Magnetic force polishing release agent and preparation method thereof

Abstract

The application relates to the field of industrial cleaning and film stripping technology, in particular to a magnetic force polishing film stripping agent and a preparation method thereof, which is prepared from the following raw materials in percentage by weight: 10-20% of environment-friendly organic solvent, 1-10% of corrosion inhibitor, 5-15% of surfactant, 5-15% of lubricant, 1-10% of organic additive, 1-5% of chelating agent, and the rest of deionized water; the environment-friendly organic solvent is composed of D-limonene and gamma-valerolactone; by adopting the above formula, the organic film layers such as acrylate and epoxy resin can be quickly softened and peeled off at normal temperature to 50 DEG C, and high temperature or ultrasonic assistance is not needed, so that energy consumption is reduced. The system does not contain strong acid and strong base, the corrosion inhibitor can form effective protection on active metals such as aluminum, magnesium and zinc, and corrosion and surface damage are avoided; the surfactant and the lubricant can synergistically improve wetting and permeability and reduce mechanical scratches; the chelating agent can stabilize metal ions and prevent redeposition; the organic additive can optimize dissolution kinetics. The overall formula is low-toxic and low-volatility, and has high film stripping efficiency and substrate compatibility.

Description

Technical Field

[0001] This application relates to the field of industrial cleaning and stripping technology, and more specifically, to a magnetic abrasive stripping agent and its preparation method. Background Technology

[0002] With the rapid development of the electronics manufacturing, precision machinery, and metal processing industries, the requirements for surface treatment processes of metal workpieces are becoming increasingly stringent. In actual production, to protect the surface of metal substrates from scratches, oxidation, or contamination, protective films are often applied to their surfaces via screen printing or multi-layer spraying. These films, such as acrylic resin paints, epoxy resin paints, or other types of ink coatings, can effectively improve the appearance and durability of products during normal use. However, during subsequent repairs, recycling, or reprocessing, they often need to be completely removed to restore the original surface condition of the substrate.

[0003] Currently, the removal of such membranes mainly relies on chemical stripping agents. Existing stripping agents can be broadly classified into two categories: organic solvent-based and water-based. Organic solvent-based stripping agents typically use highly soluble organic solvents such as dichloromethane, N-methylpyrrolidone, and benzene compounds. Although they offer relatively fast stripping speeds, they are highly volatile and toxic, posing a serious threat to the health of operators and easily causing air pollution and soil residues. They have been included in the category of high-pollution processes restricted or phased out by the state and are inconsistent with the current policy orientation of green manufacturing and sustainable development.

[0004] In contrast, water-based stripping agents use water as the dispersion medium, significantly improving environmental friendliness and reducing costs. However, commercially available water-based stripping agents generally rely on high-concentration inorganic alkalis, such as sodium hydroxide, sodium silicate, or ethanolamines, as active ingredients, and require ultrasonic cleaning equipment at 60-90°C for stripping operations. While these strongly alkaline systems can remove the film to some extent, they are highly corrosive to metal substrates, especially aluminum, zinc, magnesium, and their alloys, easily leading to surface dulling, pitting, and even structural damage. The stripping process has poor selectivity, making it difficult to guarantee yield, and is particularly unsuitable for rework of precision electronic components or thin-walled complex structures. Furthermore, traditional chemical stripping methods generally suffer from long processing times, high energy consumption, and difficult waste disposal, failing to meet the demands of modern manufacturing for efficient, safe, environmentally friendly, and automated batch processing.

[0005] Therefore, there is an urgent need to develop a novel film removal technology that can fully leverage the physical advantages of magnetic abrasion while also incorporating a safe and environmentally friendly chemical additive system, thereby achieving efficient, gentle, and batch removal of organic films from metal surfaces. Summary of the Invention

[0006] To address the aforementioned technical problems, this application provides a magnetic abrasive release agent and its preparation method.

[0007] In a first aspect, this application provides a magnetic abrasive release agent, which adopts the following technical solution: A magnetic abrasive release agent is prepared from the following raw materials in weight percentages: Environmentally friendly organic solvents 10-20% Corrosion inhibitor 1-10% Surfactant 5-15% Lubricant 5-15% Organic additives 1-10% Chelating agent 1-5% The remainder is deionized water; The environmentally friendly organic solvent is composed of D-limonene and γ-valerolactone.

[0008] By adopting the above technical solution, environmentally friendly organic solvents, corrosion inhibitors, surfactants, lubricants, organic additives, chelating agents and deionized water are scientifically compounded, effectively overcoming the defects of existing film removal technologies such as high toxicity, strong corrosiveness, high energy consumption and great damage to metal substrates.

[0009] The environmentally friendly organic solvents D-limonene and γ-valerol used in this application possess excellent solubility and swelling capabilities, effectively penetrating and softening organic films such as acrylates and epoxy resins. Combined with magnetic abrasive grinding, this significantly improves demolding efficiency. Simultaneously, this system is free of strong acids and alkalis, avoiding the corrosion of reactive metal substrates such as aluminum, zinc, and magnesium by traditional water-based alkaline demolding agents, thus ensuring the integrity of the workpiece surface. D-limonene is a natural plant-derived terpene solvent, and γ-valerol is a biodegradable green solvent; both are low in toxicity, low in volatility, and non-flammable, meeting the requirements of green manufacturing and occupational health and safety. The demolding agent obtained in this application can operate efficiently at temperatures ranging from room temperature to 50°C, without relying on high-temperature heating of 60-90°C or ultrasonic assistance.

[0010] In this application, the environmentally friendly organic solvent first penetrates and swells the organic film layer on the metal surface, weakening its adhesion to the substrate; the corrosion inhibitor simultaneously forms a dynamic protective film on the metal surface, effectively inhibiting corrosion caused by local frictional heating or trace ion release during the grinding process, especially protecting active metals such as aluminum and magnesium; the surfactant reduces interfacial tension, promotes the diffusion of the release agent into the micropores and edges of the film layer, and helps to remove debris from the workpiece surface; the lubricant forms a lubricating interface between the magnetic abrasive and the workpiece, reducing excessive mechanical damage and maintaining surface smoothness; the chelating agent complexes metal ions that may dissolve during the grinding process, preventing their deposition and re-attachment or catalytic side reactions, ensuring the stability of the release solution; and the organic additives further regulate solvent polarity and dissolution kinetics, improving the overall release efficiency.

[0011] Preferably, the weight ratio of D-limonene to γ-valerol is 1:(3-5).

[0012] By adopting the above technical solution and optimizing the weight of D-limonene and γ-valerol, the swelling and peeling efficiency of the release agent on organic films on metal surfaces can be further improved. γ-valerol, as a highly polar, strong dissolving, and low-toxicity green solvent, dominates the penetration and swelling of polar films such as acrylates and epoxy resins. D-limonene, with its excellent non-polar dissolving ability and environmentally friendly properties from natural sources, effectively assists in dissolving hydrophobic components in the film and reducing overall surface tension, thus promoting the spread of the release agent. The two work synergistically to form a composite solvent system, which not only enhances the universal removal capability for various types of inks or coatings but also achieves rapid softening at a lower total solvent concentration, reducing the dependence on subsequent magnetic abrasive physical action. This ensures efficient film removal while further reducing volatility and enhancing system stability.

[0013] Preferably, the corrosion inhibitor is composed of benzotriazole and sodium molybdate in a weight ratio of (5-7):2.

[0014] By adopting the above technical solutions and optimizing the type and dosage of corrosion inhibitors, synergistic and efficient protection can be achieved for various metal substrates, especially copper and its alloys, as well as light metals such as aluminum and magnesium. Benzotriazole effectively inhibits the anodic dissolution process by forming a dense hydrophobic chelate film on the metal surface, exhibiting excellent specific corrosion inhibition effects on copper-based materials. Sodium molybdate, as an environmentally friendly anodic corrosion inhibitor, promotes the formation of a stable passivation oxide film on the metal surface in neutral to weakly alkaline systems, providing long-term protection, especially for reactive metals such as aluminum, zinc, and magnesium. The combination of these two agents in a specific ratio not only overcomes the shortcomings of single corrosion inhibitors in terms of strong selectivity and narrow applicability to specific metals, but also mutually promotes adsorption and film formation kinetics in the weakly alkaline environment of the release agent, enhancing the density and stability of the corrosion-inhibited film.

[0015] Preferably, the chelating agent is composed of sodium gluconate and sodium citrate in a weight ratio of (2-4):1.

[0016] By adopting the above technical solutions, the dosage and type of chelating agents are optimized to improve the complexing ability and solution stability of the demolding system for metal ions. Sodium gluconate has excellent multidentate coordination ability and high water solubility, which can efficiently chelate metal ions such as aluminum, iron, and copper dissolved during demolding or grinding, preventing them from catalyzing organic solvent degradation or forming precipitates that adhere to the workpiece surface; sodium citrate, through its strong complexing and buffering effects, synergistically enhances the complexing ability of polyvalent metal ions, such as Fe. 3+ Cu 2+The two components have a stabilizing effect and moderately adjust the pH of the system to maintain a mild demolding environment. When combined in this ratio, they not only expand the chelation range but also produce a synergistic effect due to complementary molecular structures, effectively inhibiting secondary pollution caused by metal ions and aging of the demolding agent, thus extending its service life.

[0017] Preferably, the surfactant is composed of fatty alcohol polyoxyethylene ether and isomeric tridecyl alcohol polyoxyethylene ether in a weight ratio of 5:(1-3).

[0018] By adopting the above technical solutions and optimizing the type and amount of surfactants, excellent synergistic effects of wetting, penetration, and emulsification can be achieved, improving the interfacial efficiency of the release agent under magnetic abrasive conditions. Fatty alcohol polyoxyethylene ethers have long hydrophobic chains and moderate hydrophilic groups, giving the system good spreadability and strong penetration ability into organic membranes, enabling it to quickly penetrate into the membrane / metal interface and weaken adhesion. Meanwhile, branched isomeric tridecyl alcohol polyoxyethylene ethers, due to their small steric hindrance and low critical micelle concentration, possess superior dynamic wetting and low-temperature emulsification properties, which help to rapidly emulsify and disperse the membrane fragments stripped by magnetic abrasive in the aqueous phase, preventing their redeposition. When combined in this ratio, the high penetration advantage of linear AEO is retained, while the rapid response and anti-recontamination properties of branched ISO-13EO are introduced. Under the high-frequency disturbance and micro-turbulence of magnetic abrasive, an efficient mass transfer channel is formed, which accelerates the delivery of the release agent to the interface and stabilizes the peeling product, thereby shortening the demolding time, improving the cleaning uniformity, and avoiding residual ink or emulsion on the workpiece surface. It is especially suitable for efficient and clean demolding of precision metal parts with complex structures and dense micropores.

[0019] Preferably, the organic additive is a pH adjuster and / or an antifoaming agent.

[0020] By employing the above technical solutions, the pH adjuster regulates the pH value of the release agent, ensuring appropriate swelling of the film while preventing corrosion of reactive metals such as aluminum and magnesium by strong alkalis, thus improving the film-forming efficiency of the corrosion inhibitor. The organic defoamer effectively suppresses foam generated during magnetic grinding due to high-speed stirring and abrasive disturbance, preventing foam from causing release agent overflow, uneven coverage, or interface isolation, ensuring full contact between the release agent and the workpiece surface. Both types of additives are low in toxicity, highly compatible, and have good water dispersibility, further enhancing the controllability and uniformity of the release process.

[0021] Preferably, the pH adjuster is monoethanolamine, diethanolamine, or triethanolamine.

[0022] By adopting the above technical solution, adjusting the pH of the release agent to 7.5-9.0 not only gently raises the system pH to promote film swelling, but also provides certain metal complexing and corrosion inhibition capabilities, especially protecting copper and copper alloys. Simultaneously, the hydroxyl groups in its molecular structure enhance the wettability and water solubility of the solution, contributing to the uniform dispersion of all components. Compared to inorganic bases, ethanolamines avoid the risk of strong corrosion, improve compatibility with sensitive metals such as aluminum and magnesium, and enhance the storage stability of the release agent, making the entire system safer and more efficient.

[0023] Preferably, the lubricant comprises at least one of trimethylolpropane oleate, pentaerythritol ester, polyvinylpyrrolidone, and glyceryl monooleate.

[0024] By employing the above technical solutions, the coefficient of friction between the magnetic abrasive and the metal workpiece can be effectively reduced during magnetic abrasive stripping, forming a dynamic lubrication interface and reducing mechanical scratches and surface roughness degradation. Among these, trimethylolpropane oleate and pentaerythritol oleate possess excellent extreme pressure lubricity and thermal stability, making them suitable for high-intensity grinding environments; glycerol monooleate combines emulsification and film-forming capabilities, improving interfacial compatibility; and polyvinylpyrrolidone enhances dispersion stability through molecular adsorption and helps prevent the redeposition of stripped film debris. These lubricants all have good water solubility or self-emulsifying properties, are highly compatible with the overall environmentally friendly formulation of the stripping agent, and achieve gentle protection of precision metal surfaces while ensuring efficient physical stripping.

[0025] Preferably, the release agent has a pH value of 7.5-9.0 and a viscosity of 10-50 mPa·s at 25°C.

[0026] By adopting the above technical solution and optimizing the parameters of the release agent, a weakly alkaline environment can promote the appropriate swelling and hydrolysis of organic film layers (such as acrylates and epoxy resins) while avoiding the corrosion risk of strong alkalis on reactive metal substrates such as aluminum, magnesium, and zinc, thus ensuring the integrity of the workpiece surface. Simultaneously, this pH range is conducive to the optimal performance of corrosion inhibitors and surfactants. A suitable viscosity ensures that the release agent has good fluidity and penetration, effectively wetting the interface and carrying away the release products; at the same time, the viscosity is not too low, maintaining a certain liquid film thickness and improving the retention ability of lubricants and corrosion inhibitors on the workpiece surface.

[0027] Secondly, this application provides a method for preparing a magnetic abrasive release agent, employing the following technical solution: A method for preparing a magnetic abrasive release agent includes the following preparation steps: The environmentally friendly organic solvent, corrosion inhibitor, surfactant, lubricant, organic additive, chelating agent and deionized water are mixed evenly according to weight percentage to obtain the magnetic abrasive release agent.

[0028] By adopting the above technical solution, a stable magnetic abrasive release agent can be obtained simply by mixing and stirring the components with deionized water according to the formula ratio. Since all components are selected from environmentally friendly additives with good compatibility, the system can quickly dissolve at room temperature to form a uniform, transparent, or microemulsion liquid, ensuring batch-to-batch consistency and long-term storage stability. This method fully retains the high-efficiency dissolving power of the D-limonene / γ-valerol composite solvent, the synergistic protective effect of corrosion inhibitors on multiple metals, and the interfacial strengthening function of surfactants and chelating agents. This allows the final product to quickly wet, penetrate, and peel off the organic film layer on the surface of complex workpieces during magnetic abrasive processing, while avoiding corrosion or recontamination. The overall process is green, efficient, and scalable, meeting the needs of clean industrial production.

[0029] In summary, this application has the following beneficial effects: 1. Efficient film removal and substrate protection: The organic film layer is swelled by the synergistic effect of D-limonene and γ-valerol, and then physically peeled off by magnetic abrasion to achieve fast and thorough film removal. At the same time, it does not contain strong acids or alkalis, and with the help of corrosion inhibitors, it forms a dynamic protective film on the surface of active metals such as aluminum, magnesium, and zinc, which effectively prevents corrosion, pitting or loss of gloss and ensures the integrity of the workpiece surface.

[0030] 2. Green environmental protection and occupational safety: All solvents used are low-toxicity, low-volatility, and biodegradable green chemicals, free of high-risk components such as dichloromethane and benzene compounds, and comply with national environmental protection policies and occupational health and safety standards.

[0031] 3. Energy saving and consumption reduction, strong process adaptability: It can operate efficiently at room temperature to 50℃ without the need for high-temperature heating of 60-90℃ or ultrasonic assistance, which greatly reduces energy consumption; when combined with surfactants and lubricants, the release agent has excellent wettability, penetration and lubricity. Detailed Implementation Example

[0032] Example 1

[0033] A magnetic abrasive release agent is prepared by the following method: Mix 100g of environmentally friendly organic solvent, 100g of corrosion inhibitor, 150g of surfactant, 150g of lubricant (trimethylolpropane oleate), 100g of organic additive, 50g of chelating agent and 350g of deionized water evenly to obtain magnetic abrasive release agent. The release agent has a pH of 7.5 and a viscosity of 50 mPa·s at 25°C. The environmentally friendly organic solvent is composed of D-limonene and γ-valerol in a weight ratio of 1:3. The corrosion inhibitor is composed of benzotriazole and sodium molybdate in a weight ratio of 5:2; The chelating agent is composed of sodium gluconate and sodium citrate in a weight ratio of 2:1; The surfactant is composed of fatty alcohol polyoxyethylene ether (AEO-7) and isomeric tridecyl alcohol polyoxyethylene ether in a weight ratio of 5:1; The organic additive is a pH adjuster (monoethanolamine).

[0034] Example 2

[0035] A magnetic abrasive release agent is prepared by the following method: Mix 150g of environmentally friendly organic solvent, 50g of corrosion inhibitor, 100g of surfactant, 120g of lubricant (pentaerythritol ester), 50g of organic additive, 25g of chelating agent and 505g of deionized water evenly to obtain magnetic abrasive release agent.

[0036] The release agent has a pH of 8 and a viscosity of 30 mPa·s at 25°C. The environmentally friendly organic solvent is composed of D-limonene and γ-valerol in a weight ratio of 1:4. The corrosion inhibitor is composed of benzotriazole and sodium molybdate in a weight ratio of 6:2; The chelating agent is composed of sodium gluconate and sodium citrate in a weight ratio of 3:1; The surfactant is composed of fatty alcohol polyoxyethylene ether (AEO-9) and isomeric tridecyl alcohol polyoxyethylene ether in a weight ratio of 5:(1-3); The organic additive is a pH adjuster (diethanolamine).

[0037] Example 3

[0038] A magnetic abrasive release agent is prepared by the following method: Mix 200g of environmentally friendly organic solvent, 10g of corrosion inhibitor, 50g of surfactant, 50g of lubricant (polyvinylpyrrolidone), 10g of organic additive, 10g of chelating agent and 670g of deionized water evenly to obtain magnetic abrasive release agent.

[0039] The release agent has a pH of 9.0 and a viscosity of 10 mPa·s at 25°C. The environmentally friendly organic solvent is composed of D-limonene and γ-valerol in a weight ratio of 1:5; The corrosion inhibitor is composed of benzotriazole and sodium molybdate in a weight ratio of 7:2; The chelating agent is composed of sodium gluconate and sodium citrate in a weight ratio of 4:1; The surfactant is composed of fatty alcohol polyoxyethylene ether (AEO-10) and isomeric tridecyl alcohol polyoxyethylene ether in a weight ratio of 5:3; The organic additive is a pH adjuster (triethanolamine).

[0040] Example 4

[0041] A magnetic abrasive release agent, the difference between this embodiment and Example 1 is that the environmentally friendly organic solvent is composed of D-limonene and γ-valerolactone in a weight ratio of 1:1.

[0042] Example 5

[0043] A magnetic abrasive stripping agent, the difference between this embodiment and Example 1 is that the corrosion inhibitor is benzotriazole.

[0044] Example 6

[0045] A magnetic abrasive release agent, the difference between this embodiment and Example 1 is that the chelating agent is sodium gluconate.

[0046] Example 7

[0047] A magnetic abrasive release agent, the difference between this embodiment and Example 1 is that the surfactant is fatty alcohol polyoxyethylene ether (AEO-7). Comparative Example

[0048] Comparative Example 1 A magnetic abrasive release agent, the difference between this comparative example and Example 1 is that no environmentally friendly organic solvent is added.

[0049] Comparative Example 2 A magnetic abrasive release agent, the difference between this comparative example and Example 1 is that the environmentally friendly organic solvent is γ-valerolactone.

[0050] Comparative Example 3 A magnetic abrasive release agent, the difference between this comparative example and Example 1 is that ethylene glycol butyl ether is used instead of D-limonene.

[0051] Comparative Example 4 A magnetic abrasive release agent, the difference between this comparative example and Example 1 is that no corrosion inhibitor is added.

[0052] Comparative Example 5 A magnetic abrasive release agent, the difference between this comparative example and Example 1 is that sodium pyrophosphate is used instead of a chelating agent. Detection methods / test methods

[0053] Demolding efficiency: Sample preparation: Aluminum alloy 7075 (50×50×2mm) was sandblasted, then acrylic ink was screen printed with a film thickness of 20μm, cured at 150℃ for 30min, cooled and weighed. Place the sample, a stainless steel magnetic needle (Φ0.5mm, 5g), and 200mL of release agent into a magnetic grinder, grind at 800rpm, and treat at room temperature for 10min. Remove, rinse, dry, and weigh. Calculate the film removal rate: Film removal rate = (m0-m1) / m0×100% (m0 is the initial mass of the film layer, and m1 is the mass of the residual film).

[0054] Corrosion testing of metal substrates: Sample preparation: Prepare aluminum AA2024, zinc alloy AZ91D, and magnesium alloy ZK60. Polish the sample, clean it with alcohol, weigh it, then immerse it in the release agent (50℃×2h), clean it, dry it and weigh it. Calculate the corrosion rate: Corrosion rate = (K × W) / (A × T × ρ), (K = 8.76 × 10⁻⁶) 4 W weight loss (mg), A area (cm²) 2 (T, time h, ρ, density g / cm³). Experimental data are shown in Table 1: Table 1. Experimental data of Examples 1-7 and Comparative Examples 1-5

[0055] The experimental data above show that by combining D-limonene and γ-valerol with environmentally friendly solvents, along with corrosion inhibitors, chelating agents, and other components, a dual effect of efficient film removal and metal protection is achieved without adding strong acids, strong alkalis, or toxic organic solvents.

[0056] Comparing the experimental data of Example 1 with those of Comparative Examples 1-3, this application demonstrates that the combination of D-limonene and γ-valerolactone exhibits a significant synergistic swelling effect, which improves the release efficiency of the release agent. Furthermore, it is safer and gentler than traditional solvents, effectively ensuring the integrity of the metal substrate while enhancing release efficiency.

[0057] A comparison of the experimental data from Example 1 with those from Comparative Examples 4-5 demonstrates that corrosion inhibitors are essential components for ensuring the integrity of metal surfaces, and that they have minimal impact on the release agent efficiency while improving corrosion protection. In this application, the sodium gluconate / sodium citrate compound chelating agent not only efficiently complexes metal ions to maintain the stability of the release agent but also enhances the release agent efficiency.

[0058] Comparing the experimental data of Example 1 with those of Comparative Examples 4-5, the demolding rate of Examples 4-7 decreased, and the demolding efficiency of Examples 6-7 was significantly reduced due to the use of a single chelating agent or surfactant. The corrosion rate of Example 5 was increased due to the use of a single corrosion inhibitor. This indicates that the optimal compounding range and synergistic effect of each component in this invention are the comprehensive technical effects of achieving high demolding efficiency and low metal corrosion.

[0059] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A magnetic abrasive release agent, characterized in that, It is prepared from the following raw materials by weight percentage: Environmentally friendly organic solvents 10-20% Corrosion inhibitor 1-10% Surfactant 5-15% Lubricant 5-15% Organic additives 1-10% Chelating agent 1-5% The remainder is deionized water; The environmentally friendly organic solvent is composed of D-limonene and γ-valerolactone.

2. The magnetic abrasive release agent according to claim 1, characterized in that: The weight ratio of D-limonene to γ-valerol is 1:(3-5).

3. The magnetic abrasive release agent according to claim 1, characterized in that: The corrosion inhibitor is composed of benzotriazole and sodium molybdate in a weight ratio of (5-7):

2.

4. The magnetic abrasive release agent according to claim 1, characterized in that: The chelating agent is composed of sodium gluconate and sodium citrate in a weight ratio of (2-4):

1.

5. The magnetic abrasive release agent according to claim 1, characterized in that: The surfactant is composed of fatty alcohol polyoxyethylene ether and isomeric tridecyl alcohol polyoxyethylene ether in a weight ratio of 5:(1-3).

6. The magnetic abrasive release agent according to claim 1, characterized in that: The organic additive is a pH adjuster and / or an antifoaming agent.

7. The magnetic abrasive release agent according to claim 1, characterized in that: The pH adjuster is monoethanolamine, diethanolamine, or triethanolamine.

8. The magnetic abrasive release agent according to claim 1, characterized in that: The lubricant includes at least one of trimethylolpropane oleate, pentaerythritol ester, polyvinylpyrrolidone, and glyceryl monooleate.

9. The magnetic abrasive release agent according to claim 1, characterized in that: The release agent has a pH value of 7.5-9.0 and a viscosity of 10-50 mPa·s at 25°C.

10. A method for preparing a magnetic abrasive release agent as described in any one of claims 1-9, characterized in that, The preparation steps include the following: The environmentally friendly organic solvent, corrosion inhibitor, surfactant, lubricant, organic additive, chelating agent and deionized water are mixed evenly according to weight percentage to obtain the magnetic abrasive release agent.

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