CN114656141A - Fluorine-free reflecting material for solar photovoltaic glass and preparation process thereof - Google Patents
Fluorine-free reflecting material for solar photovoltaic glass and preparation process thereof Download PDFInfo
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- CN114656141A CN114656141A CN202210311029.6A CN202210311029A CN114656141A CN 114656141 A CN114656141 A CN 114656141A CN 202210311029 A CN202210311029 A CN 202210311029A CN 114656141 A CN114656141 A CN 114656141A
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- 239000011521 glass Substances 0.000 title claims abstract description 119
- 239000000463 material Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 44
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 31
- 229920002635 polyurethane Polymers 0.000 claims abstract description 20
- 239000004814 polyurethane Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000292 calcium oxide Substances 0.000 claims abstract description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims abstract description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims description 27
- 230000008018 melting Effects 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 21
- 230000004907 flux Effects 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 238000003490 calendering Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 150000001553 barium compounds Chemical class 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- 239000010433 feldspar Substances 0.000 claims description 6
- 150000002611 lead compounds Chemical class 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000005357 flat glass Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000003756 stirring Methods 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 206010024796 Logorrhoea Diseases 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- -1 solar cell Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B1/00—Preparing the batches
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B13/00—Rolling molten glass, i.e. where the molten glass is shaped by rolling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
Abstract
The invention discloses a solar photovoltaic glass fluoride-free reflecting material and a preparation process thereof, belonging to the field of solar energy, and the solar photovoltaic glass fluoride-free reflecting material comprises the following components: 54-63 parts; nano-scale silica: 18-22 parts; aluminum oxide: 1.2-1.8 parts, a preparation process of the solar photovoltaic glass fluorine-free reflecting material comprises the following steps: the method comprises the following steps: s1, crushing common silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, R2O and ferric oxide, wherein the particle size of the crushed powder is less than 60um, and stirring uniformly. The tempering effect can be further improved, the surface hardness of the glass is higher, a certain content of transparent polyurethane and EVA is added, and the stability is improved.
Description
Technical Field
The invention relates to the field of solar energy, in particular to a fluorine-free reflecting material of solar photovoltaic glass and a preparation process thereof.
Background
The photovoltaic glass, also called "photoelectric glass", a special glass which can press in the solar photovoltaic component, can utilize solar radiation to generate electricity, and has related current leading-out device and cable, is formed from glass, solar cell, film, back glass and special metal conductor, etc. it is a novel high-tech glass product for building, can bear wind pressure and large day and night temp. difference change, and has the advantages of beautiful appearance, light transmission, controllable energy-saving electricity generation, no need of fuel, no waste gas, no waste heat, no waste slag and no noise pollution, etc.
In the prior art, when photovoltaic glass is used, dust is easily accumulated on the surface of the photovoltaic glass, the power generation efficiency is reduced, the photovoltaic glass is arranged outdoors, the strength is increased through toughening treatment, the hardness of the photovoltaic glass is still the bottom of the photovoltaic glass, the photovoltaic glass is influenced by a severe environment, the photovoltaic glass is easy to damage, and the service life of the photovoltaic glass is short.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a fluorine-free reflecting material for solar photovoltaic glass and a preparation process thereof, which can further improve the toughening effect, ensure that the surface hardness of the glass is higher, and increase certain content of transparent polyurethane and EVA to improve the stability.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A fluorine-free reflecting material of solar photovoltaic glass comprises common silicon dioxide: 54-63 parts;
nano-scale silica: 18-22 parts;
aluminum oxide: 1.2-1.8 parts;
calcium oxide: 8-12 parts;
magnesium oxide: 1.1-1.6 parts;
R2O: 12-16 parts;
iron sesquioxide: 0.012-0.02 portion;
transparent polyurethane: 22-38 parts;
EVA: 22-38 parts.
Further, the ratio of the nano-scale silicon dioxide to the common silicon dioxide is 1:3-4, and the total part of the nano-scale silicon dioxide and the common silicon dioxide is not more than 74 parts.
Furthermore, the parts of the transparent polyurethane and the EVA are the same, Na2O or K2O is adopted as R2O, and the VA content in the EVA is 30-32%.
A preparation process of a fluorine-free reflective material of solar photovoltaic glass comprises the following steps: the method comprises the following steps:
s1, crushing common silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, R2O and ferric oxide, wherein the particle size of the crushed powder is less than 60um, and uniformly stirring;
s2, carrying out hot melting on the crushed powder in a first melting furnace until the powder is in a liquid state, and simultaneously adding transparent polyurethane and EVA in a second melting furnace until the powder is in a liquid state;
s3, adding the nano-silicon dioxide into a second melting furnace, and continuing to heat for 10-20 minutes;
s4, pouring the liquid in the second melting furnace into the first melting furnace, adding the modified additive, adjusting the temperature in the first melting furnace to 2200 ℃, and heating for 30-60 minutes to obtain liquid glass;
s5, feeding liquid glass into a forming furnace, and manufacturing solid glass by adopting a delay and compression roller, wherein the temperature of the delay and compression roller is gradually reduced along the traveling route of the glass during forming, and the temperature of the delay and compression roller is set to be 1000-600 ℃;
and S6, cutting and breaking the solid glass to obtain glass meeting the standard and glass not meeting the standard, and then toughening the glass meeting the standard.
Further, in step S3, when the heating is continued, the photovoltaic glass with quality not meeting the standard obtained in step S6 may be added, and the time for continuing the heating is prolonged by 40 to 50 minutes per 100 parts of the photovoltaic glass.
Further, in step S5, the glass pressed by the calendering rolls has a thickness of 2.5 to 3.0mm or 3.4 to 4mm, and the number of calendering rolls is not less than 8, and the temperature difference between adjacent calendering rolls is not higher than 80 ℃.
Further, in step S6, the tempering process includes:
s6.1, preheating, namely taking flat glass, and heating for 2-4min at the temperature of 300-;
s6.2, formally heating, namely gradually raising the heating temperature to 680-720 ℃ within 10min, and heating for 4-7min at the temperature;
s6.3, cooling, and simultaneously blowing air uniformly to two sides of the glass to cool the glass to 280-300 ℃, stopping blowing air, and preserving heat for more than 25min at the temperature;
and S6.3, taking the glass out, placing the glass in a dust-free environment, and naturally cooling the glass to room temperature.
Further, in step S2, a flux is added, the flux is in a fraction of 3-8 parts, and the flux comprises one or more of limestone, feldspar, soda ash, boric acid, lead compound and barium compound.
Further, in step S3, a flux is added, the flux is in a fraction of 3-8 parts, and the flux comprises one or more of limestone, feldspar, soda ash, boric acid, lead compound and barium compound.
Further, before adding the substandard glass, crushing the substandard glass.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the common silicon dioxide and the nanoscale silicon dioxide are arranged, so that the production cost of the photovoltaic glass can be reduced, and the stability of the photovoltaic glass is improved by utilizing the transparent polyurethane and the EVA, so that the photovoltaic glass still can be sufficiently stable even in a severe environment, cannot be easily damaged or broken, is high in safety and long in service life.
(2) The use amount ratio of the nano-scale silicon dioxide to the common silicon dioxide can ensure that the surface of the photovoltaic glass has a good lotus effect, dust is prevented from being attached to the photovoltaic glass, and the production cost is low.
(3) The parts of the transparent polyurethane and the EVA are the same, so that the photovoltaic glass has good hardness and certain elasticity, and has good stability when being influenced by severe environment.
(4) Through ordinary silica, aluminium oxide, calcium oxide, magnesium oxide, R2O, the iron sesquioxide is garrulous then hot melt, and nanometer silica and transparent polyurethane, EVA separately hot melt, heat after mixing, can guarantee that the reaction is enough abundant, and stability is high moreover, and after obtaining liquid glass, divide the region of difference in temperature to carry out the shaping to can obtain more stable photovoltaic glass, the cost also becomes low moreover.
(5) Through repeated processing of the photovoltaic glass which does not reach the standard, the processing quality of the photovoltaic glass is improved, and the processing cost of the photovoltaic glass is further reduced.
(6) The glass is pressed to different thicknesses through the extension pressing roller, so that the photovoltaic glass is suitable for different environments in different regions, such as household or places with mild environment, thinner photovoltaic glass is adopted, and in industrial or severe environment, thicker photovoltaic glass is adopted, the service life is prolonged, and different use conditions are met.
(7) When tempering is handled, adopt gentler temperature variation to reduce the stress that produces because of the difference in temperature change, further reduce the stress variation among the temperature variation process, make among the cooling process, temperature variation is slower, thereby reduces refrigerated speed, the treatment effect of tempering like this is better.
(8) The fluxing agent is adopted, so that the melting point of substances such as silicon dioxide and the like can be reduced, the processing quality is better in the processing process, and the energy consumption is reduced.
(9) The fluxing agent is adopted, so that the melting point of substances such as silicon dioxide and the like can be reduced, the processing quality is better in the processing process, and the energy consumption is reduced.
(10) Glass is crushed, so that the glass melting and processing are more convenient, and the efficiency is higher.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships only for the convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example 1:
a fluorine-free reflecting material of solar photovoltaic glass comprises the following components: 54-63 parts;
nano-scale silica: 18-22 parts;
aluminum oxide: 1.2 to 1.8 portions of
Calcium oxide: 8-12 parts;
magnesium oxide: 1.1-1.6 parts;
R2O: 12-16 parts;
iron sesquioxide: 0.012-0.02 portion;
transparent polyurethane: 22-38 parts;
EVA: 22-38 parts.
Example 2:
a fluorine-free reflecting material of solar photovoltaic glass comprises common silicon dioxide: 54 parts of a binder;
nano-scale silicon dioxide: 18 parts of a mixture;
aluminum oxide: 1.2 parts of
Calcium oxide: 8 parts of a mixture;
magnesium oxide: 1.1 parts;
R2O: 12 parts of (1);
iron sesquioxide: 0.012 part;
transparent polyurethane: 22 parts of (A);
EVA: 22 parts of.
Example 3
A fluorine-free reflecting material of solar photovoltaic glass comprises common silicon dioxide: 54 parts of a binder;
nano-scale silica: 20 parts of (1);
aluminum oxide: 1.5 parts of
Calcium oxide: 10 parts of (A);
magnesium oxide: 1.4 parts;
R2O: 14 parts of (1);
iron sesquioxide: 0.016 part;
transparent polyurethane: 30 parts of (1);
EVA: 30 parts of.
Example 4
A fluorine-free reflecting material of solar photovoltaic glass comprises common silicon dioxide: 52 parts of (1);
nano-scale silica: 22 parts of (A);
aluminum oxide: 1.8 parts of
Calcium oxide: 12 parts of (1);
magnesium oxide: 1.6 parts;
R2O: 16 parts of a mixture;
iron oxide: 0.02 part;
transparent polyurethane: 38 parts of a mixture;
EVA: 38 parts of the raw materials.
Ordinary silica and the setting of nanometer silica can reduce photovoltaic glass's manufacturing cost, and utilize transparent polyurethane and EVA to increase photovoltaic glass's stability, even under adverse circumstances, still can be enough stable like this, can not damage easily, the breakage, and the security is high, long service life.
Further, the ratio of the nano-scale silicon dioxide to the common silicon dioxide is 1:3-4, and the total part of the nano-scale silicon dioxide and the common silicon dioxide is not more than 74 parts.
The use amount ratio of the nano-scale silicon dioxide to the common silicon dioxide can ensure that the surface of the photovoltaic glass has a good lotus effect, dust is prevented from being attached to the photovoltaic glass, and the production cost is low.
Furthermore, the parts of the transparent polyurethane and the EVA are the same, the R2O adopts Na2O or K2O, and the VA content in the EVA is 30-32%.
The parts of the transparent polyurethane and the EVA are the same, so that the photovoltaic glass has good hardness and certain elasticity, and has good stability when being influenced by severe environment.
A preparation process of a fluorine-free reflective material of solar photovoltaic glass comprises the following steps: the method comprises the following steps:
s1, crushing common silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, R2O and ferric oxide, wherein the particle size of the crushed powder is less than 60um, and uniformly stirring;
s2, carrying out hot melting on the crushed powder in a first melting furnace until the powder is in a liquid state, and simultaneously adding transparent polyurethane and EVA in a second melting furnace until the powder is in a liquid state;
s3, adding the nano-silicon dioxide into a second melting furnace, and continuing to heat for 10-20 minutes;
s4, pouring the liquid in the second melting furnace into the first melting furnace, adding the modified additive, adjusting the temperature in the first melting furnace to 2200 ℃, and heating for 30-60 minutes to obtain liquid glass;
s5, feeding liquid glass into a forming furnace, and manufacturing solid glass by adopting a delay and compression roller, wherein the temperature of the delay and compression roller is gradually reduced along the traveling route of the glass during forming, and the temperature of the delay and compression roller is set to be 1000-600 ℃;
and S6, cutting and breaking the solid glass to obtain glass meeting the standard and glass not meeting the standard, and then toughening the glass meeting the standard.
Through ordinary silica, aluminium oxide, calcium oxide, magnesium oxide, R2O, the iron sesquioxide is garrulous then hot melt, and nanometer silica and transparent polyurethane, EVA separately hot melt, heat after mixing, can guarantee that the reaction is enough abundant, and stability is high moreover, and after obtaining liquid glass, divide the region of difference in temperature to carry out the shaping to can obtain more stable photovoltaic glass, the cost also becomes low moreover.
Further, in step S3, when the heating is continued, the photovoltaic glass with quality not meeting the standard obtained in step S6 may be added, and the time for continuing the heating is prolonged by 40 to 50 minutes per 100 parts of the photovoltaic glass.
Through repeated processing of the photovoltaic glass which does not reach the standard, the processing quality of the photovoltaic glass is improved, and the processing cost of the photovoltaic glass is further reduced.
Further, in step S5, the glass pressed by the calendering rolls has a thickness of 2.5 to 3.0mm or 3.4 to 4mm, and the number of calendering rolls is not less than 8, and the temperature difference between adjacent calendering rolls is not higher than 80 ℃.
Further, in step S6, the tempering process includes:
s6.1, preheating, namely taking flat glass, and heating for 2-4min at the temperature of 300-;
s6.2, formally heating, namely gradually raising the heating temperature to 680-720 ℃ within 10min, and heating for 4-7min at the temperature;
s6.3, cooling, and simultaneously blowing air uniformly to two sides of the glass to cool the glass to 280 plus 300 ℃, stopping blowing air, and preserving the heat for more than 25min at the temperature;
and S6.3, taking the glass out, placing the glass in a dust-free environment, and naturally cooling the glass to room temperature.
The glass is pressed to different thicknesses through the extension pressing roller, so that the photovoltaic glass is suitable for different environments in different regions, such as household or places with mild environment, thinner photovoltaic glass is adopted, and in industrial or severe environment, thicker photovoltaic glass is adopted, the service life is prolonged, and different use conditions are met. When tempering is handled, adopt gentler temperature variation to reduce the stress that produces because of the difference in temperature change, further reduce the stress variation among the temperature variation process, make among the cooling process, temperature variation is slower, thereby reduces refrigerated speed, the treatment effect of tempering like this is better.
Further, in step S2, a flux is added, the flux is in a fraction of 3-8 parts, and the flux comprises one or more of limestone, feldspar, soda ash, boric acid, lead compound, and barium compound.
The fluxing agent is adopted, so that the melting point of substances such as silicon dioxide and the like can be reduced, the processing quality is better in the processing process, and the energy consumption is reduced.
Further, in step S3, a flux is added, the flux is in a fraction of 3-8 parts, and the flux comprises one or more of limestone, feldspar, soda ash, boric acid, lead compound, and barium compound.
The fluxing agent is adopted, so that the melting point of substances such as silicon dioxide and the like can be reduced, the processing quality is better in the processing process, and the energy consumption is reduced.
Further, before adding the substandard glass, crushing the substandard glass. Glass is crushed, so that the glass melting and processing are more convenient, and the efficiency is higher.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The solar photovoltaic glass fluorine-free reflecting material is characterized in that: the method comprises the following steps:
ordinary silica: 54-63 parts;
nano-scale silica: 18-22 parts;
aluminum oxide: 1.2 to 1.8 portions of
Calcium oxide: 8-12 parts;
magnesium oxide: 1.1-1.6 parts;
R2o: 12-16 parts;
iron sesquioxide: 0.012-0.02 portion;
transparent polyurethane: 22-38 parts;
EVA: 22-38 parts.
2. The fluorine-free reflective material for solar photovoltaic glass according to claim 1, wherein: the ratio of the nano-scale silicon dioxide to the common silicon dioxide is 1:3-4, and the total part of the nano-scale silicon dioxide and the common silicon dioxide is not more than 74 parts.
3. The fluorine-free reflective material for solar photovoltaic glass according to claim 1, wherein: the parts of the transparent polyurethane and the EVA are the same, and R is2O is Na2O or K2And O, wherein the content of VA in the EVA is 30-32%.
4. A preparation process of a fluorine-free reflective material of solar photovoltaic glass is characterized by comprising the following steps: the method comprises the following steps:
s1, mixing ordinary silicon dioxide, aluminium oxide, calcium oxide, magnesium oxide and R2O and ferric oxide are crushed, the particle size of the crushed powder is less than 60um, and the mixture is stirred uniformly;
s2, carrying out hot melting on the crushed powder in a first melting furnace until the powder is in a liquid state, and simultaneously adding transparent polyurethane and EVA in a second melting furnace until the powder is in a liquid state;
s3, adding the nano-silicon dioxide into a second melting furnace, and continuing to heat for 10-20 minutes;
s4, pouring the liquid in the second melting furnace into the first melting furnace, adding the modified additive, adjusting the temperature in the first melting furnace to 2200 ℃, and heating for 30-60 minutes to obtain liquid glass;
s5, feeding liquid glass into a forming furnace, and manufacturing solid glass by adopting a delay and compression roller, wherein the temperature of the delay and compression roller is gradually reduced along the traveling route of the glass during forming, and the temperature of the delay and compression roller is set to be 1000-600 ℃;
and S6, cutting and breaking the solid glass to obtain glass meeting the standard and glass not meeting the standard, and then toughening the glass meeting the standard.
5. The preparation process of the fluorine-free reflective material for solar photovoltaic glass according to claim 4, wherein the preparation process comprises the following steps: in step S3, when the heating is continued, the photovoltaic glass with quality that does not meet the standard obtained in step S6 may be added, and the time for continuing the heating is prolonged by 40 to 50 minutes per 100 parts of the added photovoltaic glass.
6. The preparation process of the fluorine-free reflective material for solar photovoltaic glass according to claim 4, wherein the preparation process comprises the following steps: in step S5, the glass pressed by the calendering rolls has a thickness of 2.5 to 3.0mm or 3.4 to 4mm, and the number of calendering rolls is not less than 8, and the temperature difference between adjacent calendering rolls is not higher than 80 ℃.
7. The preparation process of the fluorine-free reflective material for solar photovoltaic glass according to claim 4, wherein the preparation process comprises the following steps: in step S6, the tempering process includes:
s6.1, preheating, namely taking flat glass, and heating for 2-4min at the temperature of 300-400 ℃;
s6.2, formally heating, namely gradually raising the heating temperature to 680-720 ℃ within 10min, and heating for 4-7min at the temperature;
s6.3, cooling, and simultaneously blowing air uniformly to two sides of the glass to cool the glass to 280 plus 300 ℃, stopping blowing air, and preserving the heat for more than 25min at the temperature;
and S6.3, taking the glass out, placing the glass in a dust-free environment, and naturally cooling the glass to room temperature.
8. The preparation process of the fluorine-free reflective material for solar photovoltaic glass according to claim 4, wherein the preparation process comprises the following steps: in step S2, a flux is added, the flux is in a fraction of 3-8 parts, and the flux comprises one or more of limestone, feldspar, soda ash, boric acid, lead compounds and barium compounds.
9. The preparation process of the fluorine-free reflective material for solar photovoltaic glass according to claim 4, wherein the preparation process comprises the following steps: in step S3, a flux is added, the flux is in a fraction of 3-8 parts, and the flux comprises one or more of limestone, feldspar, soda ash, boric acid, lead compounds and barium compounds.
10. The preparation process of the fluorine-free reflective material for solar photovoltaic glass according to claim 5, wherein the preparation process comprises the following steps: before adding substandard glass, crushing the substandard glass.
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Application publication date: 20220624 |