyde matrix accounting for 15-20% of the total amount of the silicon carbide whisker complex modifier and acetaminophen accounting for 1-5% of the total amount of the silicon carbide whisker complex modifier, and carrying out primary stirring treatment to obtain a modified silicon carbide whisker complex modifier;
s04: adding 2-5% of divinylbenzene, 1-3% of azodiisobutyronitrile and 5-10% of polyvinyl formal resin into the modified silicon carbide whisker compound agent, continuing secondary stirring treatment, and obtaining the crosslinked modified paint after stirring.
4. The process for producing an ultra-thin transposed conductor of claim 3 wherein the primary agitation is performed at a rotational speed of 450-500r/min for a period of 20-30min; the rotation speed of the secondary stirring treatment is 200-220r/min, and the stirring time is 45-55min.
5. The production process of the ultrathin transposed conductor according to claim 3, wherein the rare earth blending liquid comprises the following raw materials in parts by weight:
30-40 parts of deionized water, 3-5 parts of hydroxyapatite, 2-5 parts of lanthanum sulfate aqueous solution, 0.45-0.65 part of octaphenyl cage-like silsesquioxane and 0.15-0.25 part of silane coupling agent.
6. The process for producing an ultrathin transposed conductor according to claim 5, wherein the mass fraction of the lanthanum sulfate aqueous solution is 5-10%.
7. The process for producing an ultra-thin transposed conductor of claim 5 wherein the silane coupling agent is silane coupling agent KH560.
8. The process for producing an ultra-thin transposed conductor according to claim 1, wherein the mass fraction of the hydrochloric acid solution is 8-12%.
9. The production process of the ultrathin transposed conductor according to claim 1, wherein the mass fraction of the chitosan aqueous solution is 5-10%.
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| JP2016195090A (en) * | 2015-04-02 | 2016-11-17 | 日立金属株式会社 | Insulated wire, method for producing the insulated wire, and coil using the insulated wire |
| CN108376577A (en) * | 2018-03-15 | 2018-08-07 | 无锡统力电工股份有限公司 | PVF/B self-adhering transposed conductors and preparation method thereof |
| CN113393974A (en) * | 2021-06-04 | 2021-09-14 | 无锡统力电工有限公司 | Preparation method of high-thermal-conductivity self-adhesive enameled transposed conductor |
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| JP2016195090A (en) * | 2015-04-02 | 2016-11-17 | 日立金属株式会社 | Insulated wire, method for producing the insulated wire, and coil using the insulated wire |
| CN108376577A (en) * | 2018-03-15 | 2018-08-07 | 无锡统力电工股份有限公司 | PVF/B self-adhering transposed conductors and preparation method thereof |
| CN113393974A (en) * | 2021-06-04 | 2021-09-14 | 无锡统力电工有限公司 | Preparation method of high-thermal-conductivity self-adhesive enameled transposed conductor |
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