CN116282903A - Anti-dazzle glass, preparation method thereof and display device - Google Patents
Anti-dazzle glass, preparation method thereof and display device Download PDFInfo
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- CN116282903A CN116282903A CN202310115571.9A CN202310115571A CN116282903A CN 116282903 A CN116282903 A CN 116282903A CN 202310115571 A CN202310115571 A CN 202310115571A CN 116282903 A CN116282903 A CN 116282903A
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- 239000002994 raw material Substances 0.000 claims abstract description 28
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/0013—Re-forming shaped glass by pressing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/0086—Heating devices specially adapted for re-forming shaped glass articles in general, e.g. burners
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Compositions (AREA)
Abstract
The application relates to an anti-dazzle glass and a preparation method thereof, wherein the preparation method comprises the following steps: melting and forming raw materials to prepare base glass; coarsening one surface of base glass to form particles on the surface to prepare coarsened glass; and carrying out heat treatment on the coarsened base glass to planarize the surfaces of the particles, thereby preparing the anti-dazzle glass. Wherein, the raw materials comprise the following components in percentage by mass: 55% -65% of SiO 2 12% -21% of Al 2 O 3 12 to 16 percent of Na 2 O, 2-5% MgO, 0-3% K 2 O, 0-3% Li 2 O, zrO 0-2.3% 2 0 to 3 percent of B 2 O 3 0 to 1.5 percent of BaO and 0 to 2 percent of ZnO. And K is 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 0.2 to 5 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-5%. The anti-dazzle glass prepared by the method has higher glossiness while ensuring anti-dazzle effect.
Description
Technical Field
The application relates to the technical field of glass, in particular to anti-dazzle glass, a preparation method thereof and a display device.
Background
With the development of intelligent automobiles, higher requirements are put on the operability, fineness, definition and other performances of the vehicle-mounted display device. In order to ensure the comfort and safety of driving, the display device is required to meet the requirement of anti-dazzle while realizing clear and discernable display information. The antiglare glass (anti-glare glass) is produced by roughening the surface of glass by chemical etching or the like, thereby reducing the specular reflection of the glass and achieving the antiglare purpose. Although the conventional antiglare glass can reduce specular reflection, the diffuse reflection light generated by the antiglare glass diffuses in all directions, so that the glossiness of the glass is reduced, and the visual effect of the display device is affected. According to market feedback, the 60-degree glossiness of the vehicle-mounted display device is required to reach 110% -130%, and the 60-degree glossiness of the traditional anti-dazzle glass is usually not more than 110%.
Therefore, how to prepare an antiglare glass with higher glossiness is a technical problem to be solved.
Disclosure of Invention
Based on the above, the application provides the anti-dazzle glass with higher glossiness and the preparation method thereof. Further, the present application provides a display device including the above antiglare glass.
In a first aspect, the present application provides a method for preparing antiglare glass, including the steps of:
melting and forming raw materials to prepare base glass;
coarsening one surface of base glass to prepare coarsened glass;
carrying out heat processing treatment on the roughened glass to planarize the roughened surface of the roughening treatment, so as to prepare anti-dazzle glass;
wherein, the raw materials comprise the following components in percentage by mass:
and K is 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 0.2 to 5 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-5%.
According to the preparation method of the anti-dazzle glass, firstly, the base glass with higher glossiness, chemical temperature property and thermal stability is prepared by regulating and controlling the proportion of raw materials; then, particles are separated out from the surface of the base glass through roughening treatment, so that a roughened surface with an anti-dazzle effect is formed, and specular reflection is effectively reduced; and then softening the roughened glass through heat processing treatment, increasing the surface tension of the roughened surface, further increasing the size of particles, and enabling the roughened surface to be flatter, so that diffuse reflection light generated on the surface of the anti-dazzle glass is more orderly, and the glossiness is increased. Therefore, the prepared anti-dazzle glass has higher glossiness when reaching an anti-dazzle effect, and has smoother and smoother surface, and can improve the visual effect and touch experience of the display device when being used for preparing the display device.
In some of these embodiments, al 2 O 3 The mass percentage of (2) is 16.8-21%;
and/or Na 2 The mass percentage of O is 12-14.8%;
and/or MgO with the mass percentage of 2.9-5%;
and/or, K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 3.2% -5%;
and/or, zrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-3.2%.
In some of these embodiments, the roughening treatment includes a chemical etching treatment, a frosting treatment, and a chemical polishing treatment that are sequentially performed.
In some of these embodiments, the thermal processing treatment comprises: while heating the roughened glass, a pressing treatment is performed.
In some of these embodiments, the pressing process includes the steps of:
and pressing pieces with smooth surfaces are respectively arranged on the two surfaces of the roughened glass, and the smooth surfaces are in contact with the roughened glass.
In some of these embodiments, the preset temperature of the thermal process is 580 ℃ to 680 ℃;
and/or the heat preservation time of the thermal processing treatment is 20-50 min;
and/or the heating rate of the heat processing treatment is 8-15 ℃ per minute.
In some of these embodiments, the temperature of the thermal processing treatment is 590 ℃ to 660 ℃.
In some of these embodiments, the method of making further comprises: before roughening treatment, a protective film is arranged on one surface of the base glass, and then roughening treatment is carried out on the surface of one side of the base glass, which is opposite to the protective film; and after the roughening treatment and before the heat treatment, removing the protective film, followed by subjecting the roughened glass to the heat treatment.
In a second aspect, the present application provides an antiglare glass produced according to the method for producing an antiglare glass of the first aspect, the antiglare glass having a 60 ° gloss of 114% or more.
In a third aspect, the present application provides a display device comprising the antiglare glass of the second aspect.
Drawings
FIG. 1 is a polarizing microscope image of a roughened surface of a base glass according to an embodiment of the present application after roughening treatment;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a polarizing microscope image of the roughened surface of the base glass of FIG. 1 after heat treatment;
fig. 4 is a partial enlarged view of fig. 3.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with the present application are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise. As used herein, "at least one" refers to any one, any two, or any two or more of the listed items. As used herein, "above a certain number" should be understood to mean a range of numbers and greater than a certain number.
The term "and/or," "and/or" as used in this application includes any one of two or more of the listed items in relation to each other and also includes any and all combinations of the listed items in relation to each other, including any two or more of the listed items in relation to each other, or all combinations of the listed items in relation to each other.
Where the terms "comprising," "having," and "including" are used in this application, it is intended to cover a non-exclusive inclusion, another element may be added, unless a specifically defined term is used, such as "consisting of only," "… …," etc. Unless mentioned to the contrary, singular terms may include plural and are not to be construed as being one in number.
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 application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The glossiness in this application refers to the percentage of the amount of reflected light of the surface of the test sample to the amount of reflected light of the surface of the standard sample under the same conditions. The glossiness 60 degrees refers to the glossiness test result obtained when the incident light is incident at an included angle of 60 degrees with the surface normal of the sample to be tested and the standard sample. Gloss 60 ° can be tested using commercially available gloss measuring instruments.
The conventional technology adopts an antiglare treatment (or roughening treatment) to roughen the surface of glass to realize an antiglare function. It is understood that when light is incident on the rough surface of the glass, diffuse reflection occurs, and the generated reflected light is irregularly reflected in different directions, so that specular reflection is effectively reduced, and strong reflected light can be prevented from stimulating human eyes, thereby achieving the purpose of anti-dazzle. However, when the roughness of the glass surface is too large, the display image becomes blurred. The preparation process of the traditional anti-dazzle glass mainly comprises frosting and chemical polishing treatment, wherein the surface of the glass is roughened by the frosting treatment to form a roughened surface with an anti-dazzle effect; the roughness of the roughened surface is improved through chemical polishing treatment, and the definition and glossiness are improved. However, after the chemical polishing treatment, the roughened surface of the glass is still rough, so that diffuse reflection light generated on the surface of the glass is still disordered, the glossiness of the glass is low, and the visual experience of a user is affected.
The research of the application finds that the glossiness of the traditional anti-dazzle glass is lower mainly because the roughness of the roughened surface cannot be effectively improved by chemical polishing treatment. Specifically, the roughened surface of the antiglare glass is generally formed by uneven grains, the raised portions have granular shapes, and when light is incident on the surface of the particles, the normal directions of the positions are inconsistent due to different curvatures of the surfaces of the particles, so that reflected light rays are reflected in different directions. The traditional chemical polishing treatment utilizes the etching action of the polishing solution to enable the whole particle to be smoother and more round, and the surface of the particle still has different curvatures everywhere, so that the traditional chemical polishing treatment has limited improvement on the glossiness of the glass. According to the preparation method, the anti-dazzle glass preparation process is improved, the surfaces of particles are flatter, the roughened surfaces of the glass are flatter, diffuse reflection light is generated more orderly, and the purpose of increasing glossiness is achieved. In addition, the glossiness of the anti-dazzle glass is increased by regulating the proportion of raw materials, so that the overall glossiness of the anti-dazzle glass is further improved.
An embodiment of the present application provides a method for manufacturing antiglare glass, including steps S100 to S300.
Step S100: and melting and forming the raw materials to prepare the base glass.
In some embodiments, the raw materials comprise the following components in percentage by mass:
and K is 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 0.2 to 5 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-5%.
The prepared base glass has higher chemical stability, thermal stability and glossiness by regulating and controlling the proportion of raw materials. Specifically, siO 2 、Al 2 O 3 、Na 2 O and MgO are main components for forming the base glass, and the chemical stability and the thermal stability of the base glass can be ensured by regulating the contents of the components; k (K) 2 O、Li 2 O、B 2 O 3 、ZrO 2 BaO and ZnO are added as components for improving the optical performance of the glass, and K is added 2 O、Li 2 O and B 2 O 3 At least one of the three components can enhance the refractive index of the base glass, further increase the glossiness of the base glass, and regulate the total addition of the three componentsThe amount of the additive can prevent crystallization; adding ZrO 2 At least one of BaO and ZnO, and regulating the total addition amount of the BaO and ZnO can reduce the crystallization tendency of the glass and further improve the stability of the base glass.
Silicon dioxide (SiO) 2 ) Is a main component forming a glass framework, and can improve the performances of thermal stability, chemical stability, ultraviolet light transmission and the like of glass. When SiO 2 When the content (the content is not specifically described below and is the mass percentage content) of the glass is more than 65%, a higher melting temperature is needed when preparing the base glass, so that the base glass is crystallized, the glossiness of the base glass is affected, and the erosion resistance of the base glass to the chemical etching solution is reduced; when SiO 2 When the content of (C) is less than 55%, the molding property of the base glass is poor, and the mechanical strength and the optical property are not satisfactory. Based on this, siO 2 The content of (2) is 55% to 65%, specifically 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64% or 65%, it being understood that SiO 2 The content of (2) can be selected from 55-65%.
Alumina (Al) 2 O 3 ) Is a main component for forming a glass intermediate, and can improve the heat stability, the erosion resistance to etching solution, the mechanical strength, the hardness and the refractive index of the base glass, when Al 2 O 3 When the content of (2) is less than 12%, the above properties of the base glass are poor; when Al is 2 O 3 When the content of (2) is more than 21%, the viscosity of the molten glass can be increased, and the clarification difficulty of the base glass can be improved. Based on this, al 2 O 3 The content of (2) is 12% to 21%, specifically 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20% or 21%, and it is understood that Al 2 O 3 The content of (2) can be selected from 12-21%.
In some embodiments, al in mass percent 2 O 3 16.8 to 21 percent of Al 2 O 3 When the content of (C) is within the above range, it can be further mentioned thatThe glossiness of the base glass is raised.
Sodium oxide (Na) 2 O) as a flux, the meltability of the glass raw material can be improved. Increase Na 2 The content of O can improve the melting property of the raw material, but when Na 2 When the content of O is more than 16%, the corrosion resistance and thermal stability of the glass are lowered. Based on this, na 2 The content of O is 12% -16%, specifically 12%, 13%, 14%, 15% or 16%, and as can be appreciated, na 2 The content of O can be selected in the range of 12-16%.
In some embodiments, na 2 The mass percentage of O is 12-14.8%, na 2 When the content of O is within the above range, the meltability of the glass raw material can be further improved, and the glossiness of the base glass can be increased.
Magnesium oxide (MgO) can reduce the viscosity of molten glass at high temperature, promote the melting of glass raw materials and the clarification of the molten glass, and can improve the erosion resistance of base glass. When the MgO content is less than 2%, the viscosity of the glass liquid is larger, and the melting property of the glass raw material is poorer; when the MgO content is more than 5%, the glass is easily drawn. Based on this, the content of MgO is 2% -5%, specifically may be 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, and it is understood that the content of MgO may be selected within the range of 2% -5% as appropriate.
In some embodiments, the mass percentage of MgO is 2.9-5%, and when the content of MgO is in the above range, the viscosity of the molten glass can be further improved, and the glossiness of the base glass can be increased.
Potassium oxide (K) 2 O), lithium oxide (Li) 2 O) and boron oxide (B) 2 O 3 ) The glass has the function of fluxing, is introduced as an external oxide of a glass network, can improve the melting performance of glass raw materials, reduce the viscosity of glass liquid and can reduce the crystallization tendency of glass. Adding K into the raw material formula 2 O、Li 2 O and B 2 O 3 At least one of the above can effectively reduce the precipitated crystals in the base glass and increase the folding of the base glassEmissivity, transparency, and gloss. Based on this, K 2 O is 0 to 3 mass percent, li 2 O is 0 to 3 mass percent, B 2 O 3 The mass percentage of (2) is 0-3%. Alternatively, K 2 O is 0, 0.5%, 1%, 1.5%, 2%, 2.5% or 3% by mass, li 2 O is 0, 0.5%, 1%, 1.5%, 2%, 2.5% or 3% by mass, B 2 O 3 Is 0, 0.5%, 1%, 1.5%, 2%, 2.5% or 3% by mass. Understandably, K 2 O、Li 2 O and B 2 O 3 The mass percentages of (2) may also be selected independently from the range of 0 to 3%. In addition, K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of (2) and (5) is 0.2% -5%, specifically 0.2%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of (2) can be selected within the range of 0.2-5%.
In some embodiments, K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages is 3.2 to 5 percent, K 2 O、Li 2 O and B 2 O 3 When the sum of the mass percentages is within the above range, the melting property of the molten glass can be further improved, and the glossiness of the base glass can be increased.
Zirconia (ZrO) 2 ) Barium oxide (BaO) and zinc oxide (ZnO) are introduced as glass network exosome oxides, which can increase the glossiness, chemical stability and thermal stability of the base glass. Adding ZrO into raw material formula 2 At least one of BaO and BaO can enhance the above properties of the base glass. Based on this, zrO 2 The mass percentage of the composite material is 0 to 2.3 percent, the mass percentage of BaO is 0 to 1.5 percent, and the mass percentage of ZnO is 0 to 2 percent. Alternatively, zrO 2 0, 0.4%, 0.8%, 1.2%, 1.5%, 2% or 2.3% by mass, 0, 0.4%, 0.8%, 1.2% or 1.5% by mass of BaO,0, 0.4%, 0.8%, 1.2%, 1.6% or 2% by mass of ZnO.Understandably, zrO 2 Other suitable selections can be made within the range of 0-2.3%, the mass percentage of BaO can be made within the range of 0-1.5%, and the mass percentage of ZnO can be made within the range of 0-2%. In addition, zrO 2 The sum of the mass percentages of BaO and ZnO is 0.2% -5%, and can be specifically 0.2%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, zrO 2 The sum of the mass percentages of BaO and ZnO can be selected to be in the range of 0.2-5%, when the sum of the mass percentages of the BaO, the ZnO exceeds 5%, crystallization is easy to occur, and the glossiness of the base glass cannot be effectively improved.
In some embodiments, zrO 2 The sum of the mass percentages of BaO and ZnO is 0.2% -3.2%, and ZrO 2 When the sum of the mass percentages of BaO and ZnO is within the above-described range, the glossiness, chemical stability, and thermal stability of the base glass can be further increased.
In some embodiments, the raw materials consist of the following components in percentage by mass: 55% -65% of SiO 2 16.8 to 21 percent of Al 2 O 3 12 to 14.8 percent of Na 2 O, 2.9-5% MgO, 0-3% K 2 O, 0-3% Li 2 O, zrO 0-2.3% 2 0 to 3 percent of B 2 O 3 0 to 1.5 percent of BaO,0 to 2 percent of ZnO and K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 3.2 to 5 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-3.2%.
In some embodiments, the raw materials consist of the following components in percentage by mass: 55% -62.8% of SiO 2 13-21% of Al 2 O 3 12 to 15 percent of Na 2 O, 2-5% MgO, 0-3% K 2 O,0 to 1.6 percent of Li 2 O, zrO 0-2.3% 2 0.5 to 0.8 percent of B 2 O 3 0 to 0.3 percent of BaO,0 to 2 percent of ZnO and K 2 O、Li 2 O and B 2 O 3 Is of mass percent of (a)The sum is 1.1 to 5 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-4%.
In some embodiments, the raw materials consist of the following components in percentage by mass: 55% -61.4% SiO 2 13-21% of Al 2 O 3 14 to 15 percent of Na 2 O, 2.1 to 4.5 percent of MgO and 2.4 to 3 percent of K 2 O, zrO 0.2-2.3% 2 0.5 to 0.8 percent of B 2 O 3 0 to 2 percent of ZnO and K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 3.2 to 3.8 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-4%.
And (3) melting the prepared raw materials to convert the solid raw materials into a molten state, thereby obtaining the glass liquid with certain viscosity. In some embodiments, the melting temperature is 1500 ℃ to 1600 ℃ for 4 hours to 8 hours. Alternatively, the melting temperature is 1550 ℃ to 1650 ℃ and the time is 6 hours.
In some embodiments, after melting, the temperature is reduced to 1450-1550 ℃, and the glass is kept stand and maintained for 1-5 hours to homogenize the glass.
In some embodiments, the forming is selected from one of casting, float forming, calendaring, overflow forming, and drop forming.
In some embodiments, the method of making further comprises annealing the shaped glass to obtain a base glass.
Step S200: coarsening one surface of the base glass to prepare coarsened glass.
During roughening treatment, raised grains are formed on the surface of the base glass, and depressions are formed between adjacent grains, so that uneven grains are formed on the base glass, and an anti-dazzle effect is achieved.
In some embodiments, the roughening treatment includes a chemical etching treatment, a frosting treatment, and a chemical polishing treatment in that order. The roughening treatment roughens the surface of the base glass to form a dense roughened surface with an antiglare effect. Specifically, the surface of the base glass can be subjected to an erosion reaction through chemical etching treatment to form an uneven surface; the frosting treatment is to crystallize the frosting powder on the corroded glass surface in a dipping mode, form crystal nuclei and grow up continuously, and further improve the surface roughness of the base glass; the uneven surface of the glass is smoother by chemical polishing treatment, and a uniform and fine roughened surface is obtained.
In some embodiments, the etching solution used in the chemical etching process is a mixed solution of hydrofluoric acid and sulfuric acid, and the time of the chemical etching process is 10s to 60s. Optionally, the etching solution has a volume ratio of 1:1 and 3vol% H 2 SO 4 The time of the chemical etching treatment was 30s. Through regulating and controlling the chemical etching treatment conditions, granular crystals are separated out from the surface of the base glass, the roughness is increased, and the anti-dazzle effect is achieved.
In some embodiments, the frosting treatment is performed by dipping the base glass with the frosting liquid for 30s to 20s. Optionally, the frosting liquid is an aqueous solution containing frosting powder, the mass concentration of the frosting powder is 40% -60%, and the frosting treatment time is 45s. Through regulating and controlling the frosting treatment conditions, granular crystals are further separated out from the surface of the base glass, and the roughness is improved.
In some embodiments, the polishing solution used in the chemical polishing process is a mixed solution of hydrofluoric acid and sulfuric acid, and the time of the chemical polishing process is 120s to 240s. Optionally, the etching solution has a volume ratio of 1: 1% by volume of HF and 2% by volume of H 2 SO 4 The time for the chemical etching treatment was 180s. The surface of the particles is smoother and the definition of the base glass is improved by regulating and controlling the conditions of chemical polishing treatment.
Step S300: and carrying out heat treatment on the roughened glass to planarize the surfaces of the particles, thereby preparing the anti-dazzle glass.
During the heat treatment, the roughened glass is softened by heating, and the surface tension increases. At this time, the particles deform under the action of surface tension, the size of the particles is increased, the surfaces of the particles are smoother, and the glossiness is higher. And because the pits between the adjacent particles still exist, the roughened surface still has concave-convex lines, so that the anti-dazzle requirement can be met.
In some embodiments, the thermal processing treatment comprises: while heating the roughened glass, a pressing treatment is performed. Understandably, when the roughened glass is softened by heating, a certain external force is applied to the surface of the roughened glass, so that the deformation of the particles can be larger, and the size of the particles can be further increased. And because external force mainly acts on the top of the particles, the top of the particles can be smoothed downwards, the surface flatness of the particles is improved, and the glossiness of the anti-dazzle glass is further improved. The external force of the pressing process may come from an external pressing apparatus having means for controlling the pressure and applying the pressure; the external force of the pressing treatment may also come from the gravity of the pressed article disposed on the roughened glass surface. The specific parts for performing the pressing treatment are not limited, and the manufactured anti-dazzle glass can meet the anti-dazzle requirement and simultaneously improve the flatness of the roughened surface. In addition, the surface of the base glass which is not roughened is subjected to heat processing treatment, so that impurities on the surface can be removed, the surface is smoother and smoother, and the overall glossiness of the anti-dazzle glass is improved. The non-roughened surface was used as the surface of the base glass facing the back and roughened.
In some embodiments, the pressing process includes the steps of: and pressing pieces with smooth surfaces are respectively arranged on the two surfaces of the roughened glass, and the smooth surfaces are in contact with the roughened glass. Understandably, the smooth surface of the press member is in contact with the surface of the roughened glass, and the flatness and smoothness of the roughened glass surface can be improved. And because the pressed part has certain weight, proper pressure can be applied to the roughened glass, the downward smoothness of the top ends of the particles is promoted, the similar protrusion heights among different particles are realized, and the flatness of the roughened surface is further promoted.
In some embodiments, the temperature of the thermal processing treatment is 580 ℃ to 680 ℃. Alternatively, the temperature is 580 ℃, 600 ℃, 620 ℃, 640 ℃, 660 ℃ or 680 ℃. It will be appreciated that the temperature of the thermal process may be selected in the range 580 deg.c to 680 deg.c as appropriate.
In some embodiments, the temperature of the thermal processing treatment is 590 ℃ to 660 ℃, optionally 590 ℃, 610 ℃, 630 ℃, 650 ℃, or 660 ℃. It will be appreciated that the temperature of the thermal process may be selected in the range 590 c to 660 c as appropriate. When the temperature of the heat treatment is in the above range, the flatness of the particle surface can be further improved, and the glossiness of the antiglare glass can be improved.
In some embodiments, the soak time of the thermal process is 20 minutes to 50 minutes. Optionally, the incubation time is 20min, 25min, 30min, 35min, 40min, 45min, or 50min. It will be appreciated that the incubation time for the thermal treatment may be selected in other suitable ways within the range of 20 minutes to 50 minutes.
In some embodiments, the method of making further comprises: and (3) obtaining the glossiness of the roughened base glass, and determining the preset temperature according to the glossiness. Specifically, if the obtained glossiness is higher, selecting lower temperature and longer heat preservation time for heat processing treatment; if the obtained glossiness is lower, a higher temperature and a shorter heat preservation time are selected for heat processing treatment. According to the glossiness of the base glass after roughening treatment, the temperature and the heat preservation time of the heat processing treatment can be determined more accurately, the effect of the heat processing treatment is improved, and the glossiness of the anti-dazzle glass is further improved.
In some embodiments, the heating rate of the thermal processing treatment is from 8 ℃/min to 15 ℃/min. Optionally, the heating rate is 8 ℃/min, 9 ℃/min, 10 ℃/min, 11 ℃/min, 12 ℃/min, 13 ℃/min, 14 ℃/min or 15 ℃/min. It will be appreciated that the rate of heating up of the thermal process may be selected in other suitable ways within the range of 8 c/min to 15 c/min. By adopting a faster heating rate, the effect of the heat treatment can be ensured.
In some embodiments, the method of making further comprises: before roughening treatment, a protective film is arranged on one surface of the base glass, and then roughening treatment is carried out on the surface of the base glass, which is opposite to the protective film. And after the roughening treatment and before the heat treatment, removing the protective film, followed by subjecting the roughened glass to the heat treatment. It is understood that, during roughening treatment, the surface of the base glass on which the protective film is provided is not roughened, but the surface of the base glass on the side facing away from the protective film is roughened, and a single-sided antiglare roughened glass is formed after heat treatment. The protective film needs to be removed before the heat treatment, i.e., the heat treatment is performed on both surfaces of the roughened glass.
According to the preparation method of the anti-dazzle glass, firstly, the base glass with higher glossiness, chemical temperature property and thermal stability is prepared by regulating and controlling the proportion of raw materials; then, particles are separated out from the surface of the base glass through roughening treatment, so that a roughened surface with an anti-dazzle effect is formed, and specular reflection is effectively reduced; and then softening the roughened glass through heat processing treatment, increasing the surface tension of the roughened surface, further increasing the size of particles, and enabling the roughened surface to be flatter, so that diffuse reflection light generated on the surface of the anti-dazzle glass is more orderly, and the glossiness is increased. Therefore, the prepared anti-dazzle glass has higher glossiness and smoother surface when reaching an anti-dazzle effect, and can improve the visual effect and touch experience of the display device when being used for preparing the display device.
An embodiment of the present application provides an antiglare glass, which is manufactured according to the above method for manufacturing an antiglare glass.
In some embodiments, the antiglare glass has a 60 ° gloss of greater than or equal to 114%.
Finally, an embodiment of the present application also provides a display device, including the above antiglare glass. The display device includes, but is not limited to, a vehicle display screen, a mobile phone display screen, or a computer display screen.
In order to make the objects and advantages of the present application more apparent, the present application will be described in further detail with reference to examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. The following are specific examples.
Examples 1 to 13 and comparative examples 1 to 3 were dosed according to the components of tables 1 to 2, and after being mixed uniformly, they were placed in a platinum crucible and melted at 1550 to 1650℃for 6 hours while stirring with a platinum stirring paddle. And after the melting is finished, extracting the platinum stirring paddle, cooling to 1450-1550 ℃, preserving heat for 2h, and homogenizing to obtain glass liquid. The specific melting temperature and the specific cooling temperature can be selected by those skilled in the art according to the type, content, and other parameters of the raw materials. And then casting the glass liquid into an iron mold preheated to 500 ℃, transferring the obtained glass block into an annealing furnace for annealing for 6 hours after the glass liquid is hardened and formed, and cooling to obtain the blocky base glass. Cutting the blocky base glass into 70 x 140 x 1.1mm base glass sheets by using an STX-1203 wire cutting machine of Shenyang Ke-jingjingjingji, thinning and polishing the base glass sheets by using a Shenzhen Heiden HD-640-5L double-sided grinding polisher, and performing CNC edging processing.
Coating an acid-resistant film (specifically, a nan Ning acid-resistant film) on one surface of the processed basic glass sheet, and placing the glass substrate after film pasting in a volume ratio of 1:1 and 3vol% H 2 SO 4 The mixed solution is subjected to chemical etching treatment for 30s, and is washed for 90s by deionized water after the treatment is finished, and is dried for standby. Then, carrying out frosting treatment on the glass substrate by adopting a frosting powder liquid with the mass concentration of 55%, wherein the treatment time is 45s, cleaning the glass substrate for 60s by using deionized water after the treatment is finished, and drying the glass substrate for later use, wherein the frosting powder is fine-Ermei high-alumina glass frosting powder. Then the volume ratio is 1: 1% by volume of HF and 2% by volume of H 2 SO 4 The mixed solution of (2) carries out chemical polishing treatment on the glass substrate for 180s, and after the treatment is completed, deionized water is used for cleaning for 120s, and the glass substrate is dried for standby. The 60 ° gloss of the roughened surface of the base glass sheet after roughening treatment was tested with IQ 20/60/85 using a distinctness-of-image haze meter, and the test results are shown in tables 1 to 2.
The temperature and holding time of the heat treatment determined from the above test results of 60 ° gloss are shown in tables 1 to 2. The acid-resistant film on the base glass sheet was peeled off, and two quartz polishing sheets were placed on the opposite surfaces of the above base glass sheet, respectively, so that the base glass sheet was held in the two quartz polishing sheets, and then the three were placed together in a sigma box-type resistance furnace (model sgm.m12/12A). Then the temperature is raised to a preset temperature at a rate of 10 ℃/min, and then the heat preservation is carried out. And naturally cooling after the heat processing treatment to obtain the anti-dazzle glass. The roughened surface of the antiglare glass was tested for 60 ° gloss, and the test results are shown in tables 1 to 2.
Observing the surface particle conditions of example 1 after roughening treatment and after heat treatment by using a come-card polarization microscope DM2700P, wherein fig. 1 is a polarization microscope image of the surface of the roughened product, and fig. 2 is a partial enlarged view of fig. 1; fig. 3 is a polarizing microscope image of the roughened surface of the product after roughening treatment and heat treatment, and fig. 4 is a partially enlarged view of fig. 3. The dimensions in fig. 2 are: l:4.351 μm,2.L:4.485 μm,3.L:4.343 μm; the dimensions in fig. 4 are: l:5.087 μm,2.L:4.954 μm,3.L:5.259 μm. As can be seen from a comparison of fig. 1 and 3, the surface of the particles is smoother and the transition between the particles is smoother after the heat treatment. As can be seen from a comparison of fig. 2 and 4, the heat treatment increases the average particle diameter of the roughened surface particles.
TABLE 1
TABLE 2
Referring to tables 1 to 2, the antiglare glasses of examples 1 to 13 comprise, by mass: 55% -65% of SiO 2 12% -21% of Al 2 O 3 12 to 16 percent of Na 2 O, 2-5% MgO, 0-3% K 2 O,0 to 3% of Li 2 O,0 to 1.5 percent of ZrO,0 to 3 percent of B 2 O 3 0 to 1.5 percent of BaO and 0 to 2 percent of ZnO. And BaO, zrO 2 And ZnO, the sum of the mass percentages is not more than 5%; k (K) 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of (2) is not more than 5%. By adding BaO, zrO 2 、ZnO、K 2 O、Li 2 O and B 2 O 3 At least one of the above, improves the optical properties of the base glass, and improves the glossiness of the base glass sheet itself. After coarsening treatment, the base glass sheet realizes the anti-dazzle function. After the chemical polishing treatment, 60 ° gloss could reach 103%. After the heat treatment, the 60-degree glossiness is further improved. The display device prepared from the anti-dazzle glass has good visual effect.
The heat treatment temperature was lower in example 11 compared to example 5, and the 60 ° gloss of example 11 was still lower than example 5, although the hold time was prolonged; the heat treatment of example 12 was performed at a higher temperature than that of example 2, and although the 60 ° gloss was slightly higher than that of example 2, the surface had fine streaks, which resulted in distortion of images and visual effects when used for the production of a display device. The result shows that the glossiness of the product can be further improved when the preset temperature of the thermal processing treatment is 580-680 ℃.
Compared with example 8, the heat preservation time of example 13 is shorter, and the 60 DEG glossiness is lower than that of example 8, which indicates that the heat preservation time of the heat processing treatment is too short, and the flatness of the particle surface can not be effectively improved, the surface of the anti-dazzle glass is still rough, the glossiness of the product can be further improved when the heat processing treatment is less in improvement, namely, the heat preservation time of the heat processing treatment is 20-50 min.
Na in comparative example 1 2 O exceeds 16.0%, resulting in deterioration of thermal stability and chemical stability of the base glass; and no BaO, zrO as described above is added 2 、ZnO、K 2 O、Li 2 O and B 2 O 3 The base glass sheet itself had a poor glossiness of only 94% after roughening treatment and heat treatment. Comparative example 2 Al 2 O 3 And MgO content outside the range of the present application, the melting temperature of the glass raw material is high, so that the obtained base glass has propertiesDeterioration; and also does not add BaO, zrO as described above 2 、ZnO、K 2 O、Li 2 O and B 2 O 3 The base glass sheet itself had a poor gloss, and after subsequent processing, a 60 ° gloss of only 88%. In the raw material formulation of comparative example 3, baO, zrO 2 And ZnO with the mass percent of more than 5 percent, crystallization is easy to occur when the base glass is prepared, and the surface property of the base glass is changed, so that the frosting powder is not easy to adsorb during the frosting treatment, and the formed crystals are less, so that the glossiness of the comparative example is reduced, and the anti-dazzle effect is poor.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. The scope of the patent is, therefore, indicated by the appended claims, and the description may be used to interpret the contents of the claims.
Claims (10)
1. The preparation method of the anti-dazzle glass is characterized by comprising the following steps of:
melting and forming raw materials to prepare base glass;
coarsening one surface of the base glass to prepare coarsened glass;
carrying out heat processing treatment on the roughened glass to planarize the roughened surface of the roughening treatment, so as to prepare anti-dazzle glass;
wherein, the raw materials comprise the following components in percentage by mass:
and K is 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 0.2 to 5 percent, and ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-5%.
2. The method for producing an antiglare glass according to claim 1, wherein the Al 2 O 3 The mass percentage of (2) is 16.8-21%;
and/or, the Na 2 The mass percentage of O is 12-14.8%;
and/or, the mass percentage of MgO is 2.9% -5%;
and/or, the K 2 O、Li 2 O and B 2 O 3 The sum of the mass percentages of the components is 3.2% -5%;
and/or, the ZrO 2 The sum of the mass percentages of BaO and ZnO is 0.2-3.2%.
3. The method for producing an antiglare glass according to claim 1, wherein the roughening treatment comprises a chemical etching treatment, a frosting treatment and a chemical polishing treatment which are sequentially performed.
4. The method for producing an antiglare glass according to any one of claims 1 to 3, wherein the heat treatment comprises: and heating the coarsened glass and simultaneously performing pressing treatment.
5. The method for producing an antiglare glass according to claim 4, wherein the pressing treatment comprises the steps of:
and pressing pieces with smooth surfaces are respectively arranged on the two surfaces of the roughened glass, and the smooth surfaces are in contact with the roughened glass.
6. The method for producing an antiglare glass according to any one of claims 1 to 3, wherein the temperature of the heat treatment is 580 ℃ to 680 ℃;
and/or the heat preservation time of the thermal processing treatment is 20-50 min;
and/or the heating rate of the thermal processing treatment is 8-15 ℃/min.
7. The method for producing an antiglare glass according to claim 6, wherein the temperature of the heat treatment is 590 to 660 ℃.
8. The method for producing an antiglare glass according to any one of claims 1 to 3, further comprising: before the roughening treatment, a protective film is arranged on one surface of the base glass, and then the roughening treatment is carried out on the surface of one side of the base glass, which is opposite to the protective film; and removing the protective film after the roughening treatment and before the heat treatment, followed by subjecting the roughened glass to a heat treatment.
9. An antiglare glass, characterized in that the 60 ° gloss of the antiglare glass is 114% or more, which is produced according to the process for producing an antiglare glass according to any one of claims 1 to 8.
10. A display device comprising the antiglare glass according to claim 9.
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| CN117142762A (en) * | 2023-08-04 | 2023-12-01 | 清远南玻节能新材料有限公司 | Frosted glass, preparation method thereof and glass product |
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