CN113817368A - High-performance water-based metal base paint for automobiles - Google Patents
High-performance water-based metal base paint for automobiles Download PDFInfo
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- CN113817368A CN113817368A CN202110809028.XA CN202110809028A CN113817368A CN 113817368 A CN113817368 A CN 113817368A CN 202110809028 A CN202110809028 A CN 202110809028A CN 113817368 A CN113817368 A CN 113817368A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
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Abstract
The invention discloses a high-performance water-based metal base paint for automobiles, which has the beneficial effect of providing the high-performance water-based metal base paint for the automobiles through technological innovation. The high-performance water-based metal primer for the automobile is prepared by the cross repeated verification of multi-side screening of different models of different manufacturers of main resin, multi-family selection of pigments and fillers and dosage proportion.
Description
Technical Field
The invention relates to the technical field of water-based paint, in particular to high-performance water-based metal base color paint for automobiles.
Background
Under the pressure of national environmental protection policy, water-based coatings are being developed vigorously. However, in the automobile industry, the high-end water-based paint has few domestic brands and is basically monopolized by foreign enterprises. The comprehensive performance of the amino resin is not outstanding, the adhesive force cupping and the cone bend are common, and the harsh water resistance test (80 ℃ for 4h and a test within 5 minutes) is not qualified. The scheme is generated by deeply researching the problems in view of the fact that the orientation of aluminum powder is influenced after the non-water-soluble mixed ether or the butylated amino resin is added by a common process and the qualified metal paint cannot be prepared.
Disclosure of Invention
The invention aims to solve the problems, designs the high-performance water-based metal base paint for the automobile and solves the problem that the existing qualified metal paint cannot be prepared.
The technical scheme of the invention for realizing the aim is as follows: the high-performance water-based metal base paint for the automobile comprises 20 parts of water-based acrylic emulsion, 15 parts of water-based aliphatic polyurethane dispersoid, 1.5 parts of water-based anti-settling auxiliary agent, 1.5 parts of substrate wetting agent, 3 parts of aluminum paste, 0.6 part of passivating agent, 4 parts of isooctyl alcohol, 3 parts of ethylene glycol isooctyl ether, 0.3 part of defoaming agent, 0.1 part of dispersing agent, 0.7 part of pH regulator, 4 parts of methylated amino resin, 3 parts of methylated and n-butyl etherified melamine formaldehyde resin, 34 parts of deionized water, 0.1 part of thickening agent, 1.5 parts of cosolvent and 0.2 part of water-based leveling agent.
Preferably, the substrate wetting agent is a surface adjuvant, is silicone-free, and is used for preventing surface defects such as boiling marks, pinholes, bubbles, orange peel and craters and improving leveling in aqueous coatings.
Preferably, the defoaming agent is an acetylene glycol ethoxy compound, has low dynamic tension, is nonionic, has good compatibility and HLB (hydrophile-lipophile balance) of 8, and is recommended to be used in the industries of water-based ink, water-based paint and water-based adhesive.
Preferably, the dispersant is a copolymer containing pigment affinic groups.
Preferably, the thickener is a polyurethane-type thickener.
A production process of high-performance water-based metal base paint for automobiles comprises the following steps: step S1, stirring and melting; step S2, passivation; step S3, removing impurities; step S4, secondary passivation;
in the step S1, firstly, aluminum powder, isooctanol and dispersant are dispersed for 15 minutes at the stirring speed of 500 r/min;
in the step S2, adding a passivating agent, stirring for 1 hour, and slowly adding ethylene glycol isooctyl ether/mixed alkylated methylated and n-butylated melamine formaldehyde resin to keep rotating speed for dispersing for 15 minutes;
in the step S3, sequentially adding a pH regulator, a waterborne aliphatic polyurethane dispersion and a defoaming agent into the acrylic emulsion at the speed of 500r/min, stirring for 15min, and then adding an anti-settling agent at 1000 r/min;
and step S4, slowly adding the prepared passivated aluminum paste 1000r/min, stirring for 60 minutes, then adding the leveling agent and water, stirring for 15 minutes, filtering and packaging.
Preferably, in the step S3, after stirring for 15 minutes, 15 parts of water, partially methylated melamine resin, cosolvent, substrate wetting agent and thickener are sequentially added while adjusting the rotation speed to 500 r/min.
The invention aims to provide the high-performance water-based metal base paint for the automobile through technological innovation. The high-performance water-based metal primer for the automobile is prepared by multi-side screening of different models of different manufacturers of main resin, multi-family selection of pigments and fillers and cross repeated verification of dosage proportion.
Drawings
FIG. 1 is a production method of the high-performance water-based metal base paint for the automobile.
Detailed Description
The invention is described in detail with reference to the accompanying drawings, and as shown in fig. 1, the invention provides a high-performance water-based metal base paint for automobiles, which comprises 20 parts of water-based acrylic emulsion, 15 parts of water-based aliphatic polyurethane dispersoid, 1.5 parts of water-based anti-settling auxiliary agent, 1.5 parts of substrate wetting agent, 3 parts of aluminum paste, 0.6 part of passivating agent, 4 parts of isooctyl alcohol, 3 parts of ethylene glycol isooctyl ether, 0.3 part of defoaming agent, 0.1 part of dispersing agent, 0.7 part of pH regulator, 4 parts of methylated amino resin, 3 parts of methylated and n-butyl etherified melamine formaldehyde resin, 34 parts of deionized water, 0.1 part of thickening agent, 1.5 parts of cosolvent and 0.2 part of water-based leveling agent; the substrate wetting agent is a surface auxiliary agent, does not contain organic silicon, is used for preventing surface defects such as boiling marks, pinholes, bubbles, orange peel and shrinkage cavities of the water-based paint, and improves leveling; the defoaming agent is an acetylene glycol ethoxy compound, has low dynamic tension, is non-ionic, has good compatibility and HLB (hydrophile-lipophile balance) of 8, and is recommended to be used in the industries of water-based ink, water-based paint and water-based adhesive; the dispersing agent is a copolymer containing pigment affinity groups; the thickening agent is a polyurethane type thickening agent.
A production process of high-performance water-based metal base paint for automobiles comprises the following steps: step S1, stirring and melting; step S2, passivation; step S3, removing impurities; step S4, secondary passivation;
in the step S1, firstly, aluminum powder, isooctanol and dispersant are dispersed for 15 minutes at the stirring speed of 500 r/min;
in the step S2, adding a passivating agent, stirring for 1 hour, and slowly adding ethylene glycol isooctyl ether/mixed alkylated methylated and n-butylated melamine formaldehyde resin to keep rotating speed for dispersing for 15 minutes;
in the step S3, sequentially adding a pH regulator, a waterborne aliphatic polyurethane dispersion and a defoaming agent into the acrylic emulsion at the speed of 500r/min, stirring for 15min, and then adding an anti-settling agent at 1000 r/min;
step S4, slowly adding the prepared passivated aluminum paste at 1000r/min, stirring for 60 minutes, then adding the leveling agent and water, stirring for 15 minutes, filtering and packaging; and step S3, after stirring for 15 minutes, adjusting the rotating speed to 500r/min, and sequentially adding 15 parts of water, part of methylated melamine resin, a cosolvent, a base material wetting agent and a thickening agent.
The embodiment is characterized by comprising 20 parts of aqueous acrylic emulsion, 15 parts of aqueous aliphatic polyurethane dispersion, 1.5 parts of aqueous anti-settling auxiliary agent, 1.5 parts of substrate wetting agent, 3 parts of aluminum paste, 0.6 part of passivating agent, 4 parts of isooctyl alcohol, 3 parts of ethylene glycol isooctyl ether, 0.3 part of defoaming agent, 0.1 part of dispersing agent, 0.7 part of PH regulator, 4 parts of methylated amino resin, 3 parts of methylated and n-butyl etherified melamine formaldehyde resin, 34 parts of deionized water, 0.1 part of thickening agent, 1.5 parts of cosolvent and 0.2 part of aqueous flatting agent; the invention aims to provide a high-performance water-based metal base paint for automobiles through technological innovation. The high-performance water-based metal primer for the automobile is prepared by the cross repeated verification of multi-side screening of different models of different manufacturers of main resin, multi-family selection of pigments and fillers and dosage proportion.
All the electrical components and the adaptive power supplies thereof are connected through leads by those skilled in the art, and an appropriate controller should be selected according to actual conditions to meet control requirements, and specific connection and control sequences should be obtained.
Example (b): firstly, aluminum powder, isooctanol and dispersant are dispersed for 15 minutes at the stirring speed of 500r/min, then adding a passivating agent and stirring for 1 hour, then slowly adding ethylene glycol isooctyl ether, mixing alkylated methylated and n-butylated melamine formaldehyde resin, keeping the rotating speed for dispersing for 15 minutes, sequentially adding a pH regulator, a water-based aliphatic polyurethane dispersoid and a defoaming agent into the acrylic emulsion at the speed of 500r/min, stirring for 15 minutes, adding an anti-settling agent 1000r/min, stirring for 15 minutes, adjusting the rotating speed to 500r/min, sequentially adding 15 parts of water, partial methylated melamine resin, cosolvent, substrate wetting agent and thickening agent, stirring for 20min, slowly adding the prepared passivated aluminum paste at 1000r/min, stirring for 60 min, adding a leveling agent and water, stirring for 15 minutes, and filtering and packaging, wherein the water-based acrylic emulsion is SETAQUA 9803 of Zhanxin (China) Co; the aqueous aliphatic polyurethane dispersion is DAOTAN VTW 1236 from shinkan (chinese) ltd; the substrate wetting agent is BYKETOL WA (surface auxiliary agent, containing no organosilicon, used for preventing surface defects such as boiling marks, pinholes, bubbles, orange peel and shrinkage cavities of a water-based coating and improving the leveling.) the defoaming agent is SURFYNOL440 (which is an acetylene glycol ethoxylate, has low dynamic tension, is nonionic, has good compatibility, has HLB (HLB is 8, and is recommended to be used in the industries of water-based ink, water-based coating and water-based adhesive) in air chemical engineering; the dispersant is a copolymer containing pigment affinic groups, such as DISPERBYK 192 from BYK (bick). (VOC and solvent free wetting dispersants for liquid color concentrates used in waterborne coating systems, printing inks and thermoplastics, and for producing color pastes for unsaturated polyester systems or gel coats. is particularly useful for producing stable effect pigment dispersions.) aluminum pastes are produced by the general solvent aluminum pastes, Shandong dun metallic pigment Co., Ltd.; the amino resin is used in chemical production of Changchun. The partially methylated melamine 670 (without acid catalysis, solvent isobutanol, partial dissolution in water.) hybrid alkylated methylated and n-butylated melamine formaldehyde MR2052 (without strong acid catalyst for fast cure, solvent n-butanol, water-insoluble) thickeners are polyurethane-type thickeners, RM-8W of Rohm and Haas (RM-8W is a low odor, solvent-free aqueous nonionic associative rheology modifier (hydrophobically modified polyurethane) that provides excellent flow and leveling, uniform film forming, gloss development, and high thickening efficiency.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions will all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (7)
1. The high-performance water-based metal base paint for the automobile comprises 20 parts of water-based acrylic emulsion, 15 parts of water-based aliphatic polyurethane dispersoid, 1.5 parts of water-based anti-settling auxiliary agent, 1.5 parts of substrate wetting agent, 3 parts of aluminum paste, 0.6 part of passivating agent, 4 parts of isooctyl alcohol, 3 parts of ethylene glycol isooctyl ether, 0.3 part of defoaming agent, 0.1 part of dispersing agent, 0.7 part of pH regulator, 4 parts of methylated amino resin, 3 parts of methylated and n-butyl etherified melamine formaldehyde resin, 34 parts of deionized water, 0.1 part of thickening agent, 1.5 parts of cosolvent and 0.2 part of water-based leveling agent.
2. The high-performance water-based metal base paint for the automobile as claimed in claim 1, wherein the substrate wetting agent is a surface auxiliary agent, does not contain organosilicon, and is used for water-based paint to prevent surface defects such as boiling marks, pinholes, bubbles, orange peel and shrinkage cavity and improve leveling.
3. The high-performance water-based metal base paint for the automobiles as claimed in claim 1, wherein the defoaming agent is an acetylene glycol ethoxylate, has low dynamic tension, is non-ionic, has good compatibility and HLB (hydrophile-lipophile balance) of 8, and is recommended to be used in the industries of water-based ink, water-based paint and water-based adhesive.
4. The high-performance aqueous metallic basecoat of claim 1 wherein said dispersant is a copolymer containing pigment affinic groups.
5. The high-performance aqueous metallic basecoat of claim 1 wherein said thickener is a polyurethane-based thickener.
6. A production process of high-performance water-based metal base paint for automobiles comprises the following steps: step S1, stirring and melting; step S2, passivation; step S3, removing impurities; step S4, secondary passivation;
in the step S1, firstly, aluminum powder, isooctanol and dispersant are dispersed for 15 minutes at the stirring speed of 500 r/min;
in the step S2, adding a passivating agent, stirring for 1 hour, and slowly adding ethylene glycol isooctyl ether/mixed alkylated methylated and n-butylated melamine formaldehyde resin to keep rotating speed for dispersing for 15 minutes;
in the step S3, sequentially adding a pH regulator, a waterborne aliphatic polyurethane dispersion and a defoaming agent into the acrylic emulsion at the speed of 500r/min, stirring for 15min, and then adding an anti-settling agent for 1000 r/min;
and step S4, slowly adding the prepared passivated aluminum paste 1000r/min, stirring for 60 minutes, then adding the leveling agent and water, stirring for 15 minutes, filtering and packaging.
7. The production process of the high-performance water-based metal primer for the automobile according to claim 1, wherein in the step S3, after stirring for 15 minutes, 15 parts of water, partially methylated melamine resin, cosolvent, substrate wetting agent and thickener are added in sequence at a rotation speed of 500 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110809028.XA CN113817368A (en) | 2021-07-16 | 2021-07-16 | High-performance water-based metal base paint for automobiles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110809028.XA CN113817368A (en) | 2021-07-16 | 2021-07-16 | High-performance water-based metal base paint for automobiles |
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| CN113817368A true CN113817368A (en) | 2021-12-21 |
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| CN109401506A (en) * | 2018-10-08 | 2019-03-01 | 王玉廷 | A kind of aqueous interference-type pearly-lustre metallic finishe of automobile and preparation method thereof |
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2021
- 2021-07-16 CN CN202110809028.XA patent/CN113817368A/en active Pending
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