CN117431545A - Water-based cleaning agent composition used before PVD of stainless steel/aluminum composite material and cleaning process based on water-based cleaning agent composition - Google Patents
Water-based cleaning agent composition used before PVD of stainless steel/aluminum composite material and cleaning process based on water-based cleaning agent composition Download PDFInfo
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- CN117431545A CN117431545A CN202311276618.6A CN202311276618A CN117431545A CN 117431545 A CN117431545 A CN 117431545A CN 202311276618 A CN202311276618 A CN 202311276618A CN 117431545 A CN117431545 A CN 117431545A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000004140 cleaning Methods 0.000 title claims abstract description 53
- 239000010935 stainless steel Substances 0.000 title claims abstract description 41
- 239000000203 mixture Substances 0.000 title claims abstract description 40
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 38
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 19
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 9
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 27
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 21
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- 238000005237 degreasing agent Methods 0.000 claims description 15
- 239000013527 degreasing agent Substances 0.000 claims description 15
- 238000010790 dilution Methods 0.000 claims description 11
- 239000012895 dilution Substances 0.000 claims description 11
- LMHAGAHDHRQIMB-UHFFFAOYSA-N 1,2-dichloro-1,2,3,3,4,4-hexafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(Cl)C1(F)Cl LMHAGAHDHRQIMB-UHFFFAOYSA-N 0.000 claims description 8
- 150000002191 fatty alcohols Chemical class 0.000 claims description 8
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 8
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 8
- 229920005862 polyol Polymers 0.000 claims description 8
- -1 polyol phosphonate Chemical class 0.000 claims description 8
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 8
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 8
- 229940061605 tetrasodium glutamate diacetate Drugs 0.000 claims description 8
- UZVUJVFQFNHRSY-OUTKXMMCSA-J tetrasodium;(2s)-2-[bis(carboxylatomethyl)amino]pentanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC[C@@H](C([O-])=O)N(CC([O-])=O)CC([O-])=O UZVUJVFQFNHRSY-OUTKXMMCSA-J 0.000 claims description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 7
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 7
- 239000011976 maleic acid Substances 0.000 claims description 7
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229940045998 sodium isethionate Drugs 0.000 claims description 4
- LADXKQRVAFSPTR-UHFFFAOYSA-M sodium;2-hydroxyethanesulfonate Chemical compound [Na+].OCCS([O-])(=O)=O LADXKQRVAFSPTR-UHFFFAOYSA-M 0.000 claims description 4
- SUMDYPCJJOFFON-UHFFFAOYSA-N isethionic acid Chemical compound OCCS(O)(=O)=O SUMDYPCJJOFFON-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000003749 cleanliness Effects 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 4
- 238000009776 industrial production Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
- C23G1/19—Iron or steel
-
- 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
- C23G1/22—Light metals
Abstract
The invention belongs to the technical field of cleaning before PVD coating, and discloses a water-based cleaning agent composition used before PVD of a stainless steel/aluminum composite material and a cleaning process based on the water-based cleaning agent composition. The water-based cleaning agent composition comprises an oil removing agent A, a neutralizing agent B and a rinsing agent C. The invention also provides a cleaning process before PVD coating of the stainless steel/aluminum composite material based on the water-based cleaning agent composition, which adopts an ultrasonic cleaning line for cleaning and sequentially comprises three sections of an oil removing section, a neutralization section and a rinsing section. The water-based cleaning agent composition disclosed by the invention has the advantages that the three components are reasonably matched, so that the water-based cleaning agent composition is suitable for cleaning most metals before PVD, is especially suitable for cleaning stainless steel/aluminum composite materials before PVD, meets the cleaning requirement before PVD coating of the stainless steel/aluminum composite materials, and does not corrode a base material; the PVD coating yield of the stainless steel/aluminum composite material cleaned by the water-based cleaning agent composition can reach more than 94%.
Description
Technical Field
The invention belongs to the technical field of cleaning before PVD coating, and particularly relates to a water-based cleaning agent composition used before PVD of a stainless steel/aluminum composite material and a cleaning process based on the water-based cleaning agent composition.
Background
With the update of electronic products such as smart phones, single stainless steel or aluminum alloy which is commonly used in early stages is used as a main manufacturing raw material, and the single stainless steel or aluminum alloy is gradually replaced by stainless steel/aluminum composite materials, so that the single stainless steel or aluminum alloy becomes a main new material for manufacturing electronic products. The composite material has the characteristics of high strength, corrosion resistance, texture and beautiful appearance of the stainless steel material, and simultaneously has the characteristics of high heat dissipation speed, portability, low signal loss and the like of the aluminum alloy material.
At present, the conventional stainless steel pre-PVD cleaning process generally adopts strong alkali or strong acid cleaning agent, so that impurities such as dirt, oxide skin and the like on the surface of the stainless steel can be removed rapidly, and the cleanliness of the surface of the stainless steel can reach the PVD coating requirement. However, as a stainless steel/aluminum composite material, strong alkali or strong acid cleaning agents cause corrosion of aluminum alloys, resulting in non-use.
CN 112030100A patent discloses a surface treatment process before PVD coating of copper-aluminum material, which mainly comprises pre-cleaning, wiping cleaning and plasma cleaning. The process uses a large amount of low-boiling point low-flash point organic solvents, such as isopropanol, aviation kerosene, n-propanol, ethanol and the like, which easily cause potential safety hazards, and the long-time contact brings harm to the body. CN 105970153A patent discloses a high-precision cleaning process for PVD coated parts, which comprises water washing 1- & gt air washing 1- & gt water washing 2- & gt water washing 3- & gt water washing 4- & gt air washing 2- & gt water washing 5- & gt saponification- & gt hydrocarbon cleaning- & gt steam drying and plasma cleaning. The cleaning process is used for cleaning under a large amount of vacuum conditions, the equipment requirement is high, the cleaning process becomes more complicated due to the alternation of multi-stage air cleaning and water cleaning, the cleaning efficiency is low, and meanwhile, the process is not suitable for cleaning the stainless steel/aluminum composite material by using a large amount of alkaline cleaning agent.
At present, no cleaner which is low in cost, safe and environment-friendly, can meet the cleanliness requirement of a stainless steel/aluminum composite coating film and is safe and corrosion-free to stainless steel and aluminum materials is not seen in the market.
Disclosure of Invention
To overcome the above-described drawbacks and deficiencies of the prior art, a primary object of the present invention is to provide a water-based cleaning composition for use prior to PVD of stainless steel/aluminum composites.
The PVD coating yield of the stainless steel/aluminum composite material cleaned by the water-based cleaning agent composition can reach more than 94%.
The invention also aims at providing a preparation method of the water-based cleaning agent composition.
The invention further aims to provide a cleaning process before PVD coating of the stainless steel/aluminum composite material based on the water-based cleaning agent composition.
The cleaning process based on the water-based cleaning agent composition has simple working procedures, small dosage of the cleaning agent, environment-friendly and safe components and no pollution to the environment.
The aim of the invention is achieved by the following scheme:
a water-based cleaning agent composition used before PVD of a stainless steel/aluminum composite material comprises an oil removing agent A, a neutralizing agent B and a rinsing agent C.
Further, the degreasing agent A comprises the following components in percentage by mass: 6-10% of C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether, 4-8% of cocoyl hydroxyethyl sulfonate, 4-7% of 2-hydroxyphosphonoacetic acid, 3-5% of tetrasodium glutamate diacetate, 1-3% of sodium hydroxide and the balance of water.
Further, the pH of the degreasing agent A is 8-9.
Further, the neutralizer B comprises the following components in percentage by mass: 3-8% of cocoamidopropyl hydroxysulfobetaine, 3-5% of polyol phosphonate, 1-3% of sodium dihydrogen phosphate and the balance of water.
Further, the rinse agent C comprises the following components in percentage by mass: 3-5% of diethylene glycol, 2-4% of maleic acid and the balance of water.
The invention also provides a preparation method of the water-based cleaning agent composition, which is obtained by respectively mixing the components of the oil removing agent A, the neutralizing agent B and the rinsing agent C according to a proportion and uniformly stirring.
Further, the degreasing agent A can be prepared by the following steps: adding 2-hydroxyphosphonoacetic acid and tetrasodium glutamate diacetate into water according to a certain proportion, and uniformly stirring; and adding C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether and cocoyl sodium isethionate, stirring uniformly, adding sodium hydroxide, and stirring uniformly to obtain the oil remover A.
Still further, the pH value of the degreasing agent A is 8-9 after sodium hydroxide is added.
Further, the neutralizer B can be prepared by the following steps: adding polyol phosphonate and sodium dihydrogen phosphate into water according to a certain proportion, and uniformly stirring; and adding cocoamidopropyl hydroxysulfobetaine, and stirring uniformly to obtain the neutralizer B.
Further, the rinse agent C can be prepared by the following steps: diethylene glycol, maleic acid and water are mixed according to a certain proportion and stirred uniformly to obtain the rinse agent C.
The above stirring can be the same or different, and each stirring is carried out for 10-20min.
The water-based cleaning agent composition comprises an oil removing agent A, a neutralizing agent B and a rinsing agent C. The three components are reasonably matched, so that the cleaning requirement before PVD coating of the stainless steel/aluminum composite material is met, and the corrosion to a base material is avoided; and each component is safe and environment-friendly, the use process is simple, and the industrial production requirement is met.
The oil removing agent A in the components can effectively remove the residual dirt, fingerprint, dust, watermark and other foreign matters on the surface of the workpiece, and improve the cleanliness of the surface of the workpiece. The chelating effect of tetra sodium glutamate diacetate is utilized to wet the surface of a workpiece, the stripping and removing effects on grease dirt are enhanced through the combination of nonionic surface active C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether and anionic surface active coco-hydroxyethyl sodium sulfonate, the chelating and dispersing effects of 2-hydroxyphosphonoacetic acid are matched to improve the capability of removing particle dirt, meanwhile, the aluminum has good corrosion inhibition effect, the pH value of the formula is adjusted to 8-9 by using sodium hydroxide to further improve the cleaning dirt effect of the formula, and meanwhile, the stainless steel and aluminum are not easy to corrode and damage.
The neutralizer B in the components can effectively neutralize and remove the oil removal agent remained on the surface and in the pores of the workpiece, and prevent the agent from remaining on the pores and the surface of the workpiece. Residual dirt in the pores of the workpiece and the medicament can be quickly neutralized and removed by utilizing the quick permeation of the cocamidopropyl hydroxysulfobetaine and the dispersion of the polyol phosphonate, and the sodium dihydrogen phosphate can play a good role in buffering, so that the corrosion of the workpiece caused by the fluctuation of the pH of the medicament is avoided.
The rinsing agent C in the component can further rinse the residual agent on the surface of the workpiece, and simultaneously wets the surface of the workpiece to promote the hydrophilicity of the surface of the workpiece, thereby avoiding the generation of defects such as watermarks and the like. Wherein diethylene glycol plays a good role in water retention, prevents medicament flow marks from being generated during workpiece transfer, and improves the hydrophilic effect of the workpiece surface by matching with maleic acid.
The PVD coating yield of the stainless steel/aluminum composite material cleaned by the water-based cleaning agent composition can reach more than 94%.
Furthermore, the invention also provides a cleaning process before PVD coating of the stainless steel/aluminum composite material based on the water-based cleaning agent composition, which adopts an ultrasonic cleaning line for cleaning and sequentially comprises the following three working sections:
(1) Oil removal section: the deoiling agent A with the mass concentration of 5-15% after dilution is used, and the use temperature is 70-80 ℃;
(2) And (3) a neutralization section: the neutralizing agent B with the mass concentration of 10-20% after dilution is used, and the use temperature is 50-60 ℃;
(3) Rinsing section: the rinsing agent C with the mass concentration of 3-8% after dilution is used, and the use temperature is 50-60 ℃.
Further, the cleaning time of each working section is 10-30min respectively, which are the same or different.
Further, the dilution is carried out by water.
Furthermore, after the working sections are treated, water can be used for cleaning and then the next working section treatment is carried out, so that the residual medicament and dirt on the surface of the workpiece and in the pores can be effectively removed, and the cleanliness of the surface of the workpiece is ensured.
For example, the workpiece treated in the oil removing working section can be ultrasonically rinsed by pure water and then transferred to the neutralization working section; the temperature of the pure water can be 45-55deg.C, and the ultrasonic rinsing time can be 10-30min.
For another example, the workpiece treated in the neutralization section can be sprayed by pure water and then transferred to the rinsing section; the pure water temperature is room temperature, and the spraying time is 10-20min.
Furthermore, the workpiece processed in the rinsing working section can be subjected to ultrasonic rinsing by pure water and then is baked after being slowly pulled. The pure water temperature is room temperature, and the ultrasonic rinsing time is 20-40min.
The cleaning process based on the water-based cleaning agent composition has simple working procedures, small dosage of the cleaning agent, environment-friendly and safe components and no pollution to the environment.
The water-based cleaning agent composition is suitable for cleaning most metals before PVD, especially suitable for cleaning stainless steel/aluminum composite materials before PVD, and is safe and corrosion-free to stainless steel/aluminum alloy substrates. The PVD coating yield of the stainless steel/aluminum composite material cleaned by the water-based cleaning agent composition can reach more than 94%.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto. The materials referred to in the examples below are available commercially unless otherwise specified. The method is conventional unless otherwise specified.
In one embodiment, a water-based cleaning composition for use prior to PVD of a stainless steel/aluminum composite includes a degreasing agent A, a neutralizing agent B, and a rinsing agent C.
In some preferred embodiments, the degreasing agent a comprises the following components in mass percent: 6-10% of C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether, 4-8% of cocoyl hydroxyethyl sulfonate, 4-7% of 2-hydroxyphosphonoacetic acid, 3-5% of tetrasodium glutamate diacetate, 1-3% of sodium hydroxide and the balance of water.
In some preferred embodiments, the degreasing agent a has a pH of 8-9.
In some preferred embodiments, the neutralizing agent B comprises the following components in mass percent: 3-8% of cocoamidopropyl hydroxysulfobetaine, 3-5% of polyol phosphonate, 1-3% of sodium dihydrogen phosphate and the balance of water.
In some preferred embodiments, the rinse agent C comprises the following components in mass percent: 3-5% of diethylene glycol, 2-4% of maleic acid and the balance of water.
In another embodiment, the preparation method of the water-based cleaning agent composition is characterized in that the components of the oil removing agent A, the neutralizing agent B and the rinsing agent C are mixed according to a certain proportion and uniformly stirred.
In some preferred embodiments, the degreasing agent a may be prepared by the steps of: adding 2-hydroxyphosphonoacetic acid and tetrasodium glutamate diacetate into water according to a certain proportion, and uniformly stirring; and adding C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether and cocoyl sodium isethionate, stirring uniformly, adding sodium hydroxide, and stirring uniformly to obtain the oil remover A.
In some preferred embodiments, the degreasing agent a has a pH of 8-9 after adding sodium hydroxide.
In some preferred embodiments, the neutralizing agent B is prepared by the steps of: adding polyol phosphonate and sodium dihydrogen phosphate into water according to a certain proportion, and uniformly stirring; and adding cocoamidopropyl hydroxysulfobetaine, and stirring uniformly to obtain the neutralizer B.
In some preferred embodiments, the rinse agent C is prepared by the steps of: diethylene glycol, maleic acid and water are mixed according to a certain proportion and stirred uniformly to obtain the rinse agent C.
In some preferred embodiments, the above-described stirring may be the same or different and each stirring may be performed for 10-20min.
In some preferred embodiments, the degreasing agent a is prepared by the steps of: adding 2-hydroxyphosphonoacetic acid and tetra sodium glutamate diacetate into water according to a certain proportion, and stirring for 10-20min at normal temperature and normal pressure; sequentially adding C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether and cocoyl sodium isethionate, stirring for 5-10min each time when one component is added, and adding the next component until all components are added and dissolved; and adding sodium hydroxide to adjust the pH to 8-9, and continuously stirring for 10-20min to obtain the degreasing agent A.
In some preferred embodiments, the neutralizing agent B is prepared by the steps of: adding polyol phosphonate and sodium dihydrogen phosphate into water according to a certain proportion, and stirring at normal temperature and normal pressure for 10-20min; and adding cocamidopropyl hydroxysulfobetaine and stirring for 10-20min to obtain the neutralizer B.
In some preferred embodiments, the rinse agent C is prepared by the steps of: mixing diethylene glycol, maleic acid and water according to a certain proportion, and stirring at normal temperature and normal pressure for 10-20min.
The water-based cleaning agent composition comprises an oil removing agent A, a neutralizing agent B and a rinsing agent C. The three components are reasonably matched, so that the cleaning requirement before PVD coating of the stainless steel/aluminum composite material is met, and the corrosion to a base material is avoided; and each component is safe and environment-friendly, the use process is simple, and the industrial production requirement is met.
The PVD coating yield of the stainless steel/aluminum composite material cleaned by the water-based cleaning agent composition can reach more than 94%.
In another embodiment, the cleaning process before PVD coating of the stainless steel/aluminum composite material based on the water-based cleaning agent composition adopts an ultrasonic cleaning line for cleaning, and the cleaning process sequentially comprises the following three working sections:
(1) Oil removal section: the deoiling agent A with the mass concentration of 5-15% after dilution is used, and the use temperature is 70-80 ℃;
(2) And (3) a neutralization section: the neutralizing agent B with the mass concentration of 10-20% after dilution is used, and the use temperature is 50-60 ℃;
(3) Rinsing section: the rinsing agent C with the mass concentration of 3-8% after dilution is used, and the use temperature is 50-60 ℃.
In some preferred embodiments, the cleaning time of each station is 10-30min, respectively, which may be the same or different.
In some preferred embodiments, dilution is performed with water.
In some preferred embodiments, after each working section is treated, water is used for cleaning and then the next working section is used for treating, so that the residual medicines and dirt on the surface of the workpiece and in the pores can be effectively removed, and the cleanliness of the surface of the workpiece is ensured.
In some preferred embodiments, the workpiece treated by the oil removal section can be transferred to the neutralization section after being ultrasonically rinsed by pure water; the temperature of the pure water can be 45-55deg.C, and the ultrasonic rinsing time can be 10-30min.
In some preferred embodiments, the work piece after the neutralization section treatment can be sprayed with pure water and then transferred to the rinsing section; the pure water temperature is room temperature, and the spraying time is 10-20min.
In some preferred embodiments, the work piece after the rinse station treatment may be transferred to a slow pull post bake after ultrasonic rinsing with pure water. The pure water temperature is room temperature, and the ultrasonic rinsing time is 20-40min.
Examples data relating to the cleaning compositions are shown in Table 1 below (units: wt.%): a represents an oil removing agent, B represents a neutralizing agent, and C represents a rinsing agent. The pH of degreasing agent A in examples 1-3 was 8-9.
TABLE 1
The above examples were all carried out using the following cleaning process:
(1) And in the oil removing section, an oil removing agent A with the mass concentration of 10% is used, the temperature is 75+/-5 ℃, ultrasonic cleaning is carried out for 20 minutes, pure water at 50+/-5 ℃ is adopted for ultrasonic rinsing for 20 minutes, and the oil removing section is transferred to the neutralization section.
(2) And a neutralizing section, namely using a neutralizing agent B with the mass concentration of 15%, adopting ultrasonic cleaning for 15 minutes at the temperature of 55+/-5 ℃, spraying pure water at room temperature for 15 minutes, and transferring to a rinsing section.
(3) And in the rinsing section, a rinsing agent C with the mass concentration of 5% is used, the temperature is 55+/-5 ℃, ultrasonic cleaning is carried out for 10 minutes, the rinsing agent C is subjected to ultrasonic rinsing for 30 minutes through pure water at room temperature, and the baking is carried out after slow pulling.
The post PVD yields and aluminum profiles for the workpieces of examples 1-3 were tested and are shown in Table 2.
TABLE 2
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| PVD coating yield | 94.91％ | 96.27％ | 95.73％ | 94.63％ | 91.52％ |
| Dirt causes bad coating film | 2.85％ | 1.31％ | 1.75％ | 2.64％ | 4.35％ |
| The watermark causes poor coating film | 1.15％ | 1.22％ | 1.47％ | 1.56％ | 2.26％ |
| Others cause poor coating | 1.09％ | 1.20％ | 1.05％ | 1.17％ | 1.87％ |
| Aluminum appearance rating | Level 0 | Level 0 | Level 0 | Level 2 | Level 0 |
| Stainless steel appearance rating | Level 0 | Level 0 | Level 0 | Level 0 | Level 0 |
* Reference GB/T35759-2017
As can be seen from table 2, the water-based cleaning agent composition of the invention comprises the degreasing agent a, the neutralizing agent B and the rinsing agent C, and the three components are reasonably matched, so that the cleaning requirement before PVD coating of the stainless steel/aluminum composite material is met, and the substrate is not corroded; and each component is safe and environment-friendly, the use process is simple, and the industrial production requirement is met. The PVD coating yield of the stainless steel/aluminum composite material cleaned by the water-based cleaning agent composition can reach more than 94%.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The water-based cleaning agent composition used before PVD of the stainless steel/aluminum composite material is characterized by comprising an oil removing agent A, a neutralizing agent B and a rinsing agent C;
the degreasing agent A comprises the following components in percentage by mass: 6-10% of C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether, 4-8% of cocoyl hydroxyethyl sulfonate, 4-7% of 2-hydroxyphosphonoacetic acid, 3-5% of tetrasodium glutamate diacetate, 1-3% of sodium hydroxide and the balance of water.
2. The aqueous-based cleaning composition of claim 1, wherein: the neutralizer B comprises the following components in percentage by mass: 3-8% of cocoamidopropyl hydroxysulfobetaine, 3-5% of polyol phosphonate, 1-3% of sodium dihydrogen phosphate and the balance of water.
3. The aqueous-based cleaning composition of claim 1, wherein: the rinse agent C comprises the following components in percentage by mass: 3-5% of diethylene glycol, 2-4% of maleic acid and the balance of water.
4. The aqueous-based cleaning composition of claim 1, wherein: the pH value of the oil removing agent A is 8-9.
5. A method of preparing the aqueous-based cleaning composition of any one of claims 1-4, comprising: the oil removing agent A, the neutralizing agent B and the rinsing agent C are respectively mixed according to the proportion and uniformly stirred to obtain the oil removing agent.
6. The method of manufacturing according to claim 5, wherein: the degreasing agent A is prepared by the following steps: adding 2-hydroxyphosphonoacetic acid and tetrasodium glutamate diacetate into water according to a certain proportion, and uniformly stirring; and adding C10-16 fatty alcohol polyoxyethylene polyoxypropylene ether and cocoyl sodium isethionate, stirring uniformly, adding sodium hydroxide, and stirring uniformly to obtain the oil remover A.
7. The method of manufacturing according to claim 5, wherein: the neutralizer B is prepared by the following steps: adding polyol phosphonate and sodium dihydrogen phosphate into water according to a certain proportion, and uniformly stirring; and adding cocoamidopropyl hydroxysulfobetaine, and stirring uniformly to obtain the neutralizer B.
8. The method of any one of claims 5-7, wherein: the stirring is uniformly the same or different and is respectively carried out for 10-20min.
9. A cleaning process before PVD coating of a stainless steel/aluminum composite based on a water-based cleaning agent composition according to any of claims 1-4, characterized in that it is cleaned by means of an ultrasonic cleaning line, comprising in sequence the following three stations:
(1) Oil removal section: the deoiling agent A with the mass concentration of 5-15% after dilution is used, and the use temperature is 70-80 ℃;
(2) And (3) a neutralization section: the neutralizing agent B with the mass concentration of 10-20% after dilution is used, and the use temperature is 50-60 ℃;
(3) Rinsing section: the rinsing agent C with the mass concentration of 3-8% after dilution is used, and the use temperature is 50-60 ℃.
10. The cleaning process before PVD coating of the stainless steel/aluminum composite material according to claim 9, wherein: the cleaning time of each working section is 10-30min respectively, which are the same or different.
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| CN202311276618.6A CN117431545A (en) | 2023-10-05 | 2023-10-05 | Water-based cleaning agent composition used before PVD of stainless steel/aluminum composite material and cleaning process based on water-based cleaning agent composition |
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