CN110284132A - The chromium-free zinc-plated Toner of one kind and its application method - Google Patents
The chromium-free zinc-plated Toner of one kind and its application method Download PDFInfo
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- CN110284132A CN110284132A CN201910596966.9A CN201910596966A CN110284132A CN 110284132 A CN110284132 A CN 110284132A CN 201910596966 A CN201910596966 A CN 201910596966A CN 110284132 A CN110284132 A CN 110284132A
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- zinc
- toner
- plated
- chromium
- free zinc
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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
- 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
- C23C22/40—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 containing molybdates, tungstates or vanadates
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- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a kind of chromium-free zinc-plated Toners, including following component: sodium molybdate, malonic acid, sodium citrate, potassium permanganate, neopelex, titanium oxide, iron magnesium hydrotalcite and deionized water.The zinc-plated Toner is in such a way that passivation+colouring settles at one go, and wherein color component of the iron magnesium hydrotalcite as Toner, has the advantages that first is that red is vivid under the oxidation of potassium permanganate;Second is that its special layer structure, the color difference between different batches is smaller;Third is that titanium dioxide, which is added, can promote reflecting properties, glossiness and heavy feeling are improved;Chromium-free zinc-plated Toner of the invention can significantly improve the corrosion resistance of zinc-plated steel product, reach the requirement of low-toxicity green environmental protection.
Description
Technical field
The present invention relates to zinc-plated Toner technical fields, more particularly to a kind of chromium-free zinc-plated Toner and its user
Method.
Background technique
Metallic zinc is not only highly stable in dry air, and corrosion is generated to base in moist aerial or oxygenated water
Body has the insoluble corrosion product of protective effect, can enter in crack and the hole of coating, and then prevent the corruption of metallic zinc
Erosion, to reduce the corrosion rate of metallic zinc, therefore zinc is considered to have compared with high chemical stability and excellent protective effect
Metal.Protectiveness coating of the zinc coat as steel product not only can form mechanical protection to steel substrate, but also due to it
Stable potential is more negative, and zinc coat can also provide effective electrochemical protection, so zinc-plated occupy in whole surface process field
Extremely huge production capacity specific gravity.
In order to further increase the stability of zinc coat, usually all zinc coat is carried out at subsequent passivation in industrial production
Reason generates the compact film that a thin layer has more high stability in Several Thiourea Derivatives on Zinc Plate Surface.Zinc coat is after transpassivation, stability
It can greatly improve, corrosion current can even reduce by 1~2 order of magnitude, therefore the protective performance in corrosive medium can be with
It is significantly improved.Industrially in order to make zinc coat obtain good corrosion resistance and appearance after passivation, usually to zinc coat
Using sexavalence chromium passivating.In Cr VI passivating solution, zinc dissolves, and Cr VI restores, while coating/passivating solution interface
PH value increase, therefore Cr VI-trivalent chromium flexible-divalent zinc complexes passivating film can be formed in Several Thiourea Derivatives on Zinc Plate Surface, be passivated
Film can form fine and close rigid passivating film, be obviously improved corrosion resistance after high temperature ageing processing.Moreover, due to
The difference of Cr VI and trivalent chromium ratio in passivating film, passivating film can also show different colors, such as blue and white, black
Color, green black colour etc. can be obviously improved the appearance of zinc coat.
But with the raising of environmental requirement, the greenization of surface treatment process is increasingly important.The chromium-free deactivation of zinc coat
No matter obtained passivating film all can not even compare from aesthetics or stability with sexavalence chromium passivation film.It can so developing
It is significant for the environmental protection of field of surface treatment to obtain beauty, stable galvanized layer chromium-free color method, also to green
Industrial realize has guiding significance.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of chromium-free zinc-plated Toner and its uses
Method.
Technical scheme is as follows:
A kind of chromium-free zinc-plated Toner, including following component: sodium molybdate, malonic acid, sodium citrate, potassium permanganate,
Neopelex, titanium oxide, iron magnesium hydrotalcite and deionized water.
Preferably, the chromium-free zinc-plated Toner, the ingredient including following weight percent: sodium molybdate 6-
10%, malonic acid 1-3%, sodium citrate 1-3%, potassium permanganate 5-8%, neopelex 2-4%, titanium dioxide 1-
3%, iron magnesium hydrotalcite 5-12% and deionized water.
Preferably, the application method of the chromium-free zinc-plated Toner, comprising the following steps:
A, after mixing iron magnesium hydrotalcite solid and titanium dioxide solids, 3-5 times of deionized water is added, is ground using wet process
Mill crosses 800 meshes;Oversize is ground repeatedly, until all filterings, then homogeneous obtains suspension A;
B, sodium molybdate, malonic acid, sodium citrate, potassium permanganate, neopelex are dissolved in remaining water, obtained
Solution B;
C, in use, high speed homogenization is heated to 80-100 DEG C, obtains Toner after suspension A and solution B are mixed;
D, zinc-plated steel product is gone out into light, zinc-plated steel product is then immersed into Toner and handles 20-35s;
E, dry after taking out zinc-plated steel product.
Preferably, in the step D, described goes out the nitric acid that striation part is 2-5%, room temperature, 3-6s.
Preferably, in the step E, the drying is the baking 4-6min in 60-65 DEG C of baking oven or is placed in sunlight
Under dry.
The invention has the beneficial effects that: chromium-free zinc-plated Toner of the invention is settled at one go using passivation+colouring
Mode, wherein color component of the iron magnesium hydrotalcite as Toner have the advantages that first is that the oxidation in potassium permanganate is made
It is red vivid under;Second is that its special layer structure, the color difference between different batches is smaller;Third is that titanium dioxide is added
Titanium can promote reflecting properties, improve glossiness and heavy feeling;Chromium-free zinc-plated Toner of the invention can significantly improve
The corrosion resistance of zinc-plated steel product reaches the requirement of low-toxicity green environmental protection.
Specific embodiment
Embodiment 1:
A kind of chromium-free zinc-plated Toner, the ingredient including following weight percent: sodium molybdate 8%, malonic acid
1.5%, sodium citrate 2.5%, potassium permanganate 7%, neopelex 2.5%, titanium dioxide 1.2%, iron magnesium neatly
Stone 10% and deionized water.
The application method of the chromium-free zinc-plated Toner, comprising the following steps:
A, after mixing iron magnesium hydrotalcite solid and titanium dioxide solids, 3.5 times of deionized water is added, is ground using wet process
Mill crosses 800 meshes;Oversize is ground repeatedly, until all filterings, then homogeneous obtains suspension A;
B, sodium molybdate, malonic acid, sodium citrate, potassium permanganate, neopelex are dissolved in remaining water, obtained
Solution B;
C, in use, high speed homogenization is heated to 95 DEG C, obtains Toner after suspension A and solution B are mixed;
D, zinc-plated steel product is gone out into light, zinc-plated steel product is then immersed into Toner and handles 25s;
E, dry after taking out zinc-plated steel product.
In the step D, galvanized layer thickness is in 10um.The nitric acid that striation part is 4% out, room temperature, 5s.
In the step E, the drying is to dry 5min in 62 DEG C of baking oven.
Embodiment 2:
A kind of chromium-free zinc-plated Toner, the ingredient including following weight percent: sodium molybdate 10%, malonic acid 1%,
Sodium citrate 3%, potassium permanganate 5%, neopelex 4%, titanium dioxide 1%, iron magnesium hydrotalcite 12% and go from
Sub- water.
The application method of the chromium-free zinc-plated Toner, comprising the following steps:
A, after mixing iron magnesium hydrotalcite solid and titanium dioxide solids, 3 times of deionized water is added, is ground using wet process
Mill crosses 800 meshes;Oversize is ground repeatedly, until all filterings, then homogeneous obtains suspension A;
B, sodium molybdate, malonic acid, sodium citrate, potassium permanganate, neopelex are dissolved in remaining water, obtained
Solution B;
C, in use, high speed homogenization is heated to 100 DEG C, obtains Toner after suspension A and solution B are mixed;
D, zinc-plated steel product is gone out into light, zinc-plated steel product is then immersed into Toner and handles 20s;
E, dry after taking out zinc-plated steel product.
In the step D, galvanized layer thickness is in 12um.The nitric acid that striation part is 5% out, room temperature, 3s.
In the step E, the drying is to dry 4min in 65 DEG C of baking oven.
Embodiment 3:
A kind of chromium-free zinc-plated Toner, the ingredient including following weight percent: sodium molybdate 6%, malonic acid 3%,
Sodium citrate 1%, potassium permanganate 8%, neopelex 2%, titanium dioxide 3%, iron magnesium hydrotalcite 5% and deionization
Water.
The application method of the chromium-free zinc-plated Toner, comprising the following steps:
A, after mixing iron magnesium hydrotalcite solid and titanium dioxide solids, 5 times of deionized water is added, is ground using wet process
Mill crosses 800 meshes;Oversize is ground repeatedly, until all filterings, then homogeneous obtains suspension A;
B, sodium molybdate, malonic acid, sodium citrate, potassium permanganate, neopelex are dissolved in remaining water, obtained
Solution B;
C, in use, high speed homogenization is heated to 80 DEG C, obtains Toner after suspension A and solution B are mixed;
D, zinc-plated steel product is gone out into light, zinc-plated steel product is then immersed into Toner and handles 35s;
E, dry after taking out zinc-plated steel product.
In the step D, galvanized layer thickness is in 8um.The nitric acid that striation part is 2% out, room temperature, 6s.
In the step E, the drying is to be placed under sunlight to dry.
Comparative example 1
By the titanium dioxide removal in embodiment 1, remaining proportion and preparation method are constant.
The glossiness of the zinc-plated steel product of embodiment 1-3 and comparative example 1 is tested and (is tested according to national standard method
Surface gloss is tested under the conditions of 60 ° of angles of reflection), obtained testing result is as shown in table 1.
Table 1: the glossiness test result of embodiment 1-3 and the sample of comparative example 1;
Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | |
Surface gloss | 92° | 90° | 93° | 68° |
By the above test result it is recognised that titanium dioxide is added in zinc-plated Toner of the invention can be obviously improved plating
The glossiness of the steel product of zinc.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of chromium-free zinc-plated Toner, which is characterized in that including following component: sodium molybdate, malonic acid, sodium citrate,
Potassium permanganate, neopelex, titanium oxide, iron magnesium hydrotalcite and deionized water.
2. chromium-free zinc-plated Toner as described in claim 1, which is characterized in that including following weight percent at
Point: sodium molybdate 6-10%, malonic acid 1-3%, sodium citrate 1-3%, potassium permanganate 5-8%, neopelex 2-
4%, titanium dioxide 1-3%, iron magnesium hydrotalcite 5-12% and deionized water.
3. chromium-free zinc-plated Toner as claimed in claim 1 or 2, which is characterized in that its application method, including following step
It is rapid:
A, after mixing iron magnesium hydrotalcite solid and titanium dioxide solids, 3-5 times of deionized water is added, using wet grinding,
Cross 800 meshes;Oversize is ground repeatedly, until all filterings, then homogeneous obtains suspension A;
B, sodium molybdate, malonic acid, sodium citrate, potassium permanganate, neopelex are dissolved in remaining water, obtain solution
B;
C, in use, high speed homogenization is heated to 80-100 DEG C, obtains Toner after suspension A and solution B are mixed;
D, zinc-plated steel product is gone out into light, zinc-plated steel product is then immersed into Toner and handles 20-35s;
E, dry after taking out zinc-plated steel product.
4. chromium-free zinc-plated Toner as claimed in claim 3, which is characterized in that in the step D, described goes out light
Condition is the nitric acid of 2-5%, room temperature, 3-6s.
5. chromium-free zinc-plated Toner as claimed in claim 3, which is characterized in that in the step E, the drying
It is dried to dry 4-6min in 60-65 DEG C of baking oven or being placed under sunlight.
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CN101906629A (en) * | 2010-08-09 | 2010-12-08 | 哈尔滨工业大学 | Blue write chromate-free passivation liquid of electrogalvanized layer and method for passivating electrogalvanized layer by adopting same |
CN102465286A (en) * | 2010-11-15 | 2012-05-23 | 广州市泓硕环保科技有限公司 | Composition for anti-corrosion treatment, corrosion-resistant material and preparation method of the corrosion-resistant material |
CN103289569A (en) * | 2013-05-09 | 2013-09-11 | 安徽工业大学 | Self-lubricating passivation solution and hot galvanizing self-lubricating coating steel sheet coated thereby |
CN106348591A (en) * | 2016-08-30 | 2017-01-25 | 长沙佳紫涂料科技有限公司 | Red glaze material and firing method thereof |
CN109295447A (en) * | 2018-11-26 | 2019-02-01 | 山东建筑大学 | A kind of household galvanized sheet sky blue trailing |
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2019
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US20080026157A1 (en) * | 2000-10-11 | 2008-01-31 | Christian Jung | Method for pretreating and/ or coating metallic surfaces with a paint-like coating prior to forming and use of substrates coated in this way |
CN101906629A (en) * | 2010-08-09 | 2010-12-08 | 哈尔滨工业大学 | Blue write chromate-free passivation liquid of electrogalvanized layer and method for passivating electrogalvanized layer by adopting same |
CN102465286A (en) * | 2010-11-15 | 2012-05-23 | 广州市泓硕环保科技有限公司 | Composition for anti-corrosion treatment, corrosion-resistant material and preparation method of the corrosion-resistant material |
CN103289569A (en) * | 2013-05-09 | 2013-09-11 | 安徽工业大学 | Self-lubricating passivation solution and hot galvanizing self-lubricating coating steel sheet coated thereby |
CN106348591A (en) * | 2016-08-30 | 2017-01-25 | 长沙佳紫涂料科技有限公司 | Red glaze material and firing method thereof |
CN109295447A (en) * | 2018-11-26 | 2019-02-01 | 山东建筑大学 | A kind of household galvanized sheet sky blue trailing |
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Application publication date: 20190927 |
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