CN110256897B - Inorganic ink, photovoltaic back plate glass and preparation method thereof - Google Patents
Inorganic ink, photovoltaic back plate glass and preparation method thereof Download PDFInfo
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- CN110256897B CN110256897B CN201910655645.1A CN201910655645A CN110256897B CN 110256897 B CN110256897 B CN 110256897B CN 201910655645 A CN201910655645 A CN 201910655645A CN 110256897 B CN110256897 B CN 110256897B
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- 239000005357 flat glass Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000011521 glass Substances 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 51
- 239000004925 Acrylic resin Substances 0.000 claims description 29
- 229920000178 Acrylic resin Polymers 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 24
- 239000004408 titanium dioxide Substances 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000012461 cellulose resin Substances 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 claims 1
- 238000002310 reflectometry Methods 0.000 abstract description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002313 adhesive film Substances 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 abstract description 5
- 239000000976 ink Substances 0.000 description 49
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 24
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 13
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 8
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 7
- 239000004576 sand Substances 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- 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
Abstract
The invention discloses inorganic ink, photovoltaic back plate glass and a preparation method thereof. The inorganic ink disclosed by the invention can effectively reduce the penetration of light to a coating and increase the reflection of light due to the matching and matching effect of all the components, so that the reflectivity of the photovoltaic backboard glass is effectively improved, the power generation efficiency is improved, and the power of a component is increased. Meanwhile, the film can replace the existing EVA adhesive film, and the EVA is prevented from decomposing to generate acetic acid to corrode the battery.
Description
Technical Field
The invention relates to the technical field of inorganic materials, in particular to inorganic ink, photovoltaic back plate glass and a preparation method thereof.
Background
The solar photovoltaic glass is a special glass which is laminated into a solar cell, can generate electricity by utilizing solar radiation and is provided with a relevant current leading-out device and a cable. The solar cell is sealed between a piece of low-iron glass and a piece of back glass through the film, and is the most novel high-tech glass product for buildings.
The existing photovoltaic back plate can be divided into a polymer back plate and a glass back plate. The back plate is used as an important component of the photovoltaic module, is a first barrier for protecting the photovoltaic module, can effectively prevent the oxidation of the cell piece in an outdoor application environment, and has the functions of reliable insulativity, water resistance, ageing resistance and the like.
The glass back plate belongs to inorganic materials, and the concept of the glass back plate is derived from a dual-glass assembly. The dual-glass assembly has the advantages of longer life cycle, low power attenuation rate, nearly zero water vapor transmission rate, super-good wear resistance, low PID attenuation possibility and the like.
The polymer back plate has the problems of insufficient aging resistance, yellowing, flammability, high water permeability, environmental pollution and the like.
The existing double-glass assembly has the problems of heaviness, light leakage, process defects caused by using a white EVA adhesive film for solving the problem of light leakage, battery corrosion caused by acetic acid generated by EVA decomposition, wind pressure resistance and the like.
The existing backplane glass ink also has the problems of poor weather resistance, poor corrosion resistance and low reflectivity, influences the power generation efficiency of the solar cell and shortens the service life of the cell.
Disclosure of Invention
The invention mainly solves the technical problem of providing the inorganic ink, the photovoltaic back plate glass and the preparation method thereof, wherein the ink has high reflectivity, and can solve the problems of light leakage and insufficient emissivity of the back plate glass.
In view of the above, embodiments of the present invention provide an inorganic ink, which includes the following components in parts by weight: 50-60 parts of low-temperature frit, 20-32 parts of titanium dioxide, 3-5 parts of high-temperature brightener, 5-10 parts of nano spherical powder and 20-30 parts of water-based high-viscosity resin, wherein the low-temperature frit is low-melting-point glass powder with Mohs hardness of more than 7, and the particle size range of the nano spherical powder is 800-1000 nm.
Wherein the low-temperature frit is electronic grade B2O3、SiO2、Al2O3The raw materials are evenly mixed and melted at high temperature to prepare the material; the titanium dioxide is rutile type titanium dioxide.
Wherein, the high-temperature brightener is ZnO or (Zn)3(PO4)2One or a combination of both.
Wherein the nano spherical powder is SiO2、ZrO2、Al2O3、CaCO3One or a combination of several of them.
Wherein the water-based high-viscosity resin is one or a combination of more of water-based acrylic resin, water-based polyester resin, modified cellulose resin and polyethylene oxide resin.
Wherein the fineness of the inorganic ink is less than 10 microns.
In order to solve the technical problem, the invention adopts another technical scheme that: the photovoltaic back plate glass comprises back plate glass and inorganic ink printed on the surface of the back plate glass, wherein the inorganic ink is the inorganic ink.
Wherein the coating thickness of the inorganic ink is 20-30 microns.
In order to solve the technical problems, the invention adopts the following technical scheme: the preparation method comprises the steps of screen printing the inorganic ink on the surface of the back plate glass by using a 120-filter 200-mesh screen, and sintering and tempering at 680-filter 720 ℃ to obtain the photovoltaic back plate glass.
Wherein the thickness of the coating of the inorganic ink is controlled to be 20-30 microns.
The invention has the beneficial effects that: different from the situation of the prior art, the inorganic ink is obtained by uniformly stirring and dispersing the low-temperature frit, the titanium dioxide, the high-temperature brightener, the nano spherical powder and the water-based high-viscosity resin, and is coated on the photovoltaic back plate glass, sintering is completed along with a furnace in the glass toughening process, so that subsequent coating of glass toughening is avoided, and the process steps and the labor equipment cost are reduced. The inorganic ink disclosed by the invention can effectively reduce the penetration of light to a coating and increase the reflection of light due to the matching and matching effect of all the components, so that the reflectivity of the photovoltaic backboard glass is effectively improved, the power generation efficiency is improved, and the power of a component is increased. Meanwhile, the film can replace the existing EVA adhesive film, and the EVA is prevented from decomposing to generate acetic acid to corrode the battery.
Drawings
FIG. 1 is a schematic diagram for light diffraction;
FIG. 2 is a schematic view of a portion of a light transmitting coating according to the present invention;
FIG. 3 is a schematic view of a nanospherical macroparticle that reduces light transmission.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to specific embodiments, but the following are only specific implementations of the present invention and are not intended to limit the scope of the present invention.
The inorganic ink provided by the embodiment of the invention comprises the following components in parts by weight: 50-60 parts of low-temperature frit, 20-32 parts of titanium dioxide, 3-5 parts of high-temperature brightener, 5-10 parts of nano spherical powder and 20-30 parts of water-based high-viscosity resin, wherein the low-temperature frit is low-melting-point glass powder with the Mohs hardness of more than 7, and the particle size range of the nano spherical powder is 800-1000 nm.
Wherein the components are mixed together and then ground by a three-roll machine or a sand mill until the fineness is less than 10 microns.
The low-temperature frit is an inorganic non-metallic material, is softened and melted at high temperature to form a glass-state inorganic coating, has a Mohs hardness of more than 7, can resist erosion of wind and sand, and has the characteristics of firmness, corrosion resistance, good weather resistance, no combustion, environmental protection and the like, so that the glass backboard can replace a high-molecular backboard, and the problems of insufficient aging resistance, yellowing, flammability, high water permeability, environmental protection and the like of the high-molecular backboard are solved. In particular by using electronic grade B2O3、SiO2、Al2O3The raw materials are evenly mixed and melted at high temperature.
The titanium dioxide in the invention is rutile titanium dioxide, and can provide good covering power and high reflectivity.
Wherein the spherical nanopowder is mainly spherical or spherical-like granular powder, specifically SiO2、ZrO2、Al2O3、CaCO3One or more of the components are combined to form the nano spherical powder. The reflectivity of the printing ink can be effectively improved through the matching effect of the nano spherical powder and the titanium dioxide. The specific principle is that the particle size of commercially available titanium dioxide is 300-500nm, the wavelength of visible light is 380-1100 nm, and due to the diffraction effect of light, part of light can penetrate through the coating (see schematic diagrams of fig. 1 and 2), wherein fig. 1 shows that the light can penetrate through the titanium dioxide through the diffraction effect, and fig. 2 shows that part of light can penetrate through the coating, so that the reflected light is reduced, and the reflectivity is lower. The particle size of the nano spherical particles is 800-1000nm, which is larger than that of titanium dioxide, when the nano spherical particles are filled in the titanium dioxide gaps, more light can be reflected back through refraction, the penetration of the light is reduced, and the reflection of the light is increased (see the schematic diagram of fig. 3). FIG. 3 illustrates that the nano-spherical large particles can reduce the penetration of light and improve the reflectivity of the coating.
Wherein, as a specific implementation,the high-temperature brightener is ZnO or (Zn)3(PO4)2One or a combination of both. By adding the high-temperature brightener, the melting temperature of the low-temperature frit can be reduced at high temperature, the whiteness and the opacity of the coating are improved, and the gloss of the coating is improved, so that the improvement of the reflectivity is facilitated.
As a specific implementation, the waterborne high-viscosity resin in the invention is one or a combination of more of waterborne acrylic resin, waterborne polyester resin, modified cellulose resin and polyethylene oxide resin. It features low solid content, high viscosity, good flowability and levelling performance.
On the basis of the inorganic ink provided by the above embodiment of the invention, the invention further provides a photovoltaic back plate glass, which comprises a back plate glass and the inorganic ink printed on the surface of the back plate glass, wherein the inorganic ink is the inorganic ink provided by the above invention.
In a preferred embodiment, the thickness of the inorganic ink coating on the back glass is controlled to be 20-30 μm.
After the inorganic ink is coated on the surface of the back plate glass, the reflectivity of the coating can reach 81% -84%, the problems of light leakage and insufficient reflectivity of the back plate glass can be effectively solved, the power generation efficiency can be improved, and the power of the assembly is increased. Meanwhile, the printing ink coating can also replace an EVA adhesive film, so that the EVA is prevented from decomposing to generate acetic acid to corrode the battery.
Furthermore, an embodiment of the present invention further provides a preparation method of the photovoltaic back plate glass, the preparation method includes that the inorganic ink of the present invention is screen-printed on the surface of the back plate glass by using 120-mesh and 200-mesh screens, the thickness of the coating of the inorganic ink is controlled to be 20-30 micrometers, and the photovoltaic back plate glass of the present invention is obtained through sintering and tempering at 680-mesh and 720 ℃, wherein the specific sintering time is determined by the glass tempering time.
According to the inorganic ink, the photovoltaic back plate glass and the preparation method thereof, the inorganic ink is obtained by uniformly stirring and dispersing the low-temperature frit, the titanium dioxide, the high-temperature brightener, the nano spherical powder and the water-based high-viscosity resin, and the inorganic ink is coated on the photovoltaic back plate glass and sintered along with a furnace in the glass toughening process, so that the subsequent coating of glass toughening is avoided, and the process steps and the cost of manual equipment are reduced. The inorganic ink disclosed by the invention can effectively reduce the penetration of light to a coating and increase the reflection of light due to the matching and matching effect of all the components, so that the reflectivity of the photovoltaic backboard glass is effectively improved, the power generation efficiency is improved, and the power of a component is increased. Meanwhile, the film can replace the existing EVA adhesive film, and the EVA is prevented from decomposing to generate acetic acid to corrode the battery.
Several specific examples are provided below to illustrate the inorganic ink formulation and its specific preparation process of the present invention:
example 1
The inorganic ink is composed of the following raw materials in parts by weight:
62 parts of low-temperature frit, 30 parts of titanium dioxide, 3 parts of ZnO, 5 parts of spherical alumina and 30 parts of aqueous acrylic resin solution, wherein the aqueous acrylic resin solution comprises the following raw materials in parts by weight of 15 parts of aqueous acrylic resin, 20 parts of butyl cellosolve, 10 parts of propylene glycol monomethyl ether, 50 parts of deionized water and 5 parts of propylene glycol
The preparation process comprises the following steps:
(1) preparation of aqueous acrylic resin solution
Weighing the following raw materials in parts by weight: 15 parts of water-based acrylic resin, 20 parts of ethylene glycol butyl ether, 10 parts of propylene glycol methyl ether, 50 parts of deionized water and 5 parts of propylene glycol
After the above raw materials were mixed, the mixture was stirred slowly by a dispersion machine to obtain a transparent resin solution.
(2) Preparation of inorganic inks
Weighing the following raw materials in parts by weight: 62 parts of low-temperature frit, 30 parts of titanium dioxide, 3 parts of ZnO, 5 parts of spherical alumina and 30 parts of aqueous acrylic resin solution
The raw materials are stirred uniformly by a high-speed dispersion machine, then ground by a three-roll machine or a sand mill until the fineness is less than 10 mu m, and added with aqueous acrylic resin solution to adjust the viscosity, thus obtaining the high-reflectivity inorganic ink.
Example 2
The inorganic ink is composed of the following raw materials in parts by weight:
60 parts of low-temperature frit, 32 parts of titanium dioxide, 2.5 parts of ZnO, 5.5 parts of spherical alumina and 25 parts of aqueous acrylic resin solution, wherein the aqueous acrylic resin solution comprises the following raw materials in parts by weight, 12 parts of aqueous acrylic resin, 3 parts of carboxymethyl cellulose, 20 parts of butyl cellosolve, 10 parts of propylene glycol monomethyl ether, 50 parts of deionized water and 5 parts of propylene glycol
The preparation process comprises the following steps:
(1) preparation of aqueous acrylic resin solution
Weighing the following raw materials in parts by weight: 12 parts of water-based acrylic resin, 3 parts of carboxymethyl cellulose, 20 parts of ethylene glycol butyl ether, 10 parts of propylene glycol methyl ether, 50 parts of deionized water and 5 parts of propylene glycol.
After the above raw materials were mixed, the mixture was stirred slowly by a dispersion machine to obtain a transparent resin solution.
(2) Preparation of inorganic inks
60 parts of low-temperature frit, 32 parts of titanium dioxide, 2.5 parts of ZnO, 5.5 parts of spherical alumina and 25 parts of aqueous acrylic resin solution
The raw materials are stirred uniformly by a high-speed dispersion machine, then ground by a three-roll machine or a sand mill until the fineness is less than 10 mu m, and added with aqueous acrylic resin solution to adjust the viscosity, thus obtaining the high-reflectivity inorganic ink.
Example 3
The inorganic ink is composed of the following raw materials in parts by weight:
65 parts of low-temperature frit, 28 parts of titanium dioxide, 2 parts of ZnO, 5 parts of spherical alumina and 29 parts of aqueous acrylic resin solution, wherein the aqueous acrylic resin solution is prepared from the following raw materials in parts by weight of 12 parts of aqueous acrylic resin, 3 parts of carboxymethyl cellulose, 20 parts of butyl cellosolve, 10 parts of propylene glycol monomethyl ether, 50 parts of deionized water and 5 parts of propylene glycol
The preparation process comprises the following steps
(1) Preparation of aqueous resin solution
Weighing the following raw materials in parts by weight: 12 parts of polyoxyethylene ether, 3 parts of carboxymethyl cellulose, 20 parts of ethylene glycol butyl ether, 10 parts of propylene glycol methyl ether, 50 parts of deionized water and 5 parts of propylene glycol.
After the above raw materials were mixed, the mixture was stirred slowly by a dispersion machine to obtain a transparent resin solution.
(2) Preparation of inorganic inks
65 parts of low-temperature frit, 28 parts of titanium dioxide, 2 parts of ZnO, 5 parts of spherical alumina and 29 parts of aqueous acrylic resin solution.
The raw materials are stirred uniformly by a high-speed dispersion machine, then ground by a three-roll machine or a sand mill until the fineness is less than 10 mu m, and added with aqueous acrylic resin solution to adjust the viscosity, thus obtaining the high-reflectivity inorganic ink.
Example 4
The inorganic ink is composed of the following raw materials in parts by weight:
60 parts of low-temperature frit, 30 parts of titanium dioxide, 2.5 parts of ZnO, 7.5 parts of spherical alumina and 25 parts of aqueous acrylic resin solution, wherein the aqueous acrylic resin solution comprises the following raw materials in parts by weight of 15 parts of aqueous acrylic resin, 20 parts of propylene carbonate, 10 parts of propylene glycol methyl ether, 50 parts of deionized water and 5 parts of propylene glycol
The preparation process comprises the following steps
(1) Preparation of aqueous acrylic resin solution
Weighing the following raw materials in parts by weight: 12 parts of water-based acrylic resin, 3 parts of carboxymethyl cellulose, 20 parts of ethylene glycol butyl ether, 10 parts of propylene glycol methyl ether, 50 parts of deionized water and 5 parts of propylene glycol.
After the above raw materials were mixed, the mixture was stirred slowly by a dispersion machine to obtain a transparent resin solution.
(2) Preparation of inorganic inks
60 parts of low-temperature frit, 30 parts of titanium dioxide, 2.5 parts of ZnO, 7.5 parts of spherical alumina and 25 parts of aqueous acrylic resin solution.
The raw materials are stirred uniformly by a high-speed dispersion machine, then ground by a three-roll machine or a sand mill until the fineness is less than 10 mu m, and added with aqueous acrylic resin solution to adjust the viscosity, thus obtaining the high-reflectivity inorganic ink.
By comparing the performance of the high-reflectivity inorganic ink prepared by the embodiment of the invention with that of the existing ink product, the performance of each aspect is far superior to that of the existing product, especially, the reflectivity of the inorganic ink of the invention is far higher than that of the existing product, and the inorganic ink has market advantages and prospects when being applied to backboard glass, and the specific effect comparison is shown in the following table:
therefore, the inorganic ink disclosed by the invention can effectively solve the problems of poor weather resistance, poor corrosion resistance and low emissivity of the back plate glass ink in the prior art, is simple in preparation process and suitable for batch production, is applied to back plate glass, is sintered along with a furnace in the glass toughening process, avoids subsequent coating of glass toughening, and reduces the process steps and the labor equipment cost.
The above are only specific and preferred embodiments provided by the embodiments of the present invention, but the scope of the present invention is not limited thereto.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The inorganic ink is characterized by comprising the following components in parts by weight: 50-60 parts of low-temperature frit, 20-32 parts of titanium dioxide, 3-5 parts of high-temperature brightener, 5-10 parts of nano spherical powder and 20-30 parts of water-based high-viscosity resin, wherein the low-temperature frit is low-melting-point glass powder with Mohs hardness of more than 7, the particle size range of the nano spherical powder is 800-1000nm, and the particle size of the titanium dioxide is 300-500 nm;
the low-temperature frit is electronic grade B2O3、SiO2、Al2O3The raw materials are evenly mixed and melted at high temperature to prepare the material; the titanium dioxide is rutile type titanium dioxide;
the high-temperature brightenerIs ZnO or Zn3(PO4)2One or a combination of two thereof;
the water-based high-viscosity resin is one or a combination of more of water-based acrylic resin, water-based polyester resin, modified cellulose resin and polyethylene oxide resin.
2. The inorganic ink according to claim 1, wherein the nano spherical powder is SiO2、ZrO2、Al2O3、CaCO3One or a combination of several of them.
3. The inorganic ink of any one of claims 1-2, wherein the inorganic ink has a fineness of less than 10 microns.
4. A photovoltaic back sheet glass, comprising a back sheet glass and an inorganic ink printed on the surface of the back sheet glass, wherein the inorganic ink is the inorganic ink according to any one of claims 1 to 3.
5. The photovoltaic backsheet glass of claim 4, wherein the inorganic ink has a coating thickness of 20 to 30 microns.
6. The preparation method of the photovoltaic back plate glass is characterized in that the inorganic ink of any one of claims 1 to 3 is screen-printed on the surface of the back plate glass by a 120-ion 200-mesh screen, and is sintered and tempered at 680-ion 720 ℃ to obtain the photovoltaic back plate glass.
7. The method according to claim 6, wherein the coating thickness of the inorganic ink is controlled to be 20 to 30 μm.
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| CN201910655645.1A CN110256897B (en) | 2019-07-19 | 2019-07-19 | Inorganic ink, photovoltaic back plate glass and preparation method thereof |
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| CN201910655645.1A CN110256897B (en) | 2019-07-19 | 2019-07-19 | Inorganic ink, photovoltaic back plate glass and preparation method thereof |
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| CN110256897A CN110256897A (en) | 2019-09-20 |
| CN110256897B true CN110256897B (en) | 2021-12-07 |
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| CN110819185A (en) * | 2019-10-24 | 2020-02-21 | 常州市武进新邦涂料有限公司 | XB-S-water-soluble high-reflection photovoltaic backboard glass paint and application scheme thereof |
| CN110845885A (en) * | 2019-10-24 | 2020-02-28 | 常州市武进新邦涂料有限公司 | XB-oily high-reflection photovoltaic backboard glass paint and application scheme thereof |
| CN111944357A (en) * | 2020-07-21 | 2020-11-17 | 信义光伏产业(安徽)控股有限公司 | Glass ink and high-reflection back plate glass |
| CN112299729B (en) * | 2020-11-11 | 2021-06-22 | 黄山市晶特美新材料有限公司 | High-diffuse-reflection glass slurry for crystalline silicon photovoltaic module and preparation method thereof |
| CN112646431A (en) * | 2021-01-08 | 2021-04-13 | 常州回天新材料有限公司 | Printing coating for photovoltaic module and preparation method thereof |
| CN114891372B (en) * | 2021-06-04 | 2023-09-08 | 焕澄(上海)新材料科技发展有限公司 | Ion-blocking reflection-increasing glaze layer and preparation method thereof |
| CN113772959B (en) * | 2021-09-14 | 2023-05-02 | 黄山市晶特美新材料有限公司 | High-reflection low-temperature crystallized glass slurry for double-glass solar cell module and preparation method thereof |
| CN114249538A (en) * | 2021-12-06 | 2022-03-29 | 华东理工大学 | Glass powder for photovoltaic ink and preparation method thereof |
| CN114958075B (en) * | 2022-06-06 | 2023-05-12 | 东莞南玻太阳能玻璃有限公司 | Water-based reflective ink, preparation method thereof and application thereof in photovoltaic glass |
| CN114989660A (en) * | 2022-06-20 | 2022-09-02 | 湖北格纳斯新材料有限公司 | High-efficiency glass printing ink for photovoltaic back plate |
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