CN104505411B - Coated type solar battery backboard - Google Patents
Coated type solar battery backboard Download PDFInfo
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- CN104505411B CN104505411B CN201410767869.9A CN201410767869A CN104505411B CN 104505411 B CN104505411 B CN 104505411B CN 201410767869 A CN201410767869 A CN 201410767869A CN 104505411 B CN104505411 B CN 104505411B
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- weathering layer
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- solar cell
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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 is related to technical field of solar batteries, particularly to 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 utilized to solar energy and produces electricity
Energy.Photovoltaic cell component is to be formed by various semiconductor element system assembles, thus must be protected by reduce environmental activity
Impact and destruction as dampness, oxygen and ultraviolet.The commonly used glass of photovoltaic cell component, cell silicon chip, EVA, backboard material
Material hot pressing forms, and therefore, has excellent electric insulating quality, bond strength between layers, weather resisteant, ultraviolet-resistent property and moisture barrier property
Backboard plays important protective effect in photovoltaic cell component.
Traditional backboard mode of production is to be formed in PET both sides attaching fluoropolymer film, and this mode of production is obvious
Improve the service life of assembly.However, tight adhesion between fluoropolymer film and polymeric base material, expose out of doors
Also it is difficult to realize for cannot come off after several years.Prior art can also produce backboard using cladding process, but, general at present
Coating design there is the hidden danger of coating partial exfoliation from PET after hydrothermal aging, affect the use longevity of solar cell backboard
Life.
Content of the invention
The technical problem to be solved is to provide a kind of application type solar cell backboard, and described backboard passes through to apply
Cloth two-layer fluorine-containing coat, possesses excellent weather resistance.Designed it is ensured that applying after double 85% hydrothermal aging by coating simultaneously
Layer is apparent uniformly, no powder phenomenon-tion, and adhesive force is high.
The technical scheme that patent of the present invention is taken is：
A kind of application type solar cell backboard, scribbles the first weathering layer at least one side of base material, in the first weathering layer
Above scribble the second weathering layer, mainly the consisting of containing cross-linkable solidifying sense of described first weathering layer and the second weathering layer
Fluorocarbon resin 25～40 weight portion of group, inorganic filler 20～35 weight portion, cross-linking agent 4～8 weight portion, solvent 35～55 weight
Part, described first weathering layer also comprises polyester resin 1～5 weight portion.
Above-mentioned application type solar cell backboard, described first weathering layer, the second weathering layer inorganic filler mean 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, the second weathering layer
Thickness is 3 μm～10 μm.
Above-mentioned application type solar cell backboard, the described fluorocarbon resin containing cross-linkable solidifying functional group is containing can hand over
Connection curing functional groups perfluoroolefine birds of the same feather flock together compound, containing cross-linkable solidifying functional group with CTFE (CTFE) unit be
The CTFE based polymer of main body, containing cross-linkable solidifying functional group based on (VdF) system of vinylidene fluoride (VdF) unit
Polymer or containing cross-linkable solidifying functional group based on the polymer containing fluoro-alkyl for the fluoro-alkyl unit.
Above-mentioned application type solar cell backboard, described cross-linkable solidifying functional group will be containing cross-linking sense by copolymerization
The monomer of group is incorporated in fluoropolymer.Described cross-linkable solidifying functional group is hydroxyl, carboxyl or amino.
Above-mentioned application type solar cell backboard, described cross-linking agent is isocyanates system firming agent, melmac, ammonia
It is one or more of firming agent, epoxy firming agent.Preferably following cross-linking agent：Melmac, hexa-methylene two are different
Cyanate polymer, hexamethylene diisocyanate trimer, isophorone diisocyanate polymer, hexa-methylene two isocyanide
One or more mixture of acid esters biuret.
Above-mentioned application type solar cell backboard, described solvent is toluene, butanone, ethyl acetate, butyl acetate, propylene glycol
One or more of methyl ether acetate.
The invention has the beneficial effects as follows：
Obtain application type solar cell backboard using the present invention, described backboard passes through to be coated with two-layer fluorine-containing coat, possesses
Excellent weather resistance.Simultaneously by coating design it is ensured that after double 85% hydrothermal aging coating appearance uniformly, no efflorescence existing
As adhesive force is high.
Brief description
Fig. 1 is the structural representation of application type solar cell backboard of the present invention；
Fig. 2 is another kind of structural representation of application type solar cell backboard of the present invention.
The each label of in figure is expressed as：Base material 1；First weathering layer 2；Second weathering layer 3.
Specific embodiment
The application type solar cell backboard of the present invention is to be coated with the first weathering layer 2 in base material one side, weather-proof first
It is coated with the second weathering layer 3, film-forming on layer；Upset, is coated with first in the another side of base material by same step weather-proof again
Layer 2 and the second weathering layer 3, film-forming, obtain application type solar cell backboard.
The base material being generally used for application type solar cell backboard is polyester, and for example, it can be poly terephthalic acid second
The product of diester (PET), PEN (PEN) or their double-layer coextrusion.Different according to purposes, base material can be
Transparent, white or black.
In the fluoropolymer layer of the present invention, first prepare the coating fluid of fluoropolymer layer, this coating fluid contains fluorine carbon
Resin, cross-linking agent, inorganic filler, and by solvent, viscosity is adjusted to the scope being suitably coated with.
Polyester resin used by the present invention is non-crystalline type polyester, and glass transition temperature is less than 80 DEG C.
The application type solar cell backboard that the present invention provides, can be prepared by following methods：
Base material is launched, is coated with the coating fluid of fluoropolymer layer on its surface, is obtained by solidification after coating
Solar cell backboard.
In the present invention, fluoropolymer layer can by dip coating, air knife coating method, scraper for coating method, gravure coating process,
The methods such as slot coated method are coated on base material.
Below by specific embodiment, the invention will be further described, but embodiments of the present invention are not limited to this.
Embodiment 1
Add 100 grams of butanone, 175 grams of ethyl acetates in the container equipped with agitating device, start stirring, by 125 grams
The perfluoroolefine containing hydroxyl birds of the same feather flock together the hexa-methylene of compound, 100 grams of titanium dioxide powder, 5 grams of polyester resin and 20 grams
Diisocyanate trimer sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid (a).
Add 100 grams of butanone, 175 grams of ethyl acetates in the container equipped with agitating device, start stirring, by 125 grams
The perfluoroolefine containing hydroxyl birds of the same feather flock together the hexamethylene diisocyanate trimerization of compound, 100 grams of titanium dioxide powder and 20 grams
Body sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, hot air drying, obtains the first weathering layer thickness
For 10 μm, coating fluid (b) is coated on the first weathering layer, solidification, obtains application type that the second weathering layer thickness is 20 μm too
Sun can battery back-sheet.
It is coated with the application type solar cell backboard obtaining two sided coatings by above step in the another side of base material.Survey its property
1 can be shown in Table.
Embodiment 2
Add 60 grams of butyl acetates, 125 grams of butanone in the container equipped with agitating device, start stirring, by 175 grams
CTFE containing hydroxyl (CTFE) unit is the CTFE based polymer of main body, 100 grams of titanium dioxide powder, 5 grams poly-
The isophorone diisocyanate polymer of ester resin and 40 grams sequentially adds in solvent, grinds stirring 60 minutes, is obtained fluorine-containing
Polymeric layer coating fluid (a).
Add 60 grams of butyl acetates, 125 grams of butanone in the container equipped with agitating device, start stirring, by 175 grams
CTFE containing hydroxyl (CTFE) unit is the CTFE based polymer of main body, 100 grams of titanium dioxide powder and 40 grams
Isophorone diisocyanate polymer sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid
(b).
By scraper for coating method, coating fluid (a) is coated in PET base material, hot air drying, obtains the first weathering layer thickness
For 10 μm, coating fluid (b) is coated on the first weathering layer, solidification, obtains the second weathering layer thickness and be 20 μm.
It is coated with the application type solar cell backboard obtaining two sided coatings by above step in the another side of base material.Survey its property
1 can be shown in Table.
Embodiment 3
Add 100 grams of butanone, 75 grams of propylene glycol methyl ether acetates in the container equipped with agitating device, start stirring,
200 grams of perfluoroolefines containing hydroxyl are birdsed of the same feather flock together compound, 175 grams of titanium dioxide powder, 10 grams of polyester resin and 35 grams
Hexamethylene diisocyanate trimer sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid
(a).
Add 100 grams of butanone, 75 grams of propylene glycol methyl ether acetates in the container equipped with agitating device, start stirring,
200 grams of perfluoroolefines containing hydroxyl are birdsed of the same feather flock together hexa-methylene two Carbimide. of compound, 175 grams of titanium dioxide powder and 35 grams
Ester trimer sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, hot air drying, obtains the first weathering layer thickness
For 20 μm, coating fluid (b) is coated on the first weathering layer, solidification, obtains application type that the second weathering layer thickness is 23 μm too
Sun can battery back-sheet.
It is coated with the application type solar cell backboard obtaining two sided coatings by above step in the another side of base material.Survey its property
1 can be shown in Table.
Embodiment 4
Add 100 grams of butyl acetates, 100 grams of butanone in the container equipped with agitating device, start stirring, by 150 grams
The CTFE containing hydroxyl (CTFE) unit be the CTFE based polymer of main body, 125 grams of titanium dioxide powder, 15 grams
The isophorone diisocyanate polymer of polyester resin and 25 grams sequentially adds in solvent, grinds stirring 60 minutes, is obtained and contains
Fluoroplymer layer coating fluid (a).
Add 100 grams of butyl acetates, 100 grams of butanone in the container equipped with agitating device, start stirring, by 150 grams
The CTFE containing hydroxyl (CTFE) unit be the CTFE based polymer of main body, 125 grams of titanium dioxide powder and 25 grams
Isophorone diisocyanate polymer sequentially add in solvent, grind stirring 60 minutes, the coating of prepared fluoropolymer layer
Liquid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, hot air drying, obtains the first weathering layer thickness
For 20 μm, coating fluid (b) is coated on the first weathering layer, solidification, obtains application type that the second weathering layer thickness is 23 μm too
Sun can battery back-sheet.
It is coated with the application type solar cell backboard obtaining two sided coatings by above step in the another side of base material.Survey its property
1 can be shown in Table.
Embodiment 5
Add 150 grams of butanone, 50 grams of propylene glycol methyl ether acetates in the container equipped with agitating device, start stirring,
200 grams of perfluoroolefines containing hydroxyl are birdsed of the same feather flock together compound, 150 grams of titanium dioxide powder, 25 grams of polyester resin and 35 grams
Hexamethylene diisocyanate trimer sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid
(a).
Add 150 grams of butanone, 50 grams of propylene glycol methyl ether acetates in the container equipped with agitating device, start stirring,
200 grams of perfluoroolefines containing hydroxyl are birdsed of the same feather flock together hexa-methylene two Carbimide. of compound, 150 grams of titanium dioxide powder and 35 grams
Ester trimer sequentially adds in solvent, grinds stirring 60 minutes, prepared fluoropolymer layer coating fluid (b).
By scraper for coating method, coating fluid (a) is coated in PET base material, hot air drying, obtains the first weathering layer thickness
For 15 μm, coating fluid (b) is coated on the first weathering layer, solidification, obtains application type that the second weathering layer thickness is 20 μm too
Sun can battery back-sheet.
It is coated with, in the another side of base material, the application type solar cell backboard obtaining two sided coatings by above step, survey its property
1 can be shown in Table.
Comparative example
Add 72.5 grams of propylene glycol methyl ether acetates, 45 grams of butyl acetates in the container equipped with agitating device, start
Stirring, by 225 grams of perfluoroolefines containing hydroxyl birds of the same feather flock together compound, 125 grams of titanium dioxide powder and 45 grams amino resins according to
In secondary addition solvent, grind and stir 60 minutes, prepared fluoropolymer layer coating fluid, coated on one side, solidification in PET base material,
Obtain dry thick 25 μm of comparative sample.
Obtain comparative sample.Survey its performance and be shown in Table 1.
Table 1：Performance test
Performance evaluation mode：
1. coating adhesion test
Tested according to GB/T 9286-1998.
2. apparent
Visually inspect under available light, such as film no grow dim, pin-free, no cracking, no bubble, no efflorescence is " all
Even, normal ".
Claims (6)
1. a kind of application type solar cell backboard, scribbles the first weathering layer (2) at least one side of base material (1), resistance to first
Wait and scribble the second weathering layer (3) above layer (2) it is characterised in that described first weathering layer (2) is main with the second weathering layer (3)
Will fluorocarbon resin 25～40 weight portion containing cross-linkable solidifying functional group, inorganic filler 20～35 weight portion, cross-linking agent 4～8
Weight portion, solvent 35～55 weight portion, described first weathering layer (2) also comprises polyester resin 1-5 weight portion；
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.
2. according to claim 1 application type solar cell backboard it is characterised in that described first weathering layer (2), second
Weathering layer (3) inorganic filler mean diameter is 0.1 μm～3.0 μm.
3. according to claim 2 application type solar cell backboard it is characterised in that described containing cross-linkable solidifying sense
Group fluorocarbon resin be the perfluoroolefine containing cross-linkable solidifying functional group birds of the same feather flock together compound, containing cross-linkable solidifying functional group with
CTFE unit be main body CTFE based polymer, containing cross-linkable solidifying functional group based on vinylidene fluoride units
The VdF based polymer of body or poly- containing fluoro-alkyl based on fluoro-alkyl unit containing cross-linkable solidifying functional group
Compound.
4. according to claim 3 application type solar cell backboard it is characterised in that described cross-linkable solidifying functional group lead to
Cross copolymerization the monomer containing crosslinkable functionality is incorporated in fluoropolymer, described cross-linkable solidifying functional group be hydroxyl,
Carboxyl or amino.
5. application type solar cell backboard according to claim 4, is characterized in that, described cross-linking agent is solid for isocyanates system
One or more of agent, melmac, ammonia system firming agent, epoxy firming agent.
6. application type solar cell backboard according to claim 5, is characterized in that, described solvent is toluene, butanone, acetic acid
One or more of ethyl ester, butyl acetate, propylene glycol methyl ether acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410767869.9A CN104505411B (en) | 2014-12-13 | 2014-12-13 | Coated type solar battery backboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410767869.9A CN104505411B (en) | 2014-12-13 | 2014-12-13 | Coated type solar battery backboard |
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| Publication Number | Publication Date |
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| CN104505411A CN104505411A (en) | 2015-04-08 |
| CN104505411B true CN104505411B (en) | 2017-02-22 |
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| CN201410767869.9A Active CN104505411B (en) | 2014-12-13 | 2014-12-13 | Coated type solar battery backboard |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022988B (en) * | 2016-10-31 | 2020-06-30 | 上迈(镇江)新能源科技有限公司 | Laminated structure of photovoltaic module, preparation method of laminated structure and photovoltaic module |
| 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 |
| CN110144149B (en) * | 2019-04-28 | 2021-10-26 | 宁波激智科技股份有限公司 | Fluorocarbon coating liquid and solar backboard using same |
| 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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| US8507029B2 (en) * | 2007-02-16 | 2013-08-13 | Madico, Inc. | Backing sheet for photovoltaic modules |
| CN202487617U (en) * | 2012-02-10 | 2012-10-10 | 无锡中洁能源技术有限公司 | Fluorine-containing high-weather-fastness back film of solar cell |
| CN202608172U (en) * | 2012-03-27 | 2012-12-19 | 浙江华正新材料股份有限公司 | Rear panel applied to back-surface field passivation type solar cell |
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|---|---|---|---|---|
| CN101909768A (en) * | 2008-01-30 | 2010-12-08 | 马迪可公司 | Backing sheet for photovoltaic modules |
| CN201812839U (en) * | 2010-10-13 | 2011-04-27 | 嵊州市新化科技有限公司 | Packaging backboard for crystalline silicon solar battery pack |
| CN201812840U (en) * | 2010-10-27 | 2011-04-27 | 嵊州市新化科技有限公司 | Photovoltaic assembly back plate with insulating layer |
| CN102496642A (en) * | 2011-12-22 | 2012-06-13 | 云南云天化股份有限公司 | Back sheet of solar cell and preparation method for back sheet |
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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. |