Low-temperature high-efficiency environment-friendly cleaning agent, manufacturing method and application thereof

Abstract

The application provides a low-temperature high-efficiency environment-friendly cleaning agent and a manufacturing method and application thereof, and comprises the following components in percentage by mass: a bio-based olefin solvent 30-45%; a low-VOC solvent with a hydroxyl group 20-35%; a surfactant 5-10%; a weak acidic pH regulator 1-3% for adjusting the pH value of the system to 4.5-6.0; a natural chelating agent 2-5%; an environment-friendly corrosion inhibitor 0.5-2%; a metal passivator 0.3-1.5%; a natural antioxidant 0.2-1%; deionized water 5-26%; through the synergistic effect among the components, the functions of 'low-temperature high-efficiency cleaning, low damage to the base material, and full-component environmental compliance' are achieved, the high-efficiency removal rate of rosin flux and / or solder paste residue is realized at low temperature, the limitation of traditional cleaning agents 'high temperature for high efficiency' is broken through, harmful corrosion inhibitors containing phosphorus and nitrogen are abandoned, a protective film is formed simultaneously in the cleaning process, the oxidation inhibition of the metal base material and the decrease of the mass loss rate are realized, and the environmental protection standard is met.

Description

Technical Field

[0001] This invention relates to the field of cleaning agent technology, and in particular to a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. Background Technology

[0002] In the field of high-density electronic packaging manufacturing, after the soldering process, products such as printed circuit boards (PCBs), semiconductor devices, semiconductor chips, electronic components, and precision instruments are prone to having rosin flux and solder paste residue (containing tin oxides, organic acid salts, etc.) remaining on their surfaces. These residues can affect the conductivity, reliability, and subsequent packaging quality of the products. Therefore, cleaning is a critical process. Efficient and non-destructive cleaning of post-soldering residues has become a key bottleneck restricting product reliability and the level of green manufacturing. Current mainstream industrial cleaning technologies have the following systemic defects: Traditional cleaning processes generally rely on high-temperature water-based or solvent-based cleaning agents, operating at relatively high temperatures, typically between 60–80°C. They achieve decontamination through heat-driven chemical dissolution and mechanical rinsing. However, while these cleaning agents efficiently remove residues, they cause significant thermal stress damage to heat-sensitive packaging materials (such as BGA, QFN, and CSP), manifesting as substrate warping, interlayer debonding, copper / tin pad oxidation and discoloration, and a quality loss rate as high as 0.05–0.1%, seriously threatening the long-term reliability of devices. Studies have shown that the mismatch in thermal expansion coefficients between epoxy resin and the metal substrate at high temperatures leads to packaging layer warping and interlayer debonding. When the thickness of the oxide layer (CuO, SnO) on the metal surface exceeds 0.05 μm, it directly results in increased electrical contact resistance and a significantly increased risk of solder joint failure.

[0003] In response to increasingly stringent global environmental regulations, the industry is gradually shifting towards environmentally friendly cleaning agents that are low in VOCs and free of phosphorus and nitrogen. However, existing technologies generally suffer from performance bottlenecks: On the one hand, while bio-based olefin solvents (such as limonene) have advantages in high biodegradability and low toxicity, their low-temperature cleaning ability is insufficient when used alone, and their removal rate of high-viscosity solder paste residue is generally below 85%. On the other hand, although commercially available low-VOC cleaning agents meet the VOC limits of REACH regulations (REACH Annex XVII requires VOC limits of ≤150g / L for solvent-based cleaning agents and ≤100g / L for water-based cleaning agents), they mostly rely on strongly alkaline systems (pH>9) or high concentrations of surfactants to achieve cleaning, leading to increased corrosion of metal substrates and a lack of effective protection mechanisms for sensitive metals such as copper and tin. In addition, although existing technologies have disclosed copper cleaning formulations containing natural corrosion inhibitors (such as benzotriazole), they still require operation at temperatures above 50°C and do not systematically integrate weakly acidic pH control and micellar kinetic optimization, failing to achieve efficient penetration and dissolution of micro-gap residues at low temperatures.

[0004] While existing technologies have explored the application of single-component bio-based olefin solvents (such as limonene) or natural corrosion inhibitors (such as phytic acid), they have been limited by the lack of synergistic regulation mechanisms between components, and have not yet been able to break through the technical barrier that makes it impossible to achieve "low-temperature and high-efficiency cleaning, low damage to substrates, and environmental compliance of all components".

[0005] The above background information is disclosed only to assist in understanding the inventive concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical teachings. In the absence of clear evidence, the novelty and inventiveness of the above application shall be deemed to be incomplete. Summary of the Invention

[0006] To address the aforementioned technical problems, the present invention aims to provide a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. Through the synergistic effect between its components, it achieves a three-in-one function of "low-temperature, high-efficiency cleaning—low damage to the substrate—environmentally friendly and compliant components." It achieves a high-efficiency removal rate of rosin flux and / or solder paste residue at low temperatures, overcoming the limitation of traditional cleaning agents that "only achieve high efficiency at high temperatures." At the same time, it eliminates harmful corrosion inhibitors containing phosphorus and nitrogen, and simultaneously forms a protective film during the cleaning process. This not only inhibits oxidation of the metal substrate and reduces the rate of quality loss, but also meets environmental protection standards.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: On the one hand, the present invention provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, comprising the following components by weight percentage: Bio-based olefin solvent 30-45%; Low-VOC solvents containing hydroxyl groups: 20-35%; Surfactant 5-10%; A weakly acidic pH adjuster at 1-3% is used to adjust the system pH to 4.5-6.0; Natural chelating agent 2-5%; Environmentally friendly corrosion inhibitor 0.5-2%; Metal passivating agent 0.3-1.5%; Natural antioxidants 0.2-1%; Deionized water 5-26%.

[0008] The purpose of this invention is to provide a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. Through the synergistic effect between its components, it achieves a three-in-one function of "low-temperature high-efficiency cleaning - low damage to substrate - environmental compliance of all components". It achieves a high-efficiency removal rate of rosin flux and / or solder paste residue at low temperatures, overcoming the limitation of traditional cleaning agents that "only achieve high efficiency at high temperatures". At the same time, it eliminates harmful corrosion inhibitors containing phosphorus and nitrogen, and forms a protective film simultaneously during the cleaning process. This not only inhibits the oxidation of metal substrates and reduces the quality loss rate, but also meets environmental protection standards.

[0009] In some embodiments, the bio-based olefin solvent includes one or more of limonene, d-limonene, and terpinene. The low-VOC solvent with hydroxyl groups includes any one or more of terpineol and terpineol derivatives.

[0010] In some embodiments, the mass ratio of the bio-based olefin solvent to the low-VOC solvent with hydroxyl groups is (1.0-2.25):1, and the VOC content of the low-VOC solvent with hydroxyl groups is ≤50g / L.

[0011] In some embodiments, the surfactant comprises one or more of fatty alcohol polyoxyethylene ether AEO-9 and cocamidopropyl betaine, wherein the surfactant has an HLB value of 12-25 and a surface tension of 28-32 mN / m at room temperature.

[0012] In some embodiments, the weakly acidic pH adjuster is diammonium citrate.

[0013] In some embodiments, the environmentally friendly corrosion inhibitor includes one or more of benzotriazole and organic azole derivatives; The metal passivating agent is phytic acid; The mass ratio of the environmentally friendly corrosion inhibitor to the metal passivator is (1-4):1.

[0014] In some embodiments, the organic azole derivative includes one or more of methylbenzotriazole and benzimidazole.

[0015] On the other hand, the present invention provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent, comprising the following steps: S1 adds a bio-based olefin solvent and a low-VOC solvent with hydroxyl groups to a reaction vessel in a mass ratio, heats to a preset temperature, and starts stirring to obtain a homogeneous compound solvent. S2. Maintain the preset temperature of step S1, add the surfactant to the homogeneous compound solvent obtained in step S1, increase the stirring rate and stir until the surfactant is completely dissolved and dispersed. S3 is cooled to the preset temperature, and a weak acid pH adjuster and a natural chelating agent are added sequentially while stirring. The pH value of the system is adjusted to 4.5-6.0 to obtain the reaction system. S4. While maintaining the preset temperature of step S3, mix the environmentally friendly corrosion inhibitor and the metal passivator evenly according to the mass ratio, and then add them dropwise to the reaction system obtained in step S3. After the dropwise addition is completed, continue stirring until a corrosion-inhibiting and passivating system is formed. S5 is added to natural antioxidants and deionized water, and the mixture is stirred to ensure thorough mixing. S6 homogenizes the mixture under high pressure to obtain a low-temperature, high-efficiency, and environmentally friendly cleaning agent.

[0016] In some embodiments, in step S1, the temperature is raised to a preset temperature of 35-40°C, the stirring rate is 200-300 r / min, and the stirring time is 15-20 min. In step S2, the preset temperature of step S1 is maintained at 35-40℃, the stirring speed is increased to 400-500 r / min, and the stirring time is 25-30 min; In step S3, the temperature is lowered to a preset temperature of 30-32℃, the stirring rate is 300-350 r / min, and the stirring time is 15-20 min; In step S4, the preset temperature of step S3 is maintained at 30-32℃, the dropping rate is 0.3-0.5mL / min, and the stirring time is continued for 20-25min after the dropping is completed; In step S5, the stirring rate is 250-300 r / min and the stirring time is 10-15 min; In step S6, the pressure for high-pressure homogenization of the mixture is 20-25 MPa, and the homogenization is performed 1-2 times.

[0017] In another aspect, the present invention provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described in any of the preceding claims in the cleaning of packaging materials.

[0018] This invention provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application, which have the following beneficial effects: 1) This invention provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. Through the synergistic effect between its components, it achieves a three-in-one function of "low-temperature, high-efficiency cleaning - low damage to substrate - environmental compliance of all components". It achieves a high-efficiency removal rate of rosin flux and / or solder paste residue at low temperatures, breaking through the limitation of traditional cleaning agents that "only achieve high efficiency at high temperatures". At the same time, it eliminates harmful corrosion inhibitors containing phosphorus and nitrogen, and forms a protective film simultaneously during the cleaning process. This not only inhibits the oxidation of metal substrates and reduces the quality loss rate, but also meets environmental protection standards.

[0019] 2) This invention provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. This technical solution, through the synergistic effect between its components, achieves a groundbreaking integration of "high-efficiency cleaning—low damage to the substrate—environmentally friendly and compliant components" at low temperatures (30–45℃), completely overturning the traditional high-temperature cleaning approach that relies on heat energy. Its core mechanism lies in the triple synergy of the solvent-surfactant-corrosion-passivation system, constructing an integrated dynamic response mechanism of "dissolution-encapsulation-protection." Without sacrificing cleaning efficiency, it achieves a dual leap in environmental friendliness and material protection. The specific mechanism is as follows: (1) Low-temperature and high-efficiency cleaning mechanism: Bio-based olefin solvents, with their hydrophobic rigid ring structure, efficiently embed into the three-dimensional cross-linked network of rosin resin, disrupting its van der Waals forces and π-π stacking, thereby achieving physical penetration of rosin flux residues; Low-VOC solvents with hydroxyl groups form strong hydrogen bonds with organic acid salts (such as rosin tin acid and copper fatty acids) in solder paste residues through polar hydroxyl groups, thereby achieving chemical dissolution; Bio-based olefin solvents and low-VOC solvents with hydroxyl groups are combined (mass ratio 1.0-2.25:1) to dissolve organic residues; In a weakly acidic environment of pH 4.5–6.0, the critical micelle concentration (CMC) of the surfactant drops to 0.05–0.1 g / L, enabling it to rapidly form micelles at low temperatures to encapsulate and stably suspend dissolved organic residues, especially achieving precise removal of micro-gap residues such as BGA and QFN. The synergistic effect of bio-based olefin solvents, low-VOC solvents with hydroxyl groups, and surfactants enables rosin flux and / or solder paste residues to achieve a high residue removal rate of ≥90.1% at 30–45℃ (more than 30% lower than the traditional cleaning temperature of 60–80℃, with a maximum reduction of 50%), which is 3-16% higher than that of traditional cleaning agents (80–87.8%), without relying on high-temperature heat energy (60-80℃).

[0020] (2) Low-damage mechanism of substrate: The environmentally friendly corrosion inhibitor coordinates with the d orbitals of copper and tin substrates through the lone pair electrons of the N atom, forming a dense monomolecular corrosion inhibitor film on the metal surface, blocking the contact between O2 and H2O, and inhibiting electrochemical corrosion; the metal passivator interacts with Cu² in the gaps of the corrosion inhibitor film. + Sn² + (Core metal ions of the encapsulation material) form a three-dimensional chelate network, construct an organic-inorganic hybrid passivation layer, and fill the defects of the corrosion inhibition film; the environmentally friendly corrosion inhibitor and metal passivator are compounded in a mass ratio to achieve simultaneous protection of "washing and protection" during the cleaning process, so that the metal mass loss rate of copper, aluminum and tin substrates is ≤0.03%, which is far lower than the damage level of 0.05-0.1% of traditional cleaning agents.

[0021] (3) Environmental compliance mechanism of all components: The biodegradability rate of the cleaning agent in this application is ≥87.6%, which meets the OECD 301B standard for easy biodegradability; the VOC content of the cleaning solution is 37.8–42.1 g / L, which is far lower than the limit of ≤150 g / L for solvent-based cleaning agents in Annex XVII of the REACH Regulation. The VOC content of the cleaning solution (25% diluted solution, water-based system) in Example 8 is 10.0 g / L, which is far lower than the limit of ≤100 g / L for water-based cleaning agents in Annex XVII of the REACH Regulation; the formulation of this application does not contain RoHS 2.0 restricted substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers); the above results prove that this application constructs a "degradable and low-emission" green system, and the VOC emissions are reduced by more than 60% compared with traditional solvent-based cleaning agents. Because the waste is easily biodegradable, the treatment cost is reduced by 50% compared with traditional cleaning agents. The core indicators meet the core requirements of international environmental regulations such as REACH, RoHS, and OECD.

[0022] 3) This invention provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. Through the synergistic effect of its components, this technical solution maintains a residue removal rate of ≥90.1% and a corrosion inhibition effect retention rate of ≥90% after 6 months of storage at room temperature (25±5℃) and more than 20 days of cyclic use. Its service life is more than double that of traditional cleaning agents. The core synergistic mechanism is as follows: Storage stability: The homogeneous solution system reduces the risk of phase separation; the weakly acidic pH adjuster maintains the system's pH stability at 4.5-6.0; the natural chelating agent blocks metal ions to prevent catalytic oxidation; the natural antioxidant constructs an antioxidant network to delay the oxidation of unsaturated solvent (limonene). The four factors work synergistically to ensure that the cleaning agent can be stored at room temperature (25±5℃) for 6 months without stratification or precipitation. Stable for repeated use: The surfactant forms shear-resistant micelles that withstand ultrasonic shear forces without damage; the low-VOC solvent with hydroxyl groups has a low volatility, maintaining a stable system concentration; the natural chelating agent blocks metal ions released during the cleaning process, preventing them from catalyzing solvent / surfactant degradation. The synergistic effect of these three factors ensures that the cleaning agent still has a residue removal rate of ≥90.1% after being used for more than 20 days. The environmentally friendly corrosion inhibitor forms a highly coordinated monomolecular corrosion inhibitor film with the metal, while the metal passivator forms a three-dimensional chelated passivation layer in the intermembrane gap. The two work synergistically to fill membrane defects, enabling rapid self-repair after damage. The weakly acidic pH (4.5-6.0) stabilizes the membrane structure. The natural chelating agent blocks the catalytic sites of metal ions, and the natural antioxidant scavenge free radicals, blocking the degradation of the corrosion inhibitor / passivator. The low-VOC solvent with hydroxyl groups maintains the concentration balance of the system, ensuring the stability of the effective component concentration during circulation. The homogeneous solution system avoids component enrichment caused by phase separation, and the circulating filtration removes residual impurities, reducing membrane scouring and interference, further maintaining the integrity of the corrosion inhibitor film. The synergistic effect of the components in this application ensures that the corrosion inhibition effect of the cleaning agent remains ≥90% after more than 20 days of circulating use. Lifespan leap: The environmentally friendly corrosion inhibitor and metal passivator form a double-layer self-healing passivation film, and the surfactant has strong resistance to degradation. The synergy of the two extends the service life of the cleaning agent by more than 1 times compared to traditional cleaning agents (7-10 days of circulation) (this solution can reach 20 days). The optimized formula of this invention achieves self-sustaining stability in three dimensions—physical, chemical, and interfacial—through the synergistic effect of structural stability, environmental stability, chemical stability, and interfacial stability. This completely eliminates the linear consumption pattern of "one-time use, one batch wasted," thus improving the service life of the cleaning agent. Attached Figure Description

[0023] Figure 1 The present invention provides a flowchart of a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. However, those skilled in the art will understand that the embodiments described below are some embodiments of the present invention, but not all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0025] On the one hand, the present invention provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, comprising the following components by weight percentage: Bio-based olefin solvent 30-45%; Low-VOC solvents containing hydroxyl groups: 20-35%; Surfactant 5-10%; A weakly acidic pH adjuster at 1-3% is used to adjust the system pH to 4.5-6.0; Natural chelating agent 2-5%; Environmentally friendly corrosion inhibitor 0.5-2%; Metal passivating agent 0.3-1.5%; Natural antioxidants 0.2-1%; Deionized water 5-26%.

[0026] The purpose of this invention is to provide a low-temperature, high-efficiency, and environmentally friendly cleaning agent, its manufacturing method, and its application. Through the synergistic effect between its components, it achieves a three-in-one function of "low-temperature high-efficiency cleaning - low damage to substrate - environmental compliance of all components". It achieves a high-efficiency removal rate of rosin flux and / or solder paste residue at low temperatures, overcoming the limitation of traditional cleaning agents that "only achieve high efficiency at high temperatures". At the same time, it eliminates harmful corrosion inhibitors containing phosphorus and nitrogen, and forms a protective film simultaneously during the cleaning process. This not only inhibits the oxidation of metal substrates and reduces the quality loss rate, but also meets environmental protection standards.

[0027] The purity of the bio-based olefin solvent is preferably ≥98%; The purity of the natural chelating agent is preferably ≥99%.

[0028] Preferably, the bio-based olefin solvent includes one or more of limonene, d-limonene, and terpinene; The low-VOC solvent with hydroxyl groups includes any one or more of terpineol and terpineol derivatives.

[0029] The boiling point of the terpineol is preferably 214-220℃.

[0030] Preferably, the mass ratio of the bio-based olefin solvent to the low-VOC solvent with hydroxyl groups is (1.0-2.25):1, and the VOC content of the low-VOC solvent with hydroxyl groups is ≤50g / L.

[0031] Preferably, the surfactant comprises one or more of fatty alcohol polyoxyethylene ether AEO-9 and cocamidopropyl betaine, wherein the surfactant has an HLB value of 12-25 and a surface tension of 28-32 mN / m at room temperature.

[0032] The HLB value of the fatty alcohol polyoxyethylene ether AEO-9 is preferably 12-13, and the surface tension at room temperature is preferably 28-32 mN / m.

[0033] Preferably, the weakly acidic pH adjuster is diammonium hydrogen citrate; The natural chelating agent is sodium gluconate; The natural antioxidant mentioned is vitamin E.

[0034] Preferably, the environmentally friendly corrosion inhibitor includes one or more of benzotriazole and organic azole derivatives; The metal passivating agent is phytic acid; The mass ratio of the environmentally friendly corrosion inhibitor to the metal passivator is (1-4):1.

[0035] Preferably, the organic azole derivative includes one or more of methylbenzotriazole and benzimidazole.

[0036] On the other hand, such as Figure 1 As shown, the present invention provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which includes the following steps: S1 adds a bio-based olefin solvent and a low-VOC solvent with hydroxyl groups to a reaction vessel in a mass ratio, heats to a preset temperature, and starts stirring to obtain a homogeneous compound solvent. S2. Maintain the preset temperature of step S1, add the surfactant to the homogeneous compound solvent obtained in step S1, increase the stirring rate and stir until the surfactant is completely dissolved and dispersed. S3 is cooled to the preset temperature, and a weak acid pH adjuster and a natural chelating agent are added sequentially while stirring. The pH value of the system is adjusted to 4.5-6.0 to obtain the reaction system. S4. While maintaining the preset temperature of step S3, mix the environmentally friendly corrosion inhibitor and the metal passivator evenly according to the mass ratio, and then add them dropwise to the reaction system obtained in step S3. After the dropwise addition is completed, continue stirring until a corrosion-inhibiting and passivating system is formed. S5 is added to natural antioxidants and deionized water, and the mixture is stirred to ensure thorough mixing. S6 homogenizes the mixture under high pressure to obtain a low-temperature, high-efficiency, and environmentally friendly cleaning agent.

[0037] Preferably, in step S1, the temperature is raised to a preset temperature of 35-40°C, the stirring speed is 200-300 r / min, and the stirring time is 15-20 min; In step S2, the preset temperature of step S1 is maintained at 35-40℃, the stirring speed is increased to 400-500 r / min, and the stirring time is 25-30 min; In step S3, the temperature is lowered to a preset temperature of 30-32℃, the stirring rate is 300-350 r / min, and the stirring time is 15-20 min; In step S4, the preset temperature of step S3 is maintained at 30-32℃, the dropping rate is 0.3-0.5mL / min, and the stirring time is continued for 20-25min after the dropping is completed; In step S5, the stirring rate is 250-300 r / min and the stirring time is 10-15 min; In step S6, the pressure for high-pressure homogenization of the mixture is 20-25 MPa, and the homogenization is performed 1-2 times.

[0038] In another aspect, the present invention provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described in any of the preceding claims in the cleaning of packaging materials.

[0039] The preferred temperature for cleaning the packaging material is 30-45℃; For cleaning the packaging materials, spray cleaning or immersion cleaning is preferred. The low-temperature, high-efficiency, and environmentally friendly cleaning agent is diluted in deionized water at a mass concentration of 20-30% and then sprayed or immersed to clean the packaging materials, achieving the dual effect of low-temperature, high-efficiency cleaning and substrate protection. Ultrasonic cleaning: The preferred cleaning temperature is 30-45℃, the preferred ultrasonic assistance time during the cleaning process is 5-10 minutes, and the preferred ultrasonic power is 100-150W; Spray cleaning: Dilute the low-temperature, high-efficiency, and environmentally friendly cleaning agent in deionized water at a mass concentration of 25-30%. The preferred spray pressure is 0.1-0.3 MPa, the cleaning temperature is 35-45℃, and the cleaning time is 8-12 minutes. Soaking and cleaning: Dilute the low-temperature, high-efficiency, and environmentally friendly cleaning agent at a mass concentration of 20-25% in deionized water. The preferred soaking temperature is 30-40℃, and the preferred soaking time is 15-20 minutes.

[0040] Example 1 Example 1 provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent, comprising the following steps: S1. 40% by mass of limonene and 30% by mass of terpineol were added to a jacketed reactor, heated to 38°C, and stirred at a rate of 250 r / min for 18 min to obtain a homogeneous compound solvent. S2. Keep the preset temperature of step S1 at 38°C, add 8% by mass of fatty alcohol polyoxyethylene ether (AEO-9) to the homogeneous compound solvent obtained in step S1, increase the stirring speed to 450 r / min and stir for 28 min until the surfactant is completely dissolved and dispersed. S3 was cooled to 31℃, and 2% by mass of diammonium citrate and 4% by mass of sodium gluconate were added sequentially and stirred for 18 min at a stirring rate of 320 r / min. The pH of the system was adjusted to 5.2 to obtain the reaction system. S4. Keep the temperature of step S3 at 31°C, mix 1% by mass of benzotriazole and 1% by mass of phytic acid evenly, and then add them dropwise to the reaction system obtained in step S3 at a dropping rate of 0.4 mL / min. After the addition is complete, continue stirring for 22 min until a corrosion-inhibiting and passivating system is formed. S5 is added with 0.5% by mass of vitamin E and 13.5% by mass of deionized water, and stirred for 12 minutes to fully mix the system and obtain a mixture, wherein the stirring speed is 280 r / min; S6. The mixture obtained in step S5 is homogenized under high pressure at a pressure of 22 MPa and for one homogenization cycle to obtain a low-temperature, high-efficiency, and environmentally friendly cleaning agent.

[0041] Example 1 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0042] Example 1 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent described above in the cleaning of packaging materials. The packaging material is ultrasonically cleaned at a cleaning temperature of 35°C, with an ultrasonic-assisted cleaning time of 8 minutes and an ultrasonic power of 120W preferred.

[0043] Example 2 Example 2 provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent as provided in Example 1, comprising the following steps: S1. Add 35% by mass of limonene and 35% by mass of terpineol to a jacketed reactor, heat to 40°C, start stirring at a rate of 300 r / min for 20 min to obtain a homogeneous compound solvent. S2. Keep the temperature of step S1 at 40°C, add 10% by mass of fatty alcohol polyoxyethylene ether (AEO-9) to the homogeneous compound solvent obtained in step S1, increase the stirring speed to 500 r / min and stir for 30 min until the surfactant is completely dissolved and dispersed. S3 was cooled to 32℃, and 3% by mass of diammonium citrate and 5% by mass of sodium gluconate were added sequentially and stirred for 20 min at a stirring speed of 350 r / min. The pH of the system was adjusted to 4.8 to obtain the reaction system. S4. Keep the temperature of step S3 at 32°C. Mix 1.5% by mass of benzotriazole and 1.2% by mass of phytic acid evenly, and then add them dropwise to the reaction system obtained in step S3 at a dropping rate of 0.5 mL / min. After the addition is complete, continue stirring for 25 min until a corrosion-inhibiting and passivating system is formed. S5 is added with 0.8% by mass of vitamin E and 8.5% by mass of deionized water, and stirred for 15 minutes to fully mix the system and obtain a mixture. The stirring speed is 300 r / min. S6 homogenizes the mixture under high pressure at a pressure of 25 MPa, and the homogenization is performed twice to obtain a low-temperature, high-efficiency, and environmentally friendly cleaning agent.

[0044] Example 2 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0045] Example 2 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent described above in the cleaning of packaging materials. The application process is the same as in Example 1.

[0046] Example 3 Example 3 provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent, comprising the following steps: S1. 45% by mass of limonene and 20% by mass of terpineol were added to a jacketed reactor, heated to 35°C, and stirred at a rate of 200 r / min for 15 min to obtain a homogeneous compound solvent. S2. Keep the temperature of step S1 at 35°C, add 5% by mass of fatty alcohol polyoxyethylene ether (AEO-9) to the homogeneous compound solvent obtained in step S1, increase the stirring speed to 400 r / min and stir for 25 min until the surfactant is completely dissolved and dispersed. S3 was cooled to 30℃, and 1% by mass of diammonium citrate and 2% by mass of sodium gluconate were added sequentially and stirred for 15 min at a stirring rate of 300 r / min. The pH of the system was adjusted to 5.8 to obtain the reaction system. S4. Keep the temperature of step S3 at 30°C. Mix 0.5% benzotriazole and 0.3% phytic acid evenly, and add them dropwise to the reaction system obtained in step S3 at a dropping rate of 0.3 mL / min. After the addition is complete, continue stirring for 20 min until a corrosion-inhibiting and passivating system is formed. S5 is added with 0.2% by mass of vitamin E and 26% by mass of deionized water, and stirred for 10 min to fully mix the system and obtain a mixture, wherein the stirring speed is 250 r / min; S6 homogenizes the mixture under high pressure at a pressure of 20 MPa for one homogenization cycle to obtain a low-temperature, high-efficiency, and environmentally friendly cleaning agent.

[0047] Example 3 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0048] Example 3 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent described above in the cleaning of packaging materials. The application process is the same as in Example 1.

[0049] Example 4 Example 4 provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent. The technical solution is the same as that in Example 1, except that 40% by mass of limonene and 30% by mass of terpineol are replaced with 35% by mass of d-limonene and 35% by mass of terpineol, 0.5% by mass of vitamin E is replaced with 1% by mass of vitamin E in step S5, and 13% by mass of deionized water is replaced with 13% by mass of deionized water.

[0050] Example 4 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0051] Example 4 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent described above in the cleaning of packaging materials. The packaging material is ultrasonically cleaned at a cleaning temperature of 35°C, with an ultrasonic-assisted cleaning time of 8 minutes and an ultrasonic power of 120W preferred.

[0052] Example 5 Example 5 provides a method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent. The technical solution is the same as that in Example 1, except that 1% by mass of benzotriazole in step S4 is replaced with 1% by mass of methylbenzotriazole.

[0053] Example 5 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0054] Example 5 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent described above in the cleaning of packaging materials. The packaging material is ultrasonically cleaned at a cleaning temperature of 35°C, with an ultrasonic-assisted cleaning time of 8 minutes and an ultrasonic power of 120W preferred.

[0055] Example 6 The technical solution of the manufacturing method of the low-temperature, high-efficiency and environmentally friendly cleaning agent provided in Example 6 is the same as that in Example 1.

[0056] Example 6 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0057] Example 6 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described above in the cleaning of packaging materials. The low-temperature, high-efficiency, and environmentally friendly cleaning agent is diluted in deionized water at a mass concentration of 28%. The packaging material is then sprayed for cleaning. The spray pressure is 0.2 MPa, the cleaning temperature is 40°C, and the cleaning time is 10 min.

[0058] Example 7 The technical solution of the manufacturing method of the low-temperature, high-efficiency, and environmentally friendly cleaning agent provided in Example 7 is the same as that in Example 1; Example 7 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0059] Example 7 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described above in the cleaning of packaging materials. The low-temperature, high-efficiency, and environmentally friendly cleaning agent is diluted in deionized water at a mass concentration of 22%, and the packaging material is immersed and cleaned at a temperature of 35°C for 18 minutes.

[0060] Example 8 The technical solution of the manufacturing method of the low-temperature, high-efficiency, and environmentally friendly cleaning agent provided in Example 8 is the same as that in Example 1; Example 8 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0061] Example 8 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent described above in the cleaning of packaging materials. The low-temperature, high-efficiency, and environmentally friendly cleaning agent is diluted in deionized water at a mass concentration of 25% and used to simulate industrial ultrasonic cyclic cleaning of the packaging materials. The cleaning temperature is 40°C, the ultrasonic power is 120W, the cleaning flow rate is 40L / min, and the ultrasonic cyclic cleaning is performed continuously for 20 days.

[0062] Comparative Example 1 The remaining technical solutions of the manufacturing method of the low-temperature high-efficiency and environmentally friendly cleaning agent provided in Comparative Example 1 are the same as those in Example 1, except that in step S3, 0.1 mol / L citric acid solution is added dropwise to adjust the pH of the system to 4.0, and in step S5, the mass percentage of deionized water is adjusted from 13.5% to 13.2%.

[0063] Comparative Example 1 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0064] Comparative Example 1 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described above in the cleaning of packaging materials, with the application process being the same as in Example 1.

[0065] Comparative Example 2 The remaining technical solutions of the manufacturing method of the low-temperature high-efficiency environmentally friendly cleaning agent provided in Comparative Example 2 are the same as those in Example 1, except that in step S3, 0.1 mol / L sodium hydroxide solution is added dropwise to adjust the pH of the system to 6.5, and in step S5, the mass percentage of deionized water is adjusted from 13.5% to 13.8%.

[0066] Comparative Example 2 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-described method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0067] Comparative Example 2 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described above in the cleaning of packaging materials, with the application process being the same as in Example 1.

[0068] Comparative Example 3 The remaining technical solutions of the manufacturing method of the low-temperature high-efficiency environmentally friendly cleaning agent provided in Comparative Example 3 are the same as those in Example 1, except that 0.5% by mass of vitamin E is not added in step S5, and the mass percentage of deionized water in step S5 is adjusted from 13.5% to 14%.

[0069] Comparative Example 3 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-mentioned method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0070] Comparative Example 3 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described above in the cleaning of packaging materials, with the application process being the same as in Example 1.

[0071] Comparative Example 4 The remaining technical solutions of the manufacturing method of the low-temperature high-efficiency environmentally friendly cleaning agent provided in Comparative Example 4 are the same as those in Example 1, except that the mass percentage of limonene and terpineol is adjusted in step S1 so that the mass ratio of limonene and terpineol is 0.9:1, and the calculated mass percentage of limonene is 33.16% and the mass percentage of terpineol is 36.84%.

[0072] Comparative Example 4 provides a low-temperature, high-efficiency, and environmentally friendly cleaning agent, which is manufactured according to the above-mentioned method for manufacturing low-temperature, high-efficiency, and environmentally friendly cleaning agents.

[0073] Comparative Example 4 provides an application of the low-temperature, high-efficiency, and environmentally friendly cleaning agent as described above in the cleaning of packaging materials, with the application process being the same as in Example 1.

[0074] Experimental methods The samples from Examples 1-8 and Comparative Examples 1-4 were measured using the following experimental methods. All tests were performed in triplicate, and the average value was taken. The error range is indicated below: 1. VOC content: According to GB 38508-2021 "Limits of Volatile Organic Compounds in Cleaning Agents", the test objects are: Examples 1-7 and Comparative Examples 1-4, which are the undiluted cleaning agents, and Example 8, which is a 25% diluted solution; REACH Regulation Annex XVII VOC limit: Aqueous cleaning agents ≤100g / L. All samples must be labeled to indicate whether they meet the limit.

[0075] 2. Biodegradation rate: Based on OECD 301B CO2 release method, test object: cleaning agent stock solution; parallel sample error ≤ ±2%, results are retained to one decimal place.

[0076] 3. Metal mass loss rate: According to IPC-TP-6502.3.23 metal corrosion test, the test substrates are copper, aluminum, and tin (common metals in packaging materials); the test conditions are: immersion in the cleaning agent solution for 72 hours at a temperature of 35℃; the test accuracy is: retained to two decimal places (0.01% level, in line with standard test accuracy).

[0077] 4. Determination of residue removal rate, including the following steps: (1) Weigh the copper substrate after pretreatment (m0), coat it with 0.5g of residue evenly, and weigh it (m1). (2) Clean according to the corresponding process → take it out and rinse it with ethanol 3 times + rinse it with deionized water 3 times → vacuum dry at 60℃ (vacuum degree -0.09MPa) for 2h → cool to room temperature and weigh (m2); (3) Set up a blank copper substrate (without residue) for synchronous cleaning, and deduct the substrate quality change (Δm substrate). Calculation formula: Residue removal rate = [(m1-m0)-(m2-m0-Δmbase)] / 0.5×100%; Error: Parallel sample error ≤ ±1.0%, results are rounded to one decimal place.

[0078] 5. Corrosion inhibition effect retention rate: Corrosion inhibition efficiency calculation formula: Corrosion inhibition efficiency = (Corrosion rate of blank substrate - Corrosion rate of sample) / Corrosion rate of blank substrate × 100%; Blank substrate: Copper / aluminum / tin substrates immersed in deionized water, tested according to IP standard conditions, blank corrosion rates: copper 0.12%, aluminum 0.15%, tin 0.18%; Cycling conditions: Example 8 was subjected to ultrasonic cycling for 20 days (cleaned once every 24 hours, residue filtered, no cleaning agent added), while the other samples were cyclicated for 30 days (under the same conditions). Test substrates: copper, aluminum, tin; Calculation formula: Corrosion inhibition effect retention rate = (Corrosion inhibition efficiency after cycle / Initial corrosion inhibition efficiency) × 100%; Error: Parallel sample error ≤ ±2%, results are rounded to integers.

[0079] 6. Aging test: Conditions: Accelerated aging at 60℃ and 85%RH for 30 days (testing substrate after cleaning); Evaluation indicators: substrate deformation, cracking, yellowing, and oxidation discoloration (measure ΔE value with a colorimeter; ΔE≤1 indicates none, 1<ΔE≤3 indicates slight, and ΔE>3 indicates significant). Error: ΔE error for parallel samples ≤ ±0.2.

[0080] 7. Usage cycle: Storage conditions: Store at 25℃ in a sealed brown glass bottle, away from light, for 6 months; Evaluation indicators: stratification, precipitation, and oxidation discoloration (same as the ΔE quantification standard for aging tests); Error: The observation results of parallel samples are consistent. The experimental data of samples from Examples 1-8 and Comparative Examples 1-4 tested using the above experimental methods are shown in Table 1 below: Table 1 Comparison of experimental data for samples from Examples 1-8 and Comparative Examples 1-4

[0081] From Table 1, we can observe that the VOC content of the cleaning solutions in Examples 1–7 is 37.8–42.1 g / L, which is far below the limit of ≤150 g / L for solvent-based cleaning agents in Annex XVII of the REACH Regulation; the VOC content of the cleaning solution (25% diluted solution, aqueous system) in Example 8 is 10.0 g / L, which is far below the limit of ≤100 g / L for aqueous cleaning agents in Annex XVII of the REACH Regulation; the biodegradability rate of Examples 1–8 is 87.6–90.2%, which meets the OECD 301B standard for readily biodegradable materials; the formulation of this application does not contain any RoHS 2.0 restricted substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers). The above results prove that this application constructs a "degradable, low-emission" green system, reducing VOC emissions by more than 60% compared to traditional solvent-based cleaning agents, and reducing treatment costs by 50% compared to traditional cleaning agents due to readily biodegradable waste. The core indicators meet the core requirements of international environmental regulations such as REACH, RoHS, and OECD. The residue removal rate of Examples 1–8 is 90.1%–95.8%. The cleaning temperature of this invention is 30–45℃, which is more than 30% lower than the traditional high temperature (60–80℃) (up to 50% lower), and does not require high temperature thermal energy drive. This proves that the cleaning agent of this application achieves a high residue removal rate of ≥90.1% at a low temperature of 30–45℃, which is 3-16% higher than the traditional cleaning agent (80–87.8%), completely subverting the traditional path of "high temperature driven cleaning". The metal mass loss rate of copper / aluminum / tin substrates in Examples 1–8 was ≤0.03% (maximum 0.03%, except for the tin substrate in Example 4); the metal mass loss rate of copper / aluminum / tin substrates in Comparative Example 1 (pH 4.0) increased to 0.04-0.05%, and the metal mass loss rate of copper / aluminum / tin substrates in Comparative Examples 2–4 was ≤0.01%; the substrates of Examples 1–8 and Comparative Examples 1, 2, and 4 were all free from deformation, yellowing, and oxidation discoloration; only Comparative Example 3 (without Vitamin E) showed slight oxidation discoloration; this proves that the cleaning solution of this application simultaneously protects the substrate during the cleaning process, with a metal mass loss rate ≤0.03% (measured ≤0.01%), and the substrates are free from deformation, yellowing, and oxidation discoloration, achieving a synergistic effect of "high-efficiency cleaning—low substrate damage"; Usage period of Examples 1–8: After 6 months of storage at 25°C, sealed, and protected from light, ΔE value / state was ≤1 / absent; Usage period of Comparative Example 3 (without Vitamin E): After 3 months of storage at 25°C, sealed, and protected from light, ΔE value / state was 2.5 / slight; after 6 months, ΔE value / state was 4.3 / significant; Usage period of Comparative Examples 1, 2, and 4: After 6 months of storage at 25°C, sealed, and protected from light, ΔE value / state was ≤1 / absent (but clearance rate decreased, but stability was not affected); In Example 8, after 20 days of ultrasonic circulation using the process, the residue removal rate was still ≥92.5%, and the corrosion inhibition effect was maintained at 95%. In Examples 1–7, after 30 days of circulation using the process, the residue removal rate was 90.1%–95.8%, and the corrosion inhibition effect was maintained at ≥90%. In Comparative Examples 1–2 (pH values ​​not within the pH range of 4.5–6.0), the residue removal rate decreased to 83.5–84.2%, the corrosion inhibition effect maintenance rate of Comparative Example 1 decreased to 82%, the residue removal rate of Comparative Example 3 (without Vitamin E) decreased to 86%, and the residue removal rate of Comparative Example 4 (solvent imbalance) decreased to 89%. This demonstrates that the cleaning solution of this application still has a removal rate of ≥90.1% and a corrosion inhibition effect maintenance rate of ≥90% after more than 20 days of circulation, and its service life is more than twice that of traditional cleaning agents, breaking through the linear consumption pattern of "one-time use, one batch wasted". Comparative Example 1 (pH=4.0, overly acidic): Residue removal rate decreased to 84.2%, metal mass loss rate increased to 0.04-0.05%, and corrosion inhibition effect retention rate decreased to 82%, verifying that the weakly acidic pH range of 4.5–6.0 is the optimal range for low-temperature, high-efficiency cleaning and low damage to the substrate; Comparative Example 2 (pH=6.5, slightly alkaline): Residue removal rate decreased to 83.5%, verifying that pH 4.5–6.0 is the optimal range for the lowest surfactant CMC and fastest micelle formation; Comparative Example 3 (without Vitamin E): 3 months of storage at 25℃, sealed, and protected from light: ΔE value / state The initial state was 2.5 / slight; after 6 months: ΔE value / state was 4.3 / significant, and the aging test (ΔE value / state) was 2.8 / slight oxidation discoloration, verifying that the natural antioxidant (vitamin E) is the core component for long-term storage stability and anti-oxidation; in the comparative example 4, limonene:terpineol = 0.9:1 (not within the compounding ratio range of 1.0-2.25:1), the residue removal rate decreased to 87.8%, and the corrosion inhibition effect retention rate decreased to 89%, verifying that the compounding ratio of bio-based olefin solvent and low VOC solvent with hydroxyl groups (1.0-2.25):1 is the optimal synergistic range.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A low-temperature, high-efficiency, and environmentally friendly cleaning agent, characterized in that, Includes the following components by mass percentage: Bio-based olefin solvent 30-45%; Low-VOC solvents containing hydroxyl groups: 20-35%; Surfactant 5-10%; A weakly acidic pH adjuster at 1-3% is used to adjust the system pH to 4.5-6.0; Natural chelating agent 2-5%; Environmentally friendly corrosion inhibitor 0.5-2%; Metal passivating agent 0.3-1.5%; Natural antioxidants 0.2-1%; Deionized water 5-26%.

2. The low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 1, characterized in that, The bio-based olefin solvent includes any one or more of limonene, d-limonene, and terpinene. The low-VOC solvent with hydroxyl groups includes any one or more of terpineol and terpineol derivatives.

3. The low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 1 or 2, characterized in that, The mass ratio of the bio-based olefin solvent to the low-VOC solvent with hydroxyl groups is (1.0-2.25):1, and the VOC content of the low-VOC solvent with hydroxyl groups is ≤50g / L.

4. The low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 1, characterized in that, The surfactant includes one or more of fatty alcohol polyoxyethylene ether AEO-9 and cocamidopropyl betaine, wherein the surfactant has an HLB value of 12-25 and a surface tension of 28-32 mN / m at room temperature.

5. The low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 1, characterized in that, The weakly acidic pH adjuster is diammonium citrate.

6. The low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 1, characterized in that, The environmentally friendly corrosion inhibitor includes one or more of benzotriazole and organic azole derivatives. The metal passivating agent is phytic acid; The mass ratio of the environmentally friendly corrosion inhibitor to the metal passivator is (1-4):

1.

7. The low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 6, characterized in that, The organic azole derivatives include any one or more of methylbenzotriazole and benzimidazole.

8. A method for manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent, characterized in that, Manufacturing a low-temperature, high-efficiency, and environmentally friendly cleaning agent as described in any one of claims 1-7 comprises the following steps: S1 adds a bio-based olefin solvent and a low-VOC solvent with hydroxyl groups to a reaction vessel in a mass ratio, heats to a preset temperature, and starts stirring to obtain a homogeneous compound solvent. S2. Maintain the preset temperature of step S1, add the surfactant to the homogeneous compound solvent obtained in step S1, increase the stirring rate and stir until the surfactant is completely dissolved and dispersed. S3 is cooled to the preset temperature, and a weak acid pH adjuster and a natural chelating agent are added sequentially while stirring. The pH value of the system is adjusted to 4.5-6.0 to obtain the reaction system. S4. While maintaining the preset temperature of step S3, mix the environmentally friendly corrosion inhibitor and the metal passivator evenly according to the mass ratio, and then add them dropwise to the reaction system obtained in step S3. After the dropwise addition is completed, continue stirring until a corrosion-inhibiting and passivating system is formed. S5 is added to natural antioxidants and deionized water, and the mixture is stirred to ensure thorough mixing. S6 homogenizes the mixture under high pressure to obtain a low-temperature, high-efficiency, and environmentally friendly cleaning agent.

9. The method for manufacturing the low-temperature, high-efficiency, and environmentally friendly cleaning agent according to claim 8, characterized in that, In step S1, the temperature is raised to the preset temperature of 35-40℃, the stirring speed is 200-300 r / min, and the stirring time is 15-20 min; In step S2, the preset temperature of step S1 is maintained at 35-40℃, the stirring speed is increased to 400-500 r / min, and the stirring time is 25-30 min; In step S3, the temperature is lowered to a preset temperature of 30-32℃, the stirring rate is 300-350 r / min, and the stirring time is 15-20 min; In step S4, the preset temperature of step S3 is maintained at 30-32℃, the dropping rate is 0.3-0.5mL / min, and the stirring time is continued for 20-25min after the dropping is completed; In step S5, the stirring rate is 250-300 r / min and the stirring time is 10-15 min; In step S6, the pressure for high-pressure homogenization of the mixture is 20-25 MPa, and the homogenization is performed 1-2 times.

10. The application of a low-temperature, high-efficiency, and environmentally friendly cleaning agent as described in any one of claims 1-7 in the cleaning of packaging materials.

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