High performance aluminum foil cleaning agent and preparation method thereof

Abstract

The application discloses a high-performance aluminum foil cleaning agent and belongs to the technical field of metal cleaning, and comprises the following components in corresponding percentages by weight: organic acid 5-15%, non-ionic surfactant 1-5%, amphoteric ion surfactant 1-3%, corrosion inhibitor 0.5-2%, complexing agent 1-4%, assistant 3-8%, polycarboxylic acid low-molecular polymer 1-3%, nano titanium dioxide 0.4-0.6%, and deionized water in the rest. After the aluminum foil is processed by the cleaning agent, the original foil surface reaches a value of 28 to more than 70, and the common problems of the ordinary aluminum foil, such as insufficient adhesion to the aluminum foil, poor printing, coating shrinkage, poor coating surface effect and the like, are solved, the aluminum processing industry is helped to develop, and the high-performance aluminum foil cleaning agent has great market competitiveness.

Description

Technical Field

[0001] This invention belongs to the field of metal cleaning technology, specifically relating to a high-performance aluminum foil cleaning agent and its preparation method. Background Technology

[0002] During production, processing, and transportation, aluminum foil can become contaminated with rolling oil, lubricating oil, human sweat, fingerprints, dust, and form a natural oxide film. These contaminants can severely affect the coating, etching, or soldering performance of aluminum foil in subsequent processes. Traditional aluminum foil cleaning agents often employ the following methods: Strong alkaline and strong acid systems: such as sodium hydroxide, sulfuric acid, nitric acid, etc. These cleaning agents have strong cleaning power, but they severely corrode the aluminum foil substrate, easily leading to problems such as poor uniformity, pitting, and loss of gloss on the aluminum foil surface. Moreover, the acid mist is harmful to equipment and operators.

[0003] Phosphorus- and chromium-containing systems: Phosphates can play a good role in cleaning, and chromates are highly effective corrosion inhibitors. However, these substances can cause eutrophication of water bodies, and chromium ions are highly toxic and their use has been strictly restricted by environmental regulations.

[0004] Therefore, developing an aluminum foil cleaning agent that achieves the best balance between cleaning efficiency, substrate protection, and environmental compatibility has become a pressing technical problem to be solved in this field. Summary of the Invention

[0005] To address the above problems, this invention provides a high-performance aluminum foil cleaning agent, comprising the following components by weight percentage: Organic acid 5-15%, nonionic surfactant 1-5%, amphoteric surfactant 1-3%, corrosion inhibitor 0.5-2%, complexing agent 1-4%, detergent builder 3-8%, polycarboxylic acid low molecular weight polymer 1-3%, nano titanium dioxide 0.4-0.6%, with the balance being deionized water.

[0006] Furthermore, the organic acid is at least one of citric acid, gluconic acid, and tartaric acid.

[0007] Furthermore, the nonionic surfactant is at least one of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether.

[0008] Furthermore, the zwitterionic surfactant is at least one of dodecyl dimethyl betaine and cocamidopropyl hydroxysulfonate.

[0009] Furthermore, the corrosion inhibitor is at least one of benzotriazole, methylbenzotriazole, and sodium molybdate.

[0010] Furthermore, the complexing agent is at least one of disodium ethylenediaminetetraacetate and sodium citrate.

[0011] Furthermore, the detergent additive is at least one of sodium silicate and sodium carbonate.

[0012] Furthermore, the polycarboxylic acid low molecular weight polymer is at least one of polyacrylic acid, hydrolyzed polymaleic anhydride, and polymethacrylic acid.

[0013] Furthermore, the particle size of the nano-titanium dioxide is 60-100 nm.

[0014] A method for preparing a high-performance aluminum foil cleaning agent includes the following steps: First, mix the organic acid, nonionic surfactant, amphoteric surfactant, detergent builder, and half of the deionized water evenly. Then, add the corrosion inhibitor, complexing agent, polycarboxylic acid low molecular weight polymer, and nano titanium dioxide. At the same time, add the remaining deionized water and ultrasonically stir until evenly mixed.

[0015] The present invention has the following advantages over the prior art: This invention uses a mild organic acid as its core, combined with a highly efficient corrosion inhibitor, resulting in a significantly lower corrosion rate on aluminum foil compared to traditional acid pickling processes. After cleaning, the aluminum foil surface is smooth and free from over-corrosion. The scientifically formulated blend of nonionic and amphoteric surfactants allows for rapid penetration and emulsification of greases, while the organic acid dissolves the oxide layer, ensuring a thorough cleaning in a single application. The added polycarboxylic acid low-molecular-weight polymer and nano-titanium dioxide bind and adsorb impurities, further enhancing the cleaning effect in conjunction with the other components of the cleaning system. The overall composition of this invention is free of strong acids, phosphates, chromates, nitrites, and other harmful substances, making it readily biodegradable. It requires minimal wastewater treatment pressure, is environmentally friendly and safe, and produces no irritating acid mist during application, improving the working environment, reducing equipment requirements, and being employee-friendly. After processing with this cleaning agent, the dyne value of the aluminum foil increases from 28 to over 70, solving common problems with ordinary aluminum foil such as insufficient adhesion, incomplete printing, coating pinholes, and poor coating surface effects. This contributes to the development of the aluminum processing industry and gives it a strong market competitiveness. Attached Figure Description

[0016] Figure 1 This is a test diagram corresponding to Embodiment 1 of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below in conjunction with the embodiments of this invention. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of the embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0018] In the embodiments, it should be noted that any processes not specifically described below are those that can be implemented or understood by those skilled in the art by referring to existing technology. Reagents or instruments whose manufacturers are not specified are considered to be conventional products that can be purchased commercially.

[0019] Example 1 A high-performance aluminum foil cleaning agent comprises the following components in the corresponding weight percentages: The ingredients are: 8% citric acid, 2% gluconic acid, 3% fatty alcohol polyoxyethylene ether, 2% dodecyl dimethyl betaine, 0.8% benzotriazole, 2% disodium ethylenediaminetetraacetate, 5% sodium silicate, 2% polyacrylic acid, 0.5% nano titanium dioxide, and the balance is deionized water.

[0020] The particle size of nano-titanium dioxide is 60-100nm.

[0021] Example 2 A high-performance aluminum foil cleaning agent comprises the following components in the corresponding weight percentages: Citric acid 5%, gluconic acid 5%, fatty alcohol polyoxyethylene ether 1%, dodecyl dimethyl betaine 1%, benzotriazole 0.5%, disodium ethylenediaminetetraacetate 1%, sodium silicate 3%, polyacrylic acid 1%, nano titanium dioxide 0.4%, with the balance being deionized water.

[0022] The particle size of nano-titanium dioxide is 60-100nm.

[0023] Example 3 A high-performance aluminum foil cleaning agent comprises the following components in the corresponding weight percentages: Citric acid 5%, gluconic acid 10%, fatty alcohol polyoxyethylene ether 5%, dodecyl dimethyl betaine 3%, benzotriazole 2%, disodium ethylenediaminetetraacetate 4%, sodium silicate 8%, polyacrylic acid 3%, nano titanium dioxide 0.6%, with the balance being deionized water.

[0024] The particle size of nano-titanium dioxide is 60-100nm.

[0025] Example 4 A high-performance aluminum foil cleaning agent comprises the following components in the corresponding weight percentages: The ingredients are: 10% citric acid, 3% alkylphenol polyoxyethylene ether, 2% cocamidopropyl hydroxysulfonate betaine, 1.5% methylbenzotriazole, 2% sodium citrate, 5% sodium carbonate, 2% hydrolyzed polymaleic anhydride, 0.5% nano titanium dioxide, and the balance being deionized water.

[0026] The particle size of nano-titanium dioxide is 60-100nm.

[0027] Example 5 A high-performance aluminum foil cleaning agent comprises the following components in the corresponding weight percentages: The ingredients are: 10% gluconic acid, 3% fatty alcohol polyoxyethylene ether, 2% dodecyl dimethyl betaine, 1.5% sodium molybdate, 2% sodium citrate, 5% sodium carbonate, 2% polymethacrylic acid, 0.5% nano titanium dioxide, and the balance is deionized water.

[0028] The particle size of nano-titanium dioxide is 60-100nm.

[0029] Example 6 A high-performance aluminum foil cleaning agent comprises the following components in the corresponding weight percentages: Tartaric acid 10%, fatty alcohol polyoxyethylene ether 3%, cocamidopropyl hydroxysulfonate betaine 2%, sodium molybdate 1.5%, sodium citrate 2%, sodium silicate 5%, polymethacrylic acid 2%, nano titanium dioxide 0.5%, and the balance is deionized water.

[0030] The particle size of nano-titanium dioxide is 60-100nm.

[0031] Comparative Example 1 Commercially available sodium hydroxide aluminum foil cleaning agent.

[0032] To compare the effects of the present invention, actual cleaning tests were conducted on the cleaning agents prepared in Examples 1-6 and Comparative Example 1. Specifically, the cleaning agents were first prepared into a 5% aqueous solution, and then... Aluminum foil (Shenzhen Bairuifa Technology Co., Ltd., model 1100) was cut into 7 circular aluminum foil sheets with a diameter of 10cm. 2g of aluminum foil rolling oil was applied to one side of each aluminum foil sheet using a brush. The aluminum foil sheets were then immersed in the above-mentioned cleaning agent, maintaining the cleaning agent temperature at 40℃ for 10 minutes. After that, the aluminum foil was removed, and the surface wetting tension and surface condition of the aluminum foil were tested and observed. The corresponding results are shown in Table 1 below. Table 1 As can be seen from Table 1 above, the cleaning agent prepared by the method of the present invention can significantly improve the cleaning effect without damaging the aluminum foil. At the same time, its ingredients are environmentally friendly, safe to use, and more competitive in the market.

[0033] To more intuitively demonstrate the effects of the present invention, the aluminum foil treated in Example 1 was subjected to... Using an American Essadine pen (70), stroke the pen from left to right and observe whether the dyne solution on the surface shrinks; results are attached. Figure 1 As shown, Figure 1The right side of the image shows the scribing state of the aluminum foil before cleaning, while the left side shows the scribing state of the aluminum foil after cleaning in Example 1. It can be seen that the surface of the dyne solution is consistent and continuous, with no shrinkage or jagged edges, indicating that its surface area is greater than 70 dynes.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A high-performance aluminum foil cleaning agent, characterized in that, Includes the following components by weight percentage: Organic acid 5-15%, nonionic surfactant 1-5%, amphoteric surfactant 1-3%, corrosion inhibitor 0.5-2%, complexing agent 1-4%, detergent builder 3-8%, polycarboxylic acid low molecular weight polymer 1-3%, nano titanium dioxide 0.4-0.6%, with the balance being deionized water.

2. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The organic acid is at least one of citric acid, gluconic acid, and tartaric acid.

3. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The nonionic surfactant is at least one of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether.

4. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The zwitterionic surfactant is at least one of dodecyl dimethyl betaine and cocamidopropyl hydroxysulfonate.

5. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The corrosion inhibitor is at least one of benzotriazole, methylbenzotriazole, and sodium molybdate.

6. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The complexing agent is at least one of disodium ethylenediaminetetraacetate and sodium citrate.

7. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The detergent builder is at least one of sodium silicate and sodium carbonate.

8. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The polycarboxylic acid low molecular weight polymer is at least one of polyacrylic acid, hydrolyzed polymaleic anhydride, and polymethacrylic acid.

9. The high-performance aluminum foil cleaning agent according to claim 1, characterized in that, The particle size of the nano-titanium dioxide is 60-100 nm.

10. A method for preparing a high-performance aluminum foil cleaning agent as described in any one of claims 1-9, characterized in that, Includes the following steps: First, mix the organic acid, nonionic surfactant, amphoteric surfactant, detergent builder, and half of the deionized water evenly. Then, add the corrosion inhibitor, complexing agent, polycarboxylic acid low molecular weight polymer, and nano titanium dioxide. At the same time, add the remaining deionized water and stir ultrasonically until evenly mixed.

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