CN112280408A - High-chroma automobile varnish and preparation method thereof - Google Patents
High-chroma automobile varnish and preparation method thereof Download PDFInfo
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- CN112280408A CN112280408A CN202011250443.8A CN202011250443A CN112280408A CN 112280408 A CN112280408 A CN 112280408A CN 202011250443 A CN202011250443 A CN 202011250443A CN 112280408 A CN112280408 A CN 112280408A
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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
- C09D133/04—Homopolymers or copolymers of esters
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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
- 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
- C09D7/65—Additives macromolecular
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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
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a high-chroma automobile varnish, and relates to the field of automobile coatings. The high-chroma automobile varnish comprises the following components in parts by weight: 50-60 parts of hydroxyl acrylic resin, 10-20 parts of butyl acetate, 10-20 parts of propylene glycol methyl ether acetate, 5-10 parts of ethylene glycol diacetate, 4-8 parts of PR179CAB color chip, 3-5 parts of dispersant, 0.1-0.5 part of flatting agent and 0.01-0.05 part of drier. The invention provides a high-chroma automobile varnish with plump appearance and high gloss and a preparation method thereof.
Description
Technical Field
The invention relates to the field of automobile coatings, in particular to high-chroma automobile varnish and a preparation method thereof.
Background
At present, the automobile color on the market is more and more colorful, such as Mazda soul crystal red and other colors, and the brightness of the automobile body color can not be achieved by using the refinishing paint product of the traditional technology.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art and provide the high-chroma automobile varnish with full appearance and high gloss and the preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the high-chroma automobile varnish comprises the following components in parts by weight: 50-60 parts of hydroxyl acrylic resin, 10-20 parts of butyl acetate, 10-20 parts of propylene glycol methyl ether acetate, 5-10 parts of ethylene glycol diacetate, 4-8 parts of PR179CAB color chip, 3-5 parts of dispersant, 0.1-0.5 part of flatting agent and 0.01-0.05 part of drier.
Hydroxyacrylic resins, available from Sanbo trade, Inc., of Shunde district, mountain, fo; PR179 is a pigment International color number, available from Toyo ink Inc.; CAB color chips are prepared by grinding Cellulose Acetate Butyrate (CAB) as resin carrier to obtain pre-dispersed product with small fineness.
The invention selects PR179CAB color sheet with high chroma and high transparency as the pigment, combines the hydroxyl acrylic resin, the compatibility of the two is good, and the hydroxyl acrylic resin is matched with the CAB resin in the CAB color sheet, thereby improving the paint film hardness under the self-drying condition.
Preferably, the high-chroma automobile varnish comprises the following components in parts by weight: 60 parts of hydroxyl acrylic resin, 11.79 parts of butyl acetate, 10 parts of propylene glycol methyl ether acetate, 5 parts of ethylene glycol diacetate, 8 parts of PR179CAB color chip, 5 parts of dispersing agent, 0.2 part of flatting agent and 0.01 part of drier.
Preferably, the dispersing agent is at least one of EFKA-4310, BYK-163 and Luborun 32500, the leveling agent is fluorine modified acrylate LD-1087, and the drier is dibutyltin dilaurate.
EFKA-4310 is dispersant Effka 4310, available from Yitong polymers, Inc. of Guangzhou; BYK-163 is a German Bike dispersant, purchased from Dongyang chemical Co., Ltd of Jiangmen; luborun 32500 was purchased from Jiangmen Kangyi chemical technology, Inc.; fluorine-modified acrylate LD-1087, available from Cilida resins, Inc., of Yangzhou.
The invention also provides a preparation method of the high-chroma automobile varnish, which comprises the following steps:
(1) uniformly stirring and mixing butyl acetate, propylene glycol methyl ether acetate and ethylene glycol diacetate to obtain a mixed solution A;
(2) adding a dispersing agent into the mixed solution A obtained in the step (1), and stirring to obtain a mixed solution B;
(3) adding PR179CAB color chips into the mixed solution B obtained in the step (2), and stirring to obtain mixed solution C;
(4) and (3) passing the mixed solution C through a sand mill, adding hydroxyl acrylic resin, fluorine modified acrylate LD-1087 and dibutyltin dilaurate drier after the fineness of the mixed solution C is less than or equal to 8um, and stirring to obtain the high-chroma automobile varnish.
According to the preparation method of the high-chroma automobile varnish, provided by the invention, the color brightness is higher after the grinding of the 4 th sand mill.
Preferably, in the step (1), the rotation speed of stirring is 270-.
Preferably, in the step (2), the rotation speed of stirring is 270-.
Preferably, in the step (3), the rotation speed of stirring is 720-880r/min, and the stirring time is 55-65 min.
Preferably, in the step (4), the rotation speed of the sand mill is 1200-.
Preferably, in the step (4), the rotation speed of stirring is 450-.
Compared with the prior art, the invention has the beneficial effects that:
(1) the PR179CAB color sheet is selected as the pigment, has high transparency and high chroma, is higher than the chroma and the transparency of the color paste of the conventional grinding pigment by more than 50 percent, is suitable for being applied to the spraying of high-chroma red automobile, and solves the problem that the high-chroma red automobile paint is difficult to repair.
(2) The PR179 color piece and the hydroxy acrylic resin with good compatibility are selected, so that the problems of turbidity, even coarseness and the like caused by incompatibility of the conventional CAB color piece and the two-component hydroxy acrylic resin are solved.
(3) The high-hydroxyl acrylic resin is selected, the varnish has plump appearance and high gloss, and is matched with CAB resin in CAB color chips, so that the paint film hardness under the self-drying condition is improved.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.
The color paste is prepared by the following steps of 1-3, selecting the components and parts by weight of specific examples 1-3 as shown in table 1, 1-3, selecting the components and parts by weight of comparative examples 1 and 2 as shown in table 1, and 3 being a traditional color paste formula:
TABLE 1 selection of Components and parts by weight of examples 1-3 and comparative examples 1-2
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| Hydroxy acrylic resin | 50 | 60 | 60 | - | - |
| D modest 3660P resin | - | - | - | 60 | - |
| Nepets 1753 resin | - | - | - | - | 60 |
| Acetic acid butyl ester | 10 | 20 | 11.79 | 11.79 | 11.79 |
| Propylene glycol methyl ether acetate | 10 | 20 | 10 | 10 | 10 |
| Ethylene glycol diacetate | 5 | 10 | 5 | 5 | 5 |
| PR179CAB color chip | 4 | 8 | 8 | 8 | 8 |
| Dispersing agent | 3 | 5 | 5 | 5 | 5 |
| Fluorine modified acrylic ester LD-1087 | 0.1 | 0.5 | 0.2 | 0.2 | 0.2 |
| Dibutyl tin dilaurate | 0.01 | 0.05 | 0.01 | 0.01 | 0.01 |
The preparation method of the high-chroma automobile varnish in the examples and the comparative examples comprises the following steps of:
(1) uniformly stirring and mixing butyl acetate, propylene glycol methyl ether acetate and ethylene glycol diacetate at the stirring speed of 270r/min to obtain a mixed solution A;
(2) adding a dispersing agent into the mixed solution A obtained in the step (1), and stirring at the rotating speed of 270-;
(3) adding PR179CAB color chips into the mixed solution B obtained in the step (2), and stirring at the rotating speed of 720r/min for 55min to obtain mixed solution C;
(4) and (3) passing the mixed solution C through a sand mill, wherein the rotation speed of the sand mill is 1200r/min, the time of circular grinding is 30min, adding resin, fluorine modified acrylate LD-1087 and dibutyltin dilaurate drier after the fineness of the mixed solution C is less than or equal to 8um, and stirring to obtain the high-chroma automobile varnish.
Test example 1 test for aging of coating
The test method comprises the following steps: testing is carried out according to the standard specified by GB/T1865 and GB/T1766;
and (4) testing standard: the test criteria are shown in table 2:
TABLE 2 test standards
| Composite grade | Light loss | Color change | Powdering | Cracking of | Exfoliation |
| 0 | 1 | 0 | 0 | 0 | 0 |
| 1 | 2 | 1 | 0 | 1 | 0 |
| 2 | 3 | 2 | 1 | 3(S1) or 2(S2) | 0 |
| 3 | 4 | 3 | 2 | 3(S2) or 2(S3) | 1(S1) |
| 4 | 5 | 4 | 3 | 3(S3) or 2(S4) | 2(S2) |
| 5 | - | 5 | 4 | 3(S4) | 3(S3) |
And (3) testing results: the test results are shown in table 3:
TABLE 3 test results
As can be seen from tables 2 and 3, examples 1-3 still maintained good gloss after 2500 hours of aging, with only slight or no discoloration, and slight degree of chalking, cracking and flaking, and example 3 is the best mode of carrying out the invention, and the automotive varnish prepared in example 3 is the best mode. Comparative example the automotive varnish prepared using other resins was significantly different in each aspect of the effects from the examples.
Test example 2 paint film hardness test
The test method comprises the following steps: GB/T6739
And (3) testing results: the test results are shown in table 4:
TABLE 4 film hardness test results
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Hardness of pencil | H | H | H | HB | HB | 2B |
As is clear from Table 4, the paint films obtained in the examples had the best hardness, the maximum pencil hardness at which the paint film was not scratched was H, the maximum pencil hardness at which the paint films of comparative examples 1 and 2 were not scratched was HB, and the hardness of comparative example 3 was the worst.
Test example 3 specular gloss and Brightness testing of the paint film
The test method comprises the following steps: GB/T9754 and DOI tester
And (3) testing results: the test results are shown in table 5:
TABLE 5 specular gloss test results
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Gloss of | 96.4 | 96.5 | 96.5 | 85.6 | 86.7 | 75.6 |
| DOI | 95.6 | 94.3 | 96.3 | 92.1 | 93.2 | 90.1 |
As can be seen from Table 5, the mirror surface gloss of the paint films obtained in the examples is more than 95, and compared with the comparative example, the gloss of the paint film is remarkably improved, and the brightness of the paint film obtained in the examples is obviously better than that of the comparative example.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The high-chroma automobile varnish is characterized by comprising the following components in parts by weight: 50-60 parts of hydroxyl acrylic resin, 10-20 parts of butyl acetate, 10-20 parts of propylene glycol methyl ether acetate, 5-10 parts of ethylene glycol diacetate, 4-8 parts of PR179CAB color chip, 3-5 parts of dispersant, 0.1-0.5 part of flatting agent and 0.01-0.05 part of drier.
2. The high-chroma automotive varnish of claim 1, comprising the following components in parts by weight: 60 parts of hydroxyl acrylic resin, 11.79 parts of butyl acetate, 10 parts of propylene glycol methyl ether acetate, 5 parts of ethylene glycol diacetate, 8 parts of PR179CAB color chip, 5 parts of dispersing agent, 0.2 part of flatting agent and 0.01 part of drier.
3. The high chroma automotive varnish of claim 1 or 2, wherein the dispersant is at least one of EFKA-4310, BYK-163 and luobutrol 32500, the leveling agent is fluorine modified acrylate LD-1087, and the drier is dibutyltin dilaurate.
4. A method for preparing the high-chroma automotive varnish of any one of claims 1 to 3, comprising the steps of:
(1) uniformly stirring and mixing butyl acetate, propylene glycol methyl ether acetate and ethylene glycol diacetate to obtain a mixed solution A;
(2) adding a dispersing agent into the mixed solution A obtained in the step (1), and stirring to obtain a mixed solution B;
(3) adding PR179CAB color chips into the mixed solution B obtained in the step (2), and stirring to obtain mixed solution C;
(4) and (3) passing the mixed solution C through a sand mill, adding hydroxyl acrylic resin, fluorine modified acrylate LD-1087 and dibutyltin dilaurate drier after the fineness of the mixed solution C is less than or equal to 8um, and stirring to obtain the high-chroma automobile varnish.
5. The method for preparing the high-chroma automotive varnish as claimed in claim 4, wherein in the step (1), the stirring speed is 270-330 r/min.
6. The method for preparing the high-chroma automotive varnish as claimed in claim 4, wherein in the step (2), the stirring rotation speed is 270-330r/min, and the stirring time is 3-5 min.
7. The method for preparing the high-chroma automotive varnish as claimed in claim 4, wherein in the step (3), the stirring speed is 720-880r/min, and the stirring time is 55-65 min.
8. The method for preparing the high-chroma automotive varnish as claimed in claim 4, wherein in the step (4), the rotation speed of the sand mill is 1200-1400r/min, and the time of the cyclic grinding is 30 min.
9. The method for preparing the high-chroma automotive varnish as claimed in claim 4, wherein in the step (4), the stirring speed is 450-550 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011250443.8A CN112280408B (en) | 2020-11-10 | 2020-11-10 | High-chroma automobile varnish and preparation method thereof |
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| CN202011250443.8A CN112280408B (en) | 2020-11-10 | 2020-11-10 | High-chroma automobile varnish and preparation method thereof |
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| CN112280408A true CN112280408A (en) | 2021-01-29 |
| CN112280408B CN112280408B (en) | 2021-12-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0396914A2 (en) * | 1989-04-06 | 1990-11-14 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Coated material |
| JP2003181368A (en) * | 2001-12-13 | 2003-07-02 | Kansai Paint Co Ltd | Method for forming multilayer coating film |
| CN102220084A (en) * | 2010-04-14 | 2011-10-19 | 比亚迪股份有限公司 | Photocureable coating and curing method thereof |
| CN103270119A (en) * | 2010-12-30 | 2013-08-28 | 巴斯夫欧洲公司 | Surface-modified pigment preparations |
| CN103555111A (en) * | 2013-11-25 | 2014-02-05 | 漳州鑫展旺化工有限公司 | High-performance automobile acrylic modified varnish and preparation method thereof |
-
2020
- 2020-11-10 CN CN202011250443.8A patent/CN112280408B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0396914A2 (en) * | 1989-04-06 | 1990-11-14 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Coated material |
| JP2003181368A (en) * | 2001-12-13 | 2003-07-02 | Kansai Paint Co Ltd | Method for forming multilayer coating film |
| CN102220084A (en) * | 2010-04-14 | 2011-10-19 | 比亚迪股份有限公司 | Photocureable coating and curing method thereof |
| CN103270119A (en) * | 2010-12-30 | 2013-08-28 | 巴斯夫欧洲公司 | Surface-modified pigment preparations |
| CN103555111A (en) * | 2013-11-25 | 2014-02-05 | 漳州鑫展旺化工有限公司 | High-performance automobile acrylic modified varnish and preparation method thereof |
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| CN112280408B (en) | 2021-12-14 |
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