Composition for improving surface cleanliness of material and adhesive force of glue and preparation method of composition

Abstract

The invention relates to the technical field of surface cleaning, and discloses a composition for improving the surface cleanliness of a material and the adhesive strength of glue, the composition comprises: 5-15% by mass of a surfactant; 30%-50% by mass of a solvent component; 2%-10% by mass of a functional decomposer; 5%-15% by mass of a volatile synergistic component; 1%-5% by mass of a pH regulator; the surfactant is a nonionic surfactant, an ampholytic surfactant or a combination of the nonionic surfactant and the ampholytic surfactant. By carefully selecting the surfactant, the functional decomposer and the volatile synergistic component, various pollutants such as oil stains, dust, glue residues, oxides and inorganic salts can be effectively removed, and the cleanliness of the surface of the material is remarkably improved. Particularly, when optical fiber, plastic and metal surfaces are treated, tiny impurities and pollutants can be removed, ideal surface conditions are provided for subsequent glue bonding, and the problem of poor bonding caused by residual pollutants is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of surface cleaning, in particular to a composition for improving the cleanliness of a material surface and the bonding strength of glue and a preparation method thereof. Background Art

[0002] With the continuous advancement of modern science and technology, especially the rapid development of optical communications and precision electronics industries, the requirements for material surface cleanliness and glue adhesion are constantly increasing. Especially in the assembly of optical fiber connectors, electronic components, plastics and metal substrates, cleanliness directly affects the subsequent glue bonding effect, which in turn affects the quality and reliability of the product. In order to improve the adhesion and durability of materials, precise surface treatment has become an important link to ensure product performance. Therefore, the development of an efficient, stable and environmentally friendly material surface cleaning and adhesion-enhancing composition has become an important direction for the industry's technological progress.

[0003] In the prior art, a variety of cleaning agents and adhesives have been widely used for cleaning and gluing of material surfaces. However, the effects of most existing cleaning agents in the cleaning process are not ideal, especially for the removal of stains, oil stains and glue residues on the surfaces of optical fibers, metals, plastics, etc., the cleaning effect is often not up to standard. Although some cleaning fluids on the market can remove surface contaminants, they often cause surface damage or fail to effectively improve the adhesion of glue. In addition, cleaning agents in the prior art are often prone to stratification and precipitation during storage, resulting in unstable use effects, which poses a great challenge to the efficiency and reliability of industrial production.

[0004] The main problem of the prior art is that the traditional cleaning agent can not effectively improve the bonding strength between the glue and the substrate while removing the surface pollutants of the material, and the cleaning liquid has poor stability and is prone to quality fluctuations during storage and use. Therefore, how to develop a cleaning agent that can not only effectively remove surface pollutants, but also significantly improve the bonding strength of the glue and has good stability has become a technical problem to be solved by the present invention. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a composition and a preparation method for improving the surface cleanliness of materials and the adhesive strength of glue, which solves the problem that the cleaning agents in the prior art cannot effectively improve the adhesive strength of glue and have poor stability while removing pollutants on the surface of materials.

[0006] To achieve the above objectives, the present invention is implemented by the following technical scheme: a composition for improving the surface cleanliness of a material and the adhesive strength of a glue, the composition comprising:

[0007] 5%–15% by weight of surfactant;

[0008] 30%–50% solvent content by mass;

[0009] 2%–10% by weight of functional decomposer;

[0010] 5%–15% by weight of volatile synergistic ingredients;

[0011] 1%–5% by weight of a pH adjuster;

[0012] 0.5%–2% thickener by weight.

[0013] Preferably, the surfactant is a nonionic surfactant, an amphoteric surfactant or a combination thereof, the solvent component is isopropanol, ethanol, ethyl acetate or a mixture thereof, the functional decomposer is oxalic acid, acetic acid, nitric acid or a mixture thereof, the volatile synergistic component is acetone, ethyl acetate, alcohols or a mixture thereof, the pH adjuster is ammonia water, acetic acid or a mixture thereof, and the thickener is hydroxypropyl methylcellulose, polyvinyl alcohol or a combination thereof.

[0014] Preferably, the pH value of the cleaning solution ranges from 4.5 to 7.5, preferably from 5.0 to 6.5.

[0015] Preferably, the cleaning liquid can effectively remove oil, dust, glue residue, oxides, inorganic salts and other pollutants, and improve the adhesion of the glue after cleaning without causing corrosion or damage to the substrate.

[0016] Preferably, the composition remains stable at room temperature of 20°C-30°C and has a storage period of at least 6 months without delamination, precipitation or failure.

[0017] A method for preparing a composition for improving the surface cleanliness of a material and the adhesive strength of glue, characterized in that it comprises the following steps:

[0018] Step 1: Mix the surfactant and the solvent components and stir evenly;

[0019] Step 2: Add the functional decomposition agent and continue stirring until it is completely dissolved;

[0020] Step 3: Add volatile synergistic ingredients and pH adjuster, and continue stirring until uniform;

[0021] Step 4: Optionally add thickener and stir until completely uniform;

[0022] Step 5. Finally, perform quality control to ensure the stability and effectiveness of the mixture.

[0023] Preferably, the stirring step lasts for 10-30 minutes, the stirring temperature is maintained at 20°C to 30°C, and a low speed of 100-300 rpm is used during the stirring process to avoid bubble formation and ensure a uniform formulation.

[0024] Preferably, the functional decomposer includes oxalic acid, acetic acid, nitric acid or a combination thereof, the volatile synergistic component includes acetone, ethyl acetate, alcohols or a mixture thereof, the pH adjuster includes ammonia water, acetic acid or a mixture thereof, and the thickener is hydroxypropyl methylcellulose or polyvinyl alcohol.

[0025] Preferably, the added solvent component includes isopropanol, ethanol, ethyl acetate or a mixture thereof, and the temperature during stirring is controlled between 25° C. and 30° C. to ensure that each component is completely dissolved to form a stable cleaning solution.

[0026] Preferably, the quality control steps include:

[0027] Measure the pH value of the cleaning solution to ensure it is within the predetermined range;

[0028] Measuring the viscosity of the cleaning fluid to ensure it is suitable for use and will not affect the optical fiber or metal surfaces;

[0029] Check the stability of the cleaning solution by performing a centrifuge test or a sedimentation test.

[0030] The invention provides a composition for improving the surface cleanliness of a material and the bonding strength of glue and a preparation method thereof.

[0031] It has the following beneficial effects:

[0032] 1. The composition of the present invention can effectively remove various pollutants such as oil, dust, glue residue, oxides and inorganic salts by carefully selecting surfactants, functional decomposers and volatile synergistic ingredients, and significantly improve the cleanliness of the material surface. In particular, when processing optical fiber, plastic and metal surfaces, it can remove tiny impurities and pollutants, provide ideal surface conditions for subsequent glue bonding, and avoid poor bonding problems caused by residual pollutants.

[0033] 2. After the surface cleaning treatment of the composition of the present invention, the surface of the material shows stronger hydrophilicity and smoothness, which can provide stronger adhesion for the glue. In particular, after cleaning the optical fiber and metal surface, the bonding force of the glue is significantly improved, avoiding the problem of decreased bonding force due to surface contamination, and ensuring the firm bonding of key components such as the end face of the optical fiber connector.

[0034] 3. The composition of the present invention exhibits good stability during use and can be stored for a long time at room temperature without stratification, precipitation or failure. The storage period can reach more than 6 months, which meets the requirements for long-term storage and stability in industrial production. At the same time, the present invention is suitable for cleaning various materials such as optical fibers, plastics, metals, ceramics, etc., and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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.

[0037] Please see attached Figure 1 The present invention provides a composition and a preparation method for improving the surface cleanliness of a material and the adhesive strength of a glue, including:

[0038] Surfactant: A mixture of non-ionic surfactants and amphoteric surfactants is used to enhance its cleaning ability and remove oil, dust and glue residue attached to the surface.

[0039] Solvent composition: A mixture of isopropyl alcohol and ethyl acetate is used. The solvent not only helps to dissolve and disperse the surfactant, but also effectively removes surface oil and organic pollutants.

[0040] Functional decomposer: Oxalic acid, as a functional decomposer, can effectively decompose oxides, inorganic salts and some difficult-to-remove pollutants. It is particularly suitable for cleaning metal surfaces such as optical fiber connectors.

[0041] Volatile synergistic ingredients: The combination of acetone and ethyl acetate can accelerate the volatilization of the cleaning solution, avoid residues during the cleaning process, and reduce secondary contamination of surface materials.

[0042] pH adjuster: Acetic acid is used as a pH adjuster to control the pH value of the cleaning solution within the range of 5.0-6.5 to avoid corrosive damage to the substrate.

[0043] Thickener: Hydroxypropyl methylcellulose is used as a thickener to increase the viscosity of the liquid, making the cleaning liquid more stable during the cleaning process, reducing loss, improving adhesion, and ensuring a continuous cleaning effect.

[0044] This step is the first step in the preparation method of the present invention, and involves mixing the surfactant and the solvent component. The surfactant is a key component for improving the surface cleanliness of the material. It can effectively reduce the surface tension and help dissolve and disperse pollutants such as oil, dust, etc. The selection of the solvent component is crucial to the solubility and fluidity of the cleaning solution. Therefore, the implementation of this step can provide a uniform base for the subsequent addition of other ingredients and fully prepare for the addition of the functional decomposing agent.

[0045] In this embodiment, the specific operations of step S1 are:

[0046] First, isopropanol and ethyl acetate are mixed in a predetermined mass ratio (e.g., 2:1) and placed in a stirred container. At this point, isopropanol as a solvent can effectively dissolve surfactants and organic pollutants such as oil, dust, etc. required in the cleaning process, while ethyl acetate has good solubility and volatility, which helps to accelerate the drying of the cleaning solution. The mixed liquid plays a role of dissolution and dispersion in this step, and can provide a better dissolution base for subsequent components.

[0047] Next, a surfactant is added to the mixed solvent, mainly a mixture of polyoxyethylene ether and betaine. Polyoxyethylene ether is a non-ionic surfactant that can reduce surface tension and help remove oil stains. Betaine is an amphoteric surfactant that has good surface activity under different pH conditions, so it can enhance the cleaning effect and provide better detergency. During the stirring process, the surfactant will fully dissolve with the solvent and be evenly distributed in the mixed liquid. At this time, the stirring time needs to be controlled within 10 to 15 minutes to ensure that the surfactant is completely dissolved in the solvent to form a uniform solution.

[0048] This step not only provides a stable base liquid for the subsequent addition of a functional decomposition agent by fully mixing the surfactant and the solvent, but also makes the cleaning liquid have better dispersibility and solubility, providing a good cleaning effect for cleaning subsequent surface materials (such as optical fibers, plastics, metals, etc.).

[0049] Step S2 is one of the key steps in the method for preparing the cleaning solution of the present invention, and involves the addition of a functional decomposing agent. The function of the functional decomposing agent is to decompose and remove oxides, inorganic salts and other difficult-to-remove contaminants on the surface of the substrate, especially in the cleaning of metal surfaces and optical fiber connector end faces. This step can not only improve the cleaning effect by adding a decomposing agent such as oxalic acid, but also ensure that the cleaning solution can show excellent decontamination ability on various surface materials.

[0050] In this embodiment, the specific operations of step S2 are:

[0051] In the uniformly mixed liquid of the surfactant and the solvent obtained in step S1, a functional decomposing agent oxalic acid is added. Oxalic acid, as an organic acid, can effectively decompose the oxide layer and inorganic salt deposition on the metal surface, and is particularly suitable for cleaning metal parts such as the end face of the optical fiber connector. The addition of oxalic acid helps to further enhance the active ingredients in the cleaning liquid, and can ensure that the surface of various substrates such as the optical fiber surface and the metal surface are clean and free of residue.

[0052] In order to ensure that oxalic acid is fully dissolved in the solution, in this embodiment, after adding oxalic acid powder to the mixed solution, stirring is continued for 20 minutes. At this time, the stirring speed should be kept at a low speed (about 100-200rpm) to ensure that the oxalic acid is evenly distributed and to avoid the generation of bubbles caused by stirring too fast, thereby affecting the stability of the cleaning solution.

[0053] The amount of oxalic acid added should be adjusted according to the desired cleaning effect and the total weight of the final formula. Generally speaking, the addition ratio of oxalic acid is 2% to 5% of the total formula weight, and the specific ratio is optimized according to actual use requirements and the target surface cleaning degree.

[0054] The implementation of this step ensures the effective dissolution of the functional decomposer in the cleaning solution, so that it can efficiently decompose pollutants in subsequent cleaning operations, especially when cleaning metal surfaces, it can effectively remove oxide layers and other attachments, ensure a smoother surface, and further provide better adhesion for glue bonding. The key to this operation is to ensure the uniform dissolution and distribution of oxalic acid to ensure the stability of the cleaning solution and the cleaning effect.

[0055] Through this step, the decontamination ability of the cleaning liquid is significantly improved, laying a solid foundation for the subsequent cleaning effect, ensuring that various surfaces (such as optical fibers, metals, plastics, etc.) can be efficiently cleaned without damaging the substrate, meeting the cleaning needs of different materials.

[0056] Step S3 is an important part in the preparation process of the cleaning solution, involving the addition of volatile synergistic ingredients and pH regulators. The role of volatile synergistic ingredients is to increase the volatility of the cleaning solution, helping the surface of the substrate after cleaning to dry quickly, thereby avoiding the influence of subsequent operations due to long-term residual liquid. The addition of pH regulators is used to control the pH value of the cleaning solution to ensure that it can effectively clean different substrates (such as optical fiber, metal, plastic, etc.) during the cleaning process without causing damage or corrosion. Therefore, step S3 has an important impact on the effect and stability of the cleaning solution.

[0057] In this embodiment, the specific operations of step S3 are:

[0058] After the functional decomposition agent (such as oxalic acid) is dissolved in step S2, a volatile synergistic component and a pH regulator are added to the mixed solution. First, acetone is added as a volatile synergistic component. Acetone has strong volatility and can accelerate the drying process of the cleaning solution, which helps to leave no water marks or liquid residue on the optical fiber or metal surface after wiping. In addition, acetone also has a certain solubility, which can enhance the cleaning solution's ability to remove oil and dust.

[0059] Subsequently, acetic acid is added as a pH regulator, which can effectively adjust the acidity of the cleaning solution so that its pH value is controlled within an appropriate range. According to the design of the present invention, the pH value of the cleaning solution should be controlled between 4.5 and 7.5, preferably between 5.0 and 6.5. Such a pH range can ensure that the cleaning solution has a good cleaning effect on the surface of materials such as optical fibers, metals, and plastics, while avoiding corrosion or damage to the substrate caused by an overly acidic or overly alkaline environment.

[0060] After adding acetone and acetic acid, continue to stir the mixed liquid for 10 to 15 minutes to ensure that the volatile synergistic ingredients and pH adjuster are fully dissolved and fully react with other ingredients of the cleaning solution. At this time, the stirring temperature should be controlled between 20℃ and 30℃ to avoid excessive temperature causing the volatile synergistic ingredients to evaporate prematurely and affect the mixing effect.

[0061] Through this step, the volatility of the cleaning liquid is enhanced, and it can be dried quickly after the cleaning operation, reducing the impact of residual liquid. In addition, the addition of pH adjuster makes the cleaning liquid more gentle during the entire cleaning process, avoiding unnecessary corrosion or damage to the surface of the substrate, and ensuring high efficiency and safety during the cleaning process. This operation step provides an important guarantee for the final stability and use effect of the cleaning liquid.

[0062] Step S4 is an optional step in the preparation process of the cleaning solution of the present invention, which mainly involves the addition of a thickener. The role of the thickener is to increase the viscosity of the cleaning solution so that it can better adhere to the surface of the substrate during use, increase the retention time of the cleaning solution, and thus enhance its cleaning effect. The addition of a thickener can not only improve the use performance of the cleaning solution, but also ensure that it has appropriate fluidity and adhesion during use, so as to better remove contaminants, which is particularly important in the cleaning process of optical fibers and metal surfaces.

[0063] In this embodiment, the specific operations of step S4 are:

[0064] In step S3, a thickener is added to the mixed solution after the volatile synergistic component and the pH regulator are added. The selected thickener is hydroxypropyl methylcellulose (HPMC), which is a common water-soluble thickener with good solubility and biocompatibility. HPMC can significantly increase the viscosity of the cleaning solution, improve its adhesion and retention, so that the cleaning solution can stay on the surface for a longer time, ensuring that the pollutants are completely removed.

[0065] In the specific operation, HPMC powder is slowly added to the above-mentioned mixed solution and gradually dissolved under stirring. In order to ensure the full dissolution and uniform distribution of the thickener, the stirring time should be maintained at 20 to 30 minutes, and the stirring speed should be controlled at 100 to 150rpm. During stirring, it is necessary to ensure that the temperature is maintained between 20℃ and 30℃ to avoid incomplete dissolution of the thickener or failure of the thickener due to excessive temperature.

[0066] After adding the thickener, the viscosity of the cleaning liquid is significantly increased, giving it good adhesion and fluidity. At this point, the cleaning liquid can not only effectively remove pollutants on optical fibers, metal surfaces and other materials, but also ensure a long stay during the cleaning process, improving cleaning efficiency. When used, the thickened cleaning liquid can better cover the surface to be cleaned, and is particularly suitable for cleaning surfaces with more complex shapes or tiny grooves.

[0067] Through the implementation of this step, the addition of thickener ensures the stability and higher adhesion of the cleaning solution, providing a guarantee for the subsequent cleaning effect.

[0068] Step S5 is the quality control link in the preparation process of the cleaning solution, which aims to ensure that the final cleaning solution has stable performance and consistent effects during use. Quality control includes testing and adjusting key parameters such as pH value, viscosity, stability, etc. of the cleaning solution to ensure that the cleaning solution can maintain the best state during use and meet the expected cleaning effect and safety requirements.

[0069] In this embodiment, the specific operations of step S5 are:

[0070] After the thickener is added and stirred evenly, the quality control stage begins. First, the pH value of the cleaning solution is tested to ensure that it is within the predetermined range, i.e., 4.5 to 7.5, preferably 5.0 to 6.5. Accurate control of the pH value is critical because cleaning solutions that are too acidic or alkaline may corrode or damage the substrate. Therefore, the pH value of the cleaning solution is measured using a portable pH meter or a precision pH test instrument, and adjusted by adding an appropriate amount of ammonia or acetic acid as needed.

[0071] Secondly, check the viscosity of the cleaning fluid. To ensure the effectiveness of the cleaning fluid, the viscosity must be controlled within an appropriate range. Too low a viscosity may result in the cleaning fluid not being able to effectively adhere to the surface of the substrate, resulting in poor cleaning effect; while too high a viscosity may result in poor fluidity of the cleaning fluid, making it difficult to operate. Test the cleaning fluid with a viscometer to ensure that its viscosity value is within an appropriate range (generally 50–150 mPa·s). If a deviation is found, adjust the amount of thickener appropriately.

[0072] In addition, in order to ensure the long-term stability of the cleaning solution, a centrifugation test or a sedimentation test is required to check whether the cleaning solution is stratified, precipitated, or ineffective during storage. This step is crucial to ensure the stability of the cleaning solution under different storage conditions. By placing the cleaning solution sample in a centrifuge for high-speed centrifugation to observe whether it is stratified; or by leaving the cleaning solution at room temperature to observe whether precipitation is generated, its long-term storage stability can be ensured.

[0073] Through the quality control of this step, the final cleaning solution can maintain stable performance during use, ensuring the consistency and safety of the cleaning effect. This link plays a vital role in the quality control of the cleaning solution, ensuring that it can play a role efficiently and safely in practical applications, especially in the cleaning process of optical fibers and metal surfaces with high precision requirements.

[0074] Embodiment 2:

[0075] Embodiment 2 relates to another specific cleaning liquid formula and its preparation method. Compared with embodiment 1, embodiment 2 is different in the selection of volatile synergistic components, functional decomposers and thickeners to meet the cleaning requirements of different types of substrate surfaces, especially for cleaning more complex or difficult optical fiber end faces and precision metal surfaces.

[0076] In this embodiment, the cleaning solution formula used is as follows:

[0077] Surfactant: nonionic surfactant (such as polyvinyl alcohol), amphoteric surfactant (such as dodecyl dimethyl benzyl ammonium chloride), the total mass ratio is 10%;

[0078] Solvent composition: a mixed solvent of isopropanol and ethanol, with a total mass ratio of 40%;

[0079] Functional decomposer: mixture of acetic acid and oxalic acid, with a total mass ratio of 6%;

[0080] Volatile synergistic ingredients: mixture of acetone and ethyl acetate, with a total mass ratio of 8%;

[0081] pH regulator: ammonia water, mass ratio is 2%;

[0082] Thickener: a mixture of hydroxypropyl methylcellulose (HPMC) and polyvinyl alcohol (PVA), with a mass ratio of 3%;

[0083] Water: balance to 100%.

[0084] In the preparation of the cleaning solution, the surfactant and solvent components must first be mixed to form a preliminary solution. This mixing step is critical to ensure effective dispersion and dissolution of the surfactant. By properly selecting the type and ratio of the surfactant and solvent components, efficient decontamination and glue residue removal can be achieved in the subsequent cleaning process. The role of the solvent is not only to dissolve the surfactant, but also to help increase the volatility and solubility of the cleaning solution, thereby enhancing the cleaning effect and accelerating volatilization, avoiding long-term liquid retention on the material surface.

[0085] In this embodiment, step S1 first mixes the surfactant and the solvent components. Specifically, polyvinyl alcohol (PVA) is selected as a non-ionic surfactant, combined with dodecyl dimethyl benzyl ammonium chloride (i.e., an amphoteric surfactant). The two surfactants can work synergistically to provide a strong decontamination effect and show good compatibility on different surfaces. The surfactant and the solvent (a mixed solvent of isopropanol and ethanol) are added to a mixing container in a mass ratio of 10%:40%. Then, the mixture is stirred to ensure that the two are fully dissolved to form a uniform solution. The stirring temperature is controlled between 20°C and 25°C, the stirring speed is set to 150rpm, and the duration is 10 to 15 minutes. This operation helps to avoid the formation of bubbles while maintaining the stability of the solution, ensuring that the surfactant can be completely dispersed in the solvent, thereby providing a good foundation for subsequent steps.

[0086] The key to this step is to fully mix the surfactant and solvent to form a stable solution, thus laying the foundation for the subsequent addition of functional decomposers and synergistic ingredients. By properly selecting surfactants and solvents, not only can the cleaning solution achieve efficient decontamination, but also ensure its applicability and stability in actual use.

[0087] In step S2, a functional decomposition agent needs to be added to the uniformly mixed surfactant and solvent solution. The main purpose of this step is to further enhance the decontamination ability of the cleaning solution, especially for the decomposition of oil stains, glue residues and oxides. The role of the functional decomposition agent is to separate pollutants from the substrate surface through chemical reactions, thereby achieving efficient cleaning. Therefore, selecting a suitable functional decomposition agent and accurately controlling its addition amount are crucial to the final cleaning effect.

[0088] In this embodiment, step S2 is to add oxalic acid to the mixed solution of the surfactant and the solvent. Oxalic acid, as an organic acid, has a strong ability to remove oxides, metal rust and other inorganic pollutants. To ensure the optimal performance of oxalic acid, oxalic acid is added to the mixed solution at a mass ratio of 5%, and stirring is continued at a constant temperature of 25°C to ensure that oxalic acid can be completely dissolved and fully react with other components. The stirring speed is controlled at 180rpm for 10 to 12 minutes to ensure the uniformity of the solution and allow oxalic acid to fully react with other components in the solution.

[0089] The addition of oxalic acid not only enhances the decontamination ability of the cleaning solution, but its acidic properties also help break the binding force between some contaminants and the substrate, further improving the cleaning effect. Through this step, the cleaning solution not only has the basic function of removing oil and glue, but can also effectively remove the oxide layer and other contaminants on the surface of metal and plastic, thus providing a cleaner surface for subsequent glue bonding.

[0090] The key to this step is to ensure that oxalic acid is fully dissolved and evenly distributed so that it can effectively act on pollutants during the subsequent cleaning process. By precisely controlling the addition amount and stirring conditions, the activity and stability of the functional decomposer in the cleaning solution are guaranteed, thereby maximizing the cleaning effect.

[0091] Step S3 is a key step in the preparation of the cleaning solution, which mainly involves the addition of volatile synergistic ingredients and pH regulators. This step aims to further improve the cleaning efficiency of the cleaning solution and its adaptability to the surfaces of different materials. Volatile synergistic ingredients can accelerate the volatilization rate of the cleaning solution, avoid the impact of long-term liquid retention on the surface of the cleaning object, and also improve the solubility of the cleaning solution to help better remove residual pollutants. The pH regulator is used to adjust the acidity and alkalinity of the cleaning solution to adapt it to the cleaning requirements of different materials and effectively avoid corrosion or damage to the surface of the material.

[0092] In the present embodiment, step S3 first adds volatile synergistic ingredients and pH regulators. Specifically, acetone is selected as the volatile synergistic ingredient and added to the cleaning solution at a mass ratio of 5%. Acetone is highly volatile and can evaporate quickly, reducing the time the liquid stays on the surface during the cleaning process, thereby preventing excessive wetting from affecting the cleaning effect. In addition, acetone can help dissolve some difficult-to-remove pollutants when it evaporates, thereby improving the cleaning effect. Then, add an appropriate amount of ammonia water as a pH regulator, adjust the pH value of the cleaning solution to 6.0, and keep it in a slightly alkaline range to optimize the removal effect of stains on the surfaces of materials such as optical fibers, plastics, and metals, while avoiding corrosion to the substrate.

[0093] To ensure that these ingredients are evenly distributed and fully reacted, continue to stir the solution at 25°C, with the stirring speed set at 180rpm for 10 minutes. This process helps the volatile synergistic ingredients and pH adjusters to be fully mixed with the existing solution, ensuring that a uniform cleaning solution is obtained in the end. Through the optimization of this step, the volatility and solubility of the cleaning solution are improved, which is suitable for more diverse cleaning needs, while ensuring the durability of the cleaning effect.

[0094] The key to this step is to precisely control the amount of volatile synergistic ingredients and pH adjusters added to ensure that the cleaning solution evaporates quickly during use, avoids excessive moisture, and that the pH value is maintained within an appropriate range, thereby maximizing cleaning efficiency and ensuring protection of the substrate.

[0095] The main purpose of step S4 is to adjust the viscosity of the cleaning liquid to ensure that it has appropriate fluidity and coating properties in practical applications. The addition of thickener plays a vital role in this step. By adding an appropriate amount of thickener, the viscosity of the cleaning liquid can be effectively increased, thereby enhancing the adhesion of the liquid to the surface to be cleaned in practical use and reducing the dripping and loss of the liquid. In addition, the thickener can also help stabilize the structure of the cleaning liquid, prevent the liquid components from separating or precipitating, and ensure the stability of the formula during storage.

[0096] In this embodiment, step S4 includes adding a thickener to the cleaning solution to adjust its viscosity. Specifically, hydroxypropyl methylcellulose (HPMC) is selected as a thickener, which has a good thickening effect and is compatible with other ingredients. As needed, the mass ratio of hydroxypropyl methylcellulose is 1.5%. After adding the thickener, continue to stir the solution for 10 to 15 minutes, the stirring temperature is maintained at 25°C, and the stirring speed is set to 150rpm to ensure that the thickener is completely dissolved and fully mixed with the aforementioned solution.

[0097] Through this process, the viscosity of the cleaning liquid is appropriately increased, so that it can be more evenly covered and adhered to the surface being cleaned during the cleaning process, especially for optical fiber and metal surfaces. At the same time, the addition of thickeners also helps to improve the durability of the cleaning liquid, prevent it from evaporating too quickly, and ensure the integrity of the cleaning process.

[0098] The key to this step is to control the amount of thickener added and the stirring conditions to ensure that the viscosity of the cleaning liquid is moderate and to avoid excessive increase in viscosity, which will result in the cleaning liquid being unable to be effectively distributed on the surface. Through precise operation, the cleaning liquid can be guaranteed to have stable performance and good adaptability in actual use.

[0099] Step S5 is the last step in the preparation process of the cleaning solution, which mainly involves the quality control of the mixture. The purpose of this step is to ensure that the cleaning solution finally prepared meets the predetermined technical requirements and has the ideal pH value, viscosity, stability and performance to ensure effectiveness and safety in practical applications. The quality control process includes testing the main indicators of the cleaning solution to ensure that it meets the formula requirements and can remain stable during storage and use.

[0100] In this embodiment, step S5 includes checking the pH value, viscosity and stability of the cleaning solution. First, the pH value of the cleaning solution is measured by a pH meter to ensure that it is within a predetermined range (ie, the pH value is 6.0 ± 0.5). If the pH value is not within the range, it can be adjusted by adjusting the amount of ammonia or acetic acid. Secondly, the viscosity of the cleaning solution is measured using a viscometer to ensure that it meets the requirements for use. The viscosity value should be in an appropriate range (such as 50-200cP) to ensure that the cleaning solution can be evenly applied without flowing too fast. For viscosity that is too high or too low, it is necessary to adjust the amount of thickener and readjust it.

[0101] In addition, the stability of the cleaning solution also needs to be tested. Through centrifugation test or sedimentation test, the stratification and precipitation of the cleaning solution after storage for a period of time are detected. In this embodiment, after the cleaning solution is stored at room temperature for 6 months, there is no obvious stratification or precipitation phenomenon, indicating that it has good storage stability. In order to ensure the quality stability of the cleaning solution during long-term storage, regular stability tests can be carried out and the formula can be adjusted if necessary.

[0102] Through the quality control of this step, it can be ensured that the cleaning liquid has ideal performance during use, while reducing the use risks caused by unstable formula or quality problems, ensuring that the cleaning liquid achieves the expected effect in cleaning and gluing different materials.

[0103] Comparative Example 1:

[0104] Steps for preparing traditional cleaning solution:

[0105] Step 1: Select solvent composition

[0106] Purpose: Solvents are used to dissolve other ingredients and serve as a base for cleaning solutions.

[0107] Traditional method: Use ethanol (concentration of about 40%) as the main solvent. As a widely used solvent, ethanol can effectively dissolve dirt and grease, and has moderate volatility, which is suitable for cleaning various surfaces, especially optical fiber and plastic surfaces.

[0108] Specific operations:

[0109] Pour ethanol into the container, making sure it makes up about 40% of the total cleaning solution.

[0110] A small amount of water may be added as needed to adjust the solvent concentration.

[0111] Step 2: Add surfactant

[0112] Purpose: Surfactants are used to reduce the surface tension of liquids, thereby enhancing their penetration and detergency.

[0113] Traditional method: Add ionic surfactants, such as sodium dodecylbenzene sulfonate (SDS), usually at a concentration of about 5%. Ionic surfactants can help cleaning fluids better penetrate dirt, especially grease and glue residues.

[0114] Specific operations:

[0115] 5% of an ionic surfactant was added to ethanol.

[0116] Use a stirrer to stir evenly until the surfactant is completely dissolved and the liquid is clear.

[0117] Step 3: Functional Additives

[0118] Purpose: Functional additives are used to improve cleaning results and target specific contaminants (such as metal oxides or mineral deposits).

[0119] Traditional method: In this step, functional decomposers are not necessarily added to the traditional cleaning solution, but it relies on the coordinated action of solvents and surfactants.

[0120] Specific operations:

[0121] No additional functional decomposers or corrosive chemicals are required. Some traditional formulas may add a small amount of acetic acid to help neutralize the pH of some metal surfaces.

[0122] Step 4: Add pH Adjuster

[0123] Purpose: pH adjusters are used to control the acidity and alkalinity of cleaning fluids to ensure that they are suitable for cleaning surfaces of different materials without causing damage.

[0124] Traditional method: Common pH adjusters are acetic acid or ammonia, which are usually added in an amount of 1%-2%. This will help adjust the pH value of the liquid to neutral (about 7.0), thereby avoiding corrosion to the surface.

[0125] Specific operations:

[0126] Use a pH meter to monitor the pH of your cleaning solution.

[0127] If the pH value is acidic (<6.5), add an appropriate amount of acetic acid to adjust it; if the pH value is alkaline (>7.5), use ammonia water to adjust it.

[0128] Step 5: Stir to combine

[0129] Purpose: Stirring is to ensure that all components are completely dissolved and evenly distributed to avoid stratification or precipitation.

[0130] Traditional method: Place a mixture of ethanol, surfactant, pH adjuster and functional additives into a stirring container and stir for 10-20 minutes.

[0131] Specific operations:

[0132] Use a whisk to mix at low speed (100-200 rpm) to avoid creating bubbles or foam and ensure that the ingredients are evenly distributed.

[0133] Keep the temperature between 20℃ and 25℃ to avoid overheating that affects the dissolution effect.

[0134] Step 6: Quality testing and stability assessment

[0135] Purpose: To ensure that the final cleaning solution meets the quality requirements, is suitable for long-term storage and does not become ineffective.

[0136] Traditional method: After the cleaning solution is prepared, basic quality tests are performed, such as viscosity measurement, pH value measurement, and appearance inspection.

[0137] Specific operations:

[0138] Use a viscometer to measure the viscosity of the cleaning fluid to ensure that it is moderately viscous and not too high or too low, which would affect the cleaning effect.

[0139] Monitor the pH of the cleaning solution to ensure it is in the neutral or slightly acidic range (pH 7.0-7.5) suitable for cleaning optical fibers and metal surfaces.

[0140] Check the clarity of the cleaning solution to ensure there are no impurities or sediment.

[0141] A storage stability test is conducted to ensure that the cleaning solution will not delaminate, precipitate or become unstable during the 6-month storage period.

[0142] Step 7: Packaging and storage

[0143] Purpose: To bottle the prepared cleaning solution to ensure that it is easy to use and remains effective for a long time.

[0144] Traditional method: After the cleaning liquid is prepared, it is properly packaged to ensure good sealing to prevent contaminants from entering and affecting the cleaning effect.

[0145] Specific operations:

[0146] Pour the cleaning solution into a clean container and seal it.

[0147] Mark the production date and expiration date to ensure that the cleaning solution remains effective within half a year under good storage conditions.

[0148] The core of this traditional method is to use ethanol as a solvent and surfactants to reduce surface tension to achieve a cleaning effect. Compared with other more complex cleaning liquid formulas, the traditional method uses relatively simple ingredients, mainly relying on the combination of ethanol and surfactants.

[0149] Although simple, this method is effective enough for cleaning general optical fibers, plastics and metal surfaces, and is relatively inexpensive. The disadvantage is that it has limited cleaning effect on some difficult-to-remove dirt (such as metal oxides or some glue residues).

[0150] Although this method is easy to operate, it may not be suitable for all high-performance cleaning needs, especially when it comes to removing difficult stains or improving glue adhesion, where it has certain limitations.

[0151] Table 1 Comparison table of results of the embodiment

[0152]

[0153]

[0154] Surface cleanliness: The surface after cleaning is observed by scanning electron microscopy (SEM). The higher the surface cleanliness, the less residual contaminants and the smoother the surface.

[0155] Glue Bond: Glue bond is measured by tensile testing, with higher values ​​indicating that the cleaned surface is more suitable for glue bonding.

[0156] pH value: The pH value of the cleaning solution directly affects the applicability to surface materials, especially the corrosiveness to metals and optical fibers. A lower pH value helps remove grease and oxides, but too low a pH value may corrode the surface.

[0157] Dissolution Time: The time it takes for a cleaning fluid to dissolve contaminants. A shorter time means a faster cleaning effect.

[0158] Cleaning fluid stability: The storage stability of the cleaning fluid, especially whether there is stratification, precipitation and other phenomena, determines the effectiveness of its long-term storage and use.

[0159] Cleaning effect: Comprehensively evaluate the actual cleaning ability of the cleaning fluid, including the removal effect of pollutants such as oil, glue residue, and metal oxides.

[0160] Odor: Assess the odor of cleaning fluids by smell, especially when used in confined environments.

[0161] Surface Type: Evaluate the cleaning fluid for what types of materials it is suitable for, assessing its versatility.

[0162] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composition for improving the surface cleanliness of a material and the adhesive strength of a glue, characterized in that: The composition comprises: 5%–15% by weight of surfactant; 30%–50% solvent content by mass; 2%–10% by weight of functional decomposer; 5%–15% by weight of volatile synergistic ingredients; 1%–5% by weight of a pH adjuster; 0.5%–2% thickener by weight.

2. The composition for improving the surface cleanliness of materials and the adhesive strength of glue according to claim 1, characterized in that: The surfactant is a nonionic surfactant, an amphoteric surfactant or a combination thereof, the solvent component is isopropanol, ethanol, ethyl acetate or a mixture thereof, the functional decomposer is oxalic acid, acetic acid, nitric acid or a mixture thereof, the volatile synergistic component is acetone, ethyl acetate, alcohols or a mixture thereof, the pH adjuster is ammonia water, acetic acid or a mixture thereof, and the thickener is hydroxypropyl methylcellulose, polyvinyl alcohol or a combination thereof.

3. The composition for improving the surface cleanliness of materials and the adhesive strength of glue according to claim 1, characterized in that: The pH value of the cleaning solution ranges from 4.5 to 7.5, preferably from 5.0 to 6.

5.

4. The composition for improving the surface cleanliness of a material and the adhesive strength of glue according to claim 1, characterized in that: The cleaning liquid can effectively remove oil, dust, glue residue, oxides, inorganic salts and other pollutants, and improve the adhesion of the glue after cleaning without causing corrosion or damage to the substrate.

5. The composition for improving the surface cleanliness of materials and the adhesive strength of glue according to claim 1, characterized in that: The composition remains stable at room temperature of 20° C. to 30° C. and has a storage period of at least 6 months without delamination, precipitation or failure.

6. A method for preparing a composition for improving the surface cleanliness of a material and the adhesive strength of a glue, according to the composition for improving the surface cleanliness of a material and the adhesive strength of a glue as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Mix the surfactant and the solvent components and stir evenly; Step 2: Add the functional decomposition agent and continue stirring until it is completely dissolved; Step 3: Add volatile synergistic ingredients and pH adjuster, and continue stirring until uniform; Step 4: Optionally add thickener and stir until completely uniform; Step 5. Finally, perform quality control to ensure the stability and effectiveness of the mixture.

7. The method for preparing a composition for improving the surface cleanliness of a material and the adhesive strength of glue according to claim 6, characterized in that: The stirring step lasts for 10–30 minutes, the stirring temperature is maintained at 20°C to 30°C, and a low stirring speed of 100–300 rpm is used during the stirring process to avoid bubble formation and ensure a homogeneous formulation.

8. The method for preparing a composition for improving the surface cleanliness of a material and the adhesive strength of glue according to claim 6, characterized in that: The functional decomposer includes oxalic acid, acetic acid, nitric acid or a combination thereof, the volatile synergistic component includes acetone, ethyl acetate, alcohols or a mixture thereof, the pH regulator includes ammonia water, acetic acid or a mixture thereof, and the thickener is hydroxypropyl methylcellulose or polyvinyl alcohol.

9. The method for preparing a composition for improving the surface cleanliness of a material and the adhesive strength of glue according to claim 6, characterized in that: The added solvent components include isopropyl alcohol, ethanol, ethyl acetate or a mixture thereof, and the temperature is controlled between 25°C and 30°C during stirring to ensure that each component is completely dissolved to form a stable cleaning solution.

10. The method for preparing a composition for improving the surface cleanliness of a material and the adhesive strength of glue according to claim 6, characterized in that: Quality control steps include: Measure the pH value of the cleaning solution to ensure it is within the predetermined range; Measuring the viscosity of the cleaning fluid to ensure it is suitable for use and will not affect the optical fiber or metal surfaces; Check the stability of the cleaning solution by performing a centrifuge test or a sedimentation test.

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