Preparation method of quantum dot skin-feeling glass decoration panel

Abstract

The invention provides a preparation method of a quantum dot skin feeling glass decoration panel, and belongs to the field of glass preparation. The preparation method comprises the following steps: mixing CdS / CdSe core-shell quantum dots with an acrylate oligomer to form a quantum dot-resin composite coating; and then coating printing is conducted on the front face of the glass through quantum dot-resin composite paint, the quantum dot-resin composite paint is attached to the surface of the glass through the quasi-molecule wave band photocuring technology and the thermosetting technology, and the quantum dot skin feeling glass decoration panel is obtained. The CdS / CdSe core-shell quantum dots are adopted as the photoinitiator, the photochemical limitation of a traditional photoinitiator can be broken through due to the adjustable band gap structure and surface active sites of the CdS / CdSe core-shell quantum dots, the quantum dot skin feeling material obtained by mixing the CdS / CdSe core-shell quantum dots with the acrylate oligomer can absorb spectral energy (172-254 nm) of a specific wave band to form micro-textures with the skin feeling effect, and the skin feeling effect of the skin feeling material is improved. The matte glass has matte texture close to that of acid-etched AG glass, and is attractive and comfortable.

Description

Technical Field

[0001] The present invention relates to the technical field of glass preparation, and in particular to a method for preparing a quantum dot skin-feeling glass decorative panel. Background Art

[0002] With the continuous advancement of science and technology and the continuous improvement of people's living standards, people have higher and higher requirements for comfort when they have close contact with smart digital products. This requires that the surfaces of various smart products that come into contact with the skin have a skin-like tactile feeling to satisfy people's pleasant and comfortable feeling when interacting with smart digital products.

[0003] In the existing technology, chemical acid etching technology is used to generate an etching layer with a skin-feel surface effect on the glass surface. When the product surface interacts with the human body, it produces a smooth and delicate, soft and plump velvety feeling and a warm tactile feeling like skin. At the same time, it has excellent properties such as anti-reflective light, anti-scratch, high wear resistance, anti-dust, and anti-fingerprint.

[0004] The invention patent with publication number CN119320240A discloses a manufacturing process and etching liquid for a skin-feeling AG glass display panel. The invention discloses an etching liquid that reacts with the glass surface to generate a micron-sized honey-eye-shaped microcrystalline particle attachment layer on the glass surface. These microcrystalline particles are arranged in a concave-convex texture similar to the honey-eye structure. Since the upper surfaces of these micron-sized honey-eye-shaped microcrystalline particles are relatively full and round, the transition of the particle edges is natural and smooth, so that the frosted surface of the glass achieves a silky and smooth effect, and produces a subjective perception of smoothness, tenderness and warmth like skin when in contact with the human body, thus achieving a skin-like skin-feeling effect on the glass surface. However, this method has problems such as production pollution, easy moldy products, difficulty in cleaning, and high cost. Summary of the Invention

[0005] In view of the technical problems existing in the background technology, the present application provides a method for preparing a quantum dot skin-feel glass decorative panel, in which CdS / CdSe core-shell quantum dots are mixed with acrylic UV-curable resin oligomers to form a quantum dot-resin composite coating, which is then applied to the glass surface by printing and coating (roller coating, silk screen printing, spraying, etc.), and then subjected to excimer band light curing technology and thermosetting technology in sequence to allow the quantum dot-resin composite coating (quantum dot ink) to adhere to the glass surface. The quantum dot skin-feel material can absorb spectral energy in a specific band (172nm-254nm) to form a micro-texture with a skin-feel effect, with a matte texture close to that of acid-etched AG glass, and is beautiful and comfortable.

[0006] The present invention provides a method for preparing a quantum dot skin-feeling glass decorative panel, comprising the following steps: S1, cutting, grinding and tempering the glass substrate; S2, dyeing and patterning the back surface of the glass obtained in step S1; S3, printing a primer on the front surface of the glass obtained in step S2, controlling the coating thickness to 10-25 μm, and curing it in a tunnel oven for 5-10 minutes at a baking temperature of 160-220° C. S4, mixing CdS / CdSe core-shell quantum dots with an acrylate UV-curable resin oligomer to form a quantum dot-resin composite coating; using the quantum dot-resin composite coating to print a coating on the front surface of the glass obtained in step S3, with the coating thickness controlled to be 20-60 μm; S5, the coating on the front of the glass obtained in step S4 is micro-cured with an LED lamp; then a surface curing treatment is performed using an excimer lamp to form a skin-feel layer; mercury lamp irradiation is continued for overall depth strengthening, and finally, it is baked in a tunnel furnace for 7-10 minutes at a baking temperature of 140-200°C; cleaning and edge cleaning are performed to obtain a quantum dot skin-feel glass decorative panel.

[0007] In some embodiments, in step S4, the quantum dot-resin composite coating is mainly composed of resin-monomer-initiator-matt powder-additive-quantum dot material; wherein the mass fraction of CdS / CdSe core-shell quantum dots is 0.5-2wt%.

[0008] In some embodiments, the particle size of the CdS / CdSe core-shell quantum dots is in the range of 3-8 nm.

[0009] In some embodiments, the ultraviolet light response band of the quantum dot-resin composite coating is 172nm-254nm.

[0010] In some embodiments, the acrylate UV curable resin oligomer is one of polyurethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate, and pure acrylate.

[0011] In some embodiments, in step S5, during the LED lamp micro-curing treatment, the sample surface is preliminarily cured using an LED lamp with an energy of 70-90%, and then baked in a heat curing tunnel oven for 15-30s at a baking temperature of 140-160°C and a transmission speed of 2-5m / min.

[0012] In some embodiments, in step S5, during the surface curing treatment, the wavelength of the excimer lamp is 172-254 nm, the energy is 1600-1800 mJ / cm2, and the transmission speed is 2-10 m / min.

[0013] In some embodiments, the energy of the mercury lamp during irradiation is 450-700 mJ / cm2.

[0014] In some embodiments, the glass has a thickness of 0.5-8 mm.

[0015] The beneficial effects of the present invention are: 1) The preparation method of the quantum dot skin-feel glass decorative panel of the present invention comprises mixing CdS / CdSe core-shell quantum dots with acrylate UV-curable resin oligomers to form a quantum dot-resin composite coating (quantum dot ink), which is then applied to the glass surface by printing and coating (roller coating, screen printing, spraying, etc.), and then sequentially subjected to excimer light curing technology and thermosetting technology to allow the quantum dot-resin composite coating to adhere to the glass surface. The quantum dot skin-feel material can absorb spectral energy in a specific band (172nm-254nm) to form a micro-texture with a skin-feel effect, with a matte texture close to that of acid-etched AG glass, and is beautiful and comfortable.

[0016] 2) This invention utilizes CdS / CdSe core-shell quantum dots, which, due to their adjustable bandgap structure and surface active sites, can overcome the photochemical limitations of traditional photoinitiators (traditional optical initiators absorb energy limited to a specific spectrum, while quantum dot photoinitiators can convert more spectral energy into specific spectral energy). The light absorption cross-section of CdS / CdSe core-shell quantum dots is 2-3 orders of magnitude higher than the light energy absorbed by traditional photoinitiators. Specifically, traditional photoinitiators, including cationic photoinitiators, primarily absorb energy within a specific wavelength range. The addition of quantum dot photoinitiators results in an energy conversion rate exceeding 85%, and a 60% increase in curing speed compared to traditional photoinitiators.

[0017] 3) The preparation method of the present invention can fully react without vacuum conditions, has a simple process flow, and is suitable for industrial application.

[0018] 4) The present invention sets process parameters to form a product that can be stably produced and applied while meeting the corresponding performance requirements of colored crystal glass.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings used in this application. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0021] Figure 1 This is a schematic diagram of the process for preparing the quantum dot skin-feel glass decorative panel in this application.

[0022] Figure 2 This is a schematic diagram of the structure of the quantum dot skin-feeling glass decorative panel in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0025] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] The present application provides a method for preparing a quantum dot skin-feel glass decorative panel, comprising the following steps: S1, glass substrate processing: cutting, grinding and tempering of 0.5-8mm glass substrate; S2, dyeing and patterning the back of the glass obtained in step S1; specifically, transferring, dyeing, spraying, painting, screen printing, and roller coating are performed on the back of the glass to form a coating with color and texture.

[0028] S3, printing a primer on the front surface of the glass obtained in step S2, cleaning the glass surface, controlling the thickness of the printed coating to 10-25 μm, and curing it in a tunnel oven for 5-10 minutes; the baking temperature is 160-220°C; S4, mixing CdS / CdSe core-shell quantum dots with an acrylate UV-curable resin oligomer to form a quantum dot-resin composite coating; using the quantum dot-resin composite coating to print a coating on the front surface of the glass obtained in step S3, with the coating thickness controlled to be 20-60 μm; Among them, the main components of quantum dot-resin composite coating are resin-monomer-photoinitiator-quantum dots-matt powder-additive; among them, the mass fraction of CdS / CdSe core-shell quantum dots is 0.5-2wt%, and the particle size range of CdS / CdSe core-shell quantum dots is 3-8nm to enhance the light excitation efficiency.

[0029] The ultraviolet light response band of the quantum dot-resin composite coating is 172nm-254nm.

[0030] The acrylate UV curing resin oligomer is one of polyurethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate and pure acrylate.

[0031] S5, the coating on the front surface of the glass obtained in step S4 is subjected to LED light micro-curing treatment; then, an excimer lamp is used for surface curing treatment to form a skin-feeling layer; and mercury lamp irradiation is continued for overall depth strengthening at an energy of 450-700 MJ / cm 2 Finally, it is baked in a tunnel oven for 7-10 minutes at a baking temperature of 140-200°C; cleaned and the edges are cleaned to obtain a quantum dot skin-feel glass decorative panel.

[0032] Among them, during the LED lamp micro-curing treatment, the LED lamp is used to perform preliminary curing on the sample surface. The energy of the LED lamp is 70-90%, and then it is baked in a hot curing tunnel furnace for 15-30s. The baking temperature is 140-160℃ and the transmission speed is 2-5m / min.

[0033] During surface curing treatment, the wavelength of the excimer lamp is 172-254nm, the energy is 1600-1800 millijoules / square centimeter, and the actual transmission speed is 2-10m / min.

[0034] In this embodiment, CdS / CdSe core-shell quantum dots are mixed with acrylate UV-curable resin oligomers to form a quantum dot-resin composite coating system, and then the quantum dot-resin composite coating is grafted onto the glass surface by printing coating (roller coating, screen printing, spraying, etc.) to form glass with a skin-feel effect.

[0035] Specifically, the quantum dot-resin composite coating is applied to the glass surface, and then sequentially processed through excimer light curing technology and thermosetting technology to allow the quantum dot-resin composite coating to adhere to the glass surface. The quantum dot skin-feel material can absorb spectral energy in a specific band (172nm-254nm) to form a micro-texture with a skin-feel effect, with a matte texture close to acid-etched AG glass, which is beautiful and comfortable.

[0036] Some specific examples are listed below. It should be noted that the examples described below are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. Where specific techniques or conditions are not specified in the examples, the techniques or conditions described in the literature in this area or the product specifications are used. Reagents or instruments used without manufacturer's indication are all commercially available conventional products.

[0037] Example 1 See also Figures 1 to 2 As shown, this embodiment provides a method for preparing a quantum dot skin-feeling glass decorative panel, comprising the following steps: S1, glass substrate processing: slicing, edge grinding and tempering of 3.2mm glass; S2, dyeing and patterning the back of the glass obtained in step S1; specifically, transferring, dyeing, spraying, painting, screen printing, and roller coating are performed on the back of the glass to form a coating with color and texture.

[0038] S3, printing a primer on the front surface of the glass obtained in step S2, with a coating thickness of 15 μm, and curing it in a tunnel oven for 10 minutes; the baking temperature is 175° C. S4, mixing CdS / CdSe core-shell quantum dots with polyurethane acrylate to form a quantum dot-resin composite coating; using the quantum dot-resin composite coating to print a coating on the front surface of the glass obtained in step S3, with the coating thickness being 60 μm; Among them, in the quantum dot-resin composite coating, the mass fraction of CdS / CdSe core-shell quantum dots is 0.5wt%, and the particle size range of CdS / CdSe core-shell quantum dots is 3-8nm.

[0039] S5, the coating on the front surface of the glass obtained in step S4 is subjected to LED light micro-curing treatment; then, an excimer lamp is used for surface curing treatment to form a skin-feeling layer; and mercury lamp irradiation is continued with an energy of 600 MJ / cm2 Finally, it is baked in a tunnel oven for 7 minutes at a baking temperature of 180°C; the surface is cleaned and the edges are cleaned to obtain a quantum dot skin-feel glass decorative panel.

[0040] Among them, during the LED light micro-curing treatment, the energy of the LED lamp is 80%, and then it is baked in a hot curing tunnel furnace for 22 seconds, the baking temperature is 150℃, and the transmission speed is 3m / min.

[0041] During the surface curing treatment, the wavelength of the excimer lamp is 254 nm, the energy is 1800 mJ / cm2, and the transmission speed is 4 m / min.

[0042] Examples 2-4 and Comparative Examples 1-2 Examples 2-4 and Comparative Examples 1-2 respectively disclose a method for preparing a quantum dot skin-feel glass decorative panel. Compared with Example 1, the difference is that in the quantum dot-resin composite coating in step S4, the mass fraction of CdS / CdSe core-shell quantum dots is different, as shown in Table 1. The rest is roughly the same as Example 1 and will not be repeated here.

[0043] Table 1 Parameter settings for Examples 2-4 and Comparative Examples 1-2 Comparative Example 3 Comparative Example 3 discloses a method for preparing a quantum dot skin-feel glass decorative panel. Compared with Example 1, the difference is that the CdS / CdSe core-shell quantum dots are replaced with conventional photoinitiator TPO. The rest is basically the same as Example 1 and will not be repeated here.

[0044] Comparative Example 4 Comparative Example 4 discloses a method for preparing a quantum dot skin-feel glass decorative panel. Compared with Example 1, the difference is that polyurethane acrylate is replaced by vinyl ether UV resin. The rest is roughly the same as Example 1 and will not be repeated here.

[0045] Comparative Example 5 Comparative Example 5 discloses a method for preparing a quantum dot skin-feel glass decorative panel. Compared with Example 1, the difference is that no excimer lamp is used for surface curing treatment in step S5. The rest is roughly the same as Example 1 and will not be repeated here.

[0046] Comparative Example 6 Comparative Example 6 discloses a method for preparing a quantum dot skin-feeling glass decorative panel. Compared to Example 1, this method differs in that step S5 utilizes a conventional light-curing reaction, specifically, direct UV mercury lamp curing. The remaining steps are generally the same as in Example 1 and are not further described here.

[0047] The glass products prepared in Examples 1-4 and Comparative Examples 1-6 were tested for relevant properties. The specific test items, test methods and test requirements are shown in the following table.

[0048] The test results of the glass panel products prepared in Examples 1-4 and Comparative Examples 1-6 are shown in the following table.

[0049] Table 2 Test results of Examples 1-4 and Comparative Examples 1-6 Table 2 shows that the addition of quantum dots enhances the coating's reaction strength, hardness, and crosslink density, with an addition of 1.5% achieving optimal results. The skin-feeling resin component affects both the smoothness and hardness. A 0.2% mass fraction of CdS / CdSe core-shell quantum dots improves the skin-feeling coating's hardness somewhat, but the reaction is not yet sufficient.

[0050] When the mass fraction of CdS / CdSe core-shell quantum dots increases to 3%, the resin reaction is already sufficient and the excess dosage can no longer improve the overall performance. Therefore, it is best to control the mass fraction of CdS / CdSe core-shell quantum dots in the range of 0.5-2wt%.

[0051] The light curing method directly affects the skin feel. LED-excimer lamp-mercury lamp curing is the best. Conventional skin hardness can only reach a maximum of 2H, while the technical solution of this application can reach 4H, with a good skin feel effect.

[0052] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and any embodiments having substantially the same structure and effect as the technical concept within the scope of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the present application, any other embodiments that can be conceived by those skilled in the art and that combine some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A method for preparing a quantum dot skin-feeling glass decorative panel, characterized in that: The following steps are involved: S1, cutting, grinding and tempering the glass substrate; S2, dyeing and patterning the back surface of the glass obtained in step S1; S3, printing a primer on the front surface of the glass obtained in step S2, controlling the coating thickness to 10-25 μm, and curing it in a tunnel oven for 5-10 minutes at a baking temperature of 160-220° C. S4, mixing CdS / CdSe core-shell quantum dots with acrylate UV-curable resin oligomers to form a quantum dot-resin composite coating; Using the quantum dot-resin composite coating to print a coating on the front surface of the glass obtained in step S3, the coating thickness is controlled to be 20-60 μm; S5, performing a micro-curing treatment with an LED lamp on the coating on the front surface of the glass obtained in step S4; Then, an excimer lamp is used for surface curing to form a skin-feel layer; a mercury lamp is used to further strengthen the overall depth, and finally, the panel is baked in a tunnel furnace for 7-10 minutes at a temperature of 140-200°C; the panel is cleaned and the edges are cleaned to obtain a quantum dot skin-feel glass decorative panel.

2. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: In step S4, the mass fraction of CdS / CdSe core-shell quantum dots in the quantum dot-resin composite coating is 0.5-2 wt%.

3. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: The particle size of the CdS / CdSe core-shell quantum dots ranges from 3 to 8 nm.

4. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: The ultraviolet light response band of the quantum dot-resin composite coating is 172nm-254nm.

5. The method for preparing the quantum dot skin-feeling glass decorative panel according to claim 1, wherein: The acrylate UV curable resin oligomer is one of polyurethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate and pure acrylate.

6. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: In step S5, during the LED light micro-curing treatment, the sample surface is preliminarily cured using an LED lamp with an energy of 70-90%, and then baked in a heat curing tunnel furnace for 15-30 seconds at a baking temperature of 140-160°C and a transmission speed of 2-5m / min.

7. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: In step S5, during the surface curing treatment, the wavelength of the excimer lamp is 172-254 nm, the energy is 1600-1800 mJ / cm2, and the transmission speed is 2-10 m / min.

8. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: When irradiated by a mercury lamp, the energy is 450-700 mJ / cm2.

9. The method for preparing a quantum dot skin-feeling glass decorative panel according to claim 1, wherein: In step S1 , the thickness of the glass is 0.5-8 mm.

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