Masked double-sided mirror coated glass

Abstract

The utility model discloses a piece of mask double-sided mirror coated glass in the technical field of glass magnetron sputtering coating, which comprises a glass substrate and a coating layer, the film coating layer is sequentially compounded with a first film layer, a second film layer, a third film layer, a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer and a ninth film layer from the glass substrate to the outside, the first film layer is a niobium oxide layer, the film coating thickness of the first film layer is 55-60 nm, the second film layer is a silicon oxide layer, the film coating thickness of the second film layer is 40-50 nm, and the film coating thickness of the ninth film layer is 40-50 nm. The third film layer is a nickel-chromium layer, the coating thickness of the third film layer is 55 nm-60 nm, the fourth film layer is a silicon oxide layer, the coating thickness of the fourth film layer is 45 nm-55 nm, the fifth film layer is a niobium oxide layer, and the coating thickness of the fifth film layer is 60 nm-65 nm. The visible light reflection of the film surface of the coating area can reach 76% or above, and the visible light reflection of the glass surface can reach 72% or above; the two surfaces of the film have a mirror surface effect, and the film has excellent thermal stability and friction resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of glass magnetron sputtering coating, in particular to a mask double-sided mirror coated glass. Background Art

[0002] With the development of urbanization and the improvement of living standards, the demand for home interior decoration is increasing. Double-sided mirrors break the disadvantages of traditional silver mirrors and aluminum mirrors that cannot be tempered in other places and are easily oxidized and blackened. They are environmentally friendly in material, production and use, high temperature resistant, flat and bendable, laminated, non-rotten, long life, and widely used. They have the characteristics of strong processability and good alkali resistance. Combined with masking technology, double-sided mirrors have a new meaning.

[0003] At present, most of the household mirrors on the market are made of silver mirrors and aluminum mirrors. Most of these products have the disadvantages of being unable to be tempered in a different place, the edges are easily oxidized and rotten, the lifespan is short, and the back paint causes certain pollution to the environment.

[0004] The present invention aims to provide a low-cost, pollution-free, and continuously quantified mask double-sided mirror coated glass by matching the thickness between film layers, so as to replace the original silver mirror and aluminum mirror as furniture mirror.

[0005] Based on this, the utility model designs a mask double-sided mirror coated glass to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a masked double-sided mirror coated glass to solve the problem proposed in the above background technology that a low-cost, pollution-free, and continuously quantified masked double-sided mirror coated glass can be provided through the thickness ratio between film layers to replace the original silver mirror and aluminum mirror as furniture mirrors.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mask double-sided mirror coated glass, comprising a glass substrate and a coating layer, wherein the coating layer is compounded with a first film layer, a second film layer, a third film layer, a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer and a ninth film layer in sequence from the glass substrate to the outside, wherein the first film layer is set as a niobium oxide layer, and the coating thickness of the first film layer is 55nm to 60nm, the second film layer is set as a silicon oxide layer, and the coating thickness of the second film layer is 40nm to 50nm, the third film layer is set as a nickel-chromium layer, and the coating thickness of the third film layer is 55nm to 60nm, the fourth film layer is set as a silicon oxide layer, and the coating thickness of the fourth film layer is 45nm to 55nm, and the fifth film layer is set as a niobium oxide layer, and the coating thickness of the fifth film layer is 60nm to 65nm.

[0008] Preferably, the sum of the thicknesses of the first film layer, the second film layer, the third film layer, the fourth film layer and the fifth film layer is not less than 260 nm and not more than 290 nm.

[0009] A method for preparing the mask double-sided mirror coated glass, the method comprising the following steps:

[0010] 1) Glass substrate mask processing;

[0011] A. Cut, grind and clean the glass substrate according to the construction drawings;

[0012] B. Cover a layer of PI film evenly on the treated substrate;

[0013] C. Use CNC engraving machine to engrave the film;

[0014] D. Tear off the PI film in the area to be coated and clean it

[0015] 2) Magnetron sputtering coating layer;

[0016] A. Magnetron sputtering first film layer:

[0017] Number of targets: 4 AC rotating targets; target configuration is niobium oxide (NbOx); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 20:1; sputtering gas pressure is 4~5X10-3mbar;

[0018] B. Magnetron sputtering second film layer:

[0019] Target quantity: 4 AC rotating targets; target configuration is silicon aluminum (SiAl); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 1:1; sputtering gas pressure is 3~4X10-3mbar;

[0020] C. Magnetron sputtering third film layer:

[0021] Target quantity: 3 DC planar targets; target configuration is nickel-chromium (NiCr); process gas ratio: pure argon; sputtering gas pressure is 2~5X10-3mbar;

[0022] D. Magnetron sputtering fourth film layer:

[0023] Target quantity: 4 AC rotating targets; target configuration is silicon aluminum (SiAl); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 1:1; sputtering gas pressure is 3~4X10-3mbar;

[0024] E. Magnetron sputtering fifth film layer:

[0025] Number of targets: 3 AC rotating targets; target configuration is niobium oxide (NbOx); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 20:1; sputtering gas pressure is 4~5X10-3mbar;

[0026] Preferably, the transmission speed of the sputtering chamber is controlled at 2m / min.

[0027] Compared with the prior art, the beneficial effects of the utility model are as follows: in the coated glass, a mask knife engraving process is used to realize a clear distinction between the coated area and the white glass area, the first film layer is set as a niobium oxide layer, the fifth film layer is set as a niobium oxide layer, niobium oxide (NbOx) has excellent thermal stability and antioxidant ability, the second film layer is set as a silicon oxide layer, the third film layer is set as a nickel chromium layer, nickel chromium (NiCr) has the function of increasing the absorption of sunlight, improving the light trapping effect, and improving the visible light absorption rate, the fourth film layer is set as a silicon oxide layer, silicon oxide (SiOx) has excellent wear resistance, can better prevent the film layer from being scratched and damaged during the use of a single piece, and niobium oxide (NbOx) is a high refractive index coating material, silicon oxide (SiOx) is a low refractive index coating material, the folding of high and low refractive index film layers achieves a high reflectivity effect, and the patented technology product has a thickness of 6m Taking the coated single piece of m substrate as an example, the coating area has the following points: visible light transmittance color T∈[0.2, 0.5], a*∈[2, -1], b*∈[0, -1]; visible light glass surface reflection color Lg∈[88, 89], a*∈[-2, -3], b*∈[1, -1]; visible light film surface reflection color Lf∈[90, 92], a*∈[-1, -2], b*∈[1, 0]; finally, the glass surface and film surface of the coating area have a silver mirror effect. The visible light reflection of the film surface in the coating area of ​​the present invention can reach more than 76%, and the visible light reflection of the glass surface can reach more than 72%. Both sides have a mirror effect, and the film layer has excellent thermal stability and friction resistance; the mask area is colorless and transparent glass color, replacing the original silver mirror and aluminum mirror as a furniture mirror, which has the advantages of low cost, pollution-free, and continuous quantitative production, and has a good market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the layered structure of the coated glass.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-first film layer, 2-second film layer, 3-third film layer, 4-fourth film layer, 5-fifth film layer. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1 The utility model provides a technical solution: a mask double-sided mirror coated glass, comprising a glass substrate and a coating layer, wherein the coating layer is compounded with a first film layer, a second film layer, a third film layer, a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer and a ninth film layer in sequence from the glass substrate to the outside, wherein the first film layer 1 is set as a niobium oxide layer, and the coating thickness of the first film layer 1 is 55nm-60nm, the second film layer 2 is set as a silicon oxide layer, and the coating thickness of the second film layer 2 is 40nm-50nm, the third film layer 3 is set as a nickel-chromium layer, and the coating thickness of the third film layer 3 is 55nm-60nm, the fourth film layer 4 is set as a silicon oxide layer, and the coating thickness of the fourth film layer 4 is 45nm-55nm, the fifth film layer 5 is set as a niobium oxide layer, and the coating thickness of the fifth film layer 5 is 60nm-65nm.

[0034] Among them, the sum of the thicknesses of the first film layer, the second film layer, the third film layer, the fourth film layer and the fifth film layer is not less than 260nm and not more than 290nm.

[0035] In this coated glass, a mask knife engraving process is used to achieve a clear distinction between the coated area and the white glass area. The first film layer 1 is set as a niobium oxide layer, and the fifth film layer 5 is set as a niobium oxide layer. Niobium oxide (NbOx) has excellent thermal stability and antioxidant ability. The second film layer 2 is set as a silicon oxide layer, and the third film layer 3 is set as a nickel chromium layer. Nickel chromium (NiCr) has the function of increasing the absorption of sunlight, improving the light trapping effect, and improving the visible light absorption rate. The fourth film layer 4 is set as a silicon oxide layer. Silicon oxide (SiOx) has excellent wear resistance and can better prevent the film layer from being scratched and damaged during the use of a single piece. Niobium oxide (NbOx) is a high refractive index coating material, and silicon oxide (SiOx) is a low refractive index coating material. The folding of high and low refractive index film layers achieves a high reflectivity effect. This patented technology product uses a 6mm substrate coated single piece as the For example, the coating area has the following points: visible light transmittance color T∈[0.2, 0.5], a*∈[2, -1], b*∈[0, -1]; visible light glass surface reflection color Lg∈[88, 89], a*∈[-2, -3], b*∈[1, -1]; visible light film surface reflection color Lf∈[90, 92], a*∈[-1, -2], b*∈[1, 0]; finally, the glass surface and film surface of the coating area have a silver mirror effect. The visible light reflection of the film surface in the coating area of ​​the present invention can reach more than 76%, and the visible light reflection of the glass surface can reach more than 72%. Both sides have a mirror effect, and the film layer has excellent thermal stability and friction resistance; the mask area is colorless and transparent glass color, replacing the original silver mirror and aluminum mirror as a furniture mirror, with the advantages of low cost, pollution-free, and continuous quantitative production, and has a good market prospect.

[0036] A method for preparing the mask double-sided mirror coated glass, the method comprising the following steps:

[0037] 1) Glass substrate mask processing;

[0038] A. Cut, grind and clean the glass substrate according to the construction drawings;

[0039] B. Cover the treated substrate with a layer of PI film evenly;

[0040] C. Use CNC engraving machine to engrave the film;

[0041] D. Tear off the PI film in the area to be coated and clean it

[0042] 2) Magnetron sputtering coating layer;

[0043] A. Magnetron sputtering first film layer:

[0044] Number of targets: 4 AC rotating targets; target configuration is niobium oxide (NbOx); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 20:1; sputtering gas pressure is 4~5X10-3mbar;

[0045] B. Magnetron sputtering second film layer:

[0046] Number of targets: 4 AC rotating targets; target configuration is silicon aluminum (SiAl); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 1:1; sputtering gas pressure is 3~4X10-3mbar;

[0047] C. Magnetron sputtering third film layer:

[0048] Target quantity: 3 DC planar targets; target configuration is nickel-chromium (NiCr); process gas ratio: pure argon; sputtering gas pressure is 2~5X10-3mbar;

[0049] D. Magnetron sputtering fourth film layer:

[0050] Number of targets: 4 AC rotating targets; target configuration is silicon aluminum (SiAl); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 1:1; sputtering gas pressure is 3~4X10-3mbar;

[0051] E. Magnetron sputtering fifth film layer:

[0052] Number of targets: 3 AC rotating targets; target configuration is niobium oxide (NbOx); process gas ratio: argon and oxygen, the ratio of argon and oxygen is 20:1; sputtering gas pressure is 4~5X10-3mbar;

[0053] The glass substrate is float glass with a thickness of 4 to 15 mm.

[0054] Examples 1-4

[0055] A masked double-sided mirror coated glass and a preparation method thereof, comprising the following steps:

[0056] A: Select a glass substrate and cut it into the predetermined size using a cutting machine, with the air side of the substrate facing upwards, and clean it with a cleaning machine and use an air knife to blow dry the moisture;

[0057] B: A layer of PI film is evenly coated on the treated substrate and the film is engraved using a CNC engraving machine;

[0058] C: Tear off the PI film in the area to be coated and clean it;

[0059] D: Send the cleaned substrate into the vacuum magnetron sputtering chamber and sputter each coating layer in sequence. The specific parameters are shown in Table 1

[0060] Table 1

[0061]

[0062] The optical properties of the glasses obtained in the above examples 1-4 were measured, and the test results are shown in Table 2:

[0063] Table 2

[0064] Example 1 Example 2 Example 3 Example 4 Visible light transmittance (%) 0.3 0.2 0.4 0.5 Transmittance color a* value 0.5 0.9 1.1 1.3 Transmittance b* value 0.8 0.6 1.3 1.7 Glass surface reflection brightness L* value 88.1 88.9 89 89.4 Glass surface reflection color a* value -2.3 -2.6 -2.2 -2.6 Glass surface reflection color b* value 0.8 1.1 0.5 1.2 Film surface reflection brightness L* value 91.8 91.2 91.6 91.5 Film surface reflection color a* value -2.1 -2.5 -2.7 -2.5 Film surface reflection color b* value 1.2 0.8 1.3 1.1

[0065] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0066] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A masked double-sided mirror coated glass, comprising a glass substrate and a coating layer, characterized in that: The coating layer is compounded with a first film layer, a second film layer, a third film layer, a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer and a ninth film layer in order from the glass substrate to the outside, wherein the first film layer (1) is set as a niobium oxide layer, and the coating thickness of the first film layer (1) is 55nm-60nm, the second film layer (2) is set as a silicon oxide layer, and the coating thickness of the second film layer (2) is 40nm-50nm, the third film layer (3) is set as a nickel-chromium layer, and the coating thickness of the third film layer (3) is 55nm-60nm, the fourth film layer (4) is set as a silicon oxide layer, and the coating thickness of the fourth film layer (4) is 45nm-55nm, and the fifth film layer (5) is set as a niobium oxide layer, and the coating thickness of the fifth film layer (5) is 60nm-65nm.

2. The masked double-sided mirror coated glass according to claim 1, characterized in that: The sum of the thicknesses of the first film layer, the second film layer, the third film layer, the fourth film layer and the fifth film layer is not less than 260 nm and not more than 290 nm.

Images