CN113249017A - Water-based colored paint coating and preparation method and application thereof - Google Patents
Water-based colored paint coating and preparation method and application thereof Download PDFInfo
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- CN113249017A CN113249017A CN202110741137.2A CN202110741137A CN113249017A CN 113249017 A CN113249017 A CN 113249017A CN 202110741137 A CN202110741137 A CN 202110741137A CN 113249017 A CN113249017 A CN 113249017A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention provides a water-based colored paint coating and a preparation method and application thereof, wherein the water-based colored paint coating comprises the following components in parts by weight: 20.0-30.0 parts of waterborne polyester resin; 5.0-8.0 parts of water-based acrylic resin; 1.5-3.5 parts of a neutralizing agent; 5.0-10.0 parts of cosolvent; 20.0-33.0 parts of deionized water; 0.2-0.5 part of leveling agent; 0.1-0.6 part of substrate wetting agent; 0.3-0.7 part of defoaming agent; 7.0-10.0 parts of amino resin; 1.0-2.0 parts of adhesion promoter; 16.0 to 25.0 portions of water-based color paste. The water-based colored paint has good environmental protection performance, is suitable for single-coating when being applied to the surface of tricycle electrophoretic paint, can be constructed without preheating in the environment of 5-50 ℃, does not generate paint film defects such as edge flowing, foaming, shrinkage cavity and the like, has excellent adhesiveness, still has good glossiness and weather resistance in the state of not spraying finishing varnish, and has good tinting strength and covering power.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based colored paint coating as well as a preparation method and application thereof.
Background
The surface of the tricycle body requires a coating that provides decorative and corrosion resistant properties. The existing main coating process comprises the following steps: iron substrate-pretreatment-electrophoretic paint-curing-finish paint-finishing varnish-curing. Different manufacturers select single-coating finish paint or finish paint surface spraying finishing varnish according to requirements, and the finishing varnish mainly has the function of providing high gloss, high brightness, weather resistance and the like of the coating.
The early stage of the finish coat is mostly solvent-based paint, and the solvent-based paint cannot meet the requirements due to overhigh VOC content along with the continuous improvement of the environmental protection requirement. Water-based paint is also increasingly applied to the surface of tricycles, and is mainly used by matching finish paint with finishing varnish at present, however, tricycle coating manufacturers hope to simplify the process and preferably can meet the protection requirement of a single finish paint coating. However, if a single-coat topcoat is used on the surface of the electrodeposition paint, the following problems occur:
(1) the overall glossiness and brightness of the single-coating finish paint are greatly reduced compared with the coating (finish paint and finishing varnish) of the composite coating;
(2) with seasonal changes, the environmental temperature fluctuation is large, the defects of local paint accumulation, sagging, foaming and the like easily occur on a paint film under the condition that a workpiece is not preheated, the defects can be solved only by adding a preheating process (generally, the preheating interval needs to be 30-50 ℃), but more manufacturers do not have the preheating condition, so the production is limited;
if the solvent-based paint is adopted for production, the coating performance and the application performance can be both satisfied, but the environmental protection performance is poor.
Disclosure of Invention
Based on the above, an object of the embodiments of the present invention is to provide a water-based colored paint coating, which has good environmental protection performance, is suitable for single-coating when being applied to a surface of a tricycle electrophoretic paint, can be applied without preheating in an environment of 5-50 ℃, does not generate paint film defects such as edge flowing, foaming, shrinkage cavity, etc., has excellent adhesion, still has good glossiness and weather resistance in a state of not spraying a finishing varnish, and has good tinting strength and hiding power.
The water-based colored paint coating comprises the following components in parts by weight:
the water-based colored paint coating disclosed by the invention is low in VOC (volatile organic compound), meets the relevant requirements of tricycle coating, and has better environmental protection performance compared with a solvent-based coating; according to the invention, by selecting proper main resin and color paste for grinding and rationalizing the formula, the problems of overall glossiness and brightness when the paint is used as a single-coating finish paint are well solved, and the paint has good tinting strength and covering power while the glossiness is ensured; the coating can be directly constructed without preheating in an environment of 5-50 ℃, paint film defects such as edge flowing, foaming, shrinkage cavity and the like do not occur, and the coating has excellent performances such as adhesion, weather resistance and the like.
Further, the water-based polyester resin is 68-80% of solid and is a non-neutralized water-soluble polyester resin with a hydroxyl value of 80-130mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of the solid of the resin. Preferably, 1PB83Y (germany) can be used; 1PB84B (same Germany). The invention selects the water-soluble polyester resin with high gloss and high fullness, can meet the requirement of high brightness, and has better adhesive force with the electrophoretic paint.
Further, the water-soluble acrylic resin is a water-soluble acrylic resin with 30-50% of solid parts and a hydroxyl value of less than 90mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of the resin solid parts. Preferably, 1AB99W (germany) can be used. The water-based acrylic resin has wide compatibility and good pigment wettability.
Further, the cosolvent is a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is at least one of ethylene glycol butyl ether, diethylene glycol butyl ether or propylene glycol methyl ether, and the alcohol solvent is at least one of ethanol, isopropanol and n-butanol.
Preferably, the cosolvent is a mixture of ethylene glycol butyl ether and isopropanol, and the mass ratio of the ethylene glycol butyl ether to the isopropanol is 6:4-4: 6. The ethylene glycol butyl ether and the isopropanol are matched as the cosolvent, the ethylene glycol butyl ether has extremely strong dissolving capacity on a water-soluble acrylic acid and water-soluble polyester resin system, and the isopropanol with low boiling point is matched, so that the risk of defects such as paint accumulation and sagging at the construction edge under the low-temperature condition can be improved. The two are matched, so that the viscosity can be effectively reduced, and the construction defects under the low-temperature condition can be reduced.
Further, the amino resin is high imino methylated melamine formaldehyde resin with the solid content of not less than 80%. For example, the following may be used: CYMEL 325 (new) with 80% non-volatile; CYMEL327 (Zhanxin) with 90% non-volatile. The high imino methylated melamine formaldehyde resin selected by the invention has better reaction activity, and the main resin is water-soluble polyester resin, so that the combination of the main resin and the water-soluble polyester resin can ensure that a paint film has better coating performance.
Further, the water-based color paste is a home-made grinding color paste containing water-soluble acrylic resin, a dispersing agent, a pigment, deionized water, a cosolvent and a neutralizing agent, wherein the weight content of the water-soluble acrylic resin in the home-made grinding color paste is 5-15%. The color paste is prepared into application color pastes with different pigment concentrations according to the characteristics of the pigment, such as 10-12% of application black paste prepared from medium-high pigment carbon black and 15-20% of application paste prepared from phthalocyanine blue. The existing color paste disperses the pigment through a dispersing agent, when the paint contains more cosolvent, the stable state of the color paste is easy to destroy, the phenomena of precipitation, flocculation and the like occur, the color paste is easy to lose light after spraying, and the covering power is reduced. Further, the neutralizing agent is N, N-dimethylethanolamine, and the leveling agent is a polyacrylate solution, for example, BYK-3560 (BYK) can be used; the substrate wetting agent is polyether modified siloxane solution, such as BYK-346 (BYK), BYK-348 (BYK); the defoaming agent is at least one of a silicone defoaming agent or a mixture of hydrophobic particles and a foam breaking polymer, for example, BYK-028 (BYK) can be used; the adhesion promoter is a 60-80% solids modified epoxy resin, for example, VPG9723 (Guangzhou Wittii high synthetic materials, Inc.) may be used.
The invention also provides a preparation method of the water-based colored paint coating, which comprises the following steps:
s1: adding the waterborne polyester resin and the waterborne acrylic resin into an operating cylinder, and adding a neutralizing agent to adjust the pH value to 8.0-8.5 under the condition that the rotating speed is 500-800 rpm;
s2: adding a cosolvent under the condition that the rotating speed is 500-800 rpm, dispersing for 5min under the condition, then adding deionized water, and dispersing for 5-10min under the condition; deionized water is not suitable for being added prematurely, the direct water solubility of more water-soluble acrylic acid or water-soluble polyester resin is limited, excessive deionized water is added to cause particle precipitation or whitening, and the generated defects cannot be effectively eliminated by adding the cosolvent later, so that the cosolvent is added firstly to facilitate the blending of more deionized water;
s3: adding the flatting agent, the substrate wetting agent and the defoaming agent into an operating cylinder with the rotating speed of 500rpm-800rpm while dispersing,
dispersing for 5-10min under the condition;
s4: dispersing amino resin and adhesion promoter while adding into operating cylinder at 500-800 rpm, and dispersing for 5-10 min;
s5: adding the aqueous color paste into an operating cylinder with the rotating speed of 500-800 rpm while dispersing, and dispersing for 5-10min under the condition; the later addition of the water-based color paste can prevent the relatively stable damage of the later added materials to the colored paint system, and the defects of precipitation, flocculation, particles and the like. The addition at the stage can be blended on the basis of relative stability, and the gloss effect of the coating during coating is more excellent.
S6: adjusting the pH value: adjusting pH value to 8.0-8.5 with neutralizer, and dispersing at 800-1500 rpm for 20-30 min; (the pH value is adjusted in the last stage, the influence on the pH value of the system due to the addition of process materials is reduced, the too low pH value is not beneficial to the storage of the coating, and the too high pH value can cause the binding force between the finish coat and the electrophoretic paint coat due to the addition of a large amount of neutralizing agent).
S7: and (5) filtering and packaging.
The invention also provides an application of the water-based colored paint coating in a single-coating finish paint for a tricycle. The waterborne colored paint coating is only sprayed on the electrophoretic paint surface of the tricycle to serve as finish paint, and the tricycle surface still has good glossiness and weather resistance under the condition that finishing varnish is not sprayed; the coating can be constructed without preheating in an environment of 5-50 ℃, paint film defects such as edge flowing, foaming, shrinkage cavity and the like can not be generated, and the coating has good tinting strength and covering power.
For a better understanding and an enabling description of the present invention, reference will now be made in detail to the following examples.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited by the examples disclosed below.
The water-based colored paint coating comprises the following components in parts by weight:
in some specific embodiments, the water-soluble polyester resin can be selected from 68-80% of solid and unneutralized water-soluble polyester resin with hydroxyl value of 80-130mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of the solid of the resin, and the water-soluble polyester resin with high gloss and high fullness can meet the requirement of high brightness, and the selected material has good adhesion with the electrophoretic paint; the water-soluble acrylic resin can be selected from water-soluble acrylic resin with 30-50% of solid and a hydroxyl value lower than 90mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of resin solid, and the water-soluble acrylic resin has wide compatibility and better pigment wettability; the cosolvent can be a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is at least one of ethylene glycol butyl ether, diethylene glycol butyl ether or propylene glycol methyl ether, and the alcohol solvent is at least one of ethanol, isopropanol and n-butanol; the amino resin can be high imino methylated melamine formaldehyde resin with the solid content of not less than 80 percent, the high imino methylated melamine formaldehyde resin has better reaction activity, and the main resin is water-soluble polyester resin, and the combination of the main resin and the water-soluble polyester resin can ensure that a paint film has better coating performance; the water-based color paste can be self-made grinding color paste containing water-soluble acrylic resin, a dispersing agent, pigment, deionized water, a cosolvent and a neutralizing agent, wherein the weight content of the water-soluble acrylic resin in the self-made grinding color paste is 5-15%, and the risk of damaging the stability of the water-based color paste added into a resin base material is reduced due to the excellent pigment wettability, dispersibility and long-term stability of the water-soluble acrylic resin in the water-based color paste; the neutralizing agent can be N, N-dimethylethanolamine, and the leveling agent can be polyacrylate solution; the substrate wetting agent can be selected from polyether modified siloxane solution; the defoaming agent can be at least one of organic silicon defoaming agent or mixture of hydrophobic particles and foam breaking polymer; the adhesion promoter is 60-80% of solid modified epoxy resin.
Example 1
The water-based colored paint coating comprises the following components in parts by weight:
in this embodiment, the water-based polyester resin is a non-neutralized water-soluble polyester resin having 68% to 80% of solid content and a hydroxyl value of 80 to 130mgKOH/g, wherein the hydroxyl value is a hydroxyl content converted to 100% of the solid content of the resin, and 1PB84B (german) is specifically selected; the water-soluble acrylic resin is 30-50% of solid and has a hydroxyl value of less than 90mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of resin solid, and 1AB99W (Tongde) is specifically used; the neutralizing agent is N, N-dimethylethanolamine; the cosolvent is a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is ethylene glycol butyl ether, the alcohol solvent is isopropanol, the mass ratio of the ethylene glycol butyl ether to the isopropanol is 6:4-4:6, ethylene glycol butyl ether and the isopropanol are matched to serve as the cosolvent, the ethylene glycol butyl ether has extremely strong dissolving capacity on a water-soluble acrylic acid and water-soluble polyester resin system, and the isopropanol with a low boiling point is matched to improve the risks of defects such as paint accumulation and sagging at the construction edge under a low-temperature condition; the flatting agent is a polyacrylate solution, and specifically BYK-3560 (BYK); the substrate wetting agent is polyether modified siloxane solution, and specifically BYK-346 (BYK); the antifoaming agent uses BYK-028 (BYK); the amino resin is high imino methylated melamine formaldehyde resin with the solid content not less than 80 percent, and the amino resin is specifically used as follows: CYMEL 325 (new) with 80% non-volatile; the adhesion promoter is modified epoxy resin with 60-80% of solid, and concretely comprises VPG9723 (Guangzhou Wittii high synthetic material Co., Ltd.); the water-based color paste is a home-made grinding color paste containing water-soluble acrylic resin, a dispersing agent, a pigment, deionized water, a cosolvent and a neutralizing agent, in the embodiment, black paste is specifically applied, the pigment is medium-high pigment carbon black, wherein the water-soluble acrylic resin is specifically selected from 1AB99W (same de), the weight content of the water-soluble acrylic resin is 5%, and the weight content of the pigment is 10-12%.
Example 2
In this embodiment, the water-based polyester resin is a non-neutralized water-soluble polyester resin having 68% to 80% of solid content and a hydroxyl value of 80 to 130mgKOH/g, wherein the hydroxyl value is a hydroxyl content converted to 100% of the solid content of the resin, and 1PB83Y (german) is specifically selected; the water-soluble acrylic resin is 30-50% of solid and has a hydroxyl value of less than 90mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of resin solid, and 1AB99W (Tongde) is specifically used; the neutralizing agent is N, N-dimethylethanolamine; the cosolvent is a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is diethylene glycol monobutyl ether and propylene glycol monomethyl ether, and the alcohol solvent is ethanol; the flatting agent is a polyacrylate solution, and specifically BYK-3560 (BYK); the substrate wetting agent is polyether modified siloxane solution, and specifically BYK-348 (BYK); the antifoaming agent uses BYK-028 (BYK); the amino resin is high imino methylated melamine formaldehyde resin with the solid content not less than 80 percent, and the amino resin is specifically used as follows: CYMEL327 (new) 90% non-volatile; the adhesion promoter is modified epoxy resin with 60-80% of solid, and concretely comprises VPG9723 (Guangzhou Wittii high synthetic material Co., Ltd.); the water-based color paste is a home-made grinding color paste containing water-soluble acrylic resin, a dispersing agent, a pigment, deionized water, a cosolvent and a neutralizing agent, wherein in the embodiment, the pigment is 15:2 phthalocyanine blue, the water-soluble acrylic resin is specifically selected from 1AB99W (same as the former), the weight content of the water-soluble acrylic resin is 15%, and the weight content of the pigment is 15-20%.
Example 3
The water-based colored paint coating comprises the following components in parts by weight:
in this embodiment, the water-based polyester resin is a non-neutralized water-soluble polyester resin having 68% to 80% of solid content and a hydroxyl value of 80 to 130mgKOH/g, wherein the hydroxyl value is a hydroxyl content converted to 100% of the solid content of the resin, and 1PB84B (german) is specifically selected; the water-soluble acrylic resin is 30-50% of solid and has a hydroxyl value of less than 90mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of resin solid, and 1AB99W (Tongde) is specifically used; the neutralizing agent is N, N-dimethylethanolamine; the cosolvent is a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is ethylene glycol butyl ether, the alcohol solvent is isopropanol, the mass ratio of the ethylene glycol butyl ether to the isopropanol is 6:4-4:6, ethylene glycol butyl ether and the isopropanol are matched to serve as the cosolvent, the ethylene glycol butyl ether has extremely strong dissolving capacity on a water-soluble acrylic acid and water-soluble polyester resin system, and the isopropanol with a low boiling point is matched to improve the risks of defects such as paint accumulation and sagging at the construction edge under a low-temperature condition; the flatting agent is a polyacrylate solution, and specifically BYK-3560 (BYK); the substrate wetting agent is polyether modified siloxane solution, and specifically BYK-346 (BYK); the antifoaming agent uses BYK-028 (BYK); the amino resin is high imino methylated melamine formaldehyde resin with the solid content not less than 80 percent, and the amino resin is specifically used as follows: CYMEL 325 (new) with 80% non-volatile; the adhesion promoter is modified epoxy resin with 60-80% of solid, and concretely comprises VPG9723 (Guangzhou Wittii high synthetic material Co., Ltd.); the water-based color paste is a home-made grinding color paste containing water-soluble acrylic resin, a dispersing agent, a pigment, deionized water, a cosolvent and a neutralizing agent, in the embodiment, black paste is specifically applied, the pigment is medium-high pigment carbon black, wherein the water-soluble acrylic resin is specifically selected from 1AB99W (same de), the weight content of the water-soluble acrylic resin is 10%, and the weight content of the pigment is 10-12%.
Example 4
The embodiment provides a preparation method of the water-based colored paint coating of the embodiment 1-3, which comprises the following steps:
s1: adding the waterborne polyester resin and the waterborne acrylic resin into an operating cylinder, and adding a neutralizing agent to adjust the pH value to 8.0-8.5 under the condition that the rotating speed is 500-800 rpm;
s2: adding a cosolvent under the condition that the rotating speed is 500-800 rpm, dispersing for 5min under the condition, then adding deionized water, and dispersing for 5-10min under the condition; deionized water is not suitable for being added prematurely, the direct water solubility of more water-soluble acrylic acid or water-soluble polyester resin is limited, excessive deionized water is added to cause particle precipitation or whitening, and the generated defects cannot be effectively eliminated by adding the cosolvent later, so that the cosolvent is added firstly to facilitate the blending of more deionized water;
s3: adding the flatting agent, the substrate wetting agent and the defoaming agent into an operating cylinder with the rotating speed of 500-800 rpm while dispersing, and dispersing for 5-10min under the condition;
s4: dispersing amino resin and adhesion promoter while adding into operating cylinder at 500-800 rpm, and dispersing for 5-10 min;
s5: adding the aqueous color paste into an operating cylinder with the rotating speed of 500-800 rpm while dispersing, and dispersing for 5-10min under the condition; the later addition of the water-based color paste can prevent the relatively stable damage of the later added materials to the colored paint system, and the defects of precipitation, flocculation, particles and the like. The addition at the stage can be blended on the basis of relative stability, and the gloss effect of the coating during coating is more excellent.
S6: adjusting the pH value: adjusting pH value to 8.0-8.5 with neutralizer, and dispersing at 800-1500 rpm for 20-30 min; (the pH value is adjusted in the last stage, the influence on the pH value of the system due to the addition of process materials is reduced, the too low pH value is not beneficial to the storage of the coating, and the too high pH value can cause the binding force between the finish coat and the electrophoretic paint coat due to the addition of a large amount of neutralizing agent).
S7: and (3) filtering and packaging: filtering and packaging with 5-10 μm filter bag filter.
Example 5
The application method of the water-based colored paint of the embodiment 1-3 is that the water-based colored paint is sprayed on the electrophoretic paint on the surface of the tricycle substrate to be used as a single-coating finish paint, and the finishing varnish is not sprayed.
Example 6
The performance test items, detection methods and index requirements of the water-based colored paint for the tricycle are shown in the following table 1:
TABLE 1 aqueous color paint for tricycle, coating performance detection method and standard index
In order to better illustrate the technical solution of the present invention, two comparative examples of the prior art and examples of the present invention are selected below for further comparison, and the test results are shown in table 2. Wherein, the comparative example 1 and the comparative example 2 are commercial water paint products for tricycles.
TABLE 2 Performance test Table for the water-based colored paint coatings of examples 1 to 3 and the water-based paint products of comparative examples 1 to 2
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A water-based colored paint coating is characterized in that: the paint comprises the following components in parts by weight:
2. the water-borne color paint coating according to claim 1, characterized in that: the water-based polyester resin is water-soluble polyester resin with 68-80% of solid content and hydroxyl value of 80-130mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of resin solid content.
3. The water-borne color paint coating according to claim 1, characterized in that: the water-soluble acrylic resin is 30-50% of solid and has a hydroxyl value of less than 90mgKOH/g, wherein the hydroxyl value is the hydroxyl content converted into 100% of the resin solid.
4. The water-borne color paint coating according to claim 1, characterized in that: the cosolvent is a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is at least one of ethylene glycol butyl ether, diethylene glycol butyl ether or propylene glycol methyl ether, and the alcohol solvent is at least one of ethanol, isopropanol and n-butanol.
5. The water-based paint coating of claim 4, characterized in that: the cosolvent is a mixture of ethylene glycol butyl ether and isopropanol, and the mass ratio of the ethylene glycol butyl ether to the isopropanol is 6:4-4: 6.
6. The water-borne color paint coating according to claim 1, characterized in that: the amino resin is high imino methylated melamine formaldehyde resin with the solid content of not less than 80 percent.
7. The water-borne color paint coating according to claim 1, characterized in that: the water-based color paste is a home-made grinding color paste containing water-soluble acrylic resin, a dispersing agent, a pigment, deionized water, a cosolvent and a neutralizing agent, wherein the weight content of the water-soluble acrylic resin in the home-made grinding color paste is 5-15%.
8. The water-borne color paint coating according to claim 1, characterized in that: the neutralizer is N, N-dimethylethanolamine, the leveling agent is a polyacrylate solution, the substrate wetting agent is a polyether modified siloxane solution, the defoaming agent is at least one of an organic silicon defoaming agent or a mixture of hydrophobic particles and a foam breaking polymer, and the adhesion promoter is 60-80% of solid modified epoxy resin.
9. The preparation method of the water-based colored paint coating is characterized by comprising the following steps:
s1: adding the waterborne polyester resin and the waterborne acrylic resin into an operating cylinder, and adding a neutralizing agent to adjust the pH value to 8.0-8.5 under the condition that the rotating speed is 500-800 rpm;
s2: adding a cosolvent under the condition that the rotating speed is 500-800 rpm, dispersing for 5min under the condition, then adding deionized water, and dispersing for 5-10min under the condition;
s3: adding the flatting agent, the substrate wetting agent and the defoaming agent into an operating cylinder with the rotating speed of 500-800 rpm while dispersing, and dispersing for 5-10min under the condition;
s4: dispersing amino resin and adhesion promoter while adding into operating cylinder at 500-800 rpm, and dispersing for 5-10 min;
s5: adding the aqueous color paste into an operating cylinder with the rotating speed of 500-800 rpm while dispersing, and dispersing for 5-10min under the condition;
s6: adjusting the pH value: adjusting pH value to 8.0-8.5 with neutralizer, and dispersing at 800-1500 rpm for 20-30 min;
s7: and (5) filtering and packaging.
10. Use of the water-borne color paint coating according to any one of claims 1 to 8 as a single-coat top-coat for a tricycle.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116285555A (en) * | 2023-03-17 | 2023-06-23 | 佩特化工(上海)有限公司 | Colored paint coating for polypropylene substrate and preparation method and application thereof |
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| CN109535909A (en) * | 2018-10-30 | 2019-03-29 | 河北晨阳工贸集团有限公司 | Aqueous anti-settling metallic paint and preparation method thereof |
| CN112680050A (en) * | 2020-12-31 | 2021-04-20 | 广东四方威凯新材料有限公司 | Water-based paint and preparation method thereof |
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2021
- 2021-06-30 CN CN202110741137.2A patent/CN113249017A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018041128A1 (en) * | 2016-08-30 | 2018-03-08 | 河北晨阳工贸集团有限公司 | Aqueous amino baking paint and preparation method therefor |
| CN108822674A (en) * | 2018-04-03 | 2018-11-16 | 河北晨阳工贸集团有限公司 | Automobile-used aqueous assorted metal flash paint of a kind of three-wheel and preparation method thereof |
| CN109535909A (en) * | 2018-10-30 | 2019-03-29 | 河北晨阳工贸集团有限公司 | Aqueous anti-settling metallic paint and preparation method thereof |
| CN112680050A (en) * | 2020-12-31 | 2021-04-20 | 广东四方威凯新材料有限公司 | Water-based paint and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN116285555A (en) * | 2023-03-17 | 2023-06-23 | 佩特化工(上海)有限公司 | Colored paint coating for polypropylene substrate and preparation method and application thereof |
| CN116285555B (en) * | 2023-03-17 | 2024-02-02 | 佩特化工(上海)有限公司 | Colored paint coating for polypropylene substrate and preparation method and application thereof |
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