Water-based antirust cooling liquid and production process thereof

Abstract

The invention discloses a water-based anti-rust cooling liquid and a production process thereof, and the water-based anti-rust cooling liquid comprises the following components in parts by weight: 65-75 parts of deionized water, 10-20 parts of polyethylene glycol, 5-10 parts of propylene glycol, 3-7 parts of a modified organic anti-rust agent, 1-3 parts of an inorganic anti-rust agent, 3-5 parts of an oily lubricant, 0.5-1.5 parts of an extreme pressure lubricant, 0.1-0.3 part of a preservative, 0.5-1 part of a pH regulator and 0.05-0.15 part of an organic silicon defoamer. The invention relates to the technical field of cooling liquid production, the cooling liquid has excellent anti-rust performance, the formula of the cooling liquid contains the modified organic anti-rust agent and the inorganic anti-rust agent, the modified organic anti-rust agent forms a firm adsorption film on the metal surface through two modification reactions of oleic acid, and the anti-rust performance of the cooling liquid is improved. Oxygen and moisture are effectively prevented from being contacted with metal, and long-term anti-rust protection is provided.

Description

Technical Field

[0001] The invention relates to the technical field of coolant production, and in particular to a water-based anti-rust coolant and a production process thereof. Background Art

[0002] In the metal processing process, coolant plays a vital role. It must not only have good cooling performance to remove the heat generated by the processing and prevent the workpiece and tool from overheating and damage, but also have excellent lubrication performance to reduce the friction between the tool and the workpiece, improve the processing accuracy and surface quality, and have reliable anti-rust performance to protect the metal workpiece from rusting during processing and storage. Traditional water-based coolants often cannot take these properties into account. There are problems such as poor anti-rust effect, poor lubrication durability, low cooling efficiency, and easy breeding of microorganisms that cause the coolant to deteriorate. Therefore, the development of a water-based anti-rust coolant with excellent comprehensive performance has become an urgent need in the field of metal processing. Summary of the invention

[0003] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve the technical problems is: a water-based anti-rust coolant and a production process thereof. The water-based anti-rust coolant of the present invention comprises the following components by weight: 65-75 parts of deionized water, 10-20 parts of polyethylene glycol (PEG-400), 5-10 parts of propylene glycol, 3-7 parts of modified organic rust inhibitor, 1-3 parts of inorganic rust inhibitor, 3-5 parts of oily lubricant, 0.5-1.5 parts of extreme pressure lubricant, 0.1-0.3 parts of preservative, 0.5-1 parts of pH adjuster, 0.05-0.15 parts of silicone defoamer, 0.01-0.03 parts of lemon essence and 0.5-1 parts of adsorbent.

[0004] Deionized water, as the main component, can effectively reduce the interference of impurities in the water on the performance of the coolant, ensuring the stability and anti-rust performance of the coolant. Polyethylene glycol has good lubricity and water solubility, and can form a protective film on the metal surface, effectively reducing the friction between the tool and the workpiece, improving processing accuracy, and reducing tool wear. Propylene glycol has excellent antifreeze and stability, which can not only lower the freezing point of the coolant so that it can still be used normally in low temperature environments, but also work synergistically with other ingredients to enhance the overall performance of the coolant.

[0005] The modified organic rust inhibitor works synergistically with the inorganic rust inhibitor sodium borate to significantly improve the anti-rust effect. The borate ions dissociated from sodium borate in water can be adsorbed on the metal surface to form a protective film, enhance the anti-rust performance, and are relatively friendly to the environment. The oily lubricant polyalphaolefin has excellent low-temperature and high-temperature stability, can provide good lubrication for cutting processing in a wide temperature range, reduce tool wear, and improve the quality of the processed surface. The extreme pressure lubricant tricresol phosphate has excellent lubrication performance under extreme conditions such as high load and high temperature. It can react chemically with the metal surface to form a protective film with low shear strength, prevent direct contact between metals, and further improve lubrication performance and cutting efficiency. The preservative potassium sorbate can effectively inhibit the growth and reproduction of microorganisms, prevent the coolant from deteriorating and stinking, extend the service life of the coolant, and reduce the cost and environmental impact of frequent replacement due to coolant deterioration. The pH regulator potassium hydroxide can accurately control the pH value of the coolant, which can not only ensure the stability of the coolant, but also help the rust inhibitor and other ingredients to perform at their best. At the same time, potassium hydroxide also has a certain buffering effect, which can resist the influence of external factors on the pH value, so that the coolant maintains a relatively stable pH during use and ensures the durability of its performance. The silicone defoamer reduces foaming, lemon essence improves the odor of the coolant, and the adsorbent activated alumina absorbs odors and impurities, improving the environmental performance of the coolant and providing a relatively comfortable working environment for operators.

[0006] Wherein, the preparation method of modified organic rust inhibitor is as follows: Step A1: Add oleic acid, ethanolamine and toluene accounting for 30%-40% of the total volume of the reaction raw materials into the reactor, start stirring and heat to 120°C to allow the reaction to proceed, and distill the generated water during the reaction. When the temperature rises to 130°C, add p-toluenesulfonic acid catalyst with a mass of 1%-2% of the mass of oleic acid, continue the reflux reaction for 3-4 hours, and continuously separate the water generated by the reaction through a water separator. In this step, oleic acid reacts with ethanolamine, p-toluenesulfonic acid catalyzes the reaction to produce esters, and toluene as a solvent helps the reaction to proceed and removes the generated water, promoting the reaction to move in the forward direction.

[0007] Step A2: After the reaction is completed, the temperature is lowered to about 80°C, the reaction solution is transferred to a separatory funnel, and washed with deionized water 3-4 times to remove unreacted impurities. The organic phase is then subjected to reduced pressure distillation to obtain oleic acid ethanolamine ester. The chemical equation for the reaction is: C 18 H 34 O2+HOCH2CH2NH2→C 18 H 33 O2NCH2CH2OH+H2O; The washing process can remove unreacted impurities such as oleic acid and ethanolamine, and the reduced pressure distillation can purify oleic acid ethanolamine ester to provide pure raw materials for the next reaction.

[0008] Step A3: Add oleic acid ethanolamine ester, potassium hydroxide and anhydrous ethanol to a high-pressure reactor. After sealing the reactor, replace the air in the reactor with nitrogen for 3-4 times to exclude oxygen and prevent side reactions such as oxidation. Then raise the temperature to 100°C, start to introduce ethylene oxide gas, and control the reaction pressure at 0.2-0.3MPa. Potassium hydroxide, as a catalyst, promotes the addition reaction of ethylene oxide and oleic acid ethanolamine ester in anhydrous ethanol solvent environment.

[0009] Step A4: After the ethylene oxide is passed, the reaction is continued at 100°C-110°C for 2-3 hours to allow the reaction to proceed fully. After the reaction is completed, the reaction solution is cooled to room temperature, and the impurities are removed by filtering the reaction solution. The filtrate is then subjected to reduced pressure distillation to remove anhydrous ethanol to obtain a modified organic rust inhibitor. The reaction formula is: C 18 H 33 O2NCH2CH2OH+nC2H4O→C 18 H 33 O2N(CH2CH2O), where n represents the number of added moles of ethylene oxide; By controlling the number of added moles of ethylene oxide, the properties of the modified organic rust inhibitor, such as water solubility and rust prevention performance, can be adjusted.

[0010] After oleic acid, ethanolamine and toluene are added to the reactor and stirred, a MOFs catalyst is added in an amount of 0.5%-1.5% of the mass of the oleic acid. The MOFs catalyst has a three-dimensional network structure, a metal ion center of which is a zirconium ion Zr, an organic ligand is terephthalic acid BDC, a pore size range of 0.5-2nm, and a specific surface area of ​​not less than 1000m² / g.

[0011] In step A1, in addition to the MOFs catalyst, nano-silica particles are added as a reaction aid, and the amount added is 0.1%-0.5% of the total mass of the reaction raw materials. The particle size of the nano-silica particles is 10-50nm, and the surface is modified by a silane coupling agent, which has lipophilicity and hydrophilicity. During the reaction process, the nano-silica particles can promote the contact of the reactant molecules, improve the thermal conductivity of the reaction system, and change the distribution of the active sites of the catalyst in the addition reaction, improve the selectivity of the addition reaction, and add the nano-silica particles at the same time as the MOFs catalyst. In this way, in the initial stage of the reaction, the nano-silica particles can work together with the MOFs catalyst. The active groups such as hydroxyl groups on the surface of the nano-silica particles can interact with the active sites on the surface of oleic acid, ethanolamine and MOFs catalysts. On the one hand, it can promote the aggregation of reactant molecules around the active sites of the MOFs catalyst, increase the contact opportunity between the reactants and the catalyst, and further enhance the catalytic effect of the MOFs catalyst; on the other hand, the high thermal conductivity of the nano-silica particles themselves can help to transfer heat evenly, ensuring that the temperature distribution of the reaction system is more uniform during the heating process, which is conducive to the reaction.

[0012] The coolant formula also contains a nano additive with a self-repairing function, the addition amount is 0.5-1 part, the nano additive is a repair agent wrapped in nano capsules, the shell material of the nano capsule is polylactic acid-glycolic acid copolymer PLGA, its average particle size is 50-200nm, the wall thickness is 10-30nm, the repair agent is an organic compound containing zinc ions, when scratches appear on the surface of the metal workpiece, under the action of pressure during the processing, the nano capsule ruptures to release the repair agent, the repair agent reacts with the metal surface to form a protective film, and the self-repairing function is realized.

[0013] The production process of the above-mentioned water-based anti-rust coolant is as follows: Step S1: Add deionized water into a reaction kettle equipped with a stirring device, add polyethylene glycol and propylene glycol in sequence, and stir to mix evenly. Then add inorganic rust inhibitor, modified organic rust inhibitor, oil lubricant and extreme pressure lubricant in sequence, and continue stirring to fully mix the ingredients.

[0014] Step S2: Continue to add preservatives, pH adjusters, silicone defoamers and lemon essence to the reactor and stir to mix. At this time, it is necessary to ensure that the pH value of the mixed solution is between 8.5 and 9.5 to ensure the stability of the coolant performance. Finally, add adsorbent activated alumina and stir to mix evenly.

[0015] Step S3: filtering the mixed coolant through a filtering device to remove impurities and insoluble particles therein, and the obtained stock solution is the water-based anti-rust coolant.

[0016] In step A1, the specific monitoring method of the temperature monitoring system is as follows: Step C1: Acquire temperature data by setting a temperature acquisition module, install a temperature sensor inside the reactor body, and acquire temperature data in real time using a dynamic temperature compensation algorithm; Step C2: Temperature data is input from the temperature acquisition module to the data processing module, a temperature-air pressure coupling model is established, the internal data of the model is adjusted through feedback, the temperature change trend is analyzed, and the result data is obtained Step C3: Develop a temperature control strategy based on the result data. If the result data shows that the temperature rise exceeds the process set temperature threshold, the heating is suspended. Otherwise, the heating is continued until the temperature difference is within ±0.5°C of the set temperature threshold.

[0017] In step C1, the specific operation steps of the dynamic compensation algorithm are as follows: Step D1: Install a high-precision thermocouple sensor in the reactor, connect it to the data acquisition module with a shielded cable, and set the acquisition frequency to 2-5 times per second; Step D2: Use a reference thermometer to measure the temperature under different working conditions, establish a temperature distribution model based on heat conduction and finite element analysis, and determine the compensation coefficient; Step D3: Collect the original temperature data, check the validity of the original temperature data, use the sliding average algorithm to eliminate fluctuations, remove abnormal points of the original temperature data, and obtain filtered data; Step D4: Input the filtered data into the temperature distribution model, calculate the compensated temperature of each point according to the compensation coefficient, and calculate the average temperature according to the sensor weight as the temperature data.

[0018] In step C2, the specific steps of analyzing the temperature change trend are as follows: Step 1: Determine a short time window of 2 minutes, collect temperature data in the short time window, and calculate the data slope. A positive slope means that the temperature rises, a negative slope means that the temperature drops, and a slope close to zero means that it tends to be stable. Step 2: Expand the time range to 10 minutes and group them into 2-minute intervals, set the slope threshold, and compare the slope of each group of data. If the slope changes within ±0.3℃ and the direction is consistent, the medium-term temperature change trend direction can be determined. Otherwise, it is fed back to the temperature distribution model in step D2 for the second time to re-output the temperature data; Step 3: Divide the entire reaction stage into multiple time intervals, combine multiple mid-term temperature change trend directions, establish an overall temperature change trajectory table, and determine the long-term temperature change trend curve; Step 4: Match the temperature and air pressure data in the same time interval one by one, mark the time points of sudden temperature changes, and count the abnormal temperature fluctuation amplitudes under different air pressure changes. According to the statistical data results, establish a quantitative coefficient of the influence of air pressure on temperature. Calculate the temperature correction value through the quantitative coefficient and the actual air pressure change value, map the temperature correction value to the temperature data, and re-evaluate the temperature change trend.

[0019] The beneficial effects of the present invention are as follows: 1. Excellent anti-rust performance. The coolant formula of the present invention contains modified organic rust inhibitors and inorganic rust inhibitors. The modified organic rust inhibitor forms a firm adsorption film on the metal surface through two modification reactions of oleic acid, effectively preventing oxygen and moisture from contacting the metal, and providing long-term anti-rust protection. The inorganic rust inhibitor sodium borate can also form a protective film on the metal surface to enhance the anti-rust effect. The synergistic effect of the two can significantly extend the service life of metal workpieces and equipment, and reduce the losses and maintenance costs caused by rust.

[0020] 2. Excellent lubrication performance. Oil lubricants (poly-α-olefins) have good lubricity and water solubility, which can reduce the friction coefficient between the tool and the workpiece during metal processing, reduce wear, and improve processing accuracy and surface quality. Extreme pressure lubricants (tricresyl phosphate) have excellent lubrication performance under extreme conditions such as high load and high temperature, preventing direct contact between the tool and the workpiece, and further improving cutting efficiency and tool life.

[0021] 3. Stable pH value and good buffering performance. The pH adjuster (potassium hydroxide) controls the pH value of the coolant between 8.5 and 9.5. This range can not only ensure the stability of the coolant, but also help the rust inhibitor and other ingredients to perform at their best. At the same time, potassium hydroxide also has a certain buffering effect, which can resist the influence of external factors on the pH value, so that the coolant maintains a relatively stable pH during use, ensuring the durability of its performance.

[0022] 4. Effective anti-corrosion and antibacterial properties. The preservative (potassium sorbate) can inhibit the growth and reproduction of microorganisms, prevent the coolant from deteriorating and stinking, and extend the service life of the coolant. In water-based coolants, the growth of microorganisms will lead to performance degradation, and potassium sorbate can effectively solve this problem, ensuring that the coolant remains in good condition during long-term use, reducing the cost and environmental impact of frequent replacement due to coolant deterioration.

[0023] 5. Low odor formula, with lemon essence added, can not only cover up the odor that may be produced by some raw materials, but also provide users with a relatively comfortable working environment. At the same time, through the selection of raw materials and the optimization of processes, the generation of irritating odors is reduced, reducing the impact on the health of operators. Using activated alumina as an adsorbent further absorbs possible odors and impurities, improving the environmental performance of the coolant. The use of activated alumina helps to purify the coolant, making it more environmentally friendly and healthy during use.

[0024] 6. Good cooling performance. In the cooling performance test, the temperature of the processing part was significantly reduced after using the coolant, and the cooling performance was improved with the increase of the number of moles of ethylene oxide added n. It can effectively take away the heat in the processing process and ensure the stability of the processing process. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0026] Example 1: Oleic acid, ethanolamine, toluene, p-toluenesulfonic acid catalyst, potassium hydroxide, anhydrous ethanol, ethylene oxide, deionized water, polyethylene glycol (PEG-400), propylene glycol, sodium borate, poly-α-olefin, tricresyl phosphate, potassium sorbate, potassium hydroxide (as a pH regulator), silicone defoamer, lemon essence, and activated iron oxide sheets were prepared as metal test pieces.

[0027] Preparation of modified organic rust inhibitor: Experimental group 1, step A1: oleic acid, ethanolamine and toluene (the amount is 30% of the total volume of the reaction raw materials) were added into the reactor, stirring was started, the temperature was raised to 120°C for reaction, and the water was distilled out. When the temperature was raised to 130°C, p-toluenesulfonic acid catalyst with a mass% of oleic acid was added, and the reflux reaction was continued for 3 hours, and the water generated by the reaction was continuously separated by a water separator.

[0028] Step A2: After the reaction is completed, the temperature is lowered to about 80° C., the reaction solution is transferred to a separatory funnel, and washed with deionized water three times to remove unreacted impurities, and the organic phase is distilled under reduced pressure to obtain oleic acid ethanolamine ester.

[0029] Step A3: In a high-pressure reactor, add oleic acid ethanolamine ester, potassium hydroxide and anhydrous ethanol prepared in step A2, seal the reactor, replace the air in the reactor with nitrogen three times, raise the temperature to 100°C, start to introduce ethylene oxide gas, and control the reaction pressure at 0.2MPa. In this experiment, the number of moles of ethylene oxide added is 1.

[0030] Step A4: After the ethylene oxide is passed, the reaction is continued at 100° C. for 2 hours. After the reaction is completed, the reaction solution is cooled to room temperature, the reaction solution is filtered to remove impurities, and the filtrate is distilled under reduced pressure to remove anhydrous ethanol to obtain a modified organic rust inhibitor.

[0031] Experimental Group 2: The steps for preparing the modified organic rust inhibitor are the same as those in Experimental Group 1, but the number of moles of ethylene oxide added is controlled to be 3 in step A3.

[0032] Experimental group 3, the steps are the same as the preparation steps of the modified organic rust inhibitor in Experimental group 1, but in step A3, the number of moles of ethylene oxide added is controlled to be 5.

[0033] Preparation of water-based anti-rust coolant: Based on the modified organic rust inhibitors prepared with different ethylene oxide addition molar numbers, multiple groups of water-based rust-proof coolants were prepared respectively, and the number of each component in each group varied within a given range, as follows: Experimental group B1, step S1: add 65 parts of deionized water into a reactor equipped with a stirring device, add 10 parts of polyethylene glycol and 5 parts of propylene glycol in sequence, mix and stir, then add 1 part of sodium borate (inorganic rust inhibitor), 3 parts of modified organic rust inhibitor prepared in experimental group 1, 3 parts of poly-α-olefin (oil lubricant) and 0.5 parts of tricresol phosphate (extreme pressure lubricant) in sequence, and stir and mix.

[0034] Step S2: Continue to add 0.1 parts of potassium sorbate (preservative), 0.5 parts of potassium hydroxide (pH adjuster), 0.05 parts of silicone defoamer and 0.01 parts of lemon essence into the reactor, stir and mix, and finally add 0.5 parts of activated alumina (adsorbent) and stir and mix. At this time, the pH value of the mixed solution is 8.5.

[0035] Experimental group B2, step S1: 70 parts of deionized water were added to a reactor equipped with a stirring device, 15 parts of polyethylene glycol and 7 parts of propylene glycol were added in sequence and mixed and stirred, and then 2 parts of sodium borate (inorganic rust inhibitor), 5 parts of the modified organic rust inhibitor prepared in experimental group 2, 4 parts of poly-α-olefin (oil lubricant) and 1 part of tricresyl phosphate (extreme pressure lubricant) were added in sequence and stirred and mixed.

[0036] Step S2: Continue to add 0.2 parts of potassium sorbate (preservative), 0.7 parts of potassium hydroxide (pH adjuster), 0.1 parts of silicone defoamer and 0.02 parts of lemon essence into the reactor, stir and mix, and finally add 0.7 parts of activated alumina (adsorbent) and stir and mix. At this time, the pH value of the mixed solution is 9.

[0037] Experimental group B3, step S1: 75 parts of deionized water were added to a reactor equipped with a stirring device, 20 parts of polyethylene glycol and 10 parts of propylene glycol were added in sequence and mixed, and then 3 parts of sodium borate (inorganic rust inhibitor), 7 parts of the modified organic rust inhibitor prepared in experimental group 3, 5 parts of poly-α-olefin (oil lubricant) and 1.5 parts of tricresyl phosphate (extreme pressure lubricant) were added in sequence and mixed.

[0038] Step S2: Continue to add 0.3 parts of potassium sorbate (preservative), 1 part of potassium hydroxide (pH adjuster), 0.15 parts of silicone defoamer and 0.03 parts of lemon essence into the reactor, stir and mix, and finally add 1 part of activated alumina (adsorbent) and stir and mix. At this time, the pH value of the mixed solution is 9.5.

[0039] Control group 1: no modified organic rust inhibitor was added to control group 1, and the other components were used in the same amounts as in the preparation steps of the water-based rust-proof coolant in experimental group B1.

[0040] Using the salt spray test method, the iron sheets coated with the coolant of each experimental group were placed in a salt spray test chamber, and the test conditions were set to 35°C, 95% relative humidity, 5% sodium chloride solution concentration, and continuous spraying for 48 hours. The rust on the surface of the test piece was observed, and the number of rust spots and rust area were recorded.

[0041] With the increase of the number of moles of ethylene oxide added, the anti-rust performance of the water-based anti-rust coolant is significantly improved. Under the given experimental conditions, the anti-rust performance is best when the number of moles of ethylene oxide added is 5. Compared with the control group 1 without adding modified organic rust inhibitor, the anti-rust effect is significantly improved after adding modified organic rust inhibitor, which proves that modified organic rust inhibitor plays an important role in anti-rust performance, refer to Table 1.

[0042] Table 1 Test results of the effect of ethylene oxide addition mole number on the anti-rust performance of water-based anti-rust coolant

[0043] Example 2: The experimental materials were prepared in the same manner as in Example 1.

[0044] Preparation of modified organic rust inhibitor: The modified organic rust inhibitor preparation steps in Example 1 were used to prepare modified organic rust inhibitors with different numbers of ethylene oxide addition moles.

[0045] Preparation of water-based anti-rust coolant: The same steps for preparing the water-based rust-proof coolant as in Example 1 were followed, and multiple groups of water-based rust-proof coolants were prepared based on modified organic rust inhibitors with different numbers of ethylene oxide addition moles, and the number of each component in each group varied within a given range.

[0046] Control group 2: Deionized water was used instead of the coolant in control group 2, that is, no other components were added except water.

[0047] Using a simulated cutting device, the initial temperature of the tool and workpiece during the cutting process and the temperature after 10 minutes of machining are measured, and the temperature rise value is calculated to evaluate the cooling performance of the coolant.

[0048] As the number of ethylene oxide addition moles increases, the cooling performance of the water-based anti-rust coolant gradually increases. When the number of ethylene oxide addition moles is 5, the cooling effect is optimal, and the temperature rise during cutting can be effectively controlled. Compared with the control group 2 using only deionized water, the water-based anti-rust coolant with added components has significant advantages in cooling performance, indicating that the components in the coolant work together and play a positive role in cooling performance, see Table 2.

[0049] Table 2: Test results of the effect of ethylene oxide addition mole number on the cooling performance of water-based anti-rust coolant

[0050] Based on the results of Example 1 and Example 2, it can be seen that when the molar number of ethylene oxide addition is 5, the parts of each component are 75 parts of deionized water, 20 parts of polyethylene glycol, 10 parts of propylene glycol, 7 parts of modified organic rust inhibitor, 3 parts of inorganic rust inhibitor, 5 parts of oily lubricant, 1.5 parts of extreme pressure lubricant, 0.3 parts of preservative, 1 part of pH adjuster, 0.15 parts of silicone defoamer, 0.03 parts of lemon essence, and 1 part of adsorbent, the water-based anti-rust coolant has the best comprehensive performance in anti-rust and cooling performance.

[0051] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A water-based anti-rust coolant, characterized in that: The invention comprises the following components by weight: 65-75 parts of deionized water, 10-20 parts of polyethylene glycol, 5-10 parts of propylene glycol, 3-7 parts of modified organic rust inhibitor, 1-3 parts of inorganic rust inhibitor, 3-5 parts of oily lubricant, 0.5-1.5 parts of extreme pressure lubricant, 0.1-0.3 parts of preservative, 0.5-1 parts of pH regulator, 0.05-0.15 parts of organosilicon defoamer, 0.01-0.03 parts of lemon essence and 0.5-1 parts of adsorbent; Wherein, the specific preparation method of the modified organic rust inhibitor is as follows: Step A1: add oleic acid, ethanolamine and toluene into a reaction kettle, start stirring, increase the temperature to distill out water under the monitoring of a temperature monitoring system, add p-toluenesulfonic acid catalyst, continue reflux reaction for 3-4 hours, and continuously separate the water generated by the reaction through a water separator; Step A2: After the reaction is completed, the temperature is lowered to 80° C., the reaction solution is transferred to a separatory funnel, washed with deionized water for 3-4 times, and the organic phase is distilled under reduced pressure to obtain oleic acid ethanolamine ester; Step A3: Add the oleic acid ethanolamine ester prepared in step A2, potassium hydroxide and anhydrous ethanol into a high-pressure reactor, seal the reactor, replace the air in the reactor with nitrogen for 3-4 times, heat it to 100° C., start to introduce ethylene oxide gas, and control the reaction pressure at 0.2-0.3 MPa; Step A4: After the ethylene oxide is passed, the reaction is continued at 100°C-110°C for 2-3 hours. After the reaction is completed, the reaction solution is cooled to room temperature, the reaction solution is filtered to remove impurities, and the filtrate is distilled under reduced pressure to remove anhydrous ethanol to obtain a modified organic rust inhibitor.

2. A water-based anti-rust coolant according to claim 1, characterized in that: The amount of toluenesulfonic acid in step A1 is 1%-2% of the mass of oleic acid, the amount of toluene is 30%-40% of the total volume of the reaction raw materials, the inorganic rust inhibitor is sodium borate, the pH adjuster is potassium hydroxide, the oily lubricant is poly-α-olefin, the extreme pressure lubricant is tricresyl phosphate, the preservative is potassium sorbate, and the adsorbent is activated alumina.

3. A water-based anti-rust coolant according to claim 1, characterized in that: After oleic acid, ethanolamine and toluene are added to the reactor and stirred, a MOFs catalyst is added in an amount of 0.5%-1.5% of the mass of the oleic acid. The MOFs catalyst has a three-dimensional network structure, a metal ion center of which is a zirconium ion Zr, an organic ligand is terephthalic acid BDC, a pore size range of 0.5-2nm, and a specific surface area of ​​not less than 1000m² / g.

4. The water-based anti-rust coolant according to claim 1, characterized in that: In step A1, in addition to the MOFs catalyst, nano-silica particles are added as a reaction aid in an amount of 0.1%-0.5% of the total mass of the reaction raw materials. The nano-silica particles have a particle size of 10-50 nm and are surface-modified with a silane coupling agent.

5. The water-based anti-rust coolant according to claim 1, characterized in that: The coolant formula also contains a nano additive, the addition amount is 0.5-1 part, the nano additive is a repair agent wrapped in nano capsules, the shell material of the nano capsule is polylactic acid-glycolic acid copolymer PLGA, the average particle size is 50-200nm, the wall thickness is 10-30nm, and the repair agent is an organic compound containing zinc ions.

6. A production process of a water-based anti-rust coolant, characterized in that: The following steps are involved: Step S1: deionized water is added to a reaction kettle equipped with a stirring device, polyethylene glycol and propylene glycol are added in sequence, mixed and stirred, and then an inorganic rust inhibitor, a modified organic rust inhibitor, an oily lubricant and an extreme pressure lubricant are added in sequence, and stirred and mixed; Step S2: Continue to add preservatives, pH adjusters, silicone defoamers and lemon essence into the reaction kettle, stir and mix, and finally add activated alumina and stir and mix; Step S3: filtering the mixed coolant through a filtering device, and the remaining stock solution is a water-based anti-rust coolant.

7. The production process of a water-based anti-rust coolant according to claim 6, characterized in that: The pH value of the mixed solution in step S2 is 8.5-9.

5.

8. The water-based anti-rust coolant according to claim 1, characterized in that: In step A1, the specific monitoring method of the temperature monitoring system is as follows: Step C1: Acquire temperature data by setting a temperature acquisition module, install a temperature sensor inside the reactor body, and acquire temperature data in real time using a dynamic temperature compensation algorithm; Step C2: Temperature data is input from the temperature acquisition module to the data processing module, a temperature-air pressure coupling model is established, the internal data of the model is adjusted through feedback, the temperature change trend is analyzed, and the result data is obtained Step C3: Develop a temperature control strategy based on the result data. If the result data shows that the temperature rise exceeds the process set temperature threshold, the heating is suspended. Otherwise, the heating is continued until the temperature difference is within ±0.5°C of the set temperature threshold.

9. A water-based anti-rust coolant according to claim 8, characterized in that: In step C1, the specific operation steps of the dynamic compensation algorithm are as follows: Step D1: Install a high-precision thermocouple sensor in the reactor, connect it to the data acquisition module with a shielded cable, and set the acquisition frequency to 2-5 times per second; Step D2: Use a reference thermometer to measure the temperature under different working conditions, establish a temperature distribution model based on heat conduction and finite element analysis, and determine the compensation coefficient; Step D3: Collect the original temperature data, check the validity of the original temperature data, use the sliding average algorithm to eliminate fluctuations, remove abnormal points of the original temperature data, and obtain filtered data; Step D4: Input the filtered data into the temperature distribution model, calculate the compensated temperature of each point according to the compensation coefficient, and calculate the average temperature according to the sensor weight as the temperature data.

10. A water-based anti-rust coolant according to claim 9, characterized in that: In step C2, the specific steps of analyzing the temperature change trend are as follows: Step 1: Determine a short time window of 2 minutes, collect temperature data in the short time window, and calculate the data slope; Step 2: Expand the time range to 10 minutes and group them into 2-minute intervals, set the slope threshold, and compare the slope of each group of data. If the slope changes within ±0.3℃ and the direction is consistent, the medium-term temperature change trend direction can be determined. Otherwise, it is fed back to the temperature distribution model in step D2 for the second time to re-output the temperature data; Step 3: Divide the entire reaction stage into multiple time intervals, combine multiple mid-term temperature change trend directions, establish an overall temperature change trajectory table, and determine the long-term temperature change trend curve; Step 4: Match the temperature and air pressure data in the same time interval one by one, mark the time points of sudden temperature changes, and count the abnormal temperature fluctuation amplitudes under different air pressure changes. According to the statistical data results, establish a quantitative coefficient of the influence of air pressure on temperature. Calculate the temperature correction value through the quantitative coefficient and the actual air pressure change value, map the temperature correction value to the temperature data, and re-evaluate the temperature change trend.

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