CN108315748B - Metal cleaning agent and preparation method thereof - Google Patents
Metal cleaning agent and preparation method thereof Download PDFInfo
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- CN108315748B CN108315748B CN201810133723.7A CN201810133723A CN108315748B CN 108315748 B CN108315748 B CN 108315748B CN 201810133723 A CN201810133723 A CN 201810133723A CN 108315748 B CN108315748 B CN 108315748B
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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
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
- C23G1/26—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions using inhibitors
Abstract
The invention relates to a cleaning agent, in particular to a metal cleaning agent and a preparation method thereof, which solve the problem that the existing cleaning agent needs longer preparation time and comprise the following components in parts by weight: 10-18 parts of builder, 4-15 parts of surfactant, 0.2-0.8 part of solubilizer, 1-1.5 parts of corrosion inhibitor, 0.2-0.5 part of antirust agent, 1-2 parts of complexing agent, 0.2-0.8 part of preservative, 0.5-1.5 parts of antistatic agent and 0.5-1 part of organic silicon defoamer, and also comprises water for dissolving the components.
Description
Technical Field
The invention relates to a cleaning agent, in particular to a metal cleaning agent and a preparation method thereof.
Background
When the metal workpiece is subjected to hot pressing and stamping, a large amount of friction heat and deformation heat can be generated on the surface of the metal workpiece, and a large amount of heat can cause hot corrosion white spots on the surface of the metal workpiece due to friction overheating, so that the yield is reduced. Therefore, in order to reduce the heat generated on the surface during the machining process of the metal workpiece, the surface of the metal workpiece is usually rubbed with the drawing oil and/or the cutting fluid. The drawing oil or the cutting fluid is used as a medium of a drawing and deformation lubricant, so that the heat generated during the drawing deformation of the metal surface can be rapidly cooled, and the grinding mark generated by the friction between a die and the metal can be prevented.
However, since the stretching oil is an oily medium with extremely high oil content, and is prepared by mixing various mineral base oils, compounded high-performance vulcanized lard oil and vulcanized fatty acid ester as main agents and matching with various solubilizers and surface conditioning agents, when the stretching oil and the cutting fluid are used for assisting metal workpiece processing, the stretching oil and the cutting fluid can be attached to the stretched metal workpiece, so that oil stains are generated on the surface of the metal workpiece, and the oil stains on the surface of the workpiece are cleaned and packaged into a finished product.
At present, tensile oil cleaning agents are generally used in the industry to clean tensile oil on the surface of a workpiece, most of the cleaning agents are strong acidic or alkaline cleaning agents, the traditional cleaning mode is even gasoline cleaning, and the cleaning process is unsafe. And the metal workpiece is cleaned by adopting a stronger acidic or alkaline cleaning agent or gasoline, the cleaned metal workpiece is easy to generate corrosive discoloration, the duration time of the cleaning effect is short, and particularly when the Al-Si-Cu series alloy is cleaned, the adverse effects of surface oxidation and blackening of the No. 12 aluminum material are easily caused, so that the yield is reduced. The strong acid and strong alkaline cleaning agent and the gasoline are not environment-friendly and are easy to cause secondary pollution to the environment, and the diluted liquid after cleaning cannot be completely degraded.
Chinese patent CN105063636A discloses an ultrasonic cleaning agent for aluminum alloy shells of mobile phones and a preparation method thereof, wherein the ultrasonic cleaning agent comprises the following raw materials in percentage by weight: 11-21% of cleaning assistant, 2-5% of secondary alcohol polyoxyethylene ether, 2-5% of AEO-7, 6-10% of secondary alkyl sodium sulfonate, 5-8% of ethoxylated fatty acid methyl ester sodium sulfonate, 2-5% of corrosion inhibitor, 5-10% of penetrating agent JFC and the balance of water. The ultrasonic cleaning agent for the aluminum alloy shell of the mobile phone disclosed by the invention is compounded by adopting the surfactant, the inorganic salt substance and the like, so that the ultrasonic cleaning agent is ensured to be alkalescent, a cleaned metal workpiece is not easy to generate corrosive discoloration, the cleaning effect is good, but the ultrasonic cleaning agent needs to be stirred for 1-3 hours in the preparation process, the preparation time is long, and the production efficiency is influenced.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, a first object of the present invention is to provide a metal cleaning agent, which has the advantages of strong cleaning effect and fast cleaning speed.
The technical purpose of the invention is realized by the following technical scheme: the metal cleaning agent comprises the following components in parts by weight: 10-18 parts of builder, 4-15 parts of surfactant, 0.2-0.8 part of solubilizer, 1-1.5 parts of corrosion inhibitor, 0.2-0.5 part of antirust agent, 1-2 parts of complexing agent, 0.2-0.8 part of preservative, 0.5-1.5 parts of antistatic agent, 0.5-1 part of organic silicon defoamer and water for dissolving the components.
By adopting the technical scheme, the builder, also called a washing assistant, has no obvious washing capacity, but can improve the washing and decontamination capacity of the surfactant when added into a detergent formula. Meanwhile, the builder has a buffering effect on pH value, and the builder is added to play a role in buffering and adjusting the pH value of the solution reagent, so that the pH value is not greatly changed, and the water quality can be softened. The builder comprises one or a mixture of more than two of polymeric phosphate, carbonate, sulfate, metasilicate, citrate and tartrate, and the polymeric phosphate is preferably pyrophosphate, tripolyphosphate, tetraphosphate or hexametaphosphate because the builder has strong cleaning ability, low alkalinity and no corrosion to aluminum alloy.
The molecular structure of the surfactant is composed of hydrophilic groups and lipophilic groups. The surfactant is dissolved in water and adsorbed on the interface between water and dirt, so that the free energy of the interface is reduced to realize the effect of decontamination. The molecules of the surfactant have a common basic structure, i.e., one end of the molecule is a linear, branched, cyclic or polycyclic carbon-chlorine chain, and the other end is-COO-, -SO4-、-SO3-、-(CH2CH2O)n、-NH2And an isocolar group. The nonionic surfactant is selected from fatty alcohol polyoxyethylene ether (such as AEO-7 and AEO-3), alkylphenol polyoxyethylene ether (such as TX-10), isomeric alcohol polyoxyethylene ether (such as Rosedia FANSAMAX IDA L), secondary alcohol polyoxyethylene ether (such as Dow 15-S-12), octyl phenol polyoxyethylene ether (such as Dow X-15), nonylphenol polyoxyethylene ether, coconut oil fatty acid diethanolamide, etc.; the anionic surfactants include sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium dodecyl polyoxyethylene ether sulfate, polyacrylic acid and its salt, and secondary alkyl sodium sulfonate.
The surfactant can be compounded with inorganic salt substances in the reagent, so that the reagent solution is alkalescent and has a good degreasing effect. When the surfactant and the builder are used together, the builder and the surfactant molecules generate a synergistic effect, so that dirt is dispersed, emulsified and peptized in water, and the washing effect is better than that when the surfactant is used alone.
The solubilizer means a surfactant having solubilizing ability. Solubilization refers to the process of adding solubility of a poorly soluble agent in a solvent and forming a solution under the action of a surfactant. The use of the solubilizer can ensure that a reagent solution system is more stable, and the reagent solution is not easy to generate the phenomenon of layering and turbidity. The solubilizer may be an alkenyl succinic acid glycoside, preferably octenyl succinic anhydride,
corrosion inhibitors, which may also be referred to as corrosion inhibitors, are chemicals or compounds that can prevent or slow the corrosion of materials. A small amount of corrosion inhibitor is added into the reagent, so that a thin protective film can be formed on the surface of a metal product, the corrosion rate of the metal product is slowed down, and the service life of the metal product is prolonged. Its dosage is very small (0.1% -1% by weight), but its effect is obvious.
The rust inhibitor is a super efficient synthetic penetrant, can permeate into rust, corrosive substances and oil stains strongly, thereby easily removing rust and corrosive substances on the surface of a metal product, and has the performances of permeating rust removal, loosening lubrication, corrosion resistance, metal protection and the like. When the antirust agent is added into the reagent solution and the reagent solution is used for cleaning the metal workpiece, a layer of lubricating film can be formed on the surface of the metal workpiece and is used for inhibiting the corrosion of moisture and other chemical components to the metal workpiece.
The complexing agent can be one or more of sodium metasilicate, Ethylene Diamine Tetraacetic Acid (EDTA), sodium gluconate, sodium citrate, tetrasodium ethylene diamine tetraacetic acid and disodium ethylene diamine tetraacetic acid. Preferably, the complexing agent adopts disodium ethylene diamine tetraacetate, which can effectively prevent metal ions such as calcium, magnesium and the like from generating chemical reaction to form precipitates in the cleaning process and can gradually remove the original scale on the surface of the metal workpiece.
The metal workpiece is cleaned by the cleaning agent added with the preservative, so that the corrosion resistance of the metal workpiece can be improved, and the service life of the workpiece is prolonged.
The antistatic agent is used for eliminating static accumulated on the surface of a metal part in time, and can prevent metal from rusting and corroding, prevent static accumulation and the like.
The addition of the organic silicon defoaming agent can inhibit or eliminate foam generated in the preparation process of the reagent, improve the uniformity of the reagent solution, and ensure that substances in the reagent solution are uniformly dispersed and are not easy to aggregate into large-particle substances to generate precipitates, so that the reagent fails.
By using the formula, the cleaning agent has strong cleaning power, and can effectively improve the detergency of the original cleaning agent at low concentration and low temperature or high temperature; because the reagent of the invention has negative charge, when the active factors are respectively adsorbed on the surface of the product workpiece and the dirt, the electrostatic repulsion between the surface of the product workpiece and the dirt is increased, the effect of preventing the dirt from being redeposited on the surface of the cleaned product workpiece is achieved, and the surface of the workpiece is cleaner; the method has the advantages that the workpiece is not corroded, oil stains after stretching are not left, the original color of a product is not changed, an oxide layer is not generated, and corrosion spots are not generated; the water-soluble cleaning agent has the advantages of good water solubility, good decontamination, less foam, good biodegradability, environmental protection, safety, no harm to human bodies and low cost.
The invention is further configured to: the builder comprises the following components in parts by weight: 6-11 parts of tripolyphosphate and 4-7 parts of industrial silicate.
By adopting the technical scheme, the tripolyphosphate and the industrial silicate have higher cleaning capability, particularly the tripolyphosphate has the advantages of no toxicity, low price, strong capability of chelating calcium and magnesium ions and the like, and has the performances of emulsification, dispersion, solubilization, obvious synergistic effect with a surfactant and the like, so that the cleaning effect of the cleaning agent disclosed by the invention is better. Tests show that the cleaning effect of the builder with the proportion is better.
The invention is further configured to: the surfactant comprises the following components in parts by weight: 2-7 parts of nonylphenol polyoxyethylene ether surfactant, 1-4 parts of polyethylene glycol surfactant and 1-4 parts of coconut oil fatty acid diethanolamide nonionic surfactant.
By adopting the technical scheme, tests show that the compounding synergistic effect of the nonylphenol polyoxyethylene ether, the polyethylene glycol and the coconut oil fatty acid diethanolamide in the proportion is better, the decontamination capability is strong, the bleaching performance is good, and the oil removing agent has extremely strong permeability, emulsification and deoiling functions under strong alkali and high-temperature conditions.
The polyoxyethylene nonyl phenyl ether is a nonionic surfactant which is obtained by condensation reaction of nonyl phenol and ethylene oxide under the action of a catalyst, and has good penetrating, emulsifying, dispersing, acid-resisting, alkali-resisting, hard water-resisting, reduction-resisting and oxidation-resisting capabilities.
The polyethylene glycol is non-toxic and non-irritant, has good water solubility, and has good intermiscibility with a plurality of organic matter components; has excellent lubricating property, moisture retention property, dispersibility, adhesiveness and antistatic property.
The coconut oil fatty acid diethanolamide has no cloud point, is easy to dissolve in water, has good foaming, foam stabilizing, penetration decontamination, hard water resistance and other functions, and can be compatible with various surfactants.
The invention is further configured to: the corrosion inhibitor is benzotriazole.
By adopting the technical scheme, the benzotriazole is mainly used as a water treatment agent, a metal antirust agent and a corrosion inhibitor, is used in antirust oil (grease) products, and has a particularly obvious corrosion prevention effect on copper and copper alloy, silver and silver alloy. Meanwhile, the benzotriazole is a good ultraviolet absorber and can play a role in stabilizing ultraviolet-sensitive products, and the benzotriazole is added into the cleaning agent, so that the processed copper piece is not discolored, and the glossiness of the surface of a processed piece is maintained.
The invention is further configured to: the antirust agent is monoethanolamine.
By adopting the technical scheme, the monoethanolamine is added into the cleaning agent, so that the metal workpiece cleaned by using the cleaning agent disclosed by the invention has good antirust property, the antirust time of the metal workpiece is prolonged, and the service life of the metal workpiece is further prolonged.
The invention is further configured to: the complexing agent is disodium ethylene diamine tetraacetate.
By adopting the technical scheme, the disodium ethylene diamine tetraacetate, also called EDTA-2Na, is a good compounding agent in chemistry, can almost form stable chelate with all metal ions, effectively prevents the metal ions such as calcium, magnesium and the like from generating chemical reaction to form precipitates in the cleaning process, and can gradually remove the original scale on the surface of a metal workpiece.
The invention is further configured to: the preservative is methyl paraben or propyl paraben.
By adopting the technical scheme, the methyl paraben and the propyl paraben both have excellent biodegradability and are efficient emulsion stabilizers, and the methyl paraben or the propyl paraben is added into the cleaning agent as a preservative, so that the corrosion resistance of a workpiece is improved, the service life of the workpiece is prolonged, the biodegradability of the cleaning agent is also improved, and the cleaning agent has the advantages of environmental protection and safety.
The invention is further configured to: the antistatic agent is alkylolamide potassium phosphate.
By adopting the technical scheme, the potassium alkylolamide phosphate has good antistatic property, can eliminate static accumulated on the surface of a metal part in time, and can prevent metal from rusting and corroding and prevent static accumulation.
The second purpose of the invention is to provide a method for preparing the metal cleaning agent, which is simple in preparation method and high in preparation speed, and the prepared cleaning agent has the advantages of strong cleaning effect and high cleaning speed.
The technical purpose of the invention is realized by the following technical scheme: 60-82 parts by weight of water is put into a container, the water temperature is 24-28 ℃, then the preservative, the antistatic agent, the builder, the surfactant, the organic silicon defoamer, the solubilizer, the corrosion inhibitor, the antirust agent and the complexing agent are sequentially put into the container according to the corresponding parts by weight to be dissolved uniformly, and the next component is added after each component is added and stirred for 1-2 minutes.
By adopting the technical scheme, the cleaning agent can be prepared by mixing and uniformly stirring the reagents according to the proportion, the preparation method is simple, the preparation efficiency is high, and the production efficiency can be effectively improved. The prepared cleaning agent is diluted by adding water according to the proportion of 1:10, and then the metal workpiece is cleaned, so that the cleaning capability is strong, and the detergency of the original cleaning agent at low concentration, low temperature or high temperature can be effectively improved; because the reagent of the invention has negative charge, when the active factors are respectively adsorbed on the surface of the product workpiece and the dirt, the electrostatic repulsion between the surface of the product workpiece and the dirt is increased, the effect of preventing the dirt from being redeposited on the surface of the cleaned product workpiece is achieved, and the surface of the workpiece is cleaner; the method has the advantages that the workpiece is not corroded, oil stains after stretching are not left, the original color of a product is not changed, an oxide layer is not generated, and corrosion spots are not generated; the water-soluble cleaning agent has the advantages of good water solubility, good decontamination, less foam, good biodegradability, environmental protection, safety, no harm to human bodies and low cost.
The invention is further configured to: adding builder, and stirring the liquid in the container until the liquid is in a light-colored translucent state, and foams are generated and float on the liquid surface; adding surfactant, stirring the liquid in the container until the liquid is in a light white state, increasing the water concentration, generating a large amount of foam, and floating on the liquid surface; after the organic silicon defoaming agent is added, the liquid in the container is stirred until the liquid is in a milky white state, most of foam on the surface of the liquid is eliminated, and the generated amount of the foam is very small and floats on the surface of the liquid; when the solubilizer, the corrosion inhibitor, the antirust agent and the complexing agent are added in sequence, after each reagent is added, the mixture is stirred until the liquid in the container is in a milk white state, a small amount of foam floats on the liquid surface, and then the next reagent is added into the container.
By adopting the technical scheme, the components are fully dissolved in the solution reagent, so that the reagent system is more stable, the layering phenomenon is not easy to occur, and the service life of the reagent is prolonged.
In conclusion, the invention has the following beneficial effects:
firstly, the cleaning agent can be prepared by mixing and uniformly stirring the reagents according to the proportion, the preparation method is simple, the preparation efficiency is high, and the production efficiency can be effectively improved;
secondly, the prepared cleaning agent has strong cleaning capability and can effectively improve the detergency of the original cleaning agent at low concentration and low temperature or high temperature; because the reagent of the invention has negative charge, when the active factors are respectively adsorbed on the surface of the product workpiece and the dirt, the electrostatic repulsion between the surface of the product workpiece and the dirt is increased, the effect of preventing the dirt from being redeposited on the surface of the cleaned product workpiece is achieved, and the surface of the workpiece is cleaner;
thirdly, the workpiece is not corroded, oil stains after stretching are not left, the original color of the product is not changed, an oxide layer is not generated, and corrosion spots are not generated; the water-soluble cleaning agent has the advantages of good water solubility, good decontamination, less foam, good biodegradability, environmental protection, safety, no harm to human bodies and low cost.
Detailed Description
The reagents used in this document are all commercially available.
The present invention is described in detail below with reference to tables and examples.
The metal cleaning agent is prepared according to the components and the weight ratio of examples 1-27 and comparative examples 1-14 in the table 1, the following examples are all calculated by 100 parts by weight, and the metal cleaning agent in each example comprises the components in the table, and the balance is water.
Table 1 summarizes the components and the respective weight ratios of the components contained in examples 1 to 27 and comparative examples 1 to 14.
Example 28
A metal cleaner, example 28 differs from example 1 in that the corrosion inhibitor is propylparaben.
Comparative example 15
Comparative example 15 differs from example 1 in that no silicone defoamer was added.
Comparative example 16
Comparative example 16 differs from example 1 in that the potassium alkylolamide phosphate salt antistatic agent was not added.
Example 29
A method of preparing the metal cleaner of example 1, comprising the steps of:
(1) preparing a clean plastic container or measuring cup with the volume of 1000ml and a manual speed-regulating type small stirrer with the speed of 0-1440 rpm;
(2) placing water in a plastic container, wherein the temperature of the water is 25 ℃;
(3) placing the preservative into a plastic container, and stirring for 1 minute by using a stirrer;
(4) placing the alkylolamide potassium phosphate antistatic agent in a plastic container, and stirring for 1 minute by using a stirrer;
(5) putting the sodium tripolyphosphate builder into a plastic container, and stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a light-colored semitransparent state, and a small amount of foam is generated and floats on the surface of the liquid;
(6) putting the industrial sodium silicate builder into a plastic container, and stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a light-colored semitransparent state, and a large amount of foam is generated and floats on the liquid surface;
(7) placing a nonylphenol polyoxyethylene ether surfactant in a plastic container, stirring for 1 minute by using a stirrer, and enabling liquid in the container to be in a light white state, wherein the water concentration is increased, and a large amount of foam is generated and floats on the surface of the liquid;
(8) placing the polyethylene glycol surfactant in a plastic container, and fully stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a light white state, the water concentration is increased, and a large amount of foam is generated and floats on the liquid surface;
(9) placing coconut oil fatty acid diethanolamide nonionic surfactant in a plastic container, stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a milky white state, the water concentration is further increased, and a large amount of foam is generated and floats on the liquid surface;
(10) placing an organic silicon defoaming agent in a plastic container, stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a milky white state, the foam eliminating effect is remarkable, the generated amount of foam is very small, and the foam floats on the surface of the liquid;
(11) putting the solubilizer into a plastic container, stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a milky white state, and a small amount of foam floats on the surface of the liquid;
(12) placing the benzotriazole corrosion inhibitor in a plastic container, stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a milky white state, and a small amount of foam floats on the surface of the liquid;
(13) placing the monoethanolamine antirust agent in a plastic container, stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a milky white state, and a small amount of foam floats on the surface of the liquid;
(14) and (3) putting the disodium ethylene diamine tetraacetate complexing agent into a plastic container, stirring for 1 minute by using a stirrer, wherein the liquid in the container is in a milky white state, and a small amount of foam floats on the surface of the liquid.
Examples 2-28 and comparative examples 1-16 were prepared in the same manner as example 29, wherein the silicone defoamer of comparative example 15 was added in an amount of 0 and the potassium alkylolamide phosphate ester antistatic agent of comparative example 16 was added in an amount of 0.
Application example 1
A method for using the metal cleaning agent prepared in example 1 comprises the steps of diluting the cleaning agent prepared in example 1 by 10 times with water according to parts by weight, placing the cleaning agent in a clean stainless steel ultrasonic tank, stirring, heating to 68 ℃, and placing a metal product soaked with stretching oil and cutting fluid in the tank for ultrasonic cleaning for 2 minutes.
The metal cleaner prepared in examples 2 to 28 and comparative examples 1 to 16 was used in the same manner as in application example 1.
Application comparative example 1
Comparative example 1 was used as a blank test without any treatment of the metal product which was impregnated with the drawing oil and the cutting oil.
Comparative application example 2
Comparative example 2 was used to clean metal products which were saturated with drawing oil and cutting oil with gasoline.
Comparative application example 3
An ultrasonic cleaning agent for an aluminum alloy shell of a mobile phone comprises the following raw materials in percentage by weight: 11-21% of cleaning assistant, 2-5% of secondary alcohol polyoxyethylene ether, 2-5% of AEO-7, 6-10% of secondary alkyl sodium sulfonate, 5-8% of ethoxylated fatty acid methyl ester sodium sulfonate, 2-5% of corrosion inhibitor, 5-10% of penetrating agent JFC and the balance of water.
The preparation method comprises the following steps: (a) adding water with the formula amount into a reaction kettle, and starting a stirrer; (b) sequentially adding a formula amount of cleaning assistant, secondary alcohol polyoxyethylene ether, AEO-7, sodium secondary alkyl sulfonate, sodium ethoxylated fatty acid methyl ester sulfonate, corrosion inhibitor and penetrant JFC into a reaction kettle, stirring and dissolving the added raw materials, then adding the next raw material, and continuously stirring for 1-3 hours after all the raw materials are added; (c) and discharging and packaging after sampling and analyzing are qualified.
The cleaning agent is used for treating metal products which are full of stretching oil and cutting oil according to the using method of application example 1.
Performance testing
First, examples 1 to 28 and comparative examples 1 to 16 were prepared in the same manner as in example 29, and the resulting cleaning agents were subjected to the following performance tests:
1. odor: the cleaning agents prepared in examples 1 to 28 and comparative examples 1 to 16 were free from pungent odor;
2. color: the cleaning agents prepared in examples 1 to 28 and comparative examples 1 to 14 and comparative example 16 were in a milky white state, and a small amount of foam floated on the liquid surface; the cleaning agent of comparative example 15 was in a milky white state, and a large amount of foam floated on the liquid surface;
3. stability: the cleaning agents prepared in the examples 1 to 28 and the comparative examples 1 to 16 are placed in a container and kept stand for 5 days, and the cleaning agents of the examples 1 to 28, the comparative examples 1 to 8, the comparative examples 10 to 11 and the comparative examples 13 to 15 have no precipitation and no delamination; comparative examples 9 and 12 showed significant precipitation, and the solution in comparative example 9 showed significant delamination;
4. dissolution speed: the dissolution rates of examples 1 to 28, comparative examples 1 to 8, comparative examples 10 to 11 and comparative examples 13 to 16 were substantially equal, the dissolution rate of comparative example 12 was slower, the dissolution rate of comparative example 9 was the slowest, the reagents in the solution could not be completely dissolved, and there was a precipitate in the solution.
Analysis of results
The performance test result analysis of the cleaning agent can obtain:
1. as can be seen from examples 1-28, the cleaning agent of the invention has no pungent odor, is harmless to human body, and is environment-friendly and safe;
2. comparing examples 1-28 with comparative example 15, when the weight portion of the silicone defoamer is 0.5-1 part by 100 parts by weight, the defoaming effect is good, the prepared cleaning agent only contains a small amount of foam, the efficacy of the cleaning agent is not affected, when the amount of the defoamer is too small, the defoaming effect is poor, the cleaning agent contains a large amount of foam, the stability and the cleaning effect of the cleaning agent are affected, and when the amount of the silicone defoamer is too large, the excessive silicone defoamer causes waste, improves the preparation cost, and is not beneficial to production;
3. the examples 1-28 show that the cleaning agent prepared according to the weight ratio of the components has good stability, and the cleaning agent does not have precipitation and delamination; comparing examples 1-28 with comparative example 9, it can be seen that when the solubilizer is present in an amount of 0.2-0.8 parts by weight, the solution system is stable, no precipitation and delamination occurs, the service life is long, the dissolution rate of each component is high, and the preparation efficiency is high; when the content of the solubilizer is too small, the solution system is unstable, the layering phenomenon is obvious, the service life of the cleaning agent is shorter than that of the cleaning agent, all components cannot be completely dissolved, and the preparation efficiency is low; when the content of the solubilizer is too much, waste is easily caused, the production cost is increased, and the production is not facilitated. Tests show that the cleaning agent can be successfully prepared within half an hour, and the cleaning agent applied to the comparative example can be successfully prepared within 1-3 hours, so that the cleaning agent has high preparation production efficiency and simple preparation method, and is beneficial to industrial production.
Secondly, the metal products which are soaked with the tensile oil and the cutting oil are subjected to surface cleaning treatment according to the using method of application example 1 in the examples 1 to 28 and the comparative examples 1 to 16 and the application examples 2 to 3, wherein the cleaning agents of the examples 1 to 28, the comparative examples 1 to 16 and the application examples 2 to 3 are used for cleaning 500 metal products respectively, the conditions of the used cleaning agent, the cleaning time, the temperature of the cleaning environment and the like are the same, and the performance of the products after the treatment of the examples 1 to 28, the comparative examples 1 to 16 and the application examples 1 to 3 is tested according to the testing method of the standard JBT4323.2-1999 water-based metal cleaning agent. The test results of example 1, comparative examples 1 to 16 and application comparative examples 1 to 3 are summarized in Table 2.
Table 2 summarizes the results of the performance tests using example 1, comparative examples 1-16, and comparative examples 1-3.
Remarking: a, a large amount of oil stains are formed on the surface; b, oil stains are formed on the surface, the color of the metal surface is not obviously changed, and corrosion spots are avoided; c, the surface has no oil stain, the color of the metal surface has no obvious change, and no corrosion spot exists; d, a small amount of oil stains are formed on the surface, the color of the metal surface is changed, and corrosion spots exist.
The test results for the metal products treated with the cleaning agents of examples 2-28 were substantially the same as the performance test results for the metal products treated with the cleaning agent of example 1.
Tests show that the cleaning agents of examples 1 to 28 have a service life of one month, and the cleaning agent prepared by using comparative example 3 has a service life of 10 days.
Analysis of results
Analyzed by the results of the performance tests of table 2.
1. Comparing examples 1-28 with comparative examples and comparative examples in table 2, it can be seen that the cleaning agent of the present invention for cleaning the surface of a metal workpiece has a cleaning rate (detergency ratio) as high as 99.9%, a cleaning rate higher than that of the comparative examples and comparative examples within the same time, a strong cleaning power, and a high cleaning efficiency.
2. Comparing examples 1-28 with comparative example 11, it can be seen that when 0.2-0.5 weight part of the rust inhibitor is added to examples 1-28, the rust inhibiting property of the surface of the metal workpiece treated by the cleaning agent is good, and the service life of the metal workpiece is prolonged; when the content of the antirust agent is too low, the surface of the metal workpiece treated by the cleaning agent has poor antirust performance, and the metal workpiece is easy to rust, so that the service life of the metal workpiece is shortened.
3. Comparing examples 1-28 with comparative example 14, it can be seen that when 0.2-0.8 weight part of preservative is added in examples 1-28, the corrosion resistance of the surface of the metal workpiece treated by the cleaning agent is good, the surface of the workpiece after the corrosion resistance test has no corrosion white spots, the surface is smooth and clean, the surface of the workpiece has no color change, and the service life of the metal workpiece is prolonged; when the content of the preservative is too low, corrosion white spots appear on the metal surface after the corrosion resistance test, and the color of the surface changes, so that the service life of the metal workpiece is shortened.
4. Comparing examples 1-28 with comparative examples, it can be seen that the cleaning agent prepared by the component ratios of the present invention is used for cleaning the surface of a metal workpiece, the residues of the cleaning agent covering the metal surface after cleaning are easily washed away by water, and no residue is left on the surface of the metal workpiece.
5. As can be seen from comparison between examples 1-28 and comparative example 3, the service life of the cleaning agent in examples 1-28 is as long as 1 month, and compared with 10 days in comparative example 3, the cleaning agent system of the invention is more stable, and is not easy to generate polymerization and precipitation to generate layering, thereby greatly prolonging the service life of the cleaning agent, reducing frequent replacement of the cleaning agent, reducing resource waste and reducing production cost.
In conclusion, the cleaning agent prepared according to the component proportion of the metal cleaning agent provided by the invention is simple in preparation method and high in preparation efficiency, and can effectively improve the production efficiency. The prepared cleaning agent has strong cleaning capability, and can effectively improve the detergency of the original cleaning agent at low concentration and low temperature or high temperature; because the reagent of the invention has negative charge, when the active factors are respectively adsorbed on the surface of the product workpiece and the dirt, the electrostatic repulsion between the surface of the product workpiece and the dirt is increased, the effect of preventing the dirt from being redeposited on the surface of the cleaned product workpiece is achieved, the rinsing performance of the cleaning agent is improved, and the surface of the cleaned workpiece is cleaner; the method has the advantages that the workpiece is not corroded, oil stains after stretching are not left, the original color of a product is not changed, an oxide layer is not generated, and corrosion spots are not generated; the water-soluble cleaning agent has the advantages of good water solubility, good decontamination, less foam, good biodegradability, environmental protection, safety, no harm to human bodies and low cost.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The metal cleaning agent is characterized by comprising the following components in parts by weight: 10-18 parts of builder, 4-15 parts of surfactant, 0.2-0.8 part of solubilizer, 1-1.5 parts of corrosion inhibitor, 0.2-0.5 part of antirust agent, 1-2 parts of complexing agent, 0.2-0.8 part of preservative, 0.5-1.5 parts of antistatic agent and 0.5-1 part of organic silicon defoamer, wherein the builder comprises one or a mixture of more than two of polyphosphate, carbonate, sulfate, metasilicate and citrate, the polyphosphate pyrophosphate, tripolyphosphate, tetraphosphate or hexametaphosphate, the solubilizer is alkenyl succinic anhydride, the complexing agent is one or more of sodium metasilicate, Ethylene Diamine Tetraacetic Acid (EDTA), sodium gluconate, sodium citrate, tetrasodium ethylene diamine tetraacetate and disodium ethylene diamine tetraacetate, and the surfactant comprises nonylphenol polyoxyethylene ether surfactant, Polyethylene glycol surfactant, coconut oil fatty acid diethanolamide nonionic surfactant, wherein the antistatic agent is potassium alkylolamide phosphate.
2. The metal cleaner as claimed in claim 1, wherein the builder comprises the following components in parts by weight: 6-11 parts of tripolyphosphate and 4-7 parts of industrial silicate.
3. The metal cleaner as claimed in claim 1, wherein the surfactant comprises the following components in parts by weight: 2-7 parts of nonylphenol polyoxyethylene ether surfactant, 1-4 parts of polyethylene glycol surfactant and 1-4 parts of coconut oil fatty acid diethanolamide nonionic surfactant.
4. The metal cleaner as claimed in claim 1, wherein the corrosion inhibitor is benzotriazole.
5. The metal cleaner as claimed in claim 1, wherein the rust inhibitor is monoethanolamine.
6. The metal cleaner as claimed in claim 1, wherein the complexing agent is disodium ethylenediaminetetraacetate.
7. The metal cleaner as claimed in claim 1, wherein the preservative is methyl paraben or propyl paraben.
8. A method for preparing the metal cleaner as claimed in any one of claims 1 to 7, wherein 60 to 82 parts by weight of water is put into a container, the water temperature is 24 to 28 ℃, then the antiseptic, the antistatic agent, the builder, the surfactant, the silicone defoamer, the solubilizer, the corrosion inhibitor, the antirust agent and the complexing agent are put into the container according to the corresponding parts by weight and are dissolved uniformly, the next component is added after each component is added and stirred for 1 to 2 minutes, and the liquid in the container is stirred until the liquid is in a light-colored translucent state after the builder is added, and foams are generated and float on the liquid surface; adding surfactant, stirring the liquid in the container until the liquid is in a light white state, increasing the water concentration, generating a large amount of foam, and floating on the liquid surface; after the organic silicon defoaming agent is added, the liquid in the container is stirred until the liquid is in a milky white state, most of foam on the surface of the liquid is eliminated, and the generated amount of the foam is very small and floats on the surface of the liquid; when the solubilizer, the corrosion inhibitor, the antirust agent and the complexing agent are added in sequence, after each reagent is added, the mixture is stirred until the liquid in the container is in a milk white state, a small amount of foam floats on the liquid surface, and then the next reagent is added into the container.
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| CN109328245A (en) * | 2017-05-31 | 2019-02-12 | 天佑科技有限责任公司 | The inorganic agent of the pickling and formation passivating film that are carried out to remove peeling and the iron rust in stainless steel pipes and structures welding position |
| CN109136940B (en) * | 2018-09-07 | 2021-01-15 | 苏州安美润滑科技有限公司 | Environment-friendly high-performance rust-proof low-foam black metal cleaning agent and preparation method thereof |
| CN109440118A (en) * | 2018-11-08 | 2019-03-08 | 洛斯石油（浙江）有限公司 | The formula and production method of the universal water-based metal cleaning agent of novel non-phosphate environmental protection |
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| CN111321418B (en) * | 2018-12-14 | 2022-07-19 | 中国石油大学(北京) | Efficient heavy oil stain cleaning agent, preparation method thereof and heavy oil stain cleaning method |
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| JP2015007213A (en) * | 2013-05-29 | 2015-01-15 | ショーワ株式会社 | Detergent and method for manufacturing the same |
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