CN108948992A - A kind of large arch dam, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white - Google Patents
A kind of large arch dam, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white Download PDFInfo
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- CN108948992A CN108948992A CN201810503243.5A CN201810503243A CN108948992A CN 108948992 A CN108948992 A CN 108948992A CN 201810503243 A CN201810503243 A CN 201810503243A CN 108948992 A CN108948992 A CN 108948992A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D5/002—Priming 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
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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
- C09D7/65—Additives macromolecular
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of large arch dams, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, and PH regulator is added after dispersion by the way that dispersing agent to be added in deionized water, defoaming agent high speed dispersion is then added, adds solid powder high speed dispersion;Water-based hydroxyl acrylic emulsion, aqueous polyurethane polyol dispersions are added in another new stock pot, the mixture of neutralizer and deionized water is added with middling speed, lotion is made;Defoaming agent and moistening flatting agent are added to the dispersion of lotion high speed, it is spare that mixed solution c is made;The white slurry of preparation is added in mixed solution c, deionized water, auxiliary rheological agents are then sequentially added, component A is made;Water dispersed isocyanate, cosolvent are uniformly mixed obtained B component;Component A and B component are uniformly mixed according to the ratio of 10:1, obtain environment-friendly water-based priming paint.Aqueous priming paint prepared by the present invention has the advantages that low cost, environment protecting is good, stability is good, practical.
Description
Technical field
The invention belongs to paint fields, and in particular to a kind of large arch dam, economical anti-tannic acid two-component white environment-protective water
Property priming paint.
Background technique
With people to environmental protection and health requirement increasingly raising, and both at home and abroad environmental regulation constantly improve and add
By force, water-borne wood coating is increasingly by everybody attention.Water-borne wood coating is a kind of coating using water as decentralized medium, tool
There are non-ignitable, nontoxic, free from environmental pollution, the saving energy, wide market.But traditional single-component woodenware coating by
In that there are hardness is low, fillibility is poor, and especially winter is not easy to construct at a lower temperature, easily occurs paint film cracking etc. after construction and asks
Topic, it is difficult to be widely applied, and traditional single-component water-based based white primer is answered due to containing the problems such as low, closure is bad admittedly
When for rough closing coating, it often occur the problem that doing totally-enclosed effect needs multiple tracks to spray, this direct knot
Fruit is exactly construction cost raising, and poor for the closure of easy xanthochromia timber (red oak);Some two-component based white primer performances are good
But expensive client does not receive and that there is also storage stabilities is bad, there are a large amount of precipitatings etc. and asks in a period of time based white primer
Topic, and consumer wants to guarantee to reduce construction times Wei cost is reduced while closure.This requires we research and develop it is a
Large arch dam, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, and indices reach national standard GB/T23999-
2009。
The many woodwork coatings in present China still use solvent type to paint, and are primarily present following technical bottleneck:
1) existing with painting based on solvent type, need to solve to paint VOC content height, it is seriously polluted and fire hazard to ask
Topic;2) existing aqueous double-component woodwork coating has that the curing agent addition defensive position property stirred is poor, pot-life is short;3) existing water
Property two-component woodwork coating causes construction cost to ramp since curing agent additive amount is more;4) existing water-borne wood coating produces
The richness of product, fillibility have a certain gap compared with solvent based product, cause decorative effect poor;5) existing seldom to be examined with paint
Consider the sealing effect to easy xanthochromia plate.
Therefore, how to provide it is a kind of for overcome prior art defect environment-friendly water-based priming paint become those skilled in the art
The technical issues of urgent need to resolve.
Summary of the invention
In view of this, the environment-protective water good and practical the present invention provides a kind of at low cost, large arch dam, sealing effect
Property priming paint.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of large arch dam, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, each component is by weight percentage
It calculates as follows:
Component A:
Water-based hydroxyl acrylic emulsion 30-40%
Aqueous polyurethane polyol dispersions 7-10%
Solid powder 45-50%
PH regulator 0.1-0.2%
Defoaming agent 0.4-0.6%
Moistening flatting agent 0.3-0.5%
Dispersing agent 1-2%
Deionized water 5-8%
Auxiliary rheological agents 0.1-0.3%;
B component:
Water dispersed isocyanate 60-80%
Cosolvent 20-40%.
Preferably, each component is as follows count by weight percentage:
Component A:
Water-based hydroxyl acrylic emulsion 32-38%
Aqueous polyurethane polyol dispersions 8-9%
Solid powder 47-49%
PH regulator 0.15-0.18%
Defoaming agent 0.45-0.5%
Moistening flatting agent 0.35-0.4%
Dispersing agent 1.5-1.8%
Deionized water 6-7%
Auxiliary rheological agents 0.15-0.25%;
B component:
Water dispersed isocyanate 65-75%
Cosolvent 25-35%.
Preferably, each component is as follows count by weight percentage:
Component A:
Water-based hydroxyl acrylic emulsion 35%
Aqueous polyurethane polyol dispersions 8.5%
Solid powder 47%
PH regulator 0.15%
Defoaming agent 0.5%
Moistening flatting agent 0.4%
Dispersing agent 1.5%
Deionized water 6.5%
Auxiliary rheological agents 0.2%;
B component:
Water dispersed isocyanate 70%
Cosolvent 30%.
Preferably, the water-based hydroxyl acrylic emulsion is hydroxypropyl latex A C2598, AC31 and Royal DSM of Opel enlightening
XK103's is one or more;The aqueous polyurethane polyol dispersions are one kind that XP2766, XP2755, A2601 are created in Cohan
Or it is a variety of.
Preferably, the solid powder is domestic rutile type titanium white, 1250 mesh talcum powder;The PH regulator is
One or both of dimethylethanolamine, AMP-95;The defoaming agent is BYK-024, the TEGO902W of BYK, TEGO810's
It is one or more.
Preferably, the moistening flatting agent is one of Tego-4100, BYK-346, TEGO270 of TEGO or more
Kind;The dispersing agent is the TEGO755W, fast easy to be one or more of Digao.
Preferably, the auxiliary rheological agents are the mixture of polyurethane-type the thickener PUR40 and PUR62 of bright icepro;It is described
Water dispersed isocyanate be Baeyer 305,401-70, XP2655 it is one or more.
Preferably, the cosolvent is propylene glycol methyl ether acetate, dimethyl ether, the propylene glycol diacetate of Tao Shi
It is one or more.
A kind of preparation method of large arch dam, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, which is characterized in that
Include the following steps:
The preparation of component A: deionized water the preparation of white slurry: step a: is added in dispersing agent according to raw material proportioning described above
Middling speed is added PH regulator after dispersing 10-15 minutes and continues dispersion 5-10 minutes, and defoaming agent high speed dispersion 10-15 is then added
Minute, it adds solid powder high speed dispersion 15-20 minutes, mixing addition grinder is finally ground to fineness≤20 μm, it is standby
With;
Step b: according to raw material proportioning described above by water-based hydroxyl acrylic emulsion, aqueous polyurethane polyol dispersions
It is added in another new stock pot, the mixture of 0.2-0.3% neutralizer and 0.2-0.3% deionized water is added with middling speed, in
Hasten dispersion 5 minutes, and lotion is made;
Step c: defoaming agent and moistening flatting agent are added in lotion made from step b according to raw material proportioning described above
High speed dispersion 10-15 minutes, it is spare that mixed solution c is made;
Step d: white slurry prepared by step a, which is added to middling speed in mixed solution c, to be dispersed 15-20 minutes;Then successively add
Enter 2-3% deionized water, auxiliary rheological agents, the speed of 1000r/min stirs 10-15 minutes, and A group is made in adjustment viscosity to qualification
Point;(component proportion for the deionized water being added in neutralizer, deionized water and the step d being added in step b in the present invention is
Proportion based on the raw material weight that component A is integrally added);
The preparation of B component: water dispersed isocyanate, cosolvent are uniformly mixed according to raw material proportioning described above and are made
B component;
The preparation of aqueous priming paint: component A and B component are uniformly mixed according to the ratio of 10:1, obtain environment-friendly water-based bottom
Paint.
Preferably, finished product paint fineness of the present invention is≤20um, and viscosity is 45-50S (25 DEG C), pH 8-9.
The invention has the advantages that:
1, the polyurethane resin for selecting aqueous high hydroxyl value acrylic emulsion compound property excellent, obtain excellent water-resistance and
The coating of chemical-resistant, wherein the aqueous priming paint VOC≤80g/L prepared, smell is extremely low, prevents pollution environment.
2, dispersing agent TEGO755W and fast easily collocation are selected, suitable auxiliary rheological agents is used cooperatively, makes the steady of whole system
Qualitative to be greatly improved, 50 DEG C of heat storages do not occur soft precipitation in 10 days.
3, it selects the acrylic emulsion of high hydroxyl value to improve the crosslink density of paint film, and does not add volatile film forming and help
Agent, paint film property have both with environmental-protecting performance.
4, water-base resin system (water-based hydroxyl acrylic emulsion, aqueous polyurethane polyol dispersions) are selected, VOC≤
80g/L, smell is extremely low, more more environmentally-friendly than existing water-borne wood coating;
5, the talcum powder for selecting a high proportion of domestic rutile titanium dioxide and super quality and competitive price, had both solved asking for fillibility
Topic greatly reduces production cost again.
6, the powder for selecting in solid resin and white slurry containing height and Jing Guo specially treated up to 80% or more makes entire
The anti-tannic acid performance of coating system can get a promotion, and grinability is excellent.
7, the dispersions of polyurethanes of low hydroxyl in the acrylic emulsion compounding of high hydroxyl value is selected, paint film property is excellent, hardness pole
Height can reach H;Curing agent selects the isocyanates of splendid, the high NCO content of the hand property stirred, and additive amount A:B=10:1 drops significantly
Low production cost and improve convenience for construction.
8, the preparation step of the invention for preparing aqueous priming paint is simple, reliable, low for equipment requirements, is suitable for industrial-scale
Production.
Specific embodiment
Below in conjunction with the embodiment of the present invention, complete, clearly description is carried out to technical solution of the present invention.
Embodiment 1
The preparation of component A: step a: the preparation of white slurry: middling speed in 1% 5% deionized water of fast easily addition is dispersed 10 minutes
After be added 0.1% dimethylethanolamine continue dispersion 5 minutes, then be added 0.4%BYK-024 high speed dispersion 10 minutes, then plus
Enter 45% domestic rutile type titanium white high speed dispersion 15 minutes, mixing addition grinder be finally ground to fineness≤20 μm,
It is spare;
Step b: the AC31 of 30% Opel enlightening, 7% Cohan wound A2601 are added in another new stock pot, with middling speed plus
Enter the mixture of 0.2% dimethylethanolamine and 0.2% deionized water, in hasten dispersion 5 minutes, be made lotion;
Step c: 0.4%BKY-024 and 0.3%BKY-346 are added to lotion high speed made from step b and disperse 10 points
It is spare that mixed solution c is made in clock;
Step d: white slurry prepared by step a, which is added to middling speed in mixed solution c, to be dispersed 15 minutes;Then it sequentially adds
The speed of 2% deionized water, 0.1%PUR62,1000r/min stirs 10 minutes, and component A is made in adjustment viscosity to qualification;
The preparation of B component: the 305 of 60% Baeyer, 40% propylene glycol methyl ether acetate is uniformly mixed obtained B component;
Component A and B component are uniformly mixed according to the ratio of 10:1 finally, obtain environment-friendly water-based priming paint.
Embodiment 2
The preparation of component A: middling speed in 8% deionized water the preparation of white slurry: step a: is added in the TEGO755W of 2% Digao
0.2%AWP-95 is added after dispersion 15 minutes and continues dispersion 10 minutes, 0.6%TEG0902W high speed dispersion 15 is then added and divides
Clock, adds 50%1250 mesh talcum powder high speed dispersion 20 minutes, and mixing addition grinder is finally ground to fineness≤20 μm,
It is spare;
Step b: AC2598,10%XP2755 of 40% Opel enlightening are added in another new stock pot, are added with middling speed
The mixture of 0.3%AWP-95 and 0.3% deionized water, in hasten dispersion 5 minutes, be made lotion;
Step c: 0.6%TEG0810 and 0.5%TEG0270 are added to lotion high speed made from step b and disperse 15 points
It is spare that mixed solution c is made in clock;
Step d: white slurry prepared by step a, which is added to middling speed in mixed solution c, to be dispersed 20 minutes;Then it sequentially adds
The speed of 3% deionized water, 0.3%PUR62,1000r/min stirs 15 minutes, and component A is made in adjustment viscosity to qualification;
The preparation of B component: 80%XP2655,20% propylene glycol diacetate are uniformly mixed obtained B component;
Component A and B component are uniformly mixed according to the ratio of 10:1 finally, obtain environment-friendly water-based priming paint.
Embodiment 3
The preparation of component A: step a: the preparation of white slurry: by middling speed dispersion 10 in 1.5% 6.5% deionized water of fast easily addition
0.15% dimethylethanolamine is added after minute and continues dispersion 10 minutes, 0.5%TEG0810 high speed dispersion 10 is then added and divides
Clock, adds 47%1250 mesh talcum powder high speed dispersion 20 minutes, and mixing addition grinder is finally ground to fineness≤20 μm,
It is spare;
Step b: 35% Royal DSM XK103,8.5% Cohan wound A2601 are added in another new stock pot, with middling speed plus
Enter the mixture of 0.2%AMP-95 and 0.2% deionized water, in hasten dispersion 5 minutes, be made lotion;
Step c: 0.5%TEG0810 and 0.4%TEG0270 are added to lotion high speed made from step b and disperse 10 points
It is spare that mixed solution c is made in clock;
Step d: white slurry prepared by step a, which is added to middling speed in mixed solution c, to be dispersed 20 minutes;Then it sequentially adds
The speed of 3% deionized water, 0.2%PUR62,1000r/min stirs 15 minutes, and component A is made in adjustment viscosity to qualification;
The preparation of B component: 70%XP2655,30% propylene glycol diacetate are uniformly mixed obtained B component;
Component A and B component are uniformly mixed according to the ratio of 10:1 finally, obtain environment-friendly water-based priming paint.
The aqueous priming paint of above-described embodiment 1-3 preparation is tested for the property, test result is shown in Table 1:
Table 1
As it can be seen from table 1 environment-friendly water-based priming paint surface drying time prepared by 1-3 of the embodiment of the present invention is short, easy to polish, tool
There are good practicability, anti-tannic acid performance and filling capacity, solves the technical problems existing in the prior art.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of large arch dam, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, which is characterized in that each component is by weight
Percentage calculates as follows:
2. a kind of large arch dam according to claim 1, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, special
Sign is that each component is as follows count by weight percentage:
3. a kind of large arch dam according to claim 1, the environment-friendly water-based priming paint of economical anti-tannic acid two-component white, special
Sign is that each component is as follows count by weight percentage:
4. a kind of large arch dam according to claim 1-3, economical anti-tannic acid two-component white are environment-friendly water-based
Priming paint, which is characterized in that the water-based hydroxyl acrylic emulsion is hydroxypropyl latex A C2598, AC31 and Supreme Being Si of Opel enlightening
Graceful XK103's is one or more;The aqueous polyurethane polyol dispersions are that Cohan creates the one of XP2766, XP2755, A2601
Kind is a variety of.
5. a kind of large arch dam according to claim 1-3, economical anti-tannic acid two-component white are environment-friendly water-based
Priming paint, which is characterized in that the solid powder is domestic rutile type titanium white, 1250 mesh talcum powder;The PH regulator
For one or both of dimethylethanolamine, AMP-95;The defoaming agent is the BYK-024, TEGO902W, TEGO810 of BYK
It is one or more.
6. a kind of large arch dam according to claim 1-3, economical anti-tannic acid two-component white are environment-friendly water-based
Priming paint, which is characterized in that the moistening flatting agent is one of Tego-4100, BYK-346, TEGO270 of TEGO or more
Kind;The dispersing agent is the TEGO755W, fast easy to be one or more of Digao.
7. a kind of large arch dam according to claim 1-3, economical anti-tannic acid two-component white are environment-friendly water-based
Priming paint, which is characterized in that the auxiliary rheological agents are the mixture of polyurethane-type the thickener PUR40 and PUR62 of bright icepro;Institute
State water dispersed isocyanate be Baeyer 305,401-70, XP2655 it is one or more.
8. a kind of large arch dam according to claim 1-3, economical anti-tannic acid two-component white are environment-friendly water-based
Priming paint, which is characterized in that the cosolvent is propylene glycol methyl ether acetate, dimethyl ether, the propylene glycol diethyl of Tao Shi
Ester it is one or more.
9. a kind of such as a kind of described in any item large arch dams of claim 1-8, economical anti-tannic acid two-component white environment-protective water
The preparation method of property priming paint, which comprises the steps of:
The preparation of component A: step a: the preparation of white slurry: according to raw material proportioning described in claim 1-8 by dispersing agent addition go from
PH regulator is added after middling speed is dispersed 10-15 minutes in sub- water and continues dispersion 5-10 minutes, defoaming agent high speed dispersion is then added
It 10-15 minutes, adds solid powder high speed dispersion 15-20 minutes, mixing addition grinder is finally ground to fineness≤20 μ
M, it is spare;
Step b: water-based hydroxyl acrylic emulsion, aqueous polyurethane polyalcohol are divided according to raw material proportioning described in claim 1-8
Granular media is added in another new stock pot, and the mixing of 0.2-0.3% neutralizer and 0.2-0.3% deionized water is added with middling speed
Object, in hasten dispersion 5 minutes, be made lotion;
Step c: defoaming agent and moistening flatting agent are added to cream made from step b according to raw material proportioning described in claim 1-8
Liquid high speed is dispersed 10-15 minutes, and it is spare that mixed solution c is made;
Step d: white slurry prepared by step a, which is added to middling speed in mixed solution c, to be dispersed 15-20 minutes;Then 2- is sequentially added
The speed of 3% deionized water, auxiliary rheological agents, 1000r/min stirs 10-15 minutes, and component A is made in adjustment viscosity to qualification;
The preparation of B component: water dispersed isocyanate, cosolvent are uniformly mixed according to raw material proportioning described in claim 1-8
B component is made;
The preparation of aqueous priming paint: component A and B component are uniformly mixed according to the ratio of 10:1, obtain environment-friendly water-based priming paint.
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CN113480926A (en) * | 2019-05-21 | 2021-10-08 | 河北晨阳工贸集团有限公司 | High-resistance double-component environment-friendly water-based matte clear finish paint |
CN113801561A (en) * | 2020-06-15 | 2021-12-17 | 广东华润涂料有限公司 | Two-component aqueous coating composition and wood product |
CN113801561B (en) * | 2020-06-15 | 2022-08-09 | 广东华润涂料有限公司 | Two-component aqueous coating composition and wood product |
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