CN109181461A - A kind of environment-friendly water-based Automotive Metallic Coatings and preparation method thereof - Google Patents
A kind of environment-friendly water-based Automotive Metallic Coatings and preparation method thereof Download PDFInfo
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- CN109181461A CN109181461A CN201811169790.0A CN201811169790A CN109181461A CN 109181461 A CN109181461 A CN 109181461A CN 201811169790 A CN201811169790 A CN 201811169790A CN 109181461 A CN109181461 A CN 109181461A
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Classifications
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
-
- 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
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
Abstract
The invention discloses a kind of environment-friendly water-based Automotive Metallic Coatings and preparation method thereof.The environment-friendly water-based Automotive Metallic Coatings include following components: aqueous polyurethane grafted acrylic emulsion, water-compatible amino resin, water aluminum-silver slurry, defoaming agent, wetting agent, thickener, amine neutralizer and deionized water.Aqueous automobile metal flash paint provided by the invention has good dispersion performance and stability, the paint film of formation is rich in color, metal-like is strong, the clarity DOI grade of paint film has reached the film requirement (DOI >=1.0) of high-grade car, and weathering durability is good, it is environment friendly and pollution-free, meet sedan limousine cosmetic requirement.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of environment-friendly water-based Automotive Metallic Coatings and its preparation side
Method.
Background technique
Over the past two years, as raising and auto industry energy-saving and emission-reduction of the whole world to environmental protection requirement are constantly goed deep into,
Car paint hydropositive, high solid, powdery paints direction are developed, wherein water paint be most prospect technology it
One.Car paint supplier is devoted to the aqueous automobile paint that exploitation has excellent appearance and color, traditional to replace
Solvent based coating.Wherein automobile metal paint captures car paint half of the country, and silver color therein accounts for the close of color share
20%.
The effect pigment of silver paint is tiny squamaceous aluminium powder, and aluminium powder has metallic luster and is parallel to the spy of coated article
Sign, in the carrier containing transparent pigment, the glossiness and shade of aluminium powder are sent out with the variation at incident light angle and visual angle
The variation of the third contact of a total solar or lunar eclipse and color, and show different brightness, the appearance property with metal-like that color constantly changes.Aluminium paint
Appearance greatly meet people to automobile appearance colouring, animation requirement.
However, the water-based metal metallic finishe using aluminium powder as effect pigment there is a problem of it is following more: 1) in order to prevent
Aluminium powder reacts with water, generates aluminium oxide and aluminium hydroxide, and release hydrogen, causes aluminium powder surface to be shaded, influences paint film
Appearance, it is necessary to the surface treatment such as wrapped up aluminium powder or be passivated, and the aqueous aluminum powder after surface treatment is generally difficult to point
It dissipates, is very easy to reunite, greatly limits the exploitation of metal flash paint.2) the aluminium powder stability dispersed is poor, very sensitive to pH value,
Mixed acidic materials will form acid particle in paint, so that generating gelatinization destroys water paint.3) containing a large amount of in water paint
Water cannot quickly volatilize in spraying process, not only influence metallic paint aluminium powder pigment arrangement orientation, generate color it is bad, also
Film defect can be generated, such as easy sagging, flattening property is bad, is also easy to produce the defects of pin hole, shrinkage cavity.4) water resistance, resistance toization of paint film
The level of solvent type metal flash paint is not achieved in the property learned and weatherability.5) physical mechanical property of paint film is dodged compared with solvent type metal
Lac varnish is poor.
The prior art mainly passes through the formula composition for improving metal flash paint, to overcome above-mentioned defect.Such as Publication No.
The Chinese patent application of CN102604497A discloses a kind of water-based metal metallic finishe and preparation method thereof, water-based metal flash of light
It paints composed of the following components: acrylic copolymer aqueous dispersion -1, amino resins, BYK-028, dimethylethanolamine, water, aqueous
Aluminium powder, dispersing agent, butyl glycol ether, BYK-347, BYK-425, aqueous polyurethane, polyurethane dispersant and acetate butyrate fiber
Element, water-based metal metallic finishe obtained have good gloss and flash effect.Separately have in Publication No. CN 106916497A
State's patent application discloses a kind of preparation method of aqueous metal flash paint of stably dispersing type automobile, and this method is by extracting tea
Inside leaf slag after polysaccharide, modification liquid is prepared through carboxymethyl-modification, aqueous aluminum powder is prepared by modification liquid, is compounded with water-base resin
Aqueous dispersion superior metal metallic finishe is prepared, the resulting aqueous metal flash paint of stably dispersing type automobile has good dispersion
Performance and stability, no pollution to the environment have good gloss and flash effect.
Although the prior art has obtained many progress to the improvement of metal flash paint, but still new it is necessary to provide one kind
Environment-friendly water-based flash metal luster paint formula is maximized favourable factors and minimized unfavourable ones on the basis of each feature of original coating, further increases its properties
Index preferably meets the market demand.
Summary of the invention
The object of the present invention is to provide a kind of environment-friendly water-based Automotive Metallic Coatings and preparation method thereof, the metal flash paints
With good dispersion performance and stability, the paint film of formation is rich in color, and metal-like is strong, and weathering durability is good, environmental protection
It is pollution-free.
The present invention is achieved by the following technical programs:
A kind of environment-friendly water-based Automotive Metallic Coatings, comprise the following components in parts by weight:
It is preferred that the environment-friendly water-based Automotive Metallic Coatings, comprise the following components in parts by weight:
The present invention also provides formula of a kind of water aluminum-silver slurry and preparation method thereof, make water aluminum-silver slurry obtained not only
High metallic luster is kept, but also there is preferable dispersion performance and stability, the water aluminum-silver slurry includes following
The component of parts by weight: 50~60 parts of flake aluminum, 20~30 parts of ethyl orthosilicate, 3~5 parts of silane quaternary BFS60, silane
Coupling agent KH-5605~10 part, 4~8 parts of dimethylcarbinol, 4~10 parts of 2-amino-2-methyl-1-propanol and butyl glycol ether
20~30 parts, appropriate ammonium hydroxide.
It is preferred that the partial size of the flake aluminum is 10~25 μm.
The preparation of the water aluminum-silver slurry the following steps are included:
S1: by flake aluminum, silane quaternary BFS60, silane coupling agent KH-560, dimethylcarbinol, 2- amino -2- first
Base -1- propyl alcohol and butyl glycol ether, are placed in reaction kettle and are stirred 1~2h with 100~200r/min, obtain dispersion mixing
Object；
S2: suitable ammonium hydroxide being added into the dispersed mixture of S1, adjusts pH value to 8~9, is 50~60 DEG C in temperature
Under, ethyl orthosilicate is slowly added dropwise, 5~6h of sustained response when being added dropwise obtains reaction solution；
S3: after reaction solution is cooling, dispersing 30~60min with 500~600r/min, crosses 400 meshes to get aqueous aluminium silver
Slurry.
It joined silane quaternary BFS60 in water aluminum-silver slurry formula provided by the invention, flake aluminum surface can be increased
Positive charge, and reduce the surface tension of aluminium powder, the SiO for generating teos hydrolysis2It is distributed in aluminium to even compact
Powder surface forms the SiO of one layer of even compact2Silane coupling agent KH-560,2-amino-2-methyl-1-propanol etc. is added in film
Auxiliary element is conducive to improve water aluminum-silver slurry in the dispersibility and stability of water paint, adds to water aluminum-silver slurry aqueous
It after coating, it is not necessary that dispersing agent is added, can be dispersed in water paint, the stability of water paint storage separately can be improved,
Coating is set to rise the disadvantages such as tank, nigrescence without general aqueous silver paint.
The defoaming agent is Digao Airex 902W；
The wetting agent is U.S.'s aerochemistry surfynol 104.
The thickener is alkali swollen thickener and association thickener with 1:(0.2~0.3) mass ratio form.
It is preferred that the alkali swollen thickener is ROHM AND HAAS ASE60, the association thickener be extra large name this
1070。
The amine neutralizer is this MA-95 of extra large name.
Aqueous polyurethane grafted acrylic emulsion of the present invention is provided by Shanghai Tuo Jia printing material Co., Ltd,
Name of product is the polyurethane grafted acrylic emulsion of TJ-06 50%.
The water-compatible amino resin is profound new Cymel 325, profound new Cymel 327, BASF Luwipal 052 or bar
This husband Luwipal 073.
It is main film forming substance that the present invention, which selects polyurethane grafted acrylic emulsion, and having wear-resisting, bright, soft has bullet
Property, the characteristics such as mechanical mechanics, weatherability be all good, water-compatible amino resin is added and carries out crosslinking curing, there is film excellent
Water resistance.
In addition, the present invention also provides a kind of preparation method of environment-friendly water-based Automotive Metallic Coatings, this method includes
Following steps:
S1: under 400~500 revs/min of mixing speed, by aqueous polyurethane grafted acrylic emulsion, aqueous amino tree
Rouge, defoaming agent, wetting agent, thickener, amine neutralizer sequentially add in deionized water, stir 30~60min；
S2: and then water aluminum-silver slurry is added into the material of S1 step, 100~200 revs/min, stirring 20~30 minutes, i.e.,
?.
Compared with prior art, the invention has the following advantages:
(1) rate of drying of environment-friendly water-based Automotive Metallic Coatings provided by the invention is fast, and the paint film of formation is smooth, rich
Full, smooth, uniform color, glossiness is high, adhesion is good, with excellent water resistance and good wear-resisting, solvent resistant, weather-proof etc.
Performance also has both good storage stability, rises the disadvantages such as tank, nigrescence without general aqueous silver paint.
(2) environment-friendly water-based Automotive Metallic Coatings provided by the invention meet requirement of the 2C1B coating process to coating, greatly
Cost has been saved greatly, reduces energy consumption, has the advantages that energy-saving and emission-reduction.
Specific embodiment
The following examples are further illustrations of the invention, rather than limiting the invention.
The preparation of 1 water aluminum-silver slurry of embodiment
The present embodiment water aluminum-silver slurry includes the component of parts by weight shown in the following table 1:
The formula composition of 1 water aluminum-silver slurry of table
It is formulated the preparation of 1 water aluminum-silver slurry, comprising the following steps:
S1: by flake aluminum, silane quaternary BFS60, silane coupling agent KH-560, dimethylcarbinol, 2- amino -2- first
Base -1- propyl alcohol and butyl glycol ether, are placed in reaction kettle and are stirred 1.5h with 150r/min, obtain dispersed mixture；
S2: suitable ammonium hydroxide being added into the dispersed mixture of S1, adjusts pH value to 9, in the case where temperature is 60 DEG C, slowly drips
Add ethyl orthosilicate, the sustained response 6h when being added dropwise obtains reaction solution；
S3: after reaction solution is cooling, 40min is dispersed with 550r/min, crosses 400 meshes to get water aluminum-silver slurry.
The preparation step for being formulated 2-5 water aluminum-silver slurry refers to above-mentioned formula 1.
The preparation of 2 water-based metal metallic finishe of embodiment
The present embodiment water-based metal metallic finishe includes the component of parts by weight shown in the following table 2:
The formula composition of 2 water-based metal metallic finishe of table
(1) preparation method:
S1: under 450 revs/min of mixing speed, by aqueous polyurethane grafted acrylic emulsion, water-compatible amino resin, disappear
Infusion, wetting agent, thickener, amine neutralizer sequentially add in deionized water, stir 60min；
S2: and then water aluminum-silver slurry being added into the material of S1 step, 100 revs/min, stir 30 minutes to get.
(2) water-based metal metallic finishe performance detection:
Ground is cold-rolled steel sheet, after cleaning by degreasing drying, carries out sample making, flash metal luster by 2C1B process flow requirement
Paint is with a thickness of 14 μm, coating varnish with a thickness of 40 μm, wherein metal flash paint is made from above-mentioned formula 1-5, and varnish is solvent
Type Amino Polyester baking vanish, testing result are shown in Table 3.
3 water-based metal metallic finishe performance test results of table
The results show that water-based metal metallic finishe provided by the invention has good workability, there is high metal luster, and
Clarity grade reaches 1.0DOI value or more, and the imaging definition with mirror surface meets the film requirement of high-grade car, has simultaneously
There are excellent water resistance, resistance to acid and alkali, artificial weathering ageing resistance and wet-hot aging performance, and adhesive force is high.
The preparation of 3 water-based metal metallic finishe of embodiment
Embodiment 3 is in the case where guaranteeing that each substance classes are constant in the formula of embodiment 21, to change the throwing of each content of material
Material formula see the table below shown in 4, and water-based metal metallic finishe is prepared according to the technical process of embodiment 2.
The formula composition of 4 water-based metal metallic finishe of table
By formula 6~8 preparation the performance for obtaining water-based metal metallic finishe it is as shown in table 5, with 3 performance comparison of table it is found that
When the content of each substance in water-based metal flash of light paint formula exceeds range disclosed in this invention, obtained water-based metal glistens
The performance of paint is decreased obviously, especially when the proportion of the polyurethane grafted acrylic emulsion of TJ-06 50% and water-compatible amino resin is super
The scope of the present invention out is affected to the performance test results of water-based metal metallic finishe.
5 water-based metal metallic finishe performance test results of table
The preparation of comparative example 1-3 water-based metal metallic finishe
Comparative example 1-3 water-based metal metallic finishe includes the component of parts by weight shown in the following table 6:
The formula composition of 6 water-based metal metallic finishe of table
The performance test results of comparative example 1-3 water-based metal metallic finishe are shown in Table 7.
7 water-based metal metallic finishe performance test results of table
The results show that the performance of water-based metal metallic finishe various aspects made from comparative example 1-3 is weakened, show aqueous
Aluminum paste not only influences the plate face effect of metal paint film, has an effect on the mechanical performance and weather resistance of paint film.By comparative example 1 and 2
It is prepared it is found that the water aluminum-silver slurry that the formula of embodiment 14 and 5 is prepared is added in flash metal luster paint formula, acquisition
Metal flash paint workability and plate face effect are substantially reduced, and the film of high-grade car is not achieved in the clarity DOI grade of paint film
It is required that (DOI >=1.0), and glossiness is substantially reduced.By comparative example 3 it is found that replacing this hair using commercially available water aluminum-silver slurry
The metal flash paint workability of bright water aluminum-silver slurry, acquisition is slightly worse, and plate face effect reduces, the clarity DOI grade of paint film
The film requirement of high-grade car is not achieved.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (10)
1. a kind of environment-friendly water-based Automotive Metallic Coatings, which is characterized in that comprise the following components in parts by weight:
2. environment-friendly water-based Automotive Metallic Coatings according to claim 1, which is characterized in that the group including following parts by weight
Point:
3. environment-friendly water-based Automotive Metallic Coatings according to claim 1 or 2, which is characterized in that the aqueous aluminium silver
Slurry comprises the following components in parts by weight: 50~60 parts of flake aluminum, 20~30 parts of ethyl orthosilicate, silane quaternary BFS60 3
~5 parts, 5~10 parts of silane coupling agent KH-560,4~8 parts of dimethylcarbinol, 4~10 parts of 2-amino-2-methyl-1-propanol and
20~30 parts of butyl glycol ether, appropriate ammonium hydroxide.
4. environment-friendly water-based Automotive Metallic Coatings according to claim 3, which is characterized in that the grain of the flake aluminum
Diameter is 10~25 μm.
5. environment-friendly water-based Automotive Metallic Coatings according to claim 3, which is characterized in that the water aluminum-silver slurry
Preparation the following steps are included:
S1: by flake aluminum, silane quaternary BFS60, silane coupling agent KH-560, dimethylcarbinol, 2- amino-2-methyl-
1- propyl alcohol and butyl glycol ether, are placed in reaction kettle and are stirred 1~2h with 100~200r/min, obtain dispersed mixture；
S2: suitable ammonium hydroxide being added into the dispersed mixture of S1, adjusts pH value to 8~9, in the case where temperature is 50~60 DEG C, delays
Slow that ethyl orthosilicate is added dropwise, 5~6h of sustained response when being added dropwise obtains reaction solution；
S3: after reaction solution is cooling, 30~60min is dispersed with 500~600r/min, crosses 400 meshes to get water aluminum-silver slurry.
6. environment-friendly water-based Automotive Metallic Coatings according to claim 1, which is characterized in that the defoaming agent is Digao
Airex902W；The wetting agent is U.S.'s aerochemistry surfynol 104.
7. environment-friendly water-based Automotive Metallic Coatings according to claim 1, which is characterized in that the thickener is alkali soluble
Swollen thickener and association thickener are with 1:(0.2~0.3) mass ratio form.
8. environment-friendly water-based Automotive Metallic Coatings according to claim 7, which is characterized in that alkali swollen thickener is sieve door
Haas ASE60, the association thickener be extra large name this 1070.
9. environment-friendly water-based Automotive Metallic Coatings according to claim 1, which is characterized in that the amine neutralizer is sea
This MA-95 of name.
10. a kind of method for preparing environment-friendly water-based Automotive Metallic Coatings described in claim 1, which is characterized in that including with
Lower step:
S1: under 400~500 revs/min of mixing speed, by aqueous polyurethane grafted acrylic emulsion, water-compatible amino resin, disappear
Infusion, wetting agent, thickener, amine neutralizer sequentially add in deionized water, stir 30~60min；
S2: and then water aluminum-silver slurry being added into the material of S1 step, 100~200 revs/min, stir 20~30 minutes to get.
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| CN201811169790.0A CN109181461B (en) | 2018-10-08 | 2018-10-08 | Environment-friendly water-based automobile metal flashing paint and preparation method thereof |
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| CN115895446A (en) * | 2022-11-24 | 2023-04-04 | 江苏四方威凯科技有限公司 | Water-based low-temperature anti-freezing coating suitable for automobile hub and preparation method thereof |
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| CN115895446A (en) * | 2022-11-24 | 2023-04-04 | 江苏四方威凯科技有限公司 | Water-based low-temperature anti-freezing coating suitable for automobile hub and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109181461B (en) | 2020-11-17 |
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