Composite glaze layer, glazed glass, photovoltaic module and vehicle

Abstract

The invention provides a composite glaze layer, glazed glass, a photovoltaic module and a vehicle, the composite glaze layer is arranged on base material glass and comprises a protective layer and at least one functional layer, the protective layer covers the surface and the side face of the functional layer, and the tail end of the protective layer is in contact with the surface of the base material glass; wherein the proportion of the dense contact area between the protective layer and the surface of the base material glass to the total area of the composite glaze layer is not higher than 25%. In the composite glaze layer, the protective layer mainly plays a role in blocking and protecting the functional layer so as to ensure the reliability of the whole composite glaze layer structure. Meanwhile, the dense connection between the protective layer and the base material glass only exists around the pattern, so that the dense contact area between the composite glaze layer and the base material glass is reduced to the greatest extent, and the design that the glaze layer coverage area is the dense contact area in the prior art is changed; the probability of glass stress damage and load reduction under a dense contact area is reduced, so that the strength and the safety of the glazed glass can be improved.

Description

Technical Field

[0001] The invention relates to a composite glaze layer, glazed glass, a photovoltaic component and a vehicle, and belongs to the technical field of materials. Background Art

[0002] At present, glass glazes are all made of high-temperature glass inks that are screen-printed and then dried and tempered to form a single-layer structure. Due to the presence of low-melting-point glass powder in glass inks, it is difficult for the formed glass glaze to balance functionality, reliability and safety. Moreover, as glass continues to become thinner and larger, the impact of high-temperature glass inks on glass loads becomes more and more prominent.

[0003] For the reflective ceramic ink used for photovoltaic glass backplane, as the size of the backplane glass continues to increase and the thickness of the glass continues to decrease, the original reflective glaze has an increasing impact on the glass load. The main reason is that it is difficult for a single layer of glaze and glass to be tempered in the furnace while taking into account other properties, and the contact area between the two is equivalent to the grid pattern, accounting for 9-15% of the total area. In addition to the stress imbalance caused by the mismatch of material expansion, the glass glaze in these areas also has the problem of micro-cracks on the glass surface expanding due to factors such as inconsistent tempering of the glass below the glaze layer and corrosion of low-melting-point glass powder, which in turn affects the load strength of the glass.

[0004] As for automotive glass ink, black glass ink is applied around the car windows. In addition to being beautiful, it also has the functions of preventing ultraviolet rays from penetrating and preventing the glass from reacting with the glue that bonds the car body. However, with the rise of new energy vehicles, the size of car window glass, sunroof glass, etc. has continued to increase, and the thickness of the glass is still decreasing in conjunction with the weight reduction of the car body. During the tempering process, the black glass ink itself will aggravate the damage of the low-melting-point glass powder in the ink to the base glass due to its heat absorption characteristics, causing the glass to crack and break. The main reason is that the contact area between the low-melting-point glass powder in the glass ink and the base glass is too large during the tempering process, resulting in random stress weak points under a large area. When disturbed by external factors, safety problems such as breakage occur.

[0005] Therefore, providing a new type of composite glaze layer, glazed glass, photovoltaic module and vehicle has become a technical problem that urgently needs to be solved in the field. Summary of the invention

[0006] In order to solve the above shortcomings and deficiencies, the purpose of the present invention is to provide a composite glaze layer, glazed glass, photovoltaic module and vehicle. The composite glaze layer provided by the present invention includes a protective layer and at least one functional layer, wherein the functional layer only performs core functions, and the protective layer protects the reliability of the entire layer structure and the safety of the glass.

[0007] In order to achieve the above objectives, on the one hand, the present invention provides a composite glaze layer, which is arranged on a substrate glass, wherein the composite glaze layer includes a protective layer and at least one functional layer, the protective layer covers the surface and side of the functional layer and the end of the protective layer is in contact with the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass to the total area of ​​the composite glaze layer is not higher than 25%.

[0008] As a specific embodiment of the composite glaze layer described above in the present invention, the functional layer includes one or a combination of a white reflection enhancing layer, a black beautifying layer, a color changing layer and an insulating layer.

[0009] As a specific embodiment of the composite glaze layer described above in the present invention, when the functional layer includes a white reflection enhancing layer, a black beautifying layer or a color changing layer, the content of the colorant in the functional layer is greater than 30% based on the total weight of the functional layer as 100%.

[0010] As a specific embodiment of the composite glaze layer of the present invention, the protective layer is a dense glass glaze layer. In the present invention, the protective layer of the composite glaze layer is a dense glass glaze layer, which has excellent water vapor barrier properties and electrical insulation properties.

[0011] As a specific embodiment of the composite glaze layer described above in the present invention, the pencil hardness of the protective layer is greater than 6H, and the hundred-grid strength is less than or equal to level 1.

[0012] As a specific embodiment of the composite glaze layer described above in the present invention, the melting point of the glass powder in the dense glass glaze layer is 450-550°C.

[0013] As a specific embodiment of the composite glaze layer described above in the present invention, the ratio of the compact contact area between the protective layer and the surface of the substrate glass to the total area of ​​the composite glaze layer is 1-25%, preferably 5-10%.

[0014] As a specific embodiment of the composite glaze layer described above in the present invention, the thickness of the composite glaze layer is 15-30 μm, preferably 20-25 μm.

[0015] As a specific embodiment of the composite glaze layer described above in the present invention, the thickness of the protective layer accounts for 1 / 4-1 / 2 of the total thickness of the composite glaze layer, preferably 1 / 3, and the thickness of the functional layer accounts for 1 / 2-3 / 4 of the total thickness of the composite glaze layer.

[0016] As a specific embodiment of the composite glaze layer described above in the present invention, there are clear boundaries between the protective layer and the functional layer, and between the functional layer and the surface of the substrate glass.

[0017] The composite glaze layer of the present invention can be manufactured by a variety of different manufacturing methods. In order to further illustrate the composite glaze layer of the present invention, the present invention also provides a method for manufacturing the composite glaze layer described above, which comprises the following steps:

[0018] Step (1): according to the material of the protective layer, uniformly mixing the first raw material and the first varnish to obtain a first slurry;

[0019] Step (2): according to the function and material of the functional layer, the second raw material and the second varnish are mixed evenly to obtain a second slurry;

[0020] Step (3): coating the second slurry and the first slurry on the substrate glass in sequence, and then forming a composite glaze layer on the substrate glass after furnace tempering.

[0021] In step (1) of the above-mentioned manufacturing method of the present invention, those skilled in the art can reasonably select the first raw material according to the specific material of the protective layer. For example, when the protective layer is a dense glass glaze layer, the first raw material can be glass powder, preferably low-melting point glass powder.

[0022] In step (2) of the above-mentioned manufacturing method of the present invention, those skilled in the art can reasonably select the second raw material according to the specific function and specific material of the functional layer. For example, the second raw material can be a high temperature resistant inorganic color pigment or a black pigment (such as copper chromium black, manganese iron black, etc.).

[0023] The first varnish and the second varnish used in step (1) and step (2) of the above-described production method of the present invention are both conventional substances and can be reasonably selected according to needs; and the first varnish and the second varnish can be the same or different, and are preferably the same.

[0024] In step (3) of the above-mentioned manufacturing method of the present invention, the coating includes printing, roller coating or spraying, etc. In some embodiments of the present invention, the printing includes screen printing, overprinting and other printing methods.

[0025] In step (3) of the above-mentioned manufacturing method of the present invention, the temperature of the furnace tempering is 690-740° C. and the time is 90-115 seconds.

[0026] Since the composite glaze layer provided by the present invention has a composite layer structure, the structure is more reasonable, so that the sintering window is wider, and during the furnace tempering process, the tempering characteristics and tempering process of the base glass itself will not be affected.

[0027] On the other hand, the present invention further provides a glazed glass, comprising a substrate glass and a glaze layer disposed on the surface thereof, wherein the glaze layer is the composite glaze layer described above.

[0028] In yet another aspect, the present invention further provides a photovoltaic module, wherein the back panel glass of the photovoltaic module is the glazed glass described above.

[0029] In yet another aspect, the present invention further provides a vehicle, wherein the window glass and / or sunroof glass of the vehicle is the glazed glass described above.

[0030] The composite glaze layer provided by the present invention includes a protective layer and at least one functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass to the total area of ​​the composite glaze layer is not higher than 25%. wherein the functional layer only undertakes the core function, and the specific material of the functional layer can be reasonably selected as needed to ensure that it can realize the corresponding function. the protective layer mainly plays a barrier and protective role for the functional layer to ensure the reliability of the entire composite glaze layer structure. at the same time, the dense connection between the protective layer and the substrate glass only exists in the figure, that is, around the composite glaze layer, which reduces the dense contact area between the composite glaze layer and the substrate glass to the greatest extent, changes the design in the prior art that the glaze layer covering area is the dense contact area, reduces the probability of glass stress damage and load reduction under the dense contact area, thereby improving the strength and safety of the glazed glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a simplified schematic diagram of the structure of the glazed glass provided in Example 1 of the present invention.

[0033] Description of main figures:

[0034] 1. Protective layer;

[0035] 2. Functional layer;

[0036] 3. Base material glass. DETAILED DESCRIPTION

[0037] It should be noted that the term "comprises" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] "Scope" disclosed in the present invention is given in the form of lower limit and upper limit. It can be one or more lower limits, and one or more upper limits respectively. A given range is defined by selecting a lower limit and an upper limit. The selected lower limit and upper limit define the boundaries of a particular range. All ranges defined in this way are combinable, i.e. any lower limit can be combined with any upper limit to form a range. For example, for a specific parameter, a range of 60-120 and 80-110 is listed, and it is understood that a range of 60-110 and 80-120 is also expected. In addition, if the minimum range values ​​listed are 1 and 2, and the maximum range values ​​listed are 3, 4 and 5, then the following ranges can all be expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5.

[0039] In the present invention, unless otherwise specified, the numerical range "ab" represents an abbreviation of any real number combination between a and b, where a and b are real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" have been listed in the present invention, and "0-5" is just an abbreviation of these numerical combinations.

[0040] In the present invention, unless otherwise specified, all embodiments and preferred embodiments mentioned in the present invention can be combined with each other to form a new technical solution.

[0041] In the present invention, unless otherwise specified, all technical features and preferred features mentioned in the present invention can be combined with each other to form a new technical solution.

[0042] In the present invention, unless otherwise specified, all steps mentioned herein may be performed sequentially or randomly, but are preferably performed sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order, for example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0043] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the attached table, drawings and examples. The following described embodiments are some embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention. If the specific conditions are not specified in the embodiments, they are carried out according to the normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0044] The "thickness" in the present invention means "average thickness".

[0045] In the present invention, the ratio of the compact contact area between the protective layer and the substrate glass surface to the total area of ​​the composite glaze layer (denoted as S) is calculated according to the following formula 1):

[0046] S=(S0-S1) / S0×100% formula 1);

[0047] In formula 1), S1 is the coating area of ​​the functional layer, S0 is the coating area of ​​the protective layer, that is, the total area of ​​the composite glaze layer, and the units of S1 and S0 are the same.

[0048] Example 1

[0049] This embodiment provides a glazed glass, and its structural schematic diagram is as follows Figure 1 As shown, from Figure 1 It can be seen that the glazed glass includes a substrate glass 3 and a composite glaze layer arranged on the surface of the substrate glass 3, the composite glaze layer includes a protective layer 1 and a functional layer 2, the protective layer 1 covers the surface and side of the functional layer 2 and the end of the protective layer 1 is in contact with the surface of the substrate glass 3; wherein the proportion of the dense contact area between the protective layer 1 and the surface of the substrate glass 3 accounts for 6% of the total area of ​​the composite glaze layer; there are clear boundaries between the protective layer 1 and the functional layer 2 and between the functional layer 2 and the surface of the substrate glass 3;

[0050] The protective layer 1 is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 475-525°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer 1 is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0051] The functional layer 2 is a layer of color pigments (high temperature resistant inorganic pigments, such as titanium dioxide, copper chromium black, iron black, cobalt blue or cobalt green, etc.), and its material stacking is obviously loose compared with the protective layer 1; the functional layer 2 mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer 2 is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer 2 being 100%, the content of the color pigments in the functional layer 2 is greater than 30%;

[0052] The substrate glass 3 is ultra-white float glass with a thickness of 3.2 mm.

[0053] In order to more fully introduce the glazed glass, this embodiment also provides a method for making the glazed glass, which includes the following specific steps:

[0054] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0055] Step (2): uniformly mixing the color pigment and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0056] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0057] Example 2

[0058] This embodiment provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 10% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0059] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 475-525°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0060] The functional layer is a color pigment (high temperature resistant inorganic pigment) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0061] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0062] In order to more fully introduce the glazed glass, this embodiment also provides a method for making the glazed glass, which includes the following specific steps:

[0063] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0064] Step (2): uniformly mixing the color pigment and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0065] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0066] Example 3

[0067] This embodiment provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 15% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0068] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 460-550°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0069] The functional layer is a black pigment (copper chromium black, manganese iron black, etc.) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0070] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0071] In order to more fully introduce the glazed glass, this embodiment also provides a method for making the glazed glass, which includes the following specific steps:

[0072] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0073] Step (2): uniformly mixing the black colorant and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0074] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0075] Example 4

[0076] This embodiment provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 25% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0077] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 475-525°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0078] The functional layer is a color pigment (high temperature resistant inorganic pigment) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0079] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0080] In order to more fully introduce the glazed glass, this embodiment also provides a method for making the glazed glass, which includes the following specific steps:

[0081] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0082] Step (2): uniformly mixing the black colorant and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0083] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0084] Comparative Example 1

[0085] This comparative example provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 75% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0086] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 475-525°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0087] The functional layer is a color pigment (high temperature resistant inorganic pigment) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0088] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0089] In order to more fully introduce the glazed glass, this comparative example also provides a method for making the glazed glass, which includes the following specific steps:

[0090] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0091] Step (2): uniformly mixing the color pigment and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0092] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0093] Comparative Example 2

[0094] This comparative example provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 75% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0095] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 460-550°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0096] The functional layer is a black pigment (copper chromium black, manganese iron black, etc.) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0097] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0098] In order to more fully introduce the glazed glass, this comparative example also provides a method for making the glazed glass, which includes the following specific steps:

[0099] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0100] Step (2): uniformly mixing the black colorant and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0101] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0102] Comparative Example 3

[0103] This comparative example provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 45% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0104] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 460-550°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0105] The functional layer is a black pigment (copper chromium black, manganese iron black, etc.) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0106] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0107] In order to more fully introduce the glazed glass, this comparative example also provides a method for making the glazed glass, which includes the following specific steps:

[0108] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0109] Step (2): uniformly mixing the black colorant and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0110] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0111] Comparative Example 4

[0112] This comparative example provides a glazed glass, wherein the glazed glass comprises a substrate glass and a composite glaze layer disposed on the surface of the substrate glass, wherein the composite glaze layer comprises a protective layer and a functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass accounts for 60% of the total area of ​​the composite glaze layer; and there are clear boundaries between the protective layer and the functional layer and between the functional layer and the surface of the substrate glass;

[0113] The protective layer is a dense, high-hardness continuous glass glaze layer, i.e., a low-melting-point glass powder (Tg is 460-550°C) accumulation layer, which mainly protects the entire composite glaze layer structure. The thickness of the protective layer is 8 μm, accounting for 1 / 3 of the total thickness of the composite glaze layer.

[0114] The functional layer is a black pigment (copper chromium black, manganese iron black, etc.) accumulation layer, and its material accumulation is obviously loose compared with the protective layer; the functional layer mainly provides the basic color change, mainly diffuse reflection; the thickness of the functional layer is 16 μm, accounting for 2 / 3 of the total thickness of the composite glaze layer; based on the total weight of the functional layer as 100%, the content of the color pigment in the functional layer is greater than 30%;

[0115] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0116] In order to more fully introduce the glazed glass, this comparative example also provides a method for making the glazed glass, which includes the following specific steps:

[0117] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0118] Step (2): uniformly mixing the black colorant and the second varnish (commercially available conventional varnish) to obtain a second slurry;

[0119] Step (3): The second slurry and the first slurry are applied to form a grid on the surface of the substrate glass by silk screen overprinting, and then tempered in a furnace at 690-740° C. for 90-115 seconds to form a composite glaze layer on the substrate glass.

[0120] Comparative Example 5

[0121] This comparative example provides a glazed glass, wherein the glazed glass comprises a substrate glass and a glaze layer arranged on the surface of the substrate glass, the glaze layer is a dense and high-hardness continuous glass glaze layer, that is, a low-melting-point glass powder (Tg is 475-525° C.) accumulation layer, which mainly plays a protective role; the thickness of the glaze layer is 24 μm; the ratio of the dense contact area between the glaze layer and the surface of the substrate glass to the total area of ​​the glaze layer is 100%, that is, the glaze layer itself is in contact with the surface of the substrate glass;

[0122] Wherein, the substrate glass is float ultra-white glass with a thickness of 3.2 mm.

[0123] In order to more fully introduce the glazed glass, this comparative example also provides a method for making the glazed glass, which includes the following specific steps:

[0124] Step (1): uniformly mixing a low-melting-point glass powder and a first varnish (commercially available conventional varnish) to obtain a first slurry;

[0125] Step (2): Printing the first slurry on the surface of the substrate glass to form a grid, and then tempering it in a furnace at 690-740° C. for 90-115 seconds to form a glaze layer on the substrate glass.

[0126] Test Example 1

[0127] In this test example, the glazed glass provided by Examples 1 to 4 of the present invention and the glazed glass provided by Comparative Examples 1 to 5 are tested for falling ball impact height. The falling ball impact height test uses a plastic sleeve and a 227 g steel ball. The test starts from 0.6 m and is gradually increased with an interval of 50 mm.

[0128] In this test example, the impact height (glass load) test results of the glazed glass provided by Examples 1 to 4 of the present invention and Comparative Examples 1 to 5 are shown in Table 1 below.

[0129] Table 1

[0130]

[0131]

[0132] From the drop ball impact height test results shown in Table 1 above, it can be seen that the drop ball impact height of the glazed glass provided by Example 1 of the present invention is close to that of a bare chip, the blank area of ​​the printed surface is 1.8m; the T-shaped part of the non-screen printed surface is 1.6m, and the cross part in the middle is 1.4m. The load of the glass itself is not greatly affected.

[0133] The falling ball impact height of the glazed glass provided by Example 2 of the present invention also meets the requirements, specifically, the blank area of ​​the printed surface is 1.6m, the T-shaped part of the non-screen printed surface is 1.4m, and the middle cross part is 1.2m. The load of the glass itself has little effect.

[0134] The falling ball impact height of the glazed glass provided by Example 3 of the present invention is close to that of a bare chip, the blank area of ​​the printed surface is 1.7m, the T-shaped part of the non-screen printed surface is 1.5m, and the cross part in the middle is 1.2m. The load of the glass itself is not greatly affected.

[0135] The falling ball impact height of the glazed glass provided by Example 4 of the present invention can also meet the requirements, specifically, the blank area of ​​the printed surface is 1.4m; the T-shaped part of the non-screen printed surface is 1.3m, and the middle cross part is 1.1m. The load of the glass itself has little effect.

[0136] The drop ball impact height of the glazed glass provided in Comparative Example 1 does not meet the requirements, specifically, the blank area of ​​the printed surface is 0.9m, the T-shaped part of the non-screen printed surface is 0.8m, and the cross part in the middle is 0.6m. The load of the glass itself has a greater impact.

[0137] The drop ball impact height of the glazed glass provided in Example 2 also does not meet the requirements, specifically, the blank area of ​​the printed surface is 0.8m, the T-shaped portion of the non-screen printed surface is 0.7m, and the cross portion in the middle is 0.5m. The load of the glass itself has a greater impact.

[0138] The drop ball impact height of the glazed glass provided in Example 3 also does not meet the requirements, specifically, the blank area of ​​the printed surface is 0.8m, the T-shaped portion of the non-screen printed surface is 0.7m, and the cross portion in the middle is 0.6m. The load of the glass itself has a great influence.

[0139] The drop ball impact height of the glazed glass provided in Example 4 also does not meet the requirements, specifically, the blank area of ​​the printed surface is 0.6m, the T-shaped portion of the non-screen printed surface is 0.5m, and the cross portion in the middle is 0.4m. The load of the glass itself has a great influence.

[0140] The drop ball impact height of the glazed glass provided in Example 5 also does not meet the requirements. Specifically, the blank area of ​​the printed surface is 0.6m, the T-shaped portion of the non-screen printed surface is 0.5m, and the cross portion in the middle is 0.3m. The load of the glass itself has a great influence.

[0141] Compared with the glazed glass provided in Examples 1 to 2 and 4 of the present invention, in the glazed glass provided in Comparative Example 1, the dense contact area between the protective layer and the surface of the substrate glass accounts for a higher proportion of the total area of ​​the composite glaze layer. By comparing the impact height test results of these glazed glasses, it can be seen that the strength of the glazed glass provided in Comparative Example 1 is poor and does not meet the requirements.

[0142] Compared with the glazed glass provided in Example 3 of the present invention, in the glazed glass provided in Comparative Examples 2 to 4, the dense contact area between the protective layer and the surface of the substrate glass accounts for a higher proportion of the total area of ​​the composite glaze layer. By comparing the impact height test results, it can be seen that the strength of the glazed glass provided in Comparative Example 2 is poor and does not meet the requirements.

[0143] Compared with the glazed glass provided by Examples 1 to 4 of the present invention and Comparative Examples 1 to 2, the glazed glass provided by Comparative Example 5 has only a protective layer but no functional layer, and the protective layer is in full contact with the substrate glass. By comparing the impact height test results, it can be seen that the strength of the glazed glass provided by Comparative Example 5 is worse than that of the glazed glass provided by Comparative Examples 1 and 2, and naturally worse than that of the glazed glass provided by Examples 1 to 4 of the present invention.

[0144] Example 5

[0145] This embodiment provides a series of photovoltaic modules, wherein the back panel glass of this series of photovoltaic modules is the glazed glass provided in Embodiment 1 to Embodiment 2 and Embodiment 4 respectively.

[0146] In an embodiment of the present invention, the glaze layer on the surface of the back glass of the photovoltaic module is a composite glaze layer, and the composite glaze layer includes a functional layer and a protective layer. This design can enable the composite glaze layer and the substrate glass to be consistently tempered in the furnace, and can minimize the dense contact area between the composite glaze layer and the substrate glass. The dense contact area can even be reduced to less than 10% of the figure, that is, the total area of ​​the composite glaze layer, thereby reducing the glass load damage caused by the difference in material properties between the two.

[0147] Example 6

[0148] This embodiment provides a vehicle, wherein the window glass and / or skylight glass of the vehicle is the glazed glass provided in Embodiment 3. Since the composite glaze layer in the glazed glass provided in Embodiment 3 of the present invention contains a specific functional layer, the glazed glass can be used as the window glass and / or skylight glass of the vehicle.

[0149] In an embodiment of the present invention, the glaze layer on the surface of the vehicle's window glass and / or sunroof glass is a composite glaze layer, which includes a functional layer and a protective layer. This design allows the composite glaze layer to have functions such as aesthetics, acid resistance, and anti-stickiness while minimizing the dense contact between the composite glaze layer and the substrate glass, thereby reducing the influence of the composite glaze layer on the strength of the substrate glass.

[0150] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the patent of the present invention, should still fall within the scope of this patent. In addition, the technical features of the present invention can be freely combined with each other, with each other and with each other, and with each other.

Claims

1. A composite glaze layer, which is arranged on a substrate glass, It is characterized in that The composite glaze layer includes a protective layer and at least one functional layer, wherein the protective layer covers the surface and side of the functional layer and the end of the protective layer contacts the surface of the substrate glass; wherein the proportion of the dense contact area between the protective layer and the surface of the substrate glass to the total area of ​​the composite glaze layer is not higher than 25%.

2. The composite glaze layer according to claim 1, It is characterized in that The functional layer includes one or a combination of a white reflection enhancing layer, a black beautifying layer, a color changing layer and an insulating layer.

3. The composite glaze layer according to claim 2, It is characterized in that When the functional layer includes a white reflection-enhancing layer, a black beautifying layer or a color-changing layer, the content of the colorant in the functional layer is greater than 30%, based on the total weight of the functional layer being 100%.

4. The composite glaze layer according to claim 1, It is characterized in that The protective layer is a dense glass glaze layer.

5. The composite glaze layer according to claim 4, It is characterized in that The protective layer has a pencil hardness greater than 6H and a hundred-grid strength less than or equal to level 1.

6. The composite glaze layer according to claim 4, It is characterized in that The melting point of the glass powder in the dense glass glaze layer is 450-550°C.

7. The composite glaze layer according to claim 1, It is characterized in that The proportion of the dense contact area between the protective layer and the surface of the substrate glass to the total area of ​​the composite glaze layer is 1-25%, preferably 5-10%.

8. The composite glaze layer according to any one of claims 1 to 7, It is characterized in that The thickness of the composite glaze layer is 15-30 μm, preferably 20-25 μm.

9. The composite glaze layer according to any one of claims 1 to 7, It is characterized in that The thickness of the protective layer accounts for 1 / 4-1 / 2 of the total thickness of the composite glaze layer, and the thickness of the functional layer accounts for 1 / 2-3 / 4 of the total thickness of the composite glaze layer.

10. The composite glaze layer according to any one of claims 1 to 7, It is characterized in that There are clear boundaries between the protective layer and the functional layer, and between the functional layer and the surface of the substrate glass.

11. A glazed glass comprising a substrate glass and a glaze layer arranged on the surface thereof, It is characterized in that The glaze layer is the composite glaze layer according to any one of claims 1 to 10.

12. A photovoltaic module, It is characterized in that The back panel glass of the photovoltaic module is the glazed glass as described in claim 11.

13. A vehicle, It is characterized in that The window glass and / or sunroof glass of the vehicle is the glazed glass according to claim 11.

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