Laminated glass and vehicle
By adjusting the thermal expansion coefficient of the ink masking layer to match that of the glass plate, the problem of laminated glass being prone to breakage during vehicle loading and driving was solved, thus improving the glass's impact resistance and product quality.
Patent Information
- Application Number
- CN202411077684.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2044-08-07
AI Technical Summary
Laminated glass is prone to cracking due to impact from stones during loading or driving, mainly because the thermal expansion coefficient of the ink masking layer does not match that of the inner and outer glass sheets, resulting in excessive mechanical stress.
By controlling the ratio of the thermal expansion coefficient of the ink masking layer to that of the inner and outer glass plates to 0.9~1.1, the composition and thickness of the ink masking layer are optimized, mechanical stress is reduced, and the strength of the masked area is improved.
It significantly improves the ability of laminated glass to resist stone impacts during loading or driving, thereby increasing product yield and impact resistance.
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Figure CN118876524B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicles, in particular to a laminated glass and a vehicle. BACKGROUND
[0002] The laminated glass of the vehicle is a safety glass, which combines the hardness of glass and the flexibility of plastic by inserting a transparent high-toughness plastic film between multiple layers of glass, significantly enhancing the impact resistance and safety of the glass when it breaks. When such glass is impacted, even if it breaks, it will remain intact due to the plastic film in the middle, thereby greatly reducing the risk of injury caused by flying glass fragments. Generally, the inner and outer glass plates of the laminated glass are heat-strengthened or semi-tempered glass, which is 2-4 times stronger than ordinary glass, meaning that under the same impact force, the glass is less likely to break. However, with the functional requirements of the laminated glass of the vehicle, in actual production, the problem of glass breakage of the laminated glass under the impact of stones on the road during driving or under the impact of the vehicle during installation is prone to occur. SUMMARY
[0003] Based on this, the first aspect of the present application provides a laminated glass, and the technical scheme is as follows:
[0004] A laminated glass, comprising an outer glass plate, an inner glass plate, a thermoplastic intermediate layer, and an ink shielding layer, the outer glass plate having a first surface and a second surface, the inner glass plate having a third surface and a fourth surface, the thermoplastic intermediate layer being located between the second surface and the third surface, and the ink shielding layer being located on at least one of the second surface, the third surface, and the fourth surface.
[0005] The coefficient of thermal expansion of the ink shielding layer is less than 90x10 -7 The ratio of the coefficient of thermal expansion of the ink shielding layer to the coefficient of thermal expansion of the outer glass plate or the inner glass plate is 0.9-1.1.
[0006] The second aspect of the present application provides a vehicle comprising the laminated glass as described above.
[0007] Compared with the traditional scheme, the present application has the following beneficial effects:
[0008] The inventors have found that the problem of glass breakage of the laminated glass under the impact of stones on the road during the process of loading and driving is related to the ink shielding layer of the laminated glass. Specifically, in order to functionalize the laminated glass, additional materials such as some conductive circuits, antenna covers, antenna connectors, etc. are usually arranged on the laminated glass. These additional materials are generally fixed on the edge of the laminated glass, and the ink shielding layer is used to shield and beautify these additional materials. The thermal expansion coefficient of the ink shielding layer is different from the thermal expansion coefficients of the inner and outer glass sheets of the laminated glass. During the cooling forming stage, the ink shielding layer generates certain mechanical stress on the inner and outer glass sheets, which can cause the strength of the region to decrease. Based on the above findings, the inventors have verified through experiments that, in the actual production process, the ratio relationship between the thermal expansion coefficient of the ink shielding layer and the thermal expansion coefficients of the inner and outer glass sheets is specified to improve the strength of the shielding region of the ink shielding layer after the laminated glass is formed, to improve the problem of glass breakage of the laminated glass under the impact of stones on the road during the process of loading and driving, and to improve the product yield. BRIEF DESCRIPTION OF DRAWINGS
[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, more completely understand the present application and its beneficial effects, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0010] Figure 1 Structure diagram of the laminated glass of an embodiment;
[0011] Figure 2 Structure diagram of the laminated glass of an embodiment; Figure 1 Structure diagram of the laminated glass of an embodiment; DETAILED DESCRIPTION
[0012] The present application will be further described in detail below in conjunction with specific embodiments. The present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application.
[0014] Terminology
[0015] Unless otherwise stated or contradictory, the terms or phrases used herein have the following meanings:
[0016] In the present application, "a plurality of", "a plurality of kinds", "a plurality of times", "a plurality of elements" and the like, if not specifically limited, refer to more than two or equal to two in number. For example, "one or more" means one or more than two.
[0017] In the present application, "several" means at least one, for example, one, two, etc., unless otherwise specifically limited.
[0018] In the present application, "optionally", "optional" and "optional" refer to the fact that it can or can not be present, i.e. it refers to any one selected from the two parallel schemes of "yes" or "no". If there are multiple "options" in a technical solution, unless otherwise specified, there is no contradiction or mutual restriction.
[0019] In the present application, in the terms "first aspect", "second aspect", "third aspect", "fourth aspect" and the like, the terms "first", "second", "third", "fourth" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or quantity, nor can it be understood as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first", "second", "third", "fourth" and the like only serve the purpose of non-exhaustive enumeration and description, and should be understood as not constituting a closed limitation on the quantity.
[0020] In the present application, with respect to the numerical interval (i.e. the numerical range), if not specifically stated, the optional numerical distribution within the above numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e. the minimum value and the maximum value) of the numerical range, as well as every numerical value between the two numerical endpoints.
[0021] In the present application, the temperature parameter, if not specifically limited, allows for constant temperature treatment, and also allows for variation within a certain temperature range. It should be understood that the constant temperature treatment allows the temperature to fluctuate within the accuracy range controlled by the instrument. It is allowed to fluctuate within the range of, for example, ±5°C, ±4°C, ±3°C, ±2°C, ±1°C.
[0022] In the present application, %(w / w) and wt% both represent weight percentage, %(v / v) refers to volume percentage, and %(w / v) refers to mass volume percentage.
[0023] The first aspect of the present application provides a laminated glass, in one embodiment, please refer to Figure 1 and Figure 2The laminated glass 100 comprises an outer glass sheet 11 having a first surface and a second surface, an inner glass sheet 12 having a third surface and a fourth surface, a thermoplastic interlayer 13 between the second surface and the third surface, and an ink shielding layer 14 on the second surface.
[0024] The coefficient of thermal expansion of the ink shielding layer is less than 90x10 -7 The ratio of the coefficient of thermal expansion of the ink shielding layer to the coefficient of thermal expansion of the outer glass sheet or the inner glass sheet is 0.9-1.1.
[0025] The ratio of the coefficient of thermal expansion of the ink shielding layer to the coefficient of thermal expansion of the outer glass sheet or the inner glass sheet is 0.9-1.1.
[0026] Further optionally, the ratio of the coefficient of thermal expansion of the ink shielding layer to the coefficient of thermal expansion of the outer glass sheet or the inner glass sheet is 0.95-1.05.
[0027] In the present embodiment, the ink shielding layer 14 is on the second surface. In other embodiments, the ink shielding layer 14 is on the third surface or the fourth surface. In the present embodiment, the ink shielding layer 14 is one layer, and in other embodiments, the ink shielding layer 14 is multiple layers. In the present application, the ink shielding layer 14 is on at least one of the second surface, the third surface, and the fourth surface.
[0028] The inventors have found that the problem of glass breakage of the laminated glass under the impact of stones on the road during the process of loading and driving is related to the ink shielding layer of the laminated glass. Specifically, in order to functionalize the laminated glass, additional materials such as some conductive circuits, antenna covers, antenna connectors, etc. are usually arranged on the laminated glass. These additional materials are generally fixed on the edge of the laminated glass, and the ink shielding layer is used to shield and beautify these additional materials. The thermal expansion coefficient of the ink shielding layer is different from the thermal expansion coefficients of the inner and outer glass sheets of the laminated glass. During the cooling forming stage, the ink shielding layer generates a certain mechanical stress on the inner and outer glass sheets, which can cause a decrease in the strength of the region. Based on the above findings, the inventors have verified through experiments that, in the actual production process, the ratio between the thermal expansion coefficient of the ink shielding layer and the thermal expansion coefficients of the inner and outer glass sheets is specified to improve the strength of the shielding region of the ink shielding layer after the laminated glass is formed, to improve the problem of glass breakage of the laminated glass under the impact of stones on the road during the process of loading and driving, and to improve the product yield.
[0029] Optionally, the region where the ink shielding layer is located is defined as a shielding region, and the breaking force of the laminated glass in the shielding region is ≥ 1500N. The breaking force refers to the force received by the laminated glass when it breaks in a double ring test. The double ring test is used to measure the strength of the glass, and the laminated glass is pressed by two devices from above and below until it breaks.
[0030] Optionally, the region where the ink shielding layer is located is defined as a shielding region, and a stainless steel ball with a weight of 28g and a diameter of 19mm is used to perform a ball drop impact test on the shielding region, and the ball drop height is greater than or equal to 700mm. The ball drop impact test refers to dropping a stainless steel ball with a weight of 28g and a diameter of 19mm from different heights, and allowing it to fall on the shielding region of the laminated glass, so that the shielding region of the laminated glass bears the impact of the falling ball. The ball drop height refers to the height at which the shielding region of the laminated glass is not broken under the impact of the falling ball. For example, the ball drop height is 700mm, which means that the glass can be guaranteed not to break under the impact of a ball falling from a height of 700mm.
[0031] Optionally, the elastic modulus of the ink shielding layer is 8GPa-10GPa. At this time, the elastic modulus of the ink shielding layer is relatively high, the impact strength is relatively high, and it is beneficial to improve the strength of the shielding area. The elastic modulus is the stiffness index of the material under stress, which represents the response ability of the material to stress. It reflects the degree of deformation of the material after being stressed. The larger the elastic modulus, the more difficult the material is to deform, and it has high stiffness. The ink shielding layer with high elastic modulus can protect the shielding area of the laminated glass from external impact or scratching to a certain extent. The elasticity of the ink shielding layer can absorb part of the external impact energy, reducing the impact on the surface of the laminated glass. This can improve the wear resistance and durability of the laminated glass. The market pays less attention to the elastic modulus of the ink shielding layer, resulting in that the elastic modulus of the ink shielding layer formed by the common ink is usually low, generally about 6GPa. The elastic modulus of the ink shielding layer in the embodiment is controlled to be 8GPa-10GPa, which is beneficial to improve the strength of the shielding area.
[0032] Optionally, the coefficient of thermal expansion of the ink shielding layer is 80x10 -7 ~87x10 -7 . The coefficient of thermal expansion of the ink shielding layer affects the strength of the shielding area.
[0033] In the embodiment, the outer glass plate and the inner glass plate can be heat-strengthened glass plates or semi-tempered glass plates obtained by physically heating and forming the float glass and then cooling. Optionally, the coefficients of thermal expansion of the outer glass plate and the inner glass plate are each independently 82x10 -7 ~89x10 -7 . For example, the coefficient of thermal expansion of transparent glass (white glass) is 82.6x10 -7 , the coefficient of thermal expansion of green glass (green glass) is 84.6x10 -7 , and the coefficient of thermal expansion of gray glass (gray glass) is 88.6x10 -7 .
[0034] The coefficient of thermal expansion of the common ink shielding layer on the market is between 90x10 -7 ~92x10 -7 , while in the embodiment, the coefficient of thermal expansion of the ink shielding layer is controlled to be 80x10 -7 ~87x10 -7 , so that the coefficient of thermal expansion of the ink shielding layer is close to the coefficients of thermal expansion of the outer glass plate and the inner glass plate. When the ink shielding layer, the outer glass plate and the inner glass plate are heated and thermally expanded, due to the close coefficient of thermal expansion, the thermal stress between the ink shielding layer, the outer glass plate and the inner glass plate is small when the temperature changes, which can improve the problem of glass cracking or breaking of the shielding area caused by large thermal stress. By controlling the coefficient of thermal expansion of the ink shielding layer to be 80x10-7 87 x 10 -7 It is beneficial to improve the strength of the shielding area.
[0035] It can be understood that the thermal expansion coefficient of the ink shielding layer is determined by the chemical composition of the ink. As the temperature rises, the amplitude of the thermal motion of the particles in the ink increases, overcoming the force between the particles, the distance between the particles increases, and the external performance is expansion. For the ink whose main component is oxide, the force between the particles is the bond force between various cations and oxygen ions 2Z / r2. The greater the bond force, the more difficult it is for the ink to expand, the smaller the thermal expansion coefficient, and vice versa. The bond strength between various cations and oxygen ions, Si-O has a relatively large bond strength, so generally, the greater the content of quartz glass in the ink, the smaller the expansion coefficient, however, the decrease of the content of quartz glass in the ink will reduce the sintering temperature of the ink, reduce the temperature difference between the ink and the glass after forming, and reduce the mechanical stress of the ink on the glass. In addition, in addition to SiO2, the content of alkali metal or alkaline earth metal in the ink will also affect the expansion coefficient of the ink, the greater the content of alkali metal or alkaline earth metal in the ink, the greater the expansion coefficient. The content of SiO2 in the ink of the present application is 30wt%-50wt%. Compared with the content of SiO2 in the traditional ink, which is 50wt%-60wt%, the content of SiO2 in the ink of the present application is less, so the minimum sintering temperature of the ink can be reduced to about 580°C.
[0036] In addition, among the bond forces between cations and oxygen ions, the bond strength of R-O is relatively weak, so the greater the content of alkali metal or alkaline earth metal in the ink, the greater the expansion coefficient. The proportion of alkaline earth metal oxide in the ink of the present application is within 30wt%. Compared with the content of alkaline earth metal oxide in the traditional ink, which is 30wt%-50wt%, therefore, in the ink of the present application, although the content of SiO2 is reduced, the content of alkaline earth metal oxide is also reduced, so that the overall thermal expansion coefficient of the ink can be controlled within a range more beneficial to the strength of the glass.
[0037] The order of the influence of alkali metal or alkaline earth metal oxides on the expansion coefficient of the ink is: Rb2O > Cs2O > K2O > Na2O > Li2O > Ba2O > SiO > Ca2O > ZnO > MgO > BeO. The higher the ranking, the stronger the R-O bond, and the less conducive to reducing the thermal expansion coefficient of the ink of the shielding layer. The above ranking can be referred to for selecting the oxides in the ink. The content of Na2O in the ink of the present application is 0-15wt%. In addition, the content of Bi2O3 in the ink of the present application is 25wt%-75wt%, and the content of Al2O3 is 3wt%-4wt%. In addition, from the overall structure of the ink shielding layer, the network skeleton of the ink shielding layer plays an important role in thermal expansion. Si-O forms a three-dimensional space network, which is not easy to expand due to its rigidity. B-O forms a BO3 layered or chain network, which is easy to expand. Therefore, the thermal expansion coefficient of the ink containing B2O3 is much larger than that of the ink containing SiO2. The content of B2O3 in the ink of the present application is 15wt%-20wt%. However, when BO3 is converted to BO4, it is beneficial to reduce the thermal expansion coefficient. Therefore, it is possible to try to convert BO3 in the ink containing B2O3 to BO4. At this time, the content of alkali metal or alkaline earth metal oxides in the ink needs to be controlled to avoid the disconnection of the BO4 network, which leads to an increase in the expansion coefficient. In summary, in the present embodiment, the formula components and contents of the ink can be selected according to the requirement that the thermal expansion coefficient of the ink shielding layer is 80x10 -7 ~87x10 -7
[0038] Optionally, the sintering temperature of the ink shielding layer is at least 580℃. Further optionally, the sintering temperature of the ink shielding layer is controlled to be 580℃-620℃. The sintering temperature of the ink shielding layer affects the strength of the shielding area. The formula components and contents of the ink can be selected according to the requirement that the sintering temperature of the ink shielding layer is 580℃-620℃.
[0039] In the commonly used ink on the market, the content of SiO2 is 50wt%-60wt%, and the content of alkaline earth metal oxides is 30wt%-50wt%. The required sintering temperature is 620℃-640℃. In the present embodiment, the content of SiO2 and alkaline earth metal oxides in the ink is changed, so that the content of SiO2 is 30wt%-50wt%, and the content of alkaline earth metal oxides is ≤30wt%. At this time, the range of sintering temperature can be increased to 580℃-620℃. After reducing the minimum sintering temperature of the ink, it is beneficial to reduce the forming temperature of the glass, reduce the temperature difference between the ink shielding layer and the outer glass plate and / or the inner glass plate after hot forming, and reduce the mechanical stress of the ink shielding layer on the outer glass plate and the inner glass plate.
[0040] Optionally, the content of boron oxide in the ink is increased to 15wt%~20wt% (the content of boron oxide in common ink is <15wt%), and the content of aluminum oxide is increased to 3wt%~4wt% (the content of aluminum oxide in common ink is <1wt%), so as to increase the elastic modulus of the ink shielding layer, improve the impact strength of the ink shielding layer, and further improve the strength of the shielding area of the laminated glass.
[0041] Optionally, the thickness of the ink shielding layer is 14μm~24μm. The above thickness can take into account the shielding performance of the ink shielding layer and the impact strength of the shielding area. Further optionally, the thickness of the ink shielding layer is 14μm~18μm.
[0042] It can be understood that the strength of the shielding area of the laminated glass is also related to the strength of the outer glass plate and the inner glass plate of the laminated glass. In the present embodiment, the outer glass plate and the inner glass plate can be a heat-strengthened glass plate or a semi-tempered glass obtained by physically heating and forming a float glass and then cooling. Optionally, the surface compressive stress of the outer glass plate and the inner glass plate is independently between 8MPa~64MPa. Among them, the surface compressive stress of the heat-strengthened glass plate is between 8MPa~20MPa, and the surface compressive stress of the semi-tempered glass plate is between 24MPa~64MPa. The edge tensile stress of the outer glass plate and the inner glass plate at the shielding area is independently ≤17.5MPa. Among them, the edge tensile stress of the heat-strengthened glass plate at the shielding area is ≤12MPa, and the edge tensile stress of the semi-tempered glass plate at the shielding area is ≤17.5MPa.
[0043] It can be understood that the thickness of the outer glass plate and the inner glass plate is independently between 0.5mm~3.0mm, which is not limited in the present application.
[0044] Optionally, the thickness of the thermoplastic interlayer is between 0.38mm~1.52mm, which is not limited in the present application.
[0045] Optionally, the material of the thermoplastic interlayer is selected from at least one of polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polycarbonate (PC), polyvinyl chloride (PVC), polyacrylate (PA), polymethyl methacrylate (PMMA), polyurethane (PUR), and ionomer film (SGP).
[0046] It can be understood that the present embodiment is a laminated glass.
[0047] The following is further illustrated in connection with specific examples and comparative examples, the raw materials involved in the following specific examples and comparative examples, if no special instructions, can be sourced from the market, the use of instruments, if no special instructions, can be sourced from the market, the process involved, if no special instructions, are routine selection for those skilled in the art.
[0048] Reference is made to Figure 1 and Figure 2 , the structure of the laminated glass is: 2.1mm gray glass (coefficient of thermal expansion is 88.6x10 -7 , outer glass plate) + 0.76mm PVB + 2.1mm gray glass (coefficient of thermal expansion is 88.6x10 -7 , inner glass plate), the ink shielding layer is sintered on the edge of the second surface according to the parameters in table 1 and table 2, the coefficient of thermal expansion of the ink shielding layer of the examples is 80x10 -7 ~87x10 -7 , the coefficient of thermal expansion of the ink shielding layer of the comparative examples is 90x10 -7 ~92x10 -7 , the thickness of the ink shielding layer is shown in table 1 and table 2.
[0049] The coefficient of thermal expansion of the ink shielding layer is tested, and the results are shown in table 1 and table 2.
[0050] According to the EN1288-5 standard, when the double ring test is tested, the area where the ink shielding layer is located is defined as the shielding area, and the shielding area of the laminated glass is subjected to pressure at a speed of 0.5mm / min, and the breaking force and average value are shown in table 1 and table 2.
[0051] The area where the ink shielding layer is located is defined as the shielding area, and the stainless steel ball with a weight of 28g and a diameter of 19mm is used to carry out the drop ball impact test on the shielding area, and the drop ball height is shown in table 1 and table 2.
[0052] Table 1
[0053]
[0054] Table 2
[0055]
[0056] As can be seen from table 1 and table 2, in the examples, the coefficient of thermal expansion of the ink shielding layer is less than 90x10 -7, and the ratio of the thermal expansion coefficient of the ink shielding layer to the thermal expansion coefficient of the inner and outer glass sheets is between 0.9 and 1.1, which can improve the strength of the shielding area, and in some further embodiments, the ratio of the thermal expansion coefficient of the ink shielding layer to the thermal expansion coefficient of the inner and outer glass sheets is between 0.95 and 1.05, which can further improve the problem that the laminated glass is prone to glass breakage under the impact of stones on the road during the process of vehicle beating or driving.
[0057] In the comparative examples, the thermal expansion coefficient of the ink shielding layer exceeds 90x10 -7 When the content of SiO2 in the ink is in the range of 50wt% to 60wt%, the sintering temperature of the ink is at least about 620℃, and because the cooling rates of the ink and the glass are inconsistent, the temperature difference between the ink and the glass is enlarged during the cooling process after the glass is formed at high temperature, which further causes the ink to generate mechanical stress on the glass and reduce the strength of the glass. Meanwhile, the content of the alkaline earth metal oxide is 30wt% to 50wt%, which can cause a large thermal stress between the ink and the glass during the temperature change process. This thermal stress can more easily cause the glass to crack or break.
[0058] In addition, in Tables 1 and 2 of the present application, the ink of the examples has a significant improvement in the performance of the compression resistance in the double ring test compared to the ink of the comparative examples by reducing the thickness of the ink layer. In the comparative examples, reducing the thickness of the ink can only obtain an improvement in the resistance breaking force of not more than 50N, while in the examples, the improvement in the resistance breaking force can reach at least 150N.
[0059] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.
[0060] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A laminated glass, characterized by, The laminated glass comprises an outer glass sheet, an inner glass sheet, a thermoplastic interlayer and an ink shielding layer, the outer glass sheet has a first surface and a second surface, the inner glass sheet has a third surface and a fourth surface, the thermoplastic interlayer is located between the second surface and the third surface, and the ink shielding layer is located on at least one of the second surface, the third surface and the fourth surface. The thermal expansion coefficient of the ink masking layer is 80 x 10 -7 -87 x 10 -7 -87 x 10 The coefficient of thermal expansion of the outer glass pane and the inner glass pane is each independently 82 x 10 -7 89 x 10 -7 .
2. The laminated glass according to claim 1, characterized by The ratio of the thermal expansion coefficient of the ink shielding layer to the thermal expansion coefficient of the outer glass sheet or the inner glass sheet is 0.95-1.
05.
3. The laminated glass according to claim 1, characterized by The area where the ink shielding layer is located is defined as a shielding area, and the breakage force of the laminated glass in the shielding area is ≥1500N.
4. The laminated glass according to claim 1, characterized by The area where the ink shielding layer is located is defined as a shielding area, and a stainless steel ball with a weight of 28g and a diameter of 19mm is used to perform a drop ball impact test on the shielding area, and the drop ball height is greater than or equal to 700mm.
5. The laminated glass according to claim 1, characterized by The elastic modulus of the ink shielding layer is 8GPa-10GPa.
6. The laminated glass according to any one of claims 1 to 5, characterized in that, The ink of the ink shielding layer comprises SiO2 and alkaline earth metal oxide, the proportion of SiO2 in the ink is 30wt%-50wt%, and the proportion of alkaline earth metal oxide in the ink is within 30wt%.
7. The laminated glass according to any one of claims 1 to 5, characterized in that, The ink of the ink shielding layer comprises boron oxide and aluminum oxide, the proportion of boron oxide in the ink is 15wt%-20wt%, and the proportion of aluminum oxide in the ink is 3wt%-4wt%.
8. The laminated glass according to any one of claims 1 to 5, characterized in that, The sintering temperature of the ink shielding layer is at least 580℃.
9. The laminated glass according to any one of claims 1 to 5, characterized in that, The thickness of the ink shielding layer is 14μm-24μm.
10. The laminated glass according to claim 9, characterized by The thickness of the ink shielding layer is 14μm-18μm.
11. The laminated glass according to any one of claims 1 to 5, characterized in that, The surface compressive stress of the outer glass sheet and the inner glass sheet is independently between 8MPa and 64MPa, the area where the ink shielding layer is located is defined as a shielding area, and the edge tensile stress in the shielding area is independently ≤17.5MPa.
12. A vehicle characterized by comprising: The laminated glass comprises any one of claims 1-11.
Citation Information
Patent Citations
Laminated glass with low HIC value and preparation method thereof
CN116476471A
Vehicle window glass and manufacturing method therefor, vehicle laminated glass, and vehicle windshield
US20240246321A1