CN106010223A - Ceramic coating for solar backboard and preparation method thereof - Google Patents
Ceramic coating for solar backboard and preparation method thereof Download PDFInfo
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- CN106010223A CN106010223A CN201610411487.1A CN201610411487A CN106010223A CN 106010223 A CN106010223 A CN 106010223A CN 201610411487 A CN201610411487 A CN 201610411487A CN 106010223 A CN106010223 A CN 106010223A
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- ceramic coating
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- energy backboard
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses ceramic coating for a solar backboard and a preparation method thereof. The ceramic coating is prepared from, by weight, 35-40% of silane hydrolysate, 55-60% of a titanium dioxide-filler sizing agent and 5-6% of an auxiliary solution. Compared with the prior art, the ceramic coating has the advantages that the base material of the solar backboard is common glass; the ceramic coating will not hurt people or pollute the environment and is novel coating which is environmentally friendly, safe and healthy; the glass solar backboard is prepared through the stepwise process, in the first step, the common glass is made into tempered glass, and in the second step, the surface of the tempered glass is coated with a ceramic coating.
Description
Technical field
The present invention provides a kind of ceramic coating for solar energy backboard and preparation method thereof.
Background technology
Solar energy is a kind of novel green non-polluting energy sources, and inexhaustible.At present, the application of solar energy
Convert solar energy into electrical energy mainly by sun electrification component and be used, solar electrical energy generation assembly mainly by header board,
Encapsulating material, crystal-silicon battery slice, backboard form.Solar energy backboard is positioned at the back side of solar panel, plays cell piece
Protection and the effect supported, it is therefore necessary to there is reliably electric insulating quality, good mechanical property, water vapor rejection performance
And weather resistance.
The most general solar energy backboard typically has three-decker, i.e. TPT structure or TPE structure, outer protective layer
For fluoropolymer layer, having good environment resistant erosiveness, intermediate layer is biaxially oriented laminated polyester film, has good
Good insulating properties and mechanical property, internal layer is fluoropolymer layer or polyethylene and vinyl acetate co-polymer and encapsulation
Material EVA, has good caking property, is all to be formed by solvent-based two-component polyurethane binder bonding between each layer,
The disadvantage of this dry type composite construction is to need in production process to use substantial amounts of organic solvent, these organic solvents or
Many or few all operator and environment can be caused certain pollution, the most this composite construction is during life-time service
Polyurethane glue-line there will be degraded and causes interlaminar separation and come off, and then makes solar module lose protection and gradually report
Useless.
Ceramic coating is the novel aqueous inorganic coating of one of rising in recent years, is formed and be similar to glass and enamel after film forming
Si-O-Si structure, owing to the bond energy of Si-O key is higher, so weatherability is the best, long-term illumination will not occur degraded and
The phenomenon separated with base material or come off, and ceramic coating film forming matter derives from natural stone-powder, uses in production process
The solvent overwhelming majority is deionized water, and operative employee's human and environment is not had any injury and pollution, replaces the existing solar energy back of the body
Plate coating is imperative.
Summary of the invention
For the defect of prior art, it is an object of the invention to provide a kind of ceramic coating for solar energy backboard and system thereof
Preparation Method.Technical scheme is particularly as follows: the base material of (1) present invention is simple glass rather than existing PET
Plastic plate；(2) backboard coating is ceramic coating rather than existing fluorine-containing coat.
First aspect, the present invention provides a kind of ceramic coating for solar energy backboard, including each group of following weight content
Point:
Hydrolyzed silane solution 35-40%,
Titanium dioxide-filler slurry 55-60%,
Compounding agent solution 5-6%.
Preferably, described ceramic coating includes each component of following weight content: hydrolyzed silane solution 37.7%, titanium dioxide-fill out
Slip material 56.6%, compounding agent solution 5.7%.
Wherein, titanium dioxide: in the case of ensureing covering power, consumption is minimum, to reduce coating cost；Filler: prevent from being coated with
Material sedimentation, even if sedimentation also can light mix homogeneously；PH adjusting agent in auxiliary agent: ensure the pH value ring of silane hydrolyzate polymerization
Border, makes silane that hydrolysis and polymerization to occur in the range of 3.8-5.0pH value, the most both can guarantee that response speed, and can guarantee that again
The shelf-life of coating.This is because ceramic coating is very sensitive to pH value, if pH value is less than 3.8, response speed is fast, but
Being to cause the ceramic coating shelf-life the shortest, pH value is higher than 5.0, and response speed is the slowest.Levelling agent in auxiliary agent is with tactile
Become agent: certain levelability should be ensured, ensure again coating procedure does not occur sagging.
Preferably, described hydrolyzed silane solution includes each component of following weight content: silane 19.88%, acid 0.6%, water
19.88%, solvent 59.64%.
Preferably, described silane is MTMS, MTES, tetraethyl orthosilicate, γ-(2,3-
Glycidoxy) mixture of one or more in propyl trimethoxy silicane；Described acid be formic acid, acetic acid, hydrochloric acid,
One or several in citric acid；Described water is deionized water；Described solvent is ethanol, isopropanol, propylene glycol monomethyl ether
In one or more.
Preferably, the preparation of described hydrolyzed silane solution specifically includes: after silane, acid, water mixing, at 25 DEG C, rolling
Dynamic speed is 100-160 rev/min, adds solvent after rolling 12-16 hour, and pH controls at 3.8-5.0.
Preferably, described titanium dioxide-filler slurry includes each component of following weight content: titanium dioxide 60%, filler 5%,
Solvent 34%, dispersant 1%.
Preferably, one or more during described filler is blanc fixe, mica powder, Kaolin；Described solvent is second
One or more in alcohol, isopropanol, propylene glycol monomethyl ether；Described dispersant is the inorganic pigment dispersion for water-based system
Agent, such as: silane alcohol base ammonium salt etc..
Preferably, the preparation of described titanium dioxide-filler slurry specifically includes: by solvent, titanium dioxide, dispersant, filler
Mixing, ball milling, obtain slurry；Wherein, the time of ball milling is 0.5-2 hour, and ball milling uses zirconium pearl, and the particle diameter of zirconium pearl is
1.5-3mm；The equipment of ball milling uses grinder.
Preferably, described compounding agent solution includes each component of following weight content: levelling agent 8.3%, thixotropic agent 50%, pH
Value regulator 41.7%.
Preferably, described levelling agent be polydimethylsiloxane, poly-methyl alkyl siloxane, organic modified polyorganosiloxane
In one or more；Described thixotropic agent is the thixotropic agent for water-based system, such as: aerosil, organic bentonite
Profit soil in one or both；Described pH value regulator is one or several in formic acid, acetic acid, hydrochloric acid, citric acid.
Second aspect, the present invention provides the preparation method of a kind of described ceramic coating, including the silicon by described percentage by weight
The step of alkane hydrolyzed solution, titanium dioxide-filler slurry, compounding agent solution mixing.
What the inventive method was prepared is whiteware coating, and pH controls as 3.8-5.0.
The third aspect, the present invention provides the preparation method of a kind of solar energy backboard based on described ceramic coating, including as follows
Step: the mode coated ceramic coating of employing roller coating, aerial spraying or electrostatic spraying is to safety glass surface, after solidification
Cooling, to obtain final product.
Preferably, preparing of described safety glass is as follows: heated 2-3 minute at 650-750 DEG C by glass, then with cold
Wind cools down rapidly, i.e. makes safety glass.
Preferably, during described coating, the surface temperature of safety glass is 45-60 DEG C；The thickness of described coated ceramic coating
For 8-20 μm, coating layer thickness is low, and covering power is inadequate, affects reflectance, and coating layer thickness is too big, and coating adhesion is bad.
Preferably, the condition of described solidification is: 200-250 DEG C, 15-20 minute；Described cooling includes natural cooling.Low
In 200 DEG C, the adhesive force of coating is bad, higher than 250 DEG C, causes energy waste.
Fourth aspect, the present invention is provided a kind of solar energy backboard, is obtained by above-mentioned preparation method.
Compared with prior art, the device have the advantages that into:
(1) existing solar cell backboard base material is mainly PET, and one side is Organic substance owing to producing the raw material of PET,
Being mainly derived from oil and natural gas, belong to non-renewable resources, recent decades faces exhaustion due to exhaustive exploitation.Another
Aspect needs the time of decades due to the degraded of PET, has become global environmental pollution Organic substance after material scrap.
In order to save the resources such as more oil and natural gas to descendants, the environment that we depend on for existence also for protection, this
The solar energy backboard base material of invention is simple glass.
(2) solar energy backboard coating is mainly fluorine-containing organic polymer, and organic coating discharges substantial amounts of in process of production
VOC, can cause serious injury direct labor and environment.Ceramic coating has takes from natural reduction in naturally
Characteristic, raw material is stone and sand, and the coating ultimately formed is the Si-O-Si structure being similar to glass or enamel,
The solvent major part that ceramic coating uses is deionized water.So whether in production process or discarded after all without to ring
Border pollutes, and is a kind of environmental protection, safe and healthy new coating.
(3) using the technique of substep to prepare glass solar backboard, simple glass is made safety glass by the first step,
Second step is at safety glass surface-coated ceramic coating.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in those skilled in the art
Member is further appreciated by the present invention, but limits the present invention the most in any form.It should be pointed out that, the common skill to this area
For art personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into
Protection scope of the present invention.
It should be noted that embodiment the most all can realize:
(1) in the preparation of hydrolyzed silane solution: described silane be MTMS, MTES,
The mixture of one or more in tetraethyl orthosilicate, γ-(2,3-glycidoxy) propyl trimethoxy silicane；Described
Acid is one or several in formic acid, acetic acid, hydrochloric acid, citric acid；Described water is deionized water；Described solvent is second
One or more in alcohol, isopropanol, propylene glycol monomethyl ether.
(2) in the preparation of titanium dioxide-filler slurry: described filler is in blanc fixe, mica powder, Kaolin
Plant or several；Described solvent is one or more in ethanol, isopropanol, propylene glycol monomethyl ether；Described dispersant is for being used for
The inorganic pigment dispersant of water-based system.
(3) in the configuration of auxiliary agent: described levelling agent is polydimethylsiloxane, poly-methyl alkyl siloxane, You Jigai
One or more in property polysiloxanes；Described thixotropic agent is the thixotropic agent for water-based system, such as: gas phase titanium dioxide
One or both in silicon, organobentonite；Described pH value regulator is in formic acid, acetic acid, hydrochloric acid, citric acid
Plant or several.
Embodiment 1-3
Embodiment 1-3 provides the ceramic coating for solar energy backboard, including component and corresponding content such as table 1 below institute
Show:
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Hydrolyzed silane solution | 35% | 40% | 37.7% |
| Titanium dioxide-filler slurry | 60% | 55% | 56.6% |
| Compounding agent solution | 5% | 5% | 5.7% |
The solution of silane of described percentage by weight, titanium dioxide-filler slurry, compounding agent solution are mixed；
(1) preparation of described hydrolyzed silane solution specifically includes: by 19.88% silane (MTMS), 0.6%
After acid (formic acid), water (deionized water) mixing, at 25 DEG C, after rolling 12-16 hour, add solvent (ethanol),
Control ph is 3.8-5.0；
(2) preparation of described titanium dioxide-filler slurry specifically includes: by 34% solvent (ethanol), 60% titanium dioxide, 1%
Dispersant (silane alcohol base ammonium salt), 5% filler (mica powder) mix, and ball milling obtains slurry；Wherein, the time of ball milling is
0.5-2 hour, ball milling used zirconium pearl, and the particle diameter of zirconium pearl is 1.5-3mm；The equipment of ball milling uses grinder.
(3) compounding agent solution: levelling agent (polydimethylsiloxane) 8.3%, thixotropic agent (aerosil) 50%,
PH value regulator (formic acid) 41.7%.
Embodiment 4-5
Coating based on embodiment 1 preparation, embodiment 4-5 each provides the preparation method of a kind of solar energy backboard, including
Following steps: use roller coating, aerial spraying or electrostatic spraying mode coated ceramic coating to safety glass surface, Gu
Cool down after change, to obtain final product；The most involved parameter is specific as follows:
Table 2
| Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| The preparation of safety glass | 650 DEG C, 2-3 minute | 700 DEG C, 2-3 minute | 750 DEG C, 2-3 minute |
| The surface temperature of safety glass | 45℃ | 50℃ | 60℃ |
| Condition of cure | 200 DEG C, 15 minutes | 230 DEG C, 20 minutes | 250 DEG C, 18 minutes |
| Coating thickness | 8μm | 14μm | 20μm |
Comparative example 1-7
Comparative example 1-7 is the comparative example of embodiment 1 respectively, and contrast is pointed out to be only that:
Comparative example 1: hydrolyzed silane solution 30%, titanium dioxide-filler slurry 65%；
Comparative example 2: the component of hydrolyzed silane solution is silane 20%, acid 0.5%, water 20%, balance of solvent.
Comparative example 3: titanium dioxide 55%, filler 10%, solvent 34%, dispersant 1%.
Comparative example 4: in the preparation of described hydrolyzed silane solution, rolling speed is 200 revs/min, and pH controls at 5.0-6.0；
Comparative example 5: in the preparation of titanium dioxide-filler slurry, Ball-milling Time is 2.5 hours, and particle diameter is 1mm；
Comparative example 6: hydrolyzed silane solution 30%, titanium dioxide-filler slurry 65%；In the preparation of titanium dioxide-filler slurry, ball
Time consuming is 2.5 hours, and particle diameter is 1mm；
Comparative example 7: the component of hydrolyzed silane solution is silane 20%, acid 0.5%, water 20%, balance of solvent；Titanium dioxide-
In the preparation of filler slurry, Ball-milling Time is 2.5 hours, and particle diameter is 1mm.
Comparative example 8-10
Comparative example 8-10 is the comparative example of embodiment 4 respectively, and contrast is pointed out to be only that:
Table 3
| Comparative example 8 | Comparative example 9 | Comparative example 10 | |
| The preparation of safety glass | 800 DEG C, 2-3 minute | 700 DEG C, 5 minutes | 700 DEG C, 2-3 minute |
| The surface temperature of safety glass | 40℃ | 65℃ | 65℃ |
| Condition of cure | 300 DEG C, 15 minutes | 100 DEG C, 20 minutes | 500 DEG C, 18 minutes |
| Coating thickness | 30μm | 6μm | 25μm |
Performance test:
Table 4
Table 4
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in
Stating particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims,
This has no effect on the flesh and blood of the present invention.
Claims (10)
1. the ceramic coating for solar energy backboard, it is characterised in that include each component of following weight content:
Hydrolyzed silane solution 35-40%,
Titanium dioxide-filler slurry 55-60%,
Compounding agent solution 5-6%.
Ceramic coating for solar energy backboard the most according to claim 1, it is characterised in that described ceramic coating
Each component including following weight content: hydrolyzed silane solution 37.7%, titanium dioxide-filler slurry 56.6%, compounding agent solution
5.7%.
Ceramic coating for solar energy backboard the most according to claim 1 and 2, it is characterised in that described silane
Hydrolyzed solution includes each component of following weight content: silane 19.88%, acid 0.6%, water 19.88%, solvent 59.64%.
Ceramic coating for solar energy backboard the most according to claim 1 and 2, it is characterised in that described titanium white
Powder-filler slurry includes each component of following weight content: titanium dioxide 60%, filler 5%, solvent 34%, dispersant 1%.
Ceramic coating for solar energy backboard the most according to claim 1 and 2, it is characterised in that described auxiliary agent
Solution includes each component of following weight content: levelling agent 8.3%, thixotropic agent 50%, pH value regulator 41.7%.
6. the preparation method according to the ceramic coating described in any one of claim 1 to 5, it is characterised in that include
By the hydrolyzed silane solution of described percentage by weight, titanium dioxide-filler slurry, the step of compounding agent solution mixing.
7. a preparation method for solar energy backboard based on ceramic coating described in any one of claim 1 to 5, its feature
It is, comprises the steps: that the mode coated ceramic coating using roller coating, aerial spraying or electrostatic spraying is to tempering glass
Glass surface, cools down after solidification, to obtain final product.
The preparation method of solar energy backboard the most according to claim 7, it is characterised in that during described coating, tempering
The surface temperature of glass is 45-60 DEG C；The thickness of described coated ceramic coating is 8-20 μm.
The preparation method of solar energy backboard the most according to claim 7, it is characterised in that the condition of described solidification is:
200 DEG C, 15-20 minute；Described cooling includes natural cooling.
10. a solar energy backboard, it is characterised in that be to be obtained by the preparation method described in any one of claim 7 to 9
?.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113201270A (en) * | 2021-04-13 | 2021-08-03 | 信义光伏产业(安徽)控股有限公司 | High-reflection glaze, high-reflection back plate glass, and preparation methods and applications thereof |
| CN114231061A (en) * | 2021-12-29 | 2022-03-25 | 辽宁省轻工科学研究院有限公司 | Modified silica sol inorganic coating, preparation method and use method thereof |
| CN114605071A (en) * | 2021-04-14 | 2022-06-10 | 焕澄(上海)新材料科技发展有限公司 | High-diffuse-reflection glass glaze capable of preventing dual-glass-component back plate from being blackened by PID and process |
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|---|---|---|---|---|
| CN113201270A (en) * | 2021-04-13 | 2021-08-03 | 信义光伏产业(安徽)控股有限公司 | High-reflection glaze, high-reflection back plate glass, and preparation methods and applications thereof |
| CN114605071A (en) * | 2021-04-14 | 2022-06-10 | 焕澄(上海)新材料科技发展有限公司 | High-diffuse-reflection glass glaze capable of preventing dual-glass-component back plate from being blackened by PID and process |
| CN114605071B (en) * | 2021-04-14 | 2024-01-26 | 焕澄(上海)新材料科技发展有限公司 | High diffuse reflection glass glaze for preventing PID blackening of back plate of double-glass assembly and process |
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Application publication date: 20161012 |