CN106752228A - A kind of water-based anticorrosive paint and preparation method thereof - Google Patents
A kind of water-based anticorrosive paint and preparation method thereof Download PDFInfo
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- CN106752228A CN106752228A CN201510823678.4A CN201510823678A CN106752228A CN 106752228 A CN106752228 A CN 106752228A CN 201510823678 A CN201510823678 A CN 201510823678A CN 106752228 A CN106752228 A CN 106752228A
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Abstract
The invention discloses a kind of water-based anticorrosive paint and preparation method thereof, it provides anti-corrosion protection for the substrate such as auto parts and components such as rivet, bolt, spring.The coating composition is typically a kind of and contains the design of mixture of the component of A, B two, and is well mixed when in use.By total 100% mass fraction, contain 22~38% zinc aluminium alloy powder, 8~28% alcohol, 1~6% emulsifying agent, 0~0.5% thickener in mixture A, and 0.6~1% defoamer；0.1~0.9% micro mist calcium oxide, 10~15% silane coupler and deionized water is contained in mixture B.The coating formed using coating composition of the invention, has the hardness that improve, the salt fog resistance that improve and the porosity for reducing than existing Non-chromium Zn-al Coating.
Description
Technical field
The invention belongs to Metal surface anti-corrosion technical field of coatings, and in particular to a kind of aqueous chromium-free zinc-aluminum paint composition and its system
Preparation Method.
Background technology
The parts such as rivet, bolt, spring as each part on automobile firm and connecting elements, it is to pass using reliability
Important problem.The main cause for causing the parts such as rivet, bolt, spring to fail is corrosion failure.Twentieth century six or seven ten
Age, foreign countries develop Dyclo paint.Machinery is played in the stacking that Dyclo paint is noteworthy characterized by sheet aluminum zinc powder in coating
Isolation and the effect of sacrificial anode；Sexavalence chromium passivating metal surface, and its passivation product and Cr VI and the compound of trivalent chromium
Form the network structure with self-repair function.Dyclo paint has excellent antiseptic property, be widely used in rivet, bolt,
The surfacecti proteon of the auto parts and components such as spring.However, as worldwide all strengthens the method produced about control harmful substance
The formulation of regulations is restrained, Dyclo paint because containing harmful hexavalent chromium, all seeking the anti-corrosion of environment-friendly type both at home and abroad
Formulation for coating material.
At present, the anticorrosive paint of exploitation is still based on stacking masking and the sacrifice protection of phosphorus sheet zinc-aluminium metal both at home and abroad,
Develop the chromium-free zinc aluminum coating of commercial application, such as Geomet (Geomet) of U.S. MCI companies, Germany in succession in recent years
BNC of Delta coating, Beijing Yongtai and company of Delta companies etc..But not chromyl coating performance has with Dacroment
Larger gap, is mainly manifested in that coating hardness is low, levelability is poor, corrosion resistance is poor, there is stomata, one in high cost
Or it is multiple.These shortcomings seriously constrain the practical application of Non-chromium Zn-al Coating.
The content of the invention
The purpose of the present invention is directed to that the coating hardness that existing chromium-free zinc aluminum coating is present is low, corrosion resistance is poor, have the shortcomings that stomata,
A kind of aqueous zinc-aluminum paint is provided, there is the hardness and corrosion resistance that significantly improve, and low gas than existing Non-chromium Zn-al Coating
Porosity.
The present invention is realized by step by following technical solution：Step 1：Prepare the mixing of the component of A, B two respectively in no particular order
Composition formula.By total 100% mass fraction, the mixture compound method of component A is：First added in 8~28% alcoholic solution
22~38% zinc aluminium alloy powder (including zinc powder and aluminium powder and silver powder) is simultaneously sufficiently stirred for, and adds 1~6% emulsifying agent and fully stirs
Mix, add 0.6~1% defoamer and be sufficiently stirred for, add 0~0.5% thickener and stir；The mixing of B component
Thing compound method is：0.1~0.9% micro mist calcium oxide is slowly added into 10~15% deionized water, and is sufficiently stirred for,
It is subsequently added 10~15% silane coupler and stirs.Step 2：The mixed liquor of component A is lentamente poured into B component
In mixed liquor, and it is sufficiently stirred for；Step 3：The deionized water of surplus is added, and is sufficiently stirred for.
In above-mentioned technical proposal, the constituent of zinc aluminium alloy powder is by coating gross mass number total 100%：3~6% aluminium,
0.1~1% silver and 19~31% zinc；The metal or alloy of zinc aluminium alloy powder is in flakey, and thickness is 0.1~0.5 micron, particle diameter
It is 8~25 microns；Alcohol is one or more in polyethylene glycol, 1,3-PD, DPG；Emulsifying agent be OP-10 or
NP-9；Thickener is one kind or its mixture in hydroxyethyl cellulose, hydroxypropyl methyl cellulose；Defoamer is selected from mineral oil
Type aqueous defoamer such as dimethicone；Silane coupler is Silane coupling agent KH550, silane coupler KH560 or silane idol
One kind in connection agent KH578.
The present invention has following beneficial effect：The micro mist calcium oxide added in B component formula, makes formulation for coating material solution be in weak base
Property, significantly suppress the liberation of hydrogen of coating and the porosity of coating.The micro mist calcium oxide added in B component formula, makes the zinc of coating
Aluminium scale gap is filled with nano-calcium carbonate particles, significantly increases the hardness of coating, while making coating keep good plasticity.A
The argent added in component formula, delays corrosion of the chlorion to zinc-aluminium in coating, improves the corrosion resistance of coating.
Coating of the present invention is prepared at normal temperatures, has the advantages that process is simple, production time are short；It is of the present invention to have
Machine solvent belongs to lower boiling solvent, can promote coating 200~250 DEG C it is i.e. curable, attachment on the metallic substrate.With 300~350
DEG C conventional curing temperatures compare, significantly reduce energy consumption and production cycle.
Compared with prior art, the part being surface-treated using coating of the invention is had good salt fog resistance and resisted
Weathering and basal body binding force is high, Parts Surface Coating of the invention also solve existing Non-chromium Zn-al Coating exist hardness compared with
Low deficiency, coating has the advantages that wearability is good, coating composition with it is environment-friendly.
Specific embodiment
Some preferred embodiments of formulation for coating material proportioning of the present invention are given below.However, the mass parts of each component of the invention
The numerical value that number is not limited to.For a person skilled in the art, can reasonably be summarized in formula number range completely
And reasoning.
Embodiment 1
A kind of water-based anticorrosive paint and preparation method thereof:Prepare component A mixture：30% zinc is first added in 8% alcoholic solution
Al alloy powder (including 25% zinc powder and 4.4% aluminium powder and 0.6% silver powder) simultaneously stirs 5min, adds 6% emulsifying agent and stirs
5min, adds 0.6% defoamer and stirs 5min, adds 0.1% thickener and stirs 5min；B component is prepared to mix
Compound：0.9% micro mist calcium oxide is slowly added into 15% deionized water, and stirs 15min, be subsequently added 15%
Silane coupler and stir 5min.The mixed liquor of component A is lentamente poured into the mixed liquor of B component, and stirs 15min；
The deionized water of surplus is added, and stirs 15min, water-based anticorrosive paint is obtained.
Water-based anticorrosive paint obtained in the present embodiment, the coating of acquisition is after tested：25 ± 10 μm of coating layer thickness, hardness is 5H,
Adhesive force is 4 grades, and salt tolerance is 35~38 hours, and salt-fog resistant test is 340~360 hours.
Embodiment 2
A kind of water-based anticorrosive paint and preparation method thereof:Prepare component A mixture：25% is first added in 12% alcoholic solution
Zinc aluminium alloy powder (including 21% zinc powder and 3.8% aluminium powder and 0.2% silver powder) simultaneously stirs 5min, adds 5% emulsifying agent and stirs
5min is mixed, 0.7% defoamer is added and is stirred 5min, added 0.2% thickener and stir 5min；Prepare B component
Mixture：0.6% micro mist calcium oxide is slowly added into 12% deionized water, and stirs 15min, be subsequently added 15%
Silane coupler and stir 5min.The mixed liquor of component A is lentamente poured into the mixed liquor of B component, and stirs 15min；
The deionized water of surplus is added, and stirs 15min, water-based anticorrosive paint is obtained.
Water-based anticorrosive paint obtained in the present embodiment, the coating of acquisition is after tested：20 ± 6 μm of coating layer thickness, hardness is 5H,
Adhesive force is 5 grades, and salt tolerance is 38~40 hours, and salt-fog resistant test is 360~390 hours.
Embodiment 3
A kind of water-based anticorrosive paint and preparation method thereof:Prepare component A mixture：35% is first added in 16% alcoholic solution
Zinc aluminium alloy powder (including 30% zinc powder and 4.2% aluminium powder and 0.8% silver powder) simultaneously stirs 5min, adds 4% emulsifying agent and stirs
5min is mixed, 0.8% defoamer is added and is stirred 5min, added 0.2% thickener and stir 5min；Prepare B component
Mixture：0.8% micro mist calcium oxide is slowly added into 15% deionized water, and stirs 15min, be subsequently added 12%
Silane coupler and stir 5min.The mixed liquor of component A is lentamente poured into the mixed liquor of B component, and stirs 15min；
The deionized water of surplus is added, and stirs 15min, water-based anticorrosive paint is obtained.
Water-based anticorrosive paint obtained in the present embodiment, the coating of acquisition is after tested：21 ± 3 μm of coating layer thickness, hardness is 6H,
Adhesive force is 5 grades, and salt tolerance is 45~48 hours, and salt-fog resistant test is 420~470 hours.
Embodiment 4
A kind of water-based anticorrosive paint and preparation method thereof:Prepare component A mixture：38% is first added in 22% alcoholic solution
Zinc aluminium alloy powder (including 32% zinc powder and 5% aluminium powder and 1% silver powder) simultaneously stirs 5min, adds 6% emulsifying agent and stirs 5min,
Add 0.8% defoamer and stir 5min, add 0.1% thickener and stir 5min；Prepare B component mixture：
0.5% micro mist calcium oxide is slowly added into 11% deionized water, and stirs 15min, be subsequently added 13% silane idol
Connection agent simultaneously stirs 5min.The mixed liquor of component A is lentamente poured into the mixed liquor of B component, and stirs 15min；Add remaining
The deionized water of amount, and 15min is stirred, water-based anticorrosive paint is obtained.
Water-based anticorrosive paint obtained in the present embodiment, the coating of acquisition is after tested：23 ± 6 μm of coating layer thickness, hardness is 5H,
Adhesive force is 4 grades, and salt tolerance is 38~42 hours, and salt-fog resistant test is 420~450 hours.
Embodiment 5
A kind of water-based anticorrosive paint and preparation method thereof:Prepare component A mixture：22% is first added in 28% alcoholic solution
Zinc aluminium alloy powder (including 18% zinc powder and 3.6% aluminium powder and 0.4% silver powder) simultaneously stirs 5min, adds 1% emulsifying agent and stirs
5min is mixed, 0.8% defoamer is added and is stirred 5min, added 0.5% thickener and stir 5min；Prepare B component
Mixture：0.9% micro mist calcium oxide is slowly added into 15% deionized water, and stirs 15min, be subsequently added 10%
Silane coupler and stir 5min.The mixed liquor of component A is lentamente poured into the mixed liquor of B component, and stirs 15min；
The deionized water of surplus is added, and stirs 15min, water-based anticorrosive paint is obtained.
Water-based anticorrosive paint obtained in the present embodiment, the coating of acquisition is after tested：18 ± 2 μm of coating layer thickness, hardness is 6H,
Adhesive force is 5 grades, and salt tolerance is 33~36 hours, and salt-fog resistant test is 360~380 hours.
Claims (9)
1. a kind of water-based anticorrosive paint, it is characterised in that mixed the A and the components of B two for mixing well during including using, with institute
A and the components of B two are stated by mass fraction total 100%, wherein, the formula of the component A is by mass fraction：
The formula of the B component is by mass fraction：
Micro mist calcium oxide 0.3~0.9%
Silane coupler 10~15%
Deionized water surplus.
2. water-based anticorrosive paint according to claim 1, it is characterised in that zinc aluminium alloy powder presses coating gross mass number
Add up to 100%, its constituent is：
Zinc 19~31%
Aluminium 3~6%
Silver 0.1~1%.
3. the water-based anticorrosive paint according to claim 1 and 2, it is characterised in that the metal of the zinc aluminium alloy powder or
Alloy is in flakey, and its thickness is 0.1~0.5 micron, and its particle diameter is 8~25 microns.
4. water-based anticorrosive paint according to claim 1, it is characterised in that the alcohol is polyethylene glycol, 1,3- the third two
One or more in alcohol, DPG.
5. water-based anticorrosive paint according to claim 1, it is characterised in that the emulsifying agent is OP-10 or NP-9.
6. water-based anticorrosive paint according to claim 1, it is characterised in that the thickener be hydroxyethyl cellulose,
One kind or its mixture in hydroxypropyl methyl cellulose.
7. water-based anticorrosive paint according to claim 1, it is characterised in that it is aqueous that the defoamer is selected from mineral oil origin
Defoamer such as dimethicone.
8. water-based anticorrosive paint according to claim 1, it is characterised in that the silane coupler is silane coupler
One kind in KH550, silane coupler KH560 or silane coupler KH578.
9. the preparation method of the water-based anticorrosive paint according to any one of claim 1 to 8, it is characterised in that the system
Preparation Method is comprised the following steps：
Step 1：The mass fraction of the formula of the water-based anticorrosive paint as described in claim 1, is tuned into A and B in no particular order
The formula of two components；Wherein, the method for being tuned into component A is：Sequentially by described zinc aluminium alloy powder, emulsifying agent and froth breaking
Agent is added in alcoholic solution, and is stirred, and is subsequently added thickener and is sufficiently stirred for；Wherein, the method for being tuned into B component is：
Micro mist calcium oxide is slowly added into deionized water, and is sufficiently stirred for, be subsequently added silane coupler and stir；
Step 2：The mixed liquor of component A is lentamente poured into the mixed liquor of B component, and is sufficiently stirred for；
Step 3：The deionized water of surplus is added, and is sufficiently stirred for.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510823678.4A CN106752228A (en) | 2015-11-24 | 2015-11-24 | A kind of water-based anticorrosive paint and preparation method thereof |
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| CN201510823678.4A CN106752228A (en) | 2015-11-24 | 2015-11-24 | A kind of water-based anticorrosive paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558320A (en) * | 2022-10-28 | 2023-01-03 | 沈阳市航达科技有限责任公司 | Low-temperature curing anti-corrosion composite coating suitable for heavy corrosion prevention of spring piece and preparation method thereof |
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| CN115558320A (en) * | 2022-10-28 | 2023-01-03 | 沈阳市航达科技有限责任公司 | Low-temperature curing anti-corrosion composite coating suitable for heavy corrosion prevention of spring piece and preparation method thereof |
| CN115558320B (en) * | 2022-10-28 | 2024-01-26 | 沈阳市航达科技有限责任公司 | Low-temperature curing anti-corrosion composite coating suitable for heavy corrosion prevention of spring piece and preparation method thereof |
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