CN113714066A - Color-changeable workpiece and preparation method and system thereof - Google Patents

Color-changeable workpiece and preparation method and system thereof Download PDF

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Publication number
CN113714066A
CN113714066A CN202111087807.XA CN202111087807A CN113714066A CN 113714066 A CN113714066 A CN 113714066A CN 202111087807 A CN202111087807 A CN 202111087807A CN 113714066 A CN113714066 A CN 113714066A
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China
Prior art keywords
workpiece
color
layer
paint layer
primer layer
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Pending
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CN202111087807.XA
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Chinese (zh)
Inventor
马来旺
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Mind Electronics Appliance Co Ltd
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Mind Electronics Appliance Co Ltd
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Priority to CN202111087807.XA priority Critical patent/CN113714066A/en
Publication of CN113714066A publication Critical patent/CN113714066A/en
Pending legal-status Critical Current

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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
    • B05D5/066—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 achieved by multilayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • 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
    • B05D3/007—After-treatment
    • 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
    • B05D3/02—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 baking
    • B05D3/0254—After-treatment
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/004—Reflecting paints; Signal paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/32—Radiation-absorbing paints

Abstract

The invention discloses a color-changeable workpiece and a preparation method thereof. The color-changeable workpiece includes: the workpiece comprises a workpiece substrate, a primer layer, a middle paint layer and a finish paint layer. Wherein the primer layer is formed on the surface of the workpiece substrate; the intermediate paint layer is formed on the surface of one side, far away from the workpiece substrate, of the primer layer; the material forming the intermediate paint layer comprises a color-changing paint containing mica; and the finishing coat layer is formed on the surface of the side, far away from the primer layer, of the intermediate paint layer. In the color-changeable work piece, the middle paint layer contains mica which has directivity of light absorption and reflection, thereby showing different colors at different angles. Compared with workpieces processed by the existing painting process with single color, such as aluminum plating, pad printing, hot stamping and the like, the color-changeable workpiece can show colorful colors, and the satisfaction degree of consumers is improved. In addition, the color-changeable workpiece comprises a plurality of paint layers, so that defects on the workpiece substrate can be effectively covered, and the yield of products is improved.

Description

Color-changeable workpiece and preparation method and system thereof
Technical Field
The invention relates to the field of workpiece processing, in particular to a color-changeable workpiece and a preparation method and a system thereof.
Background
The automobile lamp is the eye of the automobile, and along with the continuous improvement of the appreciation level of consumers, the requirements on the color and the shape of the automobile lamp are higher and higher.
In the current automobile lamp industry, the automobile decoration part mark is not only limited to the processes of self-processing and post-processing of the mold (such as aluminum plating, hot stamping, pad printing, silk screen printing and the like). The existing automobile lamp decorating parts are mostly subjected to PVD coating process, and the single color easily causes aesthetic fatigue to consumers. In addition, the decorating part of the existing automobile lamp is a single-color injection molding part, the poor injection molding cannot be covered, the product yield is reduced, the plastic feeling of the injection molding part is strong, and the low quality and the low price are achieved.
In summary, the existing automotive lamp trim still needs to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, it is an object of the invention to propose a color-changeable workpiece and a method for the production thereof. The color of the surface of the color-changeable workpiece can be changed along with the change of the visual angle, thereby showing colorful colors and improving the satisfaction degree of consumers.
In one aspect of the invention, a color-changeable workpiece is provided. According to an embodiment of the invention, the color changeable workpiece comprises: a workpiece substrate; a primer layer formed on a surface of the workpiece substrate; the intermediate paint layer is formed on the surface of one side, far away from the workpiece substrate, of the primer layer; the material forming the middle paint layer comprises a color-changing paint containing mica; and the finishing paint layer is formed on one side surface of the middle paint layer, which is far away from the primer layer.
In the color-changeable workpiece according to the above embodiment of the present invention, the intermediate paint layer contains mica, which has directivity of absorption and reflection of light, thereby being capable of expressing different colors at different angles. Compared with workpieces processed by the existing painting process with single color, such as aluminum plating, pad printing, hot stamping and the like, the color-changeable workpiece can show colorful colors, and the satisfaction degree of consumers is improved. In addition, the color-changeable workpiece comprises a plurality of paint layers, so that defects on the workpiece substrate can be effectively covered, and the yield of products is improved.
In addition, the color-changeable workpiece according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the material forming the primer layer comprises a black primer.
In some embodiments of the invention, the material forming the topcoat layer comprises a transparent topcoat.
In some embodiments of the present invention, the primer layer has a thickness of 10 to 15 μm.
In some embodiments of the present invention, the thickness of the middle paint layer is 8-12 μm.
In some embodiments of the present invention, the thickness of the topcoat layer is 20 to 25 μm.
In some embodiments of the invention, the workpiece substrate is an automotive lamp trim.
In another aspect of the invention, the invention provides a method of making the variable color workpiece of the above embodiment. According to an embodiment of the invention, the method comprises: providing a workpiece substrate; forming a primer layer on the surface of the workpiece substrate; forming a middle paint layer on the surface of one side, away from the workpiece substrate, of the primer layer; and forming a finish paint layer on the surface of one side, far away from the primer layer, of the middle paint layer to obtain the color-changeable workpiece. Therefore, the color of the surface of the color-changeable workpiece prepared by the method can be changed along with the change of the visual angle, so that different colors can be presented at different angles. Meanwhile, the method is simple and easy to implement and is suitable for large-scale production.
In addition, the method for preparing the color-changeable workpiece according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the forming a primer layer on the surface of the workpiece substrate comprises: and spraying a primer on the surface of the workpiece substrate, leveling and baking.
In some embodiments of the present invention, the forming of the intermediate paint layer on the surface of the primer layer on the side away from the workpiece substrate includes: and spraying a color-changing paint containing mica on the surface of one side of the primer layer, which is far away from the workpiece substrate, leveling and baking.
In some embodiments of the present invention, the forming a finishing paint layer on a side surface of the intermediate paint layer away from the primer layer includes: and spraying finish paint on the surface of one side of the middle paint layer, which is far away from the primer layer, leveling and baking.
In some embodiments of the invention, the leveling is performed at 20-30 ℃ for 3-5 min.
In some embodiments of the present invention, the baking is performed at 70-90 ℃ for 5-50 min.
In yet another aspect of the invention, a system for preparing the color-changeable workpiece of the above embodiment is provided. According to an embodiment of the invention, the system comprises: the tool jig is suitable for fixing the workpiece base body; a first spraying device, wherein the first spraying device is suitable for forming a primer layer on the surface of the workpiece substrate; a second spraying device, wherein the second spraying device is suitable for forming a middle paint layer on the surface of the primer layer on the side far away from the workpiece substrate; a third spraying device which is suitable for forming a finishing paint layer on the surface of one side, far away from the primer layer, of the intermediate paint layer. Therefore, after the system can fix the workpiece substrate through the tool fixture, the first spraying device, the second spraying device, the third spraying device and the fourth spraying device are sequentially utilized to form a primer layer, a middle paint layer and a finish paint layer on the surface of the workpiece substrate, and the color of the surface of the prepared color-changeable workpiece can change along with the change of a visual angle, so that different colors can be presented at different angles.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a variable color workpiece according to one embodiment of the invention;
FIG. 2 is a flow chart illustrating a method for preparing a color-changeable workpiece according to an embodiment of the present invention.
Reference numerals:
100-a workpiece substrate;
200-a primer layer;
300-a middle paint layer;
400-finishing paint layer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one aspect of the invention, a color-changeable workpiece is provided. Referring to fig. 1, according to an embodiment of the present invention, the color changeable workpiece includes: a workpiece substrate 100, a primer layer 200, a middle paint layer 300, and a topcoat layer 400. Wherein, the primer layer 200 is formed on the surface of the workpiece substrate 100; the intermediate paint layer 300 is formed on the surface of the primer layer 200 on the side away from the workpiece substrate 100; the material forming the middle paint layer 300 includes a color-changing paint containing mica; the topcoat layer 400 is formed on a surface of the intermediate paint layer 300 remote from the primer layer 200. Therefore, the color of the surface of the color-changeable workpiece can be changed along with the change of the visual angle, thereby showing gorgeous and colorful colors and improving the satisfaction degree of consumers.
The variable color workpiece according to an embodiment of the present invention is further described in detail below.
According to some embodiments of the present invention, the material forming the primer layer 200 includes a black primer. On one hand, the black primer can effectively cover slight defects on the workpiece substrate 100, so that the yield of products is improved; on the other hand, the visual effect of the color-changeable workpiece can be further improved.
According to some embodiments of the present invention, the material forming topcoat layer 400 comprises a transparent topcoat. Therefore, the visual efficiency of the color-changeable workpiece can be further improved.
It should be noted that the specific types of the black primer, the mica-containing color-changing paint, and the transparent top coat are not particularly limited, and conventional materials in the art may be used, for example, the mica-containing color-changing paint may be chameleon paint, and the transparent top coat may be transparent UV top coat paint, etc. In addition, the crude oil of each paint layer material can be compounded with a paint curing agent and a diluent according to actual needs.
According to some embodiments of the present invention, the thickness of the primer layer 200 may be 10 to 15 μm, such as 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, and the like. If the thickness of the primer layer 200 is excessively small, defects such as open bottom or orange peel may occur; if the thickness of the primer layer 200 is excessively large, poor paint deposition may occur.
According to some embodiments of the present invention, the thickness of the middle lacquer layer 300 may be 8-12 μm, such as 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, etc. If the thickness of the intermediate paint layer 300 is excessively small, defects such as color spots or color unevenness may occur; if the thickness of the intermediate paint layer 300 is excessively large, there may occur a problem of paint accumulation or peeling.
According to some embodiments of the present invention, the thickness of the topcoat layer 400 may be 20 to 25 μm, such as 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, 25 μm, and the like. By controlling the thickness of the surface paint layer 400 within the above range, the thickness is larger than that of other paint layers, thereby being further beneficial to embodying the stereoscopic impression and the layering of the middle paint layer 300 and further improving the visual effect of the color-changeable workpiece.
According to some embodiments of the present invention, the primer layer 200, the middle paint layer 300, and the topcoat layer 400 may have a total thickness of 40 to 55 μm. Therefore, the slight poor covering of the composite paint layer on the workpiece substrate 100 can be further facilitated, and the product yield can be improved.
According to some embodiments of the invention, the workpiece substrate may be an automotive lamp trim. Therefore, the composite paint layer with the color change effect is applied to the automobile lamp decorating part, so that the automobile lamp decorating part can show different colors along with the change of visual angles, the automobile lamp is decorated more gorgeously and colorful, the requirements of consumers on colors are met, and the new and new feeling is brought to people. In addition, current car lamps and lanterns decoration base member is mostly injection moulding product, uses its surface through the compound paint layer with above-mentioned effect that discolours, can also cover injection moulding product's defect, improves the product yield.
In another aspect of the invention, the invention provides a method of making the variable color workpiece of the above embodiment. The method of preparing a color-changeable workpiece according to an embodiment of the present invention is further described in detail below.
First, according to an embodiment of the present invention, a workpiece substrate is provided.
According to some embodiments of the invention, the workpiece substrate may be an automotive lamp trim. Therefore, the composite paint layer with the color changing effect is prepared on the surface of the automobile lamp decorating part by the method, so that the automobile lamp decorating part can show different colors along with the change of the visual angle, the defects on the base body of the automobile lamp decorating part can be covered, and the product yield is improved.
Further, according to an embodiment of the present invention, a primer layer is formed on the surface of the workpiece substrate. The specific method of forming the primer layer is not particularly limited, and may be formed, for example, by a method of spraying a primer coating.
According to some embodiments of the invention, before the primer layer is formed, the workpiece substrate and the spraying tool fixture can be assembled, and the region of the workpiece substrate which does not need to be sprayed is shielded according to actual needs. Then, the workpiece substrate is wiped by using superfine fiber dust-free cloth to remove dust and impurities on the surface of the workpiece substrate, and static electricity of the workpiece substrate is removed through electrostatic dust removal to prevent the workpiece substrate from adsorbing dust to cause defects.
Further, according to the embodiment of the present invention, the intermediate paint layer is formed on the surface of the primer layer on the side away from the workpiece substrate. The specific method of forming the intermediate coat layer is not particularly limited, and may be formed by, for example, spraying an intermediate coat paint. In particular, the midcoat paint includes a color-changing paint containing mica, which is directional in the absorption and reflection of light, so that it can take on different colors at different angles.
Further, according to the embodiment of the invention, a finishing paint layer is formed on the surface of the side, away from the primer layer, of the intermediate paint layer, so that the color-changeable workpiece is obtained. The specific method of forming the top coat layer is not particularly limited, and may be formed by, for example, spraying a top coat paint.
According to some embodiments of the present invention, in the steps of forming the primer layer, the middle paint layer and the top paint layer, after spraying each paint layer, leveling and baking the coating layer are further included. This can further improve the properties of the respective paint layers, such as flatness and curability.
According to some embodiments of the invention, the leveling may be performed at 20-30 ℃ for 3-5 min. Specifically, the leveling temperature can be 20 ℃, 25 ℃, 30 ℃ and the like, and the leveling time can be 3min, 4min, 5min and the like. Thereby, the flatness of the paint layer can be further improved.
According to some embodiments of the present invention, the baking may be performed at 70-90 ℃ for 5-50 min. Specifically, the baking temperature can be 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃ and the like, and the baking time can be 5min, 10min, 15min, 20min, 25min, 30min, 35min, 40min, 45min, 50min and the like. Thereby, the degree of curing of the paint layer can be further improved. Preferably, the baking time of the surface paint layer is 5-10 min, the baking time of the middle paint layer is 8-15 min, and the baking time of the surface paint layer is 40-50 min.
In addition, it should be noted that all the features and advantages described above for the color-changeable workpiece are also applicable to the method for preparing the color-changeable workpiece, and are not described in detail herein.
In yet another aspect of the invention, a system for preparing the color-changeable workpiece of the above embodiment is provided. According to an embodiment of the invention, the system comprises: frock tool, first spraying device, second spraying device and third spraying device. The tool jig is suitable for fixing a workpiece substrate; the first spraying device is suitable for forming a primer layer on the surface of the workpiece substrate; the second spraying device is suitable for forming a middle paint layer on the surface of one side, far away from the workpiece substrate, of the primer layer; the third spraying means is adapted to form a topcoat layer on a surface of the intermediate paint layer on a side remote from the primer layer. Therefore, after the system can fix the workpiece substrate through the tool fixture, the first spraying device, the second spraying device, the third spraying device and the fourth spraying device are sequentially utilized to form a primer layer, a middle paint layer and a finish paint layer on the surface of the workpiece substrate, and the color of the surface of the prepared color-changeable workpiece can change along with the change of a visual angle, so that different colors can be presented at different angles.
According to some embodiments of the present invention, the first spraying device, the second spraying device, and the third spraying device include spray guns, and the calibers of the spray guns in the spraying devices are 1 to 1.3mm, respectively and independently. This can further improve the properties such as the flatness of each paint layer.
In addition, it should be noted that all the features and advantages described above for the color-changeable workpiece are also applicable to the system for preparing the color-changeable workpiece, and are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Examples
Referring to fig. 2, a variable color automotive lamp trim was prepared as follows.
(1) The automobile lamp decoration part base body is assembled with a tooling fixture (PC + 10% GF material), and the tooling fixture is utilized to fix the base body and shield the area which does not need to be sprayed on the base body.
(2) The workpiece substrate is wiped by using the superfine fiber dust-free cloth to remove dust and impurities on the surface of the workpiece substrate, and the static electricity of the workpiece substrate is removed by electrostatic dust removal to prevent the workpiece substrate from adsorbing dust to cause defects.
(3) Uniformly spraying black primer (paint is mixed with a curing agent and a diluent and then stirred for 20min and uniformly mixed) by using a manipulator or a fixed gun (the caliber is 1-1.3 mm), wherein the thickness of the sprayed film is 10-15 mu m, leveling the sprayed film at normal temperature for 3-5 min, and then baking the sprayed film at 80 ℃ for 5-10 min.
(4) Uniformly spraying the color-changing intermediate coat (the paint is mixed with a curing agent and a diluent and then stirred for 20min and uniformly mixed) by using a manipulator or a fixed gun (the caliber is 1-1.3 mm), wherein the thickness of the sprayed film is 8-12 mu m, leveling the sprayed film at normal temperature for 3-5 min, and then baking the sprayed film for 8-15 min at 80 ℃. In the step, attention should be paid to that the spraying amount of the paint is not too large, and technological parameters such as speed, distance, atomization, film thickness and the like are kept consistent during spraying, so that the phenomena of uneven color depth, blooming and the like of a paint layer obtained by spraying are avoided.
(5) Uniformly spraying a transparent surface (the paint is mixed with a curing agent and a diluent and then stirred for 20min and uniformly mixed) by using a manipulator or a fixed gun (the caliber is 1-1.3 mm), wherein the thickness of the sprayed film is 20-25 mu m, leveling the sprayed film at normal temperature for 3-5 min, and then baking the sprayed film for 45min at 80 ℃.
(6) And (5) inspecting according to the inspection standard, and packaging and warehousing the qualified products.
The specific recipe parameters for the formation of the paint layer involved in the above steps are shown in table 1.
TABLE 1
Figure BDA0003266435400000071
Therefore, the prepared automobile decoration part can show color changes with different metal textures at viewing angles of 15 degrees, 45 degrees and 115 degrees, and shows gorgeous and colorful colors.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A color changeable workpiece, comprising:
a workpiece substrate;
a primer layer formed on a surface of the workpiece substrate;
the intermediate paint layer is formed on the surface of one side, far away from the workpiece substrate, of the primer layer; the material forming the middle paint layer comprises a color-changing paint containing mica;
and the finishing paint layer is formed on the surface of one side, far away from the primer layer, of the intermediate paint layer.
2. A variable color workpiece according to claim 1 wherein the material forming the primer layer comprises a black primer; and/or the presence of a gas in the gas,
the material forming the top coat layer comprises a transparent top coat.
3. A color-changeable workpiece according to claim 1, wherein the primer layer has a thickness of 10 to 15 μm.
4. A variable color workpiece according to claim 1, characterised in that the thickness of the intermediate paint layer is 8 to 12 μm.
5. A variable color workpiece according to claim 1, characterised in that the thickness of the topcoat layer is 20 to 25 μm.
6. A color-changeable workpiece according to any one of claims 1 to 5, wherein the workpiece substrate is an automotive lamp trim.
7. A method for preparing a color-changeable workpiece according to any one of claims 1 to 6, comprising:
providing a workpiece substrate;
forming a primer layer on the surface of the workpiece substrate;
forming a middle paint layer on the surface of one side, away from the workpiece substrate, of the primer layer;
and forming a finish paint layer on the surface of one side, far away from the primer layer, of the middle paint layer to obtain the color-changeable workpiece.
8. The method of claim 7, wherein the forming a primer layer on the surface of the workpiece substrate comprises: spraying a primer on the surface of the workpiece substrate, leveling and baking; and/or the presence of a gas in the gas,
the forming of the intermediate paint layer on the surface of the primer layer on the side far away from the workpiece substrate comprises the following steps: spraying a color-changing paint containing mica on the surface of one side of the primer layer, which is far away from the workpiece substrate, leveling and baking; and/or the presence of a gas in the gas,
the forming of the finishing paint layer on the surface of one side, far away from the primer layer, of the intermediate paint layer comprises the following steps: and spraying finish paint on the surface of one side of the middle paint layer, which is far away from the primer layer, leveling and baking.
9. The method according to claim 8, wherein the leveling is performed at 20-30 ℃ for 3-5 min; and/or the presence of a gas in the gas,
the baking is carried out for 5-50 min at 70-90 ℃.
10. A system for preparing a color-changeable workpiece according to any one of claims 1 to 6, comprising:
the tool jig is suitable for fixing the workpiece base body;
a first spraying device, wherein the first spraying device is suitable for forming a primer layer on the surface of the workpiece substrate;
a second spraying device, wherein the second spraying device is suitable for forming a middle paint layer on the surface of the primer layer on the side far away from the workpiece substrate;
a third spraying device which is suitable for forming a finishing paint layer on the surface of one side, far away from the primer layer, of the intermediate paint layer.
CN202111087807.XA 2021-09-16 2021-09-16 Color-changeable workpiece and preparation method and system thereof Pending CN113714066A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388932A2 (en) * 1989-03-22 1990-09-26 BASF Corporation Coating system exhibiting color travel and opalescent color effects
JP2001179170A (en) * 1999-12-28 2001-07-03 Nippon Paint Co Ltd Photoluminescent pattern coating film forming method and coated product
US6291018B1 (en) * 1999-11-15 2001-09-18 Ppg Industries Ohio, Inc. Method for applying a composite coating having a polychromatic effect onto a substrate
KR20020084434A (en) * 2001-05-02 2002-11-09 현대자동차주식회사 Bumper and Method of coating white pearl for a bumper of an automobile
CN111974657A (en) * 2020-08-25 2020-11-24 苏州欧普照明有限公司 Preparation method of colorful coating, colorful coating and lamp fitting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388932A2 (en) * 1989-03-22 1990-09-26 BASF Corporation Coating system exhibiting color travel and opalescent color effects
US6291018B1 (en) * 1999-11-15 2001-09-18 Ppg Industries Ohio, Inc. Method for applying a composite coating having a polychromatic effect onto a substrate
JP2001179170A (en) * 1999-12-28 2001-07-03 Nippon Paint Co Ltd Photoluminescent pattern coating film forming method and coated product
KR20020084434A (en) * 2001-05-02 2002-11-09 현대자동차주식회사 Bumper and Method of coating white pearl for a bumper of an automobile
CN111974657A (en) * 2020-08-25 2020-11-24 苏州欧普照明有限公司 Preparation method of colorful coating, colorful coating and lamp fitting

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