CN105062239B - The preparation method of high corrosion-resistant coating solution and hot-dip aluminizing zinc fingerprint-proof plate - Google Patents
The preparation method of high corrosion-resistant coating solution and hot-dip aluminizing zinc fingerprint-proof plate Download PDFInfo
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Abstract
The present invention relates to a kind of high corrosion-resistant coating solution and preparation method thereof and a kind of preparation method of hot-dip aluminizing zinc fingerprint-proof plate.High corrosion-resistant coating solution of the present invention, each component content is counted on the basis of 100 parts by weight water, 0.3~4 parts by weight of chromic anhydride, 2~6 parts by weight of phosphate, 0.1~10 parts by weight of pH adjusting agent, 0.1~25 parts by weight of oxysalt, 5~20 parts by weight of cataloid, water-based 5~30 parts by weight of organic resin lotion.High corrosion-resistant coating solution prepared by the present invention is with good stability, there is the performances such as excellent corrosion resistance, anti-finger printing, heat resistance, water resistance, adsorptivity coated in rear on hot dip aluminum zinc plate, it is of low cost, it can meet the requirement to hot dip aluminum zinc plate such as power control cabinet, building trade.
Description
Technical field
Present invention relates particularly to a kind of high corrosion-resistant coating solution and preparation method thereof and a kind of hot-dip aluminizing zinc fingerprint-proof plate
Preparation method.
Background technology
At present, the metal product using aluminium alloy as representative, is widely used in industries such as household electrical appliances, automobile, buildings, but picture
In humidity, containing industrial gasses, fuel gas, salinity and dust air spot corrosion, seam easily occur when being used in environment for aluminium alloy
The destruction of the form such as the stress corrosion of gap burn into and corrosion fatigue.The surface treatment of aluminium alloy is to expand its application range, extends it
The key of service life, the various corrosion resistance anti-finger printing coating solutions that thus be accordingly used in alloy surface processing come into being.
Wherein, hot-dip aluminizing zinc high corrosion-resistant fingerprint-proof plate is that floor height added value film production is coated on conventional aluminium zine plate surface
Product and it is manufactured, therefore there is excellent corrosion resistance, electric conductivity and anti-finger printing, and also have the manufacturing procedure simple, easily
The features such as application, hot dip aluminum zinc plate Coating composition is due to having merged the physical protection of Al, high-durability and the electrochemical protection of Zn
Characteristic, has easy shaping, high-fire resistance, high reflectivity, is in the decorative pattern for having the bright silver grey color and luster of high-decoration and rule on surface,
And there is embossing feeling, it is mainly used for construction industry and electrical cabinet.
Hot-dip aluminizing zinc resistance and fingerprint resistance coating is broadly divided into two kinds of chromating and chromium-free deactivation at present.Wherein, chromium-free deactivation
Although research is more and has large development, and can reduce certain injury to environment, its corrosion resistance etc. without chromium
Performance still can not be compared with chromating, and the corrosion resistance ability of its own is still insufficient for certain fields to aluminum-zinc alloy
The requirement of plate corrosion stability, heat resistance, fingerprint resistance, water resistance and adhesion etc..
Such as：Application No. " 201410142968.8 ", entitled " a kind of self-lubrication treatment agent composition and hot dip
Aluminium zine plate and preparation method thereof ", discloses one kind with water, cataloid, sodium metasilicate, lubricant, inorganic inhibitor, silane
Coupling agent and a kind of self-lubrication treatment agent composition that organic resin is raw material.What it was prepared can be used for moistening certainly for hot-dip aluminizing photo zincography
Although sliding agent composition does not contain chromium, but its corrosion resistance, according to method as defined in the standard of GB/T10125-1997 and
Condition carries out erosion test, then the corrosivity of aluminium plating zinc plate is evaluated according to the regulation of GB12335-90, in terms of 72h
Corroded area accounts for the percentage of the gross area, its corrosion resistance still >=1%, i.e., starts aluminium plating zinc plate in 72h and occurs more or less
Corrosion phenomenon.
And chromating processing is remarkably improved the resistance to corrosion of aluminium and its alloy surface, while the passivating film is to coating
There is good adhesive force, it is in addition of low cost, thus be widely applied in fields such as automobile, machinery, construction materials.For
There is very high request to corrosion resistance coating but to feature of environmental protection power control cabinet of less demanding, hot dip aluminum zinc plate for building, exploitation one
Kind is of great significance with high anti-corrosion resistance and fingerprint resistance clad plate tool.
The content of the invention
First technical problem to be solved by this invention is to provide a kind of high corrosion-resistant coating solution, which is coated on
On hot dip aluminum zinc plate, the coating after curing has a high corrosion-resistant, good heat resistance, water resistance, electric conductivity, anti-finger printing, resistance to
The performances such as blacking.
High corrosion-resistant coating solution prepared by the present invention, each component content are counted on the basis of 100 parts by weight water, chromic anhydride 0.3~4
Parts by weight, 2~6 parts by weight of phosphate, 0.1~10 parts by weight of pH adjusting agent, 0.1~25 parts by weight of oxysalt, colloid dioxy
5~20 parts by weight of SiClx, water-based 5~30 parts by weight of organic resin lotion.
Further, as preferred technical solution, each component content of coating solution is on the basis of 100 parts by weight water
Meter, 1.0~3 parts by weight of chromic anhydride, 2.5~4 parts by weight of phosphate, 0.4~0.6 parts by weight of pH adjusting agent, oxysalt 0.1~
2.0 parts by weight, 8~16 parts by weight of cataloid, water-based 10~25 parts by weight of organic resin lotion.
Further, as preferred technical solution, each component content of coating solution is on the basis of 100 parts by weight water
Meter, is 2.0 parts by weight of chromic anhydride, 4.0 parts by weight of phosphate, 0.4 parts by weight of pH adjusting agent, 1.2 parts by weight of oxysalt, colloid two
12 parts by weight of silica, water-based 20 parts by weight of organic resin lotion.
High corrosion-resistant coating solution described above, wherein, the phosphate is sodium phosphate, potassium phosphate, phosphoric acid ammonia, one hydrogen of phosphoric acid
At least one of sodium, potassium phosphate,monobasic；Preferably at least one of ammonium phosphate, sodium phosphate.
High corrosion-resistant coating solution described above, wherein, the oxysalt is potassium permanganate, sodium nitrite, ammonium molybdate, molybdenum
At least one of sour sodium, potassium molybdate, potassium chlorate, sodium chlorate, sodium metavanadate, are preferably at least one of sodium molybdate, sodium metavanadate.
High corrosion-resistant coating solution described above, wherein, the pH adjusting agent for ammonium hydroxide, sodium metasilicate, sodium acetate, sodium lactate,
At least one of sodium gluconate, sodium propionate, in order to enable the coating solution arrived has more preferable stability, and it is steady for a long time
Coating liquid energy is non-discolouring after fixed, does not agglomerate, does not precipitate, the pH adjusting agent is preferably at least one of ammonium hydroxide, sodium metasilicate.
High corrosion-resistant coating solution described above, wherein, the water-based organic resin lotion is water-base fluorocarbon emulsion, water-based third
At least one of olefin(e) acid resin emulsion, waterborne styrene-acrylic emulsion, aqueous phenolic aldehyde lotion, aqueous polyurethane emulsion, aqueous epoxy resins；
Preferably at least one of waterborne styrene-acrylic emulsion, aqueous polyurethane emulsion.The present invention using water-based organic resin lotion be because
The particle diameter of lotion is more than water-based organic resin aqueous solution, and lotion is upper with more importantly acting in application, can make the present invention
The coating of preparation has more preferable corrosion resistance.
High corrosion-resistant coating solution described above, wherein, the particle diameter of the cataloid is 1~50nm, in order to make painting
Layer has more preferable corrosion resistance and anti-finger printing, and the particle diameter of cataloid is preferably 1~30nm.
High corrosion-resistant coating solution described above, wherein, the coating solution also contains the auxiliary agent of following parts by weight：Surface-active
0.01~0.2 parts by weight of agent, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, 0.05~2 parts by weight of dispersant.
Second technical problem to be solved by this invention is to provide a kind of preparation method of high corrosion-resistant coating solution.
The preparation method of high corrosion-resistant coating solution described above, it is first that chromic anhydride is soluble in water, phosphate is then added, is treated
Oxysalt is added after dissolving, then adds pH adjusting agent, pH is adjusted to cataloid is added after 8~11, finally plus
Enter water-based organic resin lotion, and stir evenly, up to high corrosion-resistant coating solution of the present invention.The present invention adjusts pH to 8~11
Be in order to ensure the stability of coating solution because containing chromate in coating solution, chromate in acid condition can automatically by
Oxidation operation, reduces the stability of coating solution, forms the bad phenomenons such as coagulation, discoloration, in order to avoid these bad phenomenons, needs
To be prepared under alkaline environment.
3rd technical problem to be solved by this invention is to provide a kind of preparation method of hot-dip aluminizing zinc fingerprint-proof plate.
The preparation method of the hot-dip aluminizing zinc fingerprint-proof plate, comprises the following steps：
A, hot dip aluminum zinc plate matrix is prepared with conventional method；
B, roller coat or spray-on coating liquid on the hot dip aluminum zinc plate matrix that a steps prepare；The coating solution is above-mentioned institute
The high corrosion-resistant coating solution stated；
C, matrix of the b step coated with coating solution is cured into 10~30s at 70~100 DEG C, it is 0.2~1 μ to form thickness
The coating of m, is finally cooled to room temperature, to obtain the final product.
Further, as preferred technical solution, the matrix coated with coating solution is preferably at 75~85 DEG C
15~20s of lower curing.
High corrosion-resistant coating solution prepared by the present invention is with good stability, has after hardening with hot dip aluminum zinc plate
There are the performances such as excellent corrosion resistance, anti-finger printing, heat resistance, water resistance, adsorptivity, hot dip aluminum zinc plate matrix of the present invention uses chromium
Hydrochlorate Passivation Treatment, is remarkably improved the resistance to corrosion of aluminium and its alloy surface.Due to power control cabinet, building trade hot-dip aluminizing zinc
Plate is used for outdoor more, has very high requirement to corrosion resistance, of less demanding to the feature of environmental protection, and chromium-free deactivation can not also expire at present
Foot its corrosion resistance requirement, and the present invention prepares chromating coating and has good adhesive force, it is of low cost, it can meet automatically controlled
The requirement to hot dip aluminum zinc plate such as cabinet, building trade.
Embodiment
High corrosion-resistant coating solution prepared by the present invention, each component content are counted on the basis of 100 parts by weight water, chromic anhydride 0.3~4
Parts by weight, 2~6 parts by weight of phosphate, 0.1~10 parts by weight of pH adjusting agent, 0.1~25 parts by weight of oxysalt, colloid dioxy
5~20 parts by weight of SiClx, water-based 5~30 parts by weight of organic resin lotion.
Further, as preferred technical solution, each component content of coating solution is on the basis of 100 parts by weight water
Meter, 1.0~3 parts by weight of chromic anhydride, 2.5~4 parts by weight of phosphate, 0.4~0.6 parts by weight of pH adjusting agent, oxysalt 0.1~
2.0 parts by weight, 8~16 parts by weight of cataloid, water-based 10~25 parts by weight of organic resin lotion.
Further, as preferred technical solution, each component content of coating solution is on the basis of 100 parts by weight water
Meter, is 2.0 parts by weight of chromic anhydride, 4.0 parts by weight of phosphate, 0.4 parts by weight of pH adjusting agent, 1.2 parts by weight of oxysalt, colloid two
12 parts by weight of silica, water-based 20 parts by weight of organic resin lotion.
High corrosion-resistant coating solution described above, wherein, the phosphate is sodium phosphate, potassium phosphate, phosphoric acid ammonia, one hydrogen of phosphoric acid
At least one of sodium, potassium phosphate,monobasic；Preferably at least one of ammonium phosphate, sodium phosphate.
High corrosion-resistant coating solution described above, wherein, the oxysalt is potassium permanganate, sodium nitrite, ammonium molybdate, molybdenum
At least one of sour sodium, potassium molybdate, potassium chlorate, sodium chlorate, sodium metavanadate, are preferably at least one of sodium molybdate, sodium metavanadate.
High corrosion-resistant coating solution described above, wherein, the pH adjusting agent for ammonium hydroxide, sodium metasilicate, sodium acetate, sodium lactate,
At least one of sodium gluconate, sodium propionate, in order to enable the coating solution arrived has more preferable stability, and it is steady for a long time
Coating liquid energy is non-discolouring after fixed, does not agglomerate, does not precipitate, the pH adjusting agent is preferably at least one of ammonium hydroxide, sodium metasilicate.
High corrosion-resistant coating solution described above, wherein, the water-based organic resin lotion is water-base fluorocarbon emulsion, water-based third
At least one of olefin(e) acid resin emulsion, waterborne styrene-acrylic emulsion, aqueous phenolic aldehyde lotion, aqueous polyurethane emulsion, aqueous epoxy resins；
Preferably at least one of waterborne styrene-acrylic emulsion, aqueous polyurethane emulsion.The present invention using water-based organic resin lotion be because
The particle diameter of lotion is more than water-based organic resin aqueous solution, and lotion is upper with more importantly acting in application, can make the present invention
The coating of preparation has more preferable corrosion resistance.
High corrosion-resistant coating solution described above, wherein, the particle diameter of the cataloid is 1~50nm, in order to make painting
Layer has more preferable corrosion resistance and anti-finger printing, and the particle diameter of cataloid is preferably 1~30nm.
High corrosion-resistant coating solution described above, wherein, the coating solution also contains the auxiliary agent of following parts by weight：Surface-active
0.01~0.2 parts by weight of agent, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, 0.05~2 parts by weight of dispersant.
The preparation method of high corrosion-resistant coating solution described above, it is first that chromic anhydride is soluble in water, phosphate is then added, is treated
Oxysalt is added after dissolving, then adds pH adjusting agent, pH is adjusted to cataloid is added after 8~11, finally plus
Enter water-based organic resin lotion, and stir evenly, up to high corrosion-resistant coating solution of the present invention.The present invention adjusts pH to 8~11
Be in order to ensure the stability of coating solution because containing chromate in coating solution, chromate in acid condition can automatically by
Oxidation operation, reduces the stability of coating solution, forms the bad phenomenons such as coagulation, discoloration, in order to avoid these bad phenomenons, needs
To be prepared under alkaline environment.
The preparation method of hot-dip aluminizing zinc fingerprint-proof plate of the present invention, comprises the following steps：
A, hot dip aluminum zinc plate matrix is prepared with conventional method；
B, roller coat or spray-on coating liquid on the hot dip aluminum zinc plate matrix that a steps prepare；The coating solution is above-mentioned institute
The high corrosion-resistant coating solution stated；
C, matrix of the b step coated with coating solution is cured into 10~30s at 70~100 DEG C, it is 0.2~1 μ to form thickness
The coating of m, is finally cooled to room temperature, to obtain the final product.
Further, as preferred technical solution, the matrix coated with coating solution is preferably at 75~85 DEG C
15~20s of lower curing.
The embodiment of the present invention is further described with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described scope.
Embodiment 1
First, high corrosion-resistant coating solution and heat cross the preparation of aluminium zinc fingerprint-proof plate
1st, the preparation of high corrosion-resistant coating solution：
The each component content for being first according to high corrosion-resistant coating solution in table 1 weighs each component, then that chromic anhydride is soluble in water,
Then phosphate is added, oxysalt is added after to be dissolved, then adds pH adjusting agent, pH is adjusted to 8~11, is then added
Cataloid, is eventually adding water-based organic resin lotion, and stirs evenly, the high corrosion-resistant coating prepared up to the present invention
Liquid.
2nd, the preparation of hot-dip aluminizing zinc fingerprint-proof plate：
Comprise the following steps：
A, hot dip aluminum zinc plate matrix is prepared with conventional method；
B, roller coat or spray-on coating liquid on the hot dip aluminum zinc plate matrix that a steps prepare；The coating solution is above-mentioned institute
The high corrosion-resistant coating solution stated；
C, matrix of the b step coated with coating solution is cured into 10~30s at 70~100 DEG C, it is 0.2~1 μ to form thickness
The coating of m, is finally cooled to room temperature, up to hot-dip aluminizing zinc fingerprint-proof plate of the present invention.
The each component content of 1 high corrosion-resistant coating solution of table
| Numbering | Water | Chromic anhydride | Phosphate | PH adjusting agent | Oxysalt | Organic resin | Colloid SiO2 |
| 1 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 20 | 12 |
| 2 | 100 | 1.0 | 6.0 | 0.2 | 1.6 | 25 | 8 |
| 3 | 100 | 3.0 | 2.5 | 0.5 | 0.5 | 10 | 16 |
| 4 | 100 | 0.5 | 2.0 | 0.4 | 2.0 | 5 | 20 |
| 5 | 100 | 4.0 | 4.0 | 0.6 | 0.1 | 30 | 5 |
| 6 | 100 | 2.0 | 4.0 | 0.1 | 1.2 | 20 | 12 |
| 7 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 20 | 12 |
| 8 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 20 | 12 |
| 9 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 20 | 12 |
| 10 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 20 | 12 |
Wherein, in embodiment 1 in 1~6 group of numbering, phosphate is phosphoric acid ammonia, and pH adjusting agent is sodium metasilicate, and oxysalt is
Sodium molybdate, water-based organic resin are waterborne styrene-acrylic emulsion (solid content 48%)；
The particle diameter of cataloid is 1~30nm；
In 7 groups of numbering, phosphate is sodium phosphate, remaining component is identical with 1~6 group；
In 8 groups of numbering, pH adjusting agent is ammonium hydroxide (dense to cross as 25%), remaining component is identical with 1~6 group；
In 9 groups of numbering, oxysalt is ammonium metavanadate, remaining component is identical with 1~6 group；
In 10 groups of numbering, organic resin is aqueous polyurethane emulsion (solid content 46%), remaining component and 1~6 group of phase
Together.
Comparative example 1
In order to further prove that coating solution prepared by the present invention has the performances such as high corrosion-resistant and resistance and fingerprint resistance, the present invention is in reality
On the basis of applying the coating solution prepared in example 1, corresponding comparative example is devised, wherein each component content proportioning is as shown in table 2：
2 coating solution each component content of table
| Numbering | Water | Chromic anhydride | Phosphate | PH adjusting agent | Oxysalt | Organic resin | Colloid SiO2 |
| 1 | 100 | 0 | 4.0 | 0.4 | 1.2 | 20 | 12 |
| 2 | 100 | 2.0 | 4.0 | 0.4 | 0 | 20 | 12 |
| 3 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 0 | 12 |
| 4 | 100 | 2.0 | 4.0 | 0.4 | 1.2 | 20 | 0 |
| 5 | 100 | 2.0 | 0 | 0.4 | 1.2 | 20 | 12 |
| 6 | 100 | 2.0 | 4.0 | 0 | 1.2 | 20 | 12 |
Wherein, in comparative example 1 in 1~6 group of numbering, as 1~6 group of each component component of numbering in embodiment 1, i.e. phosphoric acid
Salt is phosphoric acid ammonia, and pH adjusting agent is sodium metasilicate, and oxysalt is sodium molybdate, water-based organic resin be waterborne styrene-acrylic emulsion (Gu
48%) content is.
Comparative example 2
Inventor is in the prior art, i.e., the Application No. mentioned in background technology " 201410142968.8 ", denomination of invention
It is special according to this on the basis of Chinese patent for " a kind of self-lubrication treatment agent composition and hot dip aluminum zinc plate and preparation method thereof "
In the embodiment with best corrosion resisting property prepared in profit it is identical proportioning composition each component, have chosen A1 in the patent,
The preferable experimental group of A2 and A7 group corrosion resistances as a comparison case 2, is prepared for corresponding coating solution, and the painting prepared according to the present invention
Layer and its has carried out corresponding performance test at liquid with the performance test methods after on hot dip aluminum zinc plate matrix.Its test method is such as
Under, test result is shown in Table 4.
2nd, high corrosion-resistant coating solution and its performance test after aluminium zinc fingerprint-proof plate is crossed for heat
To the high corrosion-resistant coating solution and its use of 1~6 group of preparation of numbering in numbering 1~10, and comparative example 1 in embodiment 1
Performance test after hot-dip aluminizing zinc fingerprint-proof plate, its specific test mode and professional standard are as follows：
The anti-fingerprint dope configured is put at 30 DEG C, the storage of observation liquid stabilising (occurs without color change, precipitation, coagulates
The bad phenomenon such as poly-) time, the results are shown in Table 3 (shelf-life of coating treatment liquid is 90d at present).
By this test come measure coating solution (1~6 group of numbering in 1~10 group of numbering and comparative example 1 in embodiment 1, and
A1, A2 and A7 group in comparative example 2) it is used for corrosion resistance, anti-finger printing, heat resistance, water resistance, adhesion that heat crosses aluminium zine plate back plate
And self lubricity, it the results are shown in Table 4.
Wherein, corrosion resistance carries out corrosion test according to method specified in GB/T10125-1997 and condition, then according to
The regulation of GB12335-90, which evaluates Corrosion results, (accounts for the percentage table of the gross area with the corroded area after 120h, 216h
Show).Wherein, the smaller the better (at present, the corrosion resistance of hot-dip aluminizing zinc plate coating is less than corroded area for 72h less than 5%, 120h
20%).
Anti-finger printing smears the change judgement of value of chromatism before and after vaseline according to specimen surface：If the change of front and rear aberration is small
Then it is A grades in 1；Then it is B grades less than 2 if the change of front and rear aberration is more than 1；If the change of front and rear aberration is more than 2 and is less than 4,
For C grades；If the change of front and rear aberration is more than 4, for D grades.The anti-finger printing of hot-dip aluminizing zinc plate coating is generally B grades at present.
Heat resistance judges according to the change of sample 20min under the conditions of 300 DEG C：If the change of front and rear aberration is less than 4, and film
Layer do not occur bubble, come off, dry linting phenomena such as, then be A grades；If the change of front and rear aberration is more than 4, less than 8, and film layer does not occur
Bubble, come off, dry linting phenomena such as, then be B grades；If the change of front and rear aberration is more than 8, and film layer does not occur bubble, comes off, dry linting
Phenomena such as, then it is C grades.The heat resistance of hot-dip aluminizing zinc plate coating is generally B grades and C grades at present.
Water resistance is to be measured using 100 DEG C of deionized water drops in sample：If sample is entirely without water mark, for A grades；Have light
Micro- water mark, then be B grades；Obvious water mark, then be C grades.The water resistance of hot dip aluminum zinc plate is generally A grades at present.
Adhesion crosses judgement according to the dry linting journey that comes off of coating after 180 ° of bendings of sample：If coming off does not occur in coating, dry linting
Phenomena such as, then it is A grades；If there is dry linting but do not occur obscission, for B grades；If there is obscission, for C grades.At present
The adhesion of hot-dip aluminizing zinc plate coating is generally A grades.
The time of 3 coating liquid storage-stable of table
| Embodiment 1 | Stablize number of days | Embodiment 1 | Stablize number of days | Comparative example 1 | Stablize number of days |
| 1 | ≥180 | 7 | ≥180 | 1 | ≥180 |
| 2 | ≥180 | 8 | ≥180 | 2 | ≥180 |
| 3 | ≥180 | 9 | ≥180 | 3 | ≥180 |
| 4 | ≥180 | 10 | ≥180 | 4 | ≥180 |
| 5 | ≥180 | 5 | 35 (discolorations) | ||
| 6 | >=90 (discolorations) | 6 | 3 (precipitation, discolorations) |
Test data can be seen that the present invention to prepare high corrosion-resistant coating solution with good stability from table 3, be easy to
Preserving, its holding time is 90 days also longer than the shelf-life of current coating treatment liquid, the coating solution of 6 groups of preparations of numbering in embodiment 1,
Compared with other groups because the pH adjusting agent ratio added is less, and its stability is weaker, 6 groups of numbering especially in comparative example 1
The coating solution of preparation, because not adding pH adjusting agent, it is only 3 days that its coating liquid, which stablizes number of days, and there have been precipitation within 3 days
And its discoloration, this explanation pH adjusting agent have the function that the stability of coating solution important.
4 coating solution of table is used for the performance test behind hot-dip aluminizing zinc fingerprint-proof plate surface
From the point of view of 4 coating solution of table is for the result of the performance comparison test after hot-dip aluminizing zinc plate surface, prepared by the present invention
The stability of high corrosion-resistant coating solution (1~10 group of numbering in embodiment 1) is equal to or better than 1~6 group of coating solution in comparative example 1,
Corrosion resistance is better than in comparative example 1 A1, A2 and A7 group in 1~5 group and comparative example 2；And the data of table 1, table 2 and table 3 are combined, also may be used
To draw the high corrosion-resistant coating solution for preparing of the present invention with good stability, high corrosion-resistant, anti-finger printing and superior attached
The property；It can further be drawn from table 4, in the case where other components are identical, be not added with the coating solution of chromic anhydride (in comparative example 1
1 group of numbering) its corroded area maximum, illustrate that its corrosion resisting property is minimum, hence it is evident that less than the coating solution for having added chromic anhydride；From comparative example 2
From the point of view of middle each component the performance test results, the coating solution of chromium is not added with, its corrosion resistance is well below the coating solution for having added chromium.By with
Upper description of test chromating coating solution is with good stability, and the coating which prepares has good attachment
Power, superior corrosion resistance, can meet the requirement to hot dip aluminum zinc plate high corrosion-resistant such as power control cabinet, building trade.
Claims (26)
1. high corrosion-resistant coating solution, it is characterised in that：Each component content of coating solution is counted on the basis of 100 parts by weight water, chromium
0.3~4 parts by weight of acid anhydride, 2~6 parts by weight of phosphate, 0.1~10 parts by weight of pH adjusting agent, 0.1~25 parts by weight of oxysalt,
5~20 parts by weight of cataloid, water-based 5~30 parts by weight of organic resin lotion；
Its preparation method is：It is first that chromic anhydride is soluble in water, phosphate is then added, adds oxysalt after to be dissolved, then
PH adjusting agent is added, pH is adjusted to cataloid is added after 8~11, is eventually adding water-based organic resin lotion, is stirred
Uniformly, to obtain the final product.
2. high corrosion-resistant coating solution according to claim 1, it is characterised in that：Each component content of coating solution is with 100 weights
Counted on the basis of amount part water, 1.0~3 parts by weight of chromic anhydride, 2.5~4 parts by weight of phosphate, 0.4~0.6 parts by weight of pH adjusting agent, contain
0.1~2.0 parts by weight of oxygen hydrochlorate, 8~16 parts by weight of cataloid, water-based 10~25 parts by weight of organic resin lotion.
3. high corrosion-resistant coating solution according to claim 2, it is characterised in that：Each component content of coating solution is with 100 weights
Counted on the basis of amount part water, 2.0 parts by weight of chromic anhydride, 4.0 parts by weight of phosphate, 0.4 parts by weight of pH adjusting agent, 1.2 weight of oxysalt
Measure part, 12 parts by weight of cataloid, water-based 20 parts by weight of organic resin lotion.
4. according to any one of claims 1 to 3 high corrosion-resistant coating solution, it is characterised in that：The phosphate for sodium phosphate,
At least one of potassium phosphate, phosphoric acid ammonia, disodium-hydrogen, potassium phosphate,monobasic.
5. high corrosion-resistant coating solution according to claim 4, it is characterised in that：The phosphate is ammonium phosphate, in sodium phosphate
It is at least one.
6. according to any one of claims 1 to 3 high corrosion-resistant coating solution, it is characterised in that：The oxysalt is Gao Meng
At least one of sour potassium, sodium nitrite, ammonium molybdate, sodium molybdate, potassium molybdate, potassium chlorate, sodium chlorate, sodium metavanadate.
7. high corrosion-resistant coating solution according to claim 6, it is characterised in that：The oxysalt is sodium molybdate, metavanadic acid
At least one of sodium.
8. according to any one of claims 1 to 3 high corrosion-resistant coating solution, it is characterised in that：The pH adjusting agent for ammonium hydroxide,
At least one of sodium metasilicate, sodium acetate, sodium lactate, sodium gluconate, sodium propionate.
9. high corrosion-resistant coating solution according to claim 8, it is characterised in that：The pH adjusting agent is ammonium hydroxide, in sodium metasilicate
It is at least one.
10. according to any one of claims 1 to 3 high corrosion-resistant coating solution, it is characterised in that：The water-based organic resin breast
Liquid for water-base fluorocarbon emulsion, water-based acrylic resin lotion, waterborne styrene-acrylic emulsion, aqueous phenolic aldehyde lotion, aqueous polyurethane emulsion,
At least one of in aqueous epoxy resins.
11. high corrosion-resistant coating solution according to claim 10, it is characterised in that：The water-based organic resin lotion is water-based
At least one of styrene-acrylic emulsion, aqueous polyurethane emulsion.
12. according to any one of claims 1 to 3 high corrosion-resistant coating solution, it is characterised in that：The cataloid
Particle diameter is 1~50nm.
13. the high corrosion-resistant coating solution according to claim 12, it is characterised in that：The particle diameter of the cataloid is 1
~30nm.
14. according to any one of claims 1 to 3 high corrosion-resistant coating solution, it is characterised in that：The coating solution also contain with
Lower parts by weight auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 weight of defoamer
Part, 0.05~2 parts by weight of dispersant.
15. high corrosion-resistant coating solution according to claim 4, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
16. high corrosion-resistant coating solution according to claim 5, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
17. high corrosion-resistant coating solution according to claim 6, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
18. high corrosion-resistant coating solution according to claim 7, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
19. high corrosion-resistant coating solution according to claim 8, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
20. high corrosion-resistant coating solution according to claim 9, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
21. high corrosion-resistant coating solution according to claim 10, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
22. the high corrosion-resistant coating solution according to claim 11, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
23. the high corrosion-resistant coating solution according to claim 12, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
24. the high corrosion-resistant coating solution according to claim 13, it is characterised in that：The coating solution also contains following parts by weight
Auxiliary agent：0.01~0.2 parts by weight of surfactant, 0.1~2 parts by weight of levelling agent, 0.05~1 parts by weight of defoamer, dispersant
0.05~2 parts by weight.
25. the preparation method of any one of the claim 1~24 high corrosion-resistant coating solution, it is characterised in that：First by chromic anhydride
It is soluble in water, phosphate is then added, oxysalt is added after to be dissolved, then adds pH adjusting agent, pH is adjusted to 8~11
After add cataloid, be eventually adding water-based organic resin lotion, stir evenly, to obtain the final product.
26. the preparation method of hot-dip aluminizing zinc fingerprint-proof plate, it is characterised in that：Comprise the following steps：
A, hot dip aluminum zinc plate matrix is prepared；
B, roller coat or spray-on coating liquid on the hot dip aluminum zinc plate matrix that a steps prepare；The coating solution for claim 1~
24 any one of them high corrosion-resistant coating solutions；
C, matrix of the b step coated with coating solution is cured into 10~30s at 70~100 DEG C, it is solid preferably at 75~85 DEG C
Change 15~20s, form the coating that thickness is 0.2~1 μm, be cooled to room temperature, to obtain the final product.
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| CN105385293A (en) * | 2015-12-28 | 2016-03-09 | 常熟市五爱电器设备有限公司 | Dual-power distribution device |
| CN106350802A (en) * | 2016-08-31 | 2017-01-25 | 常熟市强盛电力设备有限责任公司 | Hydroelectric generator rotor |
| CN108753069A (en) * | 2018-06-20 | 2018-11-06 | 江苏爱可青实业有限公司 | Corrosion-resistant guardrail and preparation method thereof |
| CN111471956A (en) * | 2020-04-29 | 2020-07-31 | 郑州中原利达新材料有限公司 | Water-based sealant for powder zinc impregnation |
| CN111876782A (en) * | 2020-07-21 | 2020-11-03 | 福建华杰电气科技有限公司 | Surface treatment liquid |
| CN115109991A (en) * | 2021-03-21 | 2022-09-27 | 上海梅山钢铁股份有限公司 | High-adhesion aluminum-zinc-plated steel plate for building foaming and manufacturing method thereof |
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