CN109385183A - A kind of pre-coated coil water-base epoxy priming paint and preparation method thereof - Google Patents
A kind of pre-coated coil water-base epoxy priming paint and preparation method thereof Download PDFInfo
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- CN109385183A CN109385183A CN201811256235.1A CN201811256235A CN109385183A CN 109385183 A CN109385183 A CN 109385183A CN 201811256235 A CN201811256235 A CN 201811256235A CN 109385183 A CN109385183 A CN 109385183A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
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Abstract
The invention belongs to paint vehicle fields more particularly to a kind of pre-coated coil water-base epoxy priming paint and preparation method thereof, the epoxy primer based on parts by weight, to include: 30~60 parts of aqueous epoxy emulsion；10~20 parts of pigments and fillers；2~6 parts of amino resins；0.1~0.5 part of substrate wetting agents；0~0.5 part of levelling agent；1~5 part of aqueous salt spray resistance auxiliary agent；10~30 parts of water；Amino resins includes complete and/or part Amino resin；Substrate wetting agents include organic silicon type, one of non-ionic and anionic substrate wetting agents or a variety of；Levelling agent includes acrylic compounds levelling agent and/or fluorin modified crylic acid levelling agent.The present invention is by designing suitable amino ratio, pigment, and the suitable auxiliary agent of selection, the epoxy primer provided rapid curing at 200~250 DEG C of galvanized sheet or galvanized aluminium board plate temperature, the performances such as the paint film of formation has high rigidity, adhesive force is good, flexibility is good, salt-fog resistant time is excellent are provided.
Description
Technical field
The invention belongs to paint vehicle field more particularly to a kind of pre-coated coil water-base epoxy priming paint and preparation method thereof.
Background technique
Precoated coil coating includes coil steel coating and coatings for aluminum coil, it is to be coated coating by the method for roller coating operation
In steel plate, aluminium material surface, it is then made pre-coated coil, pre-coated coil is all since light, property is excellent, inexpensive and be widely applied
Such as automobile manufacture, ship upholstery, household electrical appliance, furniture, container, cooker field all successively use.
Precoated coil coating generally uses priming paint matched with finishing coat two to apply two baking techniques, and front is primed and finishing coat, bottom
Main adhesive force, flexibility and anti-corrosive properties, the color of providing of paint mainly has light gray, pale yellow etc.；Finishing coat has good decorative, guarantor
Shield property, durability, scratch resistance and processability, color mainly have bright red, sea blue, refined black, orange etc..
Currently, common pre-coated coil priming paint mainly has epoxies priming paint and polyesters priming paint.Common polyesters priming paint
Price is relatively cheap, and flexibility is good, but adhesive force and salt fog resistance are relatively poor；And epoxies priming paint salt fog resistance is strong, attachment
Power is good, and comprehensive performance is prominent, but is difficult to Water-borne modification, therefore mainly based on organic solvent type, strong to the body and mind of environment and people
Health is affected.
As Environmental Protection Situation is more and more severeer, organic solvent type coatings will certainly be eliminated, and " oil changes water " is imperative.Base
In this, a kind of hardness height is developed, adhesive force, flexibility are good, the excellent water-base epoxy priming paint of salt spray resistance, will be with wide
Market prospects.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of pre-coated coil water-base epoxy priming paint and preparation method thereof,
Epoxy primer provided by the invention has more excellent hardness, adhesive force, flexibility and salt fog resistance using water as solvent
Energy.
The present invention provides a kind of water-base epoxy priming paint of pre-coated coil, include following components based on parts by weight:
The amino resins includes full Amino resin and/or part Amino resin；
The substrate wetting agents include organic silicon substrate wetting agents, non-ionic substrate wetting agents and anionic substrate
One of wetting agent is a variety of；
The levelling agent includes acrylic compounds levelling agent and/or fluorin modified crylic acid levelling agent.
Preferably, the solid content of the aqueous epoxy emulsion is 40~60wt%；The aqueous epoxy emulsion is at 25 DEG C
Viscosity be 300~3000mPas；The pH value of the aqueous epoxy emulsion is 6.5~7.5.
Preferably, epoxy resin of the aqueous epoxy emulsion by the trade mark by E12 and/or E03 is made.
Preferably, the pigments and fillers include in rutile type titanium white, barium sulfate, talcum powder, kaolin and sericite in powder
It is one or more.
Preferably, the solid content of the amino resins is 70~100wt%.
Preferably, the trade mark of the amino resins includes CYMEL 325, CYMEL 303, CYMEL 308 and CYMEL 385
One of or it is a variety of.
Preferably, the trade mark of the substrate wetting agents includes Dego 270 and/or W 77；
The trade mark of the levelling agent includes PW 336 and/or Efka 3777；
The trade mark of the aqueous salt spray resistance auxiliary agent includes Lubrizol 2063, Halox 505WF, 630 Halox and
One of Halox 515 or a variety of.
It preferably, further include dispersing agent and/or rust resisting pigment.
Preferably, the dispersing agent includes anionic dispersing agent and/or high-molecular type dispersing agent；
The rust resisting pigment includes one of trbasic zinc phosphate, aluminium triphosphate, micaceous iron oxide and strontium chromate or a variety of.
The present invention provides a kind of preparation methods of water-base epoxy priming paint of pre-coated coil described in above-mentioned technical proposal, including
Following steps:
Aqueous epoxy emulsion, pigments and fillers, amino resins, substrate wetting agents, levelling agent, aqueous salt spray resistance auxiliary agent and water are mixed
It closes, obtains pre-coated coil water-base epoxy priming paint.
Compared with prior art, the present invention provides a kind of pre-coated coil water-base epoxy priming paint and preparation method thereof.This
It invents the epoxy primer provided based on parts by weight, includes following components: 30~60 parts of aqueous epoxy emulsion；Pigments and fillers 10~20
Part；2~6 parts of amino resins；0.1~0.5 part of substrate wetting agents；0~0.5 part of levelling agent；1~5 part of aqueous salt spray resistance auxiliary agent；Water
10~30 parts；The amino resins includes full Amino resin and/or part Amino resin；The substrate wetting
Agent includes one of organic silicon substrate wetting agents, non-ionic substrate wetting agents and anionic substrate wetting agents or more
Kind；The levelling agent includes acrylic compounds levelling agent and/or fluorin modified crylic acid levelling agent.The present invention is by designing suitable ammonia
Base ratio, pigment, and the suitable auxiliary agent of selection, allow the epoxy primer provided in galvanized sheet or galvanized aluminium board plate temperature 200
Rapid curing (20~30s) at~250 DEG C, the paint film being formed by curing have high rigidity, adhesive force is good, flexibility is good, salt spray resistance
The performances such as the time is excellent.In addition, epoxy primer provided by the invention belongs to low VOC product in water paint, have environmentally friendly, green
The characteristics of color；In construction, which has easily dispersion, levelability superior properties using water as diluent.The present invention is mentioned
The epoxy primer of confession is tested, as the result is shown: in terms of hardness, water-base epoxy priming paint hardness of the invention reaches Chinese pencil 3H
No marking；In terms of adhesive force, 0 grade of water-base epoxy priming paint adhesive force of the invention；Flexibility, water-base epoxy bottom of the invention
Paint can reach 1T~2T without peeling on T is curved；In terms of salt-fog resistant time: 5~7 μ of water-base epoxy primer dry films thickness of the invention
M, 13~15 μm of water-based precoated coiled material coating acrylic acid top-coat thickness of dry film of arranging in pairs or groups, after pretreatment common galvanized iron sheet, salt tolerant
The mist time up to 1100h, is much higher than water-based precoated coiled material coating polyester priming paint and oiliness precoated coil coating epoxy primer.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of pre-coated coil water-base epoxy priming paint, include following components based on parts by weight:
The amino resins includes full Amino resin and/or part Amino resin；
The substrate wetting agents include organic silicon substrate wetting agents, non-ionic substrate wetting agents and anionic substrate
One of wetting agent is a variety of；
The levelling agent includes acrylic compounds levelling agent and/or fluorin modified crylic acid levelling agent.
Pre-coated coil water-base epoxy priming paint provided by the invention includes aqueous epoxy emulsion, pigments and fillers, amino resins, base
Material wetting agent, levelling agent, aqueous salt spray resistance auxiliary agent and water.Wherein, the solid content of the aqueous epoxy emulsion be preferably 40~
60wt%, concretely 40wt%, 42wt%, 45wt%, 48wt%, 50wt%, 52wt%, 55wt%, 58wt% or
60wt%；Viscosity of the aqueous epoxy emulsion at 25 DEG C is preferably 300~3000mPas, concretely 300mPas,
400mPa·s、500mPa·s、600mPa·s、700mPa·s、800mPa·s、900mPa·s、1000mPa·s、
1100mPa·s、1200mPa·s、1300mPa·s、1400mPa·s、1500mPa·s、1600mPa·s、1700mPa·s、
1800mPas, 1900mPas, 2000mPas, 2500mPas or 3000mPas；The pH of the aqueous epoxy emulsion
Value preferably 6.5~7.5, concretely 6.5,6.6,6.7,6.8,6.9,7,7.1,7.2,7.3,7.4 or 7.5.In the present invention
In, the aqueous epoxy emulsion is preferably made of epoxy resin, the epoxy resin system for being more preferably E12 and/or E03 by the trade mark
At.In one embodiment provided by the invention, phase inversion can be used and prepare the aqueous epoxy emulsion, detailed process packet
It includes: under agitation, being first uniformly mixed epoxy resin and emulsifier, water is being added into system later, with amount of water
Increase, whole system from Water-In-Oil to oil-in-water change, eventually form uniform and stable water-dilutable system (i.e. water-base epoxy
Lotion).In above-mentioned aqueous epoxy emulsion preparation method provided by the invention, the emulsifier include but is not limited to AEO-9 and/
Or PEG-2000；The dosage of the emulsifier is preferably 5~15wt% of the epoxy resin quality, concretely 5wt%,
6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt%, 14wt% or 15wt%.It is mentioned in the present invention
In one embodiment of confession, the dosage of emulsifier AEO-9 is preferably 3~10wt% of the epoxy resin quality, concretely
3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt% or 10wt%.In one embodiment provided by the invention,
The dosage of emulsifier PEG-2000 is preferably 3~10wt% of the epoxy resin quality, concretely 3wt%, 4wt%,
5wt%, 6wt%, 7wt%, 8wt%, 9wt% or 10wt%.In the present invention, the aqueous epoxy emulsion is in epoxy primer
Content be 30~60 parts by weight, concretely 30 parts by weight, 31 parts by weight, 32 parts by weight, 33 parts by weight, 34 parts by weight, 35
Parts by weight, 36 parts by weight, 37 parts by weight, 38 parts by weight, 39 parts by weight, 40 parts by weight, 41 parts by weight, 42 parts by weight, 43 weight
Part, 44 parts by weight, 45 parts by weight, 46 parts by weight, 47 parts by weight, 48 parts by weight, 49 parts by weight, 50 parts by weight, 51 parts by weight, 52
Parts by weight, 53 parts by weight, 54 parts by weight, 55 parts by weight, 56 parts by weight, 57 parts by weight, 58 parts by weight, 59 parts by weight or 60 weight
Part.
In the present invention, the pigments and fillers include but is not limited to rutile type titanium white, barium sulfate, talcum powder, kaolin
With one of sericite in powder or a variety of.Wherein, the kaolin is preferably calcined kaolin, and the sericite in powder is preferably wet
Method sericite in powder.In one embodiment provided by the invention, the pigments and fillers include rutile type titanium white and sericite in powder,
The mass ratio of the rutile type titanium white and sericite in powder is preferably 1:(0.5~2), concretely 1:1；It is provided in the present invention
Another embodiment in, the pigments and fillers include rutile type titanium white and calcined kaolin, the rutile type titanium white
Mass ratio with calcined kaolin is preferably 1:(0.5~2), concretely 1:1；In other embodiments provided by the invention,
The pigments and fillers include rutile type titanium white and talcum powder, and the mass ratio of the rutile type titanium white and talcum powder is preferably
1:(0.5~2), concretely 1:1.In the present invention, the partial size of the pigments and fillers is preferably 1000~1500, concretely
1000 mesh, 1050 mesh, 1100 mesh, 1150 mesh, 1200 mesh, 1250 mesh, 1300 mesh, 1350 mesh, 1400 mesh, 1450 mesh or 1500
Mesh.In the present invention, content of the pigments and fillers in epoxy primer is 10~20 parts by weight, concretely 10 parts by weight, 11
Parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 17 parts by weight, 18 parts by weight, 19 weight
Part or 20 parts by weight.
In the present invention, the amino resins includes full Amino resin and/or part Amino resin, excellent
Choosing includes one of amino resins that the trade mark is CYMEL 325, CYMEL 303, CYMEL 308 and CYMEL 385 or a variety of.
In the present invention, the amino resins of the above-mentioned trade mark is preferably provided by U.S.'s cyanogen.In the present invention, consolidating for the amino resins contains
Amount be preferably 70~100wt%, concretely 70wt%, 72wt%, 74wt%, 76wt%, 78wt%, 80wt%, 82wt%,
85wt%, 88wt%, 90wt%, 92wt%, 95wt%, 98wt% or 100wt%.In the present invention, the amino resins exists
Content in epoxy primer is 2~6 parts by weight, concretely 2 parts by weight, 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight, 4 weights
Measure part, 4.5 parts by weight, 5 parts by weight, 5.5 parts by weight or 6 parts by weight.
In the present invention, the substrate wetting agents include organic silicon substrate wetting agents, non-ionic substrate wetting agents and
At least one of anionic substrate wetting agents preferably include the substrate wetting agents that the trade mark is Dego 270 and/or W 77.?
In the present invention, the trade mark is preferably provided by Digao for the substrate wetting agents of Dego 270, and the trade mark is that the substrate wetting agents of W 77 are preferred
By this offer of hamming.In the present invention, content of the substrate wetting agents in epoxy primer is 0.1~0.5 parts by weight, specifically
Can for 0.1 parts by weight, 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight,
0.45 parts by weight or 0.5 parts by weight.
In the present invention, the levelling agent includes acrylic compounds levelling agent and/or fluorin modified crylic acid levelling agent, is preferably wrapped
Include the levelling agent that the trade mark is PW 336 and/or Efka 3777.In the present invention, the trade mark is the levelling agent of PW 336 preferably by elder generation
Wound provides, and the trade mark is preferably provided by BASF for the levelling agent of Efka 3777.In the present invention, the levelling agent is at epoxy bottom
Content in paint is 0~0.5 parts by weight, concretely 0.1 parts by weight, 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight,
0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight, 0.45 parts by weight or 0.5 parts by weight.
In the present invention, the trade mark of the aqueous salt spray resistance auxiliary agent preferably include Lubrizol 2063, Halox 505WF,
One of Halox 630 and Halox 515 or a variety of.In one embodiment provided by the invention, the aqueous salt spray resistance
The trade mark of auxiliary agent includes Lubrizol 2063 and Halox 515, aqueous salt spray resistance auxiliary agent that the trade mark is Lubrizol 2063 and
The trade mark is that the mass ratio of aqueous salt spray resistance auxiliary agent of Halox 515 is preferably 1:(0.5~2), concretely 1:1；In the present invention
In another embodiment provided, the trade mark of the aqueous salt spray resistance auxiliary agent includes Halox 505WF and Halox 515, the trade mark
The mass ratio for the aqueous salt spray resistance auxiliary agent that aqueous salt spray resistance auxiliary agent and the trade mark for Halox 505WF are Halox 515 is preferably
1:(0.5~2), concretely 1:1；In other embodiments provided by the invention, the trade mark packet of the aqueous salt spray resistance auxiliary agent
Halox 505WF and Halox 630 is included, the aqueous salt spray resistance auxiliary agent and the trade mark that the trade mark is Halox 505WF are Halox 630
The mass ratio of aqueous salt spray resistance auxiliary agent is preferably 1:(0.5~2), concretely 1:1.In the present invention, trade mark Lubrizol
2063 aqueous salt spray resistance auxiliary agent is preferably provided by Lu Borun, and the trade mark is Halox 505WF, 630 Halox and Halox 515
Aqueous salt spray resistance auxiliary agent is preferably provided by extra large Loews.In the present invention, aqueous salt spray resistance auxiliary agent the containing in epoxy primer
Amount be 1~5 parts by weight, concretely 1 parts by weight, 1.5 parts by weight, 2 parts by weight, 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight,
4 parts by weight, 4.5 parts by weight or 5 parts by weight.
In the present invention, content of the water in epoxy primer is 10~30 parts by weight, concretely 10 parts by weight, 11
Parts by weight, 12 parts by weight, 13 parts by weight, 13.6 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 16.1 parts by weight, 17
Parts by weight, 18 parts by weight, 19 parts by weight, 19.5 parts by weight, 20 parts by weight, 21 parts by weight, 22 parts by weight, 23 parts by weight, 24 weights
Measure part, 25 parts by weight, 26 parts by weight, 27 parts by weight, 28 parts by weight, 29 parts by weight or 30 parts by weight.
In the present invention, dispersing agent and/or rust resisting pigment are also contained in the epoxy primer.Wherein, the dispersing agent is excellent
Choosing include anionic dispersing agent and/or high-molecular type dispersing agent, more preferably include the trade mark be BYK 190, Dego 755W and
One of dispersing agent of Dego 760W is a variety of.In the present invention, the trade mark is the dispersing agent of BYK 190 preferably by Bi Keti
For the trade mark is preferably provided by Digao for the dispersing agent of Dego 755W and Dego 760W.In the present invention, the dispersing agent is in ring
Content in oxygen priming paint is preferably 0.1~0.5 parts by weight, concretely 0.1 parts by weight, 0.15 parts by weight, 0.2 parts by weight,
0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight, 0.45 parts by weight or 0.5 parts by weight.In the present invention, institute
Stating rust resisting pigment includes but is not limited to one of trbasic zinc phosphate, aluminium triphosphate, micaceous iron oxide and strontium chromate or a variety of.At this
It invents in the one embodiment provided, the rust resisting pigment includes trbasic zinc phosphate and strontium chromate, the matter of the trbasic zinc phosphate and strontium chromate
Amount is than being preferably 1:(0.5~2), concretely 1:1；In another embodiment provided by the invention, the rust resisting pigment packet
Include trbasic zinc phosphate and aluminium triphosphate, the mass ratio of the trbasic zinc phosphate and aluminium triphosphate is preferably 1:(0.5~2), concretely
1:1；In other embodiments provided by the invention, the rust resisting pigment includes aluminium triphosphate and micaceous iron oxide, and described three
The mass ratio of poly aluminium phosphate and micaceous iron oxide is preferably 1:(0.5~2), concretely 1:1.In the present invention, the antirust
Content of the pigment in epoxy primer is preferably 2~15 parts by weight, concretely 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 weight
Part, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, 10 parts by weight, 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 weight
Part or 15 parts by weight.
The present invention also provides a kind of preparation method of water-base epoxy priming paint of pre-coated coil described in above-mentioned technical proposal, packets
Include following steps:
Aqueous epoxy emulsion, pigments and fillers, amino resins, substrate wetting agents, levelling agent, aqueous salt spray resistance auxiliary agent and water are mixed
It closes, obtains pre-coated coil water-base epoxy priming paint.
In preparation method provided by the invention, directly each raw material is uniformly mixed according to the proportion, be can be obtained described pre-
Apply coiled material water-base epoxy priming paint.Wherein, the raw material includes aqueous epoxy emulsion, pigments and fillers, amino resins, substrate wetting
Agent, levelling agent, aqueous salt spray resistance auxiliary agent and water, it is also preferable to include dispersing agent and/or rust resisting pigment, the present invention is hereinbefore
The specific choice and dosage of each raw material are described, details are not described herein.In one embodiment provided by the invention, institute
The mode for stating mixing is preferably that substep mixes, and is specifically included: first by aqueous epoxy emulsion, dispersing agent, substrate wetting agents, levelling
Agent, aqueous salt spray resistance auxiliary agent and water mixing, later again mix the mixture of acquisition and pigments and fillers, rust resisting pigment and amino resins
It closes.
In preparation method provided by the invention, by each raw material after mixing, preferably to the aqueous ring being mixed to get
Oxygen priming paint is ground.Wherein, the grinding temperature preferably≤50 DEG C；The fineness of water-base epoxy priming paint after grinding preferably≤
20μm。
The present invention makes the epoxy primer provided by designing suitable amino ratio, pigment, and the suitable auxiliary agent of selection
Rapid curing (20~30s), the paint film being formed by curing there can be height at 200~250 DEG C of galvanized sheet or galvanized aluminium board plate temperature
The performances such as hardness, adhesive force are good, flexibility is good, salt-fog resistant time is excellent.In addition, epoxy primer provided by the invention is in aqueous painting
Belong to low VOC product in material, has the characteristics that environmental protection, green；In construction, which has easy using water as diluent
Dispersion, levelability superior properties.Epoxy primer provided by the invention is tested, as the result is shown: of the invention in terms of hardness
Water-base epoxy priming paint hardness reaches Chinese pencil 3H no marking；In terms of adhesive force, water-base epoxy priming paint adhesive force 0 of the invention
Grade；Flexibility, water-base epoxy priming paint of the invention can reach 1T~2T without peeling on T is curved；In terms of salt-fog resistant time: this
5~7 μm of the water-base epoxy primer dry films thickness of invention, water-based precoated coiled material coating acrylic acid top-coat thickness of dry film 13~15 of arranging in pairs or groups
μm, common galvanized iron sheet, salt-fog resistant time are much higher than water-based precoated coiled material coating polyester priming paint up to 1100h after pretreatment
With oiliness precoated coil coating epoxy primer.
For the sake of becoming apparent from, it is described in detail below by following embodiment.
In following embodiments provided by the invention, the aqueous epoxy emulsion prepares the aqueous ring using phase inversion
Oxygen lotion, detailed process includes: under agitation, to be first uniformly mixed epoxy resin and emulsifier, later into system
Water is added, with the increase of amount of water, whole system is changed from Water-In-Oil to oil-in-water, eventually forms uniform and stable water-base epoxy
Lotion.
Embodiment 1
1) composition of raw materials
2) water-base epoxy priming paint is prepared according to above-mentioned raw materials formula
Step 1: aqueous epoxy emulsion and dispersing agent, substrate wetting agents, levelling agent, aqueous salt spray resistance auxiliary agent and water are mixed
It closes, is stirred evenly using dispersion machine, obtain mixture；
Step 2: pigments and fillers, rust resisting pigment and amino resins being added in said mixture, is uniformly dispersed using dispersion machine
Afterwards, basket type sand mill is recycled to be ground to fineness < 20 μm, grinding temperature controls < 50 DEG C.
Embodiment 2
1) composition of raw materials
2) epoxy primer is prepared according to above-mentioned raw materials formula
Step 1: aqueous epoxy emulsion and dispersing agent, substrate wetting agents, levelling agent, aqueous salt spray resistance auxiliary agent and water are mixed
It closes, is stirred evenly using dispersion machine, obtain mixture；
Step 2: pigments and fillers, rust resisting pigment and amino resins being added in said mixture, is uniformly dispersed using dispersion machine
Afterwards, basket type sand mill is recycled to be ground to fineness < 20 μm, grinding temperature controls < 50 DEG C.
Embodiment 3
1) composition of raw materials
2) epoxy primer is prepared according to above-mentioned raw materials formula
Step 1: aqueous epoxy emulsion and dispersing agent, substrate wetting agents, levelling agent, aqueous salt spray resistance auxiliary agent and water are mixed
It closes, is stirred evenly using dispersion machine, obtain mixture；
Step 2: pigments and fillers, rust resisting pigment and amino resins being added in said mixture, is uniformly dispersed using dispersion machine
Afterwards, basket type sand mill is recycled to be ground to fineness < 20 μm, grinding temperature controls < 50 DEG C.
Embodiment 4
It is water-base epoxy priming paint and water-based precoated coiled material coating acrylic primer prepared by the embodiment of the present invention 1~3, aqueous
Precoated coil coating polyester priming paint and solvent type epoxy priming paint carry out performance comparison, and the results are shown in Table 1:
1 primer performance contrast table of table
Note:
1. substrate used in is common galvanized iron sheet, and with a thickness of 0.35mm, zinc-plated amount is 120g/m2, surface is finishing zinc
Flower passes through degreasing-washing-drying-passivation preprocessing process；
2. all primer dry films thickness controls are at 5-7 μm, water-based system collocation finishing coat is water based shop coiled material acrylic acid
Finishing coat, solvent-based system arrange in pairs or groups finishing coat as oiliness pre-coated coil acrylic acid top-coat, and thickness of dry film is controlled at 13-15 μm；
3. examination criteria is HG/T3830-2006 pre-coated coil；
4. salt spray resistance index is the testing result after bottom surface is mating, and T is curved, adhesive force, hardness, VOC are the inspection of independent priming paint
Survey result.
As can be seen from the above table, hardness reaches Chinese pencil 3H no marking；0 grade of substrate adhesion；T is curved to reach 1T-2T
Without peeling；In terms of salt-fog resistant time: 5-7 μm of thickness of water-base epoxy primer dry films of the invention, water-based precoated coiled material coating of arranging in pairs or groups
13-15 μm of acrylic acid top-coat thickness of dry film, common galvanized iron sheet, salt-fog resistant time are much higher than water up to 1100h after pretreatment
Property precoated coil coating polyester priming paint 380h and oiliness precoated coil coating epoxy primer 660h；Water-base epoxy bottom of the invention
Paint, belongs to low VOC product (< 20mg/L) in water paint, has the characteristics that environmental protection, green.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of pre-coated coil water-base epoxy priming paint includes based on parts by weight following components:
The amino resins includes full Amino resin and/or part Amino resin；
The substrate wetting agents include organic silicon substrate wetting agents, non-ionic substrate wetting agents and the wetting of anionic substrate
One of agent is a variety of；
The levelling agent includes acrylic compounds levelling agent and/or fluorin modified crylic acid levelling agent.
2. water-base epoxy priming paint according to claim 1, which is characterized in that the solid content of the aqueous epoxy emulsion is 40
~60wt%；Viscosity of the aqueous epoxy emulsion at 25 DEG C is 300~3000mPas；The pH of the aqueous epoxy emulsion
Value is 6.5~7.5.
3. water-base epoxy priming paint according to claim 1, which is characterized in that the aqueous epoxy emulsion is E12 by the trade mark
And/or the epoxy resin of E03 is made.
4. water-base epoxy priming paint according to claim 1, which is characterized in that the pigments and fillers include rutile titanium dioxide
One of powder, barium sulfate, talcum powder, kaolin and sericite in powder are a variety of.
5. water-base epoxy priming paint according to claim 1, which is characterized in that the solid content of the amino resins be 70~
100wt%.
6. water-base epoxy priming paint according to claim 1, which is characterized in that the trade mark of the amino resins includes CYMEL
325, one of CYMEL 303, CYMEL 308 and CYMEL 385 or a variety of.
7. water-base epoxy priming paint according to claim 1, which is characterized in that the trade mark of the substrate wetting agents includes Dego
270 and/or W 77；
The trade mark of the levelling agent includes PW 336 and/or Efka 3777；
The trade mark of the aqueous salt spray resistance auxiliary agent includes Lubrizol 2063, Halox 505WF, 630 Halox and Halox
One of 515 or a variety of.
8. water-base epoxy priming paint according to claim 1, which is characterized in that further include dispersing agent and/or rust resisting pigment.
9. water-base epoxy priming paint according to claim 8, which is characterized in that the dispersing agent includes anionic dispersing agent
And/or high-molecular type dispersing agent；
The rust resisting pigment includes one of trbasic zinc phosphate, aluminium triphosphate, micaceous iron oxide and strontium chromate or a variety of.
10. a kind of preparation method of water-base epoxy priming paint of pre-coated coil described in claim 1, comprising the following steps:
Aqueous epoxy emulsion, pigments and fillers, amino resins, substrate wetting agents, levelling agent, aqueous salt spray resistance auxiliary agent and water are mixed,
Obtain pre-coated coil water-base epoxy priming paint.
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Cited By (3)
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| CN110819206A (en) * | 2019-11-14 | 2020-02-21 | 云南生一化工有限公司 | Salt spray resistant water-based epoxy anti-rust primer and preparation method thereof |
| CN112552777A (en) * | 2019-09-26 | 2021-03-26 | 雅图高新材料有限公司 | Water-based epoxy primer for wet-on-wet process and preparation method thereof |
| CN113527984A (en) * | 2021-08-04 | 2021-10-22 | 山东七维新材料有限公司 | High-salt-spray-resistance water-based smooth coating and preparation method thereof |
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| CN112552777A (en) * | 2019-09-26 | 2021-03-26 | 雅图高新材料有限公司 | Water-based epoxy primer for wet-on-wet process and preparation method thereof |
| CN110819206A (en) * | 2019-11-14 | 2020-02-21 | 云南生一化工有限公司 | Salt spray resistant water-based epoxy anti-rust primer and preparation method thereof |
| CN113527984A (en) * | 2021-08-04 | 2021-10-22 | 山东七维新材料有限公司 | High-salt-spray-resistance water-based smooth coating and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN109385183B (en) | 2021-06-15 |
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Denomination of invention: The invention relates to a water-based epoxy primer for precoating coiled material and a preparation method thereof Effective date of registration: 20211123 Granted publication date: 20210615 Pledgee: SHANDONG CHAMBROAD PETROCHEMICALS Co.,Ltd. Pledgor: CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE Co.,Ltd. Registration number: Y2021980013118 |
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