Bird-proof glass and preparation method thereof

Abstract

The present invention provides a bird-strike-proof glass and a preparation method, belonging to the field of glass technology. The bird-strike-proof glass includes a glass substrate and a bird-strike-proof coating attached to the non-outer surface of the glass substrate. The coverage of the bird-strike-proof coating on the attached surface of the glass substrate is 10% to 70% to form a film pattern. The wavelength band of ultraviolet rays reflected by the bird-strike-proof glass is 250nm to 400nm. 5 to 8% of quartz powder, 5 to 10% of aluminum oxide, 3 to 5% of alkane leveling agent and the remaining amount of polytetrafluoroethylene are mixed to form a liquid to be attached for the bird-strike-proof coating; the liquid to be attached is transferred to the attached surface of the glass substrate by a silk screen printer; the bird-strike-proof coating and the glass substrate are sintered into one at a high temperature of 650 to 700°C to complete the preparation of the bird-strike-proof glass. The present invention has the advantages of low cost and bird-strike-proof effect.

Description

Technical Field

[0001] The invention belongs to the technical field of glass and relates to bird-impact-proof glass and a preparation method thereof. Background Art

[0002] For many people, birds and nature have an intrinsic value. Birds have been important to humans throughout history and are often used to symbolize cultural values ​​such as peace, freedom, and fidelity. In addition to the joy they bring to people, we rely on them to perform critical ecological functions. Birds consume large quantities of insects, control rodent populations, reduce damage to crops and forests, and help limit the spread of diseases such as West Nile virus, dengue fever, and malaria. Birds play a vital role in regenerating habitats by pollinating plants and dispersing seeds. Birds are also a huge economic resource. According to the U.S. Fish and Wildlife Service, birdwatching is one of the fastest growing recreational activities in North America and a multi-billion dollar industry.

[0003] In recent decades, advances in glass technology and production have made it a popular trend to build buildings with full curtain wall glass. We can see a general increase in the amount of glass used. Unfortunately, with the increase in the amount of glass, the incidence of bird collisions has also increased.

[0004] In recent decades, growing concern for the environment has spurred the development of “green” standards and rating systems, most notably the Green Building Council (GBC), which agrees that green buildings should not threaten wildlife.

[0005] Traditional bird-strike-proof glass uses physical coating to form a grid pattern on the glass surface. However, the physical coating process for making a band film that birds can recognize is complex and has poor stability. It is difficult to mass-produce glass with bird-strike-proof function, and it has a great impact on the light transmittance and performance of the glass itself. Summary of the invention

[0006] The purpose of the present invention is to provide a bird-strike-proof glass in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is to provide a bird-strike-proof glass which is simple to prepare and low in cost.

[0007] The object of the present invention can be achieved through the following technical solutions: a bird-strike-proof glass, characterized in that it includes a glass substrate and a bird-strike-proof coating attached to the non-outer surface of the glass substrate, the bird-strike-proof coating has a coverage rate of 10% to 70% on the attached surface of the glass substrate, and forms a film pattern, and the bird-strike-proof glass reflects ultraviolet rays in the wavelength band of 250nm to 400nm.

[0008] Furthermore, the film pattern is an array of dots, the diameter of the dots is 3-4 mm, and the coverage of the dots on the attachment surface of the glass substrate is 50%-65%.

[0009] Furthermore, the film pattern is an array of circular rings, the diameter of the circular rings is 3-4 mm, and the coverage of the dots on the attachment surface of the glass substrate is 10%-25%.

[0010] Furthermore, the glass substrate is low-E glass.

[0011] Furthermore, the glass substrate is a single-piece plate, and the inner side surface of the glass substrate is the attachment surface of the bird-strike protection coating.

[0012] Furthermore, the glass substrate is a hollow glass plate, and the attachment surface of the bird strike protection coating is the inner side surface of the outer plate of the glass substrate.

[0013] A method for preparing bird-impact-proof glass, characterized in that it comprises the following steps:

[0014] A. Preparation of bird-strike-proof coating: by mass percentage, 5-8% of quartz powder, 5-10% of aluminum oxide, 3-5% of alkane leveling agent and the balance of polytetrafluoroethylene are mixed to form a liquid to be attached to the bird-strike-proof coating;

[0015] B. Screen production: The mesh that meets the design accuracy and mesh number requirements is attached to the screen frame through a screen stretching machine. The contact part of the mesh and the screen frame needs to be coated with screen glue to make the mesh and the screen frame firmly bonded together. Photosensitive glue is evenly coated on the blank space of the film pattern in the screen frame. After exposure and printing, a screen with the designed film pattern is formed on the mesh;

[0016] C. Transferring the bird-strike-proof coating: using a screen printer to transfer the liquid to be attached prepared in step A onto the attachment surface of the glass substrate using the screen prepared in step B as a mold;

[0017] D. Sintering: The coating of step C is dried and shaped, and then the bird-strike-proof coating and the glass substrate are sintered into one at a high temperature of 650-700° C. to complete the preparation of the bird-strike-proof glass.

[0018] Furthermore, the thickness of the bird strike protection coating is 0.02 mm to 0.5 mm.

[0019] The traditional physical coating process for making bird-recognizable band films is complex and has poor stability, and it is difficult to mass-produce glass with bird-proofing functions. The production process of the present invention is simple, efficient, and suitable for continuous large-scale production. In addition, the functional coating components used in the sample preparation of the present invention are mainly silicon dioxide, aluminum oxide, polytetrafluoroethylene, and alkane leveling agents. Therefore, the coating can be appropriately adjusted according to the application environment and method to form a transparent, nearly colorless coating attached to the glass substrate. It basically does not cause color interference to the coating layer of the glass substrate. While ensuring the original green and environmentally friendly optical data of low-E, it can better express the market demand for design concepts, architectural culture, and connotations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the bird-impact-proof glass in the first embodiment.

[0021] Figure 2 It is a structural schematic diagram of the bird-impact-proof glass in the second embodiment.

[0022] Figure 3 It is a schematic diagram of the film pattern in the first embodiment.

[0023] Figure 4 This is a physical sample diagram of the first embodiment.

[0024] In the figure, 1. Glass substrate; 2. Bird-proof coating. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] Embodiment 1:

[0027] like Figure 1 , Figure 3 and Figure 4 As shown, a low-E coated monolithic glass is used as a glass substrate, and a bird-strike-proof coating is attached to its inner surface. The film pattern of the bird-strike-proof coating is an array of dots with a diameter of 2 mm. The distance between the centers of adjacent dots in the horizontal and vertical directions is 3.2 mm. The coverage rate of the bird-strike-proof coating on the attached surface of the glass substrate is 61%. The formed bird-strike-proof glass reflects ultraviolet rays in the wavelength range of 250nm to 400nm.

[0028] Instead of the traditional physical coating process, this solution uses screen printing to attach the bird-impact protection coating. The formula is based on polytetrafluoroethylene, which has the function of adjusting the reflection band. It is matched with 5-8% quartz powder and 5-10% alumina to strengthen the adhesion between the coating and the glass substrate, and improve the scratch resistance and acid and alkali resistance of the bird-impact protection coating on the glass substrate. In addition, 3-5% alkane leveling agent is prepared and stirred to form a liquid to be attached. Screen printing is widely used in many industries, such as circuit board production, etc. High-precision screen printing There are no technical difficulties in brushing equipment. The method of applying the pattern in this scheme is similar to that of applying the strong film to the circuit board, that is, first prepare a screen, which is a mold of the anti-bird-strike film pattern, and the blank space of the pattern is photosensitive adhesive, which is solidified on the mesh in the grid after exposure and drying. Then, the liquid to be attached is evenly applied to the screen, and the liquid to be attached fills the concave parts of the screen. Finally, the screen machine is used to transfer the liquid to be attached to the attachment surface of the glass substrate. After the attachment liquid is dried and fixed, the glass substrate is sintered to integrate the anti-bird-strike coating with the glass substrate to obtain bird-strike-proof glass.

[0029] Embodiment 2

[0030] The content of this embodiment is substantially the same as that of the first embodiment, except that the glass substrate is hollow glass, that is, after the bird-impact-proof glass as described in the first embodiment is prepared, the double-layer or multi-layer hollow glass is prepared using the single-piece glass as the material, such as Figure 2 As shown, the bird strike protection coating is located on the second surface from the outside to the inside, that is, the inner side of the outer plate.

[0031] It should be noted that the screen printing process is an existing general process, the molding glue of the screen can be replaced with photosensitive glue, and the pattern molding liquid adopts the anti-bird strike coating liquid of this scheme. Other processes are almost the same. Technical personnel in this industry can adjust the color and pattern as needed to obtain similar products of this scheme, and can also use the color interference of the anti-bird strike coating and the glass substrate to form glass products of new colors. The molding contour of the anti-bird strike coating can also be made smaller to form a glass product with a film pattern that is not easily visible to the human eye. Adjustments such as these are routine adjustments within the protection scope of this scheme.

[0032] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A method for preparing bird-impact-proof glass, characterized in that: The steps include: A. Preparation of bird-strike-proof coating: by weight percentage, 5-8% of quartz powder, 5-10% of aluminum oxide, 3-5% of alkane leveling agent and the balance of polytetrafluoroethylene are mixed to form a liquid to be attached to the bird-strike-proof coating; B. Screen production: The mesh that meets the design accuracy and mesh number requirements is attached to the screen frame through a screen stretching machine. The contact part of the mesh and the screen frame needs to be coated with screen glue to make the mesh and the screen frame firmly bonded together. Photosensitive glue is evenly coated on the blank space of the film pattern in the screen frame. After exposure and printing, a screen with the designed film pattern is formed on the mesh; C. Transferring the bird-strike-proof coating: using a screen printer to transfer the liquid to be attached prepared in step A onto the attachment surface of the glass substrate using the screen prepared in step B as a mold; Sintering: drying and shaping the coating in step C, and then sintering the bird-impact-proof coating and the glass substrate at a high temperature of 650-700° C. to form a whole, thereby completing the preparation of the bird-impact-proof glass; The bird-strike-proof glass comprises a glass substrate and a bird-strike-proof coating attached to the non-outer surface of the glass substrate. The bird-strike-proof coating has a coverage rate of 10% to 70% on the attached surface of the glass substrate and forms a film pattern. The bird-strike-proof glass reflects ultraviolet rays in a wavelength band of 250nm to 400nm.

2. The method for preparing bird-impact-proof glass according to claim 1, characterized in that: The film pattern is an array of dots, the diameter of the dots is 3-4 mm, and the coverage of the dots on the attachment surface of the glass substrate is 50%-65%.

3. The method for preparing bird-impact-proof glass according to claim 1, characterized in that: The film pattern is an array of circular rings with a diameter of 3 to 4 mm and a coverage rate of the circular rings on the attachment surface of the glass substrate of 10% to 25%.

4. The method for preparing bird-impact-proof glass according to claim 1, characterized in that: The glass substrate is low-E glass.

5. The method for preparing bird-impact-proof glass according to claim 1, characterized in that: The glass substrate is a single-piece plate, and the inner side surface of the glass substrate is the attachment surface of the bird-strike-proof coating.

6. The method for preparing bird-impact-proof glass according to claim 1, characterized in that: The glass substrate is a hollow glass plate, and the attachment surface of the bird-impact protection coating is the inner side surface of the outer plate of the glass substrate.

7. A method for preparing bird-impact-resistant glass according to any one of claims 1 to 6, characterized in that: The thickness of the bird-impact-proof coating of the bird-impact-proof glass is 0.02 mm to 0.5 mm.

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