CN112553611A - Stainless steel passivator and preparation method and application thereof - Google Patents
Stainless steel passivator and preparation method and application thereof Download PDFInfo
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- CN112553611A CN112553611A CN202011424087.7A CN202011424087A CN112553611A CN 112553611 A CN112553611 A CN 112553611A CN 202011424087 A CN202011424087 A CN 202011424087A CN 112553611 A CN112553611 A CN 112553611A
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- stainless steel
- passivator
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- agent
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 108
- 239000010935 stainless steel Substances 0.000 title claims abstract description 107
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 13
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims abstract description 10
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 24
- 238000002161 passivation Methods 0.000 claims description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000002202 Polyethylene glycol Substances 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000005238 degreasing Methods 0.000 claims description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002125 Sokalan® Polymers 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000004584 polyacrylic acid Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 7
- LJRGBERXYNQPJI-UHFFFAOYSA-M sodium;3-nitrobenzenesulfonate Chemical compound [Na+].[O-][N+](=O)C1=CC=CC(S([O-])(=O)=O)=C1 LJRGBERXYNQPJI-UHFFFAOYSA-M 0.000 claims description 7
- 239000003002 pH adjusting agent Substances 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims description 2
- 229920002521 macromolecule Polymers 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 17
- 238000005260 corrosion Methods 0.000 abstract description 17
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 13
- 238000002791 soaking Methods 0.000 description 10
- 238000005303 weighing Methods 0.000 description 6
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 5
- 150000007524 organic acids Chemical class 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- ONMOULMPIIOVTQ-UHFFFAOYSA-M 3-Nitrobenzene sulphonate Chemical compound [O-][N+](=O)C1=CC=CC(S([O-])(=O)=O)=C1 ONMOULMPIIOVTQ-UHFFFAOYSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229940082615 organic nitrates used in cardiac disease Drugs 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The disclosure belongs to the technical field of stainless steel surface treatment, and particularly provides a stainless steel passivator and a preparation method and application thereof. The stainless steel passivator comprises 1-50g/L of water-soluble polymer, 0.5-20g/L of silane coupling agent, 1-20 g/L of additive, 50-500g/L of stabilizer, a proper amount of pH regulator and the balance of water, and the pH value of the stainless steel passivator is 4-12. The stainless steel passivator can obtain a protective film with good corrosion resistance on the surface of stainless steel, does not reduce the brightness of the surface of the stainless steel, and has little influence on the environment.
Description
Technical Field
The disclosure belongs to the technical field of stainless steel surface treatment, and particularly provides a stainless steel passivator and a preparation method and application thereof.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Stainless steel finds good application in the prior art due to its non-corrosive nature. However, stainless steel still has the defects of corrosion, pitting corrosion, discoloration and the like in a corrosive medium, so that the stainless steel needs to be subjected to protective treatment. In the prior art, nitric acid, hydrofluoric acid, chromic acid and the like are generally adopted for passivation treatment, and the environmental impact is large.
In order to solve this problem, the prior art discloses a chromium-free stainless steel passivator and a passivation method using the same, wherein the passivator uses several organic acids, nitrates and sulfates. The organic acid has certain corrosivity to the stainless steel, reduces stainless steel brightness. Nitrates and sulfates have adverse effects on the environment.
The invention adopts water-soluble polymers, organic additives, silane coupling agents, alcohol and other organic reagents as raw materials, provides the stainless steel organic passivator, can obtain a protective film with good corrosion resistance on the surface of stainless steel, obviously improves the corrosion resistance of the stainless steel, and does not reduce the brightness of the surface of the stainless steel. The components of the invention do not contain organic acid which affects the brightness of the stainless steel, do not contain strong acid, chromate, fluoride, nitrite and other strong corrosive and toxic substances, and have little influence on the environment.
Disclosure of Invention
In one or more embodiments of the present disclosure, a stainless steel passivating agent is provided, which includes 1-50g/L of a water-soluble polymer, 0.5-20g/L of a silane coupling agent, 1-20 g/L of an additive, 50-500g/L of a stabilizer, a proper amount of a pH adjusting agent, and the balance of water, wherein the pH value of the stainless steel passivating agent is 4-12.
In one or some embodiments of the present disclosure, a method for preparing the stainless steel passivator is provided, which includes the following steps:
dissolving a specified amount of water-soluble polymer, a silane coupling agent, an additive and a stabilizer in deionized water respectively, and fully mixing and stirring the mixture until the mixture is uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
In one or some embodiments of the present disclosure, there is provided a stainless steel passivation method, comprising the steps of:
degreasing, cleaning and soaking a stainless steel part in the stainless steel passivator, standing, taking out and drying.
One or some of the above technical solutions have the following advantages or beneficial effects:
1) according to the stainless steel passivating agent, water-soluble polymers, silane coupling agents and other organic compounds are compounded to form a protective film on the surface of stainless steel, so that the corrosion resistance of the stainless steel can be effectively improved, and meanwhile, the components of the stainless steel passivating agent disclosed by the invention do not contain organic acid which influences the brightness of the stainless steel, so that the brightness of the surface of the stainless steel is not reduced. Does not contain strong corrosive and toxic substances such as strong acid, chromate, fluoride, nitrite and the like, and has small environmental pollution.
2) The stainless steel passivator disclosed by the disclosure is simple in preparation method, only needs to weigh and mix all the components, and is suitable for industrial production.
3) The method disclosed by the invention only needs to soak the stainless steel in the passivating agent and adjust the standing and drying time, and is simple in operation method, low in technical requirement on operators and suitable for industrial application.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making any creative effort, shall fall within the protection scope of the disclosure.
In one or more embodiments of the present disclosure, a stainless steel passivating agent is provided, which includes 1-50g/L of a water-soluble polymer, 0.5-20g/L of a silane coupling agent, 1-20 g/L of an additive, 50-500g/L of a stabilizer, a proper amount of a pH adjusting agent, and the balance of water, wherein the pH value of the stainless steel passivating agent is 4-12.
The water-soluble polymer compound of the present disclosure is also referred to as a water-soluble resin or a water-soluble polymer. Can be dissolved or dissolved in water to form an aqueous solution or dispersion. The molecular structure of the water-soluble polymer contains a large number of hydrophilic groups, and the coupling agent is combined with water, additives and other components and Fe of stainless steel3+Form a network structure, and attach to the surface of the stainless steel to achieve the passivation purpose.
Preferably, the water-soluble polymer is at least one of polyethylene glycol, polyacrylic acid and polyvinyl alcohol.
Preferably, the silane coupling agent is at least one of 3-aminopropyltriethoxysilane and 3-glycidoxypropyltrimethoxysilane;
or the stabilizer is at least one of ethanol and glycerol. Ethanol and glycerol are silane hydrolysis stabilizers.
Preferably, the additive is at least one of hydrogen peroxide and sodium m-nitrobenzenesulfonate; the hydrogen peroxide and the sodium m-nitrobenzenesulfonate mainly play a role in accelerating passivation.
Or the pH regulator is acetic acid or ammonia water. In the using process, the pH test is carried out on the mixed passivator, the acid is adjusted, the acetic acid is added, the alkali is adjusted, and the ammonia water is added.
Preferably, the solution comprises 20g/L of polyethylene glycol, 10g/L of polyacrylic acid, 5g/L of polyvinyl alcohol, 15g/L of 3-aminopropyltriethoxysilane, 5g/L of 3-glycidoxypropyltrimethoxysilane, 5g/L of hydrogen peroxide, 5g/L of m-nitrobenzenesulfonate, 400g/L of ethanol and the balance of deionized water, wherein the pH value of the solution is 5.
This is the composition described in example 1 of the present disclosure, which has a good passivation effect on stainless steel.
In one or some embodiments of the present disclosure, a method for preparing the stainless steel passivator is provided, which includes the following steps:
dissolving a specified amount of water-soluble polymer, a silane coupling agent, an additive and a stabilizer in deionized water respectively, and fully mixing and stirring the mixture until the mixture is uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
Preferably, all the raw materials are added and mixed at once at the time of mixing.
The stainless steel passivator disclosed by the disclosure is simple in preparation method, only needs to weigh and mix all the components, and is suitable for industrial production.
In one or some embodiments of the present disclosure, there is provided a stainless steel passivation method, comprising the steps of:
degreasing, cleaning and soaking a stainless steel part in the stainless steel passivator or the product prepared by the preparation method, standing, taking out and drying.
The method disclosed by the invention only needs to soak the stainless steel in the passivating agent and adjust the standing and drying time, and is simple in operation method, low in technical requirement on operators and suitable for industrial application.
Preferably, the standing temperature is 10-60 ℃, and the standing time is 1-30 minutes;
preferably, the drying temperature is 50-180 ℃ after the material is taken out, and the drying time is 5-40 minutes.
In one or some embodiments of the disclosure, the application of the stainless steel passivating agent or the product prepared by the preparation method in stainless steel passivation is provided.
Preferably, the stainless steel passivator or the product prepared by the preparation method can be applied to various stainless steels. The method is particularly suitable for Cr13 type low-chromium stainless steel with low corrosion resistance.
According to the eighth copper sulfate test method in the YY/T0149-2006 stainless steel corrosion resistance test method, the stainless steel sample passivated by the stainless steel passivating agent and the original stainless steel sample not passivated are placed in a copper sulfate solution, the time of the surface starting to appear red copper color is respectively recorded, and the times of the passivated sample to the un-passivated sample for appearing red copper color are calculated to represent the corrosion resistance of the passivated film. The longer the bronzing occurs, the higher the fold increase, indicating the better the passivation effect.
Example 1
The embodiment provides a stainless steel passivation method, which comprises the following steps:
1) preparing a stainless steel passivator:
the stainless steel passivator consists of the following components in concentration (g/L): 20 parts of polyethylene glycol, 10 parts of polyacrylic acid, 15 parts of polyvinyl alcohol 5, 3-aminopropyltriethoxysilane, 5 parts of 3-glycidoxypropyltrimethoxysilane, 5 parts of hydrogen peroxide, 5 parts of sodium m-nitrobenzenesulfonate, 400 parts of ethanol and the balance of deionized water, wherein the pH value of the solution is 5.
Weighing the components, respectively dissolving the components in deionized water, and fully mixing and stirring the components until the components are uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
2) Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 20 ℃, and the treatment time is 10 minutes; taking out the mixture, and drying at 100 ℃ for 40 minutes. The corrosion resistance is improved by 5 times.
Example 2
The embodiment provides a stainless steel passivation method, which comprises the following steps:
1) preparing a stainless steel passivator:
the stainless steel passivator consists of the following components in concentration (g/L): polyethylene glycol 25, 3-aminopropyltriethoxysilane 15, 3-aminopropyltriethoxysilane 5, hydrogen peroxide 5, sodium m-nitrobenzenesulfonate 5, ethanol 400 and the balance of deionized water, wherein the pH value of the solution is 10.
Weighing the components, respectively dissolving the components in deionized water, and fully mixing and stirring the components until the components are uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
2) Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 50 ℃, and the treatment time is 5 minutes; taking out the mixture, and drying at 150 ℃ for 20 minutes. The corrosion resistance is improved by 3 times.
Example 3
The embodiment provides a stainless steel passivation method, which comprises the following steps:
1) preparing a stainless steel passivator:
the stainless steel passivator consists of the following components in concentration (g/L): 20 parts of polyethylene glycol, 10 parts of polyacrylic acid, 15 parts of polyvinyl alcohol 5, 3-aminopropyltriethoxysilane, 5 parts of 3-aminopropyltriethoxysilane, 10 parts of hydrogen peroxide, 400 parts of glycerol and the balance of deionized water, wherein the pH value of the solution is 8.
Weighing the components, respectively dissolving the components in deionized water, and fully mixing and stirring the components until the components are uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
2) Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 10 ℃, and the treatment time is 30 minutes; taking out the mixture, and drying at 80 ℃ for 40 minutes. The corrosion resistance is improved by 4 times.
Example 4
The embodiment provides a stainless steel passivation method, which comprises the following steps:
1) preparing a stainless steel passivator:
the stainless steel passivator consists of the following components in concentration (g/L): polyethylene glycol 1, polyacrylic acid 1, polyvinyl alcohol 1, 3-aminopropyltriethoxysilane 15, 3-aminopropyltriethoxysilane 5, hydrogen peroxide 20, glycerol 500, and the balance of deionized water, wherein the pH value of the solution is 8.
Weighing the components, respectively dissolving the components in deionized water, and fully mixing and stirring the components until the components are uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
3) Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 10 ℃, and the treatment time is 30 minutes; taking out the mixture, and drying at 80 ℃ for 40 minutes. The corrosion resistance is improved by 3 times.
Example 5
The embodiment provides a stainless steel passivation method, which comprises the following steps:
1) preparing a stainless steel passivator:
the stainless steel passivator consists of the following components in concentration (g/L): 20 parts of polyethylene glycol, 10 parts of polyacrylic acid, 10 parts of polyvinyl alcohol, 1 part of 3-aminopropyltriethoxysilane, 1 part of hydrogen peroxide, 50 parts of glycerol and the balance of deionized water, wherein the pH value of the solution is 8.
Weighing the components, respectively dissolving the components in deionized water, and fully mixing and stirring the components until the components are uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
2) Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 10 ℃, and the treatment time is 30 minutes; taking out the mixture, and drying at 80 ℃ for 40 minutes. The corrosion resistance is improved by 3 times.
Example 6
The embodiment provides a stainless steel passivation method, which comprises the following steps:
1) preparing a stainless steel passivator:
the stainless steel passivator consists of the following components in concentration (g/L): 20 parts of polyethylene glycol, 5 parts of polyacrylic acid, 10 parts of polyvinyl alcohol, 3-aminopropyltriethoxysilane, 2 parts of 3-aminopropyltriethoxysilane, 5 parts of hydrogen peroxide, 1 part of glycerol, and the balance of deionized water, wherein the pH value of the solution is 8.
Weighing the components, respectively dissolving the components in deionized water, and fully mixing and stirring the components until the components are uniform; adjusting to a specified value by using a pH regulator, and adding water to a specified volume.
3) Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 10 ℃, and the treatment time is 30 minutes; taking out the mixture, and drying at 80 ℃ for 40 minutes. The corrosion resistance is improved by 3 times.
Comparative example 1
This example provides a stainless steel passivation method, which differs from example 1 in that the stainless steel passivator consists of the following components in concentration (g/L): 20 parts of polyethylene glycol, 20 parts of polyacrylic acid, 20 parts of polyvinyl alcohol, 15 parts of 3-aminopropyltriethoxysilane, 10 parts of 3-glycidoxypropyltrimethoxysilane, 5 parts of hydrogen peroxide, 5 parts of sodium m-nitrobenzenesulfonate, 400 parts of ethanol and the balance of deionized water, wherein the pH value of the solution is 5.
Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 10 ℃, and the treatment time is 30 minutes; taking out the mixture, and drying at 80 ℃ for 40 minutes. The corrosion resistance was not improved.
Comparative example 2
This example provides a stainless steel passivation method, which differs from example 1 in that the stainless steel passivator consists of the following components in concentration (g/L): 20 parts of polyethylene glycol, 10 parts of polyacrylic acid, 15 parts of polyvinyl alcohol 5, 3-aminopropyltriethoxysilane, 5 parts of 3-glycidoxypropyltrimethoxysilane, 20 parts of hydrogen peroxide, 10 parts of sodium m-nitrobenzenesulfonate, 400 parts of ethanol and the balance of deionized water, wherein the pH value of the solution is 5.
Degreasing, cleaning and soaking stainless steel in the stainless steel passivator, wherein the treatment temperature is 10 ℃, and the treatment time is 30 minutes; taking out the mixture, and drying at 80 ℃ for 40 minutes. The corrosion resistance is reduced to half of the original one.
The disclosure of the present invention is not limited to the specific embodiments, but rather to the specific embodiments, the disclosure is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
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| WO2008041976A2 (en) * | 2006-09-29 | 2008-04-10 | Momentive Performance Materials Inc. | Storage stable composition of partial and/or complete condensate of hydrolyzable organofunctional silane |
| CN101289741A (en) * | 2007-04-18 | 2008-10-22 | 宝山钢铁股份有限公司 | Chromium-free passivation solution for surface treatment of electro-galvanized steel sheet and application method thereof |
| CN102070927A (en) * | 2011-01-22 | 2011-05-25 | 安徽工业大学 | Water-based surface treatment agent for color coating pretreatment of galvanized plates |
| CN107460465A (en) * | 2017-08-21 | 2017-12-12 | 佛山市顺德区美硕金属表面技术有限公司 | Silane finish and the method for preparing silane finish |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008041976A2 (en) * | 2006-09-29 | 2008-04-10 | Momentive Performance Materials Inc. | Storage stable composition of partial and/or complete condensate of hydrolyzable organofunctional silane |
| CN101289741A (en) * | 2007-04-18 | 2008-10-22 | 宝山钢铁股份有限公司 | Chromium-free passivation solution for surface treatment of electro-galvanized steel sheet and application method thereof |
| CN102070927A (en) * | 2011-01-22 | 2011-05-25 | 安徽工业大学 | Water-based surface treatment agent for color coating pretreatment of galvanized plates |
| CN107460465A (en) * | 2017-08-21 | 2017-12-12 | 佛山市顺德区美硕金属表面技术有限公司 | Silane finish and the method for preparing silane finish |
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