CN110003771A - A kind of wettable matched paint and preparation method thereof for touching wet trade - Google Patents
A kind of wettable matched paint and preparation method thereof for touching wet trade Download PDFInfo
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- CN110003771A CN110003771A CN201910227889.XA CN201910227889A CN110003771A CN 110003771 A CN110003771 A CN 110003771A CN 201910227889 A CN201910227889 A CN 201910227889A CN 110003771 A CN110003771 A CN 110003771A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
-
- 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
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
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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
-
- 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
-
- 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
Abstract
The invention discloses a kind of wettable matched paints and preparation method thereof for touching wet trade, water-base epoxy anti-corrosion primer is combined with aqueous double-component polyurethane finishing coat, while meeting the performances such as apparent paint film, gloss, hardness, salt fog, it can also realize wet on wet construction technology, to substantially increase production efficiency, energy consumption is reduced, the requirement of energy-saving and emission-reduction is met.It is tested through construction site, water-base epoxy anti-corrosion primer has sprayed 10min to be done (about 30-50 μm of thickness of dry film), i.e., sprayable aqueous double-component polyurethane finishing coat, the certainly dry 10-15min of finishing coat, 80 DEG C of baking 30min can be carried out, product can offline group of packing etc. later.
Description
Technical field
The present invention relates to technical field of coatings, more particularly to a kind of wettable matched paint and preparation method thereof for touching wet trade.
Background technique
With the deep development and reform of China's economy, automobile industry development is swift and violent, and various engineering trucks are (as cut the earth
Machine, bulk cement carrier, crane etc.), automobile carrier (such as dregs dumper, trailer), (such as harvester drags for agri-vehicle and mechanical car
Machine drawing, tricycle, seeder etc.) and the demand of all kinds of specific function vehicles (such as refuse cleaning vehicle, sprinkling truck) constantly expand
Greatly.Such vehicle area is larger, cannot achieve normal temperature self-drying after sprayed coating, it is necessary to often be painted with after one coat by drying completely
Roasting to apply subsequent coat again, complicated construction technique has seriously affected construction efficiency, moreover, stoving process energy consumption is larger, is not inconsistent
Close the production requirement of energy-saving and emission-reduction.
Wet on wet coating refers to when spraying xenogenesis paint or repeating to spray paint of the same race, omits intermediate stoving process,
Reach dry face state merely through levelling process after first pass paint spraying and just carry out down one of coating, after levelling surface drying
The coating process dried together, i.e. " two, which apply one, bakes " technique.Using wet on wet coating, not only can avoid influencing table to dry for a long time
Face effect and film performance, and the consumption of the energy can be reduced.Currently, less to the research of wet on wet water paint and existing
Water paint be difficult to meet the technique requirement of wet on wet construction, there are priming paint and overcoatability are poor, be easy to appear stream pendant, wrinkle
The problems such as line, pinprick, so that the adhesive force of paint film, glossiness and antiseptic property are poor.
Summary of the invention
Aiming at the problem that water paint is not able to satisfy wet on wet construction requirement in the prior art, the present invention provides a kind of wettable
Touch the matched paint and preparation method thereof of wet trade.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of wettable matched paint for touching wet trade, including priming paint and finishing coat,
The priming paint includes component A and B component, and component A includes the raw material components of following mass percent: water-base epoxy tree
Rouge 38-42%, deionized water 11-12%, the first cosolvent 2.5-3.5%, wetting dispersing agent 1.2-1.5%, thickener 1.1-
1.4%, anti-flash rusting agent 1.7-2.0%, the first defoaming agent 0.8-1.0%, filler 13-15%, composite zinc phosphate 5-7%, trimerization
Aluminum phosphate 8-10%, titanium dioxide 10-12% and carbon black 0.1-0.2%；
B component includes the raw material components of following mass percent: aqueous epoxy curing agent 47-53%, deionized water 37-
The 43% and second cosolvent 8-12%；
Wherein, the mass ratio of the component A and B component is 3-5:1；
The finishing coat includes including component C and D component, and component C includes the raw material components of following mass percent: aqueous hydroxyl
Base acrylic acid dispersion 60-70%, deionized water 11-21%, pH adjusting agent 0.1-0.2%, third cosolvent 2-3%, dispersion
Agent 0.8-1.2%, moistening flatting agent 0.5-0.8%, thickener 0.3-0.6%, the second defoaming agent 0.4-0.6% and pigment 3-
24%；
D component includes the raw material components of following mass percent: water-based isocyanate curing agent 70-82% and the 4th hydrotropy
Agent 18-30%；
Wherein, the mass ratio of the component C and D component is 3-5:1.
Compared with the existing technology, the wettable matched paint for touching wet trade provided by the invention, by water-base epoxy anti-corrosion primer with
Aqueous double-component polyurethane finishing coat combines, can be with while meeting the performances such as paint film apparent, gloss, hardness, salt fog
It realizes wet on wet construction technology, to substantially increase production efficiency, reduces energy consumption, meet the requirement of energy-saving and emission-reduction.Through
Construction site test, water-base epoxy anti-corrosion primer has sprayed 10min to be done (about 30-50 μm of thickness of dry film), i.e., sprayable aqueous
Dual-component polyurethane finishing coat, finishing coat can carry out 80 DEG C of baking 30min, product offline can assemble later from dry 10-15min
Packaging etc..Its gloss of film up to 85 (60 °) more than, hardness > H, adhesive force > 1 grade, salt fog resistance is up to 1000h or more (dry film
80-100 μm of thickness), for water resistance up to 30d, chemical-resistant oil resistivity etc. is good.
Preferably, aqueous dispersions of the aqueous epoxy resins for solid bisphenol A epoxy resin, solid content 41-43%,
Acid value is 10-13mg KOH/g, hydroxy radical content 4.1-4.3%.
It is furthermore preferred that the aqueous epoxy resins are the STW703A of Shanghai Xinhua resin.
Preferred aqueous epoxy resins have good corrosion resistance and water resistance and quick-drying, and what can quickly be applied again is excellent
Point can assign the overall performance characteristic of coating equilibrium.
Preferably, the water-based hydroxyl acrylic acid dispersion is copolymer and the water-based hydroxyl official of fluorine-containing hydroxyl ethyl ester monomer
The mixture of energy polyester-type dispersion, wherein the copolymer and water-based hydroxyl functional polyester type of the fluorine-containing hydroxyl ethyl ester monomer
The mass ratio of dispersion is 4-6:1.
It is furthermore preferred that the A2042 of the water-based hydroxyl acrylic acid dispersion China chemistry and XP2755 of Cohan wound, wherein
The mass ratio of the A2042 and XP2755 is 4-6:1.
The copolymer of fluorine-containing hydroxyl ethyl ester monomer can improve paint film drying property, especially with the wet on wet operation of epoxy primer
When, the drying property of paint film can be mitigated, the disadvantages such as pinprick, prickly heat, blistering, sagging are avoided；Water-based hydroxyl functional polyester type dispersion
It is reacted with isocyanate curing agent mildly, and hardness of paint film is high after solidification, and the Corrosion Protection of paint film can be improved.
Preferably, first cosolvent is dipropylene glycol methyl ether.
Preferred solvent volatile quantity is small, has extremely strong dissolving power, and nontoxic low taste has improvement levelling, adjusting paint film dry
The characteristics of dry speed.
Preferably, second cosolvent is the mixture of ethyl alcohol and dipropylene glycol methyl ether, wherein the ethyl alcohol and dipropyl
The mass ratio of glycol methyl ether is 1:0.8-1.2.
Preferred second cosolvent can be such that aqueous epoxy curing agent sufficiently dissolves, be conducive to dissolved epoxy hardener with
Component A is sufficiently mixed, be conducive to curing agent with epoxy resin is full cross-linked reacts, improve crosslinking rate, prevent epoxy hardener
It reacts with isocyanate curing agent in finishing coat；Preferred cosolvent can also quickly volatilize within the section time simultaneously, avoid bottom
Cosolvent is chemically reacted with isocyanate curing agent in finishing coat in paint, influences the appearance and performance of finishing coat.
Preferably, the third cosolvent is the mixture of dipropylene glycol methyl ether and dipropylene, wherein described two
The mass ratio of propylene glycol monomethyl ether and dipropylene is 1:1-2.
Preferred cosolvent is to the copolymer of fluorine-containing hydroxyl ethyl ester monomer and the mixing of property hydroxyl-functional polyester's type dispersion
Object has stronger swelling action, can improve the cross-linking reaction of two kinds of resins and isocyanates, make cross-linking reaction milder, and two
Kind of substance is used cooperatively, and also can avoid occurring in film forming procedure going out for low pinprick, blistering, glossiness, sagging and dry slow problem
It is existing.
Preferably, the 4th cosolvent is propylene glycol methyl ether acetate and dipropylene glycol methyl ether acetate, wherein described
The mass ratio of propylene glycol methyl ether acetate and dipropylene glycol methyl ether acetate is 1.5-2.5:1.
Preferred Fourth Ring cosolvent can be such that isocyanate curing agent sufficiently dissolves, and it is solid to be conducive to dissolved isocyanates
Agent is sufficiently mixed with component C, and is also adjustable the rate of drying of finishing coat.
Above-mentioned four kinds of cosolvents mutually cooperate with, and not only enable the solvent in priming paint in time interval between layers appropriate
It vapors away to greatest extent, shortens the interval time of twice coating process, and do not influence the crosslinking of curing agent and resin in finishing coat
Curing reaction avoids bottom surface paint from influencing each other, to guarantee the final performance of priming paint and finishing coat；Simultaneously as when coating finish,
The solvent of priming paint does not volatilize completely, and preferred four kinds of cosolvents can make that slight phenomenon of dissolving each other, bottom occur between priming paint and finishing coat
Paint and finishing coat interpenetrate, to enhance the binding force between priming paint and finishing coat.
Preferably, the wetting dispersing agent is the high molecular weight block of polyether siloxane copolymer and the affinity groups containing pigment
The mixture of copolymer, wherein the high molecular weight block copolymer of the polyether siloxane copolymer and the affinity groups containing pigment
Mass ratio be 1:0.8-1.2.
It is furthermore preferred that the wetting dispersing agent agent is the BYK-190 of the Tego100 and Bi Ke of Digao, wherein described
The mass ratio of Tego100 and BYK-190 is 1:0.8-1.2.
Preferred wetting dispersing agent has excellent substrate wettability, and excellent flowing promotion property, high-compatibility can change
The wetting of kind pigment, prevents shrinkage cavity and pigment loose colour.
Preferably, the moistening flatting agent is the mixed of the twin body structure surface active agent of organosilicon and fluorine-carbon modified acrylate
Close object, wherein the mass ratio of the twin body structure surface active agent of organosilicon and fluorine-carbon modified acrylate is 1:2.5-3.5.
It is furthermore preferred that the moistening flatting agent is the Tego 4100 of Digao and the EFKA 3772, the Tego of Efka
The mass ratio of 4100 and EFKA 3772 is 1:2.5-3.5.
Preferred moistening flatting agent can improve wetability and levelability, in high dynamic process and construction under low concentration
Foaming characteristic can be reduced in technique, by above-mentioned moistening flatting agent fit applications in finishing coat, be conducive to the smooth of wet on wet construction
It carries out.
Preferably, the thickener is the mixture of strong pseudoplastic behavior polyurethane thickener and association type polyurethane thickener,
Wherein, the mass ratio of the strong pseudoplastic behavior polyurethane thickener and association type polyurethane thickener is 1:0.8-1.2.
It is furthermore preferred that the thickener is this DeuRheo WT-204 of Borchi Gel0620 and hamming, wherein described
The mass ratio of Borchi Gel0620 and DeuRheo WT-204 are 1:0.8-1.2.
Preferred two kinds of thickeners are used cooperatively, it is ensured that splendid storage stability and sagging is greatly reduced, it can
Make coating have it is excellent can application property, be conducive to form thick coating in vertical surface construction, obtain good gloss and higher
Adhesive force.
Preferably, first defoaming agent is the mixture of polysiloxane defoaming agent and polyether silicone defoaming agent, wherein
The mass ratio of the polysiloxane defoaming agent and polyether silicone defoaming agent is 1:0.8-1.2.
It is furthermore preferred that first defoaming agent is the BYK 024 of Tego 901W and the Bi Ke chemistry of Digao, wherein described
The mass ratio of Tego 901W and BYK 024 is 1:0.8-1.2.
For preferred two kinds of defoaming agents with the use of that can effectively eliminate the micro-bubble generated in priming paint, defoaming is fast, when foam inhibition
Between it is long and good with epoxy-resin systems compatibility.
Preferably, second defoaming agent is the mixture of phosphoric acid ester defoaming agent and polyether silicone defoaming agent, wherein
The mass ratio of phosphoric acid ester defoaming agent and polyether silicone defoaming agent is 1:0.8-1.2.
It is furthermore preferred that second defoaming agent is the Tego901W of France the MOUSSEX 941PL first created and Digao,
In, the mass ratio of the MOUSSEX 941PL and Tego901W is 1:0.8-1.2.
Preferred two kinds of defoaming agents are used in mixed way, and can obtain lasting defoaming foam inhibition effect, and to paint film appearance and
Even property is free from side effects, and the appearance of the phenomenon influential on paint film appearance such as flake, volcanic crater will not be caused.
Preferably, the aqueous epoxy curing agent is the mixed of the STW 703B of Aradur3986 and Shanghai Hua Yi that Hensel steps
Close object, wherein the mass ratio of the Aradur3986 and STW 703B is 2.5-3.5:1.
Both preferred curing agent is used cooperatively, and the crosslinking rate of curing agent and aqueous epoxy resins can be improved, and is improved solid
Change rate of drying, shorten the construction time, simultaneously, moreover it is possible to improve paint film to the adhesive force of substrate, so that priming paint is for surface treatment
Not tight substrate can also provide good protective capacities.
Preferably, the water-based isocyanate curing agent is the mixing of the XP2655 and Bayhydur 401-70 of Cohan wound
Object, wherein the mass ratio of the XP2655 and Bayhydur 401-70 is 5.5-6.5:1.
Isocyanate curing agent and water-based hydroxyl polyacrylic acid dispersion are crosslinked, and the compactness of paint film and water-fast can be improved
Property.Preferred curing agent and Miscibility are good, are easy stirring, are added so that the coating of preparation has good gloss and cause
Close property.
In priming paint and finishing coat, it is required to crosslink by curing agent with-OH and reacts the final film-forming of ability, epoxy
Curing agent and isocyanate curing agent, which are likely to crosslink with the film forming matter in priming paint and finishing coat, to react, to final paint film
Appearance and performance have a adverse impact, preferred epoxy hardener and isocyanate curing agent, can make curing agent and film forming
Resin is full cross-linked, improves the compactness of paint film, and by the dosage of curing agent in control priming paint and finishing coat, can effectively avoid ring
Cross reaction occurs for oxygen curing agent and isocyanate curing agent, to avoid influencing each other for priming paint and finishing coat.
The present invention also provides the preparation method of the above-mentioned wettable matched paint for touching wet trade, the preparation method is included at least
Following steps:
Each component is weighed according to the design proportion of the above-mentioned wettable matched paint for touching wet trade,
Prepare priming paint:
Weighed deionized water, wetting dispersing agent, the first defoaming agent and the first cosolvent are uniformly mixed by step a, are added
Filler, composite zinc phosphate, aluminium triphosphate, titanium dioxide and carbon black are uniformly mixed, and are ground to fineness≤20 μm, and ground is mixed
It closes material to be added in weighed aqueous epoxy resins, be uniformly mixed, anti-flash rusting agent and thickener is added, adjust viscosity to 25 DEG C
Stormer viscosity is calculated as 80-83KU, obtains component A；
Weighed aqueous epoxy curing agent, deionized water and the second environmentally friendly solvent are uniformly mixed, obtain B component by step b；
A, B component are mixed according to design proportion, obtain priming paint by step c.
Prepare finishing coat:
Step 1: by the deionized water of weighed 75-85wt%, moistening flatting agent, third cosolvent, dispersing agent, second
The pH adjusting agent of defoaming agent and 40-60wt% are uniformly mixed, and weighed pigment is added, and are uniformly mixed, and grinding obtains fineness≤20 μm
Slurry；
Step 2: remaining deionized water will be added, the water-based hydroxyl acrylic acid dispersion is added in remaining pH adjusting agent
It in body, is uniformly mixed, the slurry is added, be uniformly mixed, thickener is added, the stormer viscosity of adjustment viscosity to 25 DEG C is calculated as
73-75KU obtains component C
Weighed isocyanate curing agent and the 4th cosolvent are uniformly mixed by step 3, obtain D component；
C, D component are mixed according to design proportion, obtain finishing coat by step 4.
Above-mentioned preparation method is easy to operate, no complicated procedures of forming, at low cost without special equipment, is suitble to industrialization big
Large-scale production, the priming paint and overcoatability of preparation are good, it can be achieved that wet on wet construction, can reduce the energy consumption of priming paint baking, reduction
The construction time of coating, while polishing for avoiding priming paint etc. is handled, to greatly reduce painting cost, improves coating enterprise
The construction efficiency and benefit of industry, have a vast market foreground.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
The embodiment of the present invention provides a kind of wettable matched paint for touching wet trade, including priming paint and finishing coat,
The priming paint includes component A and B component, and component A includes the raw material components of following mass percent: water-base epoxy tree
Rouge 38%, deionized water 11%, the first cosolvent 3.5%, wetting dispersing agent 1.5%, thickener 1.1%, anti-flash rusting agent
2.0%, the first defoaming agent 0.78%, filler 14%, composite zinc phosphate 7%, aluminium triphosphate 9%, titanium dioxide 12% and carbon black
0.12%；
B component includes the raw material components of following mass percent: aqueous epoxy curing agent 47%, deionized water 42% and
Two cosolvents 11%；
Wherein, the mass ratio of the component A and B component is 5:1；
The finishing coat includes including component C and D component, and component C includes the raw material components of following mass percent: aqueous hydroxyl
Base acrylic acid dispersion 60%, deionized water 11.5%, pH adjusting agent 0.1%, third cosolvent 2%, dispersing agent 1.2%, profit
Wet levelling agent 0.5%, thickener 0.3%, the second defoaming agent 0.4% and pigment 24%；
D component includes the raw material components of following mass percent: water-based isocyanate curing agent 70% and the 4th cosolvent
30%；
Wherein, the mass ratio of the component C and D component is 3:1.
In priming paint, the aqueous epoxy resins are the STW703A of Shanghai Xinhua resin；First cosolvent is dipropylene glycol first
Ether；Wetting dispersing agent is the BYK-190 of the Tego100 and Bi Ke of Digao, wherein the mass ratio of Tego100 and complete BYK-190 is
1:0.8；The thickener is this DeuRheo WT-204 of Borchi Gel 0620 and hamming, wherein Borchi Gel
The mass ratio of 0620 and DeuRheo WT-204 is 1:0.8；The anti-flash rusting agent is the FD160 of Shenzhen Kai Site；Described first
Defoaming agent is the BYK024 of Tego901W and the Bi Ke chemistry of Digao, wherein the mass ratio of the Tego 901W and BYK 024
For 1:1.2；The filler is the blanc fixe of 1500 mesh and the superfine talcum powder of 1250 mesh, and the two ratio is 1:1；Described
Aluminium triphosphate is the aluminium triphosphate of Weihai day wound fine chemistry industry；The composite zinc phosphate is the compound phosphoric acid of Zhuzhou Golden Bridge
Zinc；The titanium dioxide is the LR-996 of imperial boa；The carbon black is the MA100 of Mitsubishi；The aqueous epoxy curing agent is henry
The STW703B of this Aradur3986 advanced in years and Shanghai Hua Yi, wherein the mass ratio of Aradur3986 and STW703B is 2.5:1；
Second cosolvent is the mixture of ethyl alcohol and dipropylene glycol methyl ether, wherein the quality of the ethyl alcohol and dipropylene glycol methyl ether
Than for 1:0.8.
In finishing coat, the A2042 of water-based hydroxyl acrylic acid dispersion China chemistry and the XP2755 of Cohan wound, wherein institute
The mass ratio for stating A2042 and XP2755 is 4:1；The third cosolvent is the mixing of dipropylene glycol methyl ether and dipropylene
Object, wherein the mass ratio of the dipropylene glycol methyl ether and dipropylene is 1:1；The dispersing agent is BYK-190；It is described
Moistening flatting agent is the Tego 4100 of Digao and the EFKA 3772 of Efka, the mass ratio of the Tego4100 and EFKA3772
For 1:2.5；The thickener is this DeuRheo WT-204 of Borchi Gel0620 and hamming, wherein Borchi
The mass ratio of Gel0620 and DeuRheo WT-204 is 1:0.8；Second defoaming agent is the MOUSSEX that France first creates
The Tego901W of 941PL and Digao, wherein the mass ratio of the MOUSSEX 941PL and Tego901W is 1:0.8；The face
Material is titanium dioxide R-706；The water-based isocyanate curing agent is the mixing of the XP2655 and Bayhydur401-70 of Cohan wound
Object, wherein the mass ratio of the XP2655 and Bayhydur 401-70 is 5.5:1；4th cosolvent is propylene glycol monomethyl ether
Acetate and dipropylene glycol methyl ether acetate, wherein the matter of the propylene glycol methyl ether acetate and dipropylene glycol methyl ether acetate
Amount is than being 1.5:1.
The preparation step of above-mentioned priming paint is as follows:
Step a stirs weighed deionized water, wetting dispersing agent, the first defoaming agent and the first cosolvent with 800r/min
10min is mixed, filler, composite zinc phosphate, aluminium triphosphate, titanium dioxide and carbon black is then added, tells dispersion with 1000r/min
30min is added in grinder, is ground to fineness≤20 μm, and weighed aqueous epoxy resins are added in ground mixed material
In, 20min is stirred with 600r/min, sequentially adds anti-flash rusting agent and thickener, adjusts the stormer viscosity meter of viscosity to 25 DEG C
For 80-83KU, component A is obtained；
Weighed aqueous epoxy curing agent, deionized water and the second environmentally friendly solvent are uniformly mixed, obtain B component by step b；
A, B component are mixed according to design proportion, obtain priming paint by step c.
Finishing coat the preparation method is as follows:
Rapid one, the deionized water of weighed 75-85wt%, moistening flatting agent, third cosolvent, dispersing agent, second are disappeared
The pH adjusting agent of infusion and 40-60wt% are uniformly mixed, and weighed pigment is added, and are stirred 30min with 600-800r/min, are added
It is ground in grinder, obtains the slurry of fineness≤20 μm；
Step 2: remaining deionized water will be added, the water-based hydroxyl acrylic acid dispersion is added in remaining pH adjusting agent
In body, 800-1000r/min stirs 20min, is slowly added to the slurry under conditions of 1000r/min, continues to stir
20min, is added thickener, and the stormer viscosity of adjustment viscosity to 25 DEG C is calculated as 73-75KU, obtains component C
Weighed isocyanate curing agent and the 4th cosolvent are uniformly mixed by step 3, obtain D component；
C, D component are mixed according to design proportion, obtain finishing coat by step 4.
Embodiment 2
The embodiment of the present invention provides a kind of wettable matched paint for touching wet trade, including priming paint and finishing coat,
The priming paint includes component A and B component, and component A includes the raw material components of following mass percent: water-base epoxy tree
Rouge 40%, deionized water 12%, the first cosolvent 2.5%, wetting dispersing agent 1.3%, thickener 1.4%, anti-flash rusting agent
1.8%, the first defoaming agent 0.8%, filler 13%, composite zinc phosphate 6%, aluminium triphosphate 10%, titanium dioxide 11% and carbon black
0.2%；
B component includes the raw material components of following mass percent: aqueous epoxy curing agent 48%, deionized water 43% and
Two cosolvents 9%；
Wherein, the mass ratio of the component A and B component is 4:1；
The finishing coat includes including component C and D component, and component C includes the raw material components of following mass percent: aqueous hydroxyl
Base acrylic acid dispersion 65%, deionized water 16%, pH adjusting agent 0.1%, third cosolvent 2.5%, dispersing agent 1.0%, profit
Wet levelling agent 0.6%, thickener 0.5%, the second defoaming agent 0.5% and pigment 13.8%；
D component includes the raw material components of following mass percent: water-based isocyanate curing agent 76% and the 4th cosolvent
24%；
Wherein, the mass ratio of the component C and D component is 4:1.
The trade mark of each component and content are same as Example 1 in above-mentioned priming paint, unlike: wetting dispersing agent Tego100
Mass ratio with complete BYK-190 is 1:1；The mass ratio of the thickener Borchi Gel 0620 and DeuRheo WT-204 is
1:1；The mass ratio of first defoaming agent the Tego 901W and BYK 024 is 1:0.8；The aqueous epoxy curing agent
The mass ratio of Aradur3986 and STW703B is 3:1；The mass ratio of the second cosolvent ethyl alcohol and dipropylene glycol methyl ether is 1:
1。
The trade mark of each component and content are same as Example 1 in above-mentioned finishing coat, unlike: the water-based hydroxyl acrylic acid
The mass ratio of dispersion A2042 and XP2755 are 5:1；The matter of the third cosolvent dipropylene glycol methyl ether and dipropylene
Amount is than being 1:1.5；The mass ratio of the moistening flatting agent Tego 4100 and EFKA 3772 is 1:3；The thickener Borchi
The mass ratio of Gel0620 and DeuRheo WT-204 is 1:1；Second defoaming agent the MOUSSEX 941PL's and Tego901W
Mass ratio is 1:1；The mass ratio of water-based isocyanate the curing agent XP2655 and Bayhydur401-70 are 6:1；Described
The mass ratio of four co-solvents propylene glycol methyl ether acetates and dipropylene glycol methyl ether acetate is 2:1.
The preparation step of above-mentioned priming paint and finishing coat is same as Example 1, and details are not described herein again.
Embodiment 3
The embodiment of the present invention provides a kind of wettable matched paint for touching wet trade, including priming paint and finishing coat,
The priming paint includes component A and B component, and component A includes the raw material components of following mass percent: water-base epoxy tree
Rouge 42%, deionized water 11.8%, the first cosolvent 3%, wetting dispersing agent 1.2%, thickener 1.2%, anti-flash rusting agent
1.7%, the first defoaming agent 1.0%, filler 15%, composite zinc phosphate 5%, aluminium triphosphate 8%, titanium dioxide 10% and carbon black
0.1%；
B component includes the raw material components of following mass percent: aqueous epoxy curing agent 53%, deionized water 37% and
Two cosolvents 10%；
Wherein, the mass ratio of the component A and B component is 3:1；
The finishing coat includes including component C and D component, and component C includes the raw material components of following mass percent: aqueous hydroxyl
Base acrylic acid dispersion 70%, deionized water 21%, pH adjusting agent 0.2%, third cosolvent 3%, dispersing agent 0.8%, wetting
Levelling agent 0.8%, thickener 0.6%, the second defoaming agent 0.6% and pigment 3%；
D component includes the raw material components of following mass percent: water-based isocyanate curing agent 82% and the 4th cosolvent
18%；
Wherein, the mass ratio of the component C and D component is 5:1.
The trade mark of each component and content are same as Example 1 in above-mentioned priming paint, unlike: wetting dispersing agent Tego100
Mass ratio with complete BYK-190 is 1:1.2；The mass ratio of the thickener Borchi Gel 0620 and DeuRheo WT-204
For 1:1.2；The mass ratio of first defoaming agent the Tego 901W and BYK 024 is 1:1；The aqueous epoxy curing agent
The mass ratio of Aradur3986 and STW703B is 3.5:1；The mass ratio of the second cosolvent ethyl alcohol and dipropylene glycol methyl ether is
1.2:1。
The trade mark of each component and content are same as Example 1 in above-mentioned finishing coat, unlike: the water-based hydroxyl acrylic acid
The mass ratio of dispersion A2042 and XP2755 are 6:1；The matter of the third cosolvent dipropylene glycol methyl ether and dipropylene
Amount is than being 1:2；The mass ratio of the moistening flatting agent Tego 4100 and EFKA 3772 is 1:3.5；The thickener Borchi
The mass ratio of Gel0620 and DeuRheo WT-204 is 1:1.2；Second the defoaming agent MOUSSEX941PL's and Tego901W
Mass ratio is 1:1.2；The mass ratio of water-based isocyanate curing agent XP2655 and the Bayhydur 401-70 is 6.5:1；Institute
The mass ratio for stating the 4th co-solvents propylene glycol methyl ether acetate and dipropylene glycol methyl ether acetate is 2.5:1.
The preparation step of above-mentioned priming paint and finishing coat is same as Example 1, and details are not described herein again.
Comparative example 1
This comparative example provides a kind of wettable matched paint for touching wet trade, including priming paint and finishing coat, priming paint and finishing coat and implementation
Example 2 is identical, the difference is that the first cosolvent is butyl glycol ether in priming paint.
Comparative example 2
This comparative example provides a kind of wettable matched paint for touching wet trade, including priming paint and finishing coat, priming paint and finishing coat and implementation
Example 2 is identical, the difference is that the first cosolvent is propandiol butyl ether in priming paint.
Matched paint in the above various embodiments is tested for the property, the results are shown in Table 1.
Table 1
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 |
| Primer dry films thickness/μm | 35 | 36 | 35 | 30 | 33 |
| Compound figure layer dried film thickness/μm | 83 | 85 | 85 | 81 | 83 |
| Finishing coat gloss/60 ° | 86 | 87 | 86 | 89 | 82 |
| Pencil hardness | H | H | H | H | H |
| Adhesive force/grade | 1 | 1 | 0 | 2 | 2 |
| Surface effect | Well | Well | Well | There is pinprick | Blistering |
| Priming paint application property | Well | Well | Well | Well | Well |
| Finishing coat application property | Well | Well | Well | Well | Well |
| Priming paint pot-life | 3h | 3h | 3h | 4h | 3.5h |
| Finishing coat pot-life | 3h | 3h | 3h | 3h | 3h |
| Artificial ageing resistance/h | 1200 | 1200 | 1200 | 1200 | 1200 |
| Salt fog resistance/h | 1000 | 1000 | 1000 | 480 | 480 |
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of wettable matched paint for touching wet trade, which is characterized in that including priming paint and finishing coat,
The priming paint includes component A and B component, and component A includes the raw material components of following mass percent: aqueous epoxy resins
38-42%, deionized water 11-12%, the first cosolvent 2.5-3.5%, wetting dispersing agent 1.2-1.5%, thickener 1.1-
1.4%, anti-flash rusting agent 1.7-2.0%, the first defoaming agent 0.8-1.0%, filler 13-15%, composite zinc phosphate 5-7%, trimerization
Aluminum phosphate 8-10%, titanium dioxide 10-12% and carbon black 0.1-0.2%；B component includes the raw material components of following mass percent:
Aqueous epoxy curing agent 47-53%, deionized water 37-43% and the second cosolvent 8-12%；
Wherein, the mass ratio of the component A and B component is 3-5:1；
The finishing coat includes including component C and D component, and component C includes the raw material components of following mass percent: water-based hydroxyl third
Olefin(e) acid dispersion 60-70%, deionized water 11-21%, pH adjusting agent 0.1-0.2%, third cosolvent 2-3%, dispersing agent
0.8-1.2%, moistening flatting agent 0.5-0.8%, thickener 0.3-0.6%, the second defoaming agent 0.4-0.6% and pigment 3-
24%；D component includes the raw material components of following mass percent: water-based isocyanate curing agent 70-82% and the 4th cosolvent
18-30%；
Wherein, the mass ratio of the component C and D component is 3-5:1.
2. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that the aqueous epoxy resins are solid
The aqueous dispersions of bisphenol A epoxide resin, solid content 41-43%, acid value are 10-13mg KOH/g, hydroxy radical content 4.1-
4.3%；And/or
The water-based hydroxyl acrylic acid dispersion is the copolymer and water-based hydroxyl functional polyester type point of fluorine-containing hydroxyl ethyl ester monomer
The mixture of granular media, wherein the copolymer of the fluorine-containing hydroxyl ethyl ester monomer and the matter of water-based hydroxyl functional polyester type dispersion
Amount is than being 4-6:1.
3. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that first cosolvent is dipropyl two
Alcohol methyl ether；And/or
Second cosolvent is the mixture of ethyl alcohol and dipropylene glycol methyl ether, wherein the ethyl alcohol and dipropylene glycol methyl ether
Mass ratio is 1:0.8-1.2.
4. the wettable matched paint for touching wet trade as claimed in claim 3, which is characterized in that the third cosolvent is dipropyl two
The mixture of alcohol methyl ether and dipropylene, wherein the mass ratio of the dipropylene glycol methyl ether and dipropylene is 1:
1-2；And/or
4th cosolvent is propylene glycol methyl ether acetate and dipropylene glycol methyl ether acetate, wherein the propylene glycol monomethyl ether
The mass ratio of acetate and dipropylene glycol methyl ether acetate is 1.5-2.5:1.
5. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that the wetting dispersing agent is polyethers silicon
The mixture of the high molecular weight block copolymer of siloxane copolymers and the affinity groups containing pigment, wherein the polyether silicone is total
The mass ratio of the high molecular weight block copolymer of polymers and the affinity groups containing pigment is 1:0.8-1.2.
6. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that the moistening flatting agent is organosilicon
The mixture of twin body structure surface active agent and fluorine-carbon modified acrylate, wherein the twin body structure surface activity of organosilicon
The mass ratio of agent and fluorine-carbon modified acrylate is 1:2.5-3.5.
7. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that the thickener is poly- for strong pseudoplastic behavior
The mixture of urethane thickener and association type polyurethane thickener, wherein the strong pseudoplastic behavior polyurethane thickener and association type
The mass ratio of polyurethane thickener is 1:0.8-1.2.
8. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that first defoaming agent is poly- silicon oxygen
The mixture of alkane defoaming agent and polyether silicone defoaming agent, wherein the polysiloxane defoaming agent and polyether silicone defoaming agent
Mass ratio be 1:0.8-1.2；And/or
Second defoaming agent is the mixture of phosphoric acid ester defoaming agent and polyether silicone defoaming agent, wherein phosphoric acid ester disappears
The mass ratio of infusion and polyether silicone defoaming agent is 1:0.8-1.2.
9. the wettable matched paint for touching wet trade as described in claim 1, which is characterized in that the aqueous epoxy curing agent is henry
The mixture of the STW703B of this Aradur3986 advanced in years and Shanghai Hua Yi, wherein the Aradur3986's and Shanghai Hua Yi
The mass ratio of STW703B is 2.5-3.5:1；And/or
The water-based isocyanate curing agent is the mixture of the XP2655 and Bayhydur401-70 of Cohan wound, wherein described
The mass ratio of XP2655 and Bayhydur401-70 is 5.5-6.5:1.
10. a kind of preparation method of the wettable matched paint for touching wet trade, which is characterized in that at least include the following steps, according to power
Benefit requires the design of any one of 1-9 wettable matched paint for touching wet trade to match and weighs each component,
Prepare priming paint:
Weighed deionized water, wetting dispersing agent, the first defoaming agent and the first cosolvent are uniformly mixed by step a, and addition is filled out
Material, composite zinc phosphate, aluminium triphosphate, titanium dioxide and carbon black are uniformly mixed, and fineness≤20 μm are ground to, by ground mixing
Material is added in weighed aqueous epoxy resins, is uniformly mixed, and is added anti-flash rusting agent and thickener, adjustment viscosity to this of 25 DEG C
It asks silent viscosity to be calculated as 80-83KU, obtains component A；
Weighed aqueous epoxy curing agent, deionized water and the second environmentally friendly solvent are uniformly mixed, obtain B component by step b；
A, B component are mixed according to design proportion, obtain priming paint by step c.
Prepare finishing coat:
Step 1: by the deionized water of weighed 75-85wt%, moistening flatting agent, third cosolvent, dispersing agent, the second defoaming
The pH adjusting agent of agent and 40-60wt% are uniformly mixed, and weighed pigment is added, and are uniformly mixed, and grinding obtains the slurry of fineness≤20 μm
Material；
Step 2: remaining deionized water will be added, remaining pH adjusting agent is added in the water-based hydroxyl acrylic acid dispersion,
It is uniformly mixed, the slurry is added, be uniformly mixed, thickener is added, the stormer viscosity of adjustment viscosity to 25 DEG C is calculated as 73-
75KU obtains component C
Weighed isocyanate curing agent and the 4th cosolvent are uniformly mixed by step 3, obtain D component；
C, D component are mixed according to design proportion, obtain finishing coat by step 4.
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Application publication date: 20190712 |