CN111118515A - Environment-friendly universal metal cleaning agent and preparation method thereof - Google Patents
Environment-friendly universal metal cleaning agent and preparation method thereof Download PDFInfo
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- CN111118515A CN111118515A CN201811287784.5A CN201811287784A CN111118515A CN 111118515 A CN111118515 A CN 111118515A CN 201811287784 A CN201811287784 A CN 201811287784A CN 111118515 A CN111118515 A CN 111118515A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/16—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
- C23G1/18—Organic inhibitors
Abstract
The invention discloses an environment-friendly universal metal cleaning agent and a preparation method thereof, wherein the environment-friendly universal metal cleaning agent comprises the following components in percentage by weight: 226SA 5-9%, isotridecanol 13083-7%, Na4EDTA 2%, water-soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, the rest is deionized water, and the preparation method of the environment-friendly universal metal cleaning agent is characterized by comprising the following steps: preparing the raw materials according to the important percentage; dissolving metal salt Na4EDTA in hot water, and adding the solution into a 200ml beaker; stirring and adding a surfactant 226SA, isomeric tridecanol ether 1308, water-soluble benzotriazole, NEUF815 and triethanolamine, adding deionized water to 100%, and dissolving until the mixture is colorless and transparent; stirring and mixing uniformly.
Description
Technical Field
The invention relates to the field of cleaning agents, in particular to an environment-friendly universal metal cleaning agent and a preparation method thereof.
Background
In industrial production, metal powder, lubricating oil stain, acid, alkali, salt, dust, cutting fluid, grinding fluid, release agent, rolling emulsion and the like are adhered to the surface of a metal part; in order to improve the adhesion of the coating and the quality of the heat treatment, electroplating, assembly and other processes of the parts, the contaminated metal surfaces of the parts need to be subjected to degreasing and deoiling pretreatment. Large transportation equipment such as vehicles and ships are easy to stick oil stains and dust, and in order to improve the corrosion resistance and safety of equipment surface coatings and exposed connecting devices and the riding comfort, external and internal facilities of the transportation equipment of the vehicles and ships also need to be cleaned frequently.
At present, aiming at different dirt types, chemical acid cleaning (removing metal oxides), high-temperature alkali cleaning (removing animal and vegetable oil), solvent cleaning (dissolving dirt by a solvent) and water-based cleaning (taking a surfactant as a main active ingredient) are usually selected, the former cleaning agents have different defects and narrow application range, and the water-based metal cleaning agent taking the surfactant as a main body overcomes the defects of other cleaning agents; with the large application of the water-based metal cleaner, phosphorus-containing substances in the components are discharged into rivers, lakes and seas to cause eutrophic pollution of water bodies. Therefore, it is necessary to develop an environment-friendly universal metal cleaning agent which has excellent performance, good universality (universal for industrial and daily cleaning, universal for soaking, spraying and ultrasonic cleaning, universal for normal temperature and medium and low temperature), and no pollution to the environment.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a more reliable environment-friendly universal metal cleaning agent and a preparation method thereof.
The environment-friendly universal metal cleaning agent comprises the following components in percentage by weight: 226SA 5-9 wt%, isomeric tridecanol ether 13083-7 wt%, Na4EDTA 2 wt%, water soluble benzotriazole 0.1 wt%, NEUF 8150.3 wt%, triethanolamine 1 wt%, and deionized water for the rest.
Optionally, the composition comprises the following components in percentage by weight: 226SA 5%, isomeric tridecanol ether 13083%, Na4EDTA 2%, water-soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, and deionized water 88.6%.
Optionally, the composition comprises the following components in percentage by weight: 226SA 7%, isomeric tridecanol ether 13085%, Na4EDTA 2%, water-soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, and deionized water 84.6%.
Optionally, the composition comprises the following components in percentage by weight: 226SA 9%, isomeric tridecanol ether 13087%, Na4EDTA 2%, water soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, and deionized water 80.6%.
The preparation method of the environment-friendly universal metal cleaning agent comprises the following steps:
(1) preparing the raw materials according to the important percentage;
(2) dissolving metal salt Na4EDTA in hot water, and adding the solution into a 200ml beaker;
(3) stirring and adding a surfactant 226SA, isomeric tridecanol ether 1308, water-soluble benzotriazole, NEUF815 and triethanolamine, adding deionized water to 100%, and dissolving until the mixture is colorless and transparent;
(4) stirring and mixing uniformly.
The embodiment of the invention has the following beneficial effects:
the invention discloses an environment-friendly universal metal cleaning agent and a preparation method thereof, wherein the cleaning and decontamination are completed by leading the cleaning agent and water-soluble dirt (sugar, starch, organic alkali, blood, protein, inorganic salt and the like) and non-water-soluble dirt (animal and vegetable oil, fatty alcohol, mineral oil and oxides thereof, soot, dust and metal oxide) adsorbed on the surface of a substrate to be cleaned (a hard surface or various fiber fabrics) to generate a series of complex physical and chemical changes on the interface in a cleaning solution system under the action of mechanical force. The cleaning agent has good dissolving and emulsifying capabilities on water-soluble dirt and oil-soluble dirt, and has good wetting, dispersing and peptizing effects on insoluble solid dirt. The cleaning agent greatly reduces the wetting angle between a washed matrix and liquid-solid dirt and increases the spreading coefficient through the similar intermiscibility principle and the action mechanisms of curling, solubilization, emulsification, adhesion and the like in an aqueous solution, so that the dirt is quickly separated from the surface of the washed matrix, is suspended in a cleaning solution and is removed through rinsing, the cleaning process is completed, the cleaning agent follows the green and environment-friendly principle, has no corrosion to metals such as steel, aluminum, copper and the like, can meet the requirements of cleaning in the soaking, spraying and ultrasonic construction modes under the conditions of medium-low temperature and normal temperature, and can meet the general principle of industry and daily use; by comparing the performances of common surfactants at home and abroad, Berol 226SA (fatty alcohol-polyoxyethylene ether, non/cationic complex) produced by Acksonobel company is selected as a main surfactant, triethanolamine is taken as an alkaline assistant, basf isomeric tridecanol polyoxyethylene ether 1308 (Japanese chemical grade) is taken as a penetrating agent, tetrasodium ethylenediamine tetraacetate is taken as a chelating agent, water-soluble benzotriazole produced by Germany cherry company is taken as a copper corrosion inhibitor, and Nipportine company NEUF815 is taken as an aluminum corrosion inhibitor to be compounded into the environment-friendly universal metal cleaning agent.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.
1 mechanism of detergency of Metal cleaners
The cleaning and decontamination are completed by a series of complex physicochemical changes on the interface between a cleaning agent and water-soluble dirt (sugar, starch, organic alkalis, blood, protein, inorganic salt and the like) and non-water-soluble dirt (animal and vegetable oil, fatty alcohol, mineral oil and oxides thereof, soot, dust and metal oxide) adsorbed on the surface of a substrate to be cleaned (a hard surface or various fiber fabrics) in a cleaning solution system under the action of mechanical force. The cleaning agent has good dissolving and emulsifying capabilities on water-soluble dirt and oil-soluble dirt, and has good wetting, dispersing and peptizing effects on insoluble solid dirt. The cleaning agent greatly reduces the wetting angle between a cleaned substrate and liquid-solid dirt and increases the spreading coefficient through the similar intermiscibility principle and the action mechanisms of curling, solubilization, emulsification, adhesion and the like in an aqueous solution, so that the dirt is quickly separated from the surface of the cleaned substrate, suspended in a cleaning solution and removed through rinsing, and the cleaning process (2.6) is completed.
Scheme 2 design
The cleaning agent is environment-friendly, has no corrosion to metals such as steel, aluminum, copper and the like, can meet the requirements of cleaning in soaking, spraying and ultrasonic construction modes under the conditions of medium and low temperature and normal temperature, and can meet the general principle of industry and daily use; by comparing the performances of common surfactants at home and abroad, Berol 226SA (fatty alcohol-polyoxyethylene ether, non/cationic complex) produced by Acksonobel company is selected as a main surfactant, triethanolamine is taken as an alkaline assistant, basf isomeric tridecanol polyoxyethylene ether 1308 (Japanese chemical grade) is taken as a penetrating agent, tetrasodium ethylenediamine tetraacetate is taken as a chelating agent, water-soluble benzotriazole produced by Germany cherry company is taken as a copper corrosion inhibitor, and Nipportine company NEUF815 is taken as an aluminum corrosion inhibitor to be compounded into the environment-friendly universal metal cleaning agent.
2.1 starting Material
Aksunobel Berol 226SA (fatty alcohol-polyoxyethylene ether, non/cationic complex), content 99.7%, technical grade; triethanolamine (BSFF 99%), technical grade; isomeric tridecanol polyoxyethylene ether 1308(BSFF, 99%), technical grade; ethylenediaminetetraacetic acid tetrasodium salt (99%, aksonobel Dissolvine 220-S), technical grade; water-soluble benzotriazole (99%, yuunging, germany cherry), technical grade; aluminum siloxane corrosion inhibitor NEUF815 (99.5%,) technical grade; deionized water.
2.2 test apparatus
Electric heating constant temperature water bath kettle, 85-2 constant temperature magnetic stirrer, analytical balance, electric heating blast drier, constant temperature drying oven, constant temperature drying cooler spray cleaning machine ultrasonic cleaning machine
2.3 screening and determination of cleaning agent formulation
2.4 preparation of cleaning agent
The materials are weighed, firstly, the metal salt Na4EDTA is dissolved by hot water and then is added into a 200ml beaker, the surfactant 226SA, the isomeric tridecanol ether 1308, the water-soluble benzotriazole, the NEUF815 and the triethanolamine are added with stirring, the deionized water is added to 100 percent, and the materials are dissolved until the materials are colorless and transparent. Stirring and mixing uniformly.
2.5 Performance testing of cleaning Agents
2.5.1 preparation of Metal coupons
According to JB/T4323.1-1999 standard and test method, HT200 cast iron, H62 brass, duralumin LY12 and 45 steel are used as test materials with specification of 50mm × 50mm × 3mm, and are finely polished by No. 400 sand paper, washed by absolute ethyl alcohol, transferred to acetone for rinsing, dried by hot air and stored in a dryer for standby.
2.5.2 preparation of cleaning solution
Deionized water is used for preparing a cleaning solution with the concentration of 5%.
2.5.3 determination of detergency
2.5.3.1 preparation of artificial oil stain
2 parts of N32 mechanical oil, 1 part of barium petroleum sulfonate and 1 part of vaseline, and heating to about 120 ℃ to dissolve, stirring and mixing uniformly.
2.5.3.2 coating of artificial oil stain
Drying the prepared test piece in an oven at 40 +/-2 ℃ for 30min, cooling and weighing to +/-0.2 mg. The weighed test pieces were placed flat on clean filter paper. The artificial oil stain is evenly coated on the specified part of one side of the test piece, and the redundant oil stain on the two sides and the bottom edge of the test piece is wiped off by using filter paper. The oil coating is controlled to be about 0.1g (4).
Then the coated test piece is put into an oven with the temperature of 40 +/-2 ℃ for drying for 30min and then taken out, the greasy dirt on the bottom edge is wiped off by filter paper, and the test piece is cooled and weighed (4).
2.5.3.3 determination of detergency
And keeping the temperature of the test solution at 65 +/-2 ℃, soaking the coated test piece in a cleaning solution for 3min, swinging and washing for 3min, taking out the test piece, swinging and washing for 0.5min in distilled water at 65 +/-2 ℃, taking down the test piece, putting the test piece into a constant-temperature oven at 40 +/-2 ℃ for drying for 2h, cooling to room temperature, weighing, and calculating the decontamination rate (4).
2.5.3.4 calculation of detergency ratio
The detergency ratio (4) was calculated according to the formula δ M ═ M1-M2)/(M1-M0) × 100%
In the formula, delta M represents the decontamination rate,%;
m0-test piece mass, g;
m1-mass of test piece after being coated with oil stain, g;
m2-quality of oil-coated test piece after cleaning, g
2.5.3.5 high temperature stability test
And (3) putting 5ml of cleaning agent into a clean test tube, plugging the test tube, putting the test tube into a constant-temperature water bath at the temperature of 60 +/-2 ℃, taking out the test tube after the water surface is 20mm higher than the liquid surface of the test tube, and observing the appearance change (4) after the test tube is restored to the room temperature.
2.5.3.6 Low temperature stability test
Another 5ml of sample is put into a clean test tube, the test tube is plugged and then put into a refrigerator with the temperature of minus 18 +/-3 ℃ for 1h, and then the test tube is taken out and restored to the room temperature to observe the appearance change (4).
2.5.3.7 rinse performance test
Placing the beaker containing the test solution into a thermostatic water bath at 65 + -2 deg.C, and soaking the prepared test piece in the test solution for 5 min. Taking out, immediately sucking off the liquid at the lower end of the test piece by using filter paper, and drying in an oven at 40 +/-2 ℃ for 30 min. The test piece is taken out and swung back and forth for 10 times in distilled water with the temperature of 65 +/-2 ℃, and after being taken out, the test piece is dried by hot air, and the appearance (4) of the test piece is checked.
The foam performance, hard water resistance, rust resistance and corrosiveness of the cleaning machine are tested according to the JB/T4323.2-1999 water-based metal cleaning agent performance test method and standard.
Results and discussion
The main components and the amounts of the components of the RSQ-106 environment-friendly universal metal cleaner formula are selected on the basis of experience, basic principles and relevant data provided by foreign raw material manufacturers. The amount of one component was varied to examine the effect of each active on the formulation performance. Screening out a reasonable formula.
Influence of the mass percentage of each component on the decontamination rate
Effect of fatty alcohol polyoxyethylene ether 226SA dosage on performance of cleaning agent
13085% of isotridecanol polyoxyethylene ether, 2% of ethylene diamine tetraacetic acid tetrasodium salt, 0.1% of water-soluble benzotriazole, 0.3% of NEUF815 aluminum corrosion inhibitor and 1% of triethanolamine are taken as fixed parameters; the performance of the cleaning agent is analyzed by taking fatty alcohol-polyoxyethylene ether (non/cationic compound) 226SA as a variable. The trend is shown in Table 1.
TABLE 1226 influence of SA on detergent Performance
As can be seen from Table 1, the detergency ratio is in a growing trend with the increase of the dosage of the fatty alcohol-polyoxyethylene ether 226SA, but the detergency ratio is not changed greatly when the dosage is increased to 7-9%; no residue is left after rinsing; comprehensive cost consideration: when the using amount of the fatty alcohol-polyoxyethylene ether 226SA is 7%, the decontamination rate is 99.5%, and residues and stains do not exist after rinsing; the antirust property, the corrosivity, the foam property and the hard water resistance are excellent; therefore, the amount of the fatty alcohol-polyoxyethylene ether 226SA is determined to be 7%.
3.2.2 Effect of Isotridecanol polyoxyethylene ether 1308 amount on detergent Performance
226SA 7 percent of fatty alcohol-polyoxyethylene ether, 2 percent of ethylene diamine tetraacetic acid tetrasodium, 0.1 percent of water-soluble benzotriazole, 0.3 percent of NEUF815 aluminum corrosion inhibitor and 1 percent of triethanolamine are taken as fixed parameters; the performance of the cleaning agent is analyzed by taking isomeric tridecanol polyoxyethylene ether 1308 as a variable. The change trend is shown in Table 2
TABLE 2 Effect of isomeric tridecanol polyoxyethylene ether 1308 on detergent performance
As can be seen from Table 2, the detergency ratio tends to increase with the increase of the amount of the isomeric tridecanol polyoxyethylene ether 1308, but the detergency ratio does not change much when the amount is increased to 5% -7%; no residue is left after rinsing; the permeability, wettability and dust settling performance are optimal. Comprehensive cost consideration: when the using amount of the isomeric tridecanol polyoxyethylene ether 1308 is 5%, the decontamination rate is 98.5%, and residues and stains do not exist after rinsing; the permeability and the anti-smudge deposition capability are optimal; excellent antirust performance, corrosion resistance, foam performance, hard water stability and other performances. Therefore, the isomeric tridecanol polyoxyethylene ether 1308 was determined to be used in an amount of 5%.
Through the single-factor test, the optimum formula of the RSQ-106 environment-friendly universal metal cleaning agent is determined to be shown in table 3, and various performances of the metal cleaning agent are tested, so that the cleaning rate of the cleaning agent is 99.5%, the metal cleaning agent is qualified in corrosion, good in rust resistance, stable in high-temperature and low-temperature performances, and excellent in hard water resistance. The pH value is 7-8
TABLE 3 RSQ-106 Environment-friendly Universal detergent formulation
| Serial number | Name of raw materials | Adding (w%) |
| 1 | Fatty alcohol polyoxyethylene ether (non/cationic compound) 226SA | 7.0 |
| 2 | Isomeric tridecanol polyoxyethylene ether 1308 | 5.0 |
| 3 | Ethylenediaminetetraacetic acid Tetrasodium salt | 2.0 |
| 4 | Water soluble benzotriazole | 0.1 |
| 5 | NEUF815, an aluminum siloxane corrosion inhibitor | 0.3 |
| 6 | Triethanolamine | 1.0 |
3.2.3 Performance evaluation in production applications
The RSQ-106 environment-friendly universal metal cleaning agent is sent to a certain automobile accessory company and a certain rail group rail vehicle maintenance company in the northern group of the military industry of China to carry out a large-scale practical application test.
3.2.3.1 Medium-temperature high-pressure spraying cleaning gear
The gear oil stain is mainly quenching oil, cutting fluid and antirust oil.
Gear and accessory cleaning process
The workpiece passes through the assembly line to the spray chamber, is sprayed and cleaned for 2.5min, is conveyed to the rinsing chamber for rinsing for 2min, is output, and is dried by compressed air to the next process.
Spraying pressure: 0.4-0.6MPa, and circularly spraying cleaning liquid. The cleaning temperature is 50-70 ℃, and the use concentration is 3%; rinsing temperature: tap water (water hardness 186mg/L) was used for both cleaning and rinsing at 40-50 deg.C
The RSQ-106 environment-friendly universal metal cleaning agent has good cleaning effect on quenching oil, cutting fluid, antirust oil, quenching oil dirt and powder. The production field inspection: the highest value of the surface residual quantity of the workpiece is 0.15mg/L, which is far less than 1.0mg of the production standard.
The wash foam height during the life cycle was 5 ml.
And (3) rust prevention detection: the cleaned workpiece is stored for 7 days at most. The surface of the workpiece is kept bright by visual inspection on day 8, and no rust is found by observing the surface of the workpiece with a microscope.
3.2.3.2 railway vehicle outer carriage, connecting piece and pantograph accessory cleaning at normal temperature
The main pollutants outside the railway vehicle carriage are dust and oil stains, and the connecting piece and the pantograph dirt are powder and lubricating grease.
1. Railway vehicle carriage surface cleaning process
And the outside of the carriage is subjected to spray cleaning by a special vehicle cleaning machine.
Spraying pressure: 0.6-0.8Mpa, washing temperature: normal temperature, use concentration: 2-3%, pH of cleaning solution 6.5-7.5, and water for cleaning is tap water (water hardness 186mg/L)
The RSQ-106 environment-friendly universal metal cleaning agent can quickly remove dust and oil stains on the outer surface of a carriage, has small foam, is easy to rinse, has no peculiar smell, and has bright and clean cleaning surface; has no corrosion to paint film and no harm to human body.
Vehicle connecting piece and pantograph accessory cleaning process
Vehicle connecting parts and pantograph fittings are generally cleaned by soaking at normal temperature and manually scrubbing due to heavy oil stains.
Cleaning temperature: normal temperature, use concentration 10%, cleaning solution pH value: 7-8, soaking time: 30min
The RSQ-106 environment-friendly universal metal cleaning agent can remove stubborn oil dirt and lubricating grease of a connecting part and electric arc traces on an electrode part; the hand feeling is mild, the stimulation is avoided, the rinsing is easy, and the copper electrode and the aluminum part are not corroded.
3.2.3.3 cleaning interior trim of railway vehicle
The main pollutants of the interior trim of the vehicle compartment are human sweat, dust, oil stains and the like
Process for cleaning interior trim of railway vehicle carriage
Spraying the cleaning solution on the stains by using a spraying pot, and then wiping the stains by using non-woven fabrics or towels.
The cleaning temperature is normal temperature, the use concentration is 2-3%, and the pH value of the cleaning solution is as follows: 6-7
The RSQ-106 environment-friendly universal metal cleaning agent can remove stains on interior trims of carriages, has no trace after cleaning, is bright and clean, has no corrosion to interior trimmings, is mild in hand feeling, has no stimulation, and has no peculiar smell.
Conclusion
The RSQ-106 environment-friendly universal metal cleaning agent has strong decontamination capability and decontamination rate of 99.5 percent, is suitable for cleaning various metal materials, has good rust resistance on cast iron and steel parts, and has no corrosion on copper and aluminum;
the RSQ-106 environment-friendly universal metal cleaning agent has good universality, can be used in industrial production, and can also be used for daily cleaning.
The RSQ-106 environment-friendly universal metal cleaning agent is suitable for cleaning various oil stains, and has a wide cleaning range;
the RSQ-106 environment-friendly universal metal cleaning agent has the pH value close to neutral (7-8), is harmless to human bodies and is environment-friendly.
The RSQ-106 environment-friendly universal metal cleaning agent has low use ratio (2-5%), can save cost for users, and creates better economic benefit.
The RSQ-106 environment-friendly universal metal cleaning agent passes ROSH detection and meets the environment-friendly requirement; and after long-term use by users, the method has good industrial practical value.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (5)
1. An environment-friendly universal metal cleaner is characterized in that: comprises the following components in percentage by weight: 226SA 5-9 wt%, isomeric tridecanol ether 13083-7 wt%, Na4EDTA 2 wt%, water soluble benzotriazole 0.1 wt%, NEUF 8150.3 wt%, triethanolamine 1 wt%, and deionized water for the rest.
2. The environment-friendly universal metal cleaner as claimed in claim 1, which comprises the following components in percentage by weight: 226SA 5%, isomeric tridecanol ether 13083%, Na4EDTA 2%, water-soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, and deionized water 88.6%.
3. The environment-friendly universal metal cleaner as claimed in claim 1, which comprises the following components in percentage by weight: 226SA 7%, isomeric tridecanol ether 13085%, Na4EDTA 2%, water-soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, and deionized water 84.6%.
4. The environment-friendly universal metal cleaner as claimed in claim 1, which comprises the following components in percentage by weight: 226SA 9%, isomeric tridecanol ether 13087%, Na4EDTA 2%, water soluble benzotriazole 0.1%, NEUF 8150.3%, triethanolamine 1%, and deionized water 80.6%.
5. The preparation method of the environment-friendly universal metal cleaner as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
(1) preparing the raw materials according to the important percentage;
(2) dissolving metal salt Na4EDTA in hot water, and adding the solution into a 200ml beaker;
(3) stirring and adding a surfactant 226SA, isomeric tridecanol ether 1308, water-soluble benzotriazole, NEUF815 and triethanolamine, adding deionized water to 100%, and dissolving until the mixture is colorless and transparent;
(4) stirring and mixing uniformly.
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| CN201811287784.5A CN111118515A (en) | 2018-10-31 | 2018-10-31 | Environment-friendly universal metal cleaning agent and preparation method thereof |
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| CN115287128A (en) * | 2022-08-18 | 2022-11-04 | 大连格利特生物科技有限公司 | Washing machine cleaning agent for laundry dragon equipment and preparation method thereof |
| CN115595598A (en) * | 2022-10-14 | 2023-01-13 | 麦达可尔（湖北）工业有限公司（Cn） | Novel environment-friendly safe die-casting aluminum water-based cleaning agent and cleaning process thereof |
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