CN106916493A - A kind of nano-TiO2/ Nano-meter SiO_22Compound modified acrylic water paint and preparation method thereof - Google Patents
A kind of nano-TiO2/ Nano-meter SiO_22Compound modified acrylic water paint and preparation method thereof Download PDFInfo
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- 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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—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 an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
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- 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
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- 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
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- 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
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- 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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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Abstract
The invention discloses a kind of modified acroleic acid water-based paint compositions and preparation method thereof, the coating composition includes modified acrylic acid emulsion component and mill base component, wherein, the modified acrylic acid emulsion component includes the following component counted by weight：It is acrylic resin modified：34~40 parts；Enclosed type aliphatic isocyanates curing agent：15~17 parts；Deionized water：44~52.2 parts.Coating of the invention is aqueous double-component coating, and application is convenient, uses environmental protection, safety；Plate face smooth, decorative effect are good, and coating has excellent mechanical performance and acidproof, alkali resistance, and coating also has very excellent weather resistance, through 1500 hours QUV degradations, gloss loss≤10%, Δ E≤1.3, and preferably corrosion resistance and low-surface-energy；The preparation manipulation technique of the coating is easy, and the coating each component of preparation is uniformly dispersed, good stability.
Description
Technical field
The invention belongs to acrylic acid aqueous paint field, it is related to one kind nano-TiO2/ Nano-meter SiO_22Compound modified acrylic
Water paint and preparation method thereof.
Background technology
Low-carbon environment-friendly be now society all pursuing trend, water paint and products thereof meet the requirement of low-carbon environment-friendly so
Development potentiality is huge.Compared with traditional solvent-borne coating, water paint has environmental protection and the features such as excellent performance, as coating work
The Developing mainstream of industry.Epoxy resin water paint has excellent adhesive force and Corrosion Protection, but because epoxy resin is resistance to
Time property is poor, it is impossible to used as finish paint, and acrylate class water paint has good guarantor's color, a gloss retention, good weatherability with
And plentiful coating film gloss, can adapt to individual layer application, reduce the requirement of construction cost.But present weather resistant disclosed on the market
Water paint performance compared with traditional solvent-borne coating is relatively poor, and lacking a kind of high durable, salt fog resistance and surface can be relatively low
Suitable different colours system water paint.In recent years, nano combined low-surface-energy material is widely paid close attention to, by nanometer
Material is added in polymer, and its surface energy is reduced using the surface topography of the characteristic changing polymer of nano material, lifts it
Weatherability and salt fog resistance.
The content of the invention
The present invention is for market to water paint high performance demands, there is provided a kind of nano TiO 2 nanosized SiO_2 composite modified third
Olefin(e) acid water paint and preparation method thereof, product of the present invention is double-component system, is adapted to colored, white, gray systems, is had
Easy construction, after an application, appearance of coat smooth, with good decorative effect, yellowing resistance, excellent machinery
Performance and acidproof, alkali resistance, coating also have very excellent weather resistance and salt fog resistance and low-surface-energy, small through 1500
When the QUV degradations and NSS salt spray tests of 800 hours, gloss loss≤10%, Δ E≤1.3, salt fog draws and unidirectionally corrode at fork
Width≤1.5, draw at fork and edge are without foaming phenomena.
To achieve these goals, technical scheme is as follows：
A kind of nano-TiO2/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, including modified acrylic acid emulsion component
With mill base component, wherein, the modified acrylic acid emulsion component includes the following component counted by weight：
It is acrylic resin modified：34~40 parts；
Enclosed type aliphatic isocyanates curing agent：15~17 parts；
Deionized water：44~52.2 parts.
Selection enclosed type aliphatic isocyanates curing agent, can improve the color inhibition and weatherability of coating, while reaching
Suitable baking temperature unlocks the reactive with active hydrogen crosslinking curing in isocyanates and resin.
Preferably, the mill base component includes the following component counted by weight：
Preferably, the acrylic resin modified following component including counting by weight：
Using nano-TiO2Nano-meter SiO_22There is the hydrogen bond of a large amount of unsaturation residual bonds and different conditions in molecular structure, while also having
There is excellent uv absorption capacity, so as to improve the workability and spreading property of coating, such as hardness, wearability, ageing-resistant
Property and low-surface-energy etc., with stronger anti-uv-ray, assign coating very excellent weather resistance；While nanometer
TiO2Nano-meter SiO_22In coating surface, assign coating compared with low-surface-energy, with stronger hydrophobic effect, hinder etchant solution to
Coat inside diffusion is greatly improved to Corrosion Protection.
Preferably, the preparation method of the modified acrylic acid emulsion is：
Under conditions of no more than 45 DEG C, after acrylic resin modified and enclosed type aliphatic isocyanates curing agent is mixed,
(by organic acid and causing that the amido in acrylic resin chain becomes ammonium salt, assign resin enough hydrophilic by organic acid
Property.) regulation pH value be 5.6~6.2, add deionized water, stir and obtain final product.
Preferably, the acrylic resin modified preparation method is：
By GMA, hydroxy propyl methacrylate, methyl methacrylate, n-butyl acrylate, benzene second
Alkene, benzoyl peroxide are well mixed stand-by, are designated as mixed liquor A, while by the benzoyl peroxide and butyl acetate of formula ratio
It is well mixed stand-by, it is designated as mixed liquid B；
After methyl iso-butyl ketone (MIBK), butyl glycol ether are mixed, after mixed liquor A is added dropwise at 115 DEG C, mixed liquid B is added dropwise, after reaction
105 DEG C are cooled to, diethanol amine is added dropwise, 120 DEG C are warming up to after reaction carries out amination, obtains acrylic resin modified.
Preferably, the preparation method of the mill base component is：
After acrylic grinding resin, surfactant and deionized water are mixed, color stuffing is added, be ground to fineness no more than 15
After μm, obtain final product.
Preferably, the enclosed type aliphatic isocyanates curing agent including counting such as the following group by weight
Point：
Methyl iso-butyl ketone (MIBK)：20~30 parts；
Hexamethylene diisocyanate：38~42 parts；
N-butanol：32~38 parts.
Preferably, the preparation method of the enclosed type aliphatic isocyanates curing agent is：
Methyl iso-butyl ketone (MIBK) and hexamethylene diisocyanate are mixed, in blanket of nitrogen, n-butanol is added dropwise in 75 DEG C, carried out anti-
Should after obtain final product.
Preferably, the acrylic grinding resin is the resin containing anchoring group with comb-type structure, institute
Surfactant is stated for non-induced by alkyl hydroxybenzene surfactant.Using the acrylic grinding resin of comb-type structure, by containing ammonium salt
Tightly adsorbed in surface of pigments Deng anchoring group, there is excellently wetting and dispersing effect to color stuffing, prevent color stuffing from reuniting,
Improve the stability of mill base.Pigment is soaked by surfactant, pigment agglomerates are reduced.
Preferably, the mass ratio of the modified acrylic acid emulsion component and mill base component is 8:1.
The beneficial effects are mainly as follows：
1st, the coating is aqueous double-component coating, and application is convenient, uses environmental protection, safety；Plate face smooth, decorative effect are good,
Coating has excellent mechanical performance and acidproof, alkali resistance, and coating also had very excellent weather resistance, through 1500 hours
QUV degradations, gloss loss≤10%, Δ E≤1.3, and preferably corrosion resistance and low-surface-energy；
2nd, the preparation manipulation technique of the coating is easy, and the coating each component of preparation is uniformly dispersed, good stability.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to those skilled in the art
The present invention is further understood, but the invention is not limited in any way.It should be pointed out that to one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to guarantor of the invention
Shield scope.
Embodiment 1
1) TiO2Nano-meter SiO_22Compound modified acrylic resin is formulated：
A：
B:
A:By formula ratio by GMA, hydroxy propyl methacrylate, methyl methacrylate, acrylic acid just
Butyl ester, styrene, even benzoyl peroxide be well mixed stand-by, referred to as mixed liquor 1；By the even benzoyl peroxide of formula ratio
Stand-by, referred to as mixed liquor 2 is well mixed with butyl acetate.Methyl iso-butyl ketone (MIBK), butyl glycol ether are added and carried by formula ratio
In the reaction vessel of agitator and condenser pipe, logical nitrogen, be warmed up to 115 DEG C after, start to be added dropwise mixed liquor Isosorbide-5-Nitrae hour drip off after protect
Warm half an hour, mixed liquor 2 is then added dropwise, half an hour drips off, is then incubated 1 hour, be cooled to 105 DEG C, then dripped by formula ratio
Plus diethanol amine, half an hour drips off, and is then warmed up to 120 DEG C, and then amination 4 hours cools to 45 DEG C with bottom discharge, obtains third
Olefin(e) acid modified resin.
B:The methyl iso-butyl ketone (MIBK) and silane of formula ratio are sequentially added in the reaction vessel with agitator and condenser pipe
Coupling agent KH-560 and then stirring are subsequently adding the nano TiO 2 and nanosized SiO_2 of formula ratio, by ultrasound up to well mixed
Dispersion 0.5 hour, heating stirring is reacted 12 hours to flowing back, and after reaction terminates, powder is done in centrifugation, washing in 60 DEG C of baking ovens
It is dry, that is, obtain modified composite Nano TiO2 and nanosized SiO_2.
C:The acrylic resin (A) of appropriate synthesis is taken, adds a certain amount of methyl iso-butyl ketone (MIBK) to make third by heating stirring
Olefin(e) acid resin is completely dissolved, then will be added to acrylic acid tree with KH-560 modified composite Nano TiO2 and nanosized SiO_2 (B)
High speed dispersion is carried out by multifunctional mixer in the solution of fat, composite Nano TiO2 and nanosized SiO_2 is uniformly dispersed in third
In the solution of olefin(e) acid resin, described nano TiO 2 nanosized SiO_2 compound modified acrylic resin is obtained
2) the enclosed type aliphatic isocyanates hardener formula：
20 parts of methyl iso-butyl ketone (MIBK)
42 parts of hexamethylene diisocyanate
38 parts of n-butanol
The reaction with agitator and condenser pipe is added to hold methyl iso-butyl ketone (MIBK) and hexamethylene diisocyanate by formula ratio
In device, lead to nitrogen, be warmed up to 75 DEG C, n-butanol is added dropwise, drip off within 1 hour, after being incubated 2 hours, cool to 45 DEG C with bottom discharge, obtain
Obtain described enclosed type aliphatic isocyanates curing agent.
3) the high weather resistant acrylic acid modified emulsion formula
By formula ratio by TiO2Nano-meter SiO_22Compound modified acrylic resin and enclosed type aliphatic isocyanates curing agent are added
Stirred in reaction vessel 1 hour and be well mixed, be subsequently adding nertralizer acetic acid and stir 1 hour, then deionized water disposably adds
Enter reaction vessel high speed stir 2 hours, whole preparation process reaction vessel temperature control less than 45 DEG C, obtain described in
TiO2 nanosized SiO_2 compound modified acrylic emulsions.
4) paste formula
Stirred during acrylic grinding resin, surfactant and deionized water are added into grinding pot by formula ratio, in grinding
Titanium dioxide is slowly added in the case of having zirconium pearl, logical condensed water in tank, is sanded 2 hours at a high speed, to fineness≤15 μm, obtain described
Weatherability white mill base.
Embodiment 2
1) TiO2Nano-meter SiO_22Compound modified acrylic resin is formulated：
A：
B:
A:By formula ratio by GMA, hydroxy propyl methacrylate, methyl methacrylate, acrylic acid just
Butyl ester, styrene, even benzoyl peroxide be well mixed stand-by, referred to as mixed liquor 1；By the even benzoyl peroxide of formula ratio
Stand-by, referred to as mixed liquor 2 is well mixed with butyl acetate.Methyl iso-butyl ketone (MIBK), butyl glycol ether are added and carried by formula ratio
In the reaction vessel of agitator and condenser pipe, logical nitrogen, be warmed up to 115 DEG C after, start to be added dropwise mixed liquor Isosorbide-5-Nitrae hour drip off after protect
Warm half an hour, mixed liquor 2 is then added dropwise, half an hour drips off, is then incubated 1 hour, be cooled to 105 DEG C, then dripped by formula ratio
Plus diethanol amine, half an hour drips off, and is then warmed up to 120 DEG C, and then amination 4 hours cools to 45 DEG C with bottom discharge, obtains third
Olefin(e) acid modified resin.
B:The methyl iso-butyl ketone (MIBK) and silane of formula ratio are sequentially added in the reaction vessel with agitator and condenser pipe
Coupling agent KH-560 and then stirring are subsequently adding the nano-TiO of formula ratio up to well mixed2And Nano-meter SiO_22, by ultrasound point
Dissipate 0.5 hour, heating stirring is reacted 12 hours to flowing back, after reaction terminates, powder is done in centrifugation, washing in 60 DEG C of baking ovens
It is dry, that is, obtain modified composite Nano TiO2And Nano-meter SiO_22。
C:The acrylic resin (A) of appropriate synthesis is taken, adds a certain amount of methyl iso-butyl ketone (MIBK) to make third by heating stirring
Olefin(e) acid resin is completely dissolved, then by with KH-560 modified composite Nano TiO2And Nano-meter SiO_22(B) it is added to acrylic resin
Solution in high speed dispersion is carried out by multifunctional mixer, make composite Nano TiO2And Nano-meter SiO_22It is uniformly dispersed in propylene
In the solution of acid resin, described nano-TiO is obtained2Nano-meter SiO_22Compound modified acrylic resin.
2) the enclosed type aliphatic isocyanates hardener formula：
30 parts of methyl iso-butyl ketone (MIBK)
38 parts of hexamethylene diisocyanate
32 parts of n-butanol
The reaction with agitator and condenser pipe is added to hold methyl iso-butyl ketone (MIBK) and hexamethylene diisocyanate by formula ratio
In device, lead to nitrogen, be warmed up to 75 DEG C, n-butanol is added dropwise, drip off within 1 hour, after being incubated 2 hours, cool to 45 DEG C with bottom discharge, obtain
Obtain described enclosed type aliphatic isocyanates curing agent.
3) the high weather resistant acrylic acid modified emulsion formula
By formula ratio by nano-TiO2Nano-meter SiO_22Compound modified acrylic resin and enclosed type aliphatic isocyanates curing agent
Stirring is well mixed for 1 hour in adding reaction vessel, and next step adds nertralizer lactic acid to stir 1 hour, then by deionized water
Disposable to add reaction vessel high speed to stir 2 hours, whole preparation process reaction vessel temperature control is obtained below 45 DEG C
Described nano-TiO2Nano-meter SiO_22Compound modified acrylic emulsion.
4) the weather-proof paste formula
Stirred during acrylic grinding resin, surfactant and deionized water are added into grinding pot by formula ratio, in grinding
Color pigment iron oxide red PR-101, phthalocyanine blue PB-15 and pigment are slowly added in the case of having zirconium pearl, logical condensed water in tank
Huang, is sanded 2 hours at a high speed, to fineness≤15 μm, obtains described weather resisting colorful mill base.
Embodiment 3
1) TiO2Nano-meter SiO_22Compound modified acrylic resin is formulated：
A：
B:
A:By formula ratio by GMA, hydroxy propyl methacrylate, methyl methacrylate, acrylic acid just
Butyl ester, styrene, even benzoyl peroxide be well mixed stand-by, referred to as mixed liquor 1；By the even benzoyl peroxide of formula ratio
Stand-by, referred to as mixed liquor 2 is well mixed with butyl acetate.Methyl iso-butyl ketone (MIBK), butyl glycol ether are added and carried by formula ratio
In the reaction vessel of agitator and condenser pipe, logical nitrogen, be warmed up to 115 DEG C after, start to be added dropwise mixed liquor Isosorbide-5-Nitrae hour drip off after protect
Warm half an hour, mixed liquor 2 is then added dropwise, half an hour drips off, is then incubated 1 hour, be cooled to 105 DEG C, then dripped by formula ratio
Plus diethanol amine, half an hour drips off, and is then warmed up to 120 DEG C, and then amination 4 hours cools to 45 DEG C with bottom discharge, obtains third
Olefin(e) acid modified resin.
B:The methyl iso-butyl ketone (MIBK) and silane of formula ratio are sequentially added in the reaction vessel with agitator and condenser pipe
Coupling agent KH-560 and then stirring are subsequently adding the nano-TiO of formula ratio up to well mixed2And Nano-meter SiO_22, by ultrasound point
Dissipate 0.5 hour, heating stirring is reacted 12 hours to flowing back, after reaction terminates, powder is done in centrifugation, washing in 60 DEG C of baking ovens
It is dry, that is, obtain modified composite Nano TiO2And Nano-meter SiO_22。
C:The acrylic resin (A) of appropriate synthesis is taken, adds a certain amount of methyl iso-butyl ketone (MIBK) to make third by heating stirring
Olefin(e) acid resin is completely dissolved, then by with KH-560 modified composite Nano TiO2And Nano-meter SiO_22(B) it is added to acrylic resin
Solution in high speed dispersion is carried out by multifunctional mixer, make composite Nano TiO2And Nano-meter SiO_22It is uniformly dispersed in propylene
In the solution of acid resin, described nano-TiO is obtained2Nano-meter SiO_22Compound modified acrylic resin.
2) the enclosed type aliphatic isocyanates hardener formula：
25 parts of methyl iso-butyl ketone (MIBK)
40 parts of hexamethylene diisocyanate
35 parts of n-butanol
The reaction with agitator and condenser pipe is added to hold methyl iso-butyl ketone (MIBK) and hexamethylene diisocyanate by formula ratio
In device, lead to nitrogen, be warmed up to 75 DEG C, n-butanol is added dropwise, drip off within 1 hour, after being incubated 2 hours, cool to 45 DEG C with bottom discharge, obtain
Obtain described enclosed type aliphatic isocyanates curing agent.
3) the high weather resistant acrylic acid modified emulsion formula
By formula ratio by nano-TiO2Nano-meter SiO_22Compound modified acrylic resin and enclosed type aliphatic isocyanates curing agent
Stirring is well mixed for 1 hour in adding reaction vessel, and next step adds nertralizer lactic acid to stir 1 hour, then by deionized water
Disposable to add reaction vessel high speed to stir 2 hours, whole preparation process reaction vessel temperature control is obtained below 45 DEG C
Described nano-TiO2Nano-meter SiO_22Compound modified acrylic emulsion.
4) the weather-proof paste formula
Stirred during acrylic grinding resin, surfactant and deionized water are added into grinding pot by formula ratio, in grinding
Carbon black, kaolin and titanium dioxide are slowly added in the case of having zirconium pearl, logical condensed water in tank, are sanded 2 hours at a high speed, to fineness≤
15 μm, obtain described weather-proof grey mill base.
By the electrophoretic coating of Multipurpose high weather resistant obtained in above-described embodiment 1-3, the electrophoresis tank that solid part is for 12% is made into
Liquid, cures 24h in electrophoresis tank, and in electrophoretic voltage 150V, 30 DEG C of tank liquor temperature, electrophoresis time is to prepare sample under conditions of 30s
Plate, solidification temperature is 180 DEG C/20min.
A kind of nano-TiO obtained in embodiment 1-32Nano-meter SiO_22Compound modified acrylic water paint prepares the master of model
Want technical indicator as shown in the table：
Thus a kind of obtained nano-TiO of the present invention2Nano-meter SiO_22Compound modified acrylic water paint is adapted to colored, white
Color, gray systems, with appearance of coat smooth, with good decorative effect, yellowing resistance, excellent mechanical performance and
Acidproof, alkali resistance, coating also has the advantages that very excellent weather resistance, corrosion resistance and low-surface-energy.
In sum, only presently preferred embodiments of the present invention, not for limiting the scope of present invention implementation, it is all according to
Impartial change carried out by shape, construction, feature and spirit and modification described in scope of the invention as claimed, all should be included in this
In the right of invention.
Claims (10)
1. a kind of nano-TiO2/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, including modified acrylic acid emulsion component
With mill base component, it is characterised in that the modified acrylic acid emulsion component includes the following component counted by weight：
It is acrylic resin modified：34~40 parts；
Enclosed type aliphatic isocyanates curing agent：15~17 parts；
Deionized water：44~52.2 parts.
2. nano-TiO as claimed in claim 12/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the mill base component includes the following component counted by weight：
3. nano-TiO as claimed in claim 1 or 22/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature
It is, the acrylic resin modified following component including counting by weight：
4. nano-TiO as claimed in claim 12/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the preparation method of the modified acrylic acid emulsion is：
Under conditions of no more than 45 DEG C, after acrylic resin modified and enclosed type aliphatic isocyanates curing agent is mixed,
Regulation pH value is 5.6~6.2, adds deionized water, stirs and obtains final product.
5. nano-TiO as claimed in claim 32/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the acrylic resin modified preparation method is：
By GMA, hydroxy propyl methacrylate, methyl methacrylate, n-butyl acrylate, benzene second
Alkene, benzoyl peroxide are well mixed stand-by, are designated as mixed liquor A, while by the benzoyl peroxide and butyl acetate of formula ratio
It is well mixed stand-by, it is designated as mixed liquid B；
After methyl iso-butyl ketone (MIBK), butyl glycol ether are mixed, after mixed liquor A is added dropwise at 115 DEG C, mixed liquid B is added dropwise, after reaction
105 DEG C are cooled to, diethanol amine is added dropwise, 120 DEG C are warming up to after reaction carries out amination, obtains acrylic resin modified.
6. nano-TiO as claimed in claim 1 or 22/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature
It is that the preparation method of the mill base component is：
After acrylic grinding resin, surfactant and deionized water are mixed, color stuffing is added, be ground to fineness no more than 15
After μm, obtain final product.
7. nano-TiO as claimed in claim 12/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the enclosed type aliphatic isocyanates curing agent includes the following component counted by weight：
Methyl iso-butyl ketone (MIBK)：20~30 parts；
Hexamethylene diisocyanate：38~42 parts；
N-butanol：32~38 parts.
8. nano-TiO as claimed in claim 72/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the preparation method of the enclosed type aliphatic isocyanates curing agent is：
Methyl iso-butyl ketone (MIBK) and hexamethylene diisocyanate are mixed, in blanket of nitrogen, n-butanol is added dropwise in 75 DEG C, carried out anti-
Should after obtain final product.
9. nano-TiO as claimed in claim 62/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the acrylic grinding resin is the resin containing anchoring group with comb-type structure, and the surfactant is non-alkane
Base phenols surfactant.
10. nano-TiO as claimed in claim 12/ Nano-meter SiO_22Compound modified acrylic water-based paint compositions, its feature exists
In the mass ratio of the modified acrylic acid emulsion component and mill base component is 8:1.
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Application publication date: 20170704 |