CN116023040A - Ultraviolet protective coating and ultrathin glass coated with same - Google Patents
Ultraviolet protective coating and ultrathin glass coated with same Download PDFInfo
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- CN116023040A CN116023040A CN202211613084.7A CN202211613084A CN116023040A CN 116023040 A CN116023040 A CN 116023040A CN 202211613084 A CN202211613084 A CN 202211613084A CN 116023040 A CN116023040 A CN 116023040A
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- 239000011521 glass Substances 0.000 title claims abstract description 130
- 239000011253 protective coating Substances 0.000 title claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 72
- 239000011248 coating agent Substances 0.000 claims abstract description 67
- 229910000174 eucryptite Inorganic materials 0.000 claims abstract description 18
- 239000004088 foaming agent Substances 0.000 claims abstract description 16
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000007639 printing Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 11
- 239000000194 fatty acid Substances 0.000 claims description 11
- 229930195729 fatty acid Natural products 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- -1 fatty acid ester Chemical group 0.000 claims description 4
- 239000002480 mineral oil Substances 0.000 claims description 4
- 235000010446 mineral oil Nutrition 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000006255 coating slurry Substances 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims 3
- 239000002245 particle Substances 0.000 claims 1
- 238000002834 transmittance Methods 0.000 abstract description 7
- 238000002310 reflectometry Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 13
- 238000004049 embossing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 238000001878 scanning electron micrograph Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 230000004224 protection Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000000985 reflectance spectrum Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000000411 transmission spectrum Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
The invention provides an ultraviolet protective coating, which is prepared from the following raw materials by mass percent of 60-70% of glass base glaze and 30-40% of TiO 2 With glass base glaze and TiO 2 Based on the total mass of the glass base glaze and TiO, wherein the addition amount of the eucryptite is 0-1.5wt% 2 And the addition amount of the printing ink is 22-25wt% and the addition amount of the foaming agent is 0-1wt% based on the total mass of the mixture composed of eucryptite. The invention also provides an ultrathin glass coated with the coating and a method for coating the coating on the ultrathin glass. The coating provided by the invention has low transmittance and high reflectivity, and the ultraviolet-visible-infrared ray blocking performance of the coating is improved. And the coating warpage is significantly reduced.
Description
Technical Field
The invention belongs to the field of high-reflection ultraviolet protective coatings, and also relates to packaging glass for satellite electronic devices.
Background
Currently, the application field of electronic devices is very wide. The ultraviolet irradiation intensity in the space environment is high, and the electronic devices of the satellite can be subjected to strong ultraviolet radiation to generate various adverse effects. Therefore, there is a need to develop an ultraviolet protective coating material to protect the electronics of satellites. Ultraviolet protective coatings are classified into organic materials and inorganic materials. In general, organic materials have far less radiation resistance than inorganic materials. The ultraviolet irradiation intensity in the space environment is higher than that of the earth, and the inorganic ultraviolet protective coating has more advantages.
At present, a literature report on an inorganic ultraviolet protective coating is reported, for example, a document with the application publication number of CN115231830A discloses a silicon dioxide/rare earth pyrosilicate composite material and application thereof in ultraviolet resistant glass, and the ultraviolet resistant coating is obtained by uniformly mixing the silicon dioxide/rare earth pyrosilicate composite material and organic slurry and printing on the surface of a glass substrate by a screen printing method. However, there are some drawbacks to using organic materials as a bonding substrate: firstly, the anti-aging and ultraviolet effects are affected, and secondly, the coating strength is not high and the coating is not resistant to high temperature.
Further, as disclosed in the document with application publication number CN111393882a, an ultraviolet radiation resistant low-absorptivity inorganic white thermal control coating and a preparation method thereof are disclosed, wherein the composition of the thermal control coating is as follows: water glass, white pigment, dispersing agent, substrate wetting agent, defoamer, thickener and the balance of deionized water. However, the curing time of the coating is long (7-10 days at room temperature). While the chemical stability of the coating (containing the polymer) is to be further improved.
The ultra-thin glass can be used for a glass cover plate of a solar cell of an artificial satellite to prevent cosmic rays and ultraviolet rays, thereby protecting a solar cell or an electronic device. For example, the blades of the BS-2 communication satellite are provided with about 2 ten thousand square ultrathin glass cover plates (the thickness is 50-100 um), so that more than 2 ten thousand solar cells or devices on the artificial satellite reduce the radiation of cosmic rays and ultraviolet rays. The ultra-thin glass cover plate is coated with a coating for preventing ultraviolet or cosmic ray radiation, so that the ultra-thin glass cover plate coated with the coating is developed, and cosmic rays and strong ultraviolet radiation can be further obviously blocked.
The packaging glass of satellite electronics is very thin (30-150 microns), the strength of ultra-thin glass is limited, and there is a challenge in how to apply an inorganic coating to ultra-thin glass, so that the coating and ultra-thin glass have good adhesion. Improving the ultraviolet resistance, heat protection performance and chemical stability of the coating and reducing the warpage of the coating are the problems to be solved urgently at present.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention aims to solve the problems and provides an ultraviolet protective coating.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the ultraviolet protective coating is prepared from 60-70wt% of glass base glaze and 30-40wt% of TiO 2 With glass base glaze and TiO 2 Based on the total mass of the glass base glaze and TiO, wherein the addition amount of the eucryptite is 0-1.5wt% 2 And the addition amount of the printing ink is 22-25wt% and the addition amount of the foaming agent is 0-1wt% based on the total mass of the mixture composed of eucryptite.
The glass base glaze comprises the following components: bi (Bi) 2 O 3 82.0-83.5wt％，B 2 O 3 5 to 6 weight percent, 7.5 to 8.0 weight percent of ZnO, 2.4 to 2.5 weight percent of BaO, 1.5 to 1.6 weight percent of CuO, and the grain diameter of the glass base glaze D80 is less than or equal to 5um.
The TiO 2 TiO of rutile crystal form 2 。
The foaming agent is an organic foaming agent containing mineral oil and fatty acid, and the fatty acid can be replaced by fatty acid ester.
Li in eucryptite 2 The mass fraction of O is more than or equal to 6wt percent, and the grain diameter of eucryptite D80 is less than or equal to 4um.
In addition, the invention also provides the ultrathin glass, and the surface of the ultrathin glass is coated with the ultraviolet protective coating.
In addition, the invention also provides a method for coating the surface of the ultrathin glass, which comprises the following steps: spraying water on the embossed glass plate, spreading the ultra-thin glass on the embossed glass plate, enabling the ultra-thin glass to move on the embossed glass plate, continuously wiping off discharged water until stable negative pressure is formed between the ultra-thin glass and the embossed glass plate, and uniformly coating the ultra-thin glass with coating slurry.
The embossing glass plate has regular hexagon embossing pattern with depth of 0.2mm, embossing pattern width greater than 0.2mm and embossing pattern length less than 10mm.
In addition, the invention also provides a glass cover plate of the artificial satellite solar cell, which is made of the ultrathin glass.
By adopting the technical scheme, the invention has the following advantages:
1. the coating has better ultraviolet-visible-infrared light blocking effect and adopts Bi 2 O 3 -B 2 O 3 The ZnO-BaO-CuO glass base glaze is taken as a substrate, so that the reflection performance of the coating is improved, and the thermal protection effect is better. By Bi-containing 2 O 3 -B 2 O 3 The ZnO-BaO-CuO glass base glaze is used for preparing the coating, the amount of the used ink is obviously reduced, and the cost is saved.
2. In the preparation process of the slurry, a proper amount of organic foaming agent containing mineral oil, fatty acid or fatty acid ester is added, so that the surface roughness of the coating is obviously reduced, and the reflectivity of the coating is increased. Meanwhile, under the condition of ensuring certain adhesive force of the coating, the porosity (void ratio) of the coating is increased by foaming, and the ultraviolet-visible-infrared light blocking performance of the coating is improved.
3. The invention adopts the embossed glass plate as a substrate, and uses the surface tension of water and an air evacuation method to form negative pressure, so that the ultra-thin glass and the embossed glass plate are firmly fixed together, and the adhesion between the ultra-thin glass and the silk screen plate (if the ultra-thin glass and the silk screen plate are adhered together during coating, the coating fails) is avoided. Meanwhile, the embossed glass plate is adopted, and the ultrathin glass coated with the slurry is easy to separate from the embossed glass plate (if common flat glass is adopted, the ultrathin glass is difficult to separate from the embossed glass plate).
4. The invention adds a certain amount of eucryptite, and the warpage of the prepared coating is obviously reduced (the definition of the warpage will be described below).
Drawings
FIG. 1 is a graph showing the degree of warping of a coating.
FIG. 2 is a graph of the transmittance spectra of ultra-thin flexible glass coated with group 1 and group 2 coatings, respectively.
FIG. 3 is a graph of reflectance spectra of ultra-thin flexible glass coated with group 1 and group 2 coatings, respectively.
FIG. 4 is a scanning electron micrograph (500X) of an ultrathin flexible glass surface coated with a group 1 coating.
FIG. 5 is a scanning electron micrograph (150X) of an ultrathin flexible glass surface coated with a group 1 coating.
FIG. 6 is a scanning electron micrograph (500X) of a cross section of an ultra-thin flexible glass coated with a group 1 coating.
FIG. 7 is a scanning electron micrograph (500X) of an ultrathin flexible glass surface coated with a group 2 coating.
FIG. 8 is a scanning electron micrograph (150X) of an ultrathin flexible glass surface coated with a group 2 coating.
FIG. 9 is a scanning electron micrograph (500X) of a cross section of an ultra-thin flexible glass coated with a group 2 coating.
FIG. 10 is a scanning electron micrograph (200X) of an ultrathin flexible glass surface coated with a group 5 coating.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1: an ultraviolet protective coating, the preparation raw materials include: glass base glaze and rutile crystal form TiO 2 Foaming agent, ink, eucryptite.
60-70wt% of glass base glaze, and the rutile crystal form TiO 2 The mass fraction of (C) is 30-40wt%. With glass base glaze and rutile crystal form TiO 2 Based on the total mass of (2), the addition amount of eucryptite is as follows0-1.5wt%. With glass base glaze and rutile crystal form TiO 2 And the addition amount of the printing ink is 22-25wt% and the addition amount of the foaming agent is 0-1wt% based on the total mass of the mixture composed of eucryptite.
Wherein the composition of the glass base glaze is as follows: bi (Bi) 2 O 3 82.0-83.5wt％，B 2 O 3 5 to 6 weight percent, 7.5 to 8.0 weight percent of ZnO, 2.4 to 2.5 weight percent of BaO and 1.5 to 1.6 weight percent of CuO, and the grain size (the grain size is 80 percent, the same applies hereinafter) of the glass base glaze D80 is less than or equal to 5um.
The foaming agent is an organic foaming agent containing mineral oil and fatty acid, and the fatty acid can be replaced by fatty acid ester.
Li in eucryptite 2 The mass fraction of O is more than or equal to 6wt percent, and the grain diameter of eucryptite D80 is less than or equal to 4um.
The ink is water-based ink, and oil-based ink can be used according to actual needs.
The invention provides 5 components as shown in table 1.
TABLE 1
Those skilled in the art can, as desired, convert rutile crystalline TiO 2 Replaced by CaCO 3 、BaSO 4 、MgO、CaSO 4 Anatase crystalline TiO 2 And the like. TiO can be added appropriately according to the ultraviolet absorption effect and the heat protection (reflection) effect 2 Mass fraction of (c) is determined. The glass base glaze can also be replaced by other Bi-containing glaze according to the need 2 O 3 -B 2 O 3 Glass-based glazing of ZnO-CuO. In addition, more eucryptite may be added according to actual needs, but the production cost becomes high.
Example 2: the preparation method of the ultra-thin glass coated with the protective coating comprises the following preparation steps:
s1. The glass base glaze, eucryptite and rutile TiO according to example 1 2 Grinding to obtain mixture, adding ink and foaming agent, stirring to form slurry, and standing for a period of time until there is no surface of the slurryAnd (5) air bubbles.
S2, spraying deionized water on the embossed glass plate, flatly paving the ultrathin glass on the embossed glass plate, slowly moving the ultrathin glass and the embossed glass plate, and continuously wiping off the discharged deionized water until stable negative pressure is formed between the ultrathin glass and the embossed glass plate (the negative pressure value is not changed). The paste was uniformly coated on the ultra-thin glass by a screen printing process.
S3, placing the ultrathin glass and the embossed glass plate into a drying box at 80-300 ℃ together, and drying for 2-24 hours. The silica gel material is used to contact with the surface of the ultrathin glass, and the ultrathin glass is separated from the embossed glass plate due to the adsorption force of the silica gel material.
S4, placing the ultrathin glass separated in the step S3 into a resistance furnace for sintering, taking out and cooling after sintering for a period of time, and obtaining the ultrathin glass coated with the protective coating.
The sintering temperature and the sintering time can be determined according to actual needs, and the high-temperature sintering temperature in the embodiment of the invention is 610 ℃ and the sintering time is 10min.
The embossing glass plate has the embossing pattern of regular hexagon (other shapes can be set according to the requirement), the depth of the embossing pattern is 0.2mm, the width of the embossing pattern is more than 0.2mm, and the length of the embossing pattern is less than 10mm.
The ultra-thin glass may be tempered (including chemically or physically). The thickness of the ultrathin glass in the embodiment of the invention is 70um. The thickness can be smaller in practical production.
It should be noted that this preparation method is not only applicable to the coating of example 1 of the present invention applied to glass products, but is applicable to virtually all product preparation processes requiring the coating to be applied to ultra-thin glass.
The prepared ultra-thin glass coated with the ultraviolet protective coating is subjected to transmittance test, air is taken as a standard sample (the transmittance is 100%), and an ultraviolet-visible-near infrared spectrometer (instrument model UV3600, japan) is used for testing the transmittance of a coating sample at the wavelength of 200-2450nm at room temperature. The prepared coating was subjected to reflectance test to analyze pure BaSO 4 For standard (reflection)The reflectance of the coating samples was measured at 250-2000nm using an integrating sphere method at room temperature using an ultraviolet-visible-near infrared spectrometer (instrument model UV3600, japan).
Fig. 2 is a transmittance spectrum of ultra-thin glass coated with the group 1 and group 2 coatings, respectively, and fig. 3 is a reflectance spectrum of ultra-thin glass coated with the group 1 and group 2 coatings, respectively. As can be seen from fig. 2 and 3, both groups 1 and 2 have low transmittance of uv-vis-ir light, and both groups 1 and 2 have high reflectance. Group 2 components have lower ultraviolet-visible-infrared light transmittance and higher reflectivity than group 1 components.
And observing microscopic morphology of the surface and the section of the coating by using a field emission scanning electron microscope (instrument model: JSM-7500F).
Fig. 4 is a scanning electron microscope (500 times) of an ultrathin glass surface coated with the 1 st group coating, fig. 5 is a scanning electron microscope (150 times) of an ultrathin glass surface coated with the 1 st group coating, fig. 6 is a scanning electron microscope (500 times) of an ultrathin glass surface coated with the 1 st group coating, fig. 7 is a scanning electron microscope (500 times) of an ultrathin glass surface coated with the 2 nd group coating, fig. 8 is a scanning electron microscope (150 times) of an ultrathin glass surface coated with the 2 nd group coating, fig. 9 is a scanning electron microscope (500 times) of an ultrathin glass surface coated with the 2 nd group coating, and fig. 10 is a scanning electron microscope (200 times) of an ultrathin glass surface coated with the 5 th group coating. As can be seen from fig. 4, 6, 7, 9 and 10, the surface roughness of group 5, which does not contain a foaming agent, is greater than that of group 2, and the roughness of the coating can be significantly reduced by adding a certain amount of foaming agent. However, the roughness significantly affects the reflectivity of the coating, i.e. the higher the roughness of the interface, the lower the reflectivity of the interface. If too much blowing agent is added, pores become more, which is unfavorable for the flatness of the coating. As can be seen from fig. 4, 5, 7 and 8, adding more foaming agent increases the porosity, and high porosity is detrimental to the reflection effect, but increasing the porosity to a certain extent can absorb more light to achieve the effect of blocking ultraviolet rays.
After the ultra-thin glass coated with the coating is sintered at a high temperature, the phenomenon that the ultra-thin glass is bent due to large temperature difference change is called warping, and the degree of bending is expressed by the warping degree. Fig. 1 is a schematic view of the warping degree of the coating, and the warping degree is described below with reference to fig. 1. Let L be the horizontal side length of the ultra-thin glass, h be the maximum vertical height of the ultra-thin glass bending, and the warpage is expressed by arctan (2 h/L).
The ultra-thin glass warpage of the inventive coated coatings of each set and as shown in table 2 (only data for sets 2, 3, 4 are provided).
TABLE 2
| Sample of | Group 2 | Group 3 | Group 4 |
| Warp degree (°) | 6.8 | 3.4 | 2.6 |
Coating adhesion test. To test the adhesion between the coating and the ultra-thin glass, a sample hundred test was carried out according to GB/T9286-1998 scratch test for color paint and varnish-paint film. The ultra-thin glass coated with the coating is placed on a flat plate with enough hardness, and the handle of the cross-cut device is held by hand, so that the multi-blade cutting knife is perpendicular to the plane of the ultra-thin glass, and the ultra-thin glass is cut with uniform pressure, smooth and non-vibration method and cutting speed of 20-50 mm/s. And (5) making the same number of parallel cutting lines and the original cutting lines to form a grid pattern. The reflective coating was gently brushed 5 times back and 5 times forward along the two diagonal lines of the grid pattern with a soft brush. Then sticking the adhesive tape with the length at least exceeding 20mm of the grid, flattening the adhesive tape above the grid area by fingers, pinching the suspended end of the adhesive tape in the adhesive tape sticking 5mi n, and tearing off the adhesive tape within 0.5-1.0 s smoothly. The test is performed at least at 3 different positions of the coating, and if the test results at 3 positions are different, the test should be repeated at other positions. The adhesion test results are classified into 0 to 5 grades according to the falling degree of the coating at the intersections of the grid cuts, and the smaller the grade number is, the better the adhesion is. The protective coating of the invention is subjected to the adhesion test (hundred-cell test), and the adhesion grades are all 0 grade.
Example 3: the ultra-thin glass of the invention can also be used for artificial satellite solar cell glass cover plates. The invention therefore also provides a satellite solar cell glazing panel made of ultra-thin glass coated with a protective coating as described in example 2.
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings.
Claims (10)
1. The ultraviolet protective coating is characterized by comprising the following raw materials: 60-70wt% of glass base glaze and 30-40wt% of TiO 2 With glass base glaze and TiO 2 Based on the total mass of the glass base glaze and TiO, wherein the addition amount of the eucryptite is 0-1.5wt% 2 And the addition amount of the printing ink is 22-25wt% and the addition amount of the foaming agent is 0-1wt% based on the total mass of the mixture composed of eucryptite.
2. The uv protective coating according to claim 1, wherein the composition of the glass base glaze is: bi (Bi) 2 O 3 82.0-83.5wt％，B 2 O 3 5-6wt％，ZnO 7.5-8.0wt％，BaO 2.4-2.5wt％，CuO 1.5-1.6wt％。
3. The ultraviolet protective coating of claim 2, wherein the glass base glaze D80 has a particle size of 5um or less.
4. The uv protective coating according to claim 1, wherein the TiO 2 TiO of rutile crystal form 2 。
5. The uv protective coating according to claim 1, wherein the foaming agent is an organic foaming agent comprising mineral oil and fatty acid, which fatty acid may be replaced with a fatty acid ester.
6. The ultraviolet protective coating of claim 1, wherein Li in eucryptite 2 The mass fraction of O is more than or equal to 6wt percent, and the grain diameter of eucryptite D80 is less than or equal to 4um.
7. Ultra-thin glass, characterized in that the ultra-thin glass surface is coated with an ultraviolet protective coating according to any one of claims 1 to 6.
8. A method of applying a coating to an ultra-thin glass surface, the method comprising: spraying water on the embossed glass plate, spreading the ultra-thin glass on the embossed glass plate, enabling the ultra-thin glass to move on the embossed glass plate, continuously wiping off discharged water until stable negative pressure is formed between the ultra-thin glass and the embossed glass plate, and uniformly coating the ultra-thin glass with coating slurry.
9. The method of coating a surface of ultra-thin glass according to claim 8, wherein the embossed glass plate has a regular hexagon of indentation pattern with a depth of 0.2mm, an indentation pattern width of greater than 0.2mm, and an indentation pattern length of less than 10mm.
10. A satellite solar cell glazing panel, wherein the glazing panel is made using the ultra-thin glass of claim 7.
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| CN202211613084.7A CN116023040B (en) | 2022-12-15 | 2022-12-15 | Ultraviolet protective coating and ultrathin glass coated with same |
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| CN202211613084.7A CN116023040B (en) | 2022-12-15 | 2022-12-15 | Ultraviolet protective coating and ultrathin glass coated with same |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040029703A1 (en) * | 2002-05-15 | 2004-02-12 | Srinivasan Sridharan | Durable glass enamel composition |
| TW200414949A (en) * | 2002-10-07 | 2004-08-16 | Schott Glas | Detachably connected compound comprising an extremely thin substrate and a support substrate |
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| CN116023040B (en) | 2024-06-28 |
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