A coating method for night light button gradual color change

Abstract

The present application relates to the technical field of coating of luminous button, and discloses a coating method for luminous button with gradual color change, comprising the following steps: S1, positioning of button; S2, spraying of pigment; S3, spraying of reflective powder; S4, polishing; according to the present application, the pigment with uniformly doped fluorescent powder is first sprayed, and then the glue layer with different doped reflective powder is sprayed, so that the luminous button with gradual color change is formed; when there is light, the gradual color change from high doped amount to low doped amount changes from light to dark; at night, the gradual color change from high doped amount to low doped amount changes from dark to light due to the effect of fluorescent powder, and the different gradual color change is presented, so that more rich color change is generated, the practicality of the luminous button is increased, and the color change does not need to be controlled, but only a single ordinary pigment is needed, and the process is simple, so that the present application is conducive to popularization and use.

Description

Technical Field

[0001] This invention relates to the field of luminous button coating technology, and more particularly to a method for coating luminous buttons with gradient colors. Background Technology

[0002] Glow-in-the-dark buttons are buttons that display a faint green fluorescence in low light (no light). During production, fluorescent powder is usually incorporated into the material to achieve the glow-in-the-dark effect.

[0003] Currently, two methods are used to achieve gradient color effects when spraying pigments onto glow-in-the-dark buttons:

[0004] 1. Use gradient pigments directly;

[0005] 2. Apply multiple coats of pigment or apply various progressive pigments at intervals.

[0006] Of the methods described above, the first method uses expensive gradient pigments, which increases the cost of use and makes it inconvenient to control the color of the gradient. The second method involves multiple spraying processes, which complicates the process and delays the production cycle. Summary of the Invention

[0007] In view of the problems existing in the above-mentioned method for coating gradient colors on luminous buttons, the present invention is proposed.

[0008] Therefore, to solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for coating a luminous button with a gradient color, comprising the following steps:

[0009] S1. Button positioning: Fix the glow-in-the-dark button at the spraying position;

[0010] S2. Spraying pigment: Spray a uniform amount of pigment mixed with fluorescent powder onto the surface of the positioned glow-in-the-dark button. The amount of fluorescent powder mixed in the pigment is 20-50V / V%.

[0011] S3. Spraying reflective powder: After spraying the pigment, spray a layer of adhesive mixed with reflective powder onto the surface of the glow-in-the-dark button. The amount of reflective powder mixed in the adhesive layer varies in a gradient range of 0-80V / V% in different areas of the glow-in-the-dark button surface. Then, let the glow-in-the-dark button dry.

[0012] S4. Polishing: Polish the surface of the coated glow-in-the-dark buttons, then clean and dry them.

[0013] As a preferred embodiment of the gradient color coating method for a luminous button according to the present invention, in step S2, the fluorescent powder is made of an alkaline earth aluminate type long afterglow luminescent material, the main component of which is strontium aluminate, and the molecular structural formula is (SrO)·(MgO)0.1·Al2O3(EuO,Dy2O3)0.01B.

[0014] As a preferred embodiment of the method for coating a gradient color on a luminous button according to the present invention, wherein: in step S2, the doping amount of the phosphor in the pigment is 50V / V%.

[0015] As a preferred embodiment of the gradient color coating method for a luminous button according to the present invention, in step S3, the reflective powder comprises 50-60 parts SiO2, 10-15 parts CaO, 8-12 parts Na2O, 1-2 parts TiO2 and 2-4 parts BaO.

[0016] As a preferred embodiment of the gradient color coating method for a luminous button according to the present invention, in step S3, the refractive index ND of the reflective powder is ≥1.93.

[0017] As a preferred embodiment of the method for coating a luminous button with gradient color according to the present invention, in step S3, the adhesive layer comprises 10-20 parts of epoxy resin, 2-5 parts of polyimide and 10-20 parts of water.

[0018] In a preferred embodiment of the gradient color coating method for a luminous button according to the present invention, wherein: in step S3, the formula for calculating the gradient g is:

[0019] Where f is the maximum doping amount and n is the number of regions.

[0020] The beneficial effects of this invention are as follows: By first spraying a pigment uniformly doped with fluorescent powder, and then spraying an adhesive layer with different amounts of reflective powder, a luminous button with gradient colors is formed. In the presence of light, due to the different amounts of reflective powder, the gradient color changes from light to dark from high to low doping. In the dark, due to the effect of the fluorescent powder, the gradient color changes from dark to light from high to low doping. The different gradient colors produce richer color changes, increasing the practicality of the luminous button. The color change does not require control and only requires a single common pigment. Furthermore, the process is simple and conducive to widespread use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0022] Figure 1 This is a schematic diagram of the process structure of a gradient color coating method for a luminous button according to the present invention. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0025] Please refer to Figure 1 For ease of comparison, the following examples and comparative examples all have 4 regions, the pigment is dark red, and the fluorescent powder color is white.

[0026] Example 1: A method for coating a glow-in-the-dark button with a gradient color, comprising the following steps:

[0027] S1. Button positioning: Fix the glow-in-the-dark button at the spraying position;

[0028] S2. Spraying Pigment: Spray a uniform amount of phosphor-doped pigment onto the positioned luminous button surface. The phosphor doping amount in the pigment is 20V / V%. The phosphor is made of alkaline earth aluminate type long afterglow luminescent material, with strontium aluminate as the main component. The molecular structure is (SrO)·(MgO)0.1·Al2O3(EuO,Dy2O3)0.01B. This phosphor has a short light absorption time. It can absorb light for 5-20 minutes under sunlight or lamp light, and then convert the absorbed light energy into light energy and store it in the crystal lattice. In the dark, it can convert the energy into light energy and emit light. It can effectively emit light continuously (luminous brightness greater than 10mcd / m2) for 8-10 hours.

[0029] S3. Spraying reflective powder: The reflective powder consists of 50 parts SiO2, 10 parts CaO, 8 parts Na2O, 1 part TiO2, and 2 parts BaO, with a refractive index ND≥1.93. After spraying the pigment, a layer of adhesive mixed with reflective powder is sprayed onto the surface of the glow-in-the-dark button. The adhesive layer consists of 10 parts epoxy resin, 5 parts polyimide, and 10 parts water. This adhesive is transparent and easy to add reflective powder to. Furthermore, the amount of reflective powder mixed in the adhesive layer varies in a gradient within the range of 0-80V / V% in different areas of the glow-in-the-dark button surface. The formula for calculating the gradient g is:

[0030] Where f is the maximum doping amount, and n is the number of regions, where f is 80V / V%, and n is 4. The reflective powder was added to the glow-in-the-dark buttons at different concentrations of 20V / V%, 40V / V%, 60V / V%, and 80V / V, respectively, and then the glow-in-the-dark buttons were dried.

[0031] S4. Polishing: Polish the surface of the coated glow-in-the-dark buttons, then clean and dry them.

[0032] Example 2: A method for coating a luminous button with a gradient color, comprising the following steps:

[0033] S1. Button positioning: Fix the glow-in-the-dark button at the spraying position;

[0034] S2. Spraying Pigment: Spray a uniform amount of phosphor-doped pigment onto the positioned glow-in-the-dark button surface. The phosphor doping amount in the pigment is 30V / V%. The phosphor is made of alkaline earth aluminate type long afterglow luminescent material, with strontium aluminate as the main component. The molecular structure is (SrO)·(MgO)0.1·Al2O3(EuO,Dy2O3)0.01B. This phosphor has a short light absorption time. It can absorb light for 5-20 minutes under sunlight or lamplight, and then convert the absorbed light energy into light energy and store it in the crystal lattice. In the dark, it can convert the energy into light energy and emit light. It can effectively emit light continuously (luminous brightness greater than 10mcd / m2) for 8-10 hours.

[0035] S3. Spraying reflective powder: The reflective powder consists of 55 parts SiO2, 13 parts CaO, 10 parts Na2O, 1.5 parts TiO2, and 3 parts BaO, with a refractive index ND≥1.93. After spraying the pigment, a layer of adhesive mixed with reflective powder is sprayed onto the surface of the glow-in-the-dark button. The adhesive layer consists of 15 parts epoxy resin, 4 parts polyimide, and 15 parts water. This adhesive is transparent and easy to add reflective powder to. Furthermore, the amount of reflective powder mixed in the adhesive layer varies in a gradient within the range of 0-80V / V% in different areas of the glow-in-the-dark button surface. The formula for calculating the gradient g is:

[0036] Where f is the maximum doping amount, and n is the number of regions, where f is 80V / V%, and n is 4. The reflective powder was added to the glow-in-the-dark buttons at different concentrations of 20V / V%, 40V / V%, 60V / V%, and 80V / V, respectively, and then the glow-in-the-dark buttons were dried.

[0037] S4. Polishing: Polish the surface of the coated glow-in-the-dark buttons, then clean and dry them.

[0038] Example 3: A method for coating a luminous button with a gradient color, comprising the following steps:

[0039] S1. Button positioning: Fix the glow-in-the-dark button at the spraying position;

[0040] S2. Spraying Pigment: Spray a uniform amount of phosphor-doped pigment onto the positioned luminous button surface. The phosphor doping amount in the pigment is 50V / V%. The phosphor is made of alkaline earth aluminate type long afterglow luminescent material, with strontium aluminate as the main component. The molecular structure is (SrO)·(MgO)0.1·Al2O3(EuO,Dy2O3)0.01B. This phosphor has a short light absorption time. It can absorb light for 5-20 minutes under sunlight or lamp light, and then convert the absorbed light energy into light energy and store it in the crystal lattice. In the dark, it can convert the energy into light energy and emit light. It can effectively emit light continuously (luminous brightness greater than 10mcd / m2) for 8-10 hours.

[0041] S3. Spraying reflective powder: The reflective powder consists of 60 parts SiO2, 15 parts CaO, 12 parts Na2O, 2 parts TiO2, and 4 parts BaO, with a refractive index ND≥1.93. After spraying the pigment, a layer of adhesive mixed with reflective powder is sprayed onto the surface of the glow-in-the-dark button. The adhesive layer consists of 20 parts epoxy resin, 2 parts polyimide, and 20 parts water. This adhesive is transparent and easy to add reflective powder to. Furthermore, the amount of reflective powder mixed in the adhesive layer varies in a gradient within the range of 0-80V / V% in different areas of the glow-in-the-dark button surface. The formula for calculating the gradient g is:

[0042] Where f is the maximum doping amount, and n is the number of regions, where f is 80V / V%, and n is 4. The reflective powder was added to the glow-in-the-dark buttons at different concentrations of 20V / V%, 40V / V%, 60V / V%, and 80V / V, respectively, and then the glow-in-the-dark buttons were dried.

[0043] S4. Polishing: Polish the surface of the coated glow-in-the-dark buttons, then clean and dry them.

[0044] Comparative example: A method for applying gradient colors to a glow-in-the-dark button, comprising the following steps:

[0045] S1. Button positioning: Fix the glow-in-the-dark button at the spraying position;

[0046] S2. Spraying Pigment: Spray a uniform amount of phosphor-doped pigment onto the positioned luminous button surface. The phosphor doping amount in the pigment is 50V / V%. The phosphor is made of alkaline earth aluminate type long afterglow luminescent material, with strontium aluminate as the main component. The molecular structure is (SrO)·(MgO)0.1·Al2O3(EuO,Dy2O3)0.01B. This phosphor has a short light absorption time. It can absorb light for 5-20 minutes under sunlight or lamp light, and then convert the absorbed light energy into light energy and store it in the crystal lattice. In the dark, it can convert the energy into light energy and emit light. It can effectively emit light continuously (luminous brightness greater than 10mcd / m2) for 8-10 hours.

[0047] S3. Spraying adhesive: Spray a layer of adhesive onto the surface of the glow-in-the-dark button. The adhesive layer consists of 20 parts epoxy resin, 2 parts polyimide and 20 parts water. Then let the glow-in-the-dark button dry.

[0048] S4. Polishing: Polish the surface of the coated glow-in-the-dark buttons, then clean and dry them.

[0049] The luminous button samples prepared by coating in Examples 1-3 and the comparative example were selected. On a sunny day, each sample was placed in the same area directly exposed to sunlight for a light exposure test from 9:00 AM to 4:00 PM. The color of different areas on each sample was observed under the light at 2:00 PM. After the light exposure, all samples were transferred to a darkroom and the color of different areas on each sample was observed again in darkness. The observation results are summarized in Tables 1 and 2 below:

[0050] Table 1: Color under Daylight Illumination

[0051]

[0052] Table 2: Color Situation in Dark Night Environment

[0053]

[0054] As shown in Tables 1 and 2, by first spraying a pigment uniformly mixed with fluorescent powder, and then spraying an adhesive layer with different amounts of reflective powder, a luminous button with gradient colors is formed. During the day, due to the effect of the reflective powder, the light is brighter and the color appears lighter in areas with higher reflective powder content, while the light is darker and the color appears darker in areas with lower reflective powder content. Due to the different amounts of reflective powder, a gradient color from light to dark is formed from high to low reflective powder content. At night, due to the effect of the fluorescent powder, the light is darker and the color appears darker in areas with higher reflective powder content, while the light is brighter and the color appears lighter in areas with lower reflective powder content. At this time, the gradient color from dark to light appears lighter. The different gradient colors presented during the day and night produce richer color changes, increasing the practicality of the luminous button. The color change does not require control, only ordinary pigments are needed, and the process is simple, which is conducive to its widespread use.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for coating a luminous button with a gradient color, characterized in that: Includes the following steps: S1. Button positioning: Fix the glow-in-the-dark button at the spraying position; S2. Spraying pigment: Spray a uniform amount of pigment mixed with fluorescent powder onto the surface of the positioned glow-in-the-dark button. The amount of fluorescent powder mixed in the pigment is 50V / V%. S3. Spraying reflective powder: After spraying the pigment, spray a layer of adhesive mixed with reflective powder onto the surface of the glow-in-the-dark button. The amount of reflective powder mixed in the adhesive layer varies in a gradient range of 0-80V / V% in different areas of the glow-in-the-dark button surface. Then, let the glow-in-the-dark button dry. The reflective powder comprises 50-60 parts SiO2, 10-15 parts CaO, 8-12 parts Na2O, 1-2 parts TiO2 and 2-4 parts BaO; The gradient The calculation formula is: ,in For maximum doping amount, Number of regions; S4. Polishing: Polish the surface of the coated glow-in-the-dark buttons, then clean and dry them.

2. The method for coating gradient colors on a luminous button according to claim 1, characterized in that: In step S3, the refractive index of the reflective powder .

3. The method for coating gradient colors on a luminous button according to claim 1, characterized in that: In step S3, the adhesive layer comprises 10-20 parts epoxy resin, 2-5 parts polyimide, and 10-20 parts water.

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