阅读说明：本技术 图案化曲面玻璃及其制备方法和应用 (Patterned curved glass and preparation method and application thereof ) 是由 李可峰 向前飞 张志发 许仁 王伟 于 2020-04-26 设计创作，主要内容包括：本发明公开了一种图案化曲面玻璃的制备方法,其包括如下步骤：于玻璃基板待装饰面的预设区域涂覆第一油墨,在待装饰面上形成图案化的第一油墨层；去除图案化的第一油墨层中的分散剂,并使第一油墨固化于所述玻璃基板的表面,形成图案层；在图案层上涂覆第二油墨并使第二油墨固化,获得图案化玻璃基板；对图案化玻璃基板进行热弯处理。该制备方法先将油墨涂覆再对玻璃基板进行热弯处理,对设备精度和制备环境要求不高,良品率高,能够形成复杂的图案,具有极高的实用价值。(The invention discloses a preparation method of patterned curved glass, which comprises the following steps: coating first printing ink on a preset area of a surface to be decorated of a glass substrate, and forming a patterned first printing ink layer on the surface to be decorated; removing the dispersant in the patterned first ink layer, and solidifying the first ink on the surface of the glass substrate to form a pattern layer; coating second printing ink on the pattern layer and solidifying the second printing ink to obtain a patterned glass substrate; and carrying out hot bending treatment on the patterned glass substrate. The preparation method comprises the steps of coating the ink and then carrying out hot bending treatment on the glass substrate, has low requirements on equipment precision and preparation environment, has high yield, can form complex patterns, and has high practical value.)

1. The preparation method of the patterned curved glass is characterized by comprising the following steps of:

(1) coating first printing ink on a preset area of a surface to be decorated of a glass substrate, and forming a patterned first printing ink layer on the surface to be decorated;

(2) removing the dispersant in the patterned first ink layer, and curing the first ink on the surface of the glass substrate to form a pattern layer;

(3) coating second printing ink on the pattern layer, removing a dispersing agent in the second printing ink, and solidifying the second printing ink to prepare a patterned glass substrate;

(4) carrying out hot bending treatment on the patterned glass substrate;

wherein the first ink comprises a first dispersant, a first glass powder and a color developing component; the color developing component comprises an inorganic pigment and/or a precursor thereof;

the second ink includes a second dispersant and a second glass powder.

2. The method according to claim 1, further comprising a step of repeating the steps (1) and (2) to form two or more patterned layers before the step (3).

3. The method of claim 1, wherein the first ink and/or the second ink is applied by at least one of screen printing, pad printing, ink jet printing, and ink jet printing.

4. The method of claim 1, wherein the first glass powder and/or the second glass powder has a particle size D50 of 0.1 μm to 10 μm.

5. The method according to claim 1, wherein the absolute value of the difference between the softening temperature of the second glass powder and the softening temperature of the glass substrate is 100 ℃ or less.

6. The method for producing a patterned curved glass according to claim 1, wherein the first ink contains 40 to 90% by mass of the first dispersing agent, 5 to 50% by mass of the first glass powder, and 5 to 40% by mass of the coloring component; and/or

In the second ink, the second glass powder accounts for 30-80% by mass.

7. The method for producing a patterned curved glass according to any one of claims 1 to 6, wherein in the step (2), the dispersant is removed by heating to evaporate it; and/or

In the step (2) and the step (3), the first ink and the second ink are cured by heating under the following conditions: the temperature is 100-650 ℃, and the heating time is 5-200 min; and/or

In the step (4), the temperature of the hot bending treatment is 600-900 ℃.

8. The method for manufacturing patterned curved glass according to claim 7, wherein the thermal bending process is performed by heating and pressing the patterned glass substrate or performing a heat absorption process to bend the patterned glass substrate.

9. The method according to any one of claims 1 to 6, further comprising subjecting the patterned glass substrate after the hot bending treatment to at least one of an engraving treatment, a polishing treatment and an ion exchange treatment after the step (4).

10. A patterned curved glass, comprising:

a curved glass substrate;

the patterned ink layer is solidified on the surface of the curved glass substrate; the patterned ink layer is prepared from raw materials including first glass powder and inorganic pigment;

the ink protective layer is solidified on the surface of the curved glass substrate and is prepared from raw materials including second glass powder.

11. The patterned curved glass of claim 10, wherein the curved glass and the patterned ink layer and the ink protective layer cured on the curved glass are ion exchanged to form a strengthened layer.

12. An electronic device, wherein a housing is a curved glass housing formed of the patterned curved glass produced by the method for producing patterned curved glass according to any one of claims 1 to 9; or

Is a curved glass housing formed from the patterned curved glass of claim 10 or 11.

13. A window glass formed of a patterned curved glass produced by the method for producing a patterned curved glass according to any one of claims 1 to 9; or

Formed of the patterned curved glass of claim 10 or 11.

14. A structural member comprising the patterned curved glass produced by the method for producing patterned curved glass according to any one of claims 1 to 9; or

The patterned curved glass of claim 10 or 11.

Technical Field

The invention relates to the technical field of glass, in particular to patterned curved glass and a preparation method and application thereof.

Background

Glass is selected by various electronic device manufacturers as the housing material for electronic devices because of its good heat dissipation and grip properties. Compared with the traditional flat glass, the 3D curved glass with smooth radian transition has better vision and holding performance, thereby having wide application prospect. However, the processing procedures of the curved glass and the flat glass are greatly different, and the processing difficulty of the curved glass is higher, so that how to perform patterned decoration on the curved glass also becomes a problem to be solved urgently.

Traditionally, curved glass is decorated by a film pasting method, a pad printing method or an ink-jet method. The sticking film method is that a sticking film with a specific pattern is independently prepared and then is stuck to the curved glass; due to the curved shape of the curved glass, the precision requirements of equipment and workshops for preparing a film with high bonding precision are extremely high, which causes the problems of high production cost and low yield. The pad printing method requires a high-precision pad printing machine and a silica gel pad printing head which is easy to wear, high in cost and short in service life, increases the product cost and is not favorable for large-scale application. The ink-jet method is to directly spray ink on the surface of curved glass, and the method has large limitation and is difficult to form complex patterns. Moreover, the three methods can only be applied to the decoration of the curved glass with a simpler surface shape, and are difficult to apply to the decoration of the curved glass with a more complicated surface shape.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a method for manufacturing patterned curved glass, which has the advantages of low requirements for equipment precision and manufacturing environment, high yield, and capability of forming complex patterns, so as to avoid the problems in the conventional technology.

Another object of the present invention is to provide a patterned curved glass which can be prepared by the above method for preparing a patterned curved glass, and further to provide applications of the patterned curved glass.

According to one embodiment of the invention, the preparation method of the patterned curved glass comprises the following steps:

(1) coating first printing ink on a preset area of a surface to be decorated of a glass substrate, and forming a patterned first printing ink layer on the surface to be decorated;

(2) removing the solvent in the patterned first ink layer, and curing the first ink on the surface of the glass substrate to form a pattern layer;

(3) coating second printing ink on the pattern layer, removing a dispersing agent in the second printing ink, and solidifying the second printing ink to obtain a patterned glass substrate;

(4) carrying out hot bending treatment on the patterned glass substrate;

wherein the first ink comprises a first dispersant, a first glass powder and a color developing component; the color developing component comprises an inorganic pigment and/or a precursor thereof;

the second ink includes a second dispersant and a second glass powder.

In one embodiment, before step (3), the method further comprises the step of repeating step (1) and step (2) to form two or more pattern layers.

In one embodiment, the thickness of the layer of patterned ink is 1 μm to 10 μm; the thickness of the two or more layers of patterned ink is 2-50 μm.

In one embodiment, the first ink and/or the second ink is applied in a manner selected from at least one of screen printing, pad printing, ink jetting, and ink jet printing.

In one embodiment, the first glass powder and/or the second glass powder has a particle size D50 of 0.1 μm to 10 μm.

In one embodiment, the absolute value of the difference between the softening temperature of the second glass powder and the softening temperature of the glass substrate is less than or equal to 100 ℃.

In one embodiment, in the first ink, the first dispersing agent is 40 to 90% by mass, the first glass powder is 5 to 50% by mass, and the coloring component is 5 to 40% by mass; and/or

In the second ink, the second glass powder accounts for 30-80% by mass.

In one embodiment, the method for removing the solvent in step (2) is heating to evaporate the solvent.

In one embodiment, in the step (2) and the step (3), the manner of curing the first ink and the second ink is heat curing, and the conditions of the heat curing are as follows: the temperature is 100-650 ℃, and the heating time is 5-200 min.

In one embodiment, in the step (4), the temperature of the hot bending process is 600 ℃ to 900 ℃.

In one embodiment, the thermal bending process is performed by heating and pressing or heat-absorbing the patterned glass substrate to bend it into shape.

In one embodiment, the method further comprises performing at least one of a finishing process, a polishing process and an ion exchange process on the patterned glass substrate after the hot bending process after the step (4).

According to an embodiment of the present invention, there is also provided a patterned curved glass capable of being prepared by the method for preparing a patterned curved glass in any one of the above embodiments, the patterned curved glass including:

a curved glass substrate;

the patterned ink layer is solidified on the surface of the curved glass substrate; the patterned ink layer is prepared from raw materials including first glass powder and inorganic pigment;

the ink protective layer is solidified on the surface of the curved glass substrate and is prepared from raw materials including second glass powder.

In one embodiment, the curved glass, the patterned ink layer cured on the curved glass and the ink protective layer are ion exchanged to form a strengthening layer.

An electronic device, wherein a shell is a curved glass shell formed by the patterned curved glass prepared by the method for preparing patterned curved glass in any embodiment; or

Is a curved glass housing formed from the patterned curved glass described above.

A window glass formed from the patterned curved glass prepared by the method of any of the above embodiments; or

The glass is formed by the patterned curved glass.

A structural member comprising the patterned curved glass prepared by the method for preparing patterned curved glass according to any one of the embodiments; or

The patterned curved glass is described above.

The traditional film pasting method, pad printing method or ink-jet method has the problems of high processing difficulty, high cost, low yield and difficulty in forming complex patterns. The invention develops a new method for preparing patterned curved glass to avoid the problems. Specifically, the preparation method of the patterned curved glass provided by the invention comprises the steps of coating ink containing glass powder on the surface of a glass substrate to form a pattern, further heating and curing the patterned ink on the surface of the glass substrate, coating second ink on the pattern to form an ink protective layer, and finally performing hot bending treatment on the glass substrate to obtain the patterned curved glass. The preparation method of the patterned curved glass does not need to prepare a film with high-precision equipment and a production environment, has high yield, and can form a complex pattern which is difficult to prepare by an ink-jet method. The ink containing the glass powder can enable the ink layer to be effectively sintered on the surface of the glass during the hot bending process and not flow and deform. Therefore, the method has high practical value.

Preferably, during the above method for manufacturing the patterned curved glass, a multi-layer pattern may be formed by repeatedly applying ink and heat-curing, and the multi-layer pattern may collectively constitute a more complex pattern or a pattern having a plurality of colors.

Meanwhile, the patterned curved glass obtained by the preparation method is suitable for further processing, for example, preferably, the patterned glass substrate after the hot bending processing can be subjected to fine engraving, polishing or ion exchange processing, so that the curved glass is more delicate in shape, or has extremely high strength to adapt to different use occasions.

Drawings

Fig. 1 is a schematic diagram illustrating a method for manufacturing a patterned curved glass according to an embodiment of the present invention;

fig. 2 is a picture of a patterned curved glass prepared in example 1 of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. "Multi", as used herein, means a combination of two or more items.

As shown in fig. 1, one embodiment of the present invention provides a method for manufacturing patterned curved glass, which includes the following steps.

Step S100, coating first printing ink on a preset area of a surface to be decorated of the glass substrate, and forming a patterned first printing ink layer on the surface to be decorated.

The glass substrate can be a plane glass substrate, namely 2D glass; it may also be an edge-bent glass substrate, commonly known as 2.5D glass. The glass substrate with the bent edge specifically means that one plane of the glass substrate is not different from the flat glass, but the other plane of the glass substrate close to the edge has a certain bending radian. An edge-bent glass substrate may be one in which one side of the glass is edge-bent but the other side is still flat. The thickness of the edge bent portion may be thinner than that of the central portion.

The material of the glass substrate may be soda-lime-silicate glass, lead-silicate glass, aluminosilicate glass, lithium-containing silicate glass, borosilicate glass, or the like. However, it should be noted that the glass may have different softening temperatures depending on the oxide components in the glass material, and therefore, the softening temperature should be appropriately selected for the subsequent treatment. The added glass powder material used may be selected from, but not limited to, one or more of soda-lime-silicate glass, lead-silicate glass, aluminosilicate glass, or borosilicate glass, lithium-containing silicate glass.

It should be understood that the glass substrate should be provided with a pre-degreasing or pre-dusting to avoid interfering with the subsequent ink application process. Meanwhile, the glass substrate can be subjected to proper first-time fine engraving so as to have a preset shape meeting the requirement; for example, the edges of the glass substrate are finished to make the edges of the glass substrate smoother.

The first ink is a high-temperature-resistant hard ink, and specifically comprises a first dispersing agent, a first glass powder and a color development component, wherein the color development component comprises a high-temperature-resistant pigment and/or a precursor thereof. Among them, the high temperature resistant pigment has high temperature resistant property, and is usually an inorganic pigment, such as copper chromium black, titanium nickel yellow, titanium chromium brown, etc.; the precursor of the high-temperature resistant pigment is a precursor of the high-temperature resistant pigment, and the precursor can form the corresponding high-temperature resistant pigment in the subsequent heating treatment process.

Optionally, in the first ink, the mass ratio of the first dispersing agent is 40% to 90%, the mass ratio of the first glass powder is 5% to 50%, and the mass ratio of the color developing component is 5% to 40%. The first dispersant is not particularly limited, and may be generally selected from water or volatile organic solvents, such as at least one of alcohols, ethers, alcohol ethers, and lipids. The first glass powder is selected from glass powder with a softening temperature lower than the temperature of the glass substrate; for example, the softening temperature of the first glass powder is at least 150 ℃ lower than the glass substrate temperature. It is understood that the first ink mainly functions to form a desired pattern, wherein the mass ratio of the first glass powder, the coloring component and the dispersant may be adjusted according to the color of the desired pattern to be formed or the actually used substance. The present invention is not particularly limited to this.

The ink may be applied in a manner selected from at least one of screen printing, pad printing, ink jet, and ink jet printing. Preferably, the manner of applying the ink is screen printing. The screen printing method has the advantages of large-scale preparation and high precision, and can effectively improve the preparation efficiency and save the cost.

Step S200, removing the dispersant in the patterned first ink layer, and curing the first ink on the surface of the glass substrate to form a pattern layer.

Wherein, the solvent in the ink is removed by drying; for example, the glass substrate coated with the patterned ink is placed in an environment with a temperature of 60 ℃ to 300 ℃ for 5min to 200min, for example, baked at a temperature of 150 ℃ for 30min, so that the organic solvent is sufficiently evaporated. Or, alternatively, the drying can be carried out quickly at a temperature lower than 500 ℃. Alternatively, the drying speed can be accelerated by vacuumizing or introducing flowing atmosphere.

Drying can make the printing ink pattern can tentatively stereotype evenly, and remaining macromolecular composition in the printing ink can further be got rid of to the mode of heat treatment after tentatively stereotypeing, makes high temperature resistant pigment and glass powder in the printing ink fully solidify the combination with the glass substrate simultaneously, forms the patterned printing ink layer attached to the glass substrate surface. Wherein, in the heating treatment process, the surface temperature of the glass substrate is controlled to be 100-650 ℃, and the heating time is 5-200 min; for example, the glass substrate is heat-treated at 580 ℃ for 60min, so that the high-temperature resistant pigment and the glass powder are combined with the glass substrate in a curing way.

In addition, in order to prevent dust points on the surface of the glass from being pressed out in the heating treatment process, a layer of high-temperature resistant cotton can be coated on the baking plate bearing the glass substrate.

It should also be understood that the pattern may be a more complex pattern formed on the entire glass surface, or may be a simple pattern formed only on the corners as a decoration or mark, such as a circle or a straight line.

Preferably, when the pattern to be formed is simple or has a single color, only one layer of patterned ink may be coated on the surface to be decorated of the glass substrate; for a single layer of patterned ink, the thickness may be 1 μm to 10 μm; for example, the thickness is 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 8 μm, 10 μm. When the pattern to be formed is complex or has more than one color, the glass substrate surface to be decorated may be coated with multiple layers of patterned ink by repeating the steps S100 and S200; for the case of more complex patterns, the desired pattern can be formed by applying multiple layers of ink in an overlapping manner; for patterns with abundant color requirements, the pigment component of each selected ink should be adjusted correspondingly. A multi-layer patterned ink, typically 2 μm to 50 μm thick; more specifically, the thickness of the multi-layered patterned ink is 2 μm, 4 μm, 8 μm, 10 μm, 14 μm, 16 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm.

And step S300, coating second printing ink on the pattern layer, removing the dispersing agent in the second printing ink, and curing the second printing ink to prepare the patterned glass substrate.

One of the roles of the second ink is as a protective layer of the pattern formed by the first ink; of course, it may also serve to assist in patterning. The second ink includes a second dispersant and a second glass powder. The second dispersant may be the same as or different from the first dispersant. Optionally, the first dispersant is selected from at least one of water, ethers, alcohols, alcohol ether organic solvents, or lipid organic solvents. In the second ink, the mass percentage of the second glass powder is 30-80%; preferably, in the second ink, the second glass powder is present in a proportion of 50% to 80% by mass. There is no particular limitation in the material of the second dispersant, which may be generally selected from water or volatile organic solvents. The second dispersant may be the same as or different from the first dispersant, and is not particularly limited. Other materials, such as a color developing component, may also be included in the second ink, and this is not intended to limit the present invention. The content of each component of the glass is generally complex, and the glass has different softening temperatures according to the content of silicon element and the content of other metals or doping elements, so that glass powder with similar element types but different softening temperatures can be selected when the actual selection is carried out.

The softening temperature of the glass powder in the second ink can be closer to the softening temperature of the glass substrate; specifically, the difference between the softening temperature of the glass powder in the second printing ink and the softening temperature of the glass substrate is less than or equal to 100 ℃; preferably, the difference between the softening temperature of the glass powder in the second ink and the softening temperature of the glass substrate is less than or equal to 50 ℃; more preferably, the difference between the softening temperature of the glass powder in the second ink and the softening temperature of the glass substrate is less than or equal to 30 ℃. In order to ensure that the adhesion of the pattern layer and that the pattern layer does not deform during the hot bending, the softening temperature of the glass powder in the first ink is generally significantly lower. But this may cause the pattern layer formed of the first ink to be significantly softened during the hot bending process to adhere to the hot bending mold to cause the pattern portions to be broken. Therefore, it is also necessary to apply a second ink for protection. The softening temperature of the second glass powder in the second ink should be higher than the softening temperature of the first glass powder; or a second glass to ensure that it does not deform significantly during the hot bending process.

Step S400, a thermal bending process is performed on the patterned glass substrate. The thermal bending process in this step is to place the patterned glass substrate obtained in step S300 in a mold, and to bend the patterned glass substrate to form 3D curved glass by easily processing the patterned glass substrate under a higher temperature condition than the heating condition in step S300. Alternatively, the mold may use a graphite mold or a metal mold.

Wherein, in the hot bending treatment process, the temperature of the patterned glass substrate should be controlled to be 600-900 ℃; preferably, the temperature of the patterned glass substrate is controlled to be 700 to 900 ℃. The method of bending the patterned glass substrate is a heat-absorbing treatment or a pressing treatment. It is easy to understand that heat absorption means that air is drawn from one side of the patterned glass substrate to be bent, and the glass is bent by means of the air pressure imbalance between the upper and lower surfaces of the glass substrate. The pressing is performed by bending the glass substrate by applying an external force. As a specific example, another effect of the hot bending process on the patterned glass substrate is that the high temperature resistant pigment and glass frit in the ink can be further combined with the glass substrate by the high temperature process to achieve integration. The sintered pattern is difficult to remove by conventional rubbing.

Preferably, the patterned glass substrate after the thermal bending process may be subjected to finishing engraving.

The glass substrate processed in step S400 is firmly bonded to the surface pattern thereof, and thus may be further subjected to an engraving process.

The finishing carving means that the size of the glass after the hot bending treatment is further modified manually or mechanically to obtain a target shape so as to meet specific requirements.

Preferably, the patterned glass substrate after the hot bending process may be further subjected to a polishing process.

The pattern formed on the surface of the glass substrate by the above-mentioned hot bending treatment can also withstand grinding during the polishing treatment, and thus the surface of the patterned glass substrate can also be polished to obtain a bright glass surface. The polishing material can be selected from a pig hair brush, cerium oxide polishing solution and the like.

Preferably, the patterned glass substrate after the thermal bending process or after the engraving and/or polishing process may be subjected to a chemical tempering process.

The glass substrate is brittle and fragile, and is difficult to meet the requirements of many application occasions. Therefore, in the actual use process, the glass is often required to be tempered. Glass tempering treatment can be generally divided into physical tempering and chemical tempering; physical tempering means heating softening and rapid cooling treatment of glass so as to form large stress on the surface of the glass, thereby obviously improving the strength of the glass; chemical tempering means that ions on the surface of the glass are subjected to ion exchange with molten alkali salt, so that compressive stress is formed on the surface of the glass, and tensile stress is formed inside the glass, thereby achieving the effect of improving the strength of the glass.

It is easy to understand that the physical tempering of the glass with a certain pattern formed in advance can cause serious defects in the stress stability of the glass, has higher self-explosion risks, is only suitable for thicker glass and is not suitable for practical use. And the problem of ion exchange of the pattern part is faced when the glass is subjected to chemical toughening, so that the problems of uneven stress on the surface of the glass and easy brittle fracture of the pattern part are caused. In order to avoid the above problems, a high-strength patterned glass substrate is obtained, and in the method for manufacturing patterned curved glass, glass powder is provided in the ink used in each of the above steps S200 and S300. The glass powder is mixed with the high-temperature-resistant pigment and filled in the pattern, the high-temperature-resistant pigment is more firmly combined with the glass substrate in the high-temperature treatment process, and the glass powder can be used as an ion exchange material and a channel in the ion exchange process so as to avoid the influence on the substrate strengthening effect of the pattern position and further meet the requirement of chemical strengthening stress equalization of different positions of the substrate. Therefore, the formed patterned curved glass not only has a pattern which is firmly combined, but also has higher strength and extremely high practical value.

The above steps are only one preferred embodiment provided by the present invention, and in other embodiments, other feasible processes for the patterned glass substrate may be further included.

For example, in a specific example of other embodiments, the method further includes a step of performing a plating process on the chemically tempered glass surface. The coating treatment may be a hard antireflection coating or an anti-fingerprint coating, but is not particularly limited thereto.

For another example, in another specific example of the embodiment, the method further includes performing an ultrasonic cleaning step on the glass substrate after the heating treatment in step S300 to remove traces of the organic solvent remaining on the glass surface or impurities such as dust, which does not affect the pattern on the glass surface that has been primarily sintered and solidified.

In addition, the embodiment also provides the patterned curved glass prepared by the preparation method of the patterned curved glass and the specific application of the patterned curved glass.

In particular, the patterned curved glass can be applied to electronic equipment, and the shell of the electronic equipment is a curved glass shell formed by processing the patterned curved glass. It should be understood that the housing herein may be a front glass cover of the electronic device, and may also be a rear housing of the electronic device.

The patterned curved glass can also be used as a window glass, such as a glass of a window or a skylight of a vehicle, or a curved glass required in some buildings, or a window of other vehicles.

In addition, the patterned curved glass can also be used as a glass component of a structural member. The structural member is specifically various members which can form a building installation project entity after being hoisted, assembled and installed in the building installation project construction process.

The embodiment provides a novel preparation method of patterned curved glass, the preparation process of the novel preparation method has low requirements on equipment precision and preparation environment, the yield is high, the preparation efficiency is high, complex patterns can be formed, and the defects of high requirements on equipment precision and preparation environment, low yield, simple structure of decorative patterns and single color in the traditional method for obtaining the patterned curved glass are effectively overcome. Furthermore, the patterned curved glass obtained by the method can be further subjected to processes such as fine carving, polishing, chemical toughening and the like, so that the patterned curved glass is suitable for various occasions and has high practical value.

For easier understanding and realization of the invention, the following test examples, which are easier to implement and more specific, are also provided as references. The embodiments and advantages of the present invention will be more apparent from the following description of specific test examples.

The starting materials used in the following test examples and comparative examples were all commercially available without specific reference.

Test example 1

(1) Providing a glass substrate cleaned in advance; the thickness of the glass substrate is 0.7mm, and the size is 159.42mm multiplied by 76.18 mm; the glass substrate is pre-carved into a 2.5D glass substrate with a bent edge; the softening temperature of the glass substrate was 850 ℃.

(2) Coating ink on the surface to be decorated of the glass substrate in a screen printing mode to form a frame and a mobile phone front camera hole shape; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersing agent, and glass powder and a chrome black inorganic pigment uniformly dispersed in the dispersing agent.

(3) Placing the glass substrate coated with the printing ink in an oven, baking at 130 ℃ for 60min, and removing the organic solvent to fully dry the glass substrate; and taking out and transferring into a high-temperature oven, carrying out heat treatment at 600 ℃ for 30min to fully remove organic matter components remained in the printing ink, and fully solidifying the glass powder and the high-temperature resistant pigment in the printing ink on the surface of the glass substrate.

(4) Coating a layer of printing ink on the surface of the pattern formed in the step (3), and repeating the drying and heat treatment steps in the step (3) to fully cure the glass powder and the chrome black inorganic pigment in the printing ink on the surface of the glass substrate; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersing agent, and glass powder and a chrome black inorganic pigment which are uniformly dispersed in the dispersing agent; the softening temperature of the glass powder was 880 ℃.

(5) The patterned glass substrate is placed in a graphite mold, heated in a nitrogen environment to make the temperature of the upper surface (decoration surface) of the glass substrate 850 ℃ and the temperature of the lower surface 830 ℃, and simultaneously subjected to pressure treatment to bend and mold the glass substrate to form the curved glass.

(6) And carrying out secondary fine engraving on the curved glass after bending forming, so that the size of the curved glass is suitable for actual use requirements.

(7) Polishing the decorative surface of the curved glass subjected to the secondary fine engraving to make the decorative surface brighter; the polishing material is selected from a pig hair brush and cerium oxide polishing solution.

(8) Carrying out chemical toughening treatment on the polished curved glass; the toughening condition was ion exchange for 3 hours in 400 ℃ molten potassium nitrate salt to obtain sufficient strength of the cover plate.

(9) Plating an anti-fingerprint film on the outer surface of the curved glass after chemical toughening treatment.

Test example 2

(1) Providing a glass substrate cleaned in advance; the thickness of the glass substrate is 0.7mm, and the size is 159.42mm multiplied by 76.18 mm; the glass substrate was previously finished into a 2.5D glass substrate with a bent edge.

(2) Coating ink on the surface to be decorated of the glass substrate in a screen printing mode to form a preset shape of a screen; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersing agent, and glass powder and a chrome black inorganic pigment uniformly dispersed in the dispersing agent.

(3) Placing the glass substrate coated with the printing ink in an oven, baking for 30min at 200 ℃, and removing the organic solvent to fully dry the glass substrate; and taking out and transferring the glass substrate into a high-temperature oven, carrying out heat treatment at 500 ℃ for 60min to fully remove organic matter components remained in the printing ink, and fully solidifying the glass powder and the high-temperature resistant pigment in the printing ink on the surface of the glass substrate to form the patterned glass substrate.

(4) Coating a layer of printing ink on the surface of the pattern formed in the step (3), and repeating the drying and heat treatment steps in the step (3) to fully cure the glass powder and the high-temperature-resistant pigment in the printing ink on the surface of the glass substrate; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersing agent, and glass powder and a chrome black inorganic pigment uniformly dispersed in the dispersing agent. The softening temperature of the glass powder material is 720 ℃.

(5) And (3) placing the patterned glass substrate in a graphite mold, heating the patterned glass substrate in a nitrogen environment to make the temperature of the upper surface (decorative surface) of the glass substrate 750 ℃ and the temperature of the lower surface of the glass substrate 720 ℃, and simultaneously carrying out pressurization treatment on the glass substrate to bend and mold the glass substrate to form the curved glass.

(6) And carrying out secondary fine engraving on the curved glass after bending forming, so that the size of the curved glass is suitable for actual use requirements.

(7) Polishing the decorative surface of the curved glass subjected to the secondary fine engraving to make the decorative surface brighter; the polishing material is selected from a pig hair brush and cerium oxide polishing solution.

(8) Carrying out chemical toughening treatment on the polished curved glass; the toughening condition was ion exchange for 3 hours in 400 ℃ molten potassium nitrate salt to obtain sufficient strength of the cover plate.

(9) Plating an anti-fingerprint film on the outer surface of the curved glass after chemical toughening treatment.

Test example 3

(1) Providing a glass substrate cleaned in advance; the thickness of the glass substrate is 0.7mm, and the size is 159.42mm multiplied by 76.18 mm; the glass substrate is a 2D glass substrate.

(2) Coating ink on the surface to be decorated of the glass substrate in a screen printing mode to form a preset shape of a screen; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersing agent, and glass powder and a chrome black inorganic pigment uniformly dispersed in the dispersing agent.

(3) Placing the glass substrate coated with the ink in an oven by adopting a rapid radiation heat treatment method, baking for 2min at 260 ℃, and removing the organic solvent to fully dry the glass substrate; and then, carrying out heat treatment in an infrared oven at 650 ℃ for 5min to fully remove the residual organic matter components in the ink, and fully curing the glass powder and the high-temperature resistant pigment in the ink on the surface of the glass substrate.

(4) And (3) repeating the steps (2) and (3) by replacing silk screens with different shapes and inks with different colors, and then coating a layer of patterned ink and curing the ink to form the glass substrate with a more complex pattern.

(5) Coating a layer of printing ink on the surface of the pattern formed in the step (4), and repeating the drying and heat treatment steps in the step (4) to fully cure the glass powder and the high-temperature-resistant pigment in the printing ink on the surface of the glass substrate; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersing agent, and glass powder and a chrome black inorganic pigment which are uniformly dispersed in the dispersing agent, wherein the softening temperature of the glass powder is 820 ℃.

(6) And (3) placing the patterned glass substrate in a graphite mold, heating the glass substrate in a nitrogen environment to ensure that the temperature of the upper surface (decorative surface) of the glass substrate is 870 ℃ and the temperature of the lower surface of the glass substrate is 850 ℃, and simultaneously performing heat absorption treatment on the glass substrate to bend and mold the glass substrate to form the curved glass.

(7) Polishing the decorative surface of the curved glass subjected to the secondary fine engraving to make the decorative surface brighter; the polishing material is selected from a pig hair brush and cerium oxide polishing solution.

(8) Carrying out chemical toughening treatment on the polished curved glass; the toughening condition was ion exchange for 3 hours in 400 ℃ molten potassium nitrate salt to obtain sufficient strength of the cover plate.

(9) Plating an anti-fingerprint film on the surface of the curved glass after chemical toughening treatment.

Comparative example 1

(1) Providing a glass substrate cleaned in advance; the thickness of the glass substrate is 0.7mm, and the size is 159.42mm multiplied by 76.18 mm; the glass substrate was previously finished into a 2.5D glass substrate with a bent edge.

(2) Coating ink on the surface to be decorated of the glass substrate in a screen printing mode to form a frame and a mobile phone front camera hole shape; the ink comprises a mixture of ether alcohol and acrylic ester as a dispersant, and a chromium black inorganic pigment uniformly dispersed in the dispersant.

(3) Placing the glass substrate coated with the printing ink in an oven, baking at 130 ℃ for 60min, and removing the organic solvent to fully dry the glass substrate; and taking out and transferring into a high-temperature oven, carrying out heat treatment at 600 ℃ for 30min to fully remove organic matter components remained in the printing ink, and solidifying the high-temperature-resistant pigment in the printing ink on the surface of the glass substrate to form the patterned glass substrate.

(4) The patterned glass substrate is placed in a graphite mold, heated in a nitrogen environment to enable the temperature of the upper surface (decoration surface) of the glass substrate to be 870 ℃ and the temperature of the lower surface to be 850 ℃, and simultaneously subjected to pressurization treatment to be bent and molded to form the curved glass.

(5) And carrying out secondary fine engraving on the curved glass after bending forming, so that the size of the curved glass is suitable for actual use requirements.

(6) Polishing the decorative surface of the curved glass subjected to the secondary fine engraving to make the decorative surface brighter; the polishing material is selected from a pig hair brush and cerium oxide polishing solution.

(7) Carrying out chemical toughening treatment on the polished curved glass; the toughening condition was ion exchange for 3 hours in 400 ℃ molten potassium nitrate salt to obtain sufficient strength of the cover plate.

(8) Plating an anti-fingerprint film on the outer surface of the curved glass after chemical toughening treatment.

Comparative example 2

(1) Providing a glass substrate cleaned in advance; the thickness of the glass substrate is 0.7mm, and the size is 159.42mm multiplied by 76.18 mm; the glass substrate was previously finished into a 2.5D glass substrate with a bent edge.

(2) Coating ink on the surface to be decorated of the glass substrate in a screen printing mode to form a frame and a mobile phone front camera hole shape; the ink comprises an organic solvent, glass powder and a high-temperature resistant pigment which are uniformly dispersed in the organic solvent.

(3) Placing the glass substrate coated with the printing ink in an oven, baking at 130 ℃ for 60min, and removing the organic solvent to fully dry the glass substrate; and taking out and transferring the glass substrate into a high-temperature oven, carrying out heat treatment at 600 ℃ for 30min to fully remove organic matter components remained in the printing ink, and fully solidifying the glass powder and the high-temperature resistant pigment in the printing ink on the surface of the glass substrate to form the patterned glass substrate. Wherein the softening temperature of the glass powder is 650 ℃.

(4) The patterned glass substrate is placed in a graphite mold, heated in a nitrogen environment to enable the temperature of the upper surface (decoration surface) of the glass substrate to be 870 ℃ and the temperature of the lower surface to be 850 ℃, and simultaneously subjected to pressurization treatment to be bent and molded to form the curved glass.

(5) And carrying out secondary fine engraving on the curved glass after bending forming, so that the size of the curved glass is suitable for actual use requirements.

(6) Polishing the decorative surface of the curved glass subjected to the secondary fine engraving to make the decorative surface brighter; the polishing material is selected from a pig hair brush and cerium oxide polishing solution.

(7) Carrying out chemical toughening treatment on the polished curved glass; the toughening condition was ion exchange for 3 hours in 400 ℃ molten potassium nitrate salt to obtain sufficient strength of the cover plate.

(8) Plating an anti-fingerprint film on the outer surface of the curved glass after chemical toughening treatment.

As shown in fig. 2, the finished curved glass prepared by the experimental example 1 has a black frame area as a decorative pattern, and the pattern is not deformed after being bent and tempered with the glass; it should be understood that fig. 2 is only a simpler pattern, but that more complex patterns can be produced in this way as well.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent a preferred embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.