CN104505411A - Coated type solar battery backboard - Google Patents
Coated type solar battery backboard Download PDFInfo
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- CN104505411A CN104505411A CN201410767869.9A CN201410767869A CN104505411A CN 104505411 A CN104505411 A CN 104505411A CN 201410767869 A CN201410767869 A CN 201410767869A CN 104505411 A CN104505411 A CN 104505411A
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- weathering layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a coated type solar battery backboard. At least one surface of a base material is coated with a first weather resisting layer, and the first weather resisting layer is coated with a second weather resisting layer. A coated type backboard produced according to the invention is excellent in performance and excellent in weather resistance; the coatings are uniform in appearance after double 85% damp-heat aging, free of pulverization and high in adhesive force.
Description
Technical field
Patent of the present invention relates to technical field of solar batteries, particularly a kind of application type solar cell backboard.
Background technology
As the green replacement scheme of traditional production method of electric energy, photovoltaic cell component is used to utilize solar energy to produce electric energy.Photovoltaic cell component is formed by various semiconductor element system assembles, thus must be protected to reduce environmental activity as moisture, oxygen and ultraviolet impact and destruction.Photovoltaic cell component generally adopts glass, cell silicon chip, EVA, back veneer material hot pressing forms; therefore, the backboard with excellent electric insulating quality, bond strength between layers, weather resisteant, ultraviolet-resistent property and moisture barrier property plays important protective effect in photovoltaic cell component.
Traditional backboard mode of production attaches fluoropolymer film in PET both sides and formed, and this mode of production significantly improves the useful life of assembly.But tight adhesion between fluoropolymer film and polymeric base material, also can not throw off after being exposed to the outdoor several years is be difficult to realize.Prior art also can adopt cladding process to produce backboard, but the hidden danger that after coated designs general at present exists hydrothermal aging, coating comes off from PET upper part, affects the useful life of solar cell backboard.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of application type solar cell backboard, and described backboard, by the two-layer fluorine-containing coat of coating, has possessed excellent weather resistance.Simultaneously by coated designs, ensure that coating appearance evenly, without powder phenomenon-tion, adhesive force is high after two 85% hydrothermal aging.
The technical scheme that patent of the present invention is taked is:
A kind of application type solar cell backboard, the first weathering layer is scribbled at least one side of base material, the second weathering layer is scribbled on the first weathering layer, fluorocarbon resin 25 ~ 40 weight portion mainly consisted of containing cross-linkable solidifying functional group of described first weathering layer and the second weathering layer, inorganic filler 20 ~ 35 weight portion, crosslinking agent 4 ~ 8 weight portion, solvent 35 ~ 55 weight portion, described first weathering layer also comprises mylar 1 ~ 5 weight portion.
Above-mentioned application type solar cell backboard, described first weathering layer, the second weathering layer inorganic filler average grain diameter are 0.1 μm ~ 3.0 μm.
Above-mentioned application type solar cell backboard, described first weathering layer thickness is 10 μm ~ 20 μm, and the thickness of the second weathering layer is 3 μm ~ 10 μm.
Above-mentioned application type solar cell backboard, the described fluorocarbon resin containing cross-linkable solidifying functional group is the perfluoroolefine base polymer containing cross-linkable solidifying functional group, containing cross-linkable solidifying functional group based on the CTFE based polymer of chlorotrifluoroethylene (CTFE) unit, containing cross-linkable solidifying functional group based on (VdF) based polymer of vinylidene fluoride (VdF) unit, containing cross-linkable solidifying functional group based on fluoro-alkyl unit containing the polymer of fluoro-alkyl.
Above-mentioned application type solar cell backboard, the monomer containing crosslinkable functionality is incorporated in fluoropolymer by copolymerization by described cross-linkable solidifying functional group.Described cross-linkable solidifying functional group is hydroxyl, carboxyl, amino.
Above-mentioned application type solar cell backboard, described crosslinking agent is one or more in isocyanate-based curing agent, melmac, ammonia system curing agent, epoxy curing agent.Preferred following crosslinking agent: one or more mixtures of melmac, hexamethylene diisocyanate condensate, hexamethylene diisocyanate trimer, IPDI condensate, hexamethylene diisocyanate biruet.
Above-mentioned application type solar cell backboard, described solvent is one or more in toluene, butanone, ethyl acetate, butyl acetate, 1-Methoxy-2-propyl acetate.
The invention has the beneficial effects as follows:
Utilize the present invention to obtain application type solar cell backboard, described backboard, by the two-layer fluorine-containing coat of coating, has possessed excellent weather resistance.Simultaneously by coated designs, ensure that coating appearance evenly, without powder phenomenon-tion, adhesive force is high after two 85% hydrothermal aging.
Accompanying drawing explanation
Fig. 1 is the structural representation of application type solar cell backboard of the present invention;
Fig. 2 is the another kind of structural representation of the present invention.
In figure, each label is expressed as: 1. base material; 2. the first weathering layer; 3. the second weathering layer.
Embodiment
Application type solar cell backboard of the present invention is coated with the first weathering layer 2 in base material one side, the first weathering layer is coated with the second weathering layer 3, film-forming; Upset, be again coated with the first weathering layer 2 and the second weathering layer 3 at the another side of base material by same step, film-forming, obtains application type solar cell backboard.
The base material being generally used for application type solar cell backboard is polyester, and such as, it can be the product of polyethylene terephthalate (PET), Polyethylene Naphthalate (PEN) or their double-layer coextrusion.Different according to purposes, base material can be transparent, white or black.
In fluoropolymer layer of the present invention, first prepare the coating fluid of fluoropolymer layer, this coating fluid contains fluorocarbon resin, crosslinking agent, inorganic filler, and viscosity is adjusted to the scope of suitable coating by solvent.
The present invention's mylar used is non-crystalline type polyester, and glass transition temperature is less than 80 DEG C.
Application type solar cell backboard provided by the invention, can be prepared by following method:
Base material is launched, is coated with the coating fluid of fluoropolymer layer on its surface, after coating, obtains solar cell backboard by solidification.
In the present invention, fluoropolymer layer can be coated on base material by methods such as dip coating, air knife coating method, scraper for coating method, gravure coating process, slot coated methods.
Below by specific embodiment, the invention will be further described, but embodiments of the present invention are not limited to this.
Embodiment 1
100 grams of butanone, the ethyl acetate of 175 grams is added in the container that agitating device is housed, start stirring, the hexamethylene diisocyanate trimer containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 100 grams, the mylar of 5 grams and 20 grams of 125 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (a).
100 grams of butanone, the ethyl acetate of 175 grams is added in the container that agitating device is housed, start stirring, the hexamethylene diisocyanate trimer containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 100 grams and 20 grams of 125 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, heated-air drying, obtaining the first weathering layer thickness is 10 μm, is coated on by coating fluid (b) on the first weathering layer, solidification, obtains the application type solar cell backboard that the second weathering layer thickness is 20 μm.
Obtain the application type solar cell backboard of two sided coatings in the another side coating of base material by above step.Survey its performance in table 1.
Embodiment 2
60 grams of butyl acetates, the butanone of 125 grams is added in the container that agitating device is housed, start stirring, by 175 grams containing chlorotrifluoroethylene (CTFE) unit of hydroxyl be the CTFE based polymer of main body, the IPDI condensate of the titanium dioxide powder of 100 grams, the mylar of 5 grams and 40 grams adds in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (a).
60 grams of butyl acetates, the butanone of 125 grams is added in the container that agitating device is housed, start stirring, by 175 grams containing chlorotrifluoroethylene (CTFE) unit of hydroxyl be the CTFE based polymer of main body, the IPDI condensate of the titanium dioxide powder of 100 grams and 40 grams adds in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (b).
Be coated in PET base material by scraper for coating method by coating fluid (a), heated-air drying, obtaining the first weathering layer thickness is 10 μm, is coated on by coating fluid (b) on the first weathering layer, and solidification, obtaining the second weathering layer thickness is 20 μm.
Obtain the application type solar cell backboard of two sided coatings in the another side coating of base material by above step.Survey its performance in table 1.
Embodiment 3
100 grams of butanone, the 1-Methoxy-2-propyl acetate of 75 grams is added in the container that agitating device is housed, start stirring, the hexamethylene diisocyanate trimer containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 175 grams, the mylar of 10 grams and 35 grams of 200 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (a).
100 grams of butanone, the 1-Methoxy-2-propyl acetate of 75 grams is added in the container that agitating device is housed, start stirring, the hexamethylene diisocyanate trimer containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 175 grams and 35 grams of 200 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, heated-air drying, obtaining the first weathering layer thickness is 20 μm, is coated on by coating fluid (b) on the first weathering layer, solidification, obtains the application type solar cell backboard that the second weathering layer thickness is 23 μm.
Obtain the application type solar cell backboard of two sided coatings in the another side coating of base material by above step.Survey its performance in table 1.
Embodiment 4
100 grams of butyl acetates, the butanone of 100 grams is added in the container that agitating device is housed, start stirring, by 150 grams containing chlorotrifluoroethylene (CTFE) unit of hydroxyl be the CTFE based polymer of main body, the IPDI condensate of the titanium dioxide powder of 125 grams, the mylar of 15 grams and 25 grams adds in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (a).
100 grams of butyl acetates, the butanone of 100 grams is added in the container that agitating device is housed, start stirring, by 150 grams containing chlorotrifluoroethylene (CTFE) unit of hydroxyl be the CTFE based polymer of main body, the IPDI condensate of the titanium dioxide powder of 125 grams and 25 grams adds in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, heated-air drying, obtaining the first weathering layer thickness is 20 μm, is coated on by coating fluid (b) on the first weathering layer, solidification, obtains the application type solar cell backboard that the second weathering layer thickness is 23 μm.
Obtain the application type solar cell backboard of two sided coatings in the another side coating of base material by above step.Survey its performance in table 1.
Embodiment 5
150 grams of butanone, the 1-Methoxy-2-propyl acetate of 50 grams is added in the container that agitating device is housed, start stirring, the hexamethylene diisocyanate trimer containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 150 grams, the mylar of 25 grams and 35 grams of 200 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (a).
150 grams of butanone, the 1-Methoxy-2-propyl acetate of 50 grams is added in the container that agitating device is housed, start stirring, the hexamethylene diisocyanate trimer containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 150 grams and 35 grams of 200 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, heated-air drying, obtaining the first weathering layer thickness is 15 μm, is coated on by coating fluid (b) on the first weathering layer, solidification, obtains the application type solar cell backboard that the second weathering layer thickness is 20 μm.
Obtain the application type solar cell backboard of two sided coatings by above step in the another side coating of base material, survey its performance in table 1.
Comparative example
72.5 grams of 1-Methoxy-2-propyl acetates, the butyl acetate of 45 grams is added in the container that agitating device is housed, start stirring, the amino resins containing the perfluoroolefine base polymer of hydroxyl, the titanium dioxide powder of 125 grams and 45 grams of 225 grams is added in solvent successively, grinding stirring 60 minutes, obtained fluoropolymer layer coating fluid, coated on one side, solidification in PET base material, obtain the comparative sample of dry thick 25 μm.
Obtain comparative sample.Survey its performance in table 1.
Table 1: performance test
Performance evaluation mode:
1. coating adhesion test
Test according to GB/T 9286-1998.
2. apparent
Visual examination under available light, as film without growing dim, free of pinholes, without cracking, without bubbling, being " evenly, normally " without efflorescence.
Claims (7)
1. an application type solar cell backboard, the first weathering layer (2) is scribbled at least one side of base material (1), the second weathering layer (3) is scribbled on the first weathering layer (2), it is characterized in that, described first weathering layer (2) and fluorocarbon resin 25 ~ 40 weight portion of the second weathering layer (3) mainly containing cross-linkable solidifying functional group, inorganic filler 20 ~ 35 weight portion, crosslinking agent 4 ~ 8 weight portion, solvent 35 ~ 55 weight portion, described first weathering layer (2) also comprises mylar 1-5 weight portion.
2. application type solar cell backboard according to claim 1, it is characterized in that, described first weathering layer (2), the second weathering layer (3) inorganic filler average grain diameter are 0.1 μm ~ 3.0 μm.
3. application type solar cell backboard according to claim 2, it is characterized in that, described first weathering layer (2) thickness is 10 μm ~ 20 μm, and the thickness of the second weathering layer (3) is 3 μm ~ 10 μm.
4. application type solar cell backboard according to claim 3, it is characterized in that, the described fluorocarbon resin containing cross-linkable solidifying functional group is the perfluoroolefine base polymer containing cross-linkable solidifying functional group, containing cross-linkable solidifying functional group based on the CTFE based polymer of chlorotrifluoroethylene unit, the VdF based polymer based on vinylidene fluoride units containing cross-linkable solidifying functional group, containing cross-linkable solidifying functional group based on fluoro-alkyl unit containing the polymer of fluoro-alkyl.
5. application type solar cell backboard according to claim 4, it is characterized in that, the monomer containing crosslinkable functionality is incorporated in fluoropolymer by copolymerization by described cross-linkable solidifying functional group, and described cross-linkable solidifying functional group is hydroxyl, carboxyl, amino.
6. application type solar cell backboard according to claim 5, is characterized in that, described crosslinking agent is one or more in isocyanate-based curing agent, melmac, ammonia system curing agent, epoxy curing agent.
7. application type solar cell backboard according to claim 6, it is characterized in that, described solvent is one or more in toluene, butanone, ethyl acetate, butyl acetate, 1-Methoxy-2-propyl acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410767869.9A CN104505411B (en) | 2014-12-13 | 2014-12-13 | Coated type solar battery backboard |
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| CN201410767869.9A CN104505411B (en) | 2014-12-13 | 2014-12-13 | Coated type solar battery backboard |
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| CN104505411B CN104505411B (en) | 2017-02-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108022988A (en) * | 2016-10-31 | 2018-05-11 | 上迈（香港）有限公司 | A kind of laminar structure of photovoltaic module and preparation method thereof, photovoltaic module |
| CN110144149A (en) * | 2019-04-28 | 2019-08-20 | 宁波激智科技股份有限公司 | A kind of fluororine-carbon coating coating fluid and the solar energy backboard using the coating |
| CN110172282A (en) * | 2019-04-28 | 2019-08-27 | 宁波江北激智新材料有限公司 | A kind of fluororine-carbon coating coating fluid and the solar energy backboard using the coating |
| CN110323287A (en) * | 2019-05-31 | 2019-10-11 | 宁波激智科技股份有限公司 | A kind of fluorocarbon layer coating fluid that solvent resistant wipes and the solar energy backboard using the coating fluid |
| CN111434734A (en) * | 2019-07-15 | 2020-07-21 | 宁波激智科技股份有限公司 | Fluorocarbon coating liquid, hydrolysis-resistant transparent fluorocarbon coating and solar backboard using coating |
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| CN110172282A (en) * | 2019-04-28 | 2019-08-27 | 宁波江北激智新材料有限公司 | A kind of fluororine-carbon coating coating fluid and the solar energy backboard using the coating |
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| CN111434734A (en) * | 2019-07-15 | 2020-07-21 | 宁波激智科技股份有限公司 | Fluorocarbon coating liquid, hydrolysis-resistant transparent fluorocarbon coating and solar backboard using coating |
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Address after: 072150 No. 6, Jianye Road, Mancheng Economic Development Zone, Mancheng District, Baoding City, Hebei Province Patentee after: LUCKY FILM Co.,Ltd. Address before: 071054, 6 Kennan Avenue, Baoding, Hebei Patentee before: LUCKY FILM Co.,Ltd. |