KR20150079283A - Attachment structure of reinforced glass having metallic oxide coating layer - Google Patents

Abstract

The present invention relates to an attachment structure of a tempered glass having impact resistance and blocking of transmission of ultraviolet rays and infrared rays to improve durability, and more particularly, A metal oxide coating layer; And a sealant layer; By having a structure in which layers are stacked one after the other, a shielding region can be formed to prevent the impact resistance of the shielding region from being lowered, as well as to improve the impact resistance and the like of the tempered glass layer, It is possible to improve the durability of the attachment structure of the tempered glass by preventing the curing of the sealant layer and the lowering of the adhesive strength of the sealant layer caused by the curing of the sealant layer by blocking ultraviolet rays and infrared rays, To an attachment structure of a tempered glass having a metal oxide coating layer capable of further improving the appearance merchantability of the tempered glass.

Description

[0001] The present invention relates to an attachment structure of a reinforced glass having a metal oxide coating layer,

The present invention relates to an attachment structure of a tempered glass requiring high impact resistance and the like, and more particularly, A metal oxide coating layer; And a sealant layer or the like to improve the durability and the like of the sealant layer through the transmission and interruption of infrared rays and ultraviolet rays .

Tempered glass refers to glass which is cut according to the purpose and polished each side for the strengthening process, and the polished glass is washed, dried and printed, followed by heating in a furnace and quenching. The same impact strength is about 5 to 8 times, the bending strength is about 3 to 5 times, and the thermal shock resistance is about twice that of glass.

The tempered glass usually forms a thickness of about 3 to 19 mm and is not easily broken by ordinary glass due to its compressive ability on the surface and its tensile strength inside it, It is used for a variety of purposes such as showcases of various gates such as hospitals and school gates where people come and go frequently, showcases of residential spaces, glass furniture, and tempered glass for industry and automobiles.

The automotive tempered glass tends to be mounted on roofs of automobiles in the form of panoramic sunroofs as well as windows of automobiles. A technique for fixing tempered glass to a vehicle body has been required to apply the tempered glass to the roof of an automobile.

Therefore, in the conventional automobile, the reinforced glass is fixed to the body by using a sealant which is a polymer material. However, since the sealant is made of a polymer material or the like, when the sealant is cured due to ultraviolet rays or infrared rays upon exposure to sunlight and the adhesion between the tempered glass and the sealant is reduced, the tempered glass is separated from the vehicle body There was a problem that I could get out.

In order to prevent the problem of reducing the adhesiveness of such a sealant, a technique of forming a shielding region for shielding sunlight by bonding a black ceramic coating layer between a tempered glass and a sealant has been developed.

However, since the ceramic pigment contained in the ceramic coating layer is a mixture of various materials, stress can be generated between the interface between the tempered glass and the ceramic coating layer, and the surface of the ceramic coating layer is uneven and gas holes Defects of the semiconductor device are easily generated.

Stress or air bubbles between the interfaces can act as a weak part to weaken the impact strength of the tempered glass, thus causing a problem that the tempered glass is easily broken during the steel ball drop test.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to improve the impact resistance of a shielded region formed by forming a metal oxide coating layer on one surface of a tempered glass layer, To improve the durability and the like of the attachment structure.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, A metal oxide coating layer; And a sealant layer; And the like, and has a structure that is stacked in order.

In addition, the present invention preferably further comprises a ceramic coating layer between the metal oxide coating layer and the sealant layer.

Here, the metal oxide coating layer preferably includes a metal oxide, an inorganic binder, a solvent, and the like.

At this time, the metal oxide is preferably one selected from the group consisting of SiO _2, Al ₂ O _3, Na ₂ O, CaO, MgO, K ₂ O, TiO _2, ZrO _2, MnO and P ₂ O _5, etc. .

The inorganic binder is preferably a silicon-based inorganic binder.

The solvent is preferably water and / or alcohol.

The thickness of the metal oxide coating layer is preferably more than 0 탆 and not more than 10 탆.

As described above, according to the present invention, by including a metal oxide coating layer or the like, a shielding region can be formed to prevent the impact resistance of the shielding region from being deteriorated, as well as to improve the impact resistance of the tempered glass layer, The present invention has the advantage that the durability of the attachment structure of the tempered glass can be improved by effectively shielding visible light, ultraviolet rays, infrared rays, and the like, thereby preventing hardening of the sealant layer and lowering of adhesive force of the sealant layer caused thereby.

In addition, the present invention further includes a ceramic coating layer on one side of the metal oxide coating layer, thereby making the color of the metal oxide layer selected by the metal oxide more clear, thereby improving the appearance merchantability of the tempered glass. The appearance of the tempered glass according to the patterning of the shielding region to be formed can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

The present invention relates to an automotive tempered glass having a metal oxide coating layer with improved impact resistance.

FIG. 1 is a cross-sectional view of an attachment structure of a tempered glass having a metal oxide coating layer according to the present invention. As shown in FIG. 1, the present invention includes a tempered glass layer 10; A metal oxide coating layer 20; And a sealant layer (30); And is preferably laminated on the upper surface of the body panel 40 in order. The present invention is characterized in that the metal oxide coating layer (20) and the sealant layer A ceramic coating layer therebetween; And the like.

More specifically, the tempered glass layer 10 is a layer made of tempered glass, and is a glass layer having improved resistance to external force and temperature change due to a compressive stress generated on the surface thereof and a tensile stress generated therein, It is preferable to be located outside.

The metal oxide coating layer 20 is disposed between the tempered glass layer 10 and the sealant layer to suppress or block transmission of sunlight, ultraviolet rays, infrared rays, or the like of the sunlight to generate heat insulation and heat shielding effects, The function of preventing hardening of the layer and the adhesion of the sealant layer caused thereby and the function of further enhancing the strength of the tempered glass layer 10.

In addition, the metal oxide coating layer 20 preferably includes a metal oxide, an inorganic binder, and a solvent.

The metal oxide is preferably in the form of a powder. The metal oxide is a main material that blocks the transmission of sunlight, ultraviolet rays, infrared rays, and the like, and generates heat insulation and heat shielding effect. Examples of the material include SiO ₂ , Al ₂ O ₃ , It is preferably one metal oxide selected from the group consisting of Na ₂ O, CaO, MgO, K ₂ O, TiO ₂ , ZrO ₂ , MnO and P ₂ O ₅ . The oxide coating layer 20 can have a unique color.

Unlike the organic binder, the inorganic binder is not easily decomposed even at a high temperature glass forming temperature, and is excellent in resistance to curing which can be caused by ultraviolet rays or the like. In the present invention, the inorganic binder is a matrix which forms a basis of the metal oxide coating layer 20, and acts as an adhesive for allowing the metal oxide in the powder form to adhere to one surface of the tempered glass layer 10.

The inorganic binder may be any of those known in the art, but is more preferably a silicon-based inorganic binder, and most preferably is silicates.

The thickness of the metal oxide coating layer 20 is preferably in a range of more than 0 μm to 10 μm. In order to form the thickness of the metal oxide coating layer 20, it is preferable to control the viscosity of the metal oxide coating layer 20 through a solvent . At this time, when the thickness of the metal oxide coating layer 20 is more than 10 mu m, cracks may occur on the surface of the coating layer.

In addition, the solvent serves to dissolve the inorganic binder and to control the viscosity, and any of those known in the art can be used, but water and / or an alcohol is preferably used.

On the other hand, the sealant layer is a layer made of a silane. The sealant is a polymeric material having not only adhesion but also airtightness, watertightness and vibration absorbability. In the present invention, the sealant layer is positioned between the metal oxide coating layer 20 and the vehicle body panel, one side of the sealant layer adheres to the metal oxide coating layer 20, and the other side of the sealant layer adheres to one side of the vehicle body panel do. That is, the sealant layer allows one surface of the body panel and the tempered glass layer 10 coated with the metal oxide coating layer 20 to adhere to each other.

In addition, the sealant may be any of those known in the art, but it is more preferably a silicone sealant because the silicone sealant is superior to the organic sealant in terms of ultraviolet stability, cold resistance and weather resistance. The silicone sealant is preferably a mixture of a silicone polymer, a filler, and a curing agent.

In addition, it is preferable to further include a ceramic coating layer between the metal oxide coating layer 20 and the sealant layer. More specifically, the ceramic coating layer is coated or printed on the surface of the metal oxide coating layer bonded to the sealant layer. The ceramic coating layer printed on the metal oxide coating layer 20, The hue of the metal oxide layer selected according to the type of oxide can be further improved to improve appearance merchantability and the appearance of the metal oxide layer can be further improved by patterning the metal oxide layer, Shielding performance and the like of the transmission of visible light, ultraviolet light and infrared light by the light source can be further improved.

The ceramic coating layer preferably contains a medium such as a pigment, an additive and a solvent in a glass flux.

Meanwhile, it is preferable that the attachment structure of the tempered glass having the metal oxide coating layer 20 according to the present invention is applied to a place where a high impact resistance or the like is required than the conventional tempered glass and various colors are required, .

[Example]

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not construed as being limited by these embodiments.

The impact resistance of steel reinforced glass having the metal oxide coating layer according to the present invention and the conventional steel reinforced glass comparative example were compared.

division 1.5m 1.75m 2.0m 2.25m 2.5m 3.0m 3.5m 4.0m Comparative Example 1 ○ ○ × - - - - - Comparative Example 2 ○ ○ × - - - - - Example 1 ○ ○ ○ ○ ○ ○ ○ × Example 2 ○ ○ ○ ○ ○ ○ × - ○: Not damaged
X: Broken

Table 1 shows the results of the comparison between Comparative Example 1 and Comparative Example 2 in which a pattern was printed by using a ceramic coating layer on a solar glass and a privacy glass, a solar glass and a privacy glass, The results of the steel ball drop test for comparing the impact resistance against the steel ball falling in Examples 1 and 2 in which a pattern was printed using a metal oxide coating layer containing titanium oxide (TiO ₂ ) as one of oxides .

For the comparative example and the embodiment having the same size and thickness, the steel balls having a weight of 227 g are impacted to the comparative examples and the examples while falling freely from a height of 1.5 m to 0.25 m at a height of 4.0 m, The breakage of the comparative example and the example was confirmed.

As a result of this test, in the case of Comparative Example 1 and Comparative Example 2, when the steel ball fell freely at a height of 2.0 m and was impacted, the comparative example 1 and the comparative example 2 were broken. However, in the case of Examples 1 and 2, when the steel balls fell free from the height of 4.0 m and 3.5 m, respectively, and the impact was applied, the above Example 1 and Example 2 were broken.

From these results, it was confirmed that the example according to the present invention is superior in impact resistance to steel ball falling than the comparative example.

Although the present invention has been described in connection with the specific embodiments of the present invention, it is to be understood that the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Various modifications and variations are possible.

10: Tempered glass layer
20: metal oxide coating layer
30: sealant layer
40: Body panel

Claims (7)

A tempered glass layer; A metal oxide coating layer; And a sealant layer
Wherein the laminated structure has a structure in which the laminated structure is laminated in order.
The method according to claim 1,
Wherein the attachment structure of the tempered glass further comprises a ceramic coating layer between the metal oxide coating layer and the sealant layer.
The method according to claim 1,
Wherein the metal oxide coating layer comprises a metal oxide, an inorganic binder and a solvent.
The method of claim 3,
The metal oxide is reinforced, characterized in that one selected from the group consisting of _{SiO 2, Al 2 O 3,} Na 2 O, CaO, MgO, K 2 O, TiO 2, ZrO 2, MnO and P ₂ O ₅ glass .
The method of claim 3,
Wherein the inorganic binder is a silicon-based inorganic binder.
The method of claim 3,
Wherein the solvent is water and / or alcohol.
The method according to claim 1,
Wherein the thickness of the metal oxide coating layer is more than 0 mu m and not more than 10 mu m.

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