CN115448583B

CN115448583B - Glass assembly, preparation method thereof and vehicle

Info

Publication number: CN115448583B
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: 2024-01-23
Anticipated expiration: 2042-10-14
Also published as: CN115448583A

Abstract

The application provides a glass assembly, 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. Wherein the first glass plate has a window portion and an edge portion disposed around the window portion, the window portion having a surface compressive stress less than a surface compressive stress of the edge portion. According to the method, the surface compression stress of the two areas is optimized according to the characteristics that the window part and the edge part are different when the window part and the edge part are impacted, so that the first glass plate is provided with the window part and the edge part with different surface compression stresses, and the surface compression stress of the window part is smaller than that of the edge part, so that the glass assembly can meet the requirements of a human head model test, a line protection test and have enough flyrock impact resistance and bonding 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 thereof and a vehicle.

Background

With the increasing demands of people on the active safety and the passive safety performance of automobiles, the demands on the safety performance of automobile glass are also increasing. However, the existing automobile glass cannot simultaneously meet the requirements of a human head model test and a line protection test, and has enough flying stone 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 component provided by the first aspect of the application is formed by mutually matching the first glass plate, the second glass plate and the middle layer, so that the glass component can simultaneously meet the requirements of a head model test, a line protection test and has enough flying stone impact resistance and bonding strength. Wherein the first glass plate is provided with a window part and an edge part, and the window part refers to a region which is far away and seen by a user through the glass and can be also understood as a central region of the glass; the edge portion refers to an area for bonding other members 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, etc., the possibility of external impact is high because the window portion is provided in the center of the first glass plate. However, because the surface compressive stress of the window portion in the first glass plate provided by the application is smaller, the energy absorption and buffering capacity of the glass of the window portion when the glass is impacted at a high speed by blunt objects are improved, the injury to people caused by severe collision is reduced, and the capacity of the glass of the window portion that the glass is resistant to low-energy impact of sharp objects such as flying stones and the like and is not broken is improved.

Second, when the glass assembly encounters an external impact, the parts adhered to the glass are easily detached, even causing breakage of the glass. However, because the surface compression stress of the edge part of the first glass plate is larger, the bonding strength of the glass in the edge part and the component is larger, and the probability of falling off the component can be reduced, so that the probability of glass breakage and splashing is reduced.

Compared with the glass component with the same surface compression stress of the window part and the edge part in the related art, according to the characteristics that the window part and the edge part are impacted, the surface compression stress of the two areas is optimized respectively, so that the surface compression stress of the window part is smaller than the surface compression stress of the edge part, the energy absorption and buffering capacity of the glass of the window part when the glass is impacted by blunt objects at high speed are improved, the injury of severe impact to people is reduced, and the capability of the glass of the window part for resisting sharp objects such as flying stones and the like and low energy impact without breakage is improved; and the glass at the edge part has enough bonding strength, so that the glass component simultaneously meets the human head model test and the line protection test and has enough flying stone impact resistance and bonding strength.

In addition, because the first and second glass sheets in this application are disposed on opposite sides of the interlayer, the interlayer can bond or retain glass and glass fragments when the glass assembly encounters an external impact to reduce the likelihood of glass shattering.

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

The first glass plate is further provided with a transition part arranged between the window part and the edge part, and the surface compression stress of the transition part is larger than that of the window part and smaller than that of the edge part.

Wherein the surface compressive stress of the area of the transition portion near the window portion is less than the surface compressive stress of the area of the transition portion remote from the window portion.

Wherein the surface compressive stress sigma of the transition portion ₃ 200MPa to 800MPa.

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

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

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

Wherein the second glass sheet is physically passed throughGlass sheet of tempered glass having surface compressive stress sigma ₄ 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 alkali aluminosilicate glass and the second glass sheet is made of soda lime silicate glass.

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

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

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

providing a 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;

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

carrying out zone ion migration treatment on the reinforced glass in the window part so that the surface compressive stress of the window part is smaller than that of the edge part, and obtaining a first glass plate;

Providing an interlayer and a second glass sheet; a kind of electronic device with high-pressure air-conditioning system

And respectively arranging the first glass plate and the second glass plate on two opposite sides of the interlayer to obtain a glass assembly.

The preparation method of the glass component provided by the second aspect of the application is simple in process and high in operability. Firstly, carrying out ion exchange treatment on glass to be treated to obtain strengthened glass, and providing a basis for carrying out partition ion migration treatment subsequently. Then, a zoned ion migration process is performed according to the window portion and the edge portion to obtain a first glass plate having a surface compressive stress of the window portion smaller than that of the edge portion. Then, the first glass plate, the second glass plate and the interlayer are assembled to obtain the glass assembly.

Therefore, the first glass plate in the glass assembly manufactured by the manufacturing method has the window part and the edge part with different surface compression stresses, and the surface compression 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 when the glass is impacted by blunt objects at high speed are improved, the injury to people caused by severe collision is reduced, and the capacity of the glass of the window part for resisting sharp objects such as flying stones and the like and not breaking due to low energy impact is improved; and the glass at the edge part has enough bonding strength, so that the glass component simultaneously meets the human head model test and the line protection test and has enough flying stone impact resistance and bonding strength.

Wherein the step of performing a zone ion migration treatment on the tempered glass in the window portion comprises:

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

In the process of heating the reinforced 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 tempered glass satisfies at least one of:

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

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

A third aspect of the present application provides a vehicle comprising a body, and a glass assembly as provided in the first aspect of the present application, the glass assembly being 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.

According to the vehicle provided by the third aspect of the application, by adopting the glass assembly provided by the first aspect of 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 compression stresses, and the surface compression 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 when the glass is impacted by blunt objects at a high speed are improved, the injury to people caused by severe collision is reduced, and the capacity of the glass of the window part, such as flying stones and the like, for resisting low-energy impact and not breaking is improved; and the glass at the edge part has enough bonding strength, so that the glass component simultaneously meets the human head model test and the line protection test and has enough flying stone impact resistance and bonding 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 sheet in an embodiment of the present application.

Fig. 3 is a schematic structural view of a first glass plate according to an embodiment of the present application.

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 in yet another embodiment of the present application.

Fig. 6 is a schematic view of a first glass sheet according to another embodiment of the present application.

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

Fig. 8 is a graph showing the impact properties of the head model of the glass assembly of the examples and comparative examples.

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

Fig. 10 is a process flow chart included in S300 in an embodiment of the present application.

Description of the reference numerals:

the glass assembly-1, the interlayer-10, the bonding surface-11 a, the non-bonding surface-11 b, the first glass plate-111, the second glass plate-112, the window portion-12, the edge portion-13, the transition portion-14, and the sub-region-15.

Detailed Description

The following are preferred embodiments of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be within the scope of the present application.

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

Before the technical scheme of the application is described, the technical problems in the related art are described in detail.

With the increasing demands of people on the active safety and the passive safety performance of automobiles, the demands on the safety performance of automobile glass are also increasing. For example, in addition to the early requirements for protecting the interior of a passenger (head model), standards such as (middle lapping) C-NCAP, (middle lapping) C-IASI, EURO-NCAP, ECE UN R127 and the like have newly increased requirements for protecting the exterior of a passenger from collision, and it is prescribed that the simulated head model collides with a certain position on the front windshield at a certain speed and direction from outside the car, and the head injury index (Head Injury Criterion, HIC) cannot exceed a certain prescribed value.

However, the existing automobile glass cannot simultaneously meet the requirements of a human head model test and a line protection test, and has enough flying stone impact resistance and bonding strength. For example, the front windshield in the related art is generally a laminated glass, such as a combination of 2.1+2.1, 2.3+2.3, 2.5+2.5, etc., limited by glass surface stress, and when the glass annealing stress is greater than 15MPa, the line preservation test is at a greater risk. If the mode that the stress of the glass is reduced and the glass can be annealed at a low speed after being formed by dead weight is adopted, the production efficiency and the forming precision are reduced. In addition, the low surface stress can cause the front windshield to have poor resistance to road flystones, and the glass is easy to break when being subjected to external sand and stone impact during running.

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 at the surface of the inner glass plate, which is close to the interlayer, the inner crash breaking performance is improved, but for the external crash, the compressive stress of the surface of the inner glass plate, which is far away from the interlayer, is still too high, and there is a risk of not breaking.

For another example, although the front windshield glass in the related art uses a chemically tempered inner plate glass made of soda-lime material, the inner crash performance is improved by reducing the surface compressive stress, the compressive stress range (for example, 350MPa to 550 MPa) of the inner plate glass is still too high for the external crash, and there is a risk in the pedestrian protection test. In addition, since the compression stress of the inner plate glass is low, the glue-beating area of the inner plate glass, which is close to the periphery of the inner surface of the vehicle after the glue-beating and loading, is easily broken, and the bracket, the rearview mirror and the like adhered to the inner plate glass are also easily broken due to external force.

In addition, more and more electric automobiles appear on the market at present, and the requirement for light weight of automobile glass is also provided. The related art laminated glass is typically a symmetrical glass, (e.g., 2.1mmsg+0.76mmpvb+2.1 mmsg), where SG is a soda lime silicate glass.

Specifically, in the glass composition of 2.1mm+0.76PVB+0.7mm, since the 0.7mm glass plate itself is not thick enough and the thin glass is hard to be strengthened by heat strengthening, the 0.7mm thin glass plate needs to be subjected to chemical strengthening treatment. Materials such as a combination of 2.1mmsg+0.76pvb+0.7mm high aluminum. Wherein, the compressive stress of the thin glass plate (sodium-calcium material) after chemical tempering can at least reach the level of 350MPa-550MPa, and even can easily reach the level of more than 700MPa if the high-aluminum material is used.

However, national standards for pedestrian protection and European standard ECER13 for human head model tests have all made demands on front windshields, wherein pedestrian protection requires that after a central visible region of the glass is impacted by an outside pedestrian, the glass is broken to absorb the impact energy (evaluated by HIC value), and meanwhile, human head model tests require that when the glass is impacted by an inside driver/passenger, the glass is broken to absorb the impact energy.

This requires weakening of the existing asymmetric laminated glass. However, the weakening is limited because national standard GB9656 also has specific requirements for impact resistance (steel ball impact test). Meanwhile, the adhesive strength of accessories around the glass is also required. Therefore, the existing automobile glass cannot meet the requirements of head model tests and line protection tests, and has enough flying stone impact resistance and bonding strength.

In view of this, in order to solve the above-described problems, the present application provides a glass assembly. Referring to fig. 1-3 together, fig. 1 is a schematic structural diagram of a glass assembly according to an embodiment of the present application. Fig. 2 is a top view of a first glass sheet in an embodiment of the present application. Fig. 3 is a schematic structural view of a first glass plate according to an embodiment of the present application.

The present embodiment provides a glass assembly 1 comprising an interlayer 10, a first glass plate 111 and a second glass plate 112, wherein the first glass plate 111 and the second glass plate 112 are respectively arranged on two opposite sides of the interlayer 10. Wherein 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 assembly 1 provided in this embodiment can be used in the field of vehicles, and can be used for protecting, observing, or matching with other components, and the glass assembly 1 can be also understood as a laminated glass. The shape and structure of the glass module 1 are not limited in this application. The glass module 1 according to the present embodiment can be applied to various fields and structures, and the present embodiment is schematically described only by applying the glass module 1 to a vehicle. However, this does not represent that the glass module 1 of the present embodiment is necessarily applied to a vehicle. In other embodiments, the present invention may be applied to other structures, such as in the field of construction, machinery, and the like.

The glass assembly 1 provided in this embodiment includes an interlayer 10 for bonding or holding glass 11, glass 11 fragments. The present embodiment is not limited to the size and shape of the intermediate layer 10. Optionally, the interlayer 10 includes one or more of polyvinyl butyral (Polyvinyl butyral, PVB), ethylene-vinyl acetate copolymer (EVA), and polymers. Alternatively, 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. Since the two glasses 11 in the present embodiment are adhered to the interlayer 10, the interlayer 10 can adhere or hold the glass 11 and fragments of the glass 11 when the glass assembly 1 collides with the outside, so as to reduce the probability of breakage and splashing of the glass 11. The thickness of the intermediate layer 10 refers to the dimension of the intermediate layer 10 in the direction in which the intermediate layer 10 and the glass 11 are aligned (as shown in the direction D in fig. 1).

The glass assembly 1 provided in this embodiment further includes a first glass plate 111 and a second glass plate 112 for protecting and fixing to other components. The shape, size, and material of the first glass plate 111 and the second glass plate 112 are not limited in this embodiment. Alternatively, the outer side of the glass assembly 1 is curved, or planar. Alternatively, the thickness of both the first glass plate 111 and the second glass plate 112 is 0.7mm-2.8mm. Specifically, the thicknesses of the first glass plate 111 and the second glass plate 112 are 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 dimensions of the first glass plate 111 and the second glass plate 112 in the arrangement direction of the interlayer 10 and the first glass plate 111.

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

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

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

The first glass plate 111 provided in this 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 may 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 sheet 111 in the window portion 12 is smaller than the surface compressive stress of the first glass sheet 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. The shape and size of the window portion 12 and the edge portion 13 are not limited in this embodiment.

Wherein 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 sheet 111 in the window portion 12 is smaller than the surface compressive stress of the first glass sheet 111 in the edge portion 13. The viewing window portion 12 can also be understood as the viewing window region of the first glass sheet 111 and the edge portion 13 can also be understood as the edge region of the first glass sheet 111.

Alternatively, when the glass assembly 1 is applied to a vehicle, the window portion 12 includes at least the test area "a" of the front windshield 11 divided by ECE R43. The present embodiment provides for improved energy absorption and buffering of the glass assembly 1 when impacted by a blunt object at high speed by defining the window portion 12 to include at least an "a" region, thereby ensuring that the window portion 12 having a lower surface compressive stress is capable of reducing injury to humans from severe impact while improving the ability of the glass assembly 1 to withstand low energy impacts from sharp objects such as flying stones without breaking. 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 near one side of the vehicle interior, the adhesive area being an area in the vehicle for adhering a pillar, a hemming, a bracket, a mirror mount, a body glue, or the like.

Further alternatively, the edge portion 13 is bonded to the first glass plate 111 of the edge portion 13 with one or more of a pillar, a hemming, a bracket, a mirror foot, a body glue, when the glass assembly 1 is applied to a vehicle.

Alternatively, the first glass plate 111 in the edge portion 13 has a width of 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 this embodiment, the width of the first glass plate 111 in the edge portion 13 is limited, so that the bonding areas arranged on the periphery of the first glass plate 111 are all arranged in the edge portion 13, and therefore the probability of falling off of the inner parts of the edge portion 13 is reduced, and the probability of glass breakage and splashing is reduced.

Optionally, the edge portion 13 is provided with a raised area raised towards the direction approaching the window portion 12, said raised area being used for the connection means. For example, when the glass assembly 1 is applied to a vehicle, the raised areas in the rim portion 13 are often used to provide a rear view mirror base for the user to view the outside. The raised areas 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 sheet 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: the probability of receiving an external impact is high because the window portion 12 is provided in the center of the first glass plate 111, due to a flying stone impact, a pedestrian impact, a head impact, etc. However, since the surface compressive stress of the window portion 12 in the first glass plate 111 provided in this embodiment is small, the energy absorbing and buffering capacity of the glass of the window portion 12 when the glass is impacted at a high speed by a blunt object is improved, the injury to a person caused by a severe collision is reduced, and the capacity of the glass of the window portion 12 to withstand a low energy impact by a sharp object such as flying stone is improved without breaking.

Second, when the glass assembly 1 encounters an external impact, the parts adhered to the glass are easily detached, even causing breakage of the glass. However, since the surface compressive stress of the edge portion 13 in the first glass plate 111 provided in this embodiment is large, the bonding strength between the glass in the edge portion 13 and the member is large, and the probability of falling off the member can be reduced, thereby reducing the probability of breakage and splashing of the glass 11.

Compared with the glass component 1 with the same surface compression stress of the window part 12 and the edge part 13 in the related art, according to the characteristics of the window part 12 and the edge part 13 which are different when being impacted, the surface compression stress of the two areas is optimized respectively, so that the surface compression stress of the window part 12 is smaller than the surface compression stress of the edge part 13, the energy absorption and buffering capacity of the glass of the window part 12 when being impacted by blunt objects at high speed are improved, the injury to people caused by severe impact is reduced, and the capacity of the glass component 1 for resisting sharp objects such as flying stones and the like and not being broken is improved; and also provides the glass of the edge portion 13 with sufficient adhesive strength so that the glass assembly 1 satisfies both the human head model test, the line protection test, and sufficient flying stone impact resistance and adhesive strength.

It should be noted that, the pedestrian protection crash test and the head mold crash test require that the glass assembly 1 is easy to break, the faster the breaking, the better the buffering effect on the head crash, after the glass breaks, the adhesion and buffering effect of the intermediate layer 10 are relied on, and the head mold can obviously reduce the crash damage after undergoing a long-path buffering, if the glass strength is too high, the breaking is not broken after the crash or the breaking time of the glass is late (the breaking is only performed after the crash is greatly deformed), the phenomenon of hard collision is generated, and the head mold is rapidly decelerated or even bounces after the crash damage is extremely large after the crash.

In addition, for the impact of road flystones, hail and the like and the strength of the vehicle body rubber, it is desirable that the glass assembly 1 is not easy to break, and the higher the strength is, the better the service life of the glass assembly 1 is, so that the loading durability is improved.

The two properties are a pair of contradictors, and the glass component 1 is required to be broken easily by the impact of blunt objects with high energy, so that the buffer effect is improved, and the tolerance effect of low energy impact can be ensured, so that the glass of the window part 12 is weakened to a certain degree to meet the requirements of head mould and pedestrian protection, and the glass of the edge part 13 of the application is not influenced in impact resistance and attachment bonding strength at the same time, and on the basis of the requirements, the technical problems are solved by adopting the zoned different-degree tempering technology; in other words, the present application provides a lightweight glass unit 1 that can meet all performance requirements.

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

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

Surface compressive stress sigma of glass in window portion 12 ₁ 100MPa-200MPa, not only can ensure that the glass has higher energy absorption and buffering capacity when being impacted by blunt objects at high speed, and reduces the injury of severe collision to people, but also improves the capability of the glass that the glass is resistant to low-energy impact of sharp objects such as flying stones and the like and is not broken, and can reduce the process difficulty and the production cost. If the surface compressive stress of the glass in the window portion 12 is less than 100MPa, the process difficulty is increased, the production cost is increased, and the capability of the glass for resisting low-energy impact of sharp objects such as flying stones and the like and not breaking is reduced; if the surface compressive stress of the glass in the window portion 12 is greater than 200MPa, the energy absorption of the glass when impacted by a blunt object at a high speed is reducedThe receiving and buffering capacity increases the injury of severe collision to people.

Surface compressive stress sigma of glass in edge portion 13 ₂ The bonding strength between the glass and the component in the edge part 13 can be ensured to be larger at 500MPa-800MPa, and the process difficulty and the production cost can be reduced. 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 bonding 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 easily broken and splashed.

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

The first glass sheet 111 provided in this embodiment also includes a transition portion 14 for transition, cushioning. The shape and size of the transition portion 14 are not limited in this embodiment. Wherein the surface compressive stress of the transition portion 14 is greater than the surface compressive stress of the window portion 12 and less than the surface compressive stress of the edge portion 13; in other words, the surface compressive stress of the transition portion 14 is provided between the window portion 12 and the edge portion 13.

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

Alternatively, 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 sigma of glass in transition portion 14 ₃ 200MPa to 800MPa, noOnly the buffer function of the transition portion 14 can be ensured, and the process difficulty and the production cost can be reduced. If the surface compressive stress of the glass in the transition portion 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 more than 800MPa, the buffer effect of the transition portion 14 may not be achieved.

In the embodiment, the transition portion 14 is disposed between the window portion 12 and the edge portion 13, and the surface compressive stress of the transition portion 14 is disposed between the window portion 12 and the edge portion 13, so as to realize buffering and transition between the low compressive stress and the high compressive stress regions in the glass, and improve the stability of the glass, thereby improving the stability of the glass assembly 1.

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

In the glass in the transition portion 14, the localized surface compressive stresses are unequal, with the surface compressive stress near the window portion 12 being less than the surface compressive stress far from the window portion 12; in other words, the surface compressive stress of the glass portion near the window portion 12 having a lower surface compressive stress is smaller, and the surface compressive stress of the glass portion near the edge portion 13 having a higher surface compressive stress is larger.

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

In this embodiment, the surface compressive stress in the transition portion 14 is set, so that the transition portion 14 can more fully exert the buffer effect between the window portion 12 and the edge portion 13, further improving the stability of the glass 11, and further improving the stability of the glass assembly 1.

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

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

The window portion 12 has an area ratio of 20% -50% in the first glass plate 111, so that the glass can have higher energy absorption and buffering capacity when impacted by blunt objects at high speed, injury to people caused by severe collision is reduced, meanwhile, the capability of resisting low-energy impact of sharp objects such as flying stones and the like and not breaking of the glass is improved, the process difficulty is reduced, and the production cost is reduced. If the area ratio of the window portion 12 in the first glass plate 111 is smaller than 20%, the area is too small to ensure that the window portion can cover the impact area required by the pedestrian protection requirement and the head model test requirement, and the pedestrian protection requirement and the head model test requirement cannot be met; if the area fraction of the glass in the window portion 12 is greater than 50%, the area is too large, and the area of other areas is occupied, so that the process difficulty is increased and the production cost is increased.

The area ratio of the edge portion 13 to the first glass plate 111 is 15% -40%, so that the bonding strength between the glass and the component in the edge portion 13 can be ensured to be large, the process difficulty can be reduced, and the production cost can be reduced. If the area ratio of the edge portion 13 to the first glass plate 111 is smaller than 15%, the area is too small to ensure the bonding strength between the glass in the edge portion 13 and the component, so that the component is easy to fall off and the glass is easy to splash; if the area fraction of the glass in the edge portion 13 is greater than 40%, the area is too large, and the area of other areas is occupied, so that the process difficulty is increased and the production cost is increased.

The area ratio of the transition part 14 to the first glass plate 111 is 10% -65%, so that the transition part 14 can play a role in buffering, 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 smaller than 10%, the area is too small to ensure that the transition portion 14 can play a role of buffering, so that the stability of the glass is reduced, and the service life of the glass is reduced; if the area fraction of glass in the transition portion 14 is greater than 65%, the area is too large, occupying the area of other areas, increasing the process difficulty and increasing the production cost.

Optionally, referring to fig. 7, fig. 7 is a schematic structural view of a first glass plate according to another embodiment of the present application. In one embodiment, the first glass plate 111 has an opposite bonding surface 11a and a non-bonding surface 11b, and the interlayer 10 is bonded to the bonding surface 11a; wherein the bonding surface 11a includes a plurality of sub-regions 15, and each sub-region 15 has an equal surface compressive stress to the non-bonding surface 11b to which the sub-region 15 is directly corresponding.

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

In the present embodiment, the glass bonding surface 11a and the non-bonding surface 11b are defined to have the same local surface compressive stress, so that the stability of the glass is improved, and the stability of the glass assembly 1 is improved.

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

Alternatively, the viewing window portion 12 has a compressive stress layer depth d1 of 25 μm, or 30 μm, or 35 μm, or 40 μm, or 45 μm, or 50 μm. The depth d2 of the compressive stress layer 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 portion 12 is 20 μm to 55 μm, which not only ensures that the glass assembly 1 satisfies the head mold test and the line protection test at the same time, but also has sufficient flying stone 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 head model test, the line protection test, and has sufficient flying stone 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 portion 13 is 15 μm to 50 μm, which not only ensures that the glass assembly 1 satisfies the head mold test, the line protection test, and has sufficient flying stone impact resistance and bonding strength, but also 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 the head model test, the line protection test, and has sufficient flying stone impact resistance and bonding strength; if the depth of the compressive stress layer of the edge portion 13 is greater than 50 μm, the process difficulty increases and the production cost increases.

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

In this embodiment, 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, so that according to the different characteristics of the window portion 12 and the edge portion 13 when being impacted, the energy absorption and buffering capacity of the glass of the window portion 12 when being impacted at a high speed by a blunt object is further improved, the injury to people caused by severe impact is further reduced, and the capacity of the glass of the window portion 12 when being impacted at a low energy by sharp objects such as flying stones is further improved.

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 8MPa to 25MPa.

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

Surface compressive stress sigma of second glass sheet 112 ₄ The glass component 1 can be ensured to simultaneously meet the requirements of head mould tests and line protection tests, has enough flyrock impact resistance and bonding strength, can reduce the process difficulty and production cost, and is 8-25 MPa. 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 simultaneously satisfy the head model test, the line protection test, and has sufficient flying stone impact resistance and bonding strength.

Alternatively, in one embodiment, the thickness of the second glass sheet 112 is greater than the thickness of the first glass sheet 111. In the present embodiment, the thickness of the first glass plate 111 and the thickness of the second glass plate 112 are defined to be different, so that the two glasses 11 in the glass assembly 1 are arranged asymmetrically. This arrangement helps to improve the resistance of the glass assembly 1 to the impact of flying rocks and to improve the ability of the glass assembly 1 to withstand low energy impacts of sharp objects such as flying rocks without breaking.

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

Alternatively, the thickness of the first glass plate 111 is 0.8mm, or 0.9mm, or 1.0mm, or 1.1mm. The second glass sheet 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, which not only ensures high capability of resisting sharp objects such as flying stones and the like of the glass assembly 1 against low-energy impact without breaking, but also can reduce process difficulty and production cost. If the thickness of the first glass plate 111 is less than 0.7mm, it may result in a decrease in the ability of the glass assembly 1 to withstand low energy impact 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 is increased and the production cost is increased.

The thickness of the second glass plate 112 is 1.8mm-2.8mm, which not only ensures high capability of resisting sharp objects such as flying stones and the like of the glass assembly 1, such that the glass assembly cannot break, but also can reduce the process difficulty and the production cost. If the thickness of the second glass plate 112 is less than 1.8mm, it will result in a decrease in the ability of the glass assembly 1 to withstand low energy impact of 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 assembly 1 has a head injury index HIC value of 350 to 500. The HIC value of the glass assembly 1 in this embodiment is 350 to 500, which means that the glass assembly 1 provided in this embodiment has better energy absorbing and buffering capabilities when impacted by a blunt object at a high speed, reduces injury to people from severe collision, and can protect pedestrians.

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

In the relevant parameters of each example and each comparative example in table 1, the first glass plate 111 has a window portion 12 of about 30% area and an edge portion 13 of about 20% area.

The test performance parameters in table 2 include: a human head model test was performed as specified in GB9656 for evaluating the protection ability for an interior occupant. Pedestrian protection collision test was performed as prescribed by (middle steam ground) C-NCAP for evaluating the protection ability against outside pedestrians. The test is carried out by adopting 227g of quenching steel balls and an impact test device used in the GB9656 impact resistance test, the steel balls freely fall to the outer surface of the laminated glass, the test is started from a falling height of 0.5m, if the steel balls are not broken, the height of 0.5m is increased for each impact, the test is continued until the steel balls are broken, the broken height is recorded and used for evaluating the breaking capacity of resisting the impact of flying stones, and the strength is considered to be insufficient when the broken height is lower than 2.5 m. After the base is bonded according to the normal process, the 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 glass vertical plane direction at a speed of 5mm/min until the glass breaks or the base falls off, and the tensile force value at the moment is recorded and is used for evaluating the bonding strength of the edge part 13 and the frame gluing area, and the strength is considered to be insufficient when the tensile force is smaller than 660N.

Table 1 relevant parameters for each example and each comparative example

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Table 2 performance parameters for each example and each comparative example

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As is clear from the above tables 1 and 2, the surface compressive stress of the second glass plate 112 in comparative example 1 was too low, and the second glass plate 112 was liable to break when impacted, and the impact resistance was insufficient. The window portion 12 of the first glass sheet 111 of comparative example 2 is too low in stress, and the surface of the glass member 1 near the inside of the vehicle is susceptible to tensile failure upon impact, and the impact resistance is insufficient. The window portion 12 of the first glass plate 111 in comparative example 3 is too highly stressed, resulting in too high a HIC value for pedestrian protection experiments. The edge portion 13 of the first glass plate 111 in comparative example 4 was too low in stress, resulting in insufficient adhesive strength. The surface compressive stress of the second glass plate 112 in comparative example 5 was too high, resulting in too high a HIC value in the pedestrian protection experiment.

The first glass plate 111 of 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 low compressive stresses, resulting in an excessively high HIC in the pedestrian protection experiment. The first glass plate 111 of comparative example 7 does not have the window portion 12 and the edge portion 13 having different surface compressive stresses, and the compressive stress is high, resulting in failure of the head mold and an excessively high HIC value.

Comparative example 8 is a common symmetrical glass assembly 1, the glass surface has a certain compressive stress, and the HIC is high. Comparative example 9 is a common symmetrical glass assembly 1, the glass surface has been sufficiently annealed and the stress is low, resulting in insufficient impact resistance and adhesion strength. The symmetrical glass assembly 1 herein refers to the first glass plate 111 and the second glass plate 112 having equal thickness.

As shown in fig. 8, the glass assembly 1 provided in example 3 and example 4 was able to generate many annular and radial cracks centering on the impact point, indicating that the glass assembly 1 of example 3 and example 4 was acceptable in the human head model test, while the glass assembly 1 of comparative example 7 was free of annular cracks, indicating that the glass assembly 1 of comparative example 7 was unacceptable in the human head model 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 simultaneously satisfy the human head model test and the line protection test, and has sufficient flying stone impact resistance and sufficient bonding strength. In other words, the glass assembly 1 provided in the present embodiment can simultaneously satisfy a human head model experiment, a pedestrian protection experiment, and an HIC value of 500 or less; and has impact fracture resistance and attachment adhesion strength superior to those of the related art glass assembly 1.

The application also provides a preparation method of the glass component. Referring to fig. 1 again, and referring to fig. 9, fig. 9 is a process flow diagram of a method for manufacturing a glass assembly according to an embodiment of the present application. The embodiment provides a method for manufacturing a glass assembly, which comprises S100, S200, S300, S400 and S500. The details of S100, S200, S300, S400, 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 sodium calcium silicate and aluminosilicate. The window portion and the edge portion are already described in detail above and are not described in detail herein.

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

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

The embodiment carries out ion exchange treatment on the glass to be treated to obtain strengthened glass, and provides a basis for the follow-up zone ion migration treatment.

And S300, carrying out zone ion migration treatment on the reinforced glass in the window part so that the surface compressive stress of the window part is smaller than that of the edge part, and obtaining a first glass plate.

According to the embodiment, the zoned ion migration treatment is carried out according to the window part and the edge part, so that the first glass plate with the surface compressive stress of the window part smaller than that of the edge part is obtained.

Optionally, in one embodiment, the tempered glass in the edge portion is subjected to a zone ion migration treatment. In another embodiment, the window portion and the tempered glass in the edge portion are each subjected to a zone ion migration treatment.

S400, providing an intermediate layer and a second glass plate.

The intermediate layer and the second glass sheet have already been described in detail above and will not be described in detail here.

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

Alternatively, 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 component provided by the embodiment has the advantages of simple process and strong operability. The first glass plate in the glass assembly manufactured by the manufacturing method has a window part and an edge part with different surface compression stresses, and the surface compression 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 when the glass is impacted at a high speed by blunt objects are improved, the injury to people caused by severe impact is reduced, and the capacity of the glass of the window part 12 for resisting sharp objects such as flying stones and the like and not breaking due to low energy impact is improved; and also provides the glass of the edge portion 13 with sufficient adhesive strength so that the glass assembly 1 satisfies both the human head model test, the line protection test, and sufficient flying stone impact resistance and adhesive strength.

Referring to fig. 10, fig. 10 is a process flow chart included in S300 in an embodiment of the present application. Wherein in S300, the step of performing a zone ion migration treatment on the tempered glass in the window portion includes:

and S310, heating the window part and the reinforced glass in the edge part, wherein the heating temperature of the window part is larger than that of the edge part.

In the embodiment, the preset ion migration of the reinforced glass in the window part is realized by a heat treatment mode, so that the glass in the window part can have preset surface compressive stress.

Alternatively, in one embodiment, the strengthened glass is placed in a zoned heating-cooling system and ion migration is performed at the window portion to achieve the desired stress profile of 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 is not equal.

Optionally, the manufacturing method of the partition-heating and 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 a window part, and arranging a blowing cooling hole at an edge part to realize an ion migration process of a reinforced glass controllable area, thereby obtaining the first glass plate.

In one embodiment, in the process of heating the tempered 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 edge portion is 30min to 120min.

Alternatively, the window portion is heated to 480 ℃, or 500 ℃, or 530 ℃. The heating temperature of the edge portion was 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 compressive 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 compression 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 ℃, so that the glass of 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 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 edge portion is 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 compression stress; if the heating time of the window part and the edge part is longer than 120min, the energy consumption is increased and the production cost is increased.

Optionally, in one embodiment, the zoned ion migration process is: the tempered glass is placed in a zonable heating-cooling system and the window portion is heated to a temperature of 450 ℃ to 550 ℃ to cause a predetermined ion transport of the tempered glass in the window portion. For example, potassium ions and sodium ions in the glass are exchanged, so that potassium ions enriched on the surface of the glass migrate into the glass after the ion exchange, and the concentration of potassium ions on the surface of the glass is reduced, thereby greatly reducing the surface compressive stress, and increasing the thickness of the compressive stress layer, namely increasing the depth of the compressive stress layer. For another example, sodium ions in the glass are exchanged with lithium ions to substantially reduce the surface compressive stress of the glass, and the thickness of the compressive stress layer is increased, i.e., the depth of the compressive stress layer is increased. During the heating, the incubation is maintained for 30-120min to maintain the migration process until cooling is initiated after the desired low compressive stress is achieved. And in the process, maintaining the temperature of the edge part to be less than or equal to 320 ℃ until the temperature of the window part is reduced to 320 ℃, taking out the reinforced glass, and integrally cooling the reinforced glass to room temperature, thereby obtaining the third glass.

In one embodiment, the tempered glass meets at least one of the following: surface compressive stress sigma of the tempered glass ₅ 500MPa-800MPa. The depth d3 of the compressive stress layer of the tempered glass is 10-40 mu m.

Alternatively, the surface compressive stress of the strengthened glass is 550MPa, or 600MPa, or 650MPa, or 700MPa, or 750MPa.

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

The tempered glass according to the present embodiment, which is obtained by subjecting a glass to be treated to ion exchange treatment, has a surface compressive stress σ ₅ Compared with common glass, 500MPa-800MPa, the reinforced glass provided by the embodiment has better impact resistance.

Optionally, 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 when the tempered glass is subjected to the zoned ion migration treatment. For example, the depth of the compressive stress layer becomes greater in both the window portion and the edge portion. For another example, the window portion has a compressive stress layer depth greater than the compressive stress layer depth of the edge portion.

The application also provides a vehicle comprising a vehicle body and the glass component provided by the application, wherein the glass component is arranged on the vehicle 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, and the glass assembly is arranged on one side of the rear view mirror. In other words, the glass component is a front windshield.

Optionally, the glazing assembly has a loading angle in the range of 20 ° -40 °; the loading angle is an included angle between a central line and a horizontal plane, wherein the central point is formed by connecting the central points of the top edge and the bottom edge of the glass component.

Optionally, after loading the glass assembly, the highest point of the glass assembly is in a height range of 1.3m-2.0m from the ground.

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 compression stresses, and the surface compression 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 when the glass is impacted by blunt objects at a high speed are improved, the injury to people caused by severe collision is reduced, and the capability of the glass of the window part for resisting sharp objects such as flying stones and the like and low energy impact without breakage is improved; and the glass at the edge part has enough bonding strength, so that the glass component simultaneously meets the human head model test and the line protection test and has enough flying stone impact resistance and bonding strength.

The foregoing has outlined rather broadly the more detailed description of the embodiments of the present application in order that the principles and embodiments of the present application may be explained and illustrated herein, the above description being provided for the purpose of facilitating the understanding of the method and core concepts of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

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;

the first glass plate is provided with a window part and an edge part arranged around the window part, the surface compression stress of the window part is smaller than that of the edge part, and the first glass plate is used for improving the capability of the glass plate of the window part to resist low-energy impact and not break and improving the bonding strength of the glass plate of the edge part and a component;

wherein the surface compressive stress sigma of the window portion ₁ 100MPa to 200MPa, the surface compressive stress sigma of the edge part ₂ 500MPa-650MPa.

2. The glass assembly of claim 1, 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.

3. The glass assembly of claim 2, 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 the window portion.

4. The glass assembly of claim 2, wherein the transition portion has a surface compressive stress σ ₃ 200MPa to 800MPa.

5. The glass assembly of claim 2, wherein the window portion has an area ratio in the first glass sheet of 20% to 50%, the edge portion has an area ratio in the first glass sheet of 15% to 40%, and the transition portion has an area ratio in the first glass sheet of 10% to 65%.

6. The glass assembly according to claim 1, wherein the window portion has a compressive stress layer depth d1 of 20 μm to 55 μm and the edge portion has a compressive stress layer depth d2 of 15 μm to 50 μm.

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

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

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

10. The glass assembly of claim 1, 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.

11. The glass assembly of claim 1, wherein the first glass sheet and the second glass sheet are each made of soda lime silicate glass.

12. The glass assembly of any one of claims 1-11, wherein the glass assembly has a head injury index HIC value of 350-500.

13. A method of making a glass assembly according to claim 1, comprising:

14. The method of making a glass assembly according to claim 13, wherein the step of zoning the strengthened glass in the window portion comprises:

15. The method of making a glass assembly according to claim 14, wherein during heating the glass reinforcement 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 both the window portion and the edge portion is 30min to 120min.

16. The method of making a glass assembly according to claim 13, wherein the strengthened glass meets at least one of:

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

17. A vehicle comprising a body, and the glass assembly of any one of claims 1-12, the glass assembly being mounted to 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.