CN115784636A - Bent glass plate and surface treatment method - Google Patents
Bent glass plate and surface treatment method Download PDFInfo
- Publication number
- CN115784636A CN115784636A CN202211402763.XA CN202211402763A CN115784636A CN 115784636 A CN115784636 A CN 115784636A CN 202211402763 A CN202211402763 A CN 202211402763A CN 115784636 A CN115784636 A CN 115784636A
- Authority
- CN
- China
- Prior art keywords
- glass sheet
- bent glass
- bent
- glass plate
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 280
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004381 surface treatment Methods 0.000 title claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 100
- 239000011248 coating agent Substances 0.000 claims abstract description 95
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims description 81
- 239000007789 gas Substances 0.000 claims description 32
- 238000004140 cleaning Methods 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 12
- 239000005340 laminated glass Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000005341 toughened glass Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000002737 fuel gas Substances 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 6
- 239000005388 borosilicate glass Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000005368 silicate glass Substances 0.000 claims description 4
- 239000006018 Li-aluminosilicate Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005354 aluminosilicate glass Substances 0.000 claims description 3
- 239000005385 borate glass Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 13
- 238000009736 wetting Methods 0.000 abstract description 5
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 9
- 239000002390 adhesive tape Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000004431 polycarbonate resin Substances 0.000 description 5
- 238000009210 therapy by ultrasound Methods 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 229920005668 polycarbonate resin Polymers 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000006058 strengthened glass Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001659 ion-beam spectroscopy Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001846 repelling effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000005345 chemically strengthened glass Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007607 die coating method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000010407 vacuum cleaning Methods 0.000 description 1
Images
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
The invention relates to the technical field of glass surface treatment, in particular to a surface treatment method of a bent glass plate, which comprises the following steps: s1, preparing a bent glass plate with a convex surface and a concave surface; s2, treating the convex surface and/or the concave surface of the bent glass plate by using flame, wherein the surface tension of the convex surface or the concave surface of the bent glass plate after flame treatment is more than or equal to 60mN/m, and the temperature of the surface of the bent glass plate is less than or equal to 90 ℃. The invention can remove oil stains or organic pollutants attached to the surface of the bent glass plate, improve the wetting property of the surface of the bent glass plate, and ensure that the contact angle of water drops on the surface of the bent glass plate is less than 10 degrees, thereby meeting the coating requirement of the subsequent functional coating of the bent glass plate. The invention also provides a bent glass plate with a functional coating, which has good appearance and performance. The invention can improve the surface treatment speed while meeting the flame treatment effect, and can be suitable for bent glass plates with different shapes, sizes and profiles.
Description
The technical field is as follows:
the invention relates to the technical field of glass surface treatment, in particular to a bent glass plate and a surface treatment method.
The background art comprises the following steps:
currently, in order to provide the automotive glass with functions of infrared ray blocking, ultraviolet ray blocking, water repelling, antifogging, antireflection, and the like, a coating having a specific function, such as an infrared ray blocking coating, an ultraviolet ray blocking coating, a water repelling coating, an antifogging coating, an antireflection coating, and the like, may be formed on the surface of the glass plate by a paint.
Before the coating is coated on the surface of the glass plate, the surface of the glass plate needs to be thoroughly cleaned, even the effect of wetting the surface of the glass plate is achieved, so that the surface tension of the glass plate meets the requirement, the coating can be better wetted on the surface of the glass plate, and the coating is ensured to have good appearance and performance. Conventional surface cleaning techniques are difficult to meet for curved glass sheets to be coated with coatings, and plasma techniques have been used to clean the surfaces of glass sheets, for example, patent CN1914131A discloses a method for continuous vacuum cleaning of substrates, mainly suitable for deposition of thin films on the substrate surfaces by PECVD (plasma enhanced chemical vapor deposition), CVD (chemical vapor deposition), magnetron sputtering or ion plating, ion beam sputtering and dual ion beam sputtering. For example, patent CN111842389B discloses a surface treatment method for a bent glass sheet, but when the glass has irregular curvature and large deformation, the surface treatment is not uniform during the use.
For the curved glass plate to be coated with paint, the surface of the glass plate is cleaned by using flame technology in the prior art, for example, patent CN107857485A discloses a borosilicate glass cleaning process, which removes impurities on the surface of the borosilicate glass by high-temperature flame, sterilizes the surface of the glass, improves the production efficiency and reduces the heat energy loss. But the temperature of the glass surface after cleaning reaches 500-800 ℃, belonging to the technical field of glass product processing.
The invention content is as follows:
the invention aims to solve the technical problem that the existing surface cleaning treatment technology cannot meet the requirements of large-size irregular bent glass plates and the like, and provides a surface treatment method suitable for irregular bent glass plates.
The invention aims to solve another technical problem of providing a bent glass plate with a functional coating, which has good appearance and performance.
The technical scheme adopted by the invention for solving the technical problem is as follows: a surface treatment method of a bent glass sheet, comprising the steps of:
s1, preparing a bent glass plate with a concave surface and a convex surface;
s2, treating the convex surface and/or the concave surface of the bent glass plate by using flame, wherein the surface tension of the convex surface and/or the concave surface of the bent glass plate after flame treatment is more than or equal to 60mN/m, and the temperature of the surface of the bent glass plate is less than or equal to 90 ℃. When the surface temperature of the bent glass plate after flame treatment is too high, the bent glass plate is subjected to a subsequent water cleaning process, and if the bent glass plate is toughened glass, spontaneous explosion easily occurs; if the bent glass sheet is a laminated glass, the interlayer film of the laminated glass is deformed.
Further, a step S01 is also included between the step S1 and the step S2,
s01, cleaning and drying the bent glass plate; the cleaning comprises at least one water washing step, and the particle size of particle impurities in water is less than or equal to 1 mu m.
Further, step S02 is also included after step S2,
s02, cleaning the bent glass plate after flame treatment, and cooling to below 25 ℃.
Further, the surface water drop contact angle of the convex surface and/or the concave surface of the curved glass plate after flame treatment is less than 10 degrees.
Further, a functional coating is coated on the convex surface and/or the concave surface of the bent glass plate after flame treatment, and the functional coating is an infrared ray barrier coating, an ultraviolet ray barrier coating, a hydrophobic coating, an antifogging coating or an antireflection coating.
Further, the flame temperature at the time of treating the convex surface and/or the concave surface of the curved glass sheet with the flame in step S2 is 500 to 2000 ℃.
Further, in the step S2, a burner is used for mixing gas and combustion-supporting gas, the gas and the combustion-supporting gas in the burner are mixed and combusted to generate the flame, and the combustion-supporting gas is air.
Further, the burner includes a combustion nozzle and an igniter.
Further, the air flow through the combustion nozzle is 200-500mL/min. When the air flow at the combustion nozzle is too small, the effective length of the flame is shortened, the requirement precision on the flame treatment track is higher, and the uniformity of the surface of the bent glass plate treated by the flame is poor; when the air flow at the combustion nozzle is too large, the effective length of the flame is lengthened, but air and gas are wasted. Preferably, the air flow at the combustion nozzle is 250-400mL/min.
Further, the pressure dew point of the air passing through the combustion nozzle is less than or equal to-40 ℃, and the maximum oil content in the air is less than or equal to 0.1mg/m 3 。
Further, the flow ratio of the air to the gas passing through the combustion nozzle is 10-200. When the flow ratio of the air to the fuel gas at the combustion nozzle is too small, insufficient combustion is caused, and fuel gas waste is caused; when the flow ratio of air to gas at the combustion nozzle is too large, the temperature of the flame is insufficient and the flame treatment effect is poor. Preferably, the flow ratio of said air to said gas through said combustion nozzle is 12-18.
Further, the pressure of the air passing through the combustion nozzle is controlled to be 1-10bar, and the pressure fluctuation is controlled to be +/-0.5 bar.
Further, the relative moving speed of the combustion nozzle and the bent glass sheet is 200 to 1000mm/s. When the relative movement speed of the combustion nozzle and the bent glass plate is too low, the temperature of the bent glass plate after flame treatment is too high, and then the bent glass plate is subjected to a water cleaning process, if the bent glass plate is toughened glass, spontaneous explosion easily occurs; if the bent glass sheet is a laminated glass, the interlayer film in the laminated glass is deformed. When the relative movement speed of the combustion nozzle and the bent glass sheet is too fast, the surface treatment effect of the bent glass sheet is poor, and the requirements cannot be met. Preferably, the relative moving speed of the combustion nozzle and the bent glass sheet is 400 to 800mm/s.
Further, the distance between the combustion nozzle and the surface of the bent glass sheet is 50 to 300mm. When the distance between the combustion nozzle and the surface of the bent glass plate is too short, the igniter at the combustion nozzle risks colliding with the bent glass plate, and meanwhile, the temperature of flame is low, so that the surface treatment requirement cannot be met; when the distance between the combustion nozzle and the surface of the bent glass sheet is too long, the temperature of the flame is insufficient, and the processing requirements cannot be met. Preferably, the distance between the combustion nozzle and the surface of the bent glass sheet is 100-200mm.
Further, the length of the combustion nozzle is 100mm-500mm. The length of the combustion nozzle needs to be customized according to the specification and the size of a product to be processed, and when the length of the combustion nozzle is too short, the time for moving is long, and the production frequency cannot keep up with the production frequency; when the length of the combustion nozzle is too long, energy consumption is increased, and cost is high.
Further, the heat value of the fuel gas passing through the combustion nozzle is more than or equal to 20000kcal/Nm 3 . When the calorific value of the flame gas is too low, the temperature of the flame is low, and impurities in the flame are increased, which is easy to bring foreign matters to the clean surface of the bent glass plate.
Further, in step S2, the angle between the flame and the surface of the bent glass sheet is controlled to be 60 to 90 °.
Further, the combustion nozzle is less than 2m away from the internal combustion gas leakage detection device when in operation.
Further, the ambient gas flow velocity of the combustion nozzle is 0-0.3m/s.
Further, during the treatment of the convex and/or concave surfaces of the curved glass sheet with the flame, the combustion nozzle is kept stationary and the curved glass sheet is moved; or
The bent glass sheet remains stationary and the combustion nozzle moves.
The invention also provides a bent glass plate with a functional coating, which comprises a bent glass plate with a concave surface and a convex surface and the functional coating arranged on the convex surface and/or the concave surface of the bent glass plate, wherein the functional coating is an infrared ray blocking coating, an ultraviolet ray blocking coating, a hydrophobic coating, an antifogging coating or an antireflection coating, and the bent glass plate is prepared by adopting the preparation method of the bent glass plate.
Further, the bent glass sheet is transparent glass or colored glass having a visible light transmittance of 70% or more.
Further, the bent glass sheet is transparent glass or colored glass having a visible light transmittance of 20% or less.
Further, the thickness of the functional coating is 1-100 μm.
Further, the bent glass plate is single-piece tempered glass or laminated glass.
Further, the bent glass sheet is soda-lime-silicate glass, aluminosilicate glass, borate glass, borosilicate glass, lithium-aluminosilicate glass, alkali-free glass, or quartz glass.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the surface treatment method of the bent glass plate uses flame to carry out surface treatment on the bent glass plate, quickly treats the surface tension of the bent glass plate to be more than 60mN/m, and the temperature of the surface of the bent glass plate is less than or equal to 90 ℃. The invention can remove oil stains or organic pollutants attached to the surface of the bent glass plate, improves the surface tension and the wetting property of the bent glass plate, and ensures that the contact angle of water drops on the surface of the bent glass plate is less than 10 degrees, thereby meeting the coating requirement of the subsequent functional coating of the bent glass plate. The invention can meet the flame treatment effect and improve the surface treatment speed at the same time, and can be suitable for bent glass plates with different shapes, sizes and profiles. Before the paint of the functional coating is coated on the surface of the bent glass plate, the surface of the bent glass plate is thoroughly cleaned by adopting flame treatment, and the effect of wetting the surface of the bent glass plate is achieved, so that the surface tension of the bent glass plate meets the requirement, the paint of the functional coating can be better wetted on the surface of the bent glass plate, and the bent glass plate with the functional coating is ensured to have good appearance and performance.
Description of the drawings:
FIG. 1 is a schematic representation of the steps of a method of surface treatment of a curved glass sheet according to the present invention;
FIG. 2 is a schematic structural view of a bent glass sheet according to the present invention;
FIG. 3 is a schematic structural view of a curved glass sheet having a functional coating according to the present invention;
fig. 4 is a schematic structural view of the burner according to the present invention.
The specific implementation mode is as follows:
in the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus should not be construed as limiting the present invention. In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; may be directly connected or indirectly connected through an intermediate. In the description of the present invention, "glass" may be inorganic glass, or may be plastic glass made of organic polymer or the like. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, a surface treatment method of a bent glass sheet according to the present invention comprises the steps of:
s1, preparing a curved glass sheet 100 having a convex surface 101 and a concave surface 102:
as shown in fig. 2, the curved glass sheet 100 has a convex surface 101 and an opposite concave surface 102, and the convex surface 101 faces the exterior of the vehicle and the concave surface 102 faces the interior of the vehicle after the curved glass sheet 100 is mounted to the vehicle body.
The bent glass sheet 100 is subjected to various processing steps, such as cutting, washing, edging, high-temperature heat softening and then bending, quenching, annealing, or other heat treatment, so as to be suitable for use as an automotive glass, and the bent glass sheet 100 can be used as a front windshield, a side window, a rear windshield, a sunroof, or the like in an automobile.
S01, cleaning and drying the bent glass plate:
before performing the flame treatment on the bent glass sheet 100 prepared in the step S1, it is preferable to clean and dry the bent glass sheet 100 to remove dust, dirt, and the like on the surface of the bent glass sheet 100 and to maintain the bent glass sheet 100 in a clean state before performing the flame treatment; wherein the cleaning comprises at least one water washing step, and the particle size of particle impurities in water is less than or equal to 1 mu m; the drying may be performed by hot air blow drying or the like.
S2, treating the convex surface and/or the concave surface of the bent glass plate by using flame:
after the flame acts on the convex surface 101 and/or the concave surface 102 of the curved glass plate 100, the surface tension of the convex surface 101 and/or the concave surface 102 of the curved glass plate 100 is greater than or equal to 60mN/m, and the temperature of the surface of the curved glass plate 100 after the flame treatment is less than or equal to 90 ℃. Specifically, the temperature of the surface of the bent glass sheet 100 after the flame treatment may be 80 ℃, 70 ℃, 60 ℃, 50 ℃, 40 ℃, 30 ℃, 25 ℃ or the like. The temperature of the surface of the bent glass plate 100 after the flame treatment is preferably 25 ℃, so that the bent glass plate 100 after the flame treatment is subjected to a surface water droplet contact angle test and a dyne value test by using a dyne pen.
Preferably, the surface tension of the convex 101 and/or concave 102 surfaces of the curved glass sheet 100 is greater than or equal to 64mN/m. When the surface temperature of the bent glass plate 100 after the flame treatment is too high, the bent glass plate 100 is subjected to a subsequent water cleaning process, and if the bent glass plate 100 is tempered glass, spontaneous explosion is easy to occur; if the bent glass plate 100 is a laminated glass, the interlayer film of the laminated glass is deformed. According to the invention, through flame treatment, not only can oil stains or organic pollutants attached to the surface of the bent glass plate 100 be removed, but also the surface tension and the wetting performance of the bent glass plate 100 can be improved, so that the contact angle of water drops on the surface of the bent glass plate 100 is smaller than 10 degrees, and the coating requirement of the subsequent functional coating of the bent glass plate 100 is met.
As shown in fig. 3, in order to make the curved glass plate 100 have the required functions, a functional coating 200 is coated on the convex surface 101 and/or the concave surface 102 of the curved glass plate 100 after the flame treatment, and the functional coating 200 is an infrared ray blocking coating, an ultraviolet ray blocking coating, a hydrophobic coating, an anti-fog coating or an anti-reflection coating. The present invention may be exemplified by applying the above-described functional coating to the convex surface 101 and/or the concave surface 102 of the curved glass plate 100 by a flow coating method, a spin coating method, a spray coating method, a roll coating method, a meniscus coating method, a die coating method, a wiping method, or the like.
In the embodiment of the application, the flame temperature when the convex surface 101 and/or the concave surface 102 of the bent glass plate 100 is subjected to flame treatment is 500-2000 ℃, so that oil stains or organic pollutants attached to the surface of the bent glass plate 100 can be effectively removed, and the wettability of the surface of the bent glass plate 100 is improved.
In the embodiment of the application, adopt the combustor to mix gas and combustion-supporting gas, in the combustor the gas with combustion-supporting gas mixedly burns and generates flame, combustion-supporting gas is the air. Preferably, the gas is natural gas. The burner includes a combustion nozzle 103 and an igniter 104, as shown in fig. 3, the curved glass sheet 100 is subjected to flame treatment on the convex surface 101 and/or the concave surface 102 using the combustion nozzle 103, and the curved glass sheet 100 is subjected to surface treatment using the igniter 104 to ignite the combustion nozzle 103.
As shown in fig. 4, the present invention uses a combustion nozzle 103 to flame a convex surface 101 and/or a concave surface 102 of a curved glass sheet 100, and rapidly treats the surface tension of the convex surface 101 and/or the concave surface 102 to 60mN/m or more, thereby satisfying the coating requirements of the subsequent functional coating.
In the present embodiment, the air flow through the combustion nozzle 103 is 200 to 500mL/min. When the air flow at the combustion nozzle 103 is too small, the effective length of the flame is reduced, the required precision of the flame treatment track is higher, and the uniformity of the surface of the flame-treated bent glass sheet 100 is poor; when the air flow at the combustion nozzle 103 is too large, the effective length of the flame is lengthened, but air and natural gas are wasted. Preferably, the air flow at the combustion nozzle 103 is 250-400mL/min.
In the embodiment of the present application, the pressure dew point of the air passing through the combustion nozzle 103 is not more than-40 deg.C, and the maximum oil content in the air is not more than 0.1mg/m 3 。
In the present embodiment, the flow ratio of the air to the gas passing through the combustion nozzle 103 is 10 to 200. When the flow ratio of the air to the gas at the combustion nozzle 103 is too small, insufficient combustion is caused, and gas waste is caused; when the flow ratio of air to gas at the combustion nozzle is too large, the temperature of the flame is insufficient and the flame treatment effect is poor. Preferably, the flow ratio of said air to said gas through said combustion nozzle is 12-18.
In the present embodiment, the pressure of the air passing through the combustion nozzle 103 is controlled to be 1 to 10bar, and the pressure fluctuation is controlled to be ± 0.5bar.
In the present embodiment, the relative movement speed of the combustion nozzle 103 and the bent glass sheet 100 is 200 to 1000mm/s. When the relative movement speed of the combustion nozzle 103 and the bent glass sheet 100 is too slow, the temperature of the bent glass sheet 100 after flame treatment is too high, and then the bent glass sheet 100 is subjected to a water washing process, if the bent glass sheet 100 is tempered glass, spontaneous explosion is likely to occur; if the bent glass sheet 100 is a laminated glass, the interlayer film in the laminated glass may be deformed. When the relative movement speed of the combustion nozzle 103 and the bent glass sheet 100 is too fast, the surface treatment effect of the bent glass sheet 100 is poor and cannot be satisfied. Preferably, the relative moving speed of the combustion nozzle 103 and the bent glass sheet 100 is 400 to 800mm/s.
In the present embodiment, the distance between the combustion nozzle 103 and the surface of the bent glass sheet 100 is 50 to 300mm. When the distance between the combustion nozzle 103 and the surface of the bent glass sheet 100 is too close, the igniter 104 at the combustion nozzle 103 risks colliding with the bent glass sheet 100, and the temperature of the flame is also low, failing to meet the surface treatment requirements; when the distance between the combustion nozzle 103 and the surface of the bent glass sheet 100 is too long, the temperature of the flame may be insufficient to meet the processing requirements. Preferably, the distance between the combustion nozzle 103 and the surface of the curved glass sheet 100 is 100-200mm.
In the present embodiment, the length of the combustion nozzle 103 is 100mm to 500mm. The length of the combustion nozzle 103 needs to be customized according to the specification and the size of a product to be processed, and when the length of the combustion nozzle 103 is too short, the time for moving is long, and the product frequency cannot keep up; when the length of the combustion nozzle 103 is too long, energy consumption is increased and cost is high.
In the embodiment of the present application, the heating value of the fuel gas passing through the combustion nozzle 103 is not less than 20000kcal/Nm 3 . When the calorific value of the flame gas is too low, the temperature of the flame is low and impurities in the flame are increased, which easily brings foreign substances to the clean surface of the bent glass sheet 100.
In the present embodiment, the flame is controlled to have an angle of 60 to 90 ° with respect to the surface of the bent glass sheet 100 in step S2.
In the present embodiment, the distance between the combustion nozzle 103 and the internal combustion gas leakage detection device is less than 2m during operation.
In the present embodiment, the ambient gas flow velocity of the combustion nozzle 103 is 0 to 0.3m/s.
In the present embodiment, during the treatment of the convex surface 101 and/or the concave surface 102 of the curved glass sheet 100 with a flame, the combustion nozzle 103 is kept fixed and the curved glass sheet 100 is moved; or
The bent glass sheet 100 is held stationary and the burner nozzle 103 is moved.
S02, cleaning the bent glass plate after flame treatment, and cooling to below 25 ℃:
after the curved glass sheet 100 is subjected to the flame treatment in the step S2, the functional coating may be prepared to be applied, and before the functional coating is applied, the curved glass sheet 100 after the flame treatment is cleaned and cooled to below 25 ℃, so that the residual dust on the surface of the curved glass sheet 100 can be removed again, and the surface temperature of the curved glass sheet 100 can be reduced.
The application also provides a curved glass plate with a functional coating, as shown in fig. 4, the curved glass plate comprises a curved glass plate 100 with a concave surface 102 and a convex surface 101 and a functional coating 200 arranged on the convex surface 101 and/or the concave surface 102 of the curved glass plate 100, the functional coating 200 is an infrared ray blocking coating, an ultraviolet ray blocking coating, a hydrophobic coating, an antifogging coating or an antireflection coating, and the curved glass plate 100 is prepared by adopting the preparation method of the curved glass plate.
In the present embodiment, the bent glass sheet 100 is clear glass or tinted glass having a visible light transmittance of 70% or more. The curved glass sheet 100 may be used for a front windshield, a side window, and a rear windshield of an automobile.
In the present embodiment, the curved glass sheet 100 is a transparent glass or a colored glass having a visible light transmittance of 20% or less. The bent glass sheet 100 can be used for a corner window glass and a sunroof glass of an automobile.
In the present embodiment, the functional coating layer 200 has a thickness of 1 to 100 μm.
In the present embodiment, the curved glass sheet 100 is a single piece of tempered glass or laminated glass.
In the present embodiment, the curved glass sheet 100 is soda-lime silicate glass, aluminosilicate glass, borate glass, borosilicate glass, lithium aluminosilicate glass, alkali-free glass, or quartz glass. Of these, soda-lime-silicate glasses are particularly preferred. The bent glass plate 100 may be a strengthened glass, and the strengthened glass may be chemically strengthened glass or physically strengthened glass, in view of improving strength.
The curved glass plate 100 in the present application may be organic glass (resin), such as polycarbonate resin, polystyrene resin, aromatic polyester resin, acrylic resin, polyester resin, polyarylate resin, polycondensate of halogenated bisphenol a and ethylene glycol, acrylic urethane resin, or acrylic resin containing halogenated aryl groups. Among them, polycarbonate resins such as aromatic polycarbonate resins and acrylic resins such as polymethyl methacrylate acrylic resins are preferable, polycarbonate resins are more preferable, and bisphenol a polycarbonate resins are particularly preferable. In addition, the resin can also be used in combination with 2 or more.
Examples
The present invention is specifically illustrated in examples 1 to 12 and comparative examples 1 to 3, but the present invention is not limited to the following examples.
The procedure for carrying out examples 1 to 12 is as follows:
the method comprises the following steps: placing a bent glass plate to be coated with a coating on a positioning station;
step two: automatically conveying the bent glass plate to a washing machine, brushing the surface of the bent glass plate to be coated with the coating, removing large-particle impurities on the surface of the bent glass plate, washing with pure water, and drying the surface of the bent glass plate to be coated with the coating by using clean compressed air;
step three: repositioning the bent glass sheet, and performing flame treatment on the surface of the bent glass sheet by using a combustion nozzle;
step four: conveying the bent glass plate subjected to flame treatment to a washing machine, washing with pure water, and drying the surface of the glass to be coated with the coating by using clean compressed air;
step five: the surface of the bent glass sheet was tested for water drop contact angle and surface temperature. If the temperature is less than or equal to 25 ℃, selecting a proper dyne pen to lightly scratch the surface of the bent glass plate after flame treatment, and checking whether the liquid shrinks or not after waiting for three seconds: if the test pencil contracts, the test pencil with a smaller dyne value is taken again for repeated test until the drawn line of the dyne pencil on the surface of the bent glass plate does not contract within three seconds; if the test pen does not shrink, the test pen with the larger dyne value is taken again for repeated test until the drawn line of the dyne pen on the surface of the bent glass plate shrinks within three seconds, and the test value is the dyne value-2 corresponding to the shrinkage.
The dyne pen comprises: the color of the handwriting is bluish purple, and the production home is American FLEXART.
Examples 1 to 12 curved glass plates made of 3.2mm green glass were selected, the concave surfaces of the curved glass plates of examples 1 to 12 were subjected to flame treatment using different air flow rates, air-fuel ratios, distances, and moving speeds, respectively, and the contact angles of water droplets on the surface, the surface temperatures, and dyne values of the flame-treated concave surfaces were measured and recorded in table 1. The air-fuel ratio in table 1 refers to the flow ratio of air to gas at the combustion nozzle; the distance is the distance between the combustion nozzle and the concave surface of the curved glass sheet; the moving speed refers to the moving speed of the curved glass sheet with respect to which the combustion nozzle is moved while the curved glass sheet is kept stationary.
Table 1: flame treatment results of examples 1 to 12
As can be seen from table 1: under the same air flow rate, air-fuel ratio and moving speed and at a smaller distance, the dyne value of the surface of the bent glass plate after flame treatment is higher, the contact angle of water drops on the surface of the bent glass plate is smaller, and the surface of the bent glass plate has better treatment effect. Under the same air-fuel ratio, distance and moving speed, when the air flow is 300L/min, the dyne value of the surface of the bent glass plate after flame treatment is the highest, the contact angle of water drops on the surface is the smallest, and the surface effect of the bent glass plate after flame treatment is the best.
Example 7 and comparative examples 1 to 3
In order to verify particularly severe conditions, the surface of the bent glass sheet to which the coating is applied is subjected to a special treatment, i.e. the surface of the normal bent glass sheet is subjected to the use of a lubricating oil to obtain a special glass.
Selecting flame treatment conditions of air flow of 300L/min, air-fuel ratio of 15, distance between a combustion nozzle and a bent glass plate of 15cm and moving speed of 600mm/s to carry out flame treatment on the surface of the special glass; comparative example 1 is a polishing treatment of the surface of special glass using a conventional cerium oxide polishing powder; comparative example 2 is ultrasonic treatment of the surface of special glass, the ultrasonic treatment conditions are 0.01mol/L sodium hydroxide, 50 ℃ and 1h of ultrasonic time; comparative example 3 is a wiping treatment of the surface of a special glass with absolute ethanol. The treated glass was coated with the same batch of coatings, the same process was used to obtain coated products, which were tested for adhesion and boiling resistance, and the results are reported in table 3.
And (3) testing the adhesive force: the adhesion of the coating is tested according to the GB9286-88 standard, and the evaluation standard of the adhesion is listed in Table 2. A hundred grid knife model 5123, produced by BYK, germany, was used. Firstly, fixing the coated glass surface on an experimental platform, selecting 1mm cutter head multiplied by 1 (11 edges), controlling the pressure when the blade scratches the glass, and scratching the coated surface by about 10cm by the hundred-grid knife at an angle perpendicular to the first scratching to form 100 square grids. Cutting a specified adhesive tape of about 10cm, pressing and sticking the adhesive tape on the scribed lattices to ensure that the adhesive tape completely covers the lattices, and then quickly pulling up the adhesive tape within 0.5-1s, wherein the pulling-up angle of the adhesive tape forms an angle of 60 degrees with the coating surface; finally, brushing and washing the residual impurities in the cutting area by using a brush, observing 100 square lattices cut by a hundred-lattice knife by using a magnifying glass, and judging the adhesive force grade of the coating by referring to an evaluation table 2.
Table 2: coating adhesion rating Scale
Boiling resistance test: the coated glass was placed in water at 100 ℃ for a boiling test and the time to break and fall off the coating was recorded.
Table 3: test results of example 7 and comparative examples 1 to 3
| Surface treatment scheme | Whether or not with a coating | Adhesion test | Boil resistance test | |
| Example 7 | Flame treatment | Is provided with | Level 0 | 4 hours |
| Comparative example 1 | Polishing treatment | Is provided with | Stage 2 | 1.5 hours |
| Comparative example 2 | Ultrasonic treatment | Is provided with | Level 1 | 2.5 hours |
| Comparative example 3 | Wiping treatment | Is provided with | 4 stage | 0.5 hour |
As can be seen from table 2: different surface treatment schemes are adopted for special glass, so that the adhesive force of the coating has different effects, and the adhesive force test effect of the coating on the glass after flame treatment is obviously superior to that of polishing treatment, ultrasonic treatment and wiping treatment; the boiling resistance test effect of the glass with the coating after flame treatment is obviously superior to that of polishing treatment, ultrasonic treatment and wiping treatment; meanwhile, the better the adhesion test result of the coating is, and the longer the boiling resistance test time of the coating is.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood that the present invention is not limited to the details of the foregoing description, and various changes, modifications, substitutions and the like may be made without departing from the spirit and scope of the invention.
Claims (26)
1. A surface treatment method for a bent glass sheet, characterized by comprising the steps of:
s1, preparing a bent glass plate with a concave surface and a convex surface;
s2, treating the convex surface and/or the concave surface of the bent glass plate by using flame, wherein the surface tension of the convex surface and/or the concave surface of the bent glass plate after flame treatment is more than or equal to 60mN/m, and the temperature of the surface of the bent glass plate is less than or equal to 90 ℃.
2. A surface treatment method for a bent glass sheet according to claim 1, characterized in that: between step S1 and step S2 there is further included a step S01,
s01, cleaning and drying the bent glass plate; the cleaning comprises at least one water washing step, and the particle size of particle impurities in water is less than or equal to 1 mu m.
3. The surface treatment method for a bent glass sheet according to claim 1, characterized in that: step S02 is also included after step S2,
s02, cleaning the bent glass plate after flame treatment, and cooling to below 25 ℃.
4. A surface treatment method for a bent glass sheet according to claim 1, characterized in that: and the contact angle of water drops on the surface of the convex surface and/or the concave surface of the bent glass plate after flame treatment is less than 10 degrees.
5. A surface treatment method for a bent glass sheet according to claim 1, characterized in that: and (2) coating a functional coating on the convex surface and/or the concave surface of the bent glass plate after flame treatment, wherein the functional coating is an infrared ray barrier coating, an ultraviolet ray barrier coating, a hydrophobic coating, an antifogging coating or an antireflection coating.
6. A surface treatment method for a bent glass sheet according to claim 1, characterized in that: the flame temperature when the curved glass sheet is treated with flame at the step S2 is 500 to 2000 ℃.
7. A surface treatment method for a bent glass sheet according to claim 1, characterized in that: and S2, mixing gas and combustion-supporting gas by adopting a combustor, wherein the gas and the combustion-supporting gas in the combustor are mixed and combusted to generate the flame, and the combustion-supporting gas is air.
8. The surface treatment method for a bent glass sheet according to claim 7, characterized in that: the burner includes a combustion nozzle and an igniter.
9. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the air flow through the combustion nozzle is 200-500mL/min.
10. Surface treatment method for bent glass sheets according to claim 8The method is characterized in that: the pressure dew point of the air passing through the combustion nozzle is less than or equal to-40 ℃, and the maximum oil content in the air is less than or equal to 0.1mg/m 3 。
11. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the flow ratio of the air and the fuel gas passing through the combustion nozzle is 10-20.
12. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the pressure of the air passing through the combustion nozzle is controlled at 1-10bar, and the pressure fluctuation is controlled at +/-0.5 bar.
13. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the relative movement speed of the combustion nozzle and the bent glass sheet is 200-1000mm/s.
14. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the distance between the combustion nozzle and the surface of the bent glass sheet is 50-300mm.
15. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the length of the combustion nozzle is 100mm-500mm.
16. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the heat value of the fuel gas passing through the combustion nozzle is more than or equal to 20000kcal/Nm 3 。
17. A surface treatment method for a bent glass sheet according to claim 1, characterized in that: in step S2, the included angle between the flame and the surface of the bent glass plate is controlled to be 60-90 degrees.
18. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: and the distance between the combustion nozzle and the gas leakage detection device is less than 2m when the combustion nozzle works.
19. The surface treatment method for a bent glass sheet according to claim 8, characterized in that: the ambient gas flow velocity of the combustion nozzle is 0-0.3m/s.
20. The method for surface treatment of a curved glass sheet according to claim 13, wherein: during the treatment of the convex and/or concave surfaces of a curved glass sheet with a flame, the combustion nozzle remains stationary and the curved glass sheet moves; or
The bent glass sheet remains stationary and the combustion nozzle moves.
21. A curved glass sheet having a functional coating, comprising a curved glass sheet having a concave surface and a convex surface and a functional coating provided on the convex surface and/or the concave surface of the curved glass sheet, the functional coating being an infrared ray blocking coating, an ultraviolet ray blocking coating, a hydrophobic coating, an antifogging coating or an antireflection coating, the curved glass sheet being produced by the production method for a curved glass sheet according to any one of claims 1 to 20.
22. The curved glass sheet with a functional coating according to claim 21, wherein the curved glass sheet is clear glass or tinted glass having a visible light transmission of greater than or equal to 70%.
23. The curved glass sheet with a functional coating according to claim 21, wherein the curved glass sheet is clear glass or tinted glass having a visible light transmission of less than or equal to 20%.
24. The curved glass sheet with a functional coating according to claim 21, wherein the functional coating has a thickness of 1 to 100 μ ι η.
25. The curved glass sheet with a functional coating according to claim 21, wherein the curved glass sheet is a single piece of tempered glass or laminated glass.
26. The curved glass sheet with a functional coating according to claim 21, wherein the curved glass sheet is a soda-lime-silicate glass, an aluminosilicate glass, a borate glass, a borosilicate glass, a lithium aluminosilicate glass, an alkali-free glass, or a quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211402763.XA CN115784636A (en) | 2022-11-10 | 2022-11-10 | Bent glass plate and surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211402763.XA CN115784636A (en) | 2022-11-10 | 2022-11-10 | Bent glass plate and surface treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115784636A true CN115784636A (en) | 2023-03-14 |
Family
ID=85436540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211402763.XA Pending CN115784636A (en) | 2022-11-10 | 2022-11-10 | Bent glass plate and surface treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115784636A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3078694A (en) * | 1955-07-06 | 1963-02-26 | Philips Corp | Method of flame sealing of glass tube |
| US20110033694A1 (en) * | 2008-05-16 | 2011-02-10 | Naiyong Jing | Silica Coating For Enhanced Hydrophilicity/Transmittivity |
| WO2016001055A1 (en) * | 2014-07-01 | 2016-01-07 | Schott Ag | Method for treating the surface of thin glass substrates |
| US20180312427A1 (en) * | 2015-10-06 | 2018-11-01 | Sgd S.A. | Glass baby bottle covered with a coating for protection against heat shock, and related manufacture method |
| CN111842389A (en) * | 2020-07-06 | 2020-10-30 | 福耀玻璃工业集团股份有限公司 | Surface treatment method for bent glass plate |
-
2022
- 2022-11-10 CN CN202211402763.XA patent/CN115784636A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3078694A (en) * | 1955-07-06 | 1963-02-26 | Philips Corp | Method of flame sealing of glass tube |
| US20110033694A1 (en) * | 2008-05-16 | 2011-02-10 | Naiyong Jing | Silica Coating For Enhanced Hydrophilicity/Transmittivity |
| WO2016001055A1 (en) * | 2014-07-01 | 2016-01-07 | Schott Ag | Method for treating the surface of thin glass substrates |
| US20180312427A1 (en) * | 2015-10-06 | 2018-11-01 | Sgd S.A. | Glass baby bottle covered with a coating for protection against heat shock, and related manufacture method |
| CN111842389A (en) * | 2020-07-06 | 2020-10-30 | 福耀玻璃工业集团股份有限公司 | Surface treatment method for bent glass plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107443948B (en) | Board with printing layer and display device | |
| JP7392233B2 (en) | bent base material | |
| US11274063B2 (en) | Glass plate with antifouling layer | |
| CN107533161B (en) | Curved substrate with film, method for manufacturing same, and image display device | |
| KR102433785B1 (en) | Laminated Glass Article and Method for Forming the Same | |
| EP0798272B1 (en) | Laminate and process for its production | |
| CN101585664B (en) | Manufacture method of bendable low-emission coated laminated glass with regionally removed coat | |
| KR20110137820A (en) | Glass having anti-glare surface and method of making | |
| JP6809482B2 (en) | Glass manufacturing method | |
| JP2018020958A (en) | Molding tool, molding equipment, and production method of bent glass | |
| US10908321B2 (en) | Glass laminate, front plate for display, and display device | |
| WO2002036514A9 (en) | Method of ion beam milling a glass substrate prior to depositing a coating system thereon, and corresponding system for carrying out the same | |
| WO2011149694A1 (en) | Ion-exchanging an ar coated glass and process | |
| WO2019130285A1 (en) | Laminate with high resistance to abrasion and weathering | |
| EP2371778A1 (en) | Method for producing toughened flat glass with anti-reflective properties | |
| JPWO2015115492A1 (en) | Glass plate with anti-glare function for solar cells | |
| US20150219801A1 (en) | Manufacturing method for a glass that has an antireflection property and glass that has an antireflection property | |
| CN110588197B (en) | Glass with printed layer on curved surface and printing method thereof | |
| CN115784636A (en) | Bent glass plate and surface treatment method | |
| US20220402256A1 (en) | Automotive glazing with anti-fingerprint coating | |
| JP2018002585A (en) | Production method of molded glass and heating apparatus | |
| JP6583371B2 (en) | Method for manufacturing bent glass article | |
| WO2019225593A1 (en) | Glass laminate | |
| JP2023062743A (en) | Glass laminates and side glass for vehicles | |
| EP3521254A1 (en) | Method for manufacturing a coated chemically strengthened glass article |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |