CN106478860A - One kind has excellent aluminium powder directionality water-borne acrylic resin and preparation and its coating - Google Patents
One kind has excellent aluminium powder directionality water-borne acrylic resin and preparation and its coating Download PDFInfo
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- CN106478860A CN106478860A CN201611072422.5A CN201611072422A CN106478860A CN 106478860 A CN106478860 A CN 106478860A CN 201611072422 A CN201611072422 A CN 201611072422A CN 106478860 A CN106478860 A CN 106478860A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
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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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
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Abstract
The invention belongs to cold coating technical field, disclose and a kind of there is excellent aluminium powder directionality water-borne acrylic resin and preparation method and the aluminium paint based on it and the application in aluminium section bar water paint.Resin of the present invention is prepared by including following components：(1) acrylic monomer of all monomers 60～99%：The hydroxy acids monomer of the carboxy acrylic class monomer including all total monomer weights 5～10% and all monomers 15～25% and other acrylic monomers；(2) the vinyl aromatic monomer of all monomers 0～25%；(3) initiator of all monomers 0.5～3%；(4) cosolvent of all monomers 5～40%；(5) nertralizer of all monomers 0.5～2%；(6) water；All monomers are made up of (1)～(3).Aluminium paint aluminium powder directionality based on resin of the present invention are good, and adhesive force is excellent, and paint film metal sense is strong, and glossiness is good, and corrosion resistance is strong.
Description
Technical field
The invention belongs to cold coating technical field, particularly to one kind, there is excellent aluminium powder directionality water soluble acrylic acid tree
Fat and preparation method and the aluminium paint based on it and the application in aluminium section bar water paint.
Background technology
With the continuous enhancing of people's environment and health perception, water paint is increasingly subject to pay attention to.Paint field at this stage
Water-borne modification be concentrated mainly on woodwork coating, original factory of vehicle coating, large-scale steel structure, the field of coating such as engineering truck, locomotive
There is the trend turning to Water-borne modification.But in aluminum profile industry, mainly powdery paints and the fluorocarbon coating of use, water paint exists
The occupation rate of aluminum profile industry is almost nil.
The advantage of powdery paints is mainly solvent-free, pollution-free, recyclable, environmental protection, save energy and resource, lighten one's labor
Intensity and coating machinery intensity height etc.；But its shortcoming is similarly obvious, the aluminium paint made with powdery paints, aluminium powder arranges
Difference, aluminium powder blacks, and metal-like is poor.The advantage of fluorocarbon coating is mainly excellent Corrosion Protection, overlength weatherability etc., due to
Fluorocarbon coating biases toward feature, is relatively short of in dicoration.
Thus the fast lifting of the development with building industry and people's living standard, the decoration to aluminum profile paint for the market
Property is put forward higher requirement.And aluminium paint is received by the market due to its metal-like.
Chinese patent CN 101693804 A discloses a kind of aqueous acrylic-amino resin aluminium paint, and this aluminium paint is by water
Property acrylic resin, amino resins, aqueous aluminum powder, aqueous defoamer, amine nertralizer and deionized water composition, but patent is simultaneously
Do not introduce the synthesis of water-borne acrylic resin.
Chinese patent CN 101429319 A discloses a kind of aqueous acrylic modified saturated polyester, its preparation method and water
Property baking aluminium paint, with water-borne acrylic resin, aqueouss saturated polyester resin compositionss, epoxy resin and amino resins as film forming
Thing, coloring thing is in oiliness aluminium powder application and water-based system after preparation, has that high rigidity, damage resistant, adhesive force is strong, salt tolerant
Mist, salt water resistance, acid and alkali-resistance, ageing-resistant etc.；But this water-base resin be by water-borne acrylic resin, aqueouss saturated polyester resin,
Aqueous epoxy resins mix, and belong to physical modification, rather than chemosynthesis.
Content of the invention
In order to overcome the shortcoming of above-mentioned prior art with not enough, the primary and foremost purpose of the present invention is to provide one kind to have excellent
Aluminium powder directionality water-borne acrylic resin.
Another object of the present invention is to provide a kind of preparation method of above-mentioned water-borne acrylic resin.
Still a further object of the present invention is to provide a kind of aluminium paint based on above-mentioned water-borne acrylic resin.This coating steady
Qualitative good, aluminium powder directionality are good.
Still a further object of the present invention is to provide application in aluminium section bar water paint for the above-mentioned water-borne acrylic resin.
The purpose of the present invention is realized by following proposal：
One kind has excellent aluminium powder directionality water-borne acrylic resin, is prepared by including following components：
(1) acrylic monomer, consumption is the 60～99% of all total monomer weights；Described acrylic monomer includes carboxylic
Base acrylic monomer and hydroxy acids monomer and other acrylic monomers, wherein carboxy acrylic class monomer accounts for institute
Have the 5～10% of total monomer weight, hydroxy acids monomer accounts for the 15～25% of all total monomer weights；
(2) vinyl aromatic monomer, consumption is the 0～25% of all total monomer weights；
(3) initiator, consumption is the 0.5～3% of all total monomer weights；
(4) cosolvent, consumption is the 5～40% of all total monomer weights；
(5) nertralizer, consumption is the 0.5～2% of all total monomer weights；
(6) water；
Above-mentioned all components weight is solid weight；Group packet listed by above-mentioned (1)～(3) for the described all monomers
Become.
Wherein in an embodiment, described carboxy acrylic class monomer includes acrylic acid, methacrylic acid and itaconic acid
In at least one.
Wherein in an embodiment, described hydroxy acids monomer includes (methyl) 2-(Acryloyloxy)ethanol, (methyl)
At least one in Hydroxypropyl acrylate and hy-droxybutyl.
Wherein in an embodiment, other acrylic monomers described include acrylic compounds soft or hard monomer and acrylic compounds
Function monomer.
Wherein in an embodiment, described acrylic compounds soft or hard monomer is (methyl) alkyl acrylate；More preferably
(methyl) acrylic acid methyl ester., (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl)
At least one in lauryl acrylate and (methyl) isobornyl acrylate.
Wherein in an embodiment, described acrylic compounds function monomer includes amide groups acrylic monomer, epoxy
Base acrylic monomerss, phosphate-based acrylic monomer, aminoacrylic acid class monomer；
Wherein, described amide groups acrylic monomer is (methyl) acrylamide, N-[2-(2-methyl-4-oxopentyl), N- methylol
Acrylamide and N, at least one in N- DMAA；
Described epoxy radicals acrylic monomer is in glycidyl methacrylate and tertiary carbonic acid glycidyl ester
At least one；
Described phosphate-based acrylic monomer is (methyl) acrylic acid (alkoxyl) phosphate ester and 2- ethoxy (first
Base) at least one in acrylate phosphate；
Described aminoacrylic acid class monomer is dimethylaminoethyl methacrylate.
Wherein in an embodiment, described vinyl aromatic monomer includes styrene, α-methyl styrene and uncle 3-
At least one in butylstyrene.
Wherein in an embodiment, described initiator is azo compound or organic peroxide；
Wherein, described azo compound can be azodiisobutyronitrile, 2,2'-Azobis(2,4-dimethylvaleronitrile), AMBN, idol
At least one in nitrogen isobutyl cyano group Methanamide and azo-bis-iso-dimethyl；
Described organic peroxide can for benzoyl peroxide, cumyl peroxide, di-tert-butyl peroxide, two
At least one in tertiary amyl peroxide, isopropyl benzene hydroperoxide.
Described cosolvent can for ethylene glycol monobutyl ether, glycol monoethyl ether, propylene glycol monomethyl ether or diethylene glycol dimethyl ether,
At least one in propandiol butyl ether, dipropylene, isopropanol.
Described nertralizer is alkali compoundss, for unnecessary carboxylic acid in neutralization system, can be ammonia, dimethyl ethanol
At least one in amine, 2-amino-2-methyl-1-propanol and triethylamine.
The present invention also provides a kind of preparation method of above-mentioned water-borne acrylic resin, comprises the following steps：
(1) acrylic monomer is uniformly mixed, obtains mixture A；
(2) by the cosolvent of 15～50wt% and initiator mix homogeneously, obtain mixture B；
(3) mixture A and mixture B is added drop-wise in the remaining cosolvent being preheated to 80～140 DEG C, obtains polymer C,
Insulation 1～5 hour；
(4) polymer C is cooled to 50～100 DEG C, adds nertralizer, stir；
(5) it is cooled to 40～80 DEG C, add water, obtain water-borne acrylic resin.
The time for adding of mixture A described in step (3) is preferably 2～6 hours；The time for adding of described mixture B is excellent
Elect 2.5～6.5 hours as.
Step (5) is described to add water preferably to drip in 0.5～2.5 hour.The amount of water used is solid according to final products
Content needs to adjust accordingly.
Above-mentioned preparation method is preferably carried out under nitrogen protection.
The number-average molecular weight of water-borne acrylic resin of the present invention is 1000～40000, preferably 2000～30000；Vitrification
Transition temperature Tg is -20～60 DEG C, preferably 0～50 DEG C；Solid content is 20～50%, preferably 30～40%；Viscosity be 200～
60000cps, preferably 500～50000cps；Mean diameter is 50～300nm, preferably 100～250nm.
The present invention also provides a kind of aluminium paint based on above-mentioned water-borne acrylic resin.The good stability of this coating, aluminum
Fen-ting tropism is good.
The above-mentioned aluminium paint based on water-borne acrylic resin of the present invention, including the aqueous acrylamide of the present invention of 20～80wt%
Acid resin, more preferably includes the water-borne acrylic resin of the present invention of 30～70wt%.
Described aluminium paint also comprises following components：Water cross-linking agent, aqueous promoter, catalyst, water aluminum-silver slurry, aqueouss
Wax liquor, water.
Described water cross-linking agent can be amino resins, water-based isocyanate.
Described cosolvent can be butyl glycol ether, ethylene glycol monomethyl ether, propylene glycol monomethyl ether, propandiol butyl ether, dipropylene glycol
At least one in butyl ether, n-butyl alcohol, isopropanol and butyl, preferably isopropanol.
Described catalyst can for DBSA, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid, to toluene sulphur
Acid, slaine carboxylic acid or phosphate etc..
Described water aluminum-silver slurry can be silicon dioxide coating type water aluminum-silver slurry and organophosphorus ester Passivation Treatment type water
Property aluminum paste；
Described silicon dioxide coating type water aluminum-silver slurry can for the Hydrolan 2197 of German Eckart GmbH ＆ Co. KG,
Hydrolan2192, Hydrolan801, Aquamet CP-BG/6900, the Aquamet CP-BG/ of German Schlenk company
8500/50、Aquamet CP-BG/3400；
Described organophosphorus ester Passivation Treatment type water aluminum-silver slurry can be the HYDROXAL W/WH of German Eckart GmbH ＆ Co. KG
2156th, HYDROXAL W/WH 8154, the Aquamet NPW/6900 of German Schlenk company, Aquamet NPW/3400,
Aquamet WPO/2600.
Described aqueouss wax liquor can be AQUATIX 8421, the AQUACER 526 of BYK company, the AQ- of Supreme Being Si Balong
600 and AQ-800.
Additionally, described aluminium paint can also add aqueous promoter, such as defoamer, levelling agent, wetting dispersing agent etc.；These
There is between aqueous promoter and between aqueous promoter and other components the good compatibility.
The water-borne acrylic resin modest viscosity of the present invention, has excellent adhesive force to aluminium section bar, and aluminium powder directionality
Good, can be applicable in aluminium section bar water paint.
The present invention, with respect to prior art, has such advantages as and beneficial effect：
(1) excellent attachment is had based on the aluminium paint that water-borne acrylic resin of the present invention prepares to aluminium section bar
Power, and aluminium powder directionality are good, paint film metal sense is strong, and the glossiness having had.
(2) water-borne acrylic resin modest viscosity of the present invention, the aluminium paint system viscosity being obtained based on it is moderate, therefore
Coating system has good spraying application.
(3) because, in this aluminium paint system, hydrophilic group content is low, contain substantial amounts of hydroxyl activity crosslinking points simultaneously,
After therefore solidifying with amino curing agent, the crosslink density of paint film is very big, and paint film has good corrosion resistance.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Used in the following example, reagent all can obtain from commercial channel.
Embodiment 1
It is previously charged into butyl glycol ether 154g in the reaction vessel equipped with stirring, condensation and heater, and should
Material is heated to 105 DEG C, adds 363.8g methyl methacrylate, 51.8g styrene, 259g at such a temperature in 5 hours
Hydroxyethyl methylacrylate, 264.3g butyl acrylate, 36g butyl methacrylate, 25g acrylic acid mixture, parallel with this,
Mixture after adding 60.5g benzoyl peroxide and 80g butyl glycol ether to be uniformly dissolved in 5.5 hours, subsequently by mixture
Continue stirring 2 hours at 105 DEG C, be subsequently cooled to 80 DEG C, add 30.9g N, N- dimethylethanolamine, stir 30 minutes
Afterwards, it is cooled to 60 DEG C, add 1200g deionized water in 1 hour, obtain the water-borne acrylic resin with data below：Acid
Value 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscosity 2100mPa s；PH value 7.5；Mean diameter 160nm；Solid content 40%.
Embodiment 2
It is previously charged into 77g butyl glycol ether and 77g in the reaction vessel equipped with stirring, condensation and heater
Solvesso 100, and this material is heated to 105 DEG C, add 363.8g methacrylic acid at such a temperature in 5 hours
Methyl ester, 51.8g styrene, 259g hydroxyethyl methylacrylate, 264.3g butyl acrylate, 36g butyl methacrylate, 25g
Acrylic acid mixture, parallel with this, added 60.5g benzoyl peroxide and 80g butyl glycol ether to be uniformly dissolved in 5.5 hours
Mixture is subsequently continued stirring 2 hours at 105 DEG C, is subsequently cooled to 80 DEG C by mixture afterwards, adds 30.9g N, N- diformazan
Ethylethanolamine, after stirring 30 minutes, is cooled to 60 DEG C, adds 1200g deionized water, obtain with data below in 1 hour
Water-borne acrylic resin：Acid number 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscosity 2700mPa s；PH value 7.5；Mean diameter
210nm；Solid content 40%.
Embodiment 3
It is previously charged into 77g butyl glycol ether in the reaction vessel equipped with stirring, condensation and heater, and by this thing
Material is heated to 105 DEG C, adds 363.8g methyl methacrylate, 51.8g styrene, 259g first at such a temperature in 5 hours
Base 2-(Acryloyloxy)ethanol, 264.3g butyl acrylate, 36g butyl methacrylate, 25g acrylic acid mixture, parallel with this,
Add 60.5g benzoyl peroxide and 80g butyl glycol ether to be uniformly dissolved rear mixture in 5.5 hours, subsequently mixture exists
Continue stirring 2 hours at 105 DEG C, be subsequently cooled to 80 DEG C, add 77g isopropanol, stir 10 minutes, be subsequently adding 30.9g N,
N- dimethylethanolamine, after stirring 30 minutes, is cooled to 60 DEG C, added 1200g deionized water in 1 hour, obtain having with
The water-borne acrylic resin of lower data：Acid number 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscosity 3000mPa s；PH value 7.5；Flat
All particle diameter 180nm；Solid content 40%.
Embodiment 4
It is previously charged into 77g butyl glycol ether in the reaction vessel equipped with stirring, condensation and heater, and by this thing
Material is heated to 105 DEG C, adds 363.8g methyl methacrylate, 51.8g styrene, 259g first at such a temperature in 5 hours
Base 2-(Acryloyloxy)ethanol, 264.3g butyl acrylate, 36g butyl methacrylate, 25g acrylic acid mixture, parallel with this,
Add 60.5g bis- tertiary amyl peroxide and 80g butyl glycol ether to be uniformly dissolved rear mixture in 5.5 hours, subsequently will mix
Thing continues stirring 2 hours at 105 DEG C, is subsequently cooled to 80 DEG C, adds 77g isopropanol, stirs 10 minutes, is subsequently adding
30.9g N, N- dimethylethanolamine, after stirring 30 minutes, is cooled to 60 DEG C, adds 1200g deionized water, obtain in 1 hour
To the water-borne acrylic resin with data below：Acid number 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscosity 3600mPa s；pH
Value 7.5；Mean diameter 190nm；Solid content 40%.
Embodiment 5
It is previously charged into 77g butyl glycol ether in the reaction vessel equipped with stirring, condensation and heater, and by this thing
Material is heated to 105 DEG C, adds 363.8g methyl methacrylate, 51.8g styrene, 259g first at such a temperature in 5 hours
Base 2-(Acryloyloxy)ethanol, 264.3g butyl acrylate, 36g butyl methacrylate, 25g acrylic acid mixture, parallel with this,
Add 60.5g di-tert-butyl peroxide and 80g butyl glycol ether to be uniformly dissolved rear mixture in 5.5 hours, subsequently will mix
Thing continues stirring 2 hours at 105 DEG C, is subsequently cooled to 80 DEG C, adds 77g isopropanol, stirs 10 minutes, is subsequently adding
30.9g N, N- dimethylethanolamine, after stirring 30 minutes, is cooled to 60 DEG C, adds 1200g deionized water, obtain in 1 hour
To the water-borne acrylic resin with data below：Acid number 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscosity 3200mPa s；pH
Value 7.5；Mean diameter 180nm；Solid content 40%.
Embodiment 6
It is previously charged into 77g butyl glycol ether in the reaction vessel equipped with stirring, condensation and heater, and by this thing
Material is heated to 105 DEG C, adds 301.4g methyl methacrylate, 51.8g styrene, 62.4g first at such a temperature in 5 hours
Base isobornyl acrylate, 259g hydroxyethyl methylacrylate, 264.3g butyl acrylate, 36g butyl methacrylate, 25g
Acrylic acid mixture, parallel with this, added 60.5g benzoyl peroxide and 80g butyl glycol ether to be uniformly dissolved in 5.5 hours
Mixture is subsequently continued stirring 2 hours at 105 DEG C, is subsequently cooled to 80 DEG C by mixture afterwards, adds 77g isopropanol, stirring
10 minutes, it is subsequently adding 30.9g N, N- dimethylethanolamine, after stirring 30 minutes, is cooled to 60 DEG C, added in 1 hour
1200g deionized water, obtains the water-borne acrylic resin with data below：Acid number 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscous
Degree 2500mPa s；PH value 7.5；Mean diameter 180nm；Solid content 40%.
Embodiment 7
It is previously charged into 77g butyl glycol ether in the reaction vessel equipped with stirring, condensation and heater, and by this thing
Material is heated to 105 DEG C, adds 276.4g methyl methacrylate, 51.8g styrene, 62.4g first at such a temperature in 5 hours
Base isobornyl acrylate, 259g hydroxyethyl methylacrylate, 264.3g butyl acrylate, 36g butyl methacrylate, 50g
Acrylic acid mixture, parallel with this, added 60.5g benzoyl peroxide and 80g butyl glycol ether to be uniformly dissolved in 5.5 hours
Mixture is subsequently continued stirring 2 hours at 105 DEG C, is subsequently cooled to 80 DEG C by mixture afterwards, adds 77g isopropanol, stirring
10 minutes, it is subsequently adding 30.9g N, N- dimethylethanolamine, after stirring 30 minutes, is cooled to 60 DEG C, added in 1 hour
1200g deionized water, obtains the water-borne acrylic resin with data below：Acid number 23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscous
Degree 5400mPa s；PH value 7.5；Mean diameter 120nm；Solid content 40%.
Embodiment 8
It is previously charged into 77g butyl glycol ether in the reaction vessel equipped with stirring, condensation and heater, and by this thing
Material is heated to 105 DEG C, adds 301.4g methyl methacrylate, 39.8g styrene, 62.4g first at such a temperature in 5 hours
Base isobornyl acrylate, 259g hydroxyethyl methylacrylate, 221.2g butyl acrylate, 43.1g tertiary carbonic acid glycidyl ester,
36g butyl methacrylate, 37g acrylic acid mixture, parallel with this, in 5.5 hours add 60.5g benzoyl peroxide and
80g butyl glycol ether is uniformly dissolved rear mixture, mixture subsequently continues at 105 DEG C stirring 2 hours, is subsequently cooled to 80
DEG C, add 77g isopropanol, stir 10 minutes, be subsequently adding 30.9g N, N- dimethylethanolamine, after stirring 30 minutes, lower the temperature
To 60 DEG C, add 1200g deionized water in 1 hour, obtain the water-borne acrylic resin with data below：Acid number
23mgKOH/g；Hydroxyl value 65mgKOH/g；Viscosity 1700mPa s；PH value 7.5；Mean diameter 180nm；Solid content 40%.
Application Example：A-H
Aluminum paint, aqueous for aluminium shape surface decoration, by the water-borne acrylic resin including prepared by embodiment 1～8
Deng composition, concrete component and content are shown in Table 1.
Table 1 aqueous aluminum powder paint formula and performance indications
In table 1, the standards of grading of argentum powder arrangement effect are：
5 points：Argentum powder arranged regular in paint film, there is flicker and metal sense, argentum powder assume silvery white and do not black；
1 point：In paint film, argentum powder arranges mixed and disorderly, flicker free and metal sense, argentum powder black.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment
Limit, other any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify,
All should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (10)
1. one kind has excellent aluminium powder directionality water-borne acrylic resin it is characterised in that being prepared by including following components：
(1) acrylic monomer, consumption is the 60～99% of all total monomer weights；Described acrylic monomer includes carboxyl third
Alkene acrylic monomer and hydroxy acids monomer and other acrylic monomers, wherein carboxy acrylic class monomer accounts for all lists
The 5～10% of body gross weight, hydroxy acids monomer accounts for the 15～25% of all total monomer weights；
(2) vinyl aromatic monomer, consumption is the 0～25% of all total monomer weights；
(3) initiator, consumption is the 0.5～3% of all total monomer weights；
(4) cosolvent, consumption is the 5～40% of all total monomer weights；
(5) nertralizer, consumption is the 0.5～2% of all total monomer weights；
(6) water；
Group listed by described (1)～(3) for the described all monomers is grouped into.
2. according to claim 1 there is excellent aluminium powder directionality water-borne acrylic resin it is characterised in that：Described carboxylic
Base acrylic monomer includes at least one in acrylic acid, methacrylic acid and itaconic acid；
Described hydroxy acids monomer includes (methyl) 2-(Acryloyloxy)ethanol, (methyl) Hydroxypropyl acrylate and acrylic acid hydroxyl
At least one in butyl ester；
Other described acrylic monomers include acrylic compounds soft or hard monomer and acrylic compounds function monomer；
Described acrylic compounds soft or hard monomer is (methyl) alkyl acrylate；
Described acrylic compounds function monomer include amide groups acrylic monomer, epoxy radicals acrylic monomerss, phosphate-based third
Alkene acrylic monomer, aminoacrylic acid class monomer.
3. according to claim 2 there is excellent aluminium powder directionality water-borne acrylic resin it is characterised in that：Described third
Olefin(e) acid class soft or hard monomer is (methyl) acrylic acid methyl ester., (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) propylene
At least one in the different monooctyl ester of acid, (methyl) lauryl acrylate and (methyl) isobornyl acrylate；
Described amide groups acrylic monomer is (methyl) acrylamide, N-[2-(2-methyl-4-oxopentyl), N hydroxymethyl acrylamide
And N, at least one in N- DMAA；
Described epoxy radicals acrylic monomer be in glycidyl methacrylate and tertiary carbonic acid glycidyl ester at least
A kind of；
Described phosphate-based acrylic monomer is (methyl) acrylic acid (alkoxyl) phosphate ester and 2- ethoxy (methyl) third
At least one in olefin(e) acid ester phosphate ester；
Described aminoacrylic acid class monomer is dimethylaminoethyl methacrylate.
4. according to claim 1 there is excellent aluminium powder directionality water-borne acrylic resin it is characterised in that：Described second
Alkenes aromatic monomer includes at least one in styrene, α-methyl styrene and 3- t-butyl styrene；
Described initiator is azo compound or organic peroxide；
Described cosolvent is ethylene glycol monobutyl ether, glycol monoethyl ether, propylene glycol monomethyl ether or diethylene glycol dimethyl ether, propylene glycol
At least one in butyl ether, dipropylene, isopropanol.
5. the preparation method with excellent aluminium powder directionality water-borne acrylic resin described in a kind of any one of Claims 1 to 4,
It is characterized in that comprising the following steps：
(1) acrylic monomer is uniformly mixed, obtains mixture A；
(2) by the cosolvent of 15～50wt% and initiator mix homogeneously, obtain mixture B；
(3) mixture A and mixture B is added drop-wise in the remaining cosolvent being preheated to 80～140 DEG C, obtains polymer C, insulation
1～5 hour；
(4) polymer C is cooled to 50～100 DEG C, adds nertralizer, stir；
(5) it is cooled to 40～80 DEG C, add water, obtain water-borne acrylic resin.
6. the aluminium powder with excellent aluminium powder directionality water-borne acrylic resin described in a kind of any one based on Claims 1 to 4
Coating it is characterised in that：Including the water-borne acrylic resin described in 20～80wt% any one of Claims 1 to 4.
7. aluminium paint according to claim 6 is it is characterised in that also comprise following components：Water cross-linking agent, aqueouss help
Agent, catalyst, water aluminum-silver slurry, aqueouss wax liquor, water.
8. aluminium paint according to claim 7 it is characterised in that：Described water cross-linking agent is amino resins and aqueouss
At least one in isocyanates；
Described cosolvent is butyl glycol ether, ethylene glycol monomethyl ether, propylene glycol monomethyl ether, propandiol butyl ether, dipropylene, just
At least one in butanol, isopropanol and butyl；
Described catalyst is DBSA, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid, p-methyl benzenesulfonic acid, metal
Salt carboxylic acid or phosphate；
Described water aluminum-silver slurry is silicon dioxide coating type water aluminum-silver slurry and organophosphorus ester Passivation Treatment type aqueouss aluminum silver
Slurry；
Described aqueouss wax liquor is AQUATIX 8421, the AQUACER 526 of BYK company, AQ-600 and AQ- of Supreme Being Si Balong
800.
9. aluminium paint according to claim 6 is it is characterised in that also comprise following components：Defoamer, levelling agent or profit
Hygroscopic water powder.
10. the excellent aluminium powder directionality water-borne acrylic resin that has described in any one of Claims 1 to 4 applies in aluminium section bar aqueouss
Application in material.
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| CN108047848A (en) * | 2017-12-30 | 2018-05-18 | 西安经建油漆股份有限公司 | A kind of environment-friendly type aqueous one-component aluminium color coating and preparation method thereof |
| CN108912879A (en) * | 2017-04-26 | 2018-11-30 | 句容大为网络科技有限公司 | A kind of aqueous metallic finishe and preparation method thereof suitable for common aluminium powder |
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