CN110860446A - Method for realizing local color change or special pattern of automobile paint spraying - Google Patents
Method for realizing local color change or special pattern of automobile paint spraying Download PDFInfo
- Publication number
- CN110860446A CN110860446A CN201910717447.3A CN201910717447A CN110860446A CN 110860446 A CN110860446 A CN 110860446A CN 201910717447 A CN201910717447 A CN 201910717447A CN 110860446 A CN110860446 A CN 110860446A
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- magnetic field
- paint
- applying
- magnetic
- color change
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
- B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a method for realizing local color change or special patterns of automobile spray paint, which comprises the following steps: coating the color paint containing the magnetic particles on the surface of an object to be coated; and applying a magnetic field to the coated object in the state that the colored paint is not dried, thereby realizing local color change or special pattern effect. The method realizes the local color change or special pattern effect of the automobile, and provides a completely new and easily realized solution for the visual optimization of the appearance and the contour of the automobile.
Description
Technical Field
The invention belongs to the field of automobile paint, relates to an automobile paint color changing method, and particularly relates to a method for realizing local color change or special patterns of automobile spray paint.
Background
For a long time, the automobile paint spraying technology is continuously developed, and different color development effects are realized by adding various particles into the automobile paint. However, none of the methods can achieve the effect of controllable local color change or special pattern after the paint is uniformly sprayed.
CN 103387783A discloses a fluorine atom modified automobile water-based base coat, which comprises: 43-78 parts by weight of a fluorine atom-modified water-based acrylate resin; 0.8-2.2 parts by weight of water-based dispersing agent, 12-25 parts by weight of deionized water, 1.3-4.5 parts by weight of water-based defoaming agent and 23-38 pigments: titanium dioxide, mica pearl powder, carbon black or water-based aluminum powder, 18-42 parts by weight of water-based curing agent, 0.5-0.8 part by weight of water-based rheological additive and 1.1-1.5 parts by weight of water-based wetting agent. The water-based polyacrylate resin containing fluorine atom groups in the main chain is prepared by free radical copolymerization of a fluorine-containing acrylic monomer, an acrylic monomer containing unsaturated double bonds, styrene and a functional acrylic monomer, and finally, the fluorine atom-modified water-based polyacrylate is obtained by neutralization of a neutralizer. Although the color paint has good light and color retention, the color paint cannot realize color change and special patterns.
CN 103497656A discloses an automobile natural color finish paint and a preparation method thereof, wherein the automobile natural color finish paint comprises the following components in parts by weight: 20-30 parts of isophthalic acid modified high-hardness alkyd resin, 15-20 parts of isophthalic acid and neopentyl glycol modified high-hardness polyester resin with high hydroxyl content, 1.5-4.0 parts of methyl butyl mixed etherified amino resin, 12-15 parts of butylated amino resin, 0.5-1.0 part of pigment dispersing agent, 22-24 parts of titanium pigment, 0.2-0.4 part of flatting agent, 0.2-0.4 part of defoaming agent, 0.5-0.6 part of acid catalyst, 0.5-0.6 part of light stabilizer and 2-5 parts of aliphatic mixed solvent. Although the technical scheme can enable the product to have the quality characteristics of high appearance, high hardness and high chemical resistance, the color change and the drawing of special patterns cannot be realized in the coating process.
CN 104629605A discloses a single-component water-based metal flashing paint for automobiles, which contains solvent-free anionic/nonionic polyurethane-acrylate graft copolymer (PUA) with Interpenetrating Polymer Network (IPN) structure, and a preparation method thereof. The invention relates to an aqueous metallic flashing paint, which belongs to one of automobile base paints and mainly comprises solvent-free anionic/nonionic PUA with an IPN structure, aluminum powder slurry, an auxiliary agent, a cosolvent, deionized water and an amine neutralizer. Although the colored paint prepared by the technical scheme has excellent physical and mechanical properties, water resistance, chemical resistance and weather resistance, the color change and the drawing of special patterns cannot be realized in the coating process.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for realizing local color change or special patterns of automobile paint spraying, which realizes the local color change or special pattern effect of an automobile and provides a completely new and easily realized solution for the visual optimization of the appearance and the contour of the automobile.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for realizing local color change or special patterns of automobile spray paint, which comprises the following steps:
coating the color paint containing the magnetic particles on the surface of an object to be coated;
and applying a magnetic field to the coated object in the state that the colored paint is not dried, thereby realizing local color change or special pattern effect.
In a preferred embodiment of the present invention, the magnetic particles in the paint containing magnetic particles account for 10 to 25% of the total mass of the paint, such as 12%, 15%, 18%, 20%, 22%, or 24%, but not limited to the values listed above, and other values not listed above within the range of values are also applicable.
In a preferred embodiment of the present invention, the particle size of the magnetic particles in the magnetic particle-containing paint is 0.01 to 10 μm, such as 0.05 μm, 0.1 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, or 9 μm, but is not limited to the values listed above, and other values not listed above within the range of values are also applicable.
In a preferred embodiment of the present invention, the coating method is spraying.
In a preferred embodiment of the present invention, the magnetic field strength of the magnetic field is proportional to the average particle size of the magnetic particles and the viscosity of the fluid containing the paint containing the magnetic particles.
Wherein the strength of the magnetic field can be controlled by the linear distance of the carrier tool applying the magnetic field from the coating surface.
As a preferred technical solution of the present invention, the magnetic field is applied when the local color change is realized by applying the magnetic field to the local area to be color-changed, and the magnetic field is withdrawn after the color change is completed and stabilized.
Wherein, whether the local color change is finished or not can be determined by a colorimeter or by comparing a color comparison card with a target color.
As a preferable technical scheme of the invention, the application time of the magnetic field is the time from the time when a paint film is formed and not dried until the time when the color change is finished and stable.
In the invention, the principle of realizing local color change by applying a magnetic field to undried colored paint containing magnetic particles is that a stable magnetic field generates acting force on the magnetic particles in a certain range in a paint film, and the magnetic particles are displaced along the direction of the magnetic field under the action of magnetic force. The displaced magnetic particles show local color change effect under the light reflection effect.
As a preferred technical scheme of the invention, when the special pattern is realized, the magnetic field is applied to the surface of the paint film in a mode of moving along a pattern path.
As a preferable technical scheme of the invention, the application time of the magnetic field is the time for forming the paint film and not drying until the formed special pattern is finished and stable.
In the invention, the principle of realizing the special pattern by applying a magnetic field to the undried colored paint containing the magnetic particles is that the moving magnetic field generates acting force on the magnetic particles in a certain range in the paint film, and the magnetic particles are displaced according to the direction of the magnetic field under the action of magnetic force. Because the movement of the magnetic field needs time, when the magnetic particles shift, the paint film has different shifting degrees due to inconsistent drying fluidity and different linear strength color changing effect under the light reflecting effect, and special pattern styles can be realized.
As the preferable technical scheme of the invention, the method for realizing the local color change or special patterns of the automobile paint comprises the following steps of;
spraying paint containing 10-25% of magnetic particles with the particle size of 0.01-10 mu m on the surface of a coated object;
applying a magnetic field to the coated object in a state that the colored paint is not dried, applying the magnetic field to the part needing to be discolored, and removing the magnetic field after the discoloration is finished and the magnetic field is stabilized to realize the local discoloration;
and applying a magnetic field to the coated object in a state that the colored paint is not dried, applying the magnetic field to the surface of the paint film, and moving the magnetic field along the pattern path until the formed special pattern is finished and stable to realize the special pattern.
The invention adds two modules on the traditional automobile paint spraying process, wherein the newly added module is that in the step of preparing colored paint, special automobile paint containing magnetic particles is needed to be prepared, and the automobile paint containing magnetic particles can be purchased in the market or prepared by using magnetic particles, additives and common automobile paint. And a second newly added module is used for interfering by using a controllable magnetic field when the paint is not dried, and the magnetic particles are subjected to displacement under the magnetic field interference so as to realize local color change or special patterns. In the traditional spraying process of the automobile paint, the steps of gluing and intermediate coating before the preparation of the colored paint, and the steps of flash drying, varnish, baking, inspection and the like after magnetic field interference are all conventional processes.
Compared with the prior art, the invention at least has the following beneficial effects:
the invention provides a method for realizing local color change or special patterns of automobile paint spraying, which realizes the local color change or special pattern effect of an automobile and provides a completely novel and easily realized solution for visual optimization of the appearance and the contour of the automobile.
Drawings
FIG. 1 is a schematic flow chart of a conventional automobile paint spraying process for realizing local color change or special patterns of automobile paint spraying by the method of the invention;
FIG. 2 is a diagram showing the effect of the present invention in achieving a local color change in automobile paint;
fig. 3 is a diagram of the effect of the invention on realizing special pattern of automobile painting.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:
in the specific embodiment of the invention, the magnetic particles added in the colored paint are ferroferric oxide particles with smooth surfaces, the particle size of the magnetic particles is the average particle size of the magnetic particles, and the colored paint is coated on the surface of the aluminum plate.
Example 1
The embodiment provides a method for realizing local color change of automobile spray paint, which comprises the following steps:
after the traditional process of gluing and intermediate coating, spraying paint containing 10-25% of magnetic particles with the particle size of 0.01-10 mu m on the surface of a coated object;
and applying a magnetic field to the coated object in the state that the colored paint is not dried, applying the magnetic field to the part needing to be discolored, and removing the magnetic field after the discoloration is finished and stabilized to realize the local discoloration.
In this example, the paints 1 to 4 were discolored by a magnetic field, and the data of the content of magnetic particles, the particle size, the magnetic induction intensity of the applied magnetic field, the primary color, and the discolored color in each group of paints are shown in table 1, and the results are shown in fig. 2 (paints 1 to 4 are sequentially arranged from left to right).
TABLE 1
After the magnetic field is removed, the conventional processes of flash drying, varnish and baking are carried out, and as can be seen from fig. 2, after the magnetic field interference, the colored paints 1 to 4 all realize controllable local color change.
Example 2
After the traditional process of gluing and intermediate coating, spraying paint containing 10-25% of magnetic particles with the particle size of 0.01-10 mu m on the surface of a coated object;
and applying a magnetic field to the coated object in a state that the colored paint is not dried, applying the magnetic field to the surface of the paint film, and moving the magnetic field along the pattern path until the formed special pattern is finished and stable to realize the special pattern.
In this embodiment, special patterns are added to the paints 5 to 8 through the magnetic field, and the content and the particle size of the magnetic particles in each group of paints, the magnetic induction intensity of the applied magnetic field, and the primary color data are shown in table 2, and the results are shown in fig. 3 (paints 5 to 8 are sequentially from left to right).
TABLE 2
After the magnetic field is removed, the conventional processes of flash drying, varnish and baking are carried out, and after the magnetic field interference, the pattern shown in figure 3 appears on the surface of the experimental plate, so that the drawing of the special pattern is realized.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A method for realizing local color change or special patterns of automobile paint spraying is characterized by comprising the following steps:
coating the color paint containing the magnetic particles on the surface of an object to be coated;
and applying a magnetic field to the coated object in the state that the colored paint is not dried, thereby realizing local color change or special pattern effect.
2. The method according to claim 1, wherein the magnetic particles in the paint containing the magnetic particles account for 10-25% of the total mass of the paint.
3. The method according to claim 1 or 2, wherein the average particle size of the magnetic particles in the magnetic particle-containing paint is 0.01 to 10 μm.
4. A method according to any of claims 1-3, characterized in that the method of coating is spray coating.
5. The method according to any one of claims 1 to 4, wherein the magnetic field strength of the magnetic field is proportional to the average particle size of the magnetic particles and the viscosity of the fluid containing the paint containing the magnetic particles.
6. The method according to any one of claims 1 to 5, wherein the magnetic field is applied to the part to be discolored by applying the magnetic field to the part to be discolored, and the magnetic field is withdrawn after the discoloration is completed and stabilized.
7. The method according to claim 6, wherein the magnetic field is applied for a time period from when the paint film is formed and not dried until the discoloration is complete and stable.
8. A method according to any one of claims 1 to 5, characterized in that the magnetic field is applied in such a way that a special pattern is realized by applying a magnetic field to the surface of the paint film, which magnetic field moves along the pattern path.
9. The method according to claim 8, wherein the magnetic field is applied for a time period from the formation of the paint film and not until the formation of the specific pattern is completed and stabilized.
10. The method according to any one of claims 1 to 9, characterized in that it comprises;
spraying paint containing 10-25% of magnetic particles with the particle size of 0.01-10 mu m on the surface of a coated object;
applying a magnetic field to the coated object in a state that the colored paint is not dried, applying the magnetic field to the part needing to be discolored, and removing the magnetic field after the discoloration is finished and the magnetic field is stabilized to realize the local discoloration;
and applying a magnetic field to the coated object in a state that the colored paint is not dried, applying the magnetic field to the surface of the paint film, and moving the magnetic field along the pattern path until the formed special pattern is finished and stable to realize the special pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717447.3A CN110860446A (en) | 2019-08-05 | 2019-08-05 | Method for realizing local color change or special pattern of automobile paint spraying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717447.3A CN110860446A (en) | 2019-08-05 | 2019-08-05 | Method for realizing local color change or special pattern of automobile paint spraying |
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| CN110860446A true CN110860446A (en) | 2020-03-06 |
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| CN201910717447.3A Pending CN110860446A (en) | 2019-08-05 | 2019-08-05 | Method for realizing local color change or special pattern of automobile paint spraying |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394939A (en) * | 2006-03-21 | 2009-03-25 | 阿克佐诺贝尔国际涂料股份有限公司 | Method of applying a pattern to a substrate |
| CN101827900A (en) * | 2007-09-26 | 2010-09-08 | 井上株式会社 | Pattern forming paint and method of forming pattern |
-
2019
- 2019-08-05 CN CN201910717447.3A patent/CN110860446A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394939A (en) * | 2006-03-21 | 2009-03-25 | 阿克佐诺贝尔国际涂料股份有限公司 | Method of applying a pattern to a substrate |
| CN101827900A (en) * | 2007-09-26 | 2010-09-08 | 井上株式会社 | Pattern forming paint and method of forming pattern |
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