CN112934952A - Copper rod production process - Google Patents
Copper rod production process Download PDFInfo
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- CN112934952A CN112934952A CN202110006073.1A CN202110006073A CN112934952A CN 112934952 A CN112934952 A CN 112934952A CN 202110006073 A CN202110006073 A CN 202110006073A CN 112934952 A CN112934952 A CN 112934952A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/082—Inorganic acids or salts thereof containing nitrogen
- C10M2201/083—Inorganic acids or salts thereof containing nitrogen nitrites
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/124—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms containing hydroxy groups; Ethers thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/024—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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Abstract
The invention provides a copper rod production process, which comprises the following steps: s1, a copper melting process; s2, a rod casting process; s3, rolling procedure: cooling the cast rod, and then rolling the cast rod by a rolling machine spraying saponification liquid to generate a copper rod; s4, a cooling procedure; s5, a drying process; s6, a winding procedure is carried out; the saponification liquid is prepared from the following raw materials in parts by weight: 4-9 parts of poly-diglycine succinic acid, 2-6 parts of sodium gluconate, 5-7 parts of ethylene glycol, 0.5-2 parts of petroleum sodium sulfonate, 1-3 parts of triethanolamine, 2-7 parts of polyvinyl alcohol, 0.2-0.5 part of emulsifier, 0.5-1 part of sodium nitrite, 2-5 parts of sodium hydroxide, 1-2 parts of urea and 150 parts of 100-fold water. The antioxidant is added into the saponification liquid added in the rolling procedure, so that the saponification liquid has the effects of lubricating, cooling and forming an antioxidant film on the surface of the copper rod, and the antioxidant effect of the copper rod is not greatly influenced after the saponification liquid is washed by cooling water and subjected to dehumidification treatment in the subsequent cooling procedure.
Description
Technical Field
The invention relates to the technical field of copper rods, in particular to a copper rod production process.
Background
The oxygen-free copper rod is a copper rod with the oxygen content of less than 20ppm, and has important application in the field of electricians. At present, oxygen-free copper rods are mainly produced by a dip-coating method and an up-drawing method, and the main procedures are melting, casting, rolling, cooling, blow-drying and then coiling to produce bright oxygen-free copper rods for electricians. After the existing oxygen-free copper rod is placed for a long time, the surface of the existing oxygen-free copper rod is seriously oxidized, so that qualified electrical products cannot be produced subsequently.
Disclosure of Invention
The invention aims to provide a copper rod production process, wherein an antioxidant is simultaneously added into saponification liquid added in a rolling procedure, so that the saponification liquid has the effects of lubricating, cooling and forming an antioxidant film on the surface of a copper rod, and the antioxidant effect of the copper rod is not greatly influenced after the saponification liquid is washed by cooling water and subjected to dehumidification treatment in a subsequent cooling procedure.
The technical scheme of the invention is realized as follows:
the invention provides a copper rod production process, which comprises the following steps:
s1, a copper melting process: melting the copper plate into molten copper through a preheating furnace;
s2, a rod casting process: casting the molten copper on the surface of a core rod to generate a cast rod;
s3, rolling procedure: cooling the cast rod, and then rolling the cast rod by a rolling machine spraying saponification liquid to generate a copper rod;
s4, a cooling procedure: cooling the rolled copper rod by cooling liquid;
s5, a drying process: drying the copper rod through a dehumidifying device;
s6, a winding process: winding the copper rod on a take-up reel;
the saponification liquid is prepared from the following raw materials in parts by weight: 4-9 parts of poly diglycine succinic acid, 2-6 parts of sodium gluconate, 5-7 parts of ethylene glycol, 0.5-2 parts of petroleum sodium sulfonate, 1-3 parts of triethanolamine, 2-7 parts of polyvinyl alcohol, 0.2-0.5 part of emulsifier, 0.5-1 part of sodium nitrite, 2-5 parts of sodium hydroxide, 1-2 parts of urea and 150 parts of 100 parts of water;
the structural formula of the polydiglycine succinic acid is shown as the formula I:
wherein n is 100-;
the emulsifier is selected from one or more of hexadecyl sodium benzene sulfonate, octadecyl sodium benzene sulfonate, sodium dodecyl benzene sulfonate, sodium stearate, potassium stearate, sodium dodecyl sulfate and calcium dodecyl benzene sulfonate.
As a further improvement of the invention, the poly-diglycine succinic acid is prepared by the following method: dissolving succinic acid in an organic solvent, adding a condensing agent and an activating agent, adding glycine in batches, stirring and mixing uniformly, reacting at room temperature for 2-5h, performing suction filtration, and repeatedly washing with water to obtain polydiglycine succinic acid.
As a further improvement of the invention, the condensing agent is selected from one or a combination of more of dicyclohexylcarbodiimide, diisopropylcarbodiimide and 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide, the activating agent is selected from one or a combination of more of 4-N, N-dimethylpyridine, 1-hydroxybenzotriazole and tributylphosphine, and the organic solvent is selected from one or a combination of more of toluene, benzene, ethyl acetate, dichloromethane, tetrahydrofuran, ethanol, methanol, acetonitrile and DMF.
As a further improvement of the invention, the mass ratio of the succinic acid to the glycine to the condensing agent to the activating agent is 100: (140-170): (2-5): (1-4).
The invention further protects the copper rod obtained by the copper rod production process.
The invention further provides a saponification liquid, which is prepared from the following raw materials in parts by weight: 4-9 parts of poly-diglycine succinic acid, 2-6 parts of sodium gluconate, 5-7 parts of ethylene glycol, 0.5-2 parts of petroleum sodium sulfonate, 1-3 parts of triethanolamine, 2-7 parts of polyvinyl alcohol, 0.2-0.5 part of emulsifier, 0.5-1 part of sodium nitrite, 2-5 parts of sodium hydroxide, 1-2 parts of urea and 150 parts of 100-fold water.
As a further improvement of the invention, the emulsifier is selected from one or a combination of more of sodium hexadecylbenzene sulfonate, sodium octadecyl benzene sulfonate, sodium dodecyl benzene sulfonate, sodium stearate, potassium stearate, sodium dodecyl sulfate and calcium dodecyl benzene sulfonate.
As a further improvement of the invention, the health-care food is prepared from the following raw materials in parts by weight: 5-8 parts of poly diglycine succinic acid, 3-5 parts of sodium gluconate, 5.5-6.5 parts of ethylene glycol, 0.7-1.4 parts of petroleum sodium sulfonate, 1.5-2,5 parts of triethanolamine, 3-6 parts of polyvinyl alcohol, 0.25-0.45 part of emulsifier, 0.6-0.8 part of sodium nitrite, 3-4 parts of sodium hydroxide, 1.2-1.8 parts of urea and 130 parts of water 120 and other materials.
The invention further protects the preparation method of the saponification liquid, which comprises the steps of adding the components into water according to a certain proportion, stirring and mixing uniformly, homogenizing at 10000-.
The invention has the following beneficial effects:
1. the antioxidant is added into the saponification liquid added in the rolling procedure, so that the saponification liquid has the effects of lubricating, cooling and forming an antioxidant film on the surface of the copper rod, and the antioxidant effect of the copper rod is not greatly influenced after the saponification liquid is washed by cooling water and subjected to dehumidification treatment in the subsequent cooling procedure.
2. The added antioxidant comprises poly diglycine succinic acid, wherein the poly diglycine succinic acid is obtained by condensing glycine and succinic acid, and is subjected to double bond polymerization reaction to form a polymer long chain, wherein a plurality of pairs of carboxyl (one pair of carboxyl exists in each unit) are arranged in the polymer long chain, and can be chelated with Cu ions to form a larger chelate, so that the carboxyl can be attached to the surface of a copper rod to form a polymer film, the surface of the copper rod is isolated from oxygen, the copper rod is not easy to be oxidized, the good brightness of the copper rod is kept, and the performances of electric conduction, heat conduction, signal transmission and the like are better; in addition, lone pair electrons of O on the carboxyl pair and d empty orbitals of Cu act through coordination bonds, and contact between corrosive ions and the surface of the copper rod is reduced through competitive adsorption, so that a better corrosion inhibition effect is achieved; the poly-diglycine succinic acid also has good biodegradability and does not pollute the environment.
3. In addition, sodium gluconate is added into the antioxidant and has synergistic effect with poly (diglycine succinate) to improve Cu content2+Complexing ability of and to Cu2+The salt has good deactivation effect, and Cu is generated on the surface of copper due to the fact that glucose molecules contain reducing-CHO groups20 protective film, has good corrosion inhibition effect and good synergistic effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Preparation example 1 preparation of Polydiglycine succinic acid
The synthetic route is as follows:
the preparation method comprises the following steps: dissolving 100g of succinic acid in 200mL of dichloromethane, adding 2g of condensing agent diisopropylcarbodiimide and 1g of activator 1-hydroxybenzotriazole, adding 140g of glycine 10 times, 14g of glycine each time, stirring and mixing uniformly, reacting for 2 hours at room temperature, performing suction filtration, and repeatedly washing with water to obtain polydiglycine succinic acid with the yield of 90%.
After infrared characterization, 3410-3327cm in the spectrogram-1Is a stretching vibration absorption peak of an O-H bond in associated-COOH, 3210-3170cm-1For a stretching vibration peak of associated-NH, 1617cm-1And 1425cm-1Is the antisymmetric and symmetric telescopic vibration peak of-COOH C ═ O, 1307cm-11227-1070cm, bending vibration absorption peak of hydroxyl O-H bond-1852cm, which is the C-N stretching vibration peak-1Is an O-H out-of-plane deformation vibration absorption peak in-COOH of 795cm-1Is the NH out-of-plane deformation vibration peak. Indicating that the polydiglycine succinic acid is successfully synthesized.
Preparation example 2
The preparation method comprises the following steps: dissolving 100g of succinic acid in 200mL of DMF, adding 5g of dicyclohexylcarbodiimide condensing agent and 4g of 4-N, N-dimethylpyridine activating agent, adding 170g of glycine for 10 times, adding 17g of glycine each time, stirring and mixing uniformly, reacting at room temperature for 5 hours, performing suction filtration, and repeatedly washing with water to obtain polydiglycine succinic acid with the yield of 96%.
EXAMPLE 1 saponification liquid
The raw materials comprise the following components in parts by weight: 4 parts of polydiglycine succinic acid prepared in preparation example 1, 2 parts of sodium gluconate, 5 parts of ethylene glycol, 0.5 part of sodium petroleum sulfonate, 1 part of triethanolamine, 2 parts of polyvinyl alcohol, 0.2 part of emulsifier calcium dodecylbenzenesulfonate, 0.5 part of sodium nitrite, 2 parts of sodium hydroxide, 1 part of urea and 100 parts of water.
The preparation method comprises the following steps: the components are added into water according to a certain proportion, stirred and mixed evenly, and then homogenized for 2min at 10000r/min to obtain a finished product, and the finished product is diluted to 100 times when in use.
EXAMPLE 2 saponification liquid
The raw materials comprise the following components in parts by weight: 9 parts of polydiglycine succinic acid prepared in preparation example 2, 6 parts of sodium gluconate, 7 parts of ethylene glycol, 2 parts of sodium petroleum sulfonate, 1-3 parts of triethanolamine, 7 parts of polyvinyl alcohol, 0.5 part of emulsifier sodium dodecyl benzene sulfonate, 1 part of sodium nitrite, 5 parts of sodium hydroxide, 2 parts of urea and 150 parts of water.
The preparation method comprises the following steps: the components are added into water according to a certain proportion, stirred and mixed evenly, and then homogenized for 4min at 20000r/min to obtain a finished product, which is diluted to 10 times when in use.
EXAMPLE 3 saponification solution
The raw materials comprise the following components in parts by weight: 5 parts of polydiglycine succinic acid prepared in preparation example 2, 4 parts of sodium gluconate, 6 parts of ethylene glycol, 1.2 parts of petroleum sodium sulfonate, 2 parts of triethanolamine, 5 parts of polyvinyl alcohol, 0.35 part of emulsifier sodium octadecylbenzenesulfonate, 0.7 part of sodium nitrite, 3.5 parts of sodium hydroxide, 1.5 parts of urea and 125 parts of water.
The preparation method comprises the following steps: the components are added into water according to the proportion, stirred and mixed evenly, and then homogenized for 3min at the speed of 15000r/min to obtain a finished product, and the finished product is diluted to 50 times when in use.
Comparative example 1
In comparison with example 3, no polyglycine succinic acid from preparation 2 was added, and the other conditions were not changed.
The raw materials comprise the following components in parts by weight: 9 parts of sodium gluconate, 6 parts of ethylene glycol, 1.2 parts of petroleum sodium sulfonate, 2 parts of triethanolamine, 5 parts of polyvinyl alcohol, 0.35 part of emulsifier sodium octadecyl benzene sulfonate, 0.7 part of sodium nitrite, 3.5 parts of sodium hydroxide, 1.5 parts of urea and 125 parts of water.
Comparative example 2
Compared with example 3, sodium gluconate was not added, and other conditions were not changed.
The raw materials comprise the following components in parts by weight: 9 parts of polydiglycine succinic acid prepared in preparation example 2, 6 parts of ethylene glycol, 1.2 parts of petroleum sodium sulfonate, 2 parts of triethanolamine, 5 parts of polyvinyl alcohol, 0.35 part of emulsifier sodium octadecylbenzenesulfonate, 0.7 part of sodium nitrite, 3.5 parts of sodium hydroxide, 1.5 parts of urea and 125 parts of water.
Example 4 copper rod production Process
The method comprises the following steps:
s1, a copper melting process: melting the copper plate into molten copper through a preheating furnace;
s2, a rod casting process: casting the molten copper on the surface of a core rod to generate a cast rod;
s3, rolling procedure: cooling the cast rod, adding the saponification liquid prepared in the embodiment 3, and performing rolling treatment to generate a copper rod;
s4, a cooling procedure: cooling the rolled copper rod by cooling liquid;
s5, a drying process: drying the copper rod through a dehumidifying device;
s6, a winding process: and winding the copper rod on a take-up reel.
Comparative example 3
As the saponification solution, the saponification solution obtained in comparative example 1 was used, as compared with example 4, and the other conditions were not changed.
Comparative example 4
As the saponification solution, the saponification solution obtained in comparative example 2 was used, as compared with example 4, and the other conditions were not changed.
Comparative example 5
Compared with the example 4, the saponification liquid adopts the common saponification liquid, is purchased from Jinan Zhi Heng Long-distance chemical engineering technology Limited company, and other conditions are not changed.
Test example 1
The copper rods obtained in examples 1 to 3 and comparative examples 3 to 5 were subjected to wire drawing to obtain copper wires having a diameter of 2mm, and commercially available copper wires having a diameter of 2mm, and the results of the performance tests were shown in Table 1.
TABLE 1
As can be seen from the table above, the copper rod prepared by the embodiment of the invention has good mechanical properties and electrical properties after being prepared into a copper wire.
Test example 2
The copper rods obtained in examples 1 to 3 and comparative examples 3 to 5 were subjected to wire drawing to obtain copper wires having a diameter of 2mm and commercially available copper wires having a diameter of 2mm, and subjected to an oxidation resistance test, the copper wires were immersed in water for 1 hour, taken out, placed in the air, observed for oxidation, and subjected to a performance test after 15 days, the results of which are shown in Table 2.
TABLE 2
As can be seen from the table above, after the copper rod prepared by the embodiment of the invention is prepared into a copper wire, the retention rate of the copper wire on the resistivity can reach 96-99% after 15 days of oxidation.
Compared with the prior art, the method has the advantages that the antioxidant is simultaneously added into the saponification liquid added in the rolling procedure, so that the effects of lubricating, cooling and forming an antioxidant film on the surface of the copper rod are achieved, and the antioxidant effect of the copper rod is not greatly influenced after the copper rod is washed by cooling water and subjected to dehumidification treatment in the subsequent cooling procedure. The added antioxidant comprises poly diglycine succinic acid, wherein the poly diglycine succinic acid is obtained by condensing glycine and succinic acid, and is subjected to double bond polymerization reaction to form a polymer long chain, wherein a plurality of pairs of carboxyl (one pair of carboxyl exists in each unit) are arranged in the polymer long chain, and can be chelated with Cu ions to form a larger chelate, so that the carboxyl can be attached to the surface of a copper rod to form a polymer film, the surface of the copper rod is isolated from oxygen, the copper rod is not easy to be oxidized, the good brightness of the copper rod is kept, and the performances of electric conduction, heat conduction, signal transmission and the like are better; in addition, lone pair electrons of O on the carboxyl pair and d empty orbitals of Cu act through coordination bonds, and contact between corrosive ions and the surface of the copper rod is reduced through competitive adsorption, so that a better corrosion inhibition effect is achieved; the poly-diglycine succinic acid also has good biodegradability and does not pollute the environment. In addition, sodium gluconate is added into the antioxidant and has synergistic effect with poly (diglycine succinate) to improve Cu content2+Complexing ability of and to Cu2 +The salt has good deactivation effect, and Cu is generated on the surface of copper due to the fact that glucose molecules contain reducing-CHO groups20 protective film, has good corrosion inhibition effect and good synergistic effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A copper rod production process is characterized by comprising the following steps:
s1, a copper melting process: melting the copper plate into molten copper through a preheating furnace;
s2, a rod casting process: casting the molten copper on the surface of a core rod to generate a cast rod;
s3, rolling procedure: cooling the cast rod, and then rolling the cast rod by a rolling machine spraying saponification liquid to generate a copper rod;
s4, a cooling procedure: cooling the rolled copper rod by cooling liquid;
s5, a drying process: drying the copper rod through a dehumidifying device;
s6, a winding process: winding the copper rod on a take-up reel;
the saponification liquid is prepared from the following raw materials in parts by weight: 4-9 parts of poly diglycine succinic acid, 2-6 parts of sodium gluconate, 5-7 parts of ethylene glycol, 0.5-2 parts of petroleum sodium sulfonate, 1-3 parts of triethanolamine, 2-7 parts of polyvinyl alcohol, 0.2-0.5 part of emulsifier, 0.5-1 part of sodium nitrite, 2-5 parts of sodium hydroxide, 1-2 parts of urea and 150 parts of 100 parts of water;
the structural formula of the polydiglycine succinic acid is shown as the formula I:
wherein n is 100-;
the emulsifier is selected from one or more of hexadecyl sodium benzene sulfonate, octadecyl sodium benzene sulfonate, sodium dodecyl benzene sulfonate, sodium stearate, potassium stearate, sodium dodecyl sulfate and calcium dodecyl benzene sulfonate.
2. The copper rod production process according to claim 1, wherein the polydiglycine succinic acid is specifically prepared by the following method: dissolving succinic acid in an organic solvent, adding a condensing agent and an activating agent, adding glycine in batches, stirring and mixing uniformly, reacting at room temperature for 2-5h, performing suction filtration, and repeatedly washing with water to obtain polydiglycine succinic acid.
3. The process for producing the copper rod as claimed in claim 2, wherein the condensing agent is one or more selected from dicyclohexylcarbodiimide, diisopropylcarbodiimide and 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide, the activating agent is one or more selected from 4-N, N-dimethylpyridine, 1-hydroxybenzotriazole and tributylphosphine, and the organic solvent is one or more selected from toluene, benzene, ethyl acetate, dichloromethane, tetrahydrofuran, ethanol, methanol, acetonitrile and DMF.
4. The process for producing a copper rod as claimed in claim 2, wherein the mass ratio of the succinic acid, the glycine, the condensing agent and the activating agent is 100: (140-170): (2-5): (1-4).
5. A copper rod produced by the process for producing a copper rod according to any one of claims 1 to 4.
6. The saponification solution of claim 1, which is prepared from the following raw materials in parts by weight: 4-9 parts of poly-diglycine succinic acid, 2-6 parts of sodium gluconate, 5-7 parts of ethylene glycol, 0.5-2 parts of petroleum sodium sulfonate, 1-3 parts of triethanolamine, 2-7 parts of polyvinyl alcohol, 0.2-0.5 part of emulsifier, 0.5-1 part of sodium nitrite, 2-5 parts of sodium hydroxide, 1-2 parts of urea and 150 parts of 100-fold water.
7. The saponified solution as claimed in claim 6, wherein said emulsifier is selected from one or more of sodium hexadecylbenzene sulfonate, sodium octadecyl benzene sulfonate, sodium dodecylbenzene sulfonate, sodium stearate, potassium stearate, sodium dodecylsulfate, and calcium dodecylbenzene sulfonate.
8. The saponification liquid of claim 6, which is prepared from the following raw materials in parts by weight: 5-8 parts of poly diglycine succinic acid, 3-5 parts of sodium gluconate, 5.5-6.5 parts of ethylene glycol, 0.7-1.4 parts of petroleum sodium sulfonate, 1.5-2,5 parts of triethanolamine, 3-6 parts of polyvinyl alcohol, 0.25-0.45 part of emulsifier, 0.6-0.8 part of sodium nitrite, 3-4 parts of sodium hydroxide, 1.2-1.8 parts of urea and 130 parts of water 120 and other materials.
9. A method for preparing the saponification liquid as claimed in any one of claims 6-8, wherein the saponification liquid is prepared by adding the components into water in a certain proportion, stirring and mixing uniformly, homogenizing at 10000-.
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Application publication date: 20210611 |