阅读说明：本技术 一种用于汽车后视镜的高强度镜片加工工艺 (High-strength lens processing technology for automobile rearview mirror ) 是由 杨晓燕 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种用于汽车后视镜的高强度镜片及其加工工艺,所述高强度镜片包括玻璃基板(1)、镀膜层(2)、防爆层(3)、增强层(4)、耐磨层(5)和防污层(6)；所述高强度镜片的强度大,防爆性能好,并且有出色的耐磨和防污性能,所述加工工艺对设备要求低,可以利用现有生产设备生产,成本低,适于工业化推广。(The invention discloses a high-strength lens for an automobile rearview mirror and a processing technology thereof, wherein the high-strength lens comprises a glass substrate (1), a coating layer (2), an explosion-proof layer (3), an enhancement layer (4), a wear-resistant layer (5) and an antifouling layer (6); the high-strength lens is high in strength, good in explosion-proof performance, excellent in wear resistance and antifouling performance, low in requirements on equipment by the processing technology, low in cost and suitable for industrial popularization, and can be produced by utilizing existing production equipment.)

1. A high-strength lens for an automobile rearview mirror is characterized by comprising a glass substrate (1), a coating layer (2), an explosion-proof layer (3), a reinforcing layer (4), a wear-resistant layer (5) and an antifouling layer (6); the glass substrate (1) comprises the following raw materials in percentage by weight:

5 to 10 percent of sodium carbonate

3 to 7 percent of calcium carbonate

2 to 5 percent of diboron trioxide

2-5% of graphene oxide

1-2% of methyl methacrylate

1-3% of bisphenol A

2 to 3 percent of cobalt oxide

0.5 to 1 percent of nickel protoxide

0.4 to 0.6 percent of copper oxide

The balance being silicon dioxide.

2. The high strength lens for automobile rearview mirrors according to claim 1, wherein the glass substrate (1) comprises the following raw materials in percentage by weight:

sodium carbonate 7.5%

Calcium carbonate 5%

3.5 percent of diboron trioxide

3.5 percent of graphene oxide

Methyl methacrylate 1.5%

2 percent of bisphenol A

2.5 percent of cobalt oxide

0.75 percent of nickel protoxide

0.5 percent of copper oxide

The balance being silicon dioxide.

3. The high strength lens for automobile rearview mirror as claimed in claim 1, wherein said coating layer (2) is a chromium plating layer having a thickness of 100 nm.

4. The high strength lens for automobile rearview mirrors according to claim 1, wherein the explosion-proof layer (3) is an explosion-proof film, and the thickness of the explosion-proof film is 0.3 mm.

5. The high strength lens for automobile rearview mirrors according to claim 1, wherein the reinforcing layer (4) is a silicone film having a thickness of 0.05 mm.

6. The high strength lens for automobile rearview mirror as claimed in claim 1, wherein the abrasion resistant layer (5) is a PET resin layer, and the thickness of the resin layer is 0.1 mm.

7. The high strength lens for automobile rearview mirror as claimed in claim 1, wherein the stainproof layer (6) is a waterproof film having a thickness of 0.01 mm.

8. The process for manufacturing a high strength lens for automobile rearview mirrors as claimed in any one of claims 1 to 7, comprising the steps of:

a. on the basis of the existing float glass production method, the raw materials of the glass substrate (1) are added according to the proportion, and the thickness of the prepared glass substrate (1) is 3 mm;

b. linearly cutting the glass substrate (1) by using a glass cutting machine into a size suitable for a bending furnace, and cleaning the glass substrate by using deionized water;

c. heating, bending and molding the cleaned glass substrate (1) on a mold in a bending furnace;

d. cooling the baked and bent glass substrate (1), and cutting the glass substrate into a shape required by a customer drawing by using a special-shaped cutting machine;

e. cleaning the cut glass substrate (1) with deionized water again, and drying;

f. coating a coating layer (2) on the surface of a glass substrate (1) by using a vacuum coating machine in a coating chamber;

g. and (3) covering the surface of the coating layer (2) with an explosion-proof layer (3), an enhancement layer (4), a wear-resistant layer (5) and an antifouling layer (6) in sequence by using a vacuum coating machine.

Technical Field

The invention belongs to the field of production of automobile rearview mirrors, and particularly relates to a high-strength lens for an automobile rearview mirror and a processing technology thereof.

Technical Field

With the development of economy, China has become the first major country for producing and selling automobiles in the world, and each automobile is necessarily provided with a rearview mirror.

The rearview mirrors are tools for a driver sitting on a cab seat to directly acquire external information such as the rear, side and lower parts of the automobile. In order to facilitate the operation of a driver, prevent the occurrence of driving safety accidents and guarantee the personal safety, all countries stipulate that the rearview mirrors must be installed on the automobile, and all rearview mirrors must be capable of adjusting the direction.

The current rearview mirrors, especially the automobile outer rearview mirrors, are exposed outside the automobile, and must be subjected to wind, rain, sunlight and various stress conditions, so that better requirements are provided for the quality of the automobile outer rearview mirror lenses, especially the strength and the wear resistance of the automobile outer rearview mirror lenses, which are also important factors closely related to driving safety. In the current exterior rear view mirror patents, the problems of anti-glare and visual angle are much concerned, and the reports on the strength and the wear resistance are less.

Disclosure of Invention

Aiming at the defects, the invention discloses a high-strength lens for an automobile rearview mirror and a processing technology thereof.

The technical scheme of the invention is as follows:

a high-strength lens for an automobile rearview mirror comprises a glass substrate, a coating layer, an explosion-proof layer, an enhancement layer, a wear-resistant layer and an antifouling layer; the glass substrate comprises the following raw materials in percentage by weight:

according to the processing method, the graphene oxide, the methyl methacrylate and the bisphenol A raw materials are added in the ordinary glass, so that the graphene oxide and the silicon dioxide are tightly combined in a molten state to form a three-dimensional reticular structure, the impact toughness and the bending strength of the glass substrate are greatly improved, and meanwhile, the cobalt oxide, the nickel protoxide and the copper oxide are added in the ordinary glass, so that the prepared glass substrate is low in reflectivity and has an anti-dazzling effect.

Further, the glass substrate of the high-strength lens for the automobile rearview mirror comprises the following raw materials in percentage by weight:

the above proportion is the best proportion of the invention.

Further, the high-strength lens for the automobile rearview mirror is characterized in that the coating layer is a chromium plating layer, and the thickness of the chromium plating layer is 100 nm. In the visible range, the reflectance of chromium is about 65%, which is between that of silver (88%) and nickel (55%), making it possible to make a rear-view mirror coating with a suitable reflectance and a certain anti-glare capacity, and since chromium does not discolor, it retains its reflectance for a long time in use and is superior to silver and nickel.

Further, above-mentioned high strength lens for automobile rearview mirror, the explosion-proof layer is the rupture membrane, the rupture membrane thickness is 0.3 mm. And the anti-explosion film is used for enhancing the impact strength of the lens.

Further, according to the high-strength lens for the automobile rearview mirror, the reinforcing layer is the organic silicon film, and the thickness of the organic silicon film is 0.05 mm. The organic silicon film effectively improves the hardness and scratch resistance of the lens, makes the lens not easy to break when being impacted, and improves better adhesive force for the subsequent coating layer of the lens.

Further, in the high-strength lens for the automobile rearview mirror, the abrasion-resistant layer is a PET resin layer, and the thickness of the resin layer is 0.1 mm. The PET resin film layer can effectively improve the wear-resisting scratch-resistant performance of the lens and prolong the service life of the lens. Thereby making the whole lens more complete in function and higher in cost performance.

Further, in the high-strength lens for automobile rearview mirrors, the antifouling layer is a waterproof film, and the thickness of the waterproof film is 0.01 mm. The outermost layer is coated with the waterproof film, so that water drops and stains can be effectively prevented from remaining on the surface of the rearview mirror, and the driving safety is improved.

Further, the processing technology of the high-strength lens for the automobile rearview mirror comprises the following steps:

a. adding the raw materials added into the glass substrate according to the proportion on the basis of the existing float glass production method to obtain the glass substrate with the thickness of 3 mm;

b. linearly cutting the glass substrate into a size suitable for a bending furnace by using a glass cutting machine, and cleaning the glass substrate by using deionized water;

c. heating, bending and molding the cleaned glass substrate on a mold in a bending furnace;

d. cooling the baked and bent glass substrate, and cutting the glass substrate into a shape required by a customer drawing by using a special-shaped cutting machine;

e. cleaning the cut glass substrate with deionized water again, and drying;

f. coating a coating layer on the surface of the glass substrate in a coating chamber by using a vacuum coating machine;

g. and covering an explosion-proof layer, an enhancement layer, a wear-resistant layer and an antifouling layer on the surface of the coating layer in sequence by using a vacuum coating machine.

The processing technology has low requirement on equipment, can be produced by utilizing the existing production equipment, has low cost and is suitable for industrialized popularization.

According to the technical scheme, the invention has the following beneficial effects:

the invention provides a high-strength lens for an automobile rearview mirror, which is characterized in that graphene oxide, methyl methacrylate and bisphenol A raw materials are innovatively added in the processing of common glass, so that the graphene oxide and silicon dioxide are tightly combined in a molten state to form a three-dimensional net-like structure, the impact toughness and the bending strength of the finally prepared lens are greatly improved, and meanwhile, cobalt oxide, nickel protoxide and copper oxide are added in the processing of the common glass, so that the prepared glass substrate is low in reflectivity and has the anti-dazzling effect. Meanwhile, the processing technology of the high-strength lens of the automobile rearview mirror disclosed by the invention has low equipment requirement, can be produced by utilizing the existing production equipment, has low cost and is suitable for industrial popularization.

Drawings

FIG. 1 is a schematic structural view of a high strength lens according to the present invention;

in the figure: 1 glass substrate, 2 coating layers, 3 explosion-proof layers, 4 enhancement layers, 5 wear-resistant layers and 6 antifouling layers.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention; the experimental methods used in the following examples are all conventional methods unless otherwise specified; materials, reagents and the like used in the following examples are commercially available unless otherwise specified.