Copper plate strip water-based rolling liquid and preparation method thereof

Abstract

The invention relates to a copper plate strip water-based rolling liquid and a preparation method thereof. The water-based rolling fluid comprises the following components in percentage by mass: 5%-10% of a water-soluble polymer, 5%-15% of a water-soluble extreme pressure anti-wear agent, 0.1%-8% of a surface modifier and a dispersant, 0.01%-0.1% of a defoaming agent, 1%-10% of a pH value regulator, 5%-15% of an antirust agent, 0.1%-2% of a bactericide and the balance of deionized water. The copper plate strip water-based rolling fluid solves the problems that in the prior art, rolling oil is poor in cooling performance, and rolling emulsion is poor in stability and cleanliness. And no mineral oil is contained, so that deterioration and rancidity are not easily caused, and bacterial reproduction is not easily caused.

Description

Technical Field

[0001] The invention relates to a water-based copper strip rolling fluid and a preparation method thereof, which is used for lubrication and cooling during the copper strip rolling process and belongs to the technical field of lubricants. Background Art

[0002] Rolling is a processing method that uses rollers to roll metal billets such as steel, copper, and aluminum into plates of various specifications. During the rolling process, the friction between the rollers and the metal is large, and a large amount of deformation heat and friction heat will be generated. If there is no necessary lubrication and cooling, the surface of the rolled piece will be seriously damaged, the plate and strip products will be unqualified, and even cracks will be caused to the rollers, shortening the life of the rollers. Therefore, a large amount of rolling lubricants are needed to lubricate and cool the friction pairs, thereby improving the quality of rolled products and extending the service life of the rollers. Copper strips are a widely used metal strip material. Due to the particularity of their materials, the selection of rolling lubricants in the copper strip rolling industry is extremely cautious. Emulsions are generally used as lubricants in the rolling process. Traditional emulsions contain a large amount of sulfur-based extreme pressure anti-wear agents and aromatic oil additives. These compounds are all toxic, causing great harm to the physical and mental health of workers during the rolling process, and will cause great pollution to the water environment when the waste liquid is discharged.

[0003] Nano-PTFE is a polymer of tetrafluoroethylene, with a molecular weight ranging from 140,000 to 500,000. It is a streamlined polymer compound with carbon atoms as the main body and fluorine atoms around the main body. It is an excellent solid lubricant. The streamlined structure and extremely low molecular cohesion of PTFE make it easy for molecules to slide relative to each other, thus showing an extremely low friction coefficient. It has a good application prospect in the preparation process of metal rolling lubricants. Summary of the invention

[0004] One of the technical problems to be solved by the present invention is that the existing technology has the problem that the pure oil type rolling fluid has poor cooling performance, the emulsified type rolling fluid has poor emulsification stability and poor cleanliness, and provides a new water-soluble rolling fluid composition. The water-soluble rolling fluid composition not only has excellent extreme pressure lubricity and rust resistance, but also has excellent cooling performance, stability and cleanliness, is easy to use, simple to maintain, and can fully meet the use requirements of modern high-speed rolling mills.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: A water-based copper strip rolling fluid, the components of which are as follows by mass percentage: 5% to 10% of a water-soluble polymer, 5% to 15% of a water-soluble extreme pressure anti-wear agent, 0.1% to 8% of a surface modifier and a dispersant, 0.01% to 0.1% of a defoaming agent, 1% to 10% of a pH value regulator, 5% to 15% of a rust inhibitor, 0.1% to 2% of a bactericide, and the balance is deionized water.

[0006] The water-soluble polymer is an EO-PO-EO block copolymer and / or a PO-EO-PO block copolymer.

[0007] The water-soluble extreme pressure anti-wear agent is selected from at least one of aqueous borates and polyvinyl pyrrolidone.

[0008] The surface modifier and dispersant are 0.1% to 3.0% of nano polytetrafluoroethylene, 0.1% to 2.0% of sodium polyacrylate, and 0.1% to 3.0% of sodium hexametaphosphate.

[0009] The defoaming agent is selected from at least one of methyl silicone oil, polydimethylsiloxane and amino silicone oil.

[0010] The pH value adjuster is at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium hydrogen phosphate, dipotassium hydrogen phosphate, disodium hydrogen phosphate, monoethanolamine, triethanolamine, and ethylenediamine.

[0011] The rust inhibitor is prepared by compounding benzotriazole, sodium dodecylbenzene sulfonate, triethanolamine, sodium molybdate and trisodium phosphate.

[0012] The bactericide is selected from at least one of morpholine derivatives, 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine, 3-iodo-2-propynylbutylcarbamate, 1,2-benzisothiazol-3-one, and n-butyl-1,2-benzisothiazolin-3-one.

[0013] A method for preparing a water-based copper strip rolling fluid comprises the following steps: A) adding deionized water into a reaction kettle, and adding nano-PTFE, sodium polyacrylate and sodium hexametaphosphate during stirring; heating the solution to 60-80° C. to achieve surface modification and dispersion of the nano-PTFE particles; B) The solution containing the modified tetrafluoroethylene particles is heated to 60°C and kept warm, and stirred continuously for 20 minutes; then a rust inhibitor, a water-soluble polymer, a water-soluble extreme pressure anti-wear agent, a defoaming agent, a pH regulator, and a bactericide are added, heated to 70-80°C, stirred for 30 minutes, and then cooled to room temperature to obtain a finished rolling liquid.

[0014] Specific implementation cases.

[0015] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] A water-based copper strip rolling fluid, the components of which are as follows by mass percentage: 10% water-soluble polyether, 10% water-based borate, 5% polyvinyl pyrrolidone, 1% nano polytetrafluoroethylene, 0.5% sodium polyacrylate, 0.5% sodium hexametaphosphate, 0.01% polydimethylsiloxane, 5% pH triethanolamine, 5% rust inhibitor, the rust inhibitor is a compound of benzotriazole, sodium dodecylbenzene sulfonate, triethanolamine, sodium molybdate, and trisodium phosphate. 0.1% 1,2-benzisothiazol-3-one, the balance is deionized water.

[0017] A method for preparing a water-based copper strip rolling fluid comprises the following steps: A) adding deionized water into a reaction kettle, and adding nano-PTFE, sodium polyacrylate and sodium hexametaphosphate during stirring; heating the solution to 60-80° C. to achieve surface modification and dispersion of the nano-PTFE particles; B) The solution containing the modified tetrafluoroethylene particles is heated to 60°C and kept warm, and stirred continuously for 20 minutes; then a rust inhibitor, a water-soluble polymer, a water-soluble extreme pressure anti-wear agent, a defoaming agent, a pH regulator, and a bactericide are added, heated to 70-80°C, stirred for 30 minutes, and then cooled to room temperature to obtain a finished rolling liquid.

[0018] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that fall within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0019] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water-based rolling fluid for copper strip, characterized in that: Its components are as follows by mass percentage: 5%~10% water-soluble polymer, 5%~15% water-soluble extreme pressure anti-wear agent, 0.1%~8% surface modifier and dispersant, 0.01%~0.1% defoaming agent, 1%~10% pH value regulator, 5%~15% rust inhibitor, 0.1%~2% bactericide, and the balance is deionized water.

2. The water-based copper strip rolling fluid according to claim 1, characterized in that: The water-soluble polymer is an EO-PO-EO block copolymer and / or a PO-EO-PO block copolymer.

3. The water-based copper strip rolling fluid according to claim 1, characterized in that: The water-soluble extreme pressure anti-wear agent is selected from at least one of aqueous borates and polyvinyl pyrrolidone.

4. The water-based copper strip rolling fluid according to claim 1, characterized in that: The surface modifier and dispersant are 0.1% to 3.0% of nano polytetrafluoroethylene, 0.1% to 2.0% of sodium polyacrylate, and 0.1% to 3.0% of sodium hexametaphosphate.

5. The water-based copper strip rolling fluid according to claim 1, characterized in that: The defoaming agent is selected from at least one of methyl silicone oil, polydimethylsiloxane and amino silicone oil.

6. The water-based copper strip rolling fluid according to claim 1, characterized in that: The pH value adjuster is at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium hydrogen phosphate, dipotassium hydrogen phosphate, disodium hydrogen phosphate, monoethanolamine, triethanolamine, and ethylenediamine.

7. The water-based copper strip rolling fluid according to claim 1, characterized in that: The rust inhibitor is prepared by compounding benzotriazole, sodium dodecylbenzene sulfonate, triethanolamine, sodium molybdate and trisodium phosphate.

8. The water-based copper strip rolling fluid according to claim 1, characterized in that: The bactericide is selected from at least one of morpholine derivatives, 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine, 3-iodo-2-propynylbutylcarbamate, 1,2-benzisothiazol-3-one, and n-butyl-1,2-benzisothiazolin-3-one.

9. A method for preparing a water-based rolling fluid for copper strip, characterized in that: The steps include: A) adding deionized water into a reaction kettle, and adding nano-PTFE, sodium polyacrylate and sodium hexametaphosphate during stirring; heating the solution to 60-80° C. to achieve surface modification and dispersion of the nano-PTFE particles; B) The solution containing the modified tetrafluoroethylene particles is heated to 60°C and kept warm, and stirred continuously for 20 minutes; then a rust inhibitor, a water-soluble polymer, a water-soluble extreme pressure anti-wear agent, a defoaming agent, a pH regulator, and a bactericide are added, heated to 70-80°C, stirred for 30 minutes, and then cooled to room temperature to obtain a finished rolling liquid.