CN117304761A - Water-based color-changing Long Kaoqi coating - Google Patents
Water-based color-changing Long Kaoqi coating Download PDFInfo
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- CN117304761A CN117304761A CN202311470936.6A CN202311470936A CN117304761A CN 117304761 A CN117304761 A CN 117304761A CN 202311470936 A CN202311470936 A CN 202311470936A CN 117304761 A CN117304761 A CN 117304761A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000012972 dimethylethanolamine Substances 0.000 claims abstract description 60
- 229920003180 amino resin Polymers 0.000 claims abstract description 38
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 34
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 34
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 32
- 229960002887 deanol Drugs 0.000 claims abstract description 32
- 239000000080 wetting agent Substances 0.000 claims abstract description 30
- 241000122205 Chamaeleonidae Species 0.000 claims abstract description 29
- 239000008367 deionised water Substances 0.000 claims abstract description 24
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 15
- 229910052709 silver Inorganic materials 0.000 claims abstract description 14
- 239000004332 silver Substances 0.000 claims abstract description 14
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000006229 carbon black Substances 0.000 claims abstract description 12
- 239000013530 defoamer Substances 0.000 claims abstract description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 238000009736 wetting Methods 0.000 claims description 6
- 229920003275 CYMEL® 325 Polymers 0.000 claims description 2
- 229920003270 Cymel® Polymers 0.000 claims description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000002966 varnish Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000049 pigment Substances 0.000 abstract description 4
- 239000003086 colorant Substances 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 30
- 238000002156 mixing Methods 0.000 description 24
- 239000002002 slurry Substances 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 9
- 239000008213 purified water Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000006386 neutralization reaction Methods 0.000 description 6
- 238000005238 degreasing Methods 0.000 description 4
- 239000005002 finish coating Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an aqueous color-changing Long Kaoqi coating, which comprises a primer layer and a finish paint layer covered on the primer layer, wherein the finish paint layer comprises the following components in parts by weight: 18-22 parts of water-based acrylic resin, 1.5-2.2 parts of dimethylethanolamine DMEA, 60-62 parts of deionized water, 0.8-1.2 parts of silver row auxiliary agent, 1.5-2.5 parts of adhesive force auxiliary agent, 5-7 parts of amino resin, 0.25-0.35 part of wetting agent, 0.15-0.25 part of dispersing agent and 6-9 parts of chameleon powder; the primer layer comprises the following components in parts by weight: 65-85 parts of water-based acrylic resin, 0.15-0.25 part of dimethylethanolamine DMEA, 9-11 parts of deionized water, 1.5-2.5 parts of diethylene glycol butyl ether, 1.5-2.5 parts of ethylene glycol butyl ether, 0.5-1.5 parts of special defoamer, 10-12 parts of amino resin, 0.15-0.25 part of wetting agent, 1.5-2.5 parts of adhesive force auxiliary agent and 9-11 parts of carbon black color paste; solves the problems of poor adhesion, hardness, alcohol resistance and salt fog resistance of the existing baking varnish layer; and chameleon powder is used as an effect pigment, so that the coating has different colors from different angles and has good decorative feel.
Description
Technical Field
The invention relates to the technical field of water-based paint, in particular to a water-based color-changing Long Kaoqi coating.
Background
The paint used for spraying the metal base and the metal surface frame is mainly solvent-type paint. Solvent-based coatings not only cause serious environmental pollution, but also are unsafe to produce and have certain harm to the health of staff. Therefore, the coating of the above work is required to be aqueous.
At present, the water-based baking varnish on the market mainly uses water-soluble acrylic resin and silver powder for application on the base and the frame of the household appliance, and has the advantages of short service life and weak color change at all angles due to poor appearance, adhesive force, wear resistance, recoating, alcohol resistance, orientation and salt spray resistance.
Disclosure of Invention
The invention aims to provide a water-based color-changing Long Kaoqi composite coating, wherein the primer and the finish paint are both formed by taking water-based acrylic resin and amino resin as film forming substances, and the water-based acrylic resin and the amino resin undergo a crosslinking reaction under the high-temperature condition so as to solve the problems of adhesive force, hardness, alcohol resistance and poor salt fog of the existing baking varnish; in addition, the top paint uses chameleon powder as an effect pigment on the basis, so that the coating has different colors from different angles and has good decorative feel.
The invention is realized by the following technical scheme: an aqueous color-changing Long Kaoqi coating, which comprises a primer layer and a top-coat layer covered on the primer layer, wherein the top-coat layer comprises the following components in parts by weight:
18-22 parts of water-based acrylic resin,
1.5 to 2.2 parts of dimethylethanolamine DMEA,
60-62 parts of deionized water,
0.8-1.2 parts of silver row auxiliary agent,
1.5 to 2.5 parts of adhesive force auxiliary agent,
5-7 parts of amino resin,
0.25-0.35 part of wetting agent,
0.15-0.25 part of dispersing agent,
6-9 parts of chameleon powder.
The primer layer comprises the following components in parts by weight:
65-85 parts of water-based acrylic resin,
dimethyl ethanolamine DMEA0.15-0.25 weight portions,
9-11 parts of deionized water,
1.5 to 2.5 parts of diethylene glycol butyl ether,
1.5 to 2.5 parts of ethylene glycol butyl ether,
0.5 to 1.5 portions of special defoamer,
10-12 parts of amino resin,
0.15-0.25 part of wetting agent,
1.5 to 2.5 parts of adhesive force auxiliary agent,
9-11 parts of carbon black color paste.
Preferably, the top coat layer comprises the following components in parts by weight:
20 parts of water-based acrylic resin,
1.8 parts of dimethylethanolamine DMEA,
61 parts of deionized water,
1 part of silver row auxiliary agent,
2 parts of adhesive force auxiliary agent,
6 parts of amino resin, and the like,
0.3 part of wetting agent, and the like,
0.2 part of wetting dispersant, and the like,
8 parts of chameleon powder.
Preferably, the primer layer comprises the following components in parts by weight:
70 parts of water-based acrylic resin,
dimethylethanolamine DMEA 0.2 parts,
10 parts of deionized water,
2 parts of diethylene glycol butyl ether,
2 parts of ethylene glycol butyl ether,
0.8 part of an antifoaming agent, and the like,
11 parts of an amino resin, and the amino resin,
0.2 part of wetting agent, and the like,
2 parts of adhesive force auxiliary agent,
10 parts of carbon black color paste;
preferably, the silver deposit aid is selected from the group consisting of Pick BYK 8421.
Preferably, the adhesion promoter is Libo 2062.
Preferably, the amino resin is selected from CYMEL 325 amino resins.
Preferably, the wetting agent is selected from Tego 270 wetting agents.
Preferably, the dispersant is selected from the group consisting of the Pick BYK192 dispersant.
The amino resin of the primer is selected from CYMEL 327 amino resin, and the defoamer is BYK-028 of BYK.
The preparation method of the primer comprises the following steps:
step a, premixing ethylene glycol butyl ether and diethylene glycol butyl ether;
step b, weighing the water-borne acrylic resin, slowly pouring the mixture prepared in the step a, and mixing for 10min to ensure that the resin is completely and uniformly mixed;
step c, adding dimethylethanolamine DMEA, adding a small amount of dimethylethanolamine DMEA for multiple times to ensure the stability of the system, and stirring for 10min; adding deionized water, and stirring for 5min;
step d, adding a defoaming agent, a wetting agent and an adhesive force auxiliary agent, and dispersing at a high speed for 15min;
step e, adding amino resin, uniformly mixing, adding carbon black color paste, and stirring for 10min to obtain a primer;
the preparation method of the finishing paint comprises the following steps:
step a, mixing the aqueous acrylic resin with dimethylethanolamine DMEA, adding the dimethylethanolamine DMEA a small amount of times to ensure complete neutralization, and then stirring for 10min; adding deionized water, and stirring for 5min;
step b, adding silver row auxiliary agent, wetting agent, dispersing agent and adhesive force auxiliary agent, and stirring for 5min;
step c, adding amino resin, uniformly mixing, adding chameleon powder, and stirring for 10min to obtain finish paint;
the preparation method of the water-based chameleon baking varnish coating comprises the following steps:
degreasing the base material aluminum plate 1, and polishing for later use;
mixing the primer with purified water according to the proportion of 1:0.1-0.3 to obtain primer slurry;
coating the polished aluminum plate with the primer slurry, and then baking at a first preset temperature to obtain a cured primer layer;
mixing the finish paint with purified water according to the proportion of 1:0.1-0.2 to obtain finish paint slurry;
and coating the finish paint slurry on the cured primer layer, and then baking at a second preset temperature to obtain the chameleon baking finish paint layer.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the finish paint adopts the high-grade acrylic resin, takes the water-based acrylic resin and the amino resin as film forming substances, and generates crosslinking reaction under the high-temperature condition so as to solve the problems of adhesion force, hardness, alcohol resistance and poor salt fog between the existing water-based baking finish paint layers; pigment, chameleon powder, functional filler, special import auxiliary agent and the like are used as effect pigments, so that the coating has different colors from different angles and has good decorative sense. The obtained coating has the following characteristics: excellent physical properties, good chemical resistance, good orientation, strong metallic feeling and strong color change at all angles.
2. The primer enhances the adhesive force between the coating and the base aluminum plate through the acrylic resin and the adhesive force promoter, and then takes part in the crosslinking reaction through the amino resin, so that the salt spray resistance is improved. Furthermore, the acrylic resin of the finish paint has good compatibility with the primer and strong adhesive force, so that the invention has strong adhesive force; the paint film is smooth and has adjustable luster;
3. the invention is diluted by adding clear water, is not burnt or exploded, and has good water resistance, solvent resistance and color retention.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of a chameleon baking finish coating provided by the invention;
the reference numerals are represented as follows: 1-substrate aluminum plate, 2-primer layer and 3-finish layer.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention. It should be noted that the present invention is already in a practical development and use stage.
Example 1
An aqueous color-changing Long Kaoqi coating, which comprises a primer layer and a top-coat layer covered on the primer layer, wherein the top-coat layer comprises the following components in parts by weight:
an aqueous acrylic resin 20, which is a water-based acrylic resin,
dimethylethanolamine DMEA 1.8,
deionized water 61 is provided to the apparatus,
a silver row auxiliary agent 1,
the adhesive force aid 2 is used for the purpose of,
an amino resin 6, which is a polymer,
0.3 part of wetting agent, wherein the wetting agent is a water-soluble polymer,
0.2 part of the dispersant, wherein the dispersant is a compound containing at least one of the components of the formula,
chameleon powder 8.
The primer layer comprises the following components in parts by weight:
70 parts of water-based acrylic resin,
dimethylethanolamine DMEA 0.2,
deionized water 10,
diethylene glycol butyl ether 2, which is a mixture of diethylene glycol butyl ether,
ethylene glycol butyl ether 2 is used as the main component,
0.8 part of the defoaming agent,
the amino resin 11 is used as a base material,
0.2 part of wetting agent, wherein the wetting agent is a water-soluble polymer,
the adhesive force aid 2 is used for the purpose of,
carbon black paste 10.
The preparation method of the primer comprises the following steps:
step a, premixing ethylene glycol butyl ether and diethylene glycol butyl ether;
b, adding the aqueous acrylic resin into the mixture obtained in the step a, and mixing for 10min to ensure that the resin is completely and uniformly mixed;
step c, adding dimethylethanolamine DMEA, adding a small amount of dimethylethanolamine DMEA for multiple times to ensure complete neutralization, and stirring for 10min; adding deionized water, and stirring for 5min;
step d, adding a defoaming agent, a wetting agent and an adhesive force auxiliary agent, and stirring for 5min;
step e, adding amino resin, uniformly mixing, adding carbon black color paste, and stirring for 10min to obtain a primer;
the preparation method of the finishing paint comprises the following steps:
step a, mixing the aqueous acrylic resin with dimethylethanolamine DMEA, adding the dimethylethanolamine DMEA a small amount of times to ensure complete neutralization, and then stirring for 10min; adding deionized water, and stirring for 5min;
step b, adding silver row auxiliary agent, wetting agent, dispersing agent and adhesive force auxiliary agent, and stirring for 5min;
step c, adding amino resin, uniformly mixing, adding chameleon powder, and stirring for 10min to obtain finish paint;
a method for preparing an aqueous chameleon baking finish coating, comprising the following steps:
degreasing the base material aluminum plate 1, and polishing for later use;
mixing the primer with purified water according to the proportion of 1:0.1 to obtain primer slurry;
coating the primer slurry on the upper layer of the prepared substrate, and then baking at a first preset temperature to obtain a cured primer layer 2;
mixing the finish paint with purified water according to the proportion of 1:0.2 to obtain finish paint slurry;
and (3) coating the finish slurry on the cured primer layer, and then baking at a second preset temperature to obtain the chameleon baking finish layer 3. The resulting chameleon coated panel is shown in FIG. 1.
Example 2
An aqueous color-changing Long Kaoqi coating, which comprises a primer layer and a top-coat layer covered on the primer layer, wherein the top-coat layer comprises the following components in parts by weight:
an aqueous acrylic resin 18, which is a mixture of a water-based acrylic resin and a water-based acrylic resin,
dimethylethanolamine DMEA1.5,
deionized water 60 is used to remove the water,
0.8 percent of silver row auxiliary agent,
1.5 parts of an adhesive force aid,
an amino resin 5,
0.25 part of wetting agent, which is used for wetting the surface of the substrate,
0.15 part of dispersant, wherein the dispersant is a compound selected from the group consisting of,
chameleon powder 6.
The primer layer comprises the following components in parts by weight:
65 parts of water-based acrylic resin,
dimethylethanolamine DMEA0.15,
deionized water 9,
1.5 percent of diethylene glycol butyl ether,
1.5 percent of ethylene glycol butyl ether,
0.5 part of special defoaming agent,
the amino resin 10 is used as a base material,
0.15 part of wetting agent, which is used for wetting the surface of the substrate,
1.5 parts of an adhesive force aid,
carbon black paste 9.
The preparation method of the primer comprises the following steps:
step a, premixing ethylene glycol butyl ether and diethylene glycol butyl ether;
step b, weighing the water-borne acrylic resin, slowly pouring the mixture prepared in the step a, and mixing for 10min to ensure that the resin is completely and uniformly mixed;
step c, adding dimethylethanolamine DMEA, adding a small amount of dimethylethanolamine DMEA for multiple times to ensure the stability of the system, and stirring for 10min; adding deionized water, and stirring for 5min;
step d, adding a defoaming agent, a wetting agent and an adhesive force auxiliary agent, and dispersing at a high speed for 15min;
step e, adding amino resin, uniformly mixing, adding carbon black color paste, and stirring for 10min to obtain a primer;
the preparation method of the finishing paint comprises the following steps:
step a, mixing the aqueous acrylic resin with dimethylethanolamine DMEA, adding the dimethylethanolamine DMEA a small amount of times to ensure complete neutralization, and then stirring for 10min; adding deionized water, and stirring for 5min;
step b, adding silver row auxiliary agent, wetting agent, dispersing agent and adhesive force auxiliary agent, and stirring for 5min;
step c, adding amino resin, uniformly mixing, adding chameleon powder, and stirring for 10min to obtain finish paint;
a method for preparing an aqueous chameleon baking finish coating, comprising the following steps:
degreasing the base material aluminum plate 1, and polishing for later use;
mixing the primer with purified water according to the proportion of 1:0.2 to obtain primer slurry;
coating the primer slurry on the upper layer of the prepared substrate, and then baking at a first preset temperature to obtain a cured primer layer 2;
mixing the finish paint with purified water according to the proportion of 1:0.1 to obtain finish paint slurry;
and (3) coating the finish slurry on the cured primer layer, and then baking at a second preset temperature to obtain the chameleon baking finish layer 3. The resulting chameleon coated panel is shown in FIG. 1.
Example 3
An aqueous color-changing Long Kaoqi coating, which comprises a primer layer and a top-coat layer covered on the primer layer, wherein the top-coat layer comprises the following components in parts by weight:
the aqueous acrylic resin 22 is used as a solvent,
dimethylethanolamine DMEA 2.2 is used as the catalyst,
deionized water 62,
1.2 parts of silver row auxiliary agent,
2.5 parts of an adhesive force aid,
an amino resin 7,
0.35 part of wetting agent, which is used for wetting the surface of the substrate,
0.25 part of the dispersing agent, and the water is mixed with the water,
chameleon powder 9.
The primer layer comprises the following components in parts by weight:
85 parts of water-based acrylic resin,
dimethylethanolamine DMEA 0.25,
deionized water 11,
diethylene glycol butyl ether 2.5,
ethylene glycol butyl ether 2.5 percent,
1.5 parts of special defoamer,
the amino resin 12 is a polymer of a polymer,
0.25 part of wetting agent, which is used for wetting the surface of the substrate,
2.5 parts of an adhesive force aid,
carbon black paste 11.
The preparation method of the primer comprises the following steps:
step a, premixing ethylene glycol butyl ether and diethylene glycol butyl ether;
b, adding the aqueous acrylic resin into the mixture obtained in the step a, and mixing for 10min to ensure that the resin is completely and uniformly mixed;
step c, adding dimethylethanolamine DMEA, adding a small amount of dimethylethanolamine DMEA for multiple times to ensure complete neutralization, and stirring for 10min; adding deionized water, and stirring for 5min;
step d, adding a defoaming agent, a wetting agent and an adhesive force auxiliary agent, and stirring for 5min;
step e, adding amino resin, uniformly mixing, adding carbon black color paste, and stirring for 10min to obtain a primer;
the preparation method of the finishing paint comprises the following steps:
step a, mixing the aqueous acrylic resin with dimethylethanolamine DMEA, adding the dimethylethanolamine DMEA a small amount of times to ensure complete neutralization, and then stirring for 10min; adding deionized water, and stirring for 5min;
step b, adding silver row auxiliary agent, wetting agent, dispersing agent and adhesive force auxiliary agent, and stirring for 5min;
step c, adding amino resin, uniformly mixing, adding chameleon powder, and stirring for 10min to obtain finish paint;
a method for preparing an aqueous chameleon baking finish coating, comprising the following steps:
degreasing the base material aluminum plate 1, and polishing for later use;
mixing the primer with purified water according to a ratio of 1:01 to obtain primer slurry;
coating the primer slurry on the upper layer of the prepared substrate, and then baking at a first preset temperature to obtain a cured primer layer 2;
mixing the finish paint with purified water according to the proportion of 1:0.2 to obtain finish paint slurry;
and (3) coating the finish slurry on the cured primer layer, and then baking at a second preset temperature to obtain the chameleon baking finish layer 3. The resulting chameleon coated panel is shown in FIG. 1.
The results and the test standards of the chameleon baking finish layer obtained in example 1 are shown in Table 1:
TABLE 1
| Project | Index (I) | Reference standard |
| Paint film color and appearance | Meets the standard template and the color difference range thereof, and is smooth | Visual inspection |
| Solids content% | 23±2 | GB/T1725 |
| Gloss level | 30-60 (negotiable) | GB/T9754 |
| Hardness (Pencil) | ≥2H | GB/T6739 |
| Flexibility mm | ≤1mm | GB/T1731 |
| Adhesion grade | Grade 1 or less | GB/T1720 |
| Boiling-resistant water boiling | Not less than 2 hours, no bubbling and no falling off | GB/T1733 |
| Salt spray resistance | More than or equal to 300h (primer film thickness 15-20 mu m, top coat 15-20 mu m) | GB/T1771 |
| RCA test | More than or equal to 200 times | ASTMF2357-04 |
| Alcohol resistant wiping (1 kg) | More than or equal to 500 times | GB/T23989 |
As can be seen from the table, the chameleon baking varnish for spraying prepared by the scheme improves the surface defect of the baking varnish after being formed into a film, has the effects of salt spray resistance and alcohol wiping resistance, and has strong adhesive force.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The water-based color-changing Long Kaoqi coating is characterized by comprising a primer layer and a top-coat layer covered on the primer layer, wherein the top-coat layer comprises the following components in parts by weight:
18-22 parts of water-based acrylic resin,
1.5 to 2.2 parts of dimethylethanolamine DMEA,
60-62 parts of deionized water,
0.8-1.2 parts of silver row auxiliary agent,
1.5 to 2.5 parts of adhesive force auxiliary agent,
5-7 parts of amino resin,
0.25-0.35 part of wetting agent,
0.15-0.25 part of dispersing agent,
6-9 parts of chameleon powder.
2. The aqueous color-changing Long Kaoqi coating according to claim 1, wherein the primer layer comprises the following components in parts by weight:
65-85 parts of water-based acrylic resin,
dimethyl ethanolamine DMEA0.15-0.25 weight portions,
9-11 parts of deionized water,
1.5 to 2.5 parts of diethylene glycol butyl ether,
1.5 to 2.5 parts of ethylene glycol butyl ether,
0.5 to 1.5 portions of special defoamer,
10-12 parts of amino resin,
0.15-0.25 part of wetting agent,
1.5 to 2.5 parts of adhesive force auxiliary agent,
9-11 parts of carbon black color paste.
3. The aqueous color-changing Long Kaoqi coating according to claim 1, wherein the topcoat layer comprises the following components in parts by weight: 20 parts of water-based acrylic resin,
1.8 parts of dimethylethanolamine DMEA,
61 parts of deionized water,
1 part of silver row auxiliary agent,
2 parts of adhesive force auxiliary agent,
6 parts of amino resin, and the like,
0.3 part of wetting agent, and the like,
0.2 part of wetting dispersant, and the like,
8 parts of chameleon powder.
4. The aqueous color-changing Long Kaoqi coating according to claim 2, wherein the primer layer comprises the following components in parts by weight:
70 parts of water-based acrylic resin,
dimethylethanolamine DMEA 0.2 parts,
10 parts of deionized water,
2 parts of diethylene glycol butyl ether,
2 parts of ethylene glycol butyl ether,
0.8 part of an antifoaming agent, and the like,
11 parts of an amino resin, and the amino resin,
0.2 part of wetting agent, and the like,
2 parts of adhesive force auxiliary agent,
10 parts of carbon black color paste.
5. The aqueous color shifting Long Kaoqi coating of claim 1, wherein: the silver discharging auxiliary agent is selected from Pick BYK 8421.
6. The aqueous color shifting Long Kaoqi coating according to any one of claims 1 to 4, wherein: the adhesive force auxiliary agent is Libo 2062.
7. The aqueous color shifting Long Kaoqi coating of claim 1, wherein: the amino resin is selected from CYMEL 325 amino resin.
8. The aqueous color shifting Long Kaoqi coating according to any one of claims 1 to 4, wherein: the wetting agent is selected from Tego 270 wetting agents.
9. The aqueous color shifting Long Kaoqi coating of claim 1, wherein: the dispersant is selected from the group consisting of the Pick BYK192 dispersant.
10. The aqueous color shifting Long Kaoqi coating according to claim 2, wherein: the amino resin is selected from CYMEL 327 amino resin, and the defoamer is BYK-028 of BYK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311470936.6A CN117304761A (en) | 2023-11-07 | 2023-11-07 | Water-based color-changing Long Kaoqi coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311470936.6A CN117304761A (en) | 2023-11-07 | 2023-11-07 | Water-based color-changing Long Kaoqi coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117304761A true CN117304761A (en) | 2023-12-29 |
Family
ID=89246523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311470936.6A Pending CN117304761A (en) | 2023-11-07 | 2023-11-07 | Water-based color-changing Long Kaoqi coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117304761A (en) |
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2023
- 2023-11-07 CN CN202311470936.6A patent/CN117304761A/en active Pending
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