Four-in-one cleaning agent for oil removal, wax removal, oxidation removal and rust prevention of copper heat pipe

Abstract

The invention discloses a four-in-one cleaning agent for removing oil, wax, oxidation and rust for a copper heat pipe. The four-in-one cleaning agent comprises the following components in percentage by weight: 20-33% of a surfactant, 5-10% of a natural solvent, 10-15% of a chelating agent, 3-8% of organic acid, 2-5% of a film-forming agent, 0.5-1.5% of a synergist and the balance of deionized water. The dodecyl dimethyl amine oxide is an ampholytic surfactant, the viscosity of a product can be remarkably improved, the liquid cleaning agent is easier to store and transport and suitable for high-viscosity oil stain and heavy oil stain cleaning scenes, the iso-tridecanol polyoxyethylene ether is a non-ionic surfactant, the core functions of efficient cleaning, permeation, emulsification and decontamination are achieved, and the cleaning agent has the advantages of being environmentally friendly and free of pollution. The metal cleaning agent can deeply remove stubborn stains such as oil stains and wax dirt on the metal surface, terpinen-4-ol serving as a natural solvent can quickly dissolve grease, wax and cutting fluid residues and improve the cleaning efficiency, the terpinen-4-ol is compounded with inositol hexaphosphate to permeate an oxide layer to accelerate stripping of verdigris, formation of an anti-rust protective film is facilitated, and the metal cleaning agent has both solubility and environmental friendliness.

Description

Technical Field

[0001] This invention relates to the field of cleaning agent technology, specifically to a four-in-one cleaning agent for copper heat pipes that removes oil, wax, oxidation, and rust. Background Technology

[0002] The main function of copper heat pipes is to efficiently transfer heat through conduction and phase change, and they are widely used in electronic equipment heat dissipation, industrial heating, and other fields. Copper heat pipes achieve heat transfer through internal liquid evaporation and condensation, and have extremely high thermal conductivity. They can quickly conduct heat from high-temperature components to heat dissipation devices, and then the heat is dissipated through the heat dissipation devices. Combined with precision machining processes, thermal conductivity can be maximized. They can be designed into flat or curved shapes to meet the special spatial layout requirements of heat exchange equipment, and have properties such as corrosion resistance and high temperature resistance.

[0003] The aforementioned and existing methods for cleaning copper heat pipes face several challenges. During the production process and prolonged use, copper heat pipes accumulate wax and oil deposits. The various components that accumulate on the outer wall accelerate oxidation, affecting not only the pipe's performance but also posing a risk of corrosion and leakage. Regular maintenance, including degreasing, dewaxing, and deoxidizing, is necessary, along with rust prevention treatment to extend the lifespan of the copper heat pipes. Therefore, there is an urgent need to design a four-in-one cleaning agent for copper heat pipes that removes oil, wax, oxidation, and provides rust prevention, effectively addressing these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a four-in-one cleaning agent for copper heat pipes that removes oil, wax, oxidation, and rust, in order to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A four-in-one cleaning agent for removing oil, wax, oxidation, and rust from copper heat pipes, characterized in that it comprises the following components by weight percentage: 20-33% surfactant, 5-10% natural solvent, 10-15% chelating agent, 3-8% organic acid, 2-5% film-forming agent, 0.5-1.5% synergist, and the balance being deionized water;

[0007] The surfactants include dodecyl dimethylamine oxide and isotridecyl alcohol polyoxyethylene ether;

[0008] The natural solvent is terpinene-4-ol;

[0009] The chelating agent is inositol hexaphosphate;

[0010] The organic acid is citric acid;

[0011] The film-forming agent is chitosan quaternary ammonium salt;

[0012] The synergist includes nano-silica and benzotriazole.

[0013] Furthermore, the weight percentages of the dodecyl dimethylamine oxide and the isomeric tridecyl alcohol polyoxyethylene ether are 12-18% and 8-15%, respectively, and the weight percentages of the nano-silica and the benzotriazole are 0.2-0.6% and 0.3-0.9%, respectively.

[0014] Furthermore, the cleaning agent is suitable for chemical cleaning of copper heat pipes and stainless steel components, and can be used in undiluted or diluted 1:1 solutions, with a temperature range of 30–50°C. It is suitable for immersion cleaning and ultrasonic cleaning.

[0015] Furthermore, the degreasing rate reaches 98.5%, the copper oxide green is completely dissolved, the anti-rust film takes effect directly, and the corrosion rate is <0.01mg / cm³. 2 92.3% biodegradability.

[0016] A method for preparing a four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes, used to prepare the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes as described in any one of the above-mentioned methods, characterized by comprising the following steps:

[0017] Step 1: Prepare a stainless steel reactor and a pH meter. Add the deionized water to the stainless steel reactor, preheat it to 40°C and stir it at a speed of 200 rpm / min.

[0018] Step 2: Add the dodecyl dimethylamine oxide and the isomeric tridecyl alcohol polyoxyethylene ether sequentially into the stainless steel reactor, heat to 50±2℃, and stir for 30 minutes until completely transparent;

[0019] Step 3: Slowly add the terpinene-4-ol to the stainless steel reactor, maintain the temperature at 50°C and stir for 20 minutes. Then, slowly add the diluted inositol hexaphosphate to the stainless steel reactor and continue stirring at 50°C until the solution is a uniform pale yellow.

[0020] Step 4: Dilute the citric acid and slowly add it into the stainless steel reactor. Stir at a controlled temperature of 55°C. During this process, use the pH meter to monitor the mixture in the stainless steel reactor in real time. Stir until the pH meets the requirements.

[0021] Step 5: Dissolve the chitosan quaternary ammonium salt in warm water, then filter and add it to the stainless steel reactor. Cool to 40°C and stir until no particles remain.

[0022] Step 6: After grinding and dispersing the nano-silica, add it into the stainless steel reactor, then add the solvent-diluted benzotriazole into the stainless steel reactor, and stir for 15 minutes at a controlled temperature of 40°C.

[0023] Step 7: Add the remaining deionized water according to the specific gravity, and stir at 40℃ for 20 minutes;

[0024] Step 8: Adjust the stirring speed to 1200 rpm / min to remove air bubbles, then filter the finished product through a filter bag and store it in a storage tank.

[0025] Furthermore, in step 3, the dilution ratio is 2.5:1 between the inositol hexaphosphate and the deionized water, and the inositol hexaphosphate is slowly and evenly dripped into the stainless steel reactor using a dropper.

[0026] Furthermore, in step 4, the dilution ratio is 1:1 between the citric acid and the deionized water. After the citric acid solution is added to the stainless steel reactor and stirred, the pH meter needs to monitor the mixture to reach a pH of 4.5 to 5.0.

[0027] Furthermore, in step 5, the chitosan quaternary ammonium salt is dissolved in 60°C warm water at a ratio of 3:1, and after dissolution, it is filtered through a 200-mesh filter before being added to the stainless steel reactor.

[0028] Furthermore, in step 6, the nano-silica is ground with a grinder until no agglomeration occurs, and then added to the stainless steel reactor after being dispersed. The ratio of benzotriazole to deionized water is 1:9, and the dissolved solution is added to the stainless steel reactor.

[0029] Furthermore, in step 8, a 500μm filter bag is used to filter the finished product after volume adjustment. After filtration, the product is stored in a sealed storage tank in a ventilated place at room temperature.

[0030] In the above technical solution, the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes provided by the present invention has the following beneficial effects:

[0031] (1) Dodecyl dimethylamine oxide is an amphoteric surfactant that can significantly improve the viscosity of the product, making the liquid cleaning agent easier to store and transport. It is suitable for cleaning high-viscosity oil stains and heavy oil stains. Isomeric tridecyl alcohol polyoxyethylene ether is a nonionic surfactant with the core functions of efficient cleaning, penetration, emulsification and decontamination. It can penetrate deep into the metal surface to remove stubborn stains such as oil stains and wax. Terpinene-4-ol is a natural solvent that can quickly dissolve grease, wax and cutting fluid residues, improve cleaning efficiency. When combined with inositol hexaphosphate, it can penetrate the oxide layer to accelerate the peeling of copper patina, which is conducive to the formation of a rust-preventive protective film. It has both solubility and environmental protection.

[0032] (2) The anti-rust film formed by chitosan quaternary ammonium salt can inhibit the growth of microorganisms, reduce the damage of corrosive substances to metals, reduce the adhesion of moisture and pollutants, extend the anti-rust cycle of metal parts, and form a chelating effect with pollutants on the metal surface to effectively remove impurities such as oil and metal ions, while inhibiting the corrosion of metals by cleaning agents. As a biodegradable material, chitosan quaternary ammonium salt is easy to decompose after cleaning, reducing residual pollution and meeting environmental protection requirements.

[0033] (3) Using synergists of nano silica and benzotriazole, nano silica particles have stronger adsorption capacity, which can quickly adsorb and remove impurities such as grease and pollutants. Its three-dimensional chain structure forms a network structure in the liquid, which can more tightly wrap the stains and improve cleaning efficiency. Nano silica itself is non-toxic and has good biocompatibility. It will not produce harmful substances during the cleaning process, and can achieve efficient and environmentally friendly cleaning effect. Benzotriazole, in combination with rust inhibitor, inhibits metal corrosion through adsorption film formation mechanism and strengthens the rust prevention effect. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0035] Figure 1 This is a flowchart illustrating the preparation process of a four-in-one cleaning agent for removing oil, wax, oxidation, and rust from copper heat pipes according to an embodiment of the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] The present invention provides a four-in-one cleaning agent for copper heat pipes, which removes oil, wax, oxidation, and rust, comprising the following components by weight percentage: surfactant 27%, natural solvent 8%, chelating agent 12%, organic acid 5%, film-forming agent 3%, synergist 1%, and the balance being deionized water;

[0038] Surfactants include dodecyl dimethylamine oxide and isotridecyl alcohol polyoxyethylene ether;

[0039] The natural solvent is terpinene-4-ol;

[0040] The chelating agent is inositol hexaphosphate;

[0041] The organic acid is citric acid;

[0042] The film-forming agent is chitosan quaternary ammonium salt;

[0043] The synergists include nano-silica and benzotriazole.

[0044] Specifically, in this embodiment, the weight percentages of dodecyl dimethylamine oxide and isotridecyl alcohol polyoxyethylene ether are 15% and 12%, respectively, and the weight percentages of nano silica and benzotriazole are 0.5% and 0.5%, respectively.

[0045] Among them, dodecyl dimethyl amine oxide has amine oxide groups in its molecular structure that give the cleaning agent excellent thickening properties, improve the physical stability of the product, and have excellent emulsification ability for oil stains. It performs better than conventional anionic surfactants and is especially suitable for dealing with heavy oil stains.

[0046] Among them, the branched structure of isomeric tridecyl alcohol polyoxyethylene ether can quickly reduce the interfacial tension between oil and substrate, allowing the cleaning agent to penetrate to the bottom of the oil layer, loosening stubborn stains, and effectively encapsulating grease to form an oil-in-water emulsion, preventing oil from re-adheding. This property is particularly important in industrial cleaning, ensuring that the surface is clean and free of residue after cleaning.

[0047] Nano-silica particles have a large number of hydroxyl groups and unsaturated bonds on their surface, making them prone to agglomeration. However, the microjets and shock waves generated by the cavitation effect of an ultrasonic cleaner can break down the bonding forces between the particles, dispersing the nano-silica into individual particles or small aggregates. This dispersed state can effectively remove tiny surface stains, making it particularly suitable for precision cleaning applications. Adding nano-silica to cleaning agents can improve their thixotropy, suspension stability, and flowability, preventing stratification.

[0048] Benzotriazole forms a dense complex protective film with copper ions on the surface of the copper pipe, preventing corrosive components in the cleaning agent from directly contacting the copper substrate. It effectively inhibits the oxidation reaction of copper and prevents discoloration such as red or green spots after cleaning. It can be used in conjunction with other components in the cleaning agent to remove dirt while avoiding damage to the copper pipe.

[0049] Specifically, the cleaning agent in this embodiment is suitable for chemical cleaning of copper heat pipes and stainless steel parts. It is suitable for use in undiluted or diluted 1:1 solution at a temperature of 50°C and is suitable for immersion cleaning and ultrasonic cleaning.

[0050] The optimal temperature for using the cleaning agent is 50℃. Soak for 15 minutes and use ultrasonic cleaning for 5 minutes. For heavier dirt, the undiluted solution can be used directly for cleaning. The wastewater after cleaning can be diluted and discharged.

[0051] Specifically, in this embodiment, the degreasing rate reaches 98.5%, the copper oxide green is completely dissolved, the anti-rust film takes effect directly, and the corrosion amount is <0.01mg / cm³. 2 92.3% biodegradability.

[0052] like Figure 1 This invention provides a method for preparing a four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes, used to prepare any one of the above-mentioned four-in-one cleaning agents for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes, comprising the following steps:

[0053] Step 1: Prepare a stainless steel reactor and a pH meter. Add deionized water to the stainless steel reactor, preheat to 40°C and stir at a speed of 200 rpm / min.

[0054] Step 2: Add dodecyl dimethylamine oxide and isotridecyl alcohol polyoxyethylene ether to a stainless steel reactor in sequence, heat to 50°C, and stir for 30 minutes until completely transparent;

[0055] Step 3: Slowly add terpinene-4-ol to the stainless steel reactor, maintain 50°C and stir for 20 minutes. Then, slowly add diluted inositol hexaphosphate to the stainless steel reactor and continue stirring at 50°C until the solution is a uniform pale yellow.

[0056] Step 4: Dilute the citric acid and slowly add it into the stainless steel reactor. Maintain the temperature at 55°C and stir. During this process, use a pH meter to monitor the mixture in the stainless steel reactor in real time. Stir until the pH meets the requirements.

[0057] Step 5: Dissolve the chitosan quaternary ammonium salt in warm water, then filter and add it to a stainless steel reactor. Cool to 40°C and stir until there are no particles.

[0058] Step 6: After grinding and dispersing the nano-silica, add it into the stainless steel reactor, then add the solvent-diluted benzotriazole into the stainless steel reactor, and stir for 15 minutes at a controlled temperature of 40℃.

[0059] Step 7: Add deionized water to the remaining amount according to the specific gravity, and stir at 40℃ for 20 minutes;

[0060] Step 8: Adjust the stirring speed to 1200 rpm / min to remove air bubbles, then filter the finished product through a filter bag and store it in a storage tank.

[0061] Specifically, one application of this embodiment is as follows: Using a stainless steel reactor for production, taking 1000 kg as an example, 350 kg of deionized water is added to the stainless steel reactor, then heated to 40°C and stirred at 200 rpm / min. Then, 150 kg of dodecyl dimethylamine oxide and 120 kg of isomeric tridecyl alcohol polyoxyethylene ether are added sequentially to the stainless steel reactor, heated to 50°C and stirred continuously for 30 minutes. Next, 80 kg of terpinene-4-ol is slowly added to the stainless steel reactor, and the temperature is controlled at 50°C while stirring for 20 minutes. Then, 120 kg of inositol hexaphosphate is diluted with 50 kg of deionized water, and the diluted inositol hexaphosphate solution is evenly added to the stainless steel reactor using a dropper, and stirred at 50°C until the solution is a uniform pale yellow. Then, 50 kg of citric acid is dissolved in 50 kg of deionized water, and the solution is added to the stainless steel reactor. During this process, a pH meter is used to monitor the mixture in the stainless steel reactor. Monitoring was performed, and the temperature was controlled at 50℃ while stirring until pH=5.0. Then, 30kg of chitosan quaternary ammonium salt was pre-dissolved in 100kg of warm water. After dissolution, the solution was filtered through a 200-mesh filter and added to a stainless steel reactor. The temperature was lowered to 40℃ and stirred until no particles were present. Then, 5kg of nano-silica was ground in a grinder until no agglomerates were present. After dispersing, the solution was added to the stainless steel reactor. Next, 5kg of benzotriazole was dissolved in 45kg of deionized water. After dissolution, the solution was added to the stainless steel reactor and stirred at 40℃ for 15 minutes. At this point, based on a loss of approximately 920kg of liquid, 80kg of deionized water was added to the stainless steel reactor and stirred at 40℃ for 20 minutes. Then, the speed of the high-speed disperser was adjusted to 1200rpm / min and stirred for 10 minutes to break the air bubbles in the mixture in the stainless steel reactor. After the finished product was brought to a final volume, it was analyzed and tested. The finished product was then filtered through a 500μm filter bag and stored in a sealed storage tank in a well-ventilated place at room temperature.

[0062] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A four-in-one cleaning agent for copper heat pipes, characterized in that: It comprises the following components by weight percentage: surfactant 20-33%, natural solvent 5-10%, chelating agent 10-15%, organic acid 3-8%, film-forming agent 2-5%, synergist 0.5-1.5%, and the balance being deionized water; The surfactants include dodecyl dimethylamine oxide and isotridecyl alcohol polyoxyethylene ether; The natural solvent is terpinene-4-ol; The chelating agent is inositol hexaphosphate; The organic acid is citric acid; The film-forming agent is chitosan quaternary ammonium salt; The synergist includes nano-silica and benzotriazole.

2. The four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 1, characterized in that, The weight percentages of the dodecyl dimethylamine oxide and the isomeric tridecyl alcohol polyoxyethylene ether are 12-18% and 8-15%, respectively, and the weight percentages of the nano silica and the benzotriazole are 0.2-0.6% and 0.3-0.9%, respectively.

3. The four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 1, characterized in that, The cleaning agent is suitable for chemical cleaning of copper heat pipes and stainless steel parts. It can be used in undiluted or diluted 1:1, with a temperature range of 30-50℃. It is suitable for immersion cleaning and ultrasonic cleaning.

4. The four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 1, characterized in that, The degreasing rate reaches 98.5%, the copper oxide green is completely dissolved, the anti-rust film takes effect immediately, and the corrosion rate is <0.01mg / cm³. 2 92.3% biodegradability.

5. A method for preparing the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes as described in any one of claims 1-4, characterized in that, Includes the following steps: Step 1: Prepare a stainless steel reactor and a pH meter. Add the deionized water to the stainless steel reactor, preheat it to 40°C and stir it at a speed of 200 rpm / min. Step 2: Add the dodecyl dimethylamine oxide and the isomeric tridecyl alcohol polyoxyethylene ether sequentially into the stainless steel reactor, heat to 50±2℃, and stir for 30 minutes until completely transparent; Step 3: Slowly add the terpinene-4-ol to the stainless steel reactor, maintain the temperature at 50°C and stir for 20 minutes. Then, slowly add the diluted inositol hexaphosphate to the stainless steel reactor and continue stirring at 50°C until the solution is a uniform pale yellow. Step 4: Dilute the citric acid and slowly add it into the stainless steel reactor. Stir at a controlled temperature of 55°C. During this process, use the pH meter to monitor the mixture in the stainless steel reactor in real time. Stir until the pH meets the requirements. Step 5: Dissolve the chitosan quaternary ammonium salt in warm water, then filter and add it to the stainless steel reactor. Cool to 40°C and stir until no particles remain. Step 6: After grinding and dispersing the nano-silica, add it into the stainless steel reactor, then add the solvent-diluted benzotriazole into the stainless steel reactor, and stir for 15 minutes at a controlled temperature of 40°C. Step 7: Add the remaining deionized water according to the specific gravity, and stir at 40℃ for 20 minutes; Step 8: Adjust the stirring speed to 1200 rpm / min to remove air bubbles, then filter the finished product with a filter bag and store it in a storage tank.

6. The preparation method of the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 5, characterized in that, In step 3, the dilution ratio is 2.5:1 between the inositol hexaphosphate and the deionized water. The inositol hexaphosphate is slowly and evenly dripped into the stainless steel reactor using a dropper.

7. The preparation method of the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 5, characterized in that, In step 4, the dilution ratio is 1:1 between the citric acid and the deionized water. After the citric acid solution is added to the stainless steel reactor and stirred, the pH meter needs to monitor the mixture to reach pH = 4.5 to 5.

0.

8. The preparation method of the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 5, characterized in that, In step 5, the chitosan quaternary ammonium salt is dissolved in 60°C warm water at a ratio of 3:

1. After dissolution, it is filtered through a 200-mesh filter and then added to the stainless steel reactor.

9. The preparation method of the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 5, characterized in that, In step 6, the nano-silica is ground with a grinder until no agglomeration occurs, and then added to the stainless steel reactor after being dispersed. The ratio of benzotriazole to deionized water is 1:9, and the dissolved solution is added to the stainless steel reactor.

10. The preparation method of the four-in-one cleaning agent for degreasing, dewaxing, deoxidizing, and rust prevention of copper heat pipes according to claim 5, characterized in that, In step 8, a 500μm filter bag is used to filter the finished product after volume adjustment. After filtration, the product is stored in a sealed storage tank in a ventilated place at room temperature.

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