CN117737743A - Efficient low-foam antirust ferrous metal water-based cleaning agent and preparation method thereof - Google Patents
Efficient low-foam antirust ferrous metal water-based cleaning agent and preparation method thereof Download PDFInfo
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- CN117737743A CN117737743A CN202311851291.0A CN202311851291A CN117737743A CN 117737743 A CN117737743 A CN 117737743A CN 202311851291 A CN202311851291 A CN 202311851291A CN 117737743 A CN117737743 A CN 117737743A
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- 238000002360 preparation method Methods 0.000 title abstract description 9
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- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
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- 239000012972 dimethylethanolamine Substances 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
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- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
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- 159000000000 sodium salts Chemical class 0.000 claims description 3
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 claims description 3
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- IFPMZBBHBZQTOV-UHFFFAOYSA-N 1,3,5-trinitro-2-(2,4,6-trinitrophenyl)-4-[2,4,6-trinitro-3-(2,4,6-trinitrophenyl)phenyl]benzene Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C(C=2C(=C(C=3C(=CC(=CC=3[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)C(=CC=2[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)=C1[N+]([O-])=O IFPMZBBHBZQTOV-UHFFFAOYSA-N 0.000 description 2
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Landscapes
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The application relates to the technical field of metal cleaning agents, and mainly relates to a high-efficiency low-foam rust-proof type ferrous metal water-based cleaning agent and a preparation method thereof. The high-efficiency low-foam antirust ferrous metal water-based cleaning agent comprises the following components in percentage by mass: 10-25% of organic base, 6-12% of antirust agent, 2-5% of dispersing agent, 1-3% of penetrating agent, 2-6% of chelating agent and the balance of deionized water. The application adopts water, organic alkali, antirust agent and dispersant to compound without adopting nonionic surfactant, defoamer and other components, so as to obtain the high-efficiency, low-foam and antirust ferrous metal water-based cleaning agent. The ferrous metal water-based cleaning agent has good stability, cleaning performance and defoaming performance, can effectively remove oil stains and solid particles remained on the surface of metal, has good cleaning effect at normal temperature, can provide rust protection for the metal, and does not need to additionally add a defoaming agent to influence the stability of the system.
Description
Technical Field
The application relates to the technical field of metal cleaning agents, and mainly relates to a high-efficiency low-foam rust-proof type ferrous metal water-based cleaning agent and a preparation method thereof.
Background
After the metal workpiece is processed, the surface of the metal workpiece generally carries dirt, such as various cutting fluids, guide rail oil, rust-proof oil and the like, if the metal workpiece is not cleaned in time, the smooth proceeding of a processing procedure can be affected, the surface corrosion of the metal can be initiated and aggravated, and the processing quality and the service life of a product are affected. In addition, the cleaning process is not carried out before the finishing processes such as electroplating, phosphating (silanization), glazing, paint spraying and the like and during the maintenance and the preservation of mechanical equipment. The selection of the cleaning process and the quality of the cleaning effect not only relate to important problems of safety, energy, environmental protection and the like, but also directly influence the performance and quality of the product, so that the cleaning process becomes an indispensable important link in the modern industrial production.
The cleaning procedure mainly uses metal cleaning agents, and the metal cleaning agents have the following three types: solvent-based, complex-type and water-based cleaners. The solvent-type cleaning agent takes an organic solvent as a main component, has strong cleaning capability, but is mostly inflammable and volatile, and causes harm to ecological environment and human health. The compound cleaning agent (also called semi-water-based cleaning agent) is formed by compounding an organic solvent and a surfactant, and the environment pollution problem exists because the organic solvent is contained in the components of the compound cleaning agent. The water-based metal cleaning agent has a series of advantages of replacing oil with water, saving energy, protecting environment, not endangering the health of operators, being nonflammable, having low cost and the like, and is rapidly developed. However, the water-based metal cleaning agent still has the problems of easy foaming, easy residue and shortened service life due to the fact that a large amount of surfactant is taken away by foam overflow when serious. Therefore, low-foaming rust inhibitive metal cleaning agents are a research hotspot in industrial cleaning.
The water-based cleaning agent mainly takes water as a main body, is safe and reliable, is environment-friendly, and plays a role in degreasing and ash removal by compounding inorganic salt builder, surfactant and other assistants (pH regulator, corrosion inhibitor, antioxidant, brightening agent, defoamer and the like). The water-based detergent has the essence of dirt cleaning, namely, dirt is wetted, permeated, emulsified and solubilized by a surfactant, an emulsifier and a penetrant, the adhesive force of the dirt on the surface of an object is reduced, and the dirt on the surface of the object is quickly separated by means of a physical cleaning method such as temperature rising, wiping, spray rinsing, mechanical vibration, ultrasonic cleaning and the like, so that the cleaning process is completed. The cleaning effect is mainly divided into three steps: (1) The cleaning agent wets and permeates dirt, so that the cleaning agent is combined with the dirt; (2) The core component surfactant of the cleaning agent starts to generate emulsification, dispersion and solubilization, so that dirt is separated from the surface of an object and then dispersed into a cleaning medium; (3) The cleaning process is a reversible process, and the cleaned stains can be adsorbed to the surface of the object again, so that a certain mechanical means is needed to be used for timely disposing the cleaned stains in order to prevent the situation.
However, because the nonionic surfactant in the low-foam metal cleaning agent needs to be at a certain temperature (cloud point) to achieve no foam, the common low-foam metal cleaning agent generally needs to be above a certain temperature to keep the low-foam metal cleaning agent itself, but foam is increased when oil dirt enters the cleaning agent, so that the low-foam metal cleaning agent is difficult to use. Although the organic silicon defoamer is added for temporary and rapid defoaming, a large amount of solubilizer is required to be added when the defoamer is prepared due to poor compounding property of the defoamer, so that the cost is increased, and cleaning liquid is easy to separate out, and even a spray nozzle is blocked when the cleaning liquid is serious; in addition, silicone defoamers contain a large amount of emulsifiers, and during the cleaning process, the cleaning liquid causes more foam after coating the silicone. It can be seen that the silicone defoamer has a negative impact on the detergency of the water-based metal cleaner. Therefore, without the addition of silicone defoamers, it is necessary to develop a low foaming, highly efficient, rust-resistant water-based metal cleaner that can be applied at normal temperature.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
In view of the shortcomings of the prior art, the application aims to provide a high-efficiency low-foam antirust type ferrous metal water-based cleaning agent and a preparation method thereof, and aims to solve the problem that the cleaning performance is limited due to the fact that a nonionic surfactant and a defoaming agent are added into the conventional water-based metal cleaning agent.
The technical scheme of the application is as follows:
in a first aspect, the present application provides a high-efficiency low-foam rust-preventive ferrous metal water-based cleaning agent, which comprises the following components in percentage by mass: 10-25% of organic base, 6-12% of antirust agent, 2-5% of dispersing agent, 1-3% of penetrating agent, 2-6% of chelating agent and the balance of deionized water.
The application adopts water, organic alkali, antirust agent and dispersant to compound without adopting nonionic surfactant, defoamer and other components, so as to obtain the high-efficiency, low-foam and antirust ferrous metal water-based cleaning agent. The ferrous metal water-based cleaning agent has good stability, cleaning performance and defoaming performance, can effectively remove oil stains and solid particles remained on the surface of metal, has good cleaning effect at normal temperature, can provide rust protection for the metal, and does not need to additionally add a defoaming agent to influence the stability of the system.
Further, the organic base is one or more than two of monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine, N-methyldiethanolamine, triisopropanolamine, monoisopropanolamine, dicyclohexylamine, AMP95, diethylaminoethanol and diglycolamine.
Further, the organic base is a combination of diglycolamine, AMP95 and dicyclohexylamine, and the mass ratio of the diglycolamine to the AMP95 to the dicyclohexylamine is 1:2:1.
Further, the antirust agent is one or more than two of mixed dibasic acid, tribasic acid, neodecanoic acid, benzotriazole, GM1, dodeca dibasic acid, sebacic acid, methylbenzotriazole and sodium salt of the methylbenzotriazole.
Further, the rust inhibitor is a combination of sebacic acid, neodecanoic acid and tribasic acid, and the mass ratio of the sebacic acid, neodecanoic acid and tribasic acid is 3:2:3.
Further, the dispersing agent is one or more than two of polyacrylic acid, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium polyacrylate and sodium carboxymethyl cellulose.
Still further, the dispersant is polyacrylic acid.
Further, the penetrating agent is one or more than two of JFC, JFC-1, JFC-2 and JFC-E;
the chelating agent is one or more of EDTA-2Na, sodium gluconate, EDTA-4Na, HEDP-2Na and HEDP-4 Na.
Further, the penetrating agent is JFC-2; the chelating agent is HEDP-2Na;
the mass ratio of JFC-2 to HEDP-2Na is 2:3.
In a second aspect, the present application provides a method for preparing the efficient low-foam antirust type ferrous metal water-based cleaning agent according to the first aspect, wherein the method comprises the following steps:
adding the deionized water and the organic base into a container under the stirring state, uniformly dispersing, and fully stirring until the mixed solution is clear and transparent;
under the heating and stirring state, adding the antirust agent into the container, heating to 45-55 ℃, stopping heating, and stirring until the mixed solution is clear and transparent;
sequentially adding the penetrating agent, the chelating agent and the dispersing agent into the container, and finally stirring for 30-90min to obtain the efficient low-foam antirust ferrous metal water-based cleaning agent; wherein, in the process of sequentially adding the penetrating agent, the chelating agent and the dispersing agent, each component is stirred until being uniformly added, and then the next component is added.
The high-efficiency low-foam antirust ferrous metal water-based cleaning agent has the following beneficial effects:
(1) The cleaning performance is good, the residual greasy dirt and solid particles on the metal surface can be effectively removed, and the cleaning effect is good at normal temperature.
(2) The water-based cleaning agent has good rust resistance, and can provide rust protection for metals.
(3) The compatibility is good, and the cutting fluid and the antirust agent are compatible with most cutting fluids.
(4) The environment-friendly food is safe and environment-friendly, does not contain additives harmful to human body, does not contain sulfur or chlorine, has low odor and small irritation, and is environment-friendly.
(5) The water-based cleaning agent has high stability, stable stock solution and diluent states and long service life.
Detailed Description
The application provides a high-efficiency low-foam antirust ferrous metal water-based cleaning agent and a preparation method thereof, and the application is further described in detail below in order to make the purposes, the technical scheme and the effects of the application clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The cleaning agent in the prior art is generally added with nonionic surfactant and defoamer, and the compatibility of the components in the cleaning agent is common, so that the cleaning temperature and the cleaning performance of the cleaning agent are easily limited, and the components are separated out when serious, and the working procedure is required to be increased for cleaning.
Aiming at the existing problems, the application provides a high-efficiency low-foam antirust type ferrous metal water-based cleaning agent by combining water-based cleaning agent components and cleaning mechanisms, wherein the cleaning agent comprises the following components in percentage by mass: 10-25% of organic base, 6-12% of antirust agent, 2-5% of dispersing agent, 1-3% of penetrating agent, 2-6% of chelating agent and the balance of deionized water.
The application adopts water, organic alkali, antirust agent and dispersant to compound without adopting nonionic surfactant, defoamer and other components, so as to obtain the high-efficiency, low-foam and antirust ferrous metal water-based cleaning agent. The ferrous metal water-based cleaning agent has good stability, cleaning performance and defoaming performance, can effectively remove oil stains and solid particles remained on the surface of metal, has good cleaning effect at normal temperature, can provide rust protection for the metal, and does not need to additionally add a defoaming agent to influence the stability of the system.
The high-efficiency low-foam rust-proof ferrous metal water-based cleaning agent provided by the application needs to be diluted by adding water when in use to obtain the diluent, wherein the content of water in the diluent is 90-95%, tap water is used, and the cleaning property and the rust resistance of the cleaning agent are not affected.
Further, the organic base is one or more of monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine, N-methyldiethanolamine, triisopropanolamine, monoisopropanolamine, dicyclohexylamine, AMP95 (2-amino-2-methyl-1-propanol), diethylaminoethanol and diglycolamine. The storage and rust resistance of the cleaning agent are both related to pH, and in the application, the rust inhibitor is selected to be a small molecule acid, and the organic base is selected to balance the pH. Further, the organic base is preferably a combination of diglycolamine, AMP95 and dicyclohexylamine, the mass ratio of the combination of diglycolamine, AMP95 and dicyclohexylamine being 1:2:1. In the application, the pH of the cleaning agent after being prepared into a diluent is required to be kept at 9.5-10.7, so that the cleaning agent is not easy to deteriorate and cannot corrode the metal surface due to strong alkalinity. The optimized organic alkali combination can effectively meet the pH range requirement of the cleaning agent after being matched with the rust inhibitor, does not corrode the surface of ferrous metal, has good rust resistance, and can play a role in corrosion inhibition and protection on the surface of a base material.
Further, the rust inhibitor is one or more than two of mixed dibasic acid, tribasic acid, neodecanoic acid, benzotriazole, GM1, dodeca dibasic acid, sebacic acid, methylbenzotriazole and sodium salt of methylbenzotriazole. In order to further ensure that the ferrous metal surface is not corroded or rusted, it is necessary to add rust inhibitors to the cleaning agent. Preferably, the rust inhibitor is a combination of sebacic acid, neodecanoic acid and tribasic acid, and the mass ratio of the sebacic acid to the neodecanoic acid to the tribasic acid is 3:2:3, and in the application, the rust inhibitor combination preferably has the function of adjusting the pH of the cleaning agent, can stably exist in the cleaning agent solution and plays a role of corrosion inhibition protection, and the rust resistance of the cleaning agent is further improved.
The rust resistance of the conventional water-based cleaning agent is mainly realized by compounding organic alkali and a rust inhibitor (tribasic acid, mixed dibasic acid and the like), but most of workpieces have white particles precipitated on the surface after cleaning, the precipitated white particles are mainly rust inhibitor (tribasic acid, mixed dibasic acid and the like), and the white particles are often required to be erased for subsequent use, so that unnecessary procedures are increased. Through the preferable compounding ratio of the organic base and the antirust agent, the antirust agent has excellent antirust property, and meanwhile, white particles cannot be separated out after the workpiece is dried, so that the stability is good.
Further, the dispersing agent is one or more than two of polyacrylic acid, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium polyacrylate and sodium carboxymethyl cellulose. The selected dispersing agent has dispersing and emulsifying functions, can improve the dispersing performance and emulsifying performance of the cleaning agent, and is also beneficial to dispersing the sediment or solid particles to be cleaned into the solution on the metal during cleaning, so that the sediment or solid particles have better stability and uniformity, are easier to be taken away by the cleaning agent, and further improve the cleaning performance. Still further, the dispersant is preferably polyacrylic acid. The preferred polyacrylic acid has excellent dispersibility and penetrability, and also has the advantages of environmental protection, easy dissolution, low cost and the like. The black metal is widely applied, and in the application, the preferable polyacrylic acid can better act on the black metal, and can also cope with more surface morphology through the excellent dispersibility and permeability of the polyacrylic acid, so that the cleaning degree is more thorough.
In order to further enhance the cleaning ability of the cleaning agent, it is necessary to add a certain amount of penetrant and chelating agent to the cleaning agent. Further, the penetrating agent is one or more than two of JFC, JFC-1, JFC-2 and JFC-E; the chelating agent is one or more of EDTA-2Na, sodium gluconate, EDTA-4Na, HEDP-2Na and HEDP-4 Na. Under the action of the penetrating agent and the chelating agent, an oxide layer, dirt and the like attached to the metal surface can be peeled off, infiltrated, dispersed and chelated into the cleaning liquid, so that the cleaning capability of the cleaning liquid is effectively improved. Still further, the penetrating agent is preferably JFC-2, the chelating agent is preferably HEDP-2Na, and the mass ratio of JFC-2 to HEDP-2Na is 2:3. The HEDP-2Na has good stability and certain solubility in the cleaning agent. After multiple tests, the application finds that JFC-2 and HEDP-2Na are in a mass ratio of 2:3, and when the HEDP-2Na is added in an amount of 3% by mass in the cleaning agent, the cleaning capability is best, the HEDP-2Na can be stably maintained in a cleaning agent system through high and low temperature tests, and the selected HEDP-2Na serving as an organic phosphoric acid scale and corrosion inhibitor can form stable complex and dissolved oxide with various metals, so that the HEDP-2Na can also play a good role in inhibiting the base material while playing a role in cleaning. The penetrating agent JFC-2 can accelerate the oil stain dispersing capacity so as to improve the cleaning capacity, and the effect of 1+1 & gt2 can be obtained by compounding JFC-2 and HEDP-2Na in a proper proportion.
Further, in the application, the added HEDP-2Na improves the cleaning capability of the cleaning agent, and meanwhile, partial free sodium ions existing in the HEDP-2Na can react with the preferable polyacrylic acid to generate sodium polyacrylate, so that the polyacrylic acid and the sodium polyacrylate have good dispersibility in the system, the dispersibility of each component in the cleaning agent system can be improved, and the dispersion degree and the cleaning stability of the cleaning agent are further improved.
In the application, in order to improve the stability of the cleaning agent and simultaneously have higher rust resistance so as to develop a formula, the components are screened to prepare the ferrous metal water-based cleaning agent with good comprehensive performance, the defoaming property and the cleaning performance of the cleaning agent are obviously improved while the rust resistance of the cleaning agent is improved, the performance requirements of ferrous metal cleaning procedures can be effectively met, and the cleaning agent is suitable for normal temperature conditions and can be subjected to subsequent treatment without additional flushing processes.
The application also provides a preparation method of the efficient low-foam antirust type ferrous metal water-based cleaning agent, which comprises the following steps of:
adding deionized water and organic alkali into a container under stirring, uniformly dispersing, and fully stirring until the mixed solution is clear and transparent;
under the heating and stirring state, adding an antirust agent into the container, heating to 45-55 ℃, stopping heating, and stirring until the mixed solution is clear and transparent;
sequentially adding a penetrating agent, a chelating agent and a dispersing agent into a container, stirring each component until the components are added uniformly, adding the next component, and finally stirring for 30-90min to obtain the efficient low-foam antirust type ferrous metal water-based cleaning agent.
The organic alkali and the antirust agent can fully react through heating, and are better dissolved in a cleaning agent system, wherein the added penetrant and chelating agent are neutral, the adding sequence does not influence the stability of the system, and finally the dispersing agent is added to improve the dispersion degree of the rest components in the cleaning agent system and improve the stability. According to the preparation method, the components are sequentially added according to the proportion and fully stirred and dissolved, so that the solution is uniform and clear, direct contact among the components is avoided, additional reaction is avoided, and the stability of the components in the cleaning agent is improved.
Further description will be given below by way of specific examples.
1. Some sources of raw materials for each example and comparative example of the present application are as follows:
diethylene glycol is prepared by: junyan new material technology (Shanghai) limited;
AMP95: a ceramic;
dicyclohexylamine: tianjin Hao Ruisen chemical industry Co., ltd;
sebacic acid: the Heng shui Beijing chemical industry Co., ltd;
neodecanoic acid: kaiser Biotech materials Co., ltd;
tribasic acid: tianjin Hao Ruisen chemical industry Co., ltd;
sodium polyacrylate: junyan new material technology (Shanghai) limited;
JFC-2: linyi city Lvsen chemical industry Co., ltd;
HEDP-2Na: shandong Tai and technology stock Co., ltd.
2. The preparation method of the high-efficiency low-foam rust-proof type ferrous metal water-based cleaning agent comprises the following steps of:
(1) Adding deionized water and organic alkali into a container under stirring, uniformly dispersing, and fully stirring until the mixed solution is clear and transparent;
(2) Under the heating and stirring state, adding an antirust agent into the container, heating to 55 ℃, stopping heating, and stirring until the mixed solution is clear and transparent;
(3) Sequentially adding a penetrating agent, a chelating agent and a dispersing agent into a container, stirring each component until the components are added uniformly, adding the next component, and finally stirring for 30min to obtain the efficient low-foam antirust type ferrous metal water-based cleaning agent.
3. The performance test method of the high-efficiency low-foam antirust type ferrous metal water-based cleaning agent in each embodiment of the application is as follows:
(1) pH and defoaming test method: reference is made to section 5.3, section 5.8 in the mechanical industry standard JB/T4323-2019;
(2) The rust resistance and cleaning force test method comprises the following steps: reference is made to section 5.4, section 5.6 in the mechanical industry standard JB/T4323-2019;
(3) Wet heat test method: the rust prevention period is tested by referring to the national standard GB/T2361-1992.
The high-efficiency low-foam antirust type ferrous metal water-based cleaning agent obtained in each embodiment is taken as a stock solution, diluted by deionized water to obtain a diluted solution, the content of the stock solution of the high-efficiency low-foam antirust type ferrous metal water-based cleaning agent in the diluted solution is 5wt%, and performance detection is carried out on the diluted solution.
Examples 1-1 to 1-8
The high-efficiency low-foam antirust type ferrous metal water-based cleaning agent of the embodiment 1-1 to 1-8 comprises the following raw liquid components in table 1:
TABLE 1
；
The test results of rust inhibitive performance, wash oil rate and defoaming performance of examples 1-1 to 1-8 are shown in Table 2:
TABLE 2
；
As can be seen from Table 2, when one organic base is selected for preparing the cleaning agent stock solution in examples 1-1 to 1-3, lamination test is not qualified, and when organic bases with different proportions are selected for preparing the cleaning agent stock solution, the rust-preventing effect of examples 1 to 6 is superior to that of other groups, which means that the organic base combination prepared by compounding diglycolamine, AMP95 and dicyclohexylamine according to the mass ratio of 1:2:1 has better rust-preventing performance than that of the organic base combination prepared by compounding according to other proportions.
Examples 2-1 to 2-7
The high-efficiency low-foam antirust type ferrous metal water-based cleaning agent of the embodiment 2-1 to 2-7 has the raw liquid components shown in the table 3:
TABLE 3 Table 3
；
The test results of rust inhibitive performance, wash oil rate and defoaming performance of examples 2-1 to 2-7 are shown in Table 4:
TABLE 4 Table 4
；
As can be seen from table 4, the rust inhibitors (sebacic acid, neodecanoic acid, tribasic acid) have a larger difference in rust inhibition effect finally measured after the stock solutions are prepared according to different proportions, and when the sebacic acid, neodecanoic acid and tribasic acid are combined according to the mass ratio of 3:2:3, the rust inhibition effect is superior to the proportion compounded in other examples after the cleaning agent is prepared.
After the test pieces of examples 2-1 to 2-7 are dried, it is found that part of white particles are precipitated except for the test pieces of examples 2-6, and the cleaning agent prepared by combining the preferred antirust agent combination of examples 2-6 with the organic base has excellent antirust property, and meanwhile, the antirust agent and the organic base are completely reacted, so that white particles are not precipitated after the workpiece is dried, and the stability is good.
Examples 3-1 to 3-6 and comparative examples 1-2
The high-efficiency low-foam antirust type ferrous metal water-based cleaning agent of the examples 3-1 to 3-6 and the comparative examples 1-2 has the raw liquid components shown in Table 5:
TABLE 5
；
The test results of rust inhibitive performance, wash oil rate and defoaming property of examples 3-1 to 3-6 and comparative examples 1-2 are shown in Table 6:
TABLE 6
；
As can be seen from Table 6, the oil washing rate of the cleaning agent can be effectively improved by adding the penetrating agent and the chelating agent, and comparison shows that the oil washing rate is highest and the oil washing effect of the cleaning agent is optimal when the ratio of the penetrating agent to the chelating agent is 2:3.
The application develops a high-efficiency, low-foam and rust-proof black water-based metal cleaning agent which does not contain a nonionic surfactant and an organosilicon defoamer, does not contain nitrite, is environment-friendly and suitable for normal temperature conditions, and can be tested by screening and reasonably matching various additives with the black water-based metal cleaning agent in the direction and testing the cleaning agent through a defoaming test, a rust-proof test and a cleaning capability test to realize the requirements of stability, cleaning performance and the like of the cleaning agent, so that the black water-based metal cleaning agent with good comprehensive performance is prepared.
It will be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by those skilled in the art in light of the above description, all of which are intended to be within the scope of the present application.
Claims (10)
1. The efficient low-foam antirust ferrous metal water-based cleaning agent is characterized by comprising the following components in percentage by mass: 10-25% of organic base, 6-12% of antirust agent, 2-5% of dispersing agent, 1-3% of penetrating agent, 2-6% of chelating agent and the balance of deionized water.
2. The efficient low-foam rust-preventive ferrous metal water-based cleaning agent according to claim 1, wherein the organic base is one or more of monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine, N-methyldiethanolamine, triisopropanolamine, monoisopropanolamine, dicyclohexylamine, AMP95, diethylaminoethanol and diglycolamine.
3. The efficient low-foam rust-proof ferrous metal water-based cleaning agent according to claim 2, wherein the organic base is a combination of diglycolamine, AMP95 and dicyclohexylamine, and the mass ratio of the diglycolamine to the AMP95 to the dicyclohexylamine is 1:2:1.
4. The efficient low-foam rust-proof ferrous metal water-based cleaning agent according to claim 1, wherein the rust-proof agent is one or more than two of mixed dibasic acid, tribasic acid, neodecanoic acid, benzotriazole, GM1, dodecandioic acid, sebacic acid, methylbenzotriazole and sodium salt of methylbenzotriazole.
5. The efficient low-foam rust-proof ferrous metal water-based cleaning agent according to claim 4, wherein the rust inhibitor is a combination of sebacic acid, neodecanoic acid and tribasic acid, and the mass ratio of the sebacic acid, neodecanoic acid and tribasic acid is 3:2:3.
6. The efficient low-foam rust-proof ferrous metal water-based cleaning agent according to claim 1, wherein the dispersing agent is one or more than two of polyacrylic acid, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium polyacrylate and sodium carboxymethyl cellulose.
7. The efficient low-foam rust inhibitive ferrous metal water-based cleaning agent of claim 6, wherein the dispersant is polyacrylic acid.
8. The efficient low-foam rust-preventive ferrous metal water-based cleaning agent according to claim 1, wherein the penetrating agent is one or more of JFC, JFC-1, JFC-2 and JFC-E;
the chelating agent is one or more of EDTA-2Na, sodium gluconate, EDTA-4Na, HEDP-2Na and HEDP-4 Na.
9. The efficient low-foam rust inhibitive ferrous metal water-based cleaning agent of claim 8, wherein the penetrant is JFC-2; the chelating agent is HEDP-2Na;
the mass ratio of JFC-2 to HEDP-2Na is 2:3.
10. A method for preparing the efficient low-foam rust-proof ferrous metal water-based cleaning agent as claimed in any one of claims 1-9, which is characterized by comprising the following steps:
adding the deionized water and the organic base into a container under the stirring state, uniformly dispersing, and fully stirring until the mixed solution is clear and transparent;
under the heating and stirring state, adding the antirust agent into the container, heating to 45-55 ℃, stopping heating, and stirring until the mixed solution is clear and transparent;
sequentially adding the penetrating agent, the chelating agent and the dispersing agent into the container, and finally stirring for 30-90min to obtain the efficient low-foam antirust ferrous metal water-based cleaning agent; wherein, in the process of sequentially adding the penetrating agent, the chelating agent and the dispersing agent, each component is stirred until being uniformly added, and then the next component is added.
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