CN115448583A

CN115448583A - Glass assembly, preparation method thereof and vehicle

Info

Publication number: CN115448583A
Application number: CN202211264206.6A
Authority: CN
Inventors: 王哲; 唐自清; 陈碧珠; 王立
Original assignee: Fuyao Glass Industry Group Co Ltd
Current assignee: Fuyao Glass Industry Group Co Ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2022-12-09
Anticipated expiration: 2042-10-14
Also published as: CN115448583B

Abstract

The application provides a glass component, a preparation method thereof and a vehicle. The glass assembly comprises an intermediate layer, a first glass plate and a second glass plate, wherein the first glass plate and the second glass plate are respectively arranged on two opposite sides of the intermediate layer. The first glass plate has a window portion and an edge portion disposed around the window portion, and a surface compressive stress of the window portion is smaller than a surface compressive stress of the edge portion. This application is through making according to window part and the characteristics that different when marginal portion received the striking, optimizes the surface compressive stress in two districts respectively, makes first glass board have the different window part and marginal portion of surface compressive stress, and the surface compressive stress of window part is less than marginal portion's surface compressive stress to make glass subassembly satisfy people's head model test, the operation guarantee is experimental simultaneously, and have sufficient anti flying stone impact property and adhesive strength.

Description

Glass assembly, preparation method thereof and vehicle

Technical Field

The application belongs to the technical field of glass, and particularly relates to a glass assembly, a preparation method of the glass assembly and a vehicle.

Background

With the increasing demands of people on the active safety and passive safety performance of automobiles, the demands on the safety performance of automobile glass are also increasing. However, the current automobile glass cannot simultaneously meet the human head model test and the traffic insurance test, and has enough flyrock impact resistance and bonding strength.

Disclosure of Invention

In view of this, a first aspect of the present application provides a glass assembly comprising an interlayer, a first glass sheet, and a second glass sheet, the first glass sheet and the second glass sheet being disposed on opposite sides of the interlayer, respectively;

the first glass plate is provided with a window part and an edge part arranged around the window part, and the surface compressive stress of the window part is smaller than that of the edge part.

The glass assembly that this application first aspect provided is mutually supported by first glass board, second glass board, and intermediate level to make glass assembly satisfy people's head mould test, row's guarantor's test simultaneously, and have sufficient resistant flying stone impact property and adhesive strength. The first glass plate is provided with a window part and an edge part, wherein the window part refers to an area which is seen far away by a user through the glass and can also be understood as a central area of the glass; the edge portion refers to an area for bonding other components to the glass, and may also be understood as a peripheral area of the glass.

Specifically, in the first glass plate, the surface compressive stress of the window portion is smaller than the surface compressive stress of the edge portion. First, when the glass assembly encounters an external impact, for example: flying stone impact, pedestrian impact, head impact and the like, and the possibility of external impact is high due to the fact that the window part is arranged in the center of the first glass plate. However, because the surface compressive stress of the window part in the first glass plate provided by the application is smaller, the energy absorption and buffering capacity of the glass of the window part when the glass is impacted by a blunt object at a high speed is improved, the damage to people caused by violent collision is reduced, and the capacity of the glass of the window part to resist sharp objects such as flying stones and the like and prevent breakage under low-energy impact is improved.

Secondly, when the glass assembly is hit by external impact, the components adhered to the glass are easy to fall off, and even the glass is broken. However, since the surface compressive stress of the edge portion of the first glass plate provided by the present application is large, the adhesion strength between the glass and the member in the edge portion is large, and the probability of dropping the member can be reduced, thereby reducing the probability of glass breakage and splashing.

Compared with glass components with the same surface compressive stress of the window part and the edge part in the related technology, the glass component has the advantages that the surface compressive stress of the two areas is optimized respectively according to different characteristics when the window part and the edge part are impacted, so that the surface compressive stress of the window part is smaller than that of the edge part, the energy absorption and buffering capacity of the glass of the window part under high-speed impact of a blunt object is improved, the damage to people caused by severe collision is reduced, and the capacity of the glass of the window part to resist sharp objects such as flying stones and the like and not to break under low-energy impact is improved; and also to provide the glass of the edge portion with sufficient adhesive strength so that the glass assembly satisfies both the mannequin test and the underwriting test and has sufficient flyrock impact resistance and adhesive strength.

In addition, because the first glass plate and the second glass plate are arranged on the two opposite sides of the middle layer, when the glass assembly is impacted by external impact, the middle layer can bond or hold glass and glass fragments so as to reduce the probability of glass breaking and splashing.

Wherein the surface compressive stress σ of the window portion ₁ Is 100MPa to 200MPa, and the surface compressive stress sigma of the edge part ₂ Is 500MPa to 800MPa.

Wherein the first glass sheet further has a transition portion disposed between the window portion and the edge portion, the transition portion having a surface compressive stress greater than a surface compressive stress of the window portion and less than a surface compressive stress of the edge portion.

Wherein the surface compressive stress of the transition part in the area close to the window part is smaller than that of the transition part in the area far from the window part.

Wherein the surface compressive stress σ of the transition portion ₃ Is 200MPa-800MPa.

Wherein the window portion has an area percentage of 20% to 50% in the first glass plate, the edge portion has an area percentage of 15% to 40% in the first glass plate, and the transition portion has an area percentage of 10% to 65% in the first glass plate.

Wherein the depth d1 of the compressive stress layer of the window part is 20-55 μm, and the depth d2 of the compressive stress layer of the edge part is 15-50 μm.

Wherein the first glass sheet is a chemically strengthened glass sheet.

Wherein the second glass plate is a physically strengthened glass plate having a surface compressive stress σ ₄ Is 8MPa to 25MPa.

Wherein the thickness h1 of the first glass plate is 0.7mm-1.2mm, and the thickness h2 of the second glass plate is 1.8mm-2.8mm.

Wherein the first glass sheet is made of an alkali aluminosilicate glass and the second glass sheet is made of a soda-lime silicate glass.

Wherein the first glass sheet and the second glass sheet are both made of soda-lime-silicate glass.

Wherein the glass assembly has a head injury index HIC value of 350-500.

In a second aspect, the present application provides a method of making a glass assembly comprising:

providing glass to be treated, wherein the glass to be treated is provided with a window part and an edge part arranged around the window part;

carrying out ion exchange treatment on the glass to be treated to obtain strengthened glass;

carrying out partition ion migration treatment on the tempered glass in the window part to enable the surface compressive stress of the window part to be smaller than that of the edge part, and obtaining a first glass plate;

providing an interlayer and a second glass sheet; and

and respectively arranging the first glass plate and the second glass plate on two opposite sides of the middle layer to obtain the glass assembly.

The preparation method of the glass assembly provided by the second aspect of the application has the advantages of simple process and strong operability. Firstly, ion exchange treatment is carried out on glass to be treated to obtain strengthened glass, and a foundation is provided for subsequent subarea ion migration treatment. Then, a partitioned ion migration process is performed on the window portion and the edge portion to obtain a first glass plate having a surface compressive stress of the window portion smaller than a surface compressive stress of the edge portion. Then, the first glass plate, the second glass plate and the intermediate layer are assembled to obtain the glass assembly.

Therefore, the first glass plate in the glass assembly prepared by the preparation method has the window part and the edge part with different surface compressive stresses, and the surface compressive stress of the window part is smaller than that of the edge part, so that the energy absorption and buffering capacity of the glass of the window part under the high-speed impact of a blunt object is improved, the damage to people caused by severe collision is reduced, and the capacity of the glass of the window part to resist the low-energy impact of sharp objects such as flying stones and the like without breaking is improved; and also to provide the glass of the edge portion with sufficient adhesive strength so that the glass assembly satisfies both the mannequin test and the line guarantee test and has sufficient flyrock impact resistance and adhesive strength.

Wherein the step of performing a zoned ion mobility treatment on the strengthened glass in the window portion includes:

and heating the tempered glass in the window part and the edge part, wherein the heating temperature of the window part is higher than that of the edge part.

Wherein, in the process of heating the strengthened glass in the window part and the edge part, the heating temperature T1 of the window part is 450-550 ℃, the heating temperature T2 of the edge part is 30-320 ℃, and the heating time T of the window part and the edge part is 30-120 min.

Wherein the strengthened glass satisfies at least one of:

surface compressive stress σ of the tempered glass ₅ 500MPa to 800MPa;

the depth d3 of the compressive stress layer of the tempered glass is 10-40 μm.

A third aspect of the present application provides a vehicle comprising a body, and a glass component as provided in the first aspect of the present application mounted on the body; wherein, in the glass assembly, the first glass plate is closer to the inner space of the vehicle body than the second glass plate.

In the vehicle provided by the third aspect of the present application, by adopting the glass assembly provided by the first aspect of the present application, the first glass plate of the glass assembly in the vehicle has the window portion and the edge portion with different surface compressive stresses, and the surface compressive stress of the window portion is smaller than that of the edge portion, so that the energy absorption and buffering capacity of the glass of the window portion when being impacted by a blunt object at a high speed is improved, the damage to people due to severe collision is reduced, and the capacity of the glass of the window portion to resist sharp objects such as flying stones and the like and not to break due to low-energy impact is improved; and also to provide the glass of the edge portion with sufficient adhesive strength so that the glass assembly satisfies both the mannequin test and the underwriting test and has sufficient flyrock impact resistance and adhesive strength.

Drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be described below.

FIG. 1 is a schematic view of a glass assembly according to an embodiment of the present application.

FIG. 2 is a top view of a first glass plate in accordance with an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a first glass plate according to an embodiment of the present disclosure.

FIG. 4 is a top view of a first glass sheet in another embodiment of the present application.

FIG. 5 is a top view of a first glass sheet according to yet another embodiment of the present application.

FIG. 6 is a schematic view of a first glass plate according to another embodiment of the present disclosure.

FIG. 7 is a schematic view of a first glass plate according to yet another embodiment of the present application.

FIG. 8 is a graph showing the impact properties of the model head of the glass member in examples and comparative examples.

FIG. 9 is a process flow diagram of a method of making a glass assembly in accordance with an embodiment of the present application.

Fig. 10 is a process flow diagram included in S300 according to an embodiment of the present disclosure.

Description of reference numerals:

glass component-1, intermediate layer-10, adhesive side-11 a, non-adhesive side-11 b, first glass plate-111, second glass plate-112, window portion-12, edge portion-13, transition portion-14, and sub-region-15.

Detailed Description

The following is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications are also considered as the protection scope of the present application.

Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order.

Before the technical solutions of the present application are introduced, the technical problems in the related art will be described in detail.

Along with the continuous improvement of the requirements of people on the active safety performance and the passive safety performance of automobiles, the requirements on the safety performance of automobile glass are also continuously improved. For example, in addition to the requirement for protecting the passenger from an internal collision in the early stage (Head model), the standards such as (center automobile research) C-NCAP, (center research) C-IASI, EURO-NCAP, ECE UN R127 newly add a requirement for protecting the passenger from an external collision, and specify that the Head Injury index (HIC) cannot exceed a certain predetermined value when the dummy Head model collides with a certain position on the front windshield at a certain speed and direction from the outside of the vehicle.

However, the current automobile glass cannot simultaneously meet the human head model test and the traffic insurance test and has enough flyrock impact resistance and bonding strength. For example, the windshield in the related art is generally a laminated glass, such as the combination of 2.1+2.1, 2.3+2.3, 2.5+2.5, etc., is limited by the surface stress of the glass, and when the annealing stress of the glass is greater than 15MPa, the preservation test is performed with a greater risk. If the mode that the stress of the glass can be reduced only by slow annealing after self-weight forming is adopted, the production efficiency and the forming precision are reduced. Moreover, the front windshield has poor resistance to road flying stones due to low surface stress, and the glass is easy to break due to external sand impact in the driving process.

For another example, in the asymmetric front windshield laminated glass in the related art, when the outer glass plate is soda-lime annealed glass, the inner glass plate is chemically strengthened glass, and the surface compressive stress of the inner glass plate is weakened on the surface of the inner glass plate on the side close to the intermediate layer, the internal impact fracture performance is improved, but for external impact, the surface compressive stress on the side of the inner glass plate away from the intermediate layer is still too high, and there is a risk of no fracture.

For another example, although the front windshield laminated glass in the related art uses a soda-lime chemically tempered inner panel glass and improves the internal impact fracture performance by reducing the surface compressive stress, the compressive stress range (for example, 350MPa to 550 MPa) of the inner panel glass is still too high for external impact, and there is a risk in the pedestrian protection test. In addition, because the compressive stress of the inner plate glass is low, the gluing area of the inner glass plate after gluing and loading the vehicle is easy to be broken by force in the periphery of the surface of the inner glass plate close to the vehicle, and the bracket, the rearview mirror and the like adhered to the inner plate glass are also easy to be broken by external force.

Moreover, more and more electric automobiles appear in the market at present, which also puts requirements on the light weight of automobile glass. The laminated glass of the related art is typically symmetrical glass, (e.g., 2.1mmSG +0.76mmPVB + 2.1mmSG), where SG is soda-lime silicate glass.

Specifically, in the combination of 2.1mm +0.76PVB +0.7mm glass, the thickness of the 0.7mm glass plate is insufficient, and the thin glass is hard to be strengthened by heat strengthening, so that the chemical strengthening treatment is needed to be carried out on the 0.7mm thin glass plate. The material is for example a combination of high aluminum of 2.1mmSG +0.76PVB +0.7 mm. Wherein, the compression stress of the thin glass plate (sodium calcium material) after chemical tempering can at least reach the level of 350MPa-550MPa, and even easily reach the level of more than 700MPa if a high-aluminum material is used.

However, the national standard for pedestrian protection, european standard ECER13, for the mannequin test, all places requirements on front windshield laminated glass, wherein pedestrian protection requires that the laminated glass be broken to absorb impact energy (as evaluated by HIC values) after the central visible area of the glass is impacted by a pedestrian from the outside, while the mannequin test requires that the laminated glass be broken to absorb impact energy when the glass is impacted by an inside driver/passenger.

This requires weakening of the existing asymmetric laminated glass. However, there is a limit to weakening, since the national standard GB9656 also has specific requirements for impact resistance (steel ball impact test). Meanwhile, the adhesive strength of the accessories around the glass is also required. Therefore, the current automobile glass cannot simultaneously meet the human head model test and the guarantee test and has enough flyrock impact resistance and bonding strength.

In view of the above, in order to solve the above problems, the present application provides a glass assembly. Referring to fig. 1 to 3 together, fig. 1 is a schematic structural view of a glass assembly according to an embodiment of the present disclosure. FIG. 2 is a top view of a first glass plate in accordance with an embodiment of the present application. FIG. 3 is a schematic structural diagram of a first glass plate according to an embodiment of the present disclosure.

The present embodiment provides a glass assembly 1 comprising an interlayer 10, a first glass plate 111 and a second glass plate 112, the first glass plate 111 and the second glass plate 112 being provided on opposite sides of the interlayer 10. The first glass plate 111 has a window portion 12 and an edge portion 13 disposed around the window portion 12, and the surface compressive stress of the window portion 12 is smaller than the surface compressive stress of the edge portion 13.

The glass unit 1 according to the present embodiment can be used in the field of vehicles to protect, observe, or cooperate with other members, and the glass unit 1 can be understood as a laminated glass. The shape and structure of the glass component 1 are not limited in the present application. The glass unit 1 according to the present embodiment can be applied to various fields and structures, and the present embodiment is schematically described only in the case where the glass unit 1 is applied to a vehicle. This does not necessarily mean that the glass assembly 1 of the present embodiment is applied to a vehicle. In other embodiments, the method can be applied to other structures, such as the building field, the mechanical field and the like.

The present embodiment provides a glass assembly 1 comprising an interlayer 10 for bonding or holding glass 11, glass 11 fragments. In the present embodiment, the size and shape of the intermediate layer 10 are not limited. Optionally, the interlayer 10 comprises one or more of Polyvinyl butyral (PVB), ethylene-Vinyl Acetate Copolymer (EVA), polymer. Optionally, the thickness of the intermediate layer 10 is 0.6mm-0.9mm. Specifically, the thickness of the intermediate layer 10 is 0.7mm, or 0.8mm. In this embodiment, since the two pieces of glass 11 are adhered to the intermediate layer 10, when the glass assembly 1 is hit by an external impact, the intermediate layer 10 can adhere or hold the pieces of glass 11 and glass 11, so as to reduce the possibility of the glass 11 being broken and splashed. The thickness of the interlayer 10 refers to the dimension of the interlayer 10 in the direction in which the interlayer 10 and the glass 11 are aligned (as indicated by the direction D in fig. 1).

The glass assembly 1 according to the present embodiment further includes a first glass plate 111 and a second glass plate 112 for protecting and fixing other members. In the present embodiment, the shape, size, and material of the first glass plate 111 and the second glass plate 112 are not limited. Optionally, the outer side of the glass component 1 is a curved surface, or a flat surface. Optionally, the first glass plate 111 and the second glass plate 112 each have a thickness of 0.7mm to 2.8mm. Specifically, the thickness of the first glass plate 111 and the second glass plate 112 is 0.9mm to 2.5mm, or 1.2mm to 2.3mm, or 1.6mm to 1.8mm. The thickness of the first glass plate 111 and the second glass plate 112 refers to the size of the first glass plate 111 and the second glass plate 112 in the alignment direction of the interlayer 10 and the first glass plate 111.

Optionally, the first glass plate 111 and the second glass plate 112 comprise one or more of soda-lime silicate, aluminosilicate. The first glass plate 111 and the second glass plate 112 of the present embodiment may include soda-lime-silica to reduce production costs. Alternatively, the first glass plate 111 and the second glass plate 112 may include aluminosilicate to reduce the processing difficulty and improve the production efficiency.

Specifically, in one embodiment, the first glass sheet 111 is made of an alkali aluminosilicate glass and the second glass sheet 112 is made of a soda-lime silicate glass.

In another embodiment, the first glass sheet 111 and the second glass sheet 112 are both made of soda-lime-silicate glass.

The first glass plate 111 provided in the present embodiment has a window portion 12 and an edge portion 13, where the window portion 12 refers to a region where a user looks far through the first glass plate 111, and can also be understood as a central region of the first glass plate 111; the edge portion 13 refers to an area for bonding other members to the first glass plate 111, and may also be understood as a peripheral area of the first glass plate 111. Also, the surface compressive stress of the first glass plate 111 in the window portion 12 is smaller than the surface compressive stress of the first glass plate 111 in the edge portion 13, in other words, the window portion 12 can also be understood as a low compressive stress region and the edge portion 13 as a high compressive stress region. In the present embodiment, the shapes and sizes of the window portion 12 and the edge portion 13 are not limited.

In this case, the surface compressive stress of the window portion 12 is smaller than the surface compressive stress of the edge portion 13, in other words, the surface compressive stress of the first glass plate 111 in the window portion 12 is smaller than the surface compressive stress of the first glass plate 111 in the edge portion 13. The window portion 12 can also be understood as a window area of the first glass plate 111, and the edge portion 13 can also be understood as an edge area of the first glass plate 111.

Alternatively, when the glass assembly 1 is applied to a vehicle, the window portion 12 includes at least a test area "a" area of the front windshield 11 divided according to ECE R43. The present embodiment ensures that the window portion 12 with a lower surface compressive stress can improve the energy absorption and buffering capacity of the glass assembly 1 when being impacted by a blunt object at a high speed by limiting the window portion 12 to at least include the area "a", thereby reducing the damage to people caused by severe collision and improving the ability of the glass assembly 1 to withstand the impact of sharp objects such as flying stones at a low energy without breaking. It should be noted that the "a" region refers to a region that the human head may contact.

Alternatively, when the glass assembly 1 is applied to a vehicle, the edge portion 13 includes at least an adhesive area of the glass assembly 1 on a side near the interior of the vehicle, which is an area in the vehicle for adhering a stud, edge strip, bracket, mirror mount, body glue, etc.

Further alternatively, when the glass assembly 1 is applied to a vehicle, the edge portion 13 is adhered to the first glass plate 111 of the edge portion 13 with one or more of studs, hembars, brackets, mirror bases, body glues.

Optionally, the width of the first glass plate 111 in the edge portion 13 is not less than 50mm, and the edge portion 13 includes the outer side edge of the first glass plate 111. In other words, the edge portion 13 includes at least a width region starting from the peripheral edge of the first glass plate 111 and extending inward by 50 mm. In the present embodiment, the width of the first glass plate 111 in the edge portion 13 is limited to ensure that the regions for bonding provided on the peripheral edge of the first glass plate 111 are all provided in the edge portion 13, thereby reducing the probability of dropping off the components in the edge portion 13 and reducing the probability of glass breakage and scattering.

Optionally, the edge portion 13 is provided with a protruding region protruding toward a direction close to the window portion 12, and the protruding region is used for a connection member. For example, when applying the glass component 1 to a vehicle, a raised area in the edge portion 13 is often used to provide a rearview mirror base for a user to view the environment. The raised area in this embodiment can be set according to the requirements of the product, increasing the applicability of the glass assembly 1.

In one embodiment, the first glass plate 111 in the glass assembly 1 has a window portion 12 and an edge portion 13, and the surface compressive stress of the window portion 12 is less than the surface compressive stress of the edge portion 13; the surface compressive stress of the second glass plate 112 is uniformly set. In another embodiment, the first glass plate 111 and the second glass plate 112 in the glass assembly 1 each have a window portion 12 and an edge portion 13, and the surface compressive stress of the window portion 12 is smaller than the surface compressive stress of the edge portion 13.

First, when the glass assembly 1 encounters an external impact, for example: a flyrock impact, a pedestrian impact, a head impact, etc., is highly likely to be subjected to an external impact because the window portion 12 is provided at the center of the first glass plate 111. However, since the surface compressive stress of the window portion 12 of the first glass plate 111 according to the present embodiment is small, the energy absorption and buffering capacity of the glass of the window portion 12 when subjected to a high-speed impact from a blunt object is improved, the damage to a person due to a severe collision is reduced, and the ability of the glass of the window portion 12 to withstand a low-energy impact from a sharp object such as a flying stone is improved without breaking.

Secondly, when the glass assembly 1 is hit by external impact, the parts adhered to the glass are easily detached, even resulting in glass breakage. However, since the surface compressive stress of the edge portion 13 is large in the first glass plate 111 according to the present embodiment, the adhesion strength between the glass and the member in the edge portion 13 is large, and the probability of the member falling off and the probability of the glass 11 being broken and scattered can be reduced.

Compared with the glass component 1 in the prior art, in which the surface compressive stresses of the window part 12 and the edge part 13 are the same, the embodiment optimizes the surface compressive stresses of the two regions respectively according to the different characteristics of the window part 12 and the edge part 13 when being impacted, so that the surface compressive stress of the window part 12 is smaller than that of the edge part 13, thereby improving the energy absorption and buffering capacity of the glass of the window part 12 when being impacted by a blunt object at a high speed, reducing the damage to people due to severe collision, and improving the capacity of the glass component 1 to resist sharp objects such as flying stones and the like without cracking due to low-energy impact; and also provides sufficient bonding strength to the glass of the edge portion 13 so that the glass assembly 1 satisfies both the manned head model test and the underway test, and has sufficient flying stone impact resistance and bonding strength.

It should be noted that, pedestrian protection collision test and head model collision test require "the glass assembly 1 is easy to break, the faster the breaking is, the better the buffering effect for the impact of the head is, the glass depends on the bonding and buffering action of the intermediate layer 10 after breaking, the impact damage can be reduced significantly by the person head model after a long path of buffering, if the glass strength is too high, the glass is not broken after the impact or the breaking time of the glass is late (the glass breaks after the impact deforms greatly), the phenomenon of" hard impact "can be generated, the person head model is decelerated rapidly or even rebounds after the impact, and the impact damage is extremely large.

And, to the striking and the automobile body of road flying stone, hail etc. glue intensity, hope "glass subassembly 1 is difficult to be broken again, intensity is higher better to improve the life of glass subassembly 1, thereby improve the loading durability.

The two types of performances are a pair of spear bodies, the glass component 1 is required to achieve the effects of being easy to break under the high-energy impact of a blunt object, improving the buffer effect and ensuring the tolerance of low-energy impact, so the glass of the window part 12 is weakened to a certain degree in the application to meet the requirements of protecting a head mould and a pedestrian, but the weakening degree does not influence the impact resistance and the attachment bonding strength of the glass of the edge part 13 of the application at the same time, and on the basis, the technical problems are solved by adopting the tempering technology with different degrees in a subarea way; alternatively, the present application provides a lightweight glass package 1 that meets all performance requirements.

In one embodiment, the surface compressive stress σ of the window portion 12 ₁ Is 100MPa to 200MPa, the surface compressive stress sigma of the edge portion 13 ₂ Is 500MPa to 800MPa.

Optionally, the surface compressive stress σ of the viewing window portion 12 ₁ Is 120MPa, or 140MPa, or 160MPa, or 180MPa; surface compressive stress σ of the edge portion 13 ₂ Is 550MPa, or 600MPa, or 650MPa, or 700MPa, or 750MPa.

Surface compressive stress σ of glass in the window portion 12 ₁ The glass is 100MPa-200MPa, so that the glass can have higher energy absorption and buffering capacity when being impacted by a blunt object at a high speed, the harm to people caused by severe collision is reduced, the capacity of the glass for resisting sharp objects such as flying stones and the like without cracking due to low-energy impact is improved, the process difficulty can be reduced, and the production cost can be reduced. If the surface compressive stress of the glass in the window part 12 is less than 100MPa, the process difficulty is increased, the production cost is improved, and the capability of the glass for resisting sharp objects such as flying stones and the like and preventing breakage due to low-energy impact is reduced; if the surface compressive stress of the glass in the window portion 12 is greater than 200MPa, the energy absorption and buffering capacity of the glass under high-speed impact of a blunt object is reduced, and the damage to people due to severe collision is increased.

Surface compressive stress σ of glass in edge portion 13 ₂ Is 500MPa to 800MPa, can ensure that the bonding strength between the glass in the edge part 13 and the component is higher, and can reduce the process difficulty and the production cost. If the surface compressive stress of the glass in the edge portion 13 is less than 500MPa, the process difficulty is increased, and the production cost is increased; at the same time, the adhesion strength between the glass and the member in the edge portion 13 is reduced, so that the member is easily detached and the glass 11 is broken and easily splashed.

Referring to fig. 4-6, fig. 4 is a top view of a first glass plate according to another embodiment of the present application. FIG. 5 is a top view of a first glass sheet according to yet another embodiment of the present application. FIG. 6 is a schematic view of a first glass plate according to another embodiment of the present disclosure. In one embodiment, the first glass plate 111 further has a transition portion 14 disposed between the window portion 12 and the edge portion 13, and the transition portion 14 has a surface compressive stress greater than a surface compressive stress of the window portion 12 and less than a surface compressive stress of the edge portion 13.

The first glass plate 111 provided in this embodiment further includes a transition portion 14 for performing a transition and buffering function. In the present embodiment, the shape and size of the transition portion 14 are not limited. Wherein the surface compressive stress of the transition portion 14 is greater than that of the window portion 12 and less than that of the edge portion 13; in other words, the surface compressive stress of the transition portion 14 is set between the window portion 12 and the edge portion 13.

In one embodiment, the surface compressive stress σ of the transition portion 14 ₃ Is 200MPa to 800MPa.

Optionally, the surface compressive stress σ of the glass in the transition portion 14 ₃ Is either 230MPa, or 250MPa, or 300MPa, or 320MPa, or 350MPa, or 380MPa, or 400MPa, or 450MPa, or 500MPa, or 550MPa, or 600MPa, or 650MPa, or 700MPa, or 750MPa.

Surface compressive stress σ of the glass in the transition portion 14 ₃ 200MPa-800MPa, not only can ensure the buffer function of the transition part 14, but also can reduce the process difficulty and the production cost. If the surface compressive stress of the glass in the transition part 14 is less than 200MPa, the process difficulty is increased, and the production cost is increased; if the surface compressive stress of the glass in the transition portion 14 is greater than 800MPa, the buffer effect of the transition portion 14 may not be achieved.

In the embodiment, the transition part 14 is arranged between the window part 12 and the edge part 13, and the surface compressive stress of the transition part 14 is arranged between the window part 12 and the edge part 13, so that the buffer and the transition between the low compressive stress and the high compressive stress region in the glass are realized, the stability of the glass is improved, and the stability of the glass assembly 1 is improved.

In one embodiment, the surface compressive stress of the transition portion 14 in the region proximate to the window portion 12 is less than the surface compressive stress of the transition portion 14 in the region distal to the window portion 12.

In the glass in the transition portion 14, the local surface compressive stresses are not equal, the surface compressive stress near the window portion 12 being less than the surface compressive stress away from the window portion 12; in other words, the surface compressive stress is smaller in the glass portion near the window portion 12 having a lower surface compressive stress, and is larger in the glass portion near the edge portion 13 having a higher surface compressive stress.

Optionally, in the transition portion 14, the change in surface compressive stress may be one or more of gradual, or stepped.

In the present embodiment, by setting the surface compressive stress in the transition portion 14, the transition portion 14 can more fully exert its buffer effect between the window portion 12 and the edge portion 13, and the stability of the glass 11 is further improved, thereby further improving the stability of the glass assembly 1.

In one embodiment, the window portion 12 has an area percentage of 20% to 50% in the first glass plate 111, the edge portion 13 has an area percentage of 15% to 40% in the first glass plate 111, and the transition portion 14 has an area percentage of 10% to 65% in the first glass plate 111.

Optionally, the window portion 12 has an area ratio of 25%, or 30%, or 35%, or 40%, or 45% in the first glass plate 111; the area percentage of the edge portion 13 in the first glass plate 111 is 20%, or 25%, or 30%, or 35%; the transition portion 14 has an area ratio of 15%, or 20%, or 25%, or 30%, or 35%, or 40%, or 45%, or 50%, or 55%, or 60% in the first glass plate 111.

The area of the window part 12 on the first glass plate 111 accounts for 20% -50%, so that the glass can be ensured to have higher energy absorption and buffering capacity when being impacted by a blunt object at a high speed, the harm to people caused by violent collision is reduced, the capacity of the glass for resisting low-energy impact of sharp objects such as flying stones and the like without breakage is improved, the process difficulty can be reduced, and the production cost can be reduced. If the area ratio of the window portion 12 in the first glass plate 111 is less than 20%, the area is too small, so that the window portion cannot cover the impact area required by pedestrian protection and the pedestrian head model test, and cannot meet the requirements of pedestrian protection and the pedestrian head model test; if the area fraction of the glass in the window portion 12 is greater than 50%, the area is too large, occupying the area of other regions, increasing the difficulty of the process, and increasing the production cost.

The area of the edge part 13 in the first glass plate 111 is 15-40%, so that the bonding strength between the glass in the edge part 13 and the component is ensured to be high, the process difficulty is reduced, and the production cost is reduced. If the area ratio of the edge portion 13 in the first glass plate 111 is less than 15%, the area becomes too small, and the adhesion strength between the glass and the member in the edge portion 13 cannot be sufficiently secured, so that the member is likely to fall off, and the glass is likely to scatter when broken; if the area fraction of the glass in the edge portion 13 is greater than 40%, the area is too large, the area of other regions is occupied, the process difficulty is increased, and the production cost is increased.

The area of the transition part 14 in the first glass plate 111 is 10% -65%, so that the transition part 14 can play a buffering role, the process difficulty can be reduced, and the production cost can be reduced. If the area ratio of the transition portion 14 in the first glass plate 111 is less than 10%, the area is too small, and the buffer effect of the transition portion 14 cannot be ensured, so that the stability of the glass is reduced, and the service life of the glass is shortened; if the area fraction of the glass in the transition portion 14 is greater than 65%, it results in too large an area, occupies an area of other regions, increases process difficulty, and increases production costs.

Optionally, please refer to fig. 7, and fig. 7 is a schematic structural diagram of a first glass plate according to another embodiment of the present application. In one embodiment, the first glass sheet 111 has opposing bonding 11a and non-bonding 11b surfaces, the interlayer 10 is bonded to the bonding surface 11a; the bonding surface 11a includes a plurality of sub-regions 15, and the surface compressive stress of each sub-region 15 is equal to the surface compressive stress of the non-bonding surface 11b corresponding to the sub-region 15.

In the present embodiment, the surface compressive stress of each of the sub-regions 15 of the adhesive surface 11a and the non-adhesive surface 11b corresponding to the sub-region 15 are equal, in other words, the surface compressive stress of the adhesive surface 11a and the non-adhesive surface 11b at the same position is equal. In one embodiment, the plurality of sub-regions 15 include a window portion 12, and the surface compressive stress of the window portion 12 of the adhesive surface 11a is equal to the surface compressive stress of the window portion 12 of the non-adhesive surface 11 b. In another embodiment, the plurality of sub-areas 15 comprise edge portions 13, the surface compressive stress of the edge portions 13 of the adhesive side 11a being equal to the surface compressive stress of the edge portions 13 of the non-adhesive side 11b which is directly corresponding.

In the present embodiment, the glass stability is improved by limiting the local surface compressive stress of the glass bonding surface 11a and the non-bonding surface 11b to be equal, thereby improving the stability of the glass assembly 1.

In one embodiment, the depth d1 of the compressive stress layer of the window portion 12 is 20 μm to 55 μm, and the depth d2 of the compressive stress layer of the edge portion 13 is 15 μm to 50 μm.

Optionally, the depth of layer of compressive stress d1 of the window portion 12 is 25 μm, or 30 μm, or 35 μm, or 40 μm, or 45 μm, or 50 μm. The depth of layer d2 of the compressive stress of the edge portion 13 is 20 μm, or 25 μm, or 30 μm, or 35 μm, or 40 μm, or 45 μm.

The depth of the compressive stress layer of the window part 12 is 20-55 μm, which not only ensures that the glass component 1 simultaneously meets the requirements of a human head model test and a line guarantee test, but also has enough flyrock impact resistance and bonding strength, and can reduce the process difficulty and the production cost. If the depth of the compressive stress layer of the window portion 12 is less than 20 μm, the glass assembly 1 cannot simultaneously satisfy the human head model test and the practical guarantee test, and has sufficient flyrock impact resistance and bonding strength; if the depth of the compressive stress layer of the window portion 12 is greater than 55 μm, the process difficulty increases and the production cost increases.

The depth of the compressive stress layer of the edge part 13 is 15-50 μm, so that the glass assembly 1 can meet the requirements of a human head model test and a performance guarantee test at the same time, has enough flyrock impact resistance and bonding strength, and can reduce the process difficulty and the production cost. If the depth of the compressive stress layer of the edge portion 13 is less than 15 μm, the glass assembly 1 cannot simultaneously satisfy a human head model test and a performance guarantee test, and has sufficient flyrock impact resistance and bonding strength; if the depth of the compressive stress layer of the edge portion 13 is more than 50 μm, the process difficulty increases and the production cost increases.

Optionally, the depth of the compressive stress layer of the window portion 12 is greater than the depth of the compressive stress layer of the edge portion 13.

Make the compressive stress depth of layer of window part 12 be greater than marginal portion 13's compressive stress depth of layer in this embodiment to according to window part 12 and marginal portion 13 receive different characteristics when striking, further improved energy absorption and the buffer capacity when the glass of window part 12 receives the high-speed impact of blunt object, further reduce the injury to the people of violent collision, further improve the glass of window part 12 simultaneously and endure sharp objects such as flying stone low energy impact non-rupture's ability.

In one embodiment, the first glass sheet 111 is a chemically strengthened glass sheet.

In one embodiment, the second glass sheet 112 is a physically strengthened glass sheet having a surface compressive stress σ ₄ Is 8MPa-25MPa.

Optionally, the surface compressive stress σ of the second glass sheet 112 ₄ Is 10MPa, or 12MPa, or 14MPa, or 16MPa, or 18MPa, or 20MPa, or 22MPa.

Surface compressive stress σ of the second glass plate 112 ₄ The pressure is 8MPa-25MPa, so that the glass component 1 can meet the requirements of a human head model test and a bank protection test at the same time, has sufficient flying stone impact resistance and bonding strength, and can reduce the process difficulty and the production cost. If the surface compressive stress of the second glass plate 112 is less than 8MPa, the process difficulty is increased, and the production cost is increased; if the surface compressive stress of the second glass plate 112 is greater than 25MPa, the glass assembly 1 cannot satisfy both the human head model test and the performance test and has sufficient flyrock impact resistance and adhesive strength.

Optionally, in one embodiment, the thickness of the second glass plate 112 is greater than the thickness of the first glass plate 111. The present embodiment makes the two glasses 11 in the glass assembly 1 asymmetric by limiting the thickness difference between the first glass plate 111 and the second glass plate 112. This arrangement helps to improve the flying stone impact resistance of the glass assembly 1 and to improve the ability of the glass assembly 1 to withstand low energy impacts from sharp objects such as flying stones without breaking.

Referring again to fig. 1, in one embodiment, the thickness h1 of the first glass plate 111 is 0.7mm to 1.2mm, and the thickness h2 of the second glass plate 112 is 1.8mm to 2.8mm.

Optionally, the thickness of the first glass plate 111 is 0.8mm, or 0.9mm, or 1.0mm, or 1.1mm. The second glass plate 112 has a thickness of 2.0mm, or 2.2mm, or 2.4mm, or 2.6mm.

The thickness of the first glass plate 111 is 0.7mm-1.2mm, so that the glass assembly 1 is high in capability of resisting low-energy impact of sharp objects such as flying stones and the like and preventing breakage, the process difficulty can be reduced, and the production cost can be reduced. If the thickness of the first glass sheet 111 is less than 0.7mm, this may result in a reduction in the ability of the glass assembly 1 to withstand low energy impacts of sharp objects such as flying stones without breaking; if the thickness of the first glass plate 111 is greater than 1.2mm, the process difficulty increases, and the production cost increases.

The thickness of the second glass plate 112 is 1.8mm-2.8mm, which not only ensures that the glass component 1 has higher capability of resisting the low-energy impact of sharp objects such as flying stones and the like without cracking, but also can reduce the process difficulty and the production cost. If the thickness of the second glass sheet 112 is less than 1.8mm, this may result in a reduction in the ability of the glass assembly 1 to withstand low energy impacts from sharp objects such as flying stones without breaking; if the thickness of the second glass plate 112 is greater than 2.8mm, the process difficulty is increased and the production cost is increased.

In one embodiment, the glass subassembly 1 has a head injury index HIC value of 350 to 500. The HIC value of the glass assembly 1 in the present embodiment is 350 to 500, which means that the glass assembly 1 provided by the present embodiment has good energy absorption and buffering ability when being impacted by a blunt object at a high speed, reduces the damage to people due to a severe collision, and can protect pedestrians.

Referring to fig. 8, table 1, and table 2, fig. 8 is a graph showing the human head model impact performance of the glass devices of the examples and comparative examples. Table 1 shows the relevant parameters for each example and each comparative example. Table 2 shows the performance parameters of each example and each comparative example.

It is to be noted that, in the parameters relating to each example and each comparative example in table 1, the first glass plate 111 has a window portion 12 of about 30% in area and an edge portion 13 of about 20% in area.

The test performance parameters in table 2 include: a head model test was performed as specified in GB9656 for evaluating the protection ability of an interior occupant. Pedestrian protection crash tests were performed as specified by (medium steam research) C-NCAP for evaluation of the protection ability against external pedestrians. A test is carried out by adopting 227g of quenched steel ball used in a GB9656 impact resistance test and an impact test device, the steel ball freely falls to impact the outer surface of the laminated glass, the test is started from the falling height of 0.5m, if the steel ball is not broken in each impact, the steel ball is increased by 0.5m to continue the test until the steel ball is broken, the broken height is recorded and used for evaluating the flying stone impact breaking resistance, and the strength is considered to be insufficient when the broken height is less than 2.5 m. After the base is bonded according to a normal process, a sample is fixed on a testing machine (normal temperature and normal pressure), the testing machine applies a tensile load along the central position and the vertical plane direction of the glass at the speed of 5mm/min until the glass is broken or the base falls off, the tensile value at the moment is recorded and used for evaluating the bonding strength of the edge part 13 and a vehicle frame gluing area, and the strength is considered to be insufficient when the tensile force is less than 660N.

TABLE 1 relevant parameters for the examples and comparative examples

TABLE 2 Performance parameters for each example and each comparative example

As is clear from the above tables 1 and 2, the second glass plate 112 of comparative example 1 has too low a surface compressive stress, and the second glass plate 112 is liable to be broken when it is subjected to an impact, and the impact resistance is insufficient. The window portion 12 of the first glass plate 111 in comparative example 2 is too low in stress, and the surface of the glass assembly 1 near the vehicle interior is susceptible to tensile breakage upon impact, and the impact resistance is insufficient. The window portion 12 of the first glass plate 111 in comparative example 3 was too stressed, resulting in an excessively high HIC value for pedestrian protection test. The edge portion 13 of the first glass plate 111 in comparative example 4 is too low in stress, resulting in insufficient adhesive strength. The second glass sheet 112 surface compressive stress in comparative example 5 was too high, resulting in a too high HIC value for pedestrian protection experiments.

The first glass plate 111 in comparative example 6 does not have the window portion 12 and the edge portion 13 having different surface compressive stresses, and does not have the window portion 12 having a low compressive stress, resulting in an excessively high HIC test for pedestrian protection. The first glass plate 111 in comparative example 7 did not have the window portion 12 and the edge portion 13 having different surface compressive stresses, and the compressive stress was high, resulting in a defective head mold and an excessively high HIC value.

Comparative example 8 is a conventional symmetrical glass assembly 1, the glass surface has a certain compressive stress and the HIC is high. Comparative example 9 is a conventional symmetrical glass assembly 1, the glass surface was sufficiently annealed and the stress was low, resulting in insufficient impact resistance and adhesive strength. By symmetrical glass component 1 is here meant that the first glass plate 111 and the second glass plate 112 are of equal thickness.

As shown in fig. 8, the glass assembly 1 provided in examples 3 and 4 was able to generate many annular and radial cracks around the impact point, indicating that the glass assembly 1 of examples 3 and 4 passed the manned-die test, while the glass assembly 1 of comparative example 7 had no annular cracks, indicating that the glass assembly 1 of comparative example 7 failed the manned-die test.

In summary, in the glass assembly 1 of the present embodiment, the surface compressive stress of the window portion 12 of the second glass plate 112 is smaller than the surface compressive stress of the edge portion 13, the first glass plate 111 has a smaller surface compressive stress, and the thicknesses of the first glass plate 111 and the second glass plate 112 are different, so that the glass assembly 1 can satisfy the human head model test and the pedestrian protection test at the same time, and has sufficient impact resistance against flying stones and sufficient adhesive strength. In other words, the glass assembly 1 provided by the embodiment can simultaneously meet the HIC value of a human head model experiment and a pedestrian protection experiment below 500; and has superior impact rupture strength and attachment adhesion strength to the related art glass component 1.

The application also provides a method of making a glass assembly. Referring again to FIG. 1, and also to FIG. 9, FIG. 9 is a process flow diagram of a method of making a glass assembly according to an embodiment of the present disclosure. The present embodiment provides a method of manufacturing a glass assembly, including S100, S200, S300, S400, and S500. Wherein, the details of S100, S200, S300, S400, and S500 are as follows:

s100, providing glass to be processed, wherein the glass to be processed is provided with a window part and an edge part arranged around the window part.

The present embodiment provides glass to be treated. Optionally, the glass to be treated comprises one or more of a soda-lime silicate, an aluminosilicate. The window portion and the edge portion have been described above in detail and are not described herein.

Optionally, the glass to be treated is subjected to cutting, edging and hot bending before being provided.

S200, carrying out ion exchange treatment on the glass to be treated to obtain the strengthened glass.

The embodiment performs ion exchange treatment on the glass to be treated to obtain the strengthened glass, and provides a basis for subsequent subarea ion migration treatment.

S300, carrying out partition ion migration treatment on the strengthened glass in the window part to enable the surface compressive stress of the window part to be smaller than that of the edge part, and obtaining a first glass plate.

In this embodiment, the first glass plate is subjected to the partitioned ion transfer process according to the window portion and the edge portion, so that the surface compressive stress of the window portion is smaller than the surface compressive stress of the edge portion.

Optionally, in one embodiment, the strengthened glass in the edge portion is subjected to a zone ion transfer process. In another embodiment, the strengthened glass in the window portion, and the edge portion are each subjected to a zone ion mobility treatment.

S400, providing the intermediate layer and the second glass plate.

The interlayer and the second glass sheet have been described in detail above and will not be described further.

S500, respectively arranging the first glass plate and the second glass plate on two opposite sides of the middle layer to obtain a glass assembly.

Optionally, in one embodiment, the interlayer is a polymer interlayer, and the first glass sheet is laminated to the second glass sheet to provide the glass assembly.

The preparation method of the glass assembly provided by the embodiment is simple in process and high in operability. The first glass plate in the glass assembly prepared by the preparation method has a window part and an edge part with different surface compressive stresses, and the surface compressive stress of the window part is smaller than that of the edge part, so that the energy absorption and buffering capacity of the glass of the window part 12 under high-speed impact of a blunt object is improved, the damage to people caused by severe collision is reduced, and the capacity of the glass of the window part 12 to resist low-energy impact of sharp objects such as flying stones and the like without cracking is improved; and also provides sufficient bonding strength to the glass of the edge portion 13 so that the glass assembly 1 satisfies both the manned head model test, the line protection test, and the flying stone impact resistance and the bonding strength.

Referring to fig. 10, fig. 10 is a process flow diagram included in S300 according to an embodiment of the present disclosure. Wherein in S300, the step of performing the partitioned ion mobility process on the strengthened glass in the window portion includes:

s310, heating the window part and the tempered glass in the edge part, wherein the heating temperature of the window part is higher than that of the edge part.

In the present embodiment, the glass of the window portion can have a predetermined surface compressive stress by transferring predetermined ions of the strengthened glass in the window portion through a heat treatment.

Optionally, in one embodiment, the strengthened glass is placed in a zoned heating-cooling system and ion migration is performed in the window portion to achieve a desired stress distribution in the first glass sheet. The zoned heating-cooling system herein means that the heating temperature or the cooling temperature of the tempered glass in the window portion and the edge portion are not equal.

Optionally, the manufacturing method of the zoned-heating cooling device includes, but is not limited to, using a high-temperature-resistant profiling mold of the first glass plate as a supporting structure, arranging a temperature-controllable heating plate at the window portion, and arranging air-blowing cooling holes at the edge portion, so as to realize an ion migration process of a controllable region of the strengthened glass, thereby obtaining the first glass plate.

In one embodiment, during the heating of the strengthened glass in the window portion and the edge portion, the heating temperature T1 of the window portion is 450 to 550 ℃, the heating temperature T2 of the edge portion is 30 to 320 ℃, and the heating time T of the window portion and the heating time T of the edge portion are both 30 to 120min.

Optionally, the heating temperature of the window portion is 480 ℃, or 500 ℃, or 530 ℃. The heating temperature of the edge portion is 80 ℃, or 130mm, or 180 ℃, or 250 ℃, or 280 ℃, or 300 ℃.

The heating temperature of the window part is 450-550 ℃, so that the glass of the window part can have preset surface compression stress, the energy consumption can be reduced, and the production cost can be reduced. If the heating temperature of the window part is less than 450 ℃, the glass of the window part cannot have preset surface compressive stress; if the heating temperature of the window part is higher than 550 ℃, the energy consumption is increased, and the production cost is increased.

The heating temperature of the edge part is 30-320 ℃, which not only ensures that the glass of the edge part has the preset surface compression stress, but also can reduce the energy consumption and the production cost. If the heating temperature of the edge part is less than 30 ℃, the energy consumption is increased, and the production cost is increased; if the heating temperature of the edge portion is greater than 320 ℃, the glass of the edge portion may not have a predetermined surface compressive stress.

Optionally, the heating time of the window portion is the same as or different from the heating time of the edge portion.

Optionally, the heating time of the window portion and the heating time of the edge portion are both 40min, or 50min, or 60min, or 70min, or 80min, or 90min, or 100min, or 110min.

The heating time of the window part and the edge part is 30-120min, so that the glass of the window part and the edge part can have preset surface compression stress, the energy consumption can be reduced, and the production cost can be reduced. If the heating time of the window part and the edge part is less than 30min, the glass of the window part and the edge part cannot have preset surface compressive stress; if the heating time of the window portion and the edge portion is longer than 120min, the energy consumption is increased and the production cost is increased.

Optionally, in an embodiment, the partitioned ion migration process is: the tempered glass is placed in a zoned heating-cooling system, and the window portion is heated to 450 ℃ -550 ℃ so as to enable preset ions of the tempered glass in the window portion to migrate. For example, potassium ions in the glass are exchanged with sodium ions, so that potassium ions enriched on the surface of the glass migrate into the glass after ion exchange, the concentration of potassium ions on the surface of the glass is reduced, the surface compressive stress is greatly reduced, the thickness of the compressive stress layer is increased, and the depth of the compressive stress layer is increased. For another example, sodium ions and lithium ions in the glass are exchanged with each other, so that the surface compressive stress of the glass is greatly reduced, the thickness of the compressive stress layer is increased, and the depth of the compressive stress layer is increased. During the heating process, the temperature is kept for 30-120min to maintain the migration process until the cooling is started after the expected low compression stress is obtained. And in the process, the temperature of the edge part is maintained to be less than or equal to 320 ℃ until the temperature of the window part is reduced to 320 ℃, and then the tempered glass is taken out and integrally cooled to the room temperature, so that third glass is obtained.

In one embodiment, the strengthened glass meets at least one of the following: surface compressive stress σ of the tempered glass ₅ Is 500MPa to 800MPa. Said strength isThe depth of the compressive stress layer d3 of the vitrified glass is 10 μm to 40 μm.

Optionally, the strengthened glass has a surface compressive stress of 550MPa, or 600MPa, or 650MPa, or 700MPa, or 750MPa.

Optionally, the depth of layer of compressive stress of the strengthened glass is 15 μm, or 20 μm, or 25 μm, or 30 μm, or 35 μm.

The surface compressive stress σ of the strengthened glass obtained by subjecting the glass to be treated to the ion exchange treatment in the present embodiment ₅ The strength is 500MPa-800MPa, and compared with common glass, the reinforced glass provided by the embodiment has better impact resistance.

Optionally, when the tempered glass is subjected to the zone ion mobility treatment, the depth of the compressive stress layer in the window portion and the depth of the compressive stress layer in the edge portion are changed. For example, the depth of the compressive stress layer becomes larger in both the window portion and the edge portion. For another example, the depth of the compressive stress layer of the window portion is greater than the depth of the compressive stress layer of the edge portion.

The present application further provides a vehicle comprising a body and a glass assembly as provided herein above, the glass assembly mounted on the body; wherein, in the glass assembly, the first glass plate is closer to the inner space of the vehicle body than the second glass plate.

In other words, the glass having the window portion and the edge portion is closer to the inner space of the vehicle body.

Optionally, the vehicle comprises a rear view mirror, the glass assembly being provided on one side of the rear view mirror. In other words, the glass assembly is a front windshield.

Optionally, the loading angle of the glass assembly ranges from 20 ° to 40 °; the loading angle is an included angle between a central line formed by connecting the middle point of the top edge and the middle point of the bottom edge of the glass assembly and a horizontal plane.

Optionally, the height of the highest point of the glass assembly from the ground after the glass assembly is loaded on the truck is in the range of 1.3m to 2.0m.

According to the vehicle provided by the embodiment, by adopting the glass assembly provided by the application, the first glass plate of the glass assembly in the vehicle is provided with the window part and the edge part with different surface compressive stresses, and the surface compressive stress of the window part is smaller than that of the edge part, so that the energy absorption and buffering capacity of the glass of the window part under the high-speed impact of a blunt object is improved, the damage to people caused by violent collision is reduced, and the capacity of the glass of the window part for resisting the low-energy impact of sharp objects such as flying stones and the like without cracking is improved; and also to provide the glass of the edge portion with sufficient adhesive strength so that the glass assembly satisfies both the mannequin test and the line guarantee test and has sufficient flyrock impact resistance and adhesive strength.

The foregoing detailed description has provided embodiments of the present application and is presented to enable the principles and embodiments of the present application to be illustrated and described, where the above description is merely intended to facilitate the understanding of the present application's methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A glass assembly comprising an interlayer, a first glass sheet, and a second glass sheet, the first glass sheet and the second glass sheet being disposed on opposite sides of the interlayer, respectively;

2. The glass assembly of claim 1, wherein the window portion has a surface compressive stress σ ₁ Is 100MPa to 200MPa, and the surface compressive stress sigma of the edge part ₂ Is 500MPa to 800MPa.

3. The glass assembly of claim 1, wherein the first glass sheet further comprises a transition portion disposed between the window portion and the edge portion, the transition portion having a surface compressive stress that is greater than a surface compressive stress of the window portion and less than a surface compressive stress of the edge portion.

4. The glass assembly of claim 3, wherein a surface compressive stress of a region of the transition portion proximate the window portion is less than a surface compressive stress of a region of the transition portion distal from the window portion.

5. The glass assembly of claim 3, wherein the transition portion has a surface compressive stress σ ₃ Is 200MPa-800MPa.

6. The glass assembly of claim 3, wherein the window portion has an area percentage in the first glass sheet of 20% to 50%, the edge portion has an area percentage in the first glass sheet of 15% to 40%, and the transition portion has an area percentage in the first glass sheet of 10% to 65%.

7. The glass assembly of claim 1, wherein the depth of compressive stress layer d1 of the window portion is from 20 μ ι η to 55 μ ι η, and the depth of compressive stress layer d2 of the edge portion is from 15 μ ι η to 50 μ ι η.

8. The glass assembly of claim 1, wherein the first glass sheet is a chemically strengthened glass sheet.

9. The glass assembly of claim 1, wherein the second glass sheet is a physically strengthened glass sheet having a surface compressive stress σ ₄ Is 8MPa to 25MPa.

10. The glass assembly according to claim 1, wherein the first glass plate has a thickness h1 of 0.7mm to 1.2mm and the second glass plate has a thickness h2 of 1.8mm to 2.8mm.

11. The glass assembly of claim 1, the first glass sheet being made of an alkali aluminosilicate glass and the second glass sheet being made of a soda-lime silicate glass.

12. The glass assembly of claim 1, wherein the first glass sheet and the second glass sheet are both made of soda-lime-silicate glass.

13. The glass assembly of any one of claims 1-12, wherein the glass assembly has a head injury index HIC value of from 350 to 500.

14. A method of making a glass assembly, comprising:

providing an interlayer and a second glass plate; and

15. The method of making a glass assembly according to claim 14, wherein the step of performing a zoned ion mobility treatment on the strengthened glass in the window portion comprises:

16. The method of claim 15, wherein during the heating of the strengthened glass in the window portion and the edge portion, the window portion is heated at a temperature T1 of 450 ℃ to 550 ℃, the edge portion is heated at a temperature T2 of 30 ℃ to 320 ℃, and the window portion and the edge portion are both heated for a time T of 30min to 120min.

17. The method of making a glass assembly according to claim 14, wherein the strengthened glass meets at least one of:

surface compressive stress σ of the tempered glass ₅ 500MPa to 800MPa;

18. A vehicle, characterized in that the vehicle comprises a body and a glass assembly according to any one of claims 1-13 mounted on the body; wherein, in the glass assembly, the first glass plate is closer to the inner space of the vehicle body than the second glass plate.