Environment-friendly cleaning agent as well as preparation method and application thereof

Abstract

The invention provides an environment-friendly cleaning agent. The cleaning agent is prepared from the following components in percentage by weight: 1520% of modified alkyl glycoside, 812% of trisodium citrate, 35% of nano silicon dioxide, 24% of polyether modified siloxane, 12% of matrine extract, 0.08 0.12% of EDTA (Ethylene Diamine Tetraacetic Acid) disodium, 0.81.2% of lipase, 0.30.5% of protease, 0.30.5% of trehalose and the balance of deionized water. The cleaning agent provided by the invention has three decontamination mechanisms of chemical decomposition, physical adsorption and biological enzymolysis, can well clean the equipment transmission chain, and has good antirust function and environmental protection performance.

Description

Technical Field

[0001] This invention belongs to the field of lubricating cleaning agent preparation technology, specifically relating to an environmentally friendly cleaning agent, its preparation method, and its application. Background Technology

[0002] As a core component of the transmission system, the chain is constantly exposed to complex environments (mud, oil, rainwater, etc.) and requires regular cleaning to reduce wear. Traditional mechanical cleaning is inefficient, manual brushing is time-consuming and struggles to thoroughly remove stubborn stains from chain crevices, and ultrasonic cleaning equipment is expensive. Early cleaning agents were mostly petroleum-based solvents, using kerosene, diesel, etc. While these had strong cleaning power, they also posed problems such as flammability, high VOC emissions, and poor biodegradability. Although some existing cleaning agents have improved environmental friendliness or incorporated combinations of ingredients such as enzymes, alkyl glycosides, siloxanes, and silica, they lack a targeted rust-preventive protection system, provide insufficient passivation protection for the chain's metal surface, and exhibit poor synergy between cleaning and rust prevention, making it difficult to simultaneously meet the needs of efficient cleaning and long-term rust protection.

[0003] Traditional chain cleaners (such as kerosene, diesel, and dishwashing liquid) have the following drawbacks: 1. High corrosiveness: They damage the internal lubricating grease and electroplating layer of the chain, leading to a shortened chain life. 2. Environmental pollution: They contain phosphorus and benzene compounds that are difficult to degrade, failing to meet EU REACH environmental standards. 3. Operational risks: Volatile organic compounds (VOCs) can easily cause respiratory irritation. 4. Residue issues: A second wiping is required after cleaning; otherwise, dust will be absorbed, accelerating wear. 5. Limited stain removal: They lack bio-enzymatic hydrolysis, resulting in low efficiency in decomposing triglyceride oil stains and protein stains, leading to incomplete cleaning. 6. Insufficient protection: Existing formulas containing alkyl glycosides, bio-enzymes, siloxanes, or silica do not establish a targeted metal passivation protection system, making it easy for chains to rust after cleaning, failing to achieve synergistic optimization of cleaning and rust prevention.

[0004] Therefore, there is an urgent need to provide a cleaning agent with a high oil removal rate and environmental friendliness, while also having rust prevention function. Summary of the Invention

[0005] In view of this, the present invention provides a special cleaning agent for transmission chains that has rust prevention, penetrating cleaning and biodegradation functions, and incorporates biological enzyme components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An environmentally friendly cleaning agent, said cleaning agent being prepared from the following components by weight percentage: 15% modified alkyl glycoside 20%, trisodium citrate 8 12%, nano-silica 3 5%, polyether-modified siloxane 2 4%, matrine extract 1 2%, Disodium EDTA 0.08 0.12%, lipase 0.8 1.2%, protease 0.3%. 0.5%, trehalose 0.3% 0.5%, the remainder is deionized water.

[0007] In some specific embodiments, preferably, the cleaning agent is prepared from the following components by weight percentage: 20% modified alkyl glycoside, 12% trisodium citrate, 5% nano silica, 4% polyether-modified siloxane, 2% matrine extract, 1.2% lipase, 0.5% protease, 0.5% trehalose, and the balance being deionized water.

[0008] Furthermore, the lipase is heat-resistant to 40°C. 60℃, pH tolerance range 5.5 7.0, enzyme activity ≥8000U / mL.

[0009] Furthermore, the protease is an alkaline protease with an enzyme activity ≥100,000 U / g.

[0010] Furthermore, the modified alkyl glycosides include octyl glucoside and lauryl glucoside.

[0011] Furthermore, the modified polyether-modified siloxane includes polyether-modified trisiloxane.

[0012] A method for preparing the above-mentioned cleaning agent, the method comprising the following steps: S1. First, the modified alkyl glycoside is vacuum dehydrated, then the polyether-modified siloxane is preheated, and finally the mixture is sheared and emulsified to obtain mixture I. S2. Add silica to mixture I for dispersion. After dispersion, add disodium EDTA and trisodium citrate in batches, controlling the pH of the system to 5.5-6.0 and the temperature to 55°C. At 65℃, matrine extract was added, and the mixture was stirred and dispersed to obtain mixture II; S3. Add lipase, protease and trehalose to mixture II, stir and disperse evenly, then stir at low speed and let stand, and finally filter with ceramic membrane to obtain cleaning agent.

[0013] In some specific embodiments, preferably, the moisture content of the modified alkyl glycoside after vacuum dehydration in step S1 is ≤0.5%; The preheating temperature for polyether-modified siloxane is 45±2℃; Shear emulsification employed a three-stage gradient emulsification process, sequentially shearing at 600, 1200, and 1800 r / min for 3 minutes each, while maintaining a constant temperature and controlling the viscosity throughout the process. .

[0014] In some specific embodiments, preferably, the silica dispersion in step S2 is performed using pulsed ultrasonic mode with a working time of 5 seconds and an interval of 2 seconds; wherein the frequency is 40 kHz, the total processing time is 30 minutes, and the temperature is ≤40℃. Add trisodium citrate to each batch at 10-minute intervals, for a total of 3 additions. Dispersion conditions: at 25 Stir at 35 r / min for 10 minutes 15 minutes.

[0015] In some specific embodiments, preferably, the stirring and dispersion conditions in step S3 are: rotation speed 25. 35 r / min, time 25 35min; Low-speed stirring conditions: speed 3 7 r / min, time 10 14 hours; Settling time: 10 minutes 14 hours; The ceramic membrane has a pore size of 0.22 μm.

[0016] The above-mentioned cleaning agents are used in the drive chains of cleaning equipment.

[0017] The core active ingredient in the matrine extract of this application is a quinolone alkaloid, and its mechanism of action is as follows: Passivation protection: The nitrogen and oxygen atoms in the molecular structure of quinolone alkaloids have a strong coordination ability and can undergo a complexation reaction with iron ions on the surface of the chain metal to form a dense passivation film with a thickness of 5-10nm, which blocks the contact between the metal and oxygen and moisture, and inhibits the occurrence of rust from the source. Synergistic stabilization: It forms a synergistic effect with the chelation of trisodium citrate. The alkaloid can be adsorbed on the active sites of the metal surface, promoting the chelation of metal ions by trisodium citrate and further enhancing the anti-rust effect. Excellent compatibility: It has no antagonistic reaction with components such as biological enzymes, APG, and polyether-modified siloxanes, and does not affect enzyme activity or the stability of emulsion and adsorption systems. At the same time, it is biodegradable and does not increase the environmental burden.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This method has a triple decontamination mechanism, as follows: Chemical emulsification: APG breaks down oil stains into droplets <50nm (traditional cleaning agents >200nm).

[0019] Physical adsorption: Nano-silica captures suspended particles through van der Waals forces, avoiding secondary deposition.

[0020] Bio-enzymatic hydrolysis: Lipase specifically breaks down triglyceride-based oil stains, while protease breaks down protein-based sweat residues, forming a synergistic effect of "emulsification + adsorption + enzymatic hydrolysis," increasing the cleaning rate to over 98%.

[0021] (2) Enhanced rust protection technology: Matrine extract forms a dense passivation film by complexing with iron ions, and combined with the chelating effect of trisodium citrate, it achieves dual rust prevention of "passivation + chelation". The chain remains rust-free for up to 120 hours, which is significantly better than existing similar formulas. Trehalose can effectively protect enzyme activity, ensuring enzyme stability during the storage and use of the finished product, while not affecting the formation of the passivation film.

[0022] (3) Environmentally friendly design: Validated by OECD 301D standard, the biodegradability rate reaches 95% in 28 days (compared to only 35% for traditional solvent-based products); VOC content ≤50g / L, meeting the low volatility requirements of GB / T38597-2020; the bio-enzyme itself can completely degrade it, further reducing the environmental burden. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments, so that those skilled in the art can more clearly understand the present invention. Unless otherwise specified, the technical means used in the following embodiments are all conventional means well known to those skilled in the art, and all reagents and consumables are commercially available products.

[0024] Example 1 This embodiment provides an environmentally friendly cleaning agent and its preparation method, as detailed below: The cleaning agent formula contains the following components by percentage by weight: octyl glucoside (APG 0810) 15%; trisodium citrate 8%; nano silica 3%; polyether-modified trisiloxane 2%; matrine extract 1%; lipase 0.8%; protease 0.3%; trehalose 0.3%; and the balance is deionized water.

[0025] Preparation process: (1) Premixing stage Raw material pretreatment: APG is vacuum dehydrated (moisture content ≤0.5%), and polyether-modified siloxane needs to be preheated to 45±2℃ to reduce viscosity.

[0026] Shear emulsification: Mix the pretreated raw materials and emulsify using a three-stage gradient (600, 1200, and 1800 r / min for 3 minutes each). The emulsification tank should be equipped with a cooling jacket to maintain a stable temperature.

[0027] Quality control: The viscosity of the system is monitored by an online viscometer, and the target value is controlled within the range of 1500-2000 mPa·s.

[0028] (2) Dispersion stage Nano-silica was added to the mixture obtained in the previous step, and pulsed ultrasonic mode was used (5s working / 2s interval) with ice bath temperature control (≤40℃) to prevent local overheating and agglomeration. The treatment was carried out at a frequency of 40kHz for a total of 30 minutes.

[0029] (3) Chelation reaction First, add 0.1% disodium EDTA as a chelation promoter to the mixture obtained in the previous step, and then add trisodium citrate in three separate additions at 10-minute intervals. During this period, the pH is monitored online (maintained at 5.5-6.0), the chelation reaction is tracked using a redox potentiometer, and the temperature is controlled at 60℃.

[0030] (4) Addition and mixing of biological enzymes: Add lipase, protease and trehalose to the mixture obtained in the previous step, and stir at 30 r / min for 30 minutes to mix evenly.

[0031] (5) Post-processing The mixture obtained in the previous step was stirred at a low speed of 5 r / min for the first 12 hours, and then allowed to stand for the next 12 hours to allow the nanomaterials to fully adsorb the active ingredients. Finally, a 0.22 μm ceramic membrane was used to remove the undispersed particles, thus obtaining the cleaning agent.

[0032] Example 2 This embodiment provides an environmentally friendly cleaning agent and its preparation method. The preparation method is the same as that in Example 1, except that the specific formula is different. The specific formula of the cleaning agent in this embodiment is as follows: lauryl glucoside (APG 1214) 20%; trisodium citrate 12%; nano silica 5%; polyether-modified trisiloxane 4%; matrine extract 2%; lipase 1.2%; protease 0.5%; trehalose 0.5%; the balance is deionized water.

[0033] Example 3 This embodiment provides an environmentally friendly cleaning agent and its preparation method. The preparation method is the same as that in Example 1, except that the specific formula is different. The specific formula of the cleaning agent in this embodiment is as follows: 18% octyl glucoside (APG 0810); 10% trisodium citrate; 4% nano silica; 3% polyether-modified trisiloxane; 1.5% matrine extract; 1.0% lipase; 0.4% protease; 0.4% trehalose; and the balance is deionized water.

[0034] Comparative Example 1 This comparative example provides a cleaning agent, the preparation method of which is the same as that of Example 1, except that the specific formula is different: the formula does not contain biological enzymes (lipase, protease), and all other aspects remain the same.

[0035] Comparative Example 2 This comparative example provides a cleaning agent, the preparation method of which is the same as that of Example 1, except that the specific formula is different: the formula does not contain matrine extract, but all other aspects remain the same.

[0036] Comparative Example 3 This comparative example provides a cleaning agent, whose preparation method is the same as that of Example 1, except that the specific formulation is different: the matrine extract in the formulation is replaced by an equal amount of the conventional rust inhibitor benzotriazole, while the rest remain unchanged.

[0037] Comparative Example 4 This comparative example provides a cleaning agent, the preparation method of which is the same as that of Example 1, except that the specific formula is different: the content of matrine extract in the formula is changed to 0.3%, while the rest remain unchanged.

[0038] Furthermore, to understand the final cleaning effect of the above embodiments and comparative examples, bicycle chains were selected for cleaning. The cleaning process is as follows: bicycle chains that have been used for 100 hours were selected, loose mud and sand were removed from the surface, and the surface dust was wiped off with anhydrous ethanol and dried. The chains were then immersed in the cleaning agent at a ratio of "chain mass: cleaning agent = 1:50" and cleaned using pulsed ultrasonic cleaning (300W, 40kHz, 50℃, 15min). After cleaning, the chains were rinsed with deionized water for 30s and allowed to air dry naturally at 25℃ and 60% humidity. Relevant indicators were then tested.

[0039] The specific results are shown in Table 1.

[0040] Table 1. Final cleaning results of each embodiment and comparative example.

[0041] As shown in Table 1, the cleaning solution provided by this method possesses excellent performance (high cleaning efficiency, low corrosion, long-term rust prevention, low VOC content, high biodegradability, rapid drying, and good lubrication). Its technical effect is significantly better than Comparative Example 2 (which does not contain matrine), Comparative Example 3 (which uses a substitute rust inhibitor), and Comparative Example 4 (which has a low content of matrine). Among them, Comparative Example 3 uses the conventional rust inhibitor benzotriazole. Although its rust prevention performance is better than Comparative Example 2, its biodegradability is significantly reduced (only 82.3%), resulting in insufficient environmental friendliness.

[0042] Unless otherwise specified, all raw materials used in this invention are existing substances that can be purchased directly from the market.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An environmentally friendly cleaning agent, characterized in that, The cleaning agent is prepared from the following components by weight percentage: modified alkyl glycoside 15 20%, trisodium citrate 8 12%, nano-silica 3 5%, polyether-modified siloxane 2 4%, matrine extract 1 2%, Disodium EDTA 0.08 0.12%, lipase 0.8 1.2%, protease 0.3%. 0.5%, trehalose 0.3% 0.5%, the remainder is deionized water.

2. The cleaning agent according to claim 1, characterized in that, The lipase is heat-resistant to 40°C. 60℃, pH tolerance range 5.5 7.0, enzyme activity ≥8000U / mL.

3. The cleaning agent according to claim 1, characterized in that, The protease is an alkaline protease with an enzyme activity ≥100,000 U / g.

4. The cleaning agent according to claim 1, characterized in that, The modified alkyl glycosides include octyl glucoside and lauryl glucoside.

5. The cleaning agent according to claim 1, characterized in that, The modified polyether-modified siloxane includes polyether-modified trisiloxane.

6. A method for preparing the cleaning agent according to any one of claims 1-5, characterized in that, The method includes the following steps: S1. First, the modified alkyl glycoside is vacuum dehydrated, then the polyether-modified siloxane is preheated, and finally the mixture is sheared and emulsified to obtain mixture I. S2. Add silica to mixture I for dispersion. After dispersion, add disodium EDTA and trisodium citrate in batches, controlling the pH of the system to 5.5-6.0 and the temperature to 55°C. At 65℃, matrine extract was added, and the mixture was stirred and dispersed to obtain mixture II; S3. Add lipase, protease and trehalose to mixture II, stir and disperse evenly, then stir at low speed and let stand, and finally filter with ceramic membrane to obtain cleaning agent.

7. The method according to claim 6, characterized in that, The moisture content of the modified alkyl glycoside after vacuum dehydration in step S1 is ≤0.5%; The preheating temperature for polyether-modified siloxane is 45±2℃; Shear emulsification employed a three-stage gradient emulsification process, sequentially shearing at 600, 1200, and 1800 r / min for 3 minutes each, while maintaining a constant temperature and controlling the viscosity throughout the process. .

8. The method according to claim 6, characterized in that, In step S2, silica dispersion is performed using pulsed ultrasonic mode with a working time of 5 seconds and an interval of 2 seconds; the frequency is 40 kHz, the total treatment time is 30 minutes, and the temperature is ≤40℃. Add trisodium citrate to each batch at 10-minute intervals, for a total of 3 additions. Dispersion conditions: at 25 Stir at 35 r / min for 10 minutes 15 minutes.

9. The method according to claim 6, characterized in that, Stirring and dispersion conditions in step S3: rotation speed 25 35 r / min, time 25 35min; Low-speed stirring conditions: speed 3 7 r / min, time 10 14 hours; Settling time: 10 minutes 14 hours; The ceramic membrane has a pore size of 0.22 μm.

10. The use of the cleaning agent according to any one of claims 1-5 in the drive chain of a cleaning equipment.

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